Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
794e51c0 | 3 | 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 6 | Largely rewritten by Alan Modra. |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
58d180e8 | 37 | #include "dwarf2.h" |
5bd4f169 | 38 | |
805fc799 | 39 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
41 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 57 | static bfd_vma opd_entry_value |
aef36ac1 | 58 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 59 | |
ad8e1ba5 AM |
60 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
61 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
62 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
63 | #define TARGET_BIG_NAME "elf64-powerpc" | |
64 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 65 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
66 | #define ELF_MACHINE_CODE EM_PPC64 |
67 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 68 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
77 | #define elf_backend_can_refcount 1 | |
78 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 79 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 80 | |
e717da7e | 81 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 82 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 83 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
c79d6685 | 84 | #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match |
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 | |
87 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 88 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 89 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
90 | |
91 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
92 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
93 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 94 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
95 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
96 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 97 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 98 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
97fed1c9 | 99 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 100 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 101 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 102 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 103 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
104 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
105 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
106 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
107 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 108 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
109 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
110 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
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 |
e054468f | 119 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
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. */ | |
126 | #define PLT_ENTRY_SIZE 24 | |
127 | ||
128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 129 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
130 | |
131 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
132 | #define TOC_BASE_OFF 0x8000 |
133 | ||
134 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
135 | #define TP_OFFSET 0x7000 | |
136 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 137 | |
ad8e1ba5 AM |
138 | /* .plt call stub instructions. The normal stub is like this, but |
139 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 140 | insert an addi to adjust r12. */ |
ad8e1ba5 | 141 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
142 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
143 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
144 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 145 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 146 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
147 | /* ld %r11,xxx+16@l(%r12) */ |
148 | #define BCTR 0x4e800420 /* bctr */ | |
149 | ||
5d1634d7 | 150 | |
ee4bf8d2 | 151 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 152 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
153 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
154 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
155 | ||
794e51c0 AM |
156 | #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */ |
157 | #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */ | |
158 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
159 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
160 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
161 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
162 | ||
ac2df442 AM |
163 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
164 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
165 | ||
ad8e1ba5 AM |
166 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
167 | ||
ee4bf8d2 | 168 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 169 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
170 | /* 0: */ |
171 | /* .quad plt0-1f */ | |
172 | /* __glink: */ | |
173 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
174 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
175 | /* 1: */ | |
176 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
177 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
178 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
179 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
180 | /* ld %11,0(%12) */ | |
181 | /* ld %2,8(%12) */ | |
182 | /* mtctr %11 */ | |
183 | /* ld %11,16(%12) */ | |
184 | /* bctr */ | |
5d1634d7 AM |
185 | |
186 | /* Pad with this. */ | |
187 | #define NOP 0x60000000 | |
188 | ||
721956f4 AM |
189 | /* Some other nops. */ |
190 | #define CROR_151515 0x4def7b82 | |
191 | #define CROR_313131 0x4ffffb82 | |
192 | ||
cedb70c5 | 193 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
194 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
195 | #define B_DOT 0x48000000 /* b . */ | |
196 | ||
197 | /* After that, we need two instructions to load the index, followed by | |
198 | a branch. */ | |
199 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 200 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 201 | |
deb0e272 AM |
202 | /* Instructions used by the save and restore reg functions. */ |
203 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
204 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
205 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
206 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
207 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
208 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
209 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
210 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
211 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
212 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
213 | #define BLR 0x4e800020 /* blr */ |
214 | ||
41bd81ab AM |
215 | /* Since .opd is an array of descriptors and each entry will end up |
216 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
217 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 218 | relocate .opd without reloc entries. */ |
41bd81ab AM |
219 | #ifndef NO_OPD_RELOCS |
220 | #define NO_OPD_RELOCS 0 | |
221 | #endif | |
5bd4f169 | 222 | \f |
f5e87a1d | 223 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 224 | |
5bd4f169 | 225 | /* Relocation HOWTO's. */ |
04c9666a | 226 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
227 | |
228 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
229 | /* This reloc does nothing. */ | |
230 | HOWTO (R_PPC64_NONE, /* type */ | |
231 | 0, /* rightshift */ | |
411e1bfb AM |
232 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
233 | 32, /* bitsize */ | |
b34976b6 | 234 | FALSE, /* pc_relative */ |
5bd4f169 | 235 | 0, /* bitpos */ |
f5e87a1d | 236 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
237 | bfd_elf_generic_reloc, /* special_function */ |
238 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 239 | FALSE, /* partial_inplace */ |
d006db6c | 240 | 0, /* src_mask */ |
5bd4f169 | 241 | 0, /* dst_mask */ |
b34976b6 | 242 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
243 | |
244 | /* A standard 32 bit relocation. */ | |
245 | HOWTO (R_PPC64_ADDR32, /* type */ | |
246 | 0, /* rightshift */ | |
247 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
248 | 32, /* bitsize */ | |
b34976b6 | 249 | FALSE, /* pc_relative */ |
5bd4f169 AM |
250 | 0, /* bitpos */ |
251 | complain_overflow_bitfield, /* complain_on_overflow */ | |
252 | bfd_elf_generic_reloc, /* special_function */ | |
253 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 254 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
255 | 0, /* src_mask */ |
256 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 257 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
258 | |
259 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
260 | FIXME: we don't check that, we just clear them. */ | |
261 | HOWTO (R_PPC64_ADDR24, /* type */ | |
262 | 0, /* rightshift */ | |
263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
264 | 26, /* bitsize */ | |
b34976b6 | 265 | FALSE, /* pc_relative */ |
5bd4f169 AM |
266 | 0, /* bitpos */ |
267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
268 | bfd_elf_generic_reloc, /* special_function */ | |
269 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 270 | FALSE, /* partial_inplace */ |
d006db6c | 271 | 0, /* src_mask */ |
f5e87a1d | 272 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 273 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
274 | |
275 | /* A standard 16 bit relocation. */ | |
276 | HOWTO (R_PPC64_ADDR16, /* type */ | |
277 | 0, /* rightshift */ | |
278 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
279 | 16, /* bitsize */ | |
b34976b6 | 280 | FALSE, /* pc_relative */ |
5bd4f169 AM |
281 | 0, /* bitpos */ |
282 | complain_overflow_bitfield, /* complain_on_overflow */ | |
283 | bfd_elf_generic_reloc, /* special_function */ | |
284 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 285 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
286 | 0, /* src_mask */ |
287 | 0xffff, /* dst_mask */ | |
b34976b6 | 288 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
289 | |
290 | /* A 16 bit relocation without overflow. */ | |
291 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
292 | 0, /* rightshift */ | |
293 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
294 | 16, /* bitsize */ | |
b34976b6 | 295 | FALSE, /* pc_relative */ |
5bd4f169 AM |
296 | 0, /* bitpos */ |
297 | complain_overflow_dont,/* complain_on_overflow */ | |
298 | bfd_elf_generic_reloc, /* special_function */ | |
299 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 300 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
301 | 0, /* src_mask */ |
302 | 0xffff, /* dst_mask */ | |
b34976b6 | 303 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
304 | |
305 | /* Bits 16-31 of an address. */ | |
306 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
307 | 16, /* rightshift */ | |
308 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
309 | 16, /* bitsize */ | |
b34976b6 | 310 | FALSE, /* pc_relative */ |
5bd4f169 AM |
311 | 0, /* bitpos */ |
312 | complain_overflow_dont, /* complain_on_overflow */ | |
313 | bfd_elf_generic_reloc, /* special_function */ | |
314 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 315 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
316 | 0, /* src_mask */ |
317 | 0xffff, /* dst_mask */ | |
b34976b6 | 318 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
319 | |
320 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
321 | bits, treated as a signed number, is negative. */ | |
322 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
323 | 16, /* rightshift */ | |
324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
b34976b6 | 326 | FALSE, /* pc_relative */ |
5bd4f169 AM |
327 | 0, /* bitpos */ |
328 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 329 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 330 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 331 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
332 | 0, /* src_mask */ |
333 | 0xffff, /* dst_mask */ | |
b34976b6 | 334 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
335 | |
336 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
337 | FIXME: we don't check that, we just clear them. */ | |
338 | HOWTO (R_PPC64_ADDR14, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
b34976b6 | 342 | FALSE, /* pc_relative */ |
5bd4f169 AM |
343 | 0, /* bitpos */ |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 345 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 346 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 347 | FALSE, /* partial_inplace */ |
d006db6c | 348 | 0, /* src_mask */ |
f5e87a1d | 349 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 350 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
351 | |
352 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
353 | indicate that the branch is expected to be taken. The lower two | |
354 | bits must be zero. */ | |
355 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
356 | 0, /* rightshift */ | |
357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 16, /* bitsize */ | |
b34976b6 | 359 | FALSE, /* pc_relative */ |
5bd4f169 AM |
360 | 0, /* bitpos */ |
361 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 362 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 363 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 364 | FALSE, /* partial_inplace */ |
d006db6c | 365 | 0, /* src_mask */ |
f5e87a1d | 366 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 367 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
368 | |
369 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
370 | indicate that the branch is not expected to be taken. The lower | |
371 | two bits must be zero. */ | |
372 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
373 | 0, /* rightshift */ | |
374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
375 | 16, /* bitsize */ | |
b34976b6 | 376 | FALSE, /* pc_relative */ |
5bd4f169 AM |
377 | 0, /* bitpos */ |
378 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 379 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 380 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 381 | FALSE, /* partial_inplace */ |
d006db6c | 382 | 0, /* src_mask */ |
f5e87a1d | 383 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 384 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
385 | |
386 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
387 | HOWTO (R_PPC64_REL24, /* type */ | |
388 | 0, /* rightshift */ | |
389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
390 | 26, /* bitsize */ | |
b34976b6 | 391 | TRUE, /* pc_relative */ |
5bd4f169 AM |
392 | 0, /* bitpos */ |
393 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 394 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 395 | "R_PPC64_REL24", /* name */ |
b34976b6 | 396 | FALSE, /* partial_inplace */ |
d006db6c | 397 | 0, /* src_mask */ |
f5e87a1d | 398 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 399 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
400 | |
401 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
402 | HOWTO (R_PPC64_REL14, /* type */ | |
403 | 0, /* rightshift */ | |
404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
405 | 16, /* bitsize */ | |
b34976b6 | 406 | TRUE, /* pc_relative */ |
5bd4f169 AM |
407 | 0, /* bitpos */ |
408 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 409 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 410 | "R_PPC64_REL14", /* name */ |
b34976b6 | 411 | FALSE, /* partial_inplace */ |
d006db6c | 412 | 0, /* src_mask */ |
f5e87a1d | 413 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 414 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
415 | |
416 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
417 | the branch is expected to be taken. The lower two bits must be | |
418 | zero. */ | |
419 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
420 | 0, /* rightshift */ | |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
b34976b6 | 423 | TRUE, /* pc_relative */ |
5bd4f169 AM |
424 | 0, /* bitpos */ |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 426 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 427 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 428 | FALSE, /* partial_inplace */ |
d006db6c | 429 | 0, /* src_mask */ |
f5e87a1d | 430 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 431 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
432 | |
433 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
434 | the branch is not expected to be taken. The lower two bits must | |
435 | be zero. */ | |
436 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
437 | 0, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
b34976b6 | 440 | TRUE, /* pc_relative */ |
5bd4f169 AM |
441 | 0, /* bitpos */ |
442 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 443 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 444 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 445 | FALSE, /* partial_inplace */ |
d006db6c | 446 | 0, /* src_mask */ |
f5e87a1d | 447 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 448 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
449 | |
450 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
451 | symbol. */ | |
452 | HOWTO (R_PPC64_GOT16, /* type */ | |
453 | 0, /* rightshift */ | |
454 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 16, /* bitsize */ | |
b34976b6 | 456 | FALSE, /* pc_relative */ |
5bd4f169 AM |
457 | 0, /* bitpos */ |
458 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 459 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 460 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 461 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
462 | 0, /* src_mask */ |
463 | 0xffff, /* dst_mask */ | |
b34976b6 | 464 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
465 | |
466 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
467 | the symbol. */ | |
468 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
469 | 0, /* rightshift */ | |
470 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
471 | 16, /* bitsize */ | |
b34976b6 | 472 | FALSE, /* pc_relative */ |
5bd4f169 AM |
473 | 0, /* bitpos */ |
474 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 475 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 476 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 477 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
478 | 0, /* src_mask */ |
479 | 0xffff, /* dst_mask */ | |
b34976b6 | 480 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
481 | |
482 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
483 | the symbol. */ | |
484 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
485 | 16, /* rightshift */ | |
486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
b34976b6 | 488 | FALSE, /* pc_relative */ |
5bd4f169 AM |
489 | 0, /* bitpos */ |
490 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 491 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 492 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
494 | 0, /* src_mask */ |
495 | 0xffff, /* dst_mask */ | |
b34976b6 | 496 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
497 | |
498 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
499 | the symbol. */ | |
500 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
501 | 16, /* rightshift */ | |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 AM |
505 | 0, /* bitpos */ |
506 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 508 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0xffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* This is used only by the dynamic linker. The symbol should exist | |
515 | both in the object being run and in some shared library. The | |
516 | dynamic linker copies the data addressed by the symbol from the | |
517 | shared library into the object, because the object being | |
518 | run has to have the data at some particular address. */ | |
519 | HOWTO (R_PPC64_COPY, /* type */ | |
520 | 0, /* rightshift */ | |
f5e87a1d AM |
521 | 0, /* this one is variable size */ |
522 | 0, /* bitsize */ | |
b34976b6 | 523 | FALSE, /* pc_relative */ |
5bd4f169 | 524 | 0, /* bitpos */ |
f5e87a1d AM |
525 | complain_overflow_dont, /* complain_on_overflow */ |
526 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 527 | "R_PPC64_COPY", /* name */ |
b34976b6 | 528 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
529 | 0, /* src_mask */ |
530 | 0, /* dst_mask */ | |
b34976b6 | 531 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
532 | |
533 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
534 | entries. */ | |
535 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
538 | 64, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
5bd4f169 AM |
540 | 0, /* bitpos */ |
541 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 542 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 543 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
5bd4f169 | 545 | 0, /* src_mask */ |
f5e87a1d | 546 | ONES (64), /* dst_mask */ |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
548 | |
549 | /* Created by the link editor. Marks a procedure linkage table | |
550 | entry for a symbol. */ | |
551 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
552 | 0, /* rightshift */ | |
553 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
554 | 0, /* bitsize */ | |
b34976b6 | 555 | FALSE, /* pc_relative */ |
5bd4f169 AM |
556 | 0, /* bitpos */ |
557 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 558 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 559 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 560 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
561 | 0, /* src_mask */ |
562 | 0, /* dst_mask */ | |
b34976b6 | 563 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
564 | |
565 | /* Used only by the dynamic linker. When the object is run, this | |
566 | doubleword64 is set to the load address of the object, plus the | |
567 | addend. */ | |
568 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
569 | 0, /* rightshift */ | |
570 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
571 | 64, /* bitsize */ | |
b34976b6 | 572 | FALSE, /* pc_relative */ |
5bd4f169 AM |
573 | 0, /* bitpos */ |
574 | complain_overflow_dont, /* complain_on_overflow */ | |
575 | bfd_elf_generic_reloc, /* special_function */ | |
576 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 577 | FALSE, /* partial_inplace */ |
5bd4f169 | 578 | 0, /* src_mask */ |
f5e87a1d | 579 | ONES (64), /* dst_mask */ |
b34976b6 | 580 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
581 | |
582 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
583 | HOWTO (R_PPC64_UADDR32, /* type */ | |
584 | 0, /* rightshift */ | |
585 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
586 | 32, /* bitsize */ | |
b34976b6 | 587 | FALSE, /* pc_relative */ |
5bd4f169 AM |
588 | 0, /* bitpos */ |
589 | complain_overflow_bitfield, /* complain_on_overflow */ | |
590 | bfd_elf_generic_reloc, /* special_function */ | |
591 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 592 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
593 | 0, /* src_mask */ |
594 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 595 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
596 | |
597 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
598 | HOWTO (R_PPC64_UADDR16, /* type */ | |
599 | 0, /* rightshift */ | |
600 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
601 | 16, /* bitsize */ | |
b34976b6 | 602 | FALSE, /* pc_relative */ |
5bd4f169 AM |
603 | 0, /* bitpos */ |
604 | complain_overflow_bitfield, /* complain_on_overflow */ | |
605 | bfd_elf_generic_reloc, /* special_function */ | |
606 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 607 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
608 | 0, /* src_mask */ |
609 | 0xffff, /* dst_mask */ | |
b34976b6 | 610 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
611 | |
612 | /* 32-bit PC relative. */ | |
613 | HOWTO (R_PPC64_REL32, /* type */ | |
614 | 0, /* rightshift */ | |
615 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
616 | 32, /* bitsize */ | |
b34976b6 | 617 | TRUE, /* pc_relative */ |
5bd4f169 | 618 | 0, /* bitpos */ |
cedb70c5 | 619 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
620 | complain_overflow_signed, /* complain_on_overflow */ |
621 | bfd_elf_generic_reloc, /* special_function */ | |
622 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 623 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
624 | 0, /* src_mask */ |
625 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 626 | TRUE), /* pcrel_offset */ |
5bd4f169 | 627 | |
10ed1bba | 628 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
629 | HOWTO (R_PPC64_PLT32, /* type */ |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
b34976b6 | 633 | FALSE, /* pc_relative */ |
5bd4f169 AM |
634 | 0, /* bitpos */ |
635 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 636 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 637 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 638 | FALSE, /* partial_inplace */ |
5bd4f169 | 639 | 0, /* src_mask */ |
f5e87a1d | 640 | 0xffffffff, /* dst_mask */ |
b34976b6 | 641 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
642 | |
643 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
644 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
645 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
646 | 0, /* rightshift */ | |
647 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 32, /* bitsize */ | |
b34976b6 | 649 | TRUE, /* pc_relative */ |
5bd4f169 AM |
650 | 0, /* bitpos */ |
651 | complain_overflow_signed, /* complain_on_overflow */ | |
652 | bfd_elf_generic_reloc, /* special_function */ | |
653 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 654 | FALSE, /* partial_inplace */ |
5bd4f169 | 655 | 0, /* src_mask */ |
f5e87a1d | 656 | 0xffffffff, /* dst_mask */ |
b34976b6 | 657 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
658 | |
659 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
660 | the symbol. */ | |
661 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 16, /* bitsize */ | |
b34976b6 | 665 | FALSE, /* pc_relative */ |
5bd4f169 AM |
666 | 0, /* bitpos */ |
667 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 668 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 669 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
671 | 0, /* src_mask */ |
672 | 0xffff, /* dst_mask */ | |
b34976b6 | 673 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
674 | |
675 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
676 | the symbol. */ | |
677 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
678 | 16, /* rightshift */ | |
679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
680 | 16, /* bitsize */ | |
b34976b6 | 681 | FALSE, /* pc_relative */ |
5bd4f169 AM |
682 | 0, /* bitpos */ |
683 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 684 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 685 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 686 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
687 | 0, /* src_mask */ |
688 | 0xffff, /* dst_mask */ | |
b34976b6 | 689 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
690 | |
691 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
692 | the symbol. */ | |
693 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
694 | 16, /* rightshift */ | |
695 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
b34976b6 | 697 | FALSE, /* pc_relative */ |
5bd4f169 AM |
698 | 0, /* bitpos */ |
699 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 700 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 701 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 702 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
703 | 0, /* src_mask */ |
704 | 0xffff, /* dst_mask */ | |
b34976b6 | 705 | FALSE), /* pcrel_offset */ |
5bd4f169 | 706 | |
c061c2d8 | 707 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
708 | HOWTO (R_PPC64_SECTOFF, /* type */ |
709 | 0, /* rightshift */ | |
c061c2d8 AM |
710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
711 | 16, /* bitsize */ | |
b34976b6 | 712 | FALSE, /* pc_relative */ |
5bd4f169 AM |
713 | 0, /* bitpos */ |
714 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 715 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 716 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 717 | FALSE, /* partial_inplace */ |
5bd4f169 | 718 | 0, /* src_mask */ |
c061c2d8 | 719 | 0xffff, /* dst_mask */ |
b34976b6 | 720 | FALSE), /* pcrel_offset */ |
5bd4f169 | 721 | |
c061c2d8 | 722 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
723 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
724 | 0, /* rightshift */ | |
725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
726 | 16, /* bitsize */ | |
b34976b6 | 727 | FALSE, /* pc_relative */ |
5bd4f169 AM |
728 | 0, /* bitpos */ |
729 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 730 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 731 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 732 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
733 | 0, /* src_mask */ |
734 | 0xffff, /* dst_mask */ | |
b34976b6 | 735 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
736 | |
737 | /* 16-bit upper half section relative relocation. */ | |
738 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
739 | 16, /* rightshift */ | |
740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
741 | 16, /* bitsize */ | |
b34976b6 | 742 | FALSE, /* pc_relative */ |
5bd4f169 AM |
743 | 0, /* bitpos */ |
744 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 745 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 746 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 747 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
748 | 0, /* src_mask */ |
749 | 0xffff, /* dst_mask */ | |
b34976b6 | 750 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
751 | |
752 | /* 16-bit upper half adjusted section relative relocation. */ | |
753 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
754 | 16, /* rightshift */ | |
755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
756 | 16, /* bitsize */ | |
b34976b6 | 757 | FALSE, /* pc_relative */ |
5bd4f169 AM |
758 | 0, /* bitpos */ |
759 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 760 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 761 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 762 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
763 | 0, /* src_mask */ |
764 | 0xffff, /* dst_mask */ | |
b34976b6 | 765 | FALSE), /* pcrel_offset */ |
5bd4f169 | 766 | |
04c9666a AM |
767 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
768 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
769 | 2, /* rightshift */ |
770 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
771 | 30, /* bitsize */ | |
b34976b6 | 772 | TRUE, /* pc_relative */ |
5bd4f169 AM |
773 | 0, /* bitpos */ |
774 | complain_overflow_dont, /* complain_on_overflow */ | |
775 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 776 | "R_PPC64_REL30", /* name */ |
b34976b6 | 777 | FALSE, /* partial_inplace */ |
d006db6c | 778 | 0, /* src_mask */ |
5bd4f169 | 779 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 780 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
781 | |
782 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
783 | ||
784 | /* A standard 64-bit relocation. */ | |
785 | HOWTO (R_PPC64_ADDR64, /* type */ | |
786 | 0, /* rightshift */ | |
787 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
788 | 64, /* bitsize */ | |
b34976b6 | 789 | FALSE, /* pc_relative */ |
5bd4f169 AM |
790 | 0, /* bitpos */ |
791 | complain_overflow_dont, /* complain_on_overflow */ | |
792 | bfd_elf_generic_reloc, /* special_function */ | |
793 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 794 | FALSE, /* partial_inplace */ |
5bd4f169 | 795 | 0, /* src_mask */ |
f5e87a1d | 796 | ONES (64), /* dst_mask */ |
b34976b6 | 797 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
798 | |
799 | /* The bits 32-47 of an address. */ | |
800 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
801 | 32, /* rightshift */ | |
802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 16, /* bitsize */ | |
b34976b6 | 804 | FALSE, /* pc_relative */ |
5bd4f169 AM |
805 | 0, /* bitpos */ |
806 | complain_overflow_dont, /* complain_on_overflow */ | |
807 | bfd_elf_generic_reloc, /* special_function */ | |
808 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 809 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
810 | 0, /* src_mask */ |
811 | 0xffff, /* dst_mask */ | |
b34976b6 | 812 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
813 | |
814 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
815 | 16 bits, treated as a signed number, is negative. */ | |
816 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
817 | 32, /* rightshift */ | |
818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
819 | 16, /* bitsize */ | |
b34976b6 | 820 | FALSE, /* pc_relative */ |
5bd4f169 AM |
821 | 0, /* bitpos */ |
822 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 823 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 824 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 825 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
826 | 0, /* src_mask */ |
827 | 0xffff, /* dst_mask */ | |
b34976b6 | 828 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
829 | |
830 | /* The bits 48-63 of an address. */ | |
831 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
832 | 48, /* rightshift */ | |
833 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
834 | 16, /* bitsize */ | |
b34976b6 | 835 | FALSE, /* pc_relative */ |
5bd4f169 AM |
836 | 0, /* bitpos */ |
837 | complain_overflow_dont, /* complain_on_overflow */ | |
838 | bfd_elf_generic_reloc, /* special_function */ | |
839 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 840 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
841 | 0, /* src_mask */ |
842 | 0xffff, /* dst_mask */ | |
b34976b6 | 843 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
844 | |
845 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
846 | 16 bits, treated as a signed number, is negative. */ | |
847 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
848 | 48, /* rightshift */ | |
849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 16, /* bitsize */ | |
b34976b6 | 851 | FALSE, /* pc_relative */ |
5bd4f169 AM |
852 | 0, /* bitpos */ |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 854 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 855 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 856 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
857 | 0, /* src_mask */ |
858 | 0xffff, /* dst_mask */ | |
b34976b6 | 859 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
860 | |
861 | /* Like ADDR64, but may be unaligned. */ | |
862 | HOWTO (R_PPC64_UADDR64, /* type */ | |
863 | 0, /* rightshift */ | |
864 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
865 | 64, /* bitsize */ | |
b34976b6 | 866 | FALSE, /* pc_relative */ |
5bd4f169 AM |
867 | 0, /* bitpos */ |
868 | complain_overflow_dont, /* complain_on_overflow */ | |
869 | bfd_elf_generic_reloc, /* special_function */ | |
870 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 871 | FALSE, /* partial_inplace */ |
5bd4f169 | 872 | 0, /* src_mask */ |
f5e87a1d | 873 | ONES (64), /* dst_mask */ |
b34976b6 | 874 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
875 | |
876 | /* 64-bit relative relocation. */ | |
877 | HOWTO (R_PPC64_REL64, /* type */ | |
878 | 0, /* rightshift */ | |
879 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
880 | 64, /* bitsize */ | |
b34976b6 | 881 | TRUE, /* pc_relative */ |
5bd4f169 AM |
882 | 0, /* bitpos */ |
883 | complain_overflow_dont, /* complain_on_overflow */ | |
884 | bfd_elf_generic_reloc, /* special_function */ | |
885 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 886 | FALSE, /* partial_inplace */ |
5bd4f169 | 887 | 0, /* src_mask */ |
f5e87a1d | 888 | ONES (64), /* dst_mask */ |
b34976b6 | 889 | TRUE), /* pcrel_offset */ |
5bd4f169 | 890 | |
cedb70c5 | 891 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
892 | HOWTO (R_PPC64_PLT64, /* type */ |
893 | 0, /* rightshift */ | |
894 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
895 | 64, /* bitsize */ | |
b34976b6 | 896 | FALSE, /* pc_relative */ |
5bd4f169 AM |
897 | 0, /* bitpos */ |
898 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 899 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 900 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 901 | FALSE, /* partial_inplace */ |
5bd4f169 | 902 | 0, /* src_mask */ |
f5e87a1d | 903 | ONES (64), /* dst_mask */ |
b34976b6 | 904 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
905 | |
906 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
907 | table. */ | |
908 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
909 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
912 | 64, /* bitsize */ | |
b34976b6 | 913 | TRUE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 916 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 917 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 | 919 | 0, /* src_mask */ |
f5e87a1d | 920 | ONES (64), /* dst_mask */ |
b34976b6 | 921 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 16 bit TOC-relative relocation. */ | |
924 | ||
925 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
926 | HOWTO (R_PPC64_TOC16, /* type */ | |
927 | 0, /* rightshift */ | |
928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
929 | 16, /* bitsize */ | |
b34976b6 | 930 | FALSE, /* pc_relative */ |
5bd4f169 AM |
931 | 0, /* bitpos */ |
932 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 933 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 934 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
936 | 0, /* src_mask */ |
937 | 0xffff, /* dst_mask */ | |
b34976b6 | 938 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
939 | |
940 | /* 16 bit TOC-relative relocation without overflow. */ | |
941 | ||
942 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
943 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
944 | 0, /* rightshift */ | |
945 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
946 | 16, /* bitsize */ | |
b34976b6 | 947 | FALSE, /* pc_relative */ |
5bd4f169 AM |
948 | 0, /* bitpos */ |
949 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 950 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 951 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 952 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
953 | 0, /* src_mask */ |
954 | 0xffff, /* dst_mask */ | |
b34976b6 | 955 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
956 | |
957 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
958 | ||
959 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
960 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
961 | 16, /* rightshift */ | |
962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 16, /* bitsize */ | |
b34976b6 | 964 | FALSE, /* pc_relative */ |
5bd4f169 AM |
965 | 0, /* bitpos */ |
966 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 967 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 968 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 969 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
970 | 0, /* src_mask */ |
971 | 0xffff, /* dst_mask */ | |
b34976b6 | 972 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
973 | |
974 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
975 | contents of the low 16 bits, treated as a signed number, is | |
976 | negative. */ | |
977 | ||
978 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
979 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
980 | 16, /* rightshift */ | |
981 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 16, /* bitsize */ | |
b34976b6 | 983 | FALSE, /* pc_relative */ |
5bd4f169 AM |
984 | 0, /* bitpos */ |
985 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 986 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 987 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 988 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
989 | 0, /* src_mask */ |
990 | 0xffff, /* dst_mask */ | |
b34976b6 | 991 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
992 | |
993 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
994 | ||
995 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
996 | HOWTO (R_PPC64_TOC, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
999 | 64, /* bitsize */ | |
b34976b6 | 1000 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1001 | 0, /* bitpos */ |
1002 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1003 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1004 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1005 | FALSE, /* partial_inplace */ |
5bd4f169 | 1006 | 0, /* src_mask */ |
f5e87a1d | 1007 | ONES (64), /* dst_mask */ |
b34976b6 | 1008 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1009 | |
1010 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1011 | value to relocate may (!) refer to a PLT entry which the link | |
1012 | editor (a) may replace with the symbol value. If the link editor | |
1013 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1014 | entry and store the address to the new PLT entry in the GOT. | |
1015 | This permits lazy resolution of function symbols at run time. | |
1016 | The link editor may also skip all of this and just (c) emit a | |
1017 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1018 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1019 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1020 | 0, /* rightshift */ | |
1021 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1022 | 16, /* bitsize */ | |
b34976b6 | 1023 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1024 | 0, /* bitpos */ |
1025 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1026 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1027 | "R_PPC64_PLTGOT16", /* name */ |
1028 | FALSE, /* partial_inplace */ | |
1029 | 0, /* src_mask */ | |
1030 | 0xffff, /* dst_mask */ | |
1031 | FALSE), /* pcrel_offset */ | |
1032 | ||
1033 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1034 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1035 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1036 | 0, /* rightshift */ | |
1037 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1038 | 16, /* bitsize */ | |
1039 | FALSE, /* pc_relative */ | |
1040 | 0, /* bitpos */ | |
1041 | complain_overflow_dont, /* complain_on_overflow */ | |
1042 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1043 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1044 | FALSE, /* partial_inplace */ | |
1045 | 0, /* src_mask */ | |
1046 | 0xffff, /* dst_mask */ | |
1047 | FALSE), /* pcrel_offset */ | |
1048 | ||
1049 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1050 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1051 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1052 | 16, /* rightshift */ | |
1053 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1054 | 16, /* bitsize */ | |
1055 | FALSE, /* pc_relative */ | |
1056 | 0, /* bitpos */ | |
1057 | complain_overflow_dont, /* complain_on_overflow */ | |
1058 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1059 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1060 | FALSE, /* partial_inplace */ | |
1061 | 0, /* src_mask */ | |
1062 | 0xffff, /* dst_mask */ | |
1063 | FALSE), /* pcrel_offset */ | |
1064 | ||
1065 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1066 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1067 | is negative. */ | |
1068 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1069 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1070 | 16, /* rightshift */ | |
1071 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1072 | 16, /* bitsize */ | |
1073 | FALSE, /* pc_relative */ | |
1074 | 0, /* bitpos */ | |
1075 | complain_overflow_dont,/* complain_on_overflow */ | |
1076 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1077 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1078 | FALSE, /* partial_inplace */ | |
1079 | 0, /* src_mask */ | |
1080 | 0xffff, /* dst_mask */ | |
1081 | FALSE), /* pcrel_offset */ | |
1082 | ||
1083 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1084 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1085 | 0, /* rightshift */ | |
1086 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1087 | 16, /* bitsize */ | |
1088 | FALSE, /* pc_relative */ | |
1089 | 0, /* bitpos */ | |
1090 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1091 | bfd_elf_generic_reloc, /* special_function */ | |
1092 | "R_PPC64_ADDR16_DS", /* name */ | |
1093 | FALSE, /* partial_inplace */ | |
1094 | 0, /* src_mask */ | |
1095 | 0xfffc, /* dst_mask */ | |
1096 | FALSE), /* pcrel_offset */ | |
1097 | ||
1098 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1099 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1100 | 0, /* rightshift */ | |
1101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1102 | 16, /* bitsize */ | |
1103 | FALSE, /* pc_relative */ | |
1104 | 0, /* bitpos */ | |
1105 | complain_overflow_dont,/* complain_on_overflow */ | |
1106 | bfd_elf_generic_reloc, /* special_function */ | |
1107 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1108 | FALSE, /* partial_inplace */ | |
1109 | 0, /* src_mask */ | |
1110 | 0xfffc, /* dst_mask */ | |
1111 | FALSE), /* pcrel_offset */ | |
1112 | ||
1113 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1114 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1115 | 0, /* rightshift */ | |
1116 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 16, /* bitsize */ | |
1118 | FALSE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_signed, /* complain_on_overflow */ | |
1121 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1122 | "R_PPC64_GOT16_DS", /* name */ | |
1123 | FALSE, /* partial_inplace */ | |
1124 | 0, /* src_mask */ | |
1125 | 0xfffc, /* dst_mask */ | |
1126 | FALSE), /* pcrel_offset */ | |
1127 | ||
1128 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1129 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1130 | 0, /* rightshift */ | |
1131 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1132 | 16, /* bitsize */ | |
1133 | FALSE, /* pc_relative */ | |
1134 | 0, /* bitpos */ | |
1135 | complain_overflow_dont, /* complain_on_overflow */ | |
1136 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1137 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1138 | FALSE, /* partial_inplace */ | |
1139 | 0, /* src_mask */ | |
1140 | 0xfffc, /* dst_mask */ | |
1141 | FALSE), /* pcrel_offset */ | |
1142 | ||
1143 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1144 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1145 | 0, /* rightshift */ | |
1146 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1147 | 16, /* bitsize */ | |
1148 | FALSE, /* pc_relative */ | |
1149 | 0, /* bitpos */ | |
1150 | complain_overflow_dont, /* complain_on_overflow */ | |
1151 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1152 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1153 | FALSE, /* partial_inplace */ | |
1154 | 0, /* src_mask */ | |
1155 | 0xfffc, /* dst_mask */ | |
1156 | FALSE), /* pcrel_offset */ | |
1157 | ||
1158 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1159 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1160 | 0, /* rightshift */ | |
1161 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1162 | 16, /* bitsize */ | |
1163 | FALSE, /* pc_relative */ | |
1164 | 0, /* bitpos */ | |
1165 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1166 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1167 | "R_PPC64_SECTOFF_DS", /* name */ | |
1168 | FALSE, /* partial_inplace */ | |
1169 | 0, /* src_mask */ | |
1170 | 0xfffc, /* dst_mask */ | |
1171 | FALSE), /* pcrel_offset */ | |
1172 | ||
1173 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1174 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1175 | 0, /* rightshift */ | |
1176 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1177 | 16, /* bitsize */ | |
1178 | FALSE, /* pc_relative */ | |
1179 | 0, /* bitpos */ | |
1180 | complain_overflow_dont, /* complain_on_overflow */ | |
1181 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1182 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1183 | FALSE, /* partial_inplace */ | |
1184 | 0, /* src_mask */ | |
1185 | 0xfffc, /* dst_mask */ | |
1186 | FALSE), /* pcrel_offset */ | |
1187 | ||
1188 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1189 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1190 | 0, /* rightshift */ | |
1191 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1192 | 16, /* bitsize */ | |
1193 | FALSE, /* pc_relative */ | |
1194 | 0, /* bitpos */ | |
1195 | complain_overflow_signed, /* complain_on_overflow */ | |
1196 | ppc64_elf_toc_reloc, /* special_function */ | |
1197 | "R_PPC64_TOC16_DS", /* name */ | |
1198 | FALSE, /* partial_inplace */ | |
1199 | 0, /* src_mask */ | |
1200 | 0xfffc, /* dst_mask */ | |
1201 | FALSE), /* pcrel_offset */ | |
1202 | ||
1203 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1204 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1205 | 0, /* rightshift */ | |
1206 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1207 | 16, /* bitsize */ | |
1208 | FALSE, /* pc_relative */ | |
1209 | 0, /* bitpos */ | |
1210 | complain_overflow_dont, /* complain_on_overflow */ | |
1211 | ppc64_elf_toc_reloc, /* special_function */ | |
1212 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1213 | FALSE, /* partial_inplace */ | |
1214 | 0, /* src_mask */ | |
1215 | 0xfffc, /* dst_mask */ | |
1216 | FALSE), /* pcrel_offset */ | |
1217 | ||
1218 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1219 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1220 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1221 | 0, /* rightshift */ |
1222 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1223 | 16, /* bitsize */ | |
1224 | FALSE, /* pc_relative */ | |
1225 | 0, /* bitpos */ | |
1226 | complain_overflow_signed, /* complain_on_overflow */ | |
1227 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1228 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1229 | FALSE, /* partial_inplace */ | |
1230 | 0, /* src_mask */ | |
1231 | 0xfffc, /* dst_mask */ | |
1232 | FALSE), /* pcrel_offset */ | |
1233 | ||
1234 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1235 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1236 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1237 | 0, /* rightshift */ | |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_dont, /* complain_on_overflow */ | |
1243 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1244 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xfffc, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
727fc41e | 1250 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1251 | HOWTO (R_PPC64_TLS, |
1252 | 0, /* rightshift */ | |
1253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 32, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | bfd_elf_generic_reloc, /* special_function */ | |
1259 | "R_PPC64_TLS", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | 0, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
727fc41e AM |
1265 | HOWTO (R_PPC64_TLSGD, |
1266 | 0, /* rightshift */ | |
1267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1268 | 32, /* bitsize */ | |
1269 | FALSE, /* pc_relative */ | |
1270 | 0, /* bitpos */ | |
1271 | complain_overflow_dont, /* complain_on_overflow */ | |
1272 | bfd_elf_generic_reloc, /* special_function */ | |
1273 | "R_PPC64_TLSGD", /* name */ | |
1274 | FALSE, /* partial_inplace */ | |
1275 | 0, /* src_mask */ | |
1276 | 0, /* dst_mask */ | |
1277 | FALSE), /* pcrel_offset */ | |
1278 | ||
1279 | HOWTO (R_PPC64_TLSLD, | |
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_TLSLD", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
3b421ab3 AM |
1293 | HOWTO (R_PPC64_TOCSAVE, |
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_TOCSAVE", /* name */ | |
1302 | FALSE, /* partial_inplace */ | |
1303 | 0, /* src_mask */ | |
1304 | 0, /* dst_mask */ | |
1305 | FALSE), /* pcrel_offset */ | |
1306 | ||
411e1bfb AM |
1307 | /* Computes the load module index of the load module that contains the |
1308 | definition of its TLS sym. */ | |
1309 | HOWTO (R_PPC64_DTPMOD64, | |
1310 | 0, /* rightshift */ | |
1311 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 64, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_dont, /* complain_on_overflow */ | |
1316 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1317 | "R_PPC64_DTPMOD64", /* name */ | |
1318 | FALSE, /* partial_inplace */ | |
1319 | 0, /* src_mask */ | |
1320 | ONES (64), /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
1323 | /* Computes a dtv-relative displacement, the difference between the value | |
1324 | of sym+add and the base address of the thread-local storage block that | |
1325 | contains the definition of sym, minus 0x8000. */ | |
1326 | HOWTO (R_PPC64_DTPREL64, | |
1327 | 0, /* rightshift */ | |
1328 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 64, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1334 | "R_PPC64_DTPREL64", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | ONES (64), /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | /* A 16 bit dtprel reloc. */ | |
1341 | HOWTO (R_PPC64_DTPREL16, | |
1342 | 0, /* rightshift */ | |
1343 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1344 | 16, /* bitsize */ | |
1345 | FALSE, /* pc_relative */ | |
1346 | 0, /* bitpos */ | |
1347 | complain_overflow_signed, /* complain_on_overflow */ | |
1348 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1349 | "R_PPC64_DTPREL16", /* name */ | |
1350 | FALSE, /* partial_inplace */ | |
1351 | 0, /* src_mask */ | |
1352 | 0xffff, /* dst_mask */ | |
1353 | FALSE), /* pcrel_offset */ | |
1354 | ||
1355 | /* Like DTPREL16, but no overflow. */ | |
1356 | HOWTO (R_PPC64_DTPREL16_LO, | |
1357 | 0, /* rightshift */ | |
1358 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1359 | 16, /* bitsize */ | |
1360 | FALSE, /* pc_relative */ | |
1361 | 0, /* bitpos */ | |
1362 | complain_overflow_dont, /* complain_on_overflow */ | |
1363 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1364 | "R_PPC64_DTPREL16_LO", /* name */ | |
1365 | FALSE, /* partial_inplace */ | |
1366 | 0, /* src_mask */ | |
1367 | 0xffff, /* dst_mask */ | |
1368 | FALSE), /* pcrel_offset */ | |
1369 | ||
1370 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1371 | HOWTO (R_PPC64_DTPREL16_HI, | |
1372 | 16, /* rightshift */ | |
1373 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 16, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1379 | "R_PPC64_DTPREL16_HI", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0xffff, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1386 | HOWTO (R_PPC64_DTPREL16_HA, | |
1387 | 16, /* rightshift */ | |
1388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 16, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_dont, /* complain_on_overflow */ | |
1393 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1394 | "R_PPC64_DTPREL16_HA", /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0, /* src_mask */ | |
1397 | 0xffff, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1401 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1402 | 32, /* rightshift */ | |
1403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 16, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_dont, /* complain_on_overflow */ | |
1408 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1409 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0, /* src_mask */ | |
1412 | 0xffff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
1415 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1416 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1417 | 32, /* rightshift */ | |
1418 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1419 | 16, /* bitsize */ | |
1420 | FALSE, /* pc_relative */ | |
1421 | 0, /* bitpos */ | |
1422 | complain_overflow_dont, /* complain_on_overflow */ | |
1423 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1424 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1425 | FALSE, /* partial_inplace */ | |
1426 | 0, /* src_mask */ | |
1427 | 0xffff, /* dst_mask */ | |
1428 | FALSE), /* pcrel_offset */ | |
1429 | ||
1430 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1431 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1432 | 48, /* rightshift */ | |
1433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1434 | 16, /* bitsize */ | |
1435 | FALSE, /* pc_relative */ | |
1436 | 0, /* bitpos */ | |
1437 | complain_overflow_dont, /* complain_on_overflow */ | |
1438 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1439 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1440 | FALSE, /* partial_inplace */ | |
1441 | 0, /* src_mask */ | |
1442 | 0xffff, /* dst_mask */ | |
1443 | FALSE), /* pcrel_offset */ | |
1444 | ||
1445 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1446 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1447 | 48, /* rightshift */ | |
1448 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1449 | 16, /* bitsize */ | |
1450 | FALSE, /* pc_relative */ | |
1451 | 0, /* bitpos */ | |
1452 | complain_overflow_dont, /* complain_on_overflow */ | |
1453 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1454 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1455 | FALSE, /* partial_inplace */ | |
1456 | 0, /* src_mask */ | |
1457 | 0xffff, /* dst_mask */ | |
1458 | FALSE), /* pcrel_offset */ | |
1459 | ||
1460 | /* Like DTPREL16, but for insns with a DS field. */ | |
1461 | HOWTO (R_PPC64_DTPREL16_DS, | |
1462 | 0, /* rightshift */ | |
1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1464 | 16, /* bitsize */ | |
1465 | FALSE, /* pc_relative */ | |
1466 | 0, /* bitpos */ | |
1467 | complain_overflow_signed, /* complain_on_overflow */ | |
1468 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1469 | "R_PPC64_DTPREL16_DS", /* name */ | |
1470 | FALSE, /* partial_inplace */ | |
1471 | 0, /* src_mask */ | |
1472 | 0xfffc, /* dst_mask */ | |
1473 | FALSE), /* pcrel_offset */ | |
1474 | ||
1475 | /* Like DTPREL16_DS, but no overflow. */ | |
1476 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1477 | 0, /* rightshift */ | |
1478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1479 | 16, /* bitsize */ | |
1480 | FALSE, /* pc_relative */ | |
1481 | 0, /* bitpos */ | |
1482 | complain_overflow_dont, /* complain_on_overflow */ | |
1483 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1484 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1485 | FALSE, /* partial_inplace */ | |
1486 | 0, /* src_mask */ | |
1487 | 0xfffc, /* dst_mask */ | |
1488 | FALSE), /* pcrel_offset */ | |
1489 | ||
1490 | /* Computes a tp-relative displacement, the difference between the value of | |
1491 | sym+add and the value of the thread pointer (r13). */ | |
1492 | HOWTO (R_PPC64_TPREL64, | |
1493 | 0, /* rightshift */ | |
1494 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1495 | 64, /* bitsize */ | |
1496 | FALSE, /* pc_relative */ | |
1497 | 0, /* bitpos */ | |
1498 | complain_overflow_dont, /* complain_on_overflow */ | |
1499 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1500 | "R_PPC64_TPREL64", /* name */ | |
1501 | FALSE, /* partial_inplace */ | |
1502 | 0, /* src_mask */ | |
1503 | ONES (64), /* dst_mask */ | |
1504 | FALSE), /* pcrel_offset */ | |
1505 | ||
1506 | /* A 16 bit tprel reloc. */ | |
1507 | HOWTO (R_PPC64_TPREL16, | |
1508 | 0, /* rightshift */ | |
1509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1510 | 16, /* bitsize */ | |
1511 | FALSE, /* pc_relative */ | |
1512 | 0, /* bitpos */ | |
1513 | complain_overflow_signed, /* complain_on_overflow */ | |
1514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1515 | "R_PPC64_TPREL16", /* name */ | |
1516 | FALSE, /* partial_inplace */ | |
1517 | 0, /* src_mask */ | |
1518 | 0xffff, /* dst_mask */ | |
1519 | FALSE), /* pcrel_offset */ | |
1520 | ||
1521 | /* Like TPREL16, but no overflow. */ | |
1522 | HOWTO (R_PPC64_TPREL16_LO, | |
1523 | 0, /* rightshift */ | |
1524 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1525 | 16, /* bitsize */ | |
1526 | FALSE, /* pc_relative */ | |
1527 | 0, /* bitpos */ | |
1528 | complain_overflow_dont, /* complain_on_overflow */ | |
1529 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1530 | "R_PPC64_TPREL16_LO", /* name */ | |
1531 | FALSE, /* partial_inplace */ | |
1532 | 0, /* src_mask */ | |
1533 | 0xffff, /* dst_mask */ | |
1534 | FALSE), /* pcrel_offset */ | |
1535 | ||
1536 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1537 | HOWTO (R_PPC64_TPREL16_HI, | |
1538 | 16, /* rightshift */ | |
1539 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1540 | 16, /* bitsize */ | |
1541 | FALSE, /* pc_relative */ | |
1542 | 0, /* bitpos */ | |
1543 | complain_overflow_dont, /* complain_on_overflow */ | |
1544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1545 | "R_PPC64_TPREL16_HI", /* name */ | |
1546 | FALSE, /* partial_inplace */ | |
1547 | 0, /* src_mask */ | |
1548 | 0xffff, /* dst_mask */ | |
1549 | FALSE), /* pcrel_offset */ | |
1550 | ||
1551 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1552 | HOWTO (R_PPC64_TPREL16_HA, | |
1553 | 16, /* rightshift */ | |
1554 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 16, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_dont, /* complain_on_overflow */ | |
1559 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1560 | "R_PPC64_TPREL16_HA", /* name */ | |
1561 | FALSE, /* partial_inplace */ | |
1562 | 0, /* src_mask */ | |
1563 | 0xffff, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
1566 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1567 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1568 | 32, /* rightshift */ | |
1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1570 | 16, /* bitsize */ | |
1571 | FALSE, /* pc_relative */ | |
1572 | 0, /* bitpos */ | |
1573 | complain_overflow_dont, /* complain_on_overflow */ | |
1574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1575 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1576 | FALSE, /* partial_inplace */ | |
1577 | 0, /* src_mask */ | |
1578 | 0xffff, /* dst_mask */ | |
1579 | FALSE), /* pcrel_offset */ | |
1580 | ||
1581 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1582 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1583 | 32, /* rightshift */ | |
1584 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1585 | 16, /* bitsize */ | |
1586 | FALSE, /* pc_relative */ | |
1587 | 0, /* bitpos */ | |
1588 | complain_overflow_dont, /* complain_on_overflow */ | |
1589 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1590 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1591 | FALSE, /* partial_inplace */ | |
1592 | 0, /* src_mask */ | |
1593 | 0xffff, /* dst_mask */ | |
1594 | FALSE), /* pcrel_offset */ | |
1595 | ||
1596 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1597 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1598 | 48, /* rightshift */ | |
1599 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1600 | 16, /* bitsize */ | |
1601 | FALSE, /* pc_relative */ | |
1602 | 0, /* bitpos */ | |
1603 | complain_overflow_dont, /* complain_on_overflow */ | |
1604 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1605 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1606 | FALSE, /* partial_inplace */ | |
1607 | 0, /* src_mask */ | |
1608 | 0xffff, /* dst_mask */ | |
1609 | FALSE), /* pcrel_offset */ | |
1610 | ||
1611 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1612 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1613 | 48, /* rightshift */ | |
1614 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1615 | 16, /* bitsize */ | |
1616 | FALSE, /* pc_relative */ | |
1617 | 0, /* bitpos */ | |
1618 | complain_overflow_dont, /* complain_on_overflow */ | |
1619 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1620 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1621 | FALSE, /* partial_inplace */ | |
1622 | 0, /* src_mask */ | |
1623 | 0xffff, /* dst_mask */ | |
1624 | FALSE), /* pcrel_offset */ | |
1625 | ||
1626 | /* Like TPREL16, but for insns with a DS field. */ | |
1627 | HOWTO (R_PPC64_TPREL16_DS, | |
1628 | 0, /* rightshift */ | |
1629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1630 | 16, /* bitsize */ | |
1631 | FALSE, /* pc_relative */ | |
1632 | 0, /* bitpos */ | |
1633 | complain_overflow_signed, /* complain_on_overflow */ | |
1634 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1635 | "R_PPC64_TPREL16_DS", /* name */ | |
1636 | FALSE, /* partial_inplace */ | |
1637 | 0, /* src_mask */ | |
1638 | 0xfffc, /* dst_mask */ | |
1639 | FALSE), /* pcrel_offset */ | |
1640 | ||
1641 | /* Like TPREL16_DS, but no overflow. */ | |
1642 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1643 | 0, /* rightshift */ | |
1644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1645 | 16, /* bitsize */ | |
1646 | FALSE, /* pc_relative */ | |
1647 | 0, /* bitpos */ | |
1648 | complain_overflow_dont, /* complain_on_overflow */ | |
1649 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1650 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1651 | FALSE, /* partial_inplace */ | |
1652 | 0, /* src_mask */ | |
1653 | 0xfffc, /* dst_mask */ | |
1654 | FALSE), /* pcrel_offset */ | |
1655 | ||
1656 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1657 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1658 | to the first entry relative to the TOC base (r2). */ | |
1659 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1660 | 0, /* rightshift */ | |
1661 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1662 | 16, /* bitsize */ | |
1663 | FALSE, /* pc_relative */ | |
1664 | 0, /* bitpos */ | |
1665 | complain_overflow_signed, /* complain_on_overflow */ | |
1666 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1667 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1668 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1669 | 0, /* src_mask */ |
1670 | 0xffff, /* dst_mask */ | |
b34976b6 | 1671 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1672 | |
411e1bfb AM |
1673 | /* Like GOT_TLSGD16, but no overflow. */ |
1674 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1675 | 0, /* rightshift */ |
1676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1677 | 16, /* bitsize */ | |
b34976b6 | 1678 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1679 | 0, /* bitpos */ |
1680 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1681 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1682 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1683 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1684 | 0, /* src_mask */ |
1685 | 0xffff, /* dst_mask */ | |
b34976b6 | 1686 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1687 | |
411e1bfb AM |
1688 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1689 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1690 | 16, /* rightshift */ |
1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1692 | 16, /* bitsize */ | |
b34976b6 | 1693 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1694 | 0, /* bitpos */ |
1695 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1696 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1697 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1698 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1699 | 0, /* src_mask */ |
1700 | 0xffff, /* dst_mask */ | |
b34976b6 | 1701 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1702 | |
411e1bfb AM |
1703 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1704 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1705 | 16, /* rightshift */ |
1706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1707 | 16, /* bitsize */ | |
b34976b6 | 1708 | FALSE, /* pc_relative */ |
5bd4f169 | 1709 | 0, /* bitpos */ |
411e1bfb | 1710 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1711 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1712 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1713 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1714 | 0, /* src_mask */ |
1715 | 0xffff, /* dst_mask */ | |
b34976b6 | 1716 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1717 | |
411e1bfb AM |
1718 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1719 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1720 | first entry relative to the TOC base (r2). */ | |
1721 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1722 | 0, /* rightshift */ |
1723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1724 | 16, /* bitsize */ | |
b34976b6 | 1725 | FALSE, /* pc_relative */ |
5bd4f169 | 1726 | 0, /* bitpos */ |
411e1bfb AM |
1727 | complain_overflow_signed, /* complain_on_overflow */ |
1728 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1729 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1730 | FALSE, /* partial_inplace */ |
d006db6c | 1731 | 0, /* src_mask */ |
411e1bfb | 1732 | 0xffff, /* dst_mask */ |
b34976b6 | 1733 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1734 | |
411e1bfb AM |
1735 | /* Like GOT_TLSLD16, but no overflow. */ |
1736 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1737 | 0, /* rightshift */ |
1738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1739 | 16, /* bitsize */ | |
b34976b6 | 1740 | FALSE, /* pc_relative */ |
5bd4f169 | 1741 | 0, /* bitpos */ |
411e1bfb AM |
1742 | complain_overflow_dont, /* complain_on_overflow */ |
1743 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1744 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1745 | FALSE, /* partial_inplace */ |
d006db6c | 1746 | 0, /* src_mask */ |
411e1bfb | 1747 | 0xffff, /* dst_mask */ |
b34976b6 | 1748 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1749 | |
411e1bfb AM |
1750 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1751 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1752 | 16, /* rightshift */ | |
5bd4f169 AM |
1753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1754 | 16, /* bitsize */ | |
b34976b6 | 1755 | FALSE, /* pc_relative */ |
5bd4f169 | 1756 | 0, /* bitpos */ |
411e1bfb | 1757 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1758 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1759 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1760 | FALSE, /* partial_inplace */ |
d006db6c | 1761 | 0, /* src_mask */ |
411e1bfb | 1762 | 0xffff, /* dst_mask */ |
b34976b6 | 1763 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1764 | |
411e1bfb AM |
1765 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1766 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1767 | 16, /* rightshift */ | |
5bd4f169 AM |
1768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1769 | 16, /* bitsize */ | |
b34976b6 | 1770 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1771 | 0, /* bitpos */ |
1772 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1773 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1774 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1775 | FALSE, /* partial_inplace */ |
d006db6c | 1776 | 0, /* src_mask */ |
411e1bfb | 1777 | 0xffff, /* dst_mask */ |
b34976b6 | 1778 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1779 | |
411e1bfb AM |
1780 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1781 | the offset to the entry relative to the TOC base (r2). */ | |
1782 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1783 | 0, /* rightshift */ |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 | 1787 | 0, /* bitpos */ |
411e1bfb | 1788 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1790 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
d006db6c | 1792 | 0, /* src_mask */ |
5bd4f169 | 1793 | 0xfffc, /* dst_mask */ |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1797 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1798 | 0, /* rightshift */ |
c061c2d8 AM |
1799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1800 | 16, /* bitsize */ | |
b34976b6 | 1801 | FALSE, /* pc_relative */ |
5bd4f169 | 1802 | 0, /* bitpos */ |
411e1bfb AM |
1803 | complain_overflow_dont, /* complain_on_overflow */ |
1804 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1805 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1806 | FALSE, /* partial_inplace */ |
d006db6c | 1807 | 0, /* src_mask */ |
c061c2d8 | 1808 | 0xfffc, /* dst_mask */ |
b34976b6 | 1809 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1810 | |
411e1bfb AM |
1811 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1812 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1813 | 16, /* rightshift */ | |
5bd4f169 AM |
1814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1815 | 16, /* bitsize */ | |
b34976b6 | 1816 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1817 | 0, /* bitpos */ |
1818 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1819 | ppc64_elf_unhandled_reloc, /* special_function */ |
1820 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1821 | FALSE, /* partial_inplace */ |
d006db6c | 1822 | 0, /* src_mask */ |
411e1bfb | 1823 | 0xffff, /* dst_mask */ |
b34976b6 | 1824 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1825 | |
411e1bfb AM |
1826 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1827 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1828 | 16, /* rightshift */ | |
1829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1830 | 16, /* bitsize */ | |
1831 | FALSE, /* pc_relative */ | |
1832 | 0, /* bitpos */ | |
1833 | complain_overflow_dont, /* complain_on_overflow */ | |
1834 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1835 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1836 | FALSE, /* partial_inplace */ | |
1837 | 0, /* src_mask */ | |
1838 | 0xffff, /* dst_mask */ | |
1839 | FALSE), /* pcrel_offset */ | |
1840 | ||
1841 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1842 | offset to the entry relative to the TOC base (r2). */ | |
1843 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1844 | 0, /* rightshift */ |
1845 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 16, /* bitsize */ | |
b34976b6 | 1847 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1848 | 0, /* bitpos */ |
1849 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1850 | ppc64_elf_unhandled_reloc, /* special_function */ |
1851 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1852 | FALSE, /* partial_inplace */ |
d006db6c | 1853 | 0, /* src_mask */ |
ad8e1ba5 | 1854 | 0xfffc, /* dst_mask */ |
b34976b6 | 1855 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1856 | |
411e1bfb AM |
1857 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1858 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1859 | 0, /* rightshift */ |
1860 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1861 | 16, /* bitsize */ | |
b34976b6 | 1862 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1863 | 0, /* bitpos */ |
1864 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1865 | ppc64_elf_unhandled_reloc, /* special_function */ |
1866 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1867 | FALSE, /* partial_inplace */ |
d006db6c | 1868 | 0, /* src_mask */ |
ad8e1ba5 | 1869 | 0xfffc, /* dst_mask */ |
b34976b6 | 1870 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1871 | |
411e1bfb AM |
1872 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1873 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1874 | 16, /* rightshift */ | |
5bd4f169 AM |
1875 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1876 | 16, /* bitsize */ | |
b34976b6 | 1877 | FALSE, /* pc_relative */ |
5bd4f169 | 1878 | 0, /* bitpos */ |
411e1bfb | 1879 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1880 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1881 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1882 | FALSE, /* partial_inplace */ |
d006db6c | 1883 | 0, /* src_mask */ |
411e1bfb | 1884 | 0xffff, /* dst_mask */ |
b34976b6 | 1885 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1886 | |
411e1bfb AM |
1887 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1888 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1889 | 16, /* rightshift */ | |
5bd4f169 AM |
1890 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1891 | 16, /* bitsize */ | |
b34976b6 | 1892 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1893 | 0, /* bitpos */ |
1894 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1895 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1896 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1897 | FALSE, /* partial_inplace */ |
d006db6c | 1898 | 0, /* src_mask */ |
411e1bfb | 1899 | 0xffff, /* dst_mask */ |
b34976b6 | 1900 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1901 | |
25f23106 AM |
1902 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1903 | 0, /* rightshift */ | |
1904 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1905 | 0, /* bitsize */ | |
1906 | FALSE, /* pc_relative */ | |
1907 | 0, /* bitpos */ | |
1908 | complain_overflow_dont, /* complain_on_overflow */ | |
1909 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1910 | "R_PPC64_JMP_IREL", /* name */ | |
1911 | FALSE, /* partial_inplace */ | |
1912 | 0, /* src_mask */ | |
1913 | 0, /* dst_mask */ | |
1914 | FALSE), /* pcrel_offset */ | |
1915 | ||
e054468f AM |
1916 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1917 | 0, /* rightshift */ | |
1918 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1919 | 64, /* bitsize */ | |
1920 | FALSE, /* pc_relative */ | |
1921 | 0, /* bitpos */ | |
1922 | complain_overflow_dont, /* complain_on_overflow */ | |
1923 | bfd_elf_generic_reloc, /* special_function */ | |
1924 | "R_PPC64_IRELATIVE", /* name */ | |
1925 | FALSE, /* partial_inplace */ | |
1926 | 0, /* src_mask */ | |
1927 | ONES (64), /* dst_mask */ | |
1928 | FALSE), /* pcrel_offset */ | |
1929 | ||
25f23106 AM |
1930 | /* A 16 bit relative relocation. */ |
1931 | HOWTO (R_PPC64_REL16, /* type */ | |
1932 | 0, /* rightshift */ | |
1933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1934 | 16, /* bitsize */ | |
1935 | TRUE, /* pc_relative */ | |
1936 | 0, /* bitpos */ | |
1937 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1938 | bfd_elf_generic_reloc, /* special_function */ | |
1939 | "R_PPC64_REL16", /* name */ | |
1940 | FALSE, /* partial_inplace */ | |
1941 | 0, /* src_mask */ | |
1942 | 0xffff, /* dst_mask */ | |
1943 | TRUE), /* pcrel_offset */ | |
1944 | ||
1945 | /* A 16 bit relative relocation without overflow. */ | |
1946 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1947 | 0, /* rightshift */ | |
1948 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1949 | 16, /* bitsize */ | |
1950 | TRUE, /* pc_relative */ | |
1951 | 0, /* bitpos */ | |
1952 | complain_overflow_dont,/* complain_on_overflow */ | |
1953 | bfd_elf_generic_reloc, /* special_function */ | |
1954 | "R_PPC64_REL16_LO", /* name */ | |
1955 | FALSE, /* partial_inplace */ | |
1956 | 0, /* src_mask */ | |
1957 | 0xffff, /* dst_mask */ | |
1958 | TRUE), /* pcrel_offset */ | |
1959 | ||
1960 | /* The high order 16 bits of a relative address. */ | |
1961 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1962 | 16, /* rightshift */ | |
1963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1964 | 16, /* bitsize */ | |
1965 | TRUE, /* pc_relative */ | |
1966 | 0, /* bitpos */ | |
1967 | complain_overflow_dont, /* complain_on_overflow */ | |
1968 | bfd_elf_generic_reloc, /* special_function */ | |
1969 | "R_PPC64_REL16_HI", /* name */ | |
1970 | FALSE, /* partial_inplace */ | |
1971 | 0, /* src_mask */ | |
1972 | 0xffff, /* dst_mask */ | |
1973 | TRUE), /* pcrel_offset */ | |
1974 | ||
1975 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1976 | the low 16 bits, treated as a signed number, is negative. */ | |
1977 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1978 | 16, /* rightshift */ | |
1979 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1980 | 16, /* bitsize */ | |
1981 | TRUE, /* pc_relative */ | |
1982 | 0, /* bitpos */ | |
1983 | complain_overflow_dont, /* complain_on_overflow */ | |
1984 | ppc64_elf_ha_reloc, /* special_function */ | |
1985 | "R_PPC64_REL16_HA", /* name */ | |
1986 | FALSE, /* partial_inplace */ | |
1987 | 0, /* src_mask */ | |
1988 | 0xffff, /* dst_mask */ | |
1989 | TRUE), /* pcrel_offset */ | |
1990 | ||
5bd4f169 AM |
1991 | /* GNU extension to record C++ vtable hierarchy. */ |
1992 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1993 | 0, /* rightshift */ | |
1994 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1995 | 0, /* bitsize */ | |
b34976b6 | 1996 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1997 | 0, /* bitpos */ |
1998 | complain_overflow_dont, /* complain_on_overflow */ | |
1999 | NULL, /* special_function */ | |
2000 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2001 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2002 | 0, /* src_mask */ |
2003 | 0, /* dst_mask */ | |
b34976b6 | 2004 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2005 | |
2006 | /* GNU extension to record C++ vtable member usage. */ | |
2007 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2008 | 0, /* rightshift */ | |
2009 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2010 | 0, /* bitsize */ | |
b34976b6 | 2011 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2012 | 0, /* bitpos */ |
2013 | complain_overflow_dont, /* complain_on_overflow */ | |
2014 | NULL, /* special_function */ | |
2015 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2017 | 0, /* src_mask */ |
2018 | 0, /* dst_mask */ | |
b34976b6 | 2019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2020 | }; |
2021 | ||
2022 | \f | |
2023 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2024 | be done. */ | |
2025 | ||
2026 | static void | |
4ce794b7 | 2027 | ppc_howto_init (void) |
5bd4f169 AM |
2028 | { |
2029 | unsigned int i, type; | |
2030 | ||
2031 | for (i = 0; | |
2032 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2033 | i++) | |
2034 | { | |
2035 | type = ppc64_elf_howto_raw[i].type; | |
2036 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2037 | / sizeof (ppc64_elf_howto_table[0]))); | |
2038 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | static reloc_howto_type * | |
4ce794b7 AM |
2043 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2044 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2045 | { |
411e1bfb | 2046 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2047 | |
2048 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2049 | /* Initialize howto table if needed. */ | |
2050 | ppc_howto_init (); | |
2051 | ||
4ce794b7 | 2052 | switch (code) |
5bd4f169 AM |
2053 | { |
2054 | default: | |
4ce794b7 | 2055 | return NULL; |
5bd4f169 | 2056 | |
411e1bfb AM |
2057 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2058 | break; | |
2059 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2062 | break; | |
2063 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2064 | break; | |
2065 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2066 | break; | |
2067 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2068 | break; | |
2069 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 2070 | break; |
411e1bfb | 2071 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2072 | break; |
411e1bfb | 2073 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2074 | break; |
411e1bfb | 2075 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2076 | break; |
411e1bfb | 2077 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2078 | break; |
411e1bfb | 2079 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2080 | break; |
411e1bfb | 2081 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2082 | break; |
411e1bfb | 2083 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2084 | break; |
411e1bfb | 2085 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2086 | break; |
411e1bfb | 2087 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2088 | break; |
411e1bfb | 2089 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2090 | break; |
411e1bfb | 2091 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2092 | break; |
411e1bfb | 2093 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2094 | break; |
411e1bfb | 2095 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2096 | break; |
411e1bfb | 2097 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2098 | break; |
411e1bfb | 2099 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2100 | break; |
411e1bfb | 2101 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2102 | break; |
411e1bfb | 2103 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2104 | break; |
411e1bfb | 2105 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2106 | break; |
411e1bfb | 2107 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2108 | break; |
411e1bfb | 2109 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2110 | break; |
411e1bfb | 2111 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2112 | break; |
411e1bfb | 2113 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2114 | break; |
411e1bfb | 2115 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2116 | break; |
411e1bfb | 2117 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2118 | break; |
411e1bfb | 2119 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2120 | break; |
411e1bfb | 2121 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2122 | break; |
411e1bfb | 2123 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2124 | break; |
411e1bfb | 2125 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2126 | break; |
411e1bfb | 2127 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2128 | break; |
411e1bfb | 2129 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2130 | break; |
411e1bfb | 2131 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2132 | break; |
411e1bfb | 2133 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2134 | break; |
411e1bfb | 2135 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2136 | break; |
411e1bfb | 2137 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2138 | break; |
411e1bfb | 2139 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2140 | break; |
411e1bfb | 2141 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2142 | break; |
411e1bfb | 2143 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2144 | break; |
411e1bfb | 2145 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2146 | break; |
411e1bfb | 2147 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2148 | break; |
411e1bfb | 2149 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2150 | break; |
411e1bfb | 2151 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2152 | break; |
411e1bfb | 2153 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2154 | break; |
411e1bfb | 2155 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2156 | break; |
411e1bfb | 2157 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2158 | break; |
411e1bfb | 2159 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2160 | break; |
411e1bfb | 2161 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2162 | break; |
411e1bfb | 2163 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2164 | break; |
411e1bfb | 2165 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2166 | break; |
411e1bfb | 2167 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2168 | break; |
411e1bfb | 2169 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2170 | break; |
411e1bfb | 2171 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2172 | break; |
411e1bfb | 2173 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2174 | break; |
411e1bfb | 2175 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2176 | break; |
727fc41e AM |
2177 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2178 | break; | |
2179 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2180 | break; | |
411e1bfb | 2181 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2182 | break; |
411e1bfb | 2183 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2184 | break; |
411e1bfb | 2185 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2186 | break; |
411e1bfb | 2187 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2188 | break; |
411e1bfb | 2189 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2190 | break; |
411e1bfb | 2191 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2192 | break; |
411e1bfb AM |
2193 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2194 | break; | |
2195 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2196 | break; | |
2197 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2198 | break; | |
2199 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2200 | break; | |
2201 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2202 | break; | |
2203 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2204 | break; | |
2205 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2206 | break; | |
2207 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2208 | break; | |
2209 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2210 | break; | |
2211 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2212 | break; | |
2213 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2214 | break; | |
2215 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2216 | break; | |
2217 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2218 | break; | |
2219 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2220 | break; | |
2221 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2222 | break; | |
2223 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2224 | break; | |
2225 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2226 | break; | |
2227 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2228 | break; | |
2229 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2230 | break; | |
2231 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2232 | break; | |
2233 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2234 | break; | |
2235 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2236 | break; | |
2237 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2238 | break; | |
2239 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2240 | break; | |
2241 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2242 | break; | |
2243 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2244 | break; | |
2245 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2246 | break; | |
2247 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2248 | break; | |
2249 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2250 | break; | |
2251 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2252 | break; | |
2253 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2254 | break; | |
2255 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2256 | break; | |
2257 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2258 | break; | |
25f23106 AM |
2259 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2260 | break; | |
2261 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2262 | break; | |
2263 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2264 | break; | |
2265 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2266 | break; | |
411e1bfb AM |
2267 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2268 | break; | |
2269 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2270 | break; |
2271 | } | |
2272 | ||
4ce794b7 | 2273 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2274 | }; |
2275 | ||
157090f7 AM |
2276 | static reloc_howto_type * |
2277 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2278 | const char *r_name) | |
2279 | { | |
2280 | unsigned int i; | |
2281 | ||
2282 | for (i = 0; | |
2283 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2284 | i++) | |
2285 | if (ppc64_elf_howto_raw[i].name != NULL | |
2286 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2287 | return &ppc64_elf_howto_raw[i]; | |
2288 | ||
2289 | return NULL; | |
2290 | } | |
2291 | ||
5bd4f169 AM |
2292 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2293 | ||
2294 | static void | |
4ce794b7 AM |
2295 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2296 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2297 | { |
65f38f15 AM |
2298 | unsigned int type; |
2299 | ||
ef60b7ff | 2300 | /* Initialize howto table if needed. */ |
5bd4f169 | 2301 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2302 | ppc_howto_init (); |
2303 | ||
65f38f15 | 2304 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2305 | if (type >= (sizeof (ppc64_elf_howto_table) |
2306 | / sizeof (ppc64_elf_howto_table[0]))) | |
2307 | { | |
2308 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2309 | abfd, (int) type); |
2310 | type = R_PPC64_NONE; | |
d0fb9a8d | 2311 | } |
65f38f15 | 2312 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2313 | } |
2314 | ||
04c9666a | 2315 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2316 | |
2317 | static bfd_reloc_status_type | |
4ce794b7 AM |
2318 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2319 | void *data, asection *input_section, | |
2320 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2321 | { |
805fc799 AM |
2322 | /* If this is a relocatable link (output_bfd test tells us), just |
2323 | call the generic function. Any adjustment will be done at final | |
2324 | link time. */ | |
2325 | if (output_bfd != NULL) | |
cedb70c5 | 2326 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2327 | input_section, output_bfd, error_message); |
2328 | ||
2329 | /* Adjust the addend for sign extension of the low 16 bits. | |
2330 | We won't actually be using the low 16 bits, so trashing them | |
2331 | doesn't matter. */ | |
2332 | reloc_entry->addend += 0x8000; | |
2333 | return bfd_reloc_continue; | |
2334 | } | |
5bd4f169 | 2335 | |
2441e016 AM |
2336 | static bfd_reloc_status_type |
2337 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2338 | void *data, asection *input_section, | |
2339 | bfd *output_bfd, char **error_message) | |
2340 | { | |
2341 | if (output_bfd != NULL) | |
2342 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2343 | input_section, output_bfd, error_message); | |
2344 | ||
699733f6 AM |
2345 | if (strcmp (symbol->section->name, ".opd") == 0 |
2346 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2347 | { |
2348 | bfd_vma dest = opd_entry_value (symbol->section, | |
2349 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2350 | NULL, NULL, FALSE); |
2441e016 AM |
2351 | if (dest != (bfd_vma) -1) |
2352 | reloc_entry->addend = dest - (symbol->value | |
2353 | + symbol->section->output_section->vma | |
2354 | + symbol->section->output_offset); | |
2355 | } | |
2356 | return bfd_reloc_continue; | |
2357 | } | |
2358 | ||
805fc799 | 2359 | static bfd_reloc_status_type |
4ce794b7 AM |
2360 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2361 | void *data, asection *input_section, | |
2362 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2363 | { |
2364 | long insn; | |
04c9666a | 2365 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2366 | bfd_size_type octets; |
794e51c0 AM |
2367 | /* Assume 'at' branch hints. */ |
2368 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2369 | |
2370 | /* If this is a relocatable link (output_bfd test tells us), just | |
2371 | call the generic function. Any adjustment will be done at final | |
2372 | link time. */ | |
5bd4f169 | 2373 | if (output_bfd != NULL) |
cedb70c5 | 2374 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2375 | input_section, output_bfd, error_message); |
2376 | ||
2377 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2378 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2379 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2380 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2381 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2382 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2383 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2384 | |
794e51c0 | 2385 | if (is_isa_v2) |
5bd4f169 | 2386 | { |
805fc799 AM |
2387 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2388 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2389 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2390 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2391 | insn |= 0x02 << 21; | |
2392 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2393 | insn |= 0x08 << 21; | |
2394 | else | |
2441e016 | 2395 | goto out; |
5bd4f169 | 2396 | } |
805fc799 AM |
2397 | else |
2398 | { | |
2399 | bfd_vma target = 0; | |
2400 | bfd_vma from; | |
5bd4f169 | 2401 | |
805fc799 AM |
2402 | if (!bfd_is_com_section (symbol->section)) |
2403 | target = symbol->value; | |
2404 | target += symbol->section->output_section->vma; | |
2405 | target += symbol->section->output_offset; | |
2406 | target += reloc_entry->addend; | |
5bd4f169 | 2407 | |
805fc799 AM |
2408 | from = (reloc_entry->address |
2409 | + input_section->output_offset | |
2410 | + input_section->output_section->vma); | |
5bd4f169 | 2411 | |
805fc799 AM |
2412 | /* Invert 'y' bit if not the default. */ |
2413 | if ((bfd_signed_vma) (target - from) < 0) | |
2414 | insn ^= 0x01 << 21; | |
2415 | } | |
4ce794b7 | 2416 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2417 | out: |
2418 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2419 | input_section, output_bfd, error_message); | |
805fc799 | 2420 | } |
5bd4f169 | 2421 | |
805fc799 | 2422 | static bfd_reloc_status_type |
4ce794b7 AM |
2423 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2424 | void *data, asection *input_section, | |
2425 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2426 | { |
2427 | /* If this is a relocatable link (output_bfd test tells us), just | |
2428 | call the generic function. Any adjustment will be done at final | |
2429 | link time. */ | |
2430 | if (output_bfd != NULL) | |
cedb70c5 | 2431 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2432 | input_section, output_bfd, error_message); |
5bd4f169 | 2433 | |
805fc799 AM |
2434 | /* Subtract the symbol section base address. */ |
2435 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2436 | return bfd_reloc_continue; |
2437 | } | |
2438 | ||
805fc799 | 2439 | static bfd_reloc_status_type |
4ce794b7 AM |
2440 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2441 | void *data, asection *input_section, | |
2442 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2443 | { |
2444 | /* If this is a relocatable link (output_bfd test tells us), just | |
2445 | call the generic function. Any adjustment will be done at final | |
2446 | link time. */ | |
2447 | if (output_bfd != NULL) | |
cedb70c5 | 2448 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2449 | input_section, output_bfd, error_message); |
2450 | ||
2451 | /* Subtract the symbol section base address. */ | |
2452 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2453 | ||
2454 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2455 | reloc_entry->addend += 0x8000; | |
2456 | return bfd_reloc_continue; | |
2457 | } | |
2458 | ||
2459 | static bfd_reloc_status_type | |
4ce794b7 AM |
2460 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2461 | void *data, asection *input_section, | |
2462 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2463 | { |
2464 | bfd_vma TOCstart; | |
2465 | ||
2466 | /* If this is a relocatable link (output_bfd test tells us), just | |
2467 | call the generic function. Any adjustment will be done at final | |
2468 | link time. */ | |
2469 | if (output_bfd != NULL) | |
cedb70c5 | 2470 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2471 | input_section, output_bfd, error_message); |
2472 | ||
2473 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2474 | if (TOCstart == 0) | |
1c865ab2 | 2475 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2476 | |
2477 | /* Subtract the TOC base address. */ | |
2478 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2479 | return bfd_reloc_continue; | |
2480 | } | |
2481 | ||
2482 | static bfd_reloc_status_type | |
4ce794b7 AM |
2483 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2484 | void *data, asection *input_section, | |
2485 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2486 | { |
2487 | bfd_vma TOCstart; | |
2488 | ||
2489 | /* If this is a relocatable link (output_bfd test tells us), just | |
2490 | call the generic function. Any adjustment will be done at final | |
2491 | link time. */ | |
2492 | if (output_bfd != NULL) | |
cedb70c5 | 2493 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2494 | input_section, output_bfd, error_message); |
2495 | ||
2496 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2497 | if (TOCstart == 0) | |
1c865ab2 | 2498 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2499 | |
2500 | /* Subtract the TOC base address. */ | |
2501 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2502 | ||
2503 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2504 | reloc_entry->addend += 0x8000; | |
2505 | return bfd_reloc_continue; | |
2506 | } | |
2507 | ||
2508 | static bfd_reloc_status_type | |
4ce794b7 AM |
2509 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2510 | void *data, asection *input_section, | |
2511 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2512 | { |
2513 | bfd_vma TOCstart; | |
2514 | bfd_size_type octets; | |
2515 | ||
2516 | /* If this is a relocatable link (output_bfd test tells us), just | |
2517 | call the generic function. Any adjustment will be done at final | |
2518 | link time. */ | |
2519 | if (output_bfd != NULL) | |
cedb70c5 | 2520 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2521 | input_section, output_bfd, error_message); |
2522 | ||
2523 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2524 | if (TOCstart == 0) | |
1c865ab2 | 2525 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2526 | |
2527 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2528 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2529 | return bfd_reloc_ok; | |
2530 | } | |
2531 | ||
2532 | static bfd_reloc_status_type | |
4ce794b7 AM |
2533 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2534 | void *data, asection *input_section, | |
2535 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2536 | { |
2537 | /* If this is a relocatable link (output_bfd test tells us), just | |
2538 | call the generic function. Any adjustment will be done at final | |
2539 | link time. */ | |
2540 | if (output_bfd != NULL) | |
cedb70c5 | 2541 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2542 | input_section, output_bfd, error_message); |
2543 | ||
2544 | if (error_message != NULL) | |
2545 | { | |
2546 | static char buf[60]; | |
2547 | sprintf (buf, "generic linker can't handle %s", | |
2548 | reloc_entry->howto->name); | |
2549 | *error_message = buf; | |
2550 | } | |
2551 | return bfd_reloc_dangerous; | |
2552 | } | |
2553 | ||
927be08e AM |
2554 | /* Track GOT entries needed for a given symbol. We might need more |
2555 | than one got entry per symbol. */ | |
2556 | struct got_entry | |
2557 | { | |
2558 | struct got_entry *next; | |
2559 | ||
2560 | /* The symbol addend that we'll be placing in the GOT. */ | |
2561 | bfd_vma addend; | |
2562 | ||
2563 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2564 | symbol referenced from different input files. This is to support | |
2565 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2566 | from one input file to another. After partitioning into TOC groups | |
2567 | we merge entries within the group. | |
2568 | ||
2569 | Point to the BFD owning this GOT entry. */ | |
2570 | bfd *owner; | |
2571 | ||
2572 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2573 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2574 | unsigned char tls_type; |
927be08e AM |
2575 | |
2576 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2577 | unsigned char is_indirect; |
927be08e AM |
2578 | |
2579 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2580 | union | |
2581 | { | |
2582 | bfd_signed_vma refcount; | |
2583 | bfd_vma offset; | |
2584 | struct got_entry *ent; | |
2585 | } got; | |
2586 | }; | |
2587 | ||
2588 | /* The same for PLT. */ | |
2589 | struct plt_entry | |
2590 | { | |
2591 | struct plt_entry *next; | |
2592 | ||
2593 | bfd_vma addend; | |
2594 | ||
2595 | union | |
2596 | { | |
2597 | bfd_signed_vma refcount; | |
2598 | bfd_vma offset; | |
2599 | } plt; | |
2600 | }; | |
2601 | ||
e717da7e AM |
2602 | struct ppc64_elf_obj_tdata |
2603 | { | |
2604 | struct elf_obj_tdata elf; | |
2605 | ||
2606 | /* Shortcuts to dynamic linker sections. */ | |
2607 | asection *got; | |
2608 | asection *relgot; | |
2609 | ||
b3fac117 AM |
2610 | /* Used during garbage collection. We attach global symbols defined |
2611 | on removed .opd entries to this section so that the sym is removed. */ | |
2612 | asection *deleted_section; | |
81688140 | 2613 | |
927be08e | 2614 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2615 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2616 | struct got_entry tlsld_got; |
8860955f AM |
2617 | |
2618 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2619 | Elf_Internal_Rela *opd_relocs; | |
d77c8a4b AM |
2620 | |
2621 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2622 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2623 | unsigned int has_small_toc_reloc : 1; |
2624 | ||
560c8763 AM |
2625 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2626 | instruction not one we handle. */ | |
2627 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2628 | }; |
2629 | ||
2630 | #define ppc64_elf_tdata(bfd) \ | |
2631 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2632 | ||
2633 | #define ppc64_tlsld_got(bfd) \ | |
2634 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2635 | ||
0c8d6e5c AM |
2636 | #define is_ppc64_elf(bfd) \ |
2637 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2638 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2639 | |
e717da7e AM |
2640 | /* Override the generic function because we store some extras. */ |
2641 | ||
2642 | static bfd_boolean | |
2643 | ppc64_elf_mkobject (bfd *abfd) | |
2644 | { | |
0ffa91dd | 2645 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2646 | PPC64_ELF_DATA); |
e717da7e AM |
2647 | } |
2648 | ||
feee612b AM |
2649 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2650 | default is 32 bit. */ | |
2651 | ||
b34976b6 | 2652 | static bfd_boolean |
4ce794b7 | 2653 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2654 | { |
2655 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2656 | { | |
2657 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2658 | ||
2659 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2660 | { | |
2661 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2662 | abfd->arch_info = abfd->arch_info->next; | |
2663 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2664 | } | |
2665 | } | |
b34976b6 | 2666 | return TRUE; |
feee612b AM |
2667 | } |
2668 | ||
d37c89e5 AM |
2669 | /* Support for core dump NOTE sections. */ |
2670 | ||
2671 | static bfd_boolean | |
2672 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2673 | { | |
eea6121a | 2674 | size_t offset, size; |
d37c89e5 AM |
2675 | |
2676 | if (note->descsz != 504) | |
2677 | return FALSE; | |
2678 | ||
2679 | /* pr_cursig */ | |
228e534f | 2680 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2681 | |
2682 | /* pr_pid */ | |
228e534f | 2683 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2684 | |
2685 | /* pr_reg */ | |
2686 | offset = 112; | |
eea6121a | 2687 | size = 384; |
d37c89e5 AM |
2688 | |
2689 | /* Make a ".reg/999" section. */ | |
2690 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2691 | size, note->descpos + offset); |
d37c89e5 AM |
2692 | } |
2693 | ||
2694 | static bfd_boolean | |
2695 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2696 | { | |
2697 | if (note->descsz != 136) | |
2698 | return FALSE; | |
2699 | ||
228e534f | 2700 | elf_tdata (abfd)->core->pid |
bc989cdc | 2701 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2702 | elf_tdata (abfd)->core->program |
d37c89e5 | 2703 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2704 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2705 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2706 | ||
2707 | return TRUE; | |
2708 | } | |
2709 | ||
183e98be AM |
2710 | static char * |
2711 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2712 | ...) | |
2713 | { | |
2714 | switch (note_type) | |
2715 | { | |
2716 | default: | |
2717 | return NULL; | |
2718 | ||
2719 | case NT_PRPSINFO: | |
2720 | { | |
2721 | char data[136]; | |
2722 | va_list ap; | |
2723 | ||
2724 | va_start (ap, note_type); | |
75cd47ed | 2725 | memset (data, 0, sizeof (data)); |
183e98be AM |
2726 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2727 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2728 | va_end (ap); | |
2729 | return elfcore_write_note (abfd, buf, bufsiz, | |
2730 | "CORE", note_type, data, sizeof (data)); | |
2731 | } | |
2732 | ||
2733 | case NT_PRSTATUS: | |
2734 | { | |
2735 | char data[504]; | |
2736 | va_list ap; | |
2737 | long pid; | |
2738 | int cursig; | |
2739 | const void *greg; | |
2740 | ||
2741 | va_start (ap, note_type); | |
2742 | memset (data, 0, 112); | |
2743 | pid = va_arg (ap, long); | |
2744 | bfd_put_32 (abfd, pid, data + 32); | |
2745 | cursig = va_arg (ap, int); | |
2746 | bfd_put_16 (abfd, cursig, data + 12); | |
2747 | greg = va_arg (ap, const void *); | |
2748 | memcpy (data + 112, greg, 384); | |
2749 | memset (data + 496, 0, 8); | |
2750 | va_end (ap); | |
2751 | return elfcore_write_note (abfd, buf, bufsiz, | |
2752 | "CORE", note_type, data, sizeof (data)); | |
2753 | } | |
2754 | } | |
2755 | } | |
2756 | ||
5d35169e AM |
2757 | /* Add extra PPC sections. */ |
2758 | ||
b35d266b | 2759 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2760 | { |
0112cd26 NC |
2761 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2762 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2763 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2764 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2765 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2766 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2767 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2768 | }; |
2769 | ||
7c8fe5c4 AM |
2770 | enum _ppc64_sec_type { |
2771 | sec_normal = 0, | |
2772 | sec_opd = 1, | |
2773 | sec_toc = 2 | |
2774 | }; | |
2775 | ||
f0abc2a1 AM |
2776 | struct _ppc64_elf_section_data |
2777 | { | |
2778 | struct bfd_elf_section_data elf; | |
411e1bfb | 2779 | |
f0abc2a1 AM |
2780 | union |
2781 | { | |
74f0fb50 AM |
2782 | /* An array with one entry for each opd function descriptor. */ |
2783 | struct _opd_sec_data | |
2784 | { | |
2785 | /* Points to the function code section for local opd entries. */ | |
2786 | asection **func_sec; | |
2787 | ||
2788 | /* After editing .opd, adjust references to opd local syms. */ | |
2789 | long *adjust; | |
2790 | } opd; | |
7c8fe5c4 | 2791 | |
3a71aa26 AM |
2792 | /* An array for toc sections, indexed by offset/8. */ |
2793 | struct _toc_sec_data | |
2794 | { | |
2795 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2796 | unsigned *symndx; | |
2797 | ||
2798 | /* And the relocation addend. */ | |
2799 | bfd_vma *add; | |
2800 | } toc; | |
7c8fe5c4 AM |
2801 | } u; |
2802 | ||
2803 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2804 | |
7c8fe5c4 AM |
2805 | /* Flag set when small branches are detected. Used to |
2806 | select suitable defaults for the stub group size. */ | |
2807 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2808 | }; |
2809 | ||
2810 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2811 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2812 | |
2813 | static bfd_boolean | |
4ce794b7 | 2814 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2815 | { |
f592407e AM |
2816 | if (!sec->used_by_bfd) |
2817 | { | |
2818 | struct _ppc64_elf_section_data *sdata; | |
2819 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2820 | |
f592407e AM |
2821 | sdata = bfd_zalloc (abfd, amt); |
2822 | if (sdata == NULL) | |
2823 | return FALSE; | |
2824 | sec->used_by_bfd = sdata; | |
2825 | } | |
f0abc2a1 AM |
2826 | |
2827 | return _bfd_elf_new_section_hook (abfd, sec); | |
2828 | } | |
4025353c | 2829 | |
74f0fb50 | 2830 | static struct _opd_sec_data * |
4025353c AM |
2831 | get_opd_info (asection * sec) |
2832 | { | |
2833 | if (sec != NULL | |
2834 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2835 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2836 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2837 | return NULL; |
2838 | } | |
90e3cdf2 JJ |
2839 | \f |
2840 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2841 | static bfd_boolean synthetic_relocatable; |
2842 | ||
699733f6 | 2843 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2844 | |
2845 | static int | |
2846 | compare_symbols (const void *ap, const void *bp) | |
2847 | { | |
2848 | const asymbol *a = * (const asymbol **) ap; | |
2849 | const asymbol *b = * (const asymbol **) bp; | |
2850 | ||
699733f6 AM |
2851 | /* Section symbols first. */ |
2852 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2853 | return -1; |
699733f6 | 2854 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2855 | return 1; |
2856 | ||
699733f6 | 2857 | /* then .opd symbols. */ |
ffcfec52 AM |
2858 | if (strcmp (a->section->name, ".opd") == 0 |
2859 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2860 | return -1; |
ffcfec52 AM |
2861 | if (strcmp (a->section->name, ".opd") != 0 |
2862 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2863 | return 1; |
2864 | ||
699733f6 | 2865 | /* then other code symbols. */ |
90e3cdf2 JJ |
2866 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2867 | == (SEC_CODE | SEC_ALLOC) | |
2868 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2869 | != (SEC_CODE | SEC_ALLOC)) | |
2870 | return -1; | |
2871 | ||
2872 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2873 | != (SEC_CODE | SEC_ALLOC) | |
2874 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2875 | == (SEC_CODE | SEC_ALLOC)) | |
2876 | return 1; | |
2877 | ||
2878 | if (synthetic_relocatable) | |
2879 | { | |
2880 | if (a->section->id < b->section->id) | |
2881 | return -1; | |
2882 | ||
2883 | if (a->section->id > b->section->id) | |
2884 | return 1; | |
2885 | } | |
2886 | ||
2887 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2888 | return -1; | |
2889 | ||
2890 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2891 | return 1; | |
2892 | ||
4d35a0aa AM |
2893 | /* For syms with the same value, prefer strong dynamic global function |
2894 | syms over other syms. */ | |
2895 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2896 | return -1; | |
2897 | ||
2898 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2899 | return 1; | |
2900 | ||
2901 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2902 | return -1; | |
2903 | ||
2904 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2905 | return 1; | |
2906 | ||
2907 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2908 | return -1; | |
2909 | ||
2910 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2911 | return 1; | |
2912 | ||
2913 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2914 | return -1; | |
2915 | ||
2916 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2917 | return 1; | |
2918 | ||
90e3cdf2 JJ |
2919 | return 0; |
2920 | } | |
2921 | ||
699733f6 | 2922 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2923 | |
699733f6 AM |
2924 | static asymbol * |
2925 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2926 | { |
699733f6 | 2927 | long mid; |
90e3cdf2 | 2928 | |
699733f6 AM |
2929 | if (id == -1) |
2930 | { | |
2931 | while (lo < hi) | |
2932 | { | |
2933 | mid = (lo + hi) >> 1; | |
2934 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2935 | lo = mid + 1; | |
2936 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2937 | hi = mid; | |
2938 | else | |
2939 | return syms[mid]; | |
2940 | } | |
2941 | } | |
2942 | else | |
2943 | { | |
2944 | while (lo < hi) | |
2945 | { | |
2946 | mid = (lo + hi) >> 1; | |
2947 | if (syms[mid]->section->id < id) | |
2948 | lo = mid + 1; | |
2949 | else if (syms[mid]->section->id > id) | |
2950 | hi = mid; | |
2951 | else if (syms[mid]->value < value) | |
2952 | lo = mid + 1; | |
2953 | else if (syms[mid]->value > value) | |
2954 | hi = mid; | |
2955 | else | |
2956 | return syms[mid]; | |
2957 | } | |
2958 | } | |
2959 | return NULL; | |
90e3cdf2 JJ |
2960 | } |
2961 | ||
468392fb AM |
2962 | static bfd_boolean |
2963 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2964 | { | |
2965 | bfd_vma vma = *(bfd_vma *) ptr; | |
2966 | return ((section->flags & SEC_ALLOC) != 0 | |
2967 | && section->vma <= vma | |
2968 | && vma < section->vma + section->size); | |
2969 | } | |
2970 | ||
699733f6 | 2971 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2972 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2973 | |
2974 | static long | |
a7535cf3 AM |
2975 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2976 | long static_count, asymbol **static_syms, | |
2977 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2978 | asymbol **ret) |
90e3cdf2 JJ |
2979 | { |
2980 | asymbol *s; | |
699733f6 AM |
2981 | long i; |
2982 | long count; | |
90e3cdf2 | 2983 | char *names; |
a7535cf3 | 2984 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2985 | asection *opd; |
90e3cdf2 | 2986 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2987 | asymbol **syms; |
90e3cdf2 JJ |
2988 | |
2989 | *ret = NULL; | |
2990 | ||
2991 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2992 | if (opd == NULL) | |
2993 | return 0; | |
2994 | ||
a7535cf3 | 2995 | symcount = static_count; |
c9727e01 | 2996 | if (!relocatable) |
a7535cf3 | 2997 | symcount += dyn_count; |
90e3cdf2 | 2998 | if (symcount == 0) |
c9727e01 | 2999 | return 0; |
90e3cdf2 | 3000 | |
a7535cf3 AM |
3001 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3002 | if (syms == NULL) | |
7356fed5 | 3003 | return -1; |
a7535cf3 AM |
3004 | |
3005 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3006 | { | |
3007 | /* Use both symbol tables. */ | |
3008 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3009 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3010 | } | |
3011 | else if (!relocatable && static_count == 0) | |
3012 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3013 | else | |
3014 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3015 | ||
90e3cdf2 | 3016 | synthetic_relocatable = relocatable; |
595da8c5 | 3017 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3018 | |
c9727e01 AM |
3019 | if (!relocatable && symcount > 1) |
3020 | { | |
3021 | long j; | |
3022 | /* Trim duplicate syms, since we may have merged the normal and | |
3023 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3024 | different values, so trim any with the same value. */ |
c9727e01 AM |
3025 | for (i = 1, j = 1; i < symcount; ++i) |
3026 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3027 | != syms[i]->value + syms[i]->section->vma) | |
3028 | syms[j++] = syms[i]; | |
3029 | symcount = j; | |
3030 | } | |
3031 | ||
699733f6 | 3032 | i = 0; |
ffcfec52 | 3033 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3034 | ++i; |
3035 | codesecsym = i; | |
90e3cdf2 | 3036 | |
699733f6 AM |
3037 | for (; i < symcount; ++i) |
3038 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3039 | != (SEC_CODE | SEC_ALLOC)) | |
3040 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3041 | break; | |
3042 | codesecsymend = i; | |
90e3cdf2 | 3043 | |
699733f6 AM |
3044 | for (; i < symcount; ++i) |
3045 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3046 | break; | |
3047 | secsymend = i; | |
90e3cdf2 | 3048 | |
699733f6 | 3049 | for (; i < symcount; ++i) |
ffcfec52 | 3050 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3051 | break; |
3052 | opdsymend = i; | |
90e3cdf2 | 3053 | |
699733f6 AM |
3054 | for (; i < symcount; ++i) |
3055 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3056 | != (SEC_CODE | SEC_ALLOC)) | |
3057 | break; | |
3058 | symcount = i; | |
3059 | ||
c9727e01 | 3060 | count = 0; |
90e3cdf2 | 3061 | |
699733f6 | 3062 | if (relocatable) |
90e3cdf2 | 3063 | { |
699733f6 AM |
3064 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3065 | arelent *r; | |
3066 | size_t size; | |
3067 | long relcount; | |
90e3cdf2 | 3068 | |
468392fb AM |
3069 | if (opdsymend == secsymend) |
3070 | goto done; | |
3071 | ||
699733f6 | 3072 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3073 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3074 | if (relcount == 0) |
c9727e01 | 3075 | goto done; |
90e3cdf2 | 3076 | |
7356fed5 AM |
3077 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3078 | { | |
3079 | count = -1; | |
3080 | goto done; | |
3081 | } | |
3082 | ||
699733f6 | 3083 | size = 0; |
595da8c5 | 3084 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3085 | { |
3086 | asymbol *sym; | |
90e3cdf2 | 3087 | |
595da8c5 | 3088 | while (r < opd->relocation + relcount |
699733f6 AM |
3089 | && r->address < syms[i]->value + opd->vma) |
3090 | ++r; | |
90e3cdf2 | 3091 | |
595da8c5 | 3092 | if (r == opd->relocation + relcount) |
699733f6 | 3093 | break; |
90e3cdf2 | 3094 | |
699733f6 AM |
3095 | if (r->address != syms[i]->value + opd->vma) |
3096 | continue; | |
90e3cdf2 | 3097 | |
699733f6 AM |
3098 | if (r->howto->type != R_PPC64_ADDR64) |
3099 | continue; | |
90e3cdf2 | 3100 | |
699733f6 AM |
3101 | sym = *r->sym_ptr_ptr; |
3102 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3103 | sym->section->id, sym->value + r->addend)) | |
3104 | { | |
3105 | ++count; | |
3106 | size += sizeof (asymbol); | |
3107 | size += strlen (syms[i]->name) + 2; | |
3108 | } | |
3109 | } | |
90e3cdf2 | 3110 | |
699733f6 AM |
3111 | s = *ret = bfd_malloc (size); |
3112 | if (s == NULL) | |
3113 | { | |
7356fed5 | 3114 | count = -1; |
c9727e01 | 3115 | goto done; |
699733f6 | 3116 | } |
90e3cdf2 | 3117 | |
699733f6 | 3118 | names = (char *) (s + count); |
90e3cdf2 | 3119 | |
595da8c5 | 3120 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3121 | { |
699733f6 | 3122 | asymbol *sym; |
90e3cdf2 | 3123 | |
595da8c5 | 3124 | while (r < opd->relocation + relcount |
699733f6 AM |
3125 | && r->address < syms[i]->value + opd->vma) |
3126 | ++r; | |
90e3cdf2 | 3127 | |
595da8c5 | 3128 | if (r == opd->relocation + relcount) |
699733f6 AM |
3129 | break; |
3130 | ||
3131 | if (r->address != syms[i]->value + opd->vma) | |
3132 | continue; | |
3133 | ||
3134 | if (r->howto->type != R_PPC64_ADDR64) | |
3135 | continue; | |
90e3cdf2 | 3136 | |
699733f6 AM |
3137 | sym = *r->sym_ptr_ptr; |
3138 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3139 | sym->section->id, sym->value + r->addend)) | |
3140 | { | |
3141 | size_t len; | |
3142 | ||
3143 | *s = *syms[i]; | |
6ba2a415 | 3144 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3145 | s->section = sym->section; |
3146 | s->value = sym->value + r->addend; | |
3147 | s->name = names; | |
3148 | *names++ = '.'; | |
3149 | len = strlen (syms[i]->name); | |
3150 | memcpy (names, syms[i]->name, len + 1); | |
3151 | names += len + 1; | |
6f610d07 UW |
3152 | /* Have udata.p point back to the original symbol this |
3153 | synthetic symbol was derived from. */ | |
3154 | s->udata.p = syms[i]; | |
699733f6 AM |
3155 | s++; |
3156 | } | |
3157 | } | |
3158 | } | |
3159 | else | |
90e3cdf2 | 3160 | { |
468392fb | 3161 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3162 | bfd_byte *contents; |
3163 | size_t size; | |
468392fb AM |
3164 | long plt_count = 0; |
3165 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3166 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3167 | arelent *p; | |
90e3cdf2 | 3168 | |
699733f6 AM |
3169 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3170 | { | |
3171 | if (contents) | |
c9727e01 AM |
3172 | { |
3173 | free_contents_and_exit: | |
3174 | free (contents); | |
3175 | } | |
7356fed5 | 3176 | count = -1; |
c9727e01 | 3177 | goto done; |
699733f6 | 3178 | } |
90e3cdf2 | 3179 | |
699733f6 AM |
3180 | size = 0; |
3181 | for (i = secsymend; i < opdsymend; ++i) | |
3182 | { | |
3183 | bfd_vma ent; | |
90e3cdf2 | 3184 | |
5ef11c02 AM |
3185 | /* Ignore bogus symbols. */ |
3186 | if (syms[i]->value > opd->size - 8) | |
3187 | continue; | |
3188 | ||
699733f6 AM |
3189 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3190 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3191 | { | |
3192 | ++count; | |
3193 | size += sizeof (asymbol); | |
3194 | size += strlen (syms[i]->name) + 2; | |
3195 | } | |
3196 | } | |
90e3cdf2 | 3197 | |
468392fb | 3198 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3199 | if (dyn_count != 0 |
3200 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3201 | { |
3202 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3203 | size_t extdynsize; | |
3204 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3205 | ||
3206 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3207 | goto free_contents_and_exit; | |
3208 | ||
3209 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3210 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3211 | ||
3212 | extdyn = dynbuf; | |
3213 | extdynend = extdyn + dynamic->size; | |
3214 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3215 | { | |
3216 | Elf_Internal_Dyn dyn; | |
3217 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3218 | ||
3219 | if (dyn.d_tag == DT_NULL) | |
3220 | break; | |
3221 | ||
3222 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3223 | { | |
3224 | /* The first glink stub starts at offset 32; see comment in | |
3225 | ppc64_elf_finish_dynamic_sections. */ | |
3226 | glink_vma = dyn.d_un.d_val + 32; | |
3227 | /* The .glink section usually does not survive the final | |
3228 | link; search for the section (usually .text) where the | |
3229 | glink stubs now reside. */ | |
3230 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3231 | &glink_vma); | |
3232 | break; | |
3233 | } | |
3234 | } | |
3235 | ||
3236 | free (dynbuf); | |
3237 | } | |
3238 | ||
3239 | if (glink != NULL) | |
3240 | { | |
3241 | /* Determine __glink trampoline by reading the relative branch | |
3242 | from the first glink stub. */ | |
3243 | bfd_byte buf[4]; | |
3244 | if (bfd_get_section_contents (abfd, glink, buf, | |
3245 | glink_vma + 4 - glink->vma, 4)) | |
3246 | { | |
3247 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3248 | insn ^= B_DOT; | |
3249 | if ((insn & ~0x3fffffc) == 0) | |
3250 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3251 | } | |
3252 | ||
3253 | if (resolv_vma) | |
3254 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3255 | |
066ee829 AM |
3256 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3257 | if (relplt != NULL) | |
3258 | { | |
3259 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3260 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3261 | goto free_contents_and_exit; | |
68ffbac6 | 3262 | |
066ee829 AM |
3263 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3264 | size += plt_count * sizeof (asymbol); | |
468392fb | 3265 | |
066ee829 AM |
3266 | p = relplt->relocation; |
3267 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3268 | { |
3269 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3270 | if (p->addend != 0) | |
3271 | size += sizeof ("+0x") - 1 + 16; | |
3272 | } | |
066ee829 | 3273 | } |
468392fb AM |
3274 | } |
3275 | ||
699733f6 AM |
3276 | s = *ret = bfd_malloc (size); |
3277 | if (s == NULL) | |
7356fed5 | 3278 | goto free_contents_and_exit; |
90e3cdf2 | 3279 | |
468392fb | 3280 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3281 | |
699733f6 | 3282 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3283 | { |
699733f6 | 3284 | bfd_vma ent; |
90e3cdf2 | 3285 | |
5ef11c02 AM |
3286 | if (syms[i]->value > opd->size - 8) |
3287 | continue; | |
3288 | ||
699733f6 AM |
3289 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3290 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3291 | { |
c9727e01 | 3292 | long lo, hi; |
699733f6 | 3293 | size_t len; |
c9727e01 | 3294 | asection *sec = abfd->sections; |
90e3cdf2 | 3295 | |
699733f6 AM |
3296 | *s = *syms[i]; |
3297 | lo = codesecsym; | |
3298 | hi = codesecsymend; | |
3299 | while (lo < hi) | |
3300 | { | |
c9727e01 | 3301 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3302 | if (syms[mid]->section->vma < ent) |
3303 | lo = mid + 1; | |
3304 | else if (syms[mid]->section->vma > ent) | |
3305 | hi = mid; | |
3306 | else | |
c9727e01 AM |
3307 | { |
3308 | sec = syms[mid]->section; | |
3309 | break; | |
3310 | } | |
699733f6 AM |
3311 | } |
3312 | ||
c9727e01 | 3313 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3314 | sec = syms[lo - 1]->section; |
699733f6 AM |
3315 | |
3316 | for (; sec != NULL; sec = sec->next) | |
3317 | { | |
3318 | if (sec->vma > ent) | |
3319 | break; | |
63524580 JK |
3320 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3321 | info file. */ | |
3322 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3323 | break; |
3324 | if ((sec->flags & SEC_CODE) != 0) | |
3325 | s->section = sec; | |
3326 | } | |
6ba2a415 | 3327 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3328 | s->value = ent - s->section->vma; |
3329 | s->name = names; | |
3330 | *names++ = '.'; | |
3331 | len = strlen (syms[i]->name); | |
3332 | memcpy (names, syms[i]->name, len + 1); | |
3333 | names += len + 1; | |
6f610d07 UW |
3334 | /* Have udata.p point back to the original symbol this |
3335 | synthetic symbol was derived from. */ | |
3336 | s->udata.p = syms[i]; | |
699733f6 | 3337 | s++; |
90e3cdf2 | 3338 | } |
90e3cdf2 | 3339 | } |
699733f6 | 3340 | free (contents); |
468392fb AM |
3341 | |
3342 | if (glink != NULL && relplt != NULL) | |
3343 | { | |
3344 | if (resolv_vma) | |
3345 | { | |
3346 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3347 | memset (s, 0, sizeof *s); |
468392fb | 3348 | s->the_bfd = abfd; |
6ba2a415 | 3349 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3350 | s->section = glink; |
3351 | s->value = resolv_vma - glink->vma; | |
3352 | s->name = names; | |
3353 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3354 | names += sizeof ("__glink_PLTresolve"); | |
3355 | s++; | |
3356 | count++; | |
3357 | } | |
3358 | ||
3359 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3360 | stub rather than on the glink branch table entry. The | |
3361 | objdump disassembler would then use a sensible symbol | |
3362 | name on plt calls. The difficulty in doing so is | |
3363 | a) finding the stubs, and, | |
3364 | b) matching stubs against plt entries, and, | |
3365 | c) there can be multiple stubs for a given plt entry. | |
3366 | ||
3367 | Solving (a) could be done by code scanning, but older | |
3368 | ppc64 binaries used different stubs to current code. | |
3369 | (b) is the tricky one since you need to known the toc | |
3370 | pointer for at least one function that uses a pic stub to | |
3371 | be able to calculate the plt address referenced. | |
3372 | (c) means gdb would need to set multiple breakpoints (or | |
3373 | find the glink branch itself) when setting breakpoints | |
3374 | for pending shared library loads. */ | |
3375 | p = relplt->relocation; | |
3376 | for (i = 0; i < plt_count; i++, p++) | |
3377 | { | |
3378 | size_t len; | |
3379 | ||
3380 | *s = **p->sym_ptr_ptr; | |
3381 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3382 | we are defining a symbol, ensure one of them is set. */ | |
3383 | if ((s->flags & BSF_LOCAL) == 0) | |
3384 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3385 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3386 | s->section = glink; |
3387 | s->value = glink_vma - glink->vma; | |
3388 | s->name = names; | |
3389 | s->udata.p = NULL; | |
3390 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3391 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3392 | names += len; | |
e054468f AM |
3393 | if (p->addend != 0) |
3394 | { | |
3395 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3396 | names += sizeof ("+0x") - 1; | |
3397 | bfd_sprintf_vma (abfd, names, p->addend); | |
3398 | names += strlen (names); | |
3399 | } | |
468392fb AM |
3400 | memcpy (names, "@plt", sizeof ("@plt")); |
3401 | names += sizeof ("@plt"); | |
3402 | s++; | |
3403 | glink_vma += 8; | |
3404 | if (i >= 0x8000) | |
3405 | glink_vma += 4; | |
3406 | } | |
3407 | count += plt_count; | |
3408 | } | |
90e3cdf2 JJ |
3409 | } |
3410 | ||
c9727e01 | 3411 | done: |
a7535cf3 | 3412 | free (syms); |
90e3cdf2 JJ |
3413 | return count; |
3414 | } | |
5bd4f169 | 3415 | \f |
65f38f15 AM |
3416 | /* The following functions are specific to the ELF linker, while |
3417 | functions above are used generally. Those named ppc64_elf_* are | |
3418 | called by the main ELF linker code. They appear in this file more | |
3419 | or less in the order in which they are called. eg. | |
3420 | ppc64_elf_check_relocs is called early in the link process, | |
3421 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3422 | called. |
3423 | ||
3424 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3425 | functions have both a function code symbol and a function descriptor | |
3426 | symbol. A call to foo in a relocatable object file looks like: | |
3427 | ||
3428 | . .text | |
3429 | . x: | |
3430 | . bl .foo | |
3431 | . nop | |
3432 | ||
3433 | The function definition in another object file might be: | |
3434 | ||
3435 | . .section .opd | |
3436 | . foo: .quad .foo | |
3437 | . .quad .TOC.@tocbase | |
3438 | . .quad 0 | |
3439 | . | |
3440 | . .text | |
3441 | . .foo: blr | |
3442 | ||
3443 | When the linker resolves the call during a static link, the branch | |
3444 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3445 | If the function definition is in a shared library, things are a little | |
3446 | different: The call goes via a plt call stub, the opd information gets | |
3447 | copied to the plt, and the linker patches the nop. | |
3448 | ||
3449 | . x: | |
3450 | . bl .foo_stub | |
3451 | . ld 2,40(1) | |
3452 | . | |
3453 | . | |
3454 | . .foo_stub: | |
3455 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3456 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3457 | . std 2,40(1) # this is the general idea |
3458 | . ld 11,0(12) | |
3459 | . ld 2,8(12) | |
3460 | . mtctr 11 | |
3461 | . ld 11,16(12) | |
3462 | . bctr | |
3463 | . | |
3464 | . .section .plt | |
3465 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3466 | ||
3467 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3468 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3469 | copying. | |
3470 | ||
3471 | What are the difficulties here? Well, firstly, the relocations | |
3472 | examined by the linker in check_relocs are against the function code | |
3473 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3474 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3475 | to carefully copy dynamic link information from one symbol to the other. | |
3476 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3477 | symbol as is normal for most other backends. We need foo dynamic | |
3478 | instead, at least for an application final link. However, when | |
3479 | creating a shared library containing foo, we need to have both symbols | |
3480 | dynamic so that references to .foo are satisfied during the early | |
3481 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3482 | definition from some other object, eg. a static library. |
3483 | ||
3484 | Update: As of August 2004, we support a new convention. Function | |
3485 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3486 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3487 | |
1d483afe | 3488 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3489 | selects those that must be copied when linking a shared library, |
3490 | even when the symbol is local. */ | |
65f38f15 | 3491 | |
1d483afe AM |
3492 | static int |
3493 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3494 | enum elf_ppc64_reloc_type r_type) | |
3495 | { | |
3496 | switch (r_type) | |
3497 | { | |
3498 | default: | |
3499 | return 1; | |
3500 | ||
3501 | case R_PPC64_REL32: | |
3502 | case R_PPC64_REL64: | |
3503 | case R_PPC64_REL30: | |
3504 | return 0; | |
3505 | ||
3506 | case R_PPC64_TPREL16: | |
3507 | case R_PPC64_TPREL16_LO: | |
3508 | case R_PPC64_TPREL16_HI: | |
3509 | case R_PPC64_TPREL16_HA: | |
3510 | case R_PPC64_TPREL16_DS: | |
3511 | case R_PPC64_TPREL16_LO_DS: | |
3512 | case R_PPC64_TPREL16_HIGHER: | |
3513 | case R_PPC64_TPREL16_HIGHERA: | |
3514 | case R_PPC64_TPREL16_HIGHEST: | |
3515 | case R_PPC64_TPREL16_HIGHESTA: | |
3516 | case R_PPC64_TPREL64: | |
3517 | return !info->executable; | |
3518 | } | |
3519 | } | |
65f38f15 | 3520 | |
f4656909 AM |
3521 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3522 | copying dynamic variables from a shared lib into an app's dynbss | |
3523 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3524 | shared lib. With code that gcc generates, it's vital that this be |
3525 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3526 | the address of a function descriptor, which resides in the .opd | |
3527 | section. gcc uses the descriptor directly rather than going via the | |
3528 | GOT as some other ABI's do, which means that initialized function | |
3529 | pointers must reference the descriptor. Thus, a function pointer | |
3530 | initialized to the address of a function in a shared library will | |
3531 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3532 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3533 | presents a problem as a plt entry for that function is also |
3534 | initialized from the function descriptor symbol and the copy reloc | |
3535 | may not be initialized first. */ | |
a23b6845 | 3536 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3537 | |
721956f4 | 3538 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3539 | string. */ |
3540 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3541 | |
3542 | /* Linker stubs. | |
3543 | ppc_stub_long_branch: | |
3544 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3545 | destination, but a 24 bit branch in a stub section will reach. | |
3546 | . b dest | |
3547 | ||
3548 | ppc_stub_plt_branch: | |
3549 | Similar to the above, but a 24 bit branch in the stub section won't | |
3550 | reach its destination. | |
87e226ce AM |
3551 | . addis %r12,%r2,xxx@toc@ha |
3552 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3553 | . mtctr %r11 |
3554 | . bctr | |
3555 | ||
3556 | ppc_stub_plt_call: | |
2c66dc6c AM |
3557 | Used to call a function in a shared library. If it so happens that |
3558 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3559 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3560 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3561 | . std %r2,40(%r1) |
87e226ce | 3562 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3563 | . mtctr %r11 |
ac2df442 | 3564 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3565 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3566 | . bctr |
ad8e1ba5 AM |
3567 | |
3568 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3569 | code to adjust the value and save r2 to support multiple toc sections. | |
3570 | A ppc_stub_long_branch with an r2 offset looks like: | |
3571 | . std %r2,40(%r1) | |
3572 | . addis %r2,%r2,off@ha | |
3573 | . addi %r2,%r2,off@l | |
3574 | . b dest | |
3575 | ||
3576 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3577 | . std %r2,40(%r1) | |
3578 | . addis %r12,%r2,xxx@toc@ha | |
3579 | . ld %r11,xxx@toc@l(%r12) | |
3580 | . addis %r2,%r2,off@ha | |
3581 | . addi %r2,%r2,off@l | |
3582 | . mtctr %r11 | |
3583 | . bctr | |
ac2df442 AM |
3584 | |
3585 | In cases where the "addis" instruction would add zero, the "addis" is | |
3586 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3587 | */ |
3588 | ||
3589 | enum ppc_stub_type { | |
3590 | ppc_stub_none, | |
3591 | ppc_stub_long_branch, | |
ad8e1ba5 | 3592 | ppc_stub_long_branch_r2off, |
721956f4 | 3593 | ppc_stub_plt_branch, |
ad8e1ba5 | 3594 | ppc_stub_plt_branch_r2off, |
794e51c0 AM |
3595 | ppc_stub_plt_call, |
3596 | ppc_stub_plt_call_r2save | |
721956f4 AM |
3597 | }; |
3598 | ||
3599 | struct ppc_stub_hash_entry { | |
3600 | ||
3601 | /* Base hash table entry structure. */ | |
3602 | struct bfd_hash_entry root; | |
3603 | ||
ad8e1ba5 AM |
3604 | enum ppc_stub_type stub_type; |
3605 | ||
721956f4 AM |
3606 | /* The stub section. */ |
3607 | asection *stub_sec; | |
3608 | ||
3609 | /* Offset within stub_sec of the beginning of this stub. */ | |
3610 | bfd_vma stub_offset; | |
3611 | ||
3612 | /* Given the symbol's value and its section we can determine its final | |
3613 | value when building the stubs (so the stub knows where to jump. */ | |
3614 | bfd_vma target_value; | |
3615 | asection *target_section; | |
3616 | ||
721956f4 AM |
3617 | /* The symbol table entry, if any, that this was derived from. */ |
3618 | struct ppc_link_hash_entry *h; | |
e054468f | 3619 | struct plt_entry *plt_ent; |
721956f4 AM |
3620 | |
3621 | /* Where this stub is being called from, or, in the case of combined | |
3622 | stub sections, the first input section in the group. */ | |
3623 | asection *id_sec; | |
3624 | }; | |
3625 | ||
3626 | struct ppc_branch_hash_entry { | |
3627 | ||
3628 | /* Base hash table entry structure. */ | |
3629 | struct bfd_hash_entry root; | |
3630 | ||
c456f082 | 3631 | /* Offset within branch lookup table. */ |
721956f4 AM |
3632 | unsigned int offset; |
3633 | ||
3634 | /* Generation marker. */ | |
3635 | unsigned int iter; | |
3636 | }; | |
65f38f15 | 3637 | |
19e08130 AM |
3638 | /* Used to track dynamic relocations for local symbols. */ |
3639 | struct ppc_dyn_relocs | |
3640 | { | |
3641 | struct ppc_dyn_relocs *next; | |
3642 | ||
3643 | /* The input section of the reloc. */ | |
3644 | asection *sec; | |
3645 | ||
3646 | /* Total number of relocs copied for the input section. */ | |
3647 | unsigned int count : 31; | |
3648 | ||
3649 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3650 | unsigned int ifunc : 1; | |
3651 | }; | |
3652 | ||
65f38f15 AM |
3653 | struct ppc_link_hash_entry |
3654 | { | |
3655 | struct elf_link_hash_entry elf; | |
3656 | ||
b3fac117 AM |
3657 | union { |
3658 | /* A pointer to the most recently used stub hash entry against this | |
3659 | symbol. */ | |
3660 | struct ppc_stub_hash_entry *stub_cache; | |
3661 | ||
3662 | /* A pointer to the next symbol starting with a '.' */ | |
3663 | struct ppc_link_hash_entry *next_dot_sym; | |
3664 | } u; | |
721956f4 | 3665 | |
65f38f15 | 3666 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3667 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3668 | |
721956f4 | 3669 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3670 | struct ppc_link_hash_entry *oh; |
721956f4 | 3671 | |
e86ce104 AM |
3672 | /* Flag function code and descriptor symbols. */ |
3673 | unsigned int is_func:1; | |
3674 | unsigned int is_func_descriptor:1; | |
908b32fc | 3675 | unsigned int fake:1; |
411e1bfb | 3676 | |
c5614fa4 AM |
3677 | /* Whether global opd/toc sym has been adjusted or not. |
3678 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3679 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3680 | unsigned int adjust_done:1; |
3681 | ||
99877b66 AM |
3682 | /* Set if we twiddled this symbol to weak at some stage. */ |
3683 | unsigned int was_undefined:1; | |
3684 | ||
411e1bfb | 3685 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3686 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3687 | corresponding relocs are encountered during check_relocs. | |
3688 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3689 | indicate the corresponding GOT entry type is not needed. | |
3690 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3691 | a TPREL one. We use a separate flag rather than setting TPREL | |
3692 | just for convenience in distinguishing the two cases. */ | |
3693 | #define TLS_GD 1 /* GD reloc. */ | |
3694 | #define TLS_LD 2 /* LD reloc. */ | |
3695 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3696 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3697 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3698 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3699 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3700 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3701 | unsigned char tls_mask; |
65f38f15 AM |
3702 | }; |
3703 | ||
3704 | /* ppc64 ELF linker hash table. */ | |
3705 | ||
3706 | struct ppc_link_hash_table | |
3707 | { | |
3708 | struct elf_link_hash_table elf; | |
3709 | ||
721956f4 AM |
3710 | /* The stub hash table. */ |
3711 | struct bfd_hash_table stub_hash_table; | |
3712 | ||
3713 | /* Another hash table for plt_branch stubs. */ | |
3714 | struct bfd_hash_table branch_hash_table; | |
3715 | ||
3b421ab3 AM |
3716 | /* Hash table for function prologue tocsave. */ |
3717 | htab_t tocsave_htab; | |
3718 | ||
721956f4 AM |
3719 | /* Linker stub bfd. */ |
3720 | bfd *stub_bfd; | |
3721 | ||
3722 | /* Linker call-backs. */ | |
4ce794b7 AM |
3723 | asection * (*add_stub_section) (const char *, asection *); |
3724 | void (*layout_sections_again) (void); | |
721956f4 AM |
3725 | |
3726 | /* Array to keep track of which stub sections have been created, and | |
3727 | information on stub grouping. */ | |
3728 | struct map_stub { | |
3729 | /* This is the section to which stubs in the group will be attached. */ | |
3730 | asection *link_sec; | |
3731 | /* The stub section. */ | |
3732 | asection *stub_sec; | |
ad8e1ba5 AM |
3733 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3734 | bfd_vma toc_off; | |
721956f4 AM |
3735 | } *stub_group; |
3736 | ||
ad8e1ba5 AM |
3737 | /* Temp used when calculating TOC pointers. */ |
3738 | bfd_vma toc_curr; | |
bf102f86 AM |
3739 | bfd *toc_bfd; |
3740 | asection *toc_first_sec; | |
ad8e1ba5 | 3741 | |
8f3bab57 AM |
3742 | /* Highest input section id. */ |
3743 | int top_id; | |
3744 | ||
734b6cf9 AM |
3745 | /* Highest output section index. */ |
3746 | int top_index; | |
3747 | ||
b3fac117 AM |
3748 | /* Used when adding symbols. */ |
3749 | struct ppc_link_hash_entry *dot_syms; | |
3750 | ||
734b6cf9 AM |
3751 | /* List of input sections for each output section. */ |
3752 | asection **input_list; | |
721956f4 | 3753 | |
65f38f15 | 3754 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3755 | asection *got; |
4ce794b7 AM |
3756 | asection *plt; |
3757 | asection *relplt; | |
e054468f AM |
3758 | asection *iplt; |
3759 | asection *reliplt; | |
4ce794b7 AM |
3760 | asection *dynbss; |
3761 | asection *relbss; | |
3762 | asection *glink; | |
82bd7b59 | 3763 | asection *sfpr; |
4ce794b7 AM |
3764 | asection *brlt; |
3765 | asection *relbrlt; | |
58d180e8 | 3766 | asection *glink_eh_frame; |
ec338859 | 3767 | |
8387904d AM |
3768 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3769 | struct ppc_link_hash_entry *tls_get_addr; | |
3770 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3771 | |
927be08e AM |
3772 | /* The size of reliplt used by got entry relocs. */ |
3773 | bfd_size_type got_reli_size; | |
3774 | ||
9b5ecbd0 | 3775 | /* Statistics. */ |
794e51c0 | 3776 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
9b5ecbd0 | 3777 | |
ee75fd95 AM |
3778 | /* Number of stubs against global syms. */ |
3779 | unsigned long stub_globals; | |
3780 | ||
794e51c0 AM |
3781 | /* Alignment of PLT call stubs. */ |
3782 | unsigned int plt_stub_align:4; | |
3783 | ||
9df0ef5f AM |
3784 | /* Set if PLT call stubs should load r11. */ |
3785 | unsigned int plt_static_chain:1; | |
3786 | ||
794e51c0 AM |
3787 | /* Set if PLT call stubs need a read-read barrier. */ |
3788 | unsigned int plt_thread_safe:1; | |
3789 | ||
ad8e1ba5 | 3790 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3791 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3792 | |
a7f2871e AM |
3793 | /* Set if __tls_get_addr optimization should not be done. */ |
3794 | unsigned int no_tls_get_addr_opt:1; | |
3795 | ||
4c52953f | 3796 | /* Support for multiple toc sections. */ |
33c0ec9d | 3797 | unsigned int do_multi_toc:1; |
4c52953f | 3798 | unsigned int multi_toc_needed:1; |
927be08e | 3799 | unsigned int second_toc_pass:1; |
67f0cbdb | 3800 | unsigned int do_toc_opt:1; |
4c52953f | 3801 | |
5d1634d7 | 3802 | /* Set on error. */ |
99877b66 | 3803 | unsigned int stub_error:1; |
721956f4 | 3804 | |
7d9616d7 | 3805 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3806 | unsigned int twiddled_syms:1; |
721956f4 AM |
3807 | |
3808 | /* Incremented every time we size stubs. */ | |
3809 | unsigned int stub_iteration; | |
5d1634d7 | 3810 | |
87d72d41 AM |
3811 | /* Small local sym cache. */ |
3812 | struct sym_cache sym_cache; | |
65f38f15 AM |
3813 | }; |
3814 | ||
4c52953f AM |
3815 | /* Rename some of the generic section flags to better document how they |
3816 | are used here. */ | |
b0dddeec AM |
3817 | |
3818 | /* Nonzero if this section has TLS related relocations. */ | |
3819 | #define has_tls_reloc sec_flg0 | |
3820 | ||
3821 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3822 | #define has_tls_get_addr_call sec_flg1 | |
3823 | ||
3824 | /* Nonzero if this section has any toc or got relocs. */ | |
3825 | #define has_toc_reloc sec_flg2 | |
3826 | ||
3827 | /* Nonzero if this section has a call to another section that uses | |
3828 | the toc or got. */ | |
d77c8a4b | 3829 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3830 | |
3831 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3832 | #define call_check_in_progress sec_flg4 |
70cc837d | 3833 | #define call_check_done sec_flg5 |
4c52953f | 3834 | |
65f38f15 AM |
3835 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3836 | ||
3837 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3838 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3839 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3840 | |
721956f4 AM |
3841 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3842 | ((struct ppc_stub_hash_entry *) \ | |
3843 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3844 | ||
3845 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3846 | ((struct ppc_branch_hash_entry *) \ | |
3847 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3848 | ||
3849 | /* Create an entry in the stub hash table. */ | |
3850 | ||
3851 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3852 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3853 | struct bfd_hash_table *table, | |
3854 | const char *string) | |
721956f4 AM |
3855 | { |
3856 | /* Allocate the structure if it has not already been allocated by a | |
3857 | subclass. */ | |
3858 | if (entry == NULL) | |
3859 | { | |
3860 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3861 | if (entry == NULL) | |
3862 | return entry; | |
3863 | } | |
3864 | ||
3865 | /* Call the allocation method of the superclass. */ | |
3866 | entry = bfd_hash_newfunc (entry, table, string); | |
3867 | if (entry != NULL) | |
3868 | { | |
3869 | struct ppc_stub_hash_entry *eh; | |
3870 | ||
3871 | /* Initialize the local fields. */ | |
3872 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3873 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3874 | eh->stub_sec = NULL; |
3875 | eh->stub_offset = 0; | |
3876 | eh->target_value = 0; | |
3877 | eh->target_section = NULL; | |
721956f4 AM |
3878 | eh->h = NULL; |
3879 | eh->id_sec = NULL; | |
3880 | } | |
3881 | ||
3882 | return entry; | |
3883 | } | |
3884 | ||
3885 | /* Create an entry in the branch hash table. */ | |
3886 | ||
3887 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3888 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3889 | struct bfd_hash_table *table, | |
3890 | const char *string) | |
721956f4 AM |
3891 | { |
3892 | /* Allocate the structure if it has not already been allocated by a | |
3893 | subclass. */ | |
3894 | if (entry == NULL) | |
3895 | { | |
3896 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3897 | if (entry == NULL) | |
3898 | return entry; | |
3899 | } | |
3900 | ||
3901 | /* Call the allocation method of the superclass. */ | |
3902 | entry = bfd_hash_newfunc (entry, table, string); | |
3903 | if (entry != NULL) | |
3904 | { | |
3905 | struct ppc_branch_hash_entry *eh; | |
3906 | ||
3907 | /* Initialize the local fields. */ | |
3908 | eh = (struct ppc_branch_hash_entry *) entry; | |
3909 | eh->offset = 0; | |
3910 | eh->iter = 0; | |
3911 | } | |
3912 | ||
3913 | return entry; | |
3914 | } | |
3915 | ||
65f38f15 AM |
3916 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3917 | ||
3918 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3919 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3920 | struct bfd_hash_table *table, | |
3921 | const char *string) | |
65f38f15 AM |
3922 | { |
3923 | /* Allocate the structure if it has not already been allocated by a | |
3924 | subclass. */ | |
3925 | if (entry == NULL) | |
3926 | { | |
3927 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3928 | if (entry == NULL) | |
3929 | return entry; | |
3930 | } | |
3931 | ||
3932 | /* Call the allocation method of the superclass. */ | |
3933 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3934 | if (entry != NULL) | |
3935 | { | |
3936 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3937 | ||
b3fac117 | 3938 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3939 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3940 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3941 | ||
3942 | /* When making function calls, old ABI code references function entry | |
3943 | points (dot symbols), while new ABI code references the function | |
3944 | descriptor symbol. We need to make any combination of reference and | |
3945 | definition work together, without breaking archive linking. | |
3946 | ||
3947 | For a defined function "foo" and an undefined call to "bar": | |
3948 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3949 | "bar" too). | |
3950 | A new object defines "foo" and references "bar". | |
3951 | ||
3952 | A new object thus has no problem with its undefined symbols being | |
3953 | satisfied by definitions in an old object. On the other hand, the | |
3954 | old object won't have ".bar" satisfied by a new object. | |
3955 | ||
3956 | Keep a list of newly added dot-symbols. */ | |
3957 | ||
3958 | if (string[0] == '.') | |
3959 | { | |
3960 | struct ppc_link_hash_table *htab; | |
3961 | ||
3962 | htab = (struct ppc_link_hash_table *) table; | |
3963 | eh->u.next_dot_sym = htab->dot_syms; | |
3964 | htab->dot_syms = eh; | |
3965 | } | |
65f38f15 AM |
3966 | } |
3967 | ||
3968 | return entry; | |
3969 | } | |
3970 | ||
3b421ab3 AM |
3971 | struct tocsave_entry { |
3972 | asection *sec; | |
3973 | bfd_vma offset; | |
3974 | }; | |
3975 | ||
3976 | static hashval_t | |
3977 | tocsave_htab_hash (const void *p) | |
3978 | { | |
3979 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
3980 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
3981 | } | |
3982 | ||
3983 | static int | |
3984 | tocsave_htab_eq (const void *p1, const void *p2) | |
3985 | { | |
3986 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3987 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3988 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3989 | } | |
3990 | ||
65f38f15 AM |
3991 | /* Create a ppc64 ELF linker hash table. */ |
3992 | ||
3993 | static struct bfd_link_hash_table * | |
4ce794b7 | 3994 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3995 | { |
3996 | struct ppc_link_hash_table *htab; | |
3997 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3998 | ||
4ce794b7 | 3999 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4000 | if (htab == NULL) |
4001 | return NULL; | |
4002 | ||
66eb6687 | 4003 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4004 | sizeof (struct ppc_link_hash_entry), |
4005 | PPC64_ELF_DATA)) | |
65f38f15 | 4006 | { |
e2d34d7d | 4007 | free (htab); |
65f38f15 AM |
4008 | return NULL; |
4009 | } | |
4010 | ||
721956f4 | 4011 | /* Init the stub hash table too. */ |
66eb6687 AM |
4012 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4013 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
4014 | return NULL; |
4015 | ||
4016 | /* And the branch hash table. */ | |
66eb6687 AM |
4017 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4018 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
4019 | return NULL; |
4020 | ||
3b421ab3 AM |
4021 | htab->tocsave_htab = htab_try_create (1024, |
4022 | tocsave_htab_hash, | |
4023 | tocsave_htab_eq, | |
4024 | NULL); | |
4025 | if (htab->tocsave_htab == NULL) | |
4026 | return NULL; | |
4027 | ||
3254fd24 AM |
4028 | /* Initializing two fields of the union is just cosmetic. We really |
4029 | only care about glist, but when compiled on a 32-bit host the | |
4030 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4031 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4032 | htab->elf.init_got_refcount.refcount = 0; |
4033 | htab->elf.init_got_refcount.glist = NULL; | |
4034 | htab->elf.init_plt_refcount.refcount = 0; | |
4035 | htab->elf.init_plt_refcount.glist = NULL; | |
4036 | htab->elf.init_got_offset.offset = 0; | |
4037 | htab->elf.init_got_offset.glist = NULL; | |
4038 | htab->elf.init_plt_offset.offset = 0; | |
4039 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4040 | |
65f38f15 AM |
4041 | return &htab->elf.root; |
4042 | } | |
4043 | ||
721956f4 AM |
4044 | /* Free the derived linker hash table. */ |
4045 | ||
4046 | static void | |
4ce794b7 | 4047 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4048 | { |
3b421ab3 | 4049 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4050 | |
3b421ab3 AM |
4051 | bfd_hash_table_free (&htab->stub_hash_table); |
4052 | bfd_hash_table_free (&htab->branch_hash_table); | |
4053 | if (htab->tocsave_htab) | |
4054 | htab_delete (htab->tocsave_htab); | |
9f7c3e5e | 4055 | _bfd_elf_link_hash_table_free (hash); |
721956f4 AM |
4056 | } |
4057 | ||
bfeb4a28 AM |
4058 | /* Create sections for linker generated code. */ |
4059 | ||
4060 | static bfd_boolean | |
4061 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4062 | { | |
4063 | struct ppc_link_hash_table *htab; | |
4064 | flagword flags; | |
4065 | ||
4066 | htab = ppc_hash_table (info); | |
4067 | ||
4068 | /* Create .sfpr for code to save and restore fp regs. */ | |
4069 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4070 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4071 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4072 | flags); | |
4073 | if (htab->sfpr == NULL | |
4074 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4075 | return FALSE; | |
4076 | ||
4077 | /* Create .glink for lazy dynamic linking support. */ | |
4078 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4079 | flags); | |
4080 | if (htab->glink == NULL | |
4081 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4082 | return FALSE; | |
4083 | ||
4084 | if (!info->no_ld_generated_unwind_info) | |
4085 | { | |
4086 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4087 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4088 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4089 | ".eh_frame", | |
4090 | flags); | |
4091 | if (htab->glink_eh_frame == NULL | |
4092 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4093 | return FALSE; | |
4094 | } | |
4095 | ||
4096 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
4097 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4098 | if (htab->iplt == NULL | |
4099 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4100 | return FALSE; | |
4101 | ||
4102 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4103 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4104 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4105 | ".rela.iplt", | |
4106 | flags); | |
4107 | if (htab->reliplt == NULL | |
4108 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4109 | return FALSE; | |
4110 | ||
4111 | /* Create branch lookup table for plt_branch stubs. */ | |
4112 | flags = (SEC_ALLOC | SEC_LOAD | |
4113 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4114 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4115 | flags); | |
4116 | if (htab->brlt == NULL | |
4117 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4118 | return FALSE; | |
4119 | ||
4120 | if (!info->shared) | |
4121 | return TRUE; | |
4122 | ||
4123 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4124 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4125 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4126 | ".rela.branch_lt", | |
4127 | flags); | |
4128 | if (htab->relbrlt == NULL | |
4129 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4130 | return FALSE; | |
4131 | ||
4132 | return TRUE; | |
4133 | } | |
4134 | ||
e717da7e AM |
4135 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4136 | ||
bfeb4a28 | 4137 | bfd_boolean |
e717da7e AM |
4138 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) |
4139 | { | |
4140 | struct ppc_link_hash_table *htab; | |
4141 | ||
4142 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4143 | ||
4144 | /* Always hook our dynamic sections into the first bfd, which is the | |
4145 | linker created stub bfd. This ensures that the GOT header is at | |
4146 | the start of the output TOC section. */ | |
4147 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4148 | if (htab == NULL) |
bfeb4a28 | 4149 | return FALSE; |
e717da7e AM |
4150 | htab->stub_bfd = abfd; |
4151 | htab->elf.dynobj = abfd; | |
bfeb4a28 AM |
4152 | |
4153 | if (info->relocatable) | |
4154 | return TRUE; | |
4155 | ||
4156 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4157 | } |
4158 | ||
721956f4 AM |
4159 | /* Build a name for an entry in the stub hash table. */ |
4160 | ||
4161 | static char * | |
4ce794b7 AM |
4162 | ppc_stub_name (const asection *input_section, |
4163 | const asection *sym_sec, | |
4164 | const struct ppc_link_hash_entry *h, | |
4165 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4166 | { |
4167 | char *stub_name; | |
bcaa2f82 | 4168 | ssize_t len; |
721956f4 AM |
4169 | |
4170 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4171 | offsets from a sym as a branch target? In fact, we could | |
4172 | probably assume the addend is always zero. */ | |
4173 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4174 | ||
4175 | if (h) | |
4176 | { | |
4177 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4178 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4179 | if (stub_name == NULL) |
4180 | return stub_name; | |
4181 | ||
bcaa2f82 AM |
4182 | len = sprintf (stub_name, "%08x.%s+%x", |
4183 | input_section->id & 0xffffffff, | |
4184 | h->elf.root.root.string, | |
4185 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4186 | } |
4187 | else | |
4188 | { | |
ad8e1ba5 | 4189 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4190 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4191 | if (stub_name == NULL) |
4192 | return stub_name; | |
4193 | ||
bcaa2f82 AM |
4194 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4195 | input_section->id & 0xffffffff, | |
4196 | sym_sec->id & 0xffffffff, | |
4197 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4198 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4199 | } |
bcaa2f82 | 4200 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4201 | stub_name[len - 2] = 0; |
721956f4 AM |
4202 | return stub_name; |
4203 | } | |
4204 | ||
4205 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4206 | creating the stub name takes a bit of time. */ | |
4207 | ||
4208 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4209 | ppc_get_stub_entry (const asection *input_section, |
4210 | const asection *sym_sec, | |
039b3fef | 4211 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4212 | const Elf_Internal_Rela *rel, |
4213 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4214 | { |
4215 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4216 | const asection *id_sec; |
4217 | ||
4218 | /* If this input section is part of a group of sections sharing one | |
4219 | stub section, then use the id of the first section in the group. | |
4220 | Stub names need to include a section id, as there may well be | |
4221 | more than one stub used to reach say, printf, and we need to | |
4222 | distinguish between them. */ | |
4223 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4224 | ||
b3fac117 AM |
4225 | if (h != NULL && h->u.stub_cache != NULL |
4226 | && h->u.stub_cache->h == h | |
4227 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4228 | { |
b3fac117 | 4229 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4230 | } |
4231 | else | |
4232 | { | |
4233 | char *stub_name; | |
4234 | ||
4235 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4236 | if (stub_name == NULL) | |
4237 | return NULL; | |
4238 | ||
4239 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4240 | stub_name, FALSE, FALSE); |
721956f4 | 4241 | if (h != NULL) |
b3fac117 | 4242 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4243 | |
4244 | free (stub_name); | |
4245 | } | |
4246 | ||
4247 | return stub_entry; | |
4248 | } | |
4249 | ||
4250 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4251 | stub entry are initialised. */ | |
4252 | ||
4253 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4254 | ppc_add_stub (const char *stub_name, |
4255 | asection *section, | |
25f53a85 | 4256 | struct bfd_link_info *info) |
721956f4 | 4257 | { |
25f53a85 | 4258 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4259 | asection *link_sec; |
4260 | asection *stub_sec; | |
4261 | struct ppc_stub_hash_entry *stub_entry; | |
4262 | ||
4263 | link_sec = htab->stub_group[section->id].link_sec; | |
4264 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4265 | if (stub_sec == NULL) | |
4266 | { | |
4267 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4268 | if (stub_sec == NULL) | |
4269 | { | |
d4c88bbb | 4270 | size_t namelen; |
721956f4 AM |
4271 | bfd_size_type len; |
4272 | char *s_name; | |
4273 | ||
d4c88bbb AM |
4274 | namelen = strlen (link_sec->name); |
4275 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4276 | s_name = bfd_alloc (htab->stub_bfd, len); |
4277 | if (s_name == NULL) | |
4278 | return NULL; | |
4279 | ||
d4c88bbb AM |
4280 | memcpy (s_name, link_sec->name, namelen); |
4281 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4282 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4283 | if (stub_sec == NULL) | |
4284 | return NULL; | |
4285 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4286 | } | |
4287 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4288 | } | |
4289 | ||
4290 | /* Enter this entry into the linker stub hash table. */ | |
4291 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4292 | TRUE, FALSE); |
721956f4 AM |
4293 | if (stub_entry == NULL) |
4294 | { | |
8de848d8 | 4295 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4296 | section->owner, stub_name); |
721956f4 AM |
4297 | return NULL; |
4298 | } | |
4299 | ||
4300 | stub_entry->stub_sec = stub_sec; | |
4301 | stub_entry->stub_offset = 0; | |
4302 | stub_entry->id_sec = link_sec; | |
4303 | return stub_entry; | |
4304 | } | |
4305 | ||
e717da7e AM |
4306 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4307 | not already done. */ | |
65f38f15 | 4308 | |
b34976b6 | 4309 | static bfd_boolean |
e717da7e | 4310 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4311 | { |
e717da7e AM |
4312 | asection *got, *relgot; |
4313 | flagword flags; | |
4314 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4315 | |
0c8d6e5c | 4316 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4317 | return FALSE; |
4dfe6ac6 NC |
4318 | if (htab == NULL) |
4319 | return FALSE; | |
0ffa91dd | 4320 | |
4ce794b7 | 4321 | if (!htab->got) |
e717da7e AM |
4322 | { |
4323 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4324 | return FALSE; | |
4325 | ||
3d4d4302 | 4326 | htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got"); |
e717da7e AM |
4327 | if (!htab->got) |
4328 | abort (); | |
4329 | } | |
4330 | ||
4331 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4332 | | SEC_LINKER_CREATED); | |
4333 | ||
c456f082 | 4334 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4335 | if (!got |
e717da7e AM |
4336 | || !bfd_set_section_alignment (abfd, got, 3)) |
4337 | return FALSE; | |
65f38f15 | 4338 | |
c456f082 AM |
4339 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4340 | flags | SEC_READONLY); | |
e717da7e | 4341 | if (!relgot |
e717da7e | 4342 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4343 | return FALSE; |
e717da7e AM |
4344 | |
4345 | ppc64_elf_tdata (abfd)->got = got; | |
4346 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4347 | return TRUE; |
65f38f15 | 4348 | } |
5bd4f169 | 4349 | |
82bd7b59 | 4350 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4351 | |
b34976b6 | 4352 | static bfd_boolean |
4ce794b7 | 4353 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4354 | { |
65f38f15 | 4355 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4356 | |
65f38f15 | 4357 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4358 | return FALSE; |
65f38f15 | 4359 | |
e717da7e | 4360 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4361 | if (htab == NULL) |
4362 | return FALSE; | |
4363 | ||
e717da7e | 4364 | if (!htab->got) |
3d4d4302 AM |
4365 | htab->got = bfd_get_linker_section (dynobj, ".got"); |
4366 | htab->plt = bfd_get_linker_section (dynobj, ".plt"); | |
4367 | htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
4368 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
65f38f15 | 4369 | if (!info->shared) |
3d4d4302 | 4370 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4371 | |
e717da7e | 4372 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4373 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4374 | abort (); |
4375 | ||
b34976b6 | 4376 | return TRUE; |
5bd4f169 AM |
4377 | } |
4378 | ||
b31867b6 AM |
4379 | /* Follow indirect and warning symbol links. */ |
4380 | ||
4381 | static inline struct bfd_link_hash_entry * | |
4382 | follow_link (struct bfd_link_hash_entry *h) | |
4383 | { | |
4384 | while (h->type == bfd_link_hash_indirect | |
4385 | || h->type == bfd_link_hash_warning) | |
4386 | h = h->u.i.link; | |
4387 | return h; | |
4388 | } | |
4389 | ||
4390 | static inline struct elf_link_hash_entry * | |
4391 | elf_follow_link (struct elf_link_hash_entry *h) | |
4392 | { | |
4393 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4394 | } | |
4395 | ||
4396 | static inline struct ppc_link_hash_entry * | |
4397 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4398 | { | |
4399 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4400 | } | |
4401 | ||
40d16e0b AM |
4402 | /* Merge PLT info on FROM with that on TO. */ |
4403 | ||
4404 | static void | |
4405 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4406 | struct ppc_link_hash_entry *to) | |
4407 | { | |
4408 | if (from->elf.plt.plist != NULL) | |
4409 | { | |
4410 | if (to->elf.plt.plist != NULL) | |
4411 | { | |
4412 | struct plt_entry **entp; | |
4413 | struct plt_entry *ent; | |
4414 | ||
4415 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4416 | { | |
4417 | struct plt_entry *dent; | |
4418 | ||
4419 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4420 | if (dent->addend == ent->addend) | |
4421 | { | |
4422 | dent->plt.refcount += ent->plt.refcount; | |
4423 | *entp = ent->next; | |
4424 | break; | |
4425 | } | |
4426 | if (dent == NULL) | |
4427 | entp = &ent->next; | |
4428 | } | |
4429 | *entp = to->elf.plt.plist; | |
4430 | } | |
4431 | ||
4432 | to->elf.plt.plist = from->elf.plt.plist; | |
4433 | from->elf.plt.plist = NULL; | |
4434 | } | |
4435 | } | |
4436 | ||
65f38f15 AM |
4437 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4438 | ||
4439 | static void | |
fcfa13d2 AM |
4440 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4441 | struct elf_link_hash_entry *dir, | |
4442 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4443 | { |
4444 | struct ppc_link_hash_entry *edir, *eind; | |
4445 | ||
4446 | edir = (struct ppc_link_hash_entry *) dir; | |
4447 | eind = (struct ppc_link_hash_entry *) ind; | |
4448 | ||
c79d6685 AM |
4449 | edir->is_func |= eind->is_func; |
4450 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4451 | edir->tls_mask |= eind->tls_mask; | |
4452 | if (eind->oh != NULL) | |
4453 | edir->oh = ppc_follow_link (eind->oh); | |
4454 | ||
4455 | /* If called to transfer flags for a weakdef during processing | |
4456 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4457 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4458 | if (!(ELIMINATE_COPY_RELOCS | |
4459 | && eind->elf.root.type != bfd_link_hash_indirect | |
4460 | && edir->elf.dynamic_adjusted)) | |
4461 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4462 | ||
4463 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4464 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4465 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4466 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
4467 | ||
411e1bfb | 4468 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4469 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4470 | { |
bbd7ec4a AM |
4471 | if (edir->dyn_relocs != NULL) |
4472 | { | |
6061a67d AM |
4473 | struct elf_dyn_relocs **pp; |
4474 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4475 | |
fcfa13d2 | 4476 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4477 | list. Merge any entries against the same section. */ |
4478 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4479 | { | |
6061a67d | 4480 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4481 | |
4482 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4483 | if (q->sec == p->sec) | |
4484 | { | |
4485 | q->pc_count += p->pc_count; | |
4486 | q->count += p->count; | |
4487 | *pp = p->next; | |
4488 | break; | |
4489 | } | |
4490 | if (q == NULL) | |
4491 | pp = &p->next; | |
4492 | } | |
4493 | *pp = edir->dyn_relocs; | |
4494 | } | |
4495 | ||
65f38f15 AM |
4496 | edir->dyn_relocs = eind->dyn_relocs; |
4497 | eind->dyn_relocs = NULL; | |
4498 | } | |
65f38f15 | 4499 | |
68ba6d40 AM |
4500 | /* If we were called to copy over info for a weak sym, that's all. |
4501 | You might think dyn_relocs need not be copied over; After all, | |
4502 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4503 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4504 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4505 | dyn_relocs in read-only sections, and it does so on what is the | |
4506 | DIR sym here. */ | |
4507 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4508 | return; | |
4509 | ||
81848ca0 AM |
4510 | /* Copy over got entries that we may have already seen to the |
4511 | symbol which just became indirect. */ | |
411e1bfb AM |
4512 | if (eind->elf.got.glist != NULL) |
4513 | { | |
4514 | if (edir->elf.got.glist != NULL) | |
4515 | { | |
4516 | struct got_entry **entp; | |
4517 | struct got_entry *ent; | |
4518 | ||
4519 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4520 | { | |
4521 | struct got_entry *dent; | |
4522 | ||
4523 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4524 | if (dent->addend == ent->addend | |
e717da7e | 4525 | && dent->owner == ent->owner |
411e1bfb AM |
4526 | && dent->tls_type == ent->tls_type) |
4527 | { | |
4528 | dent->got.refcount += ent->got.refcount; | |
4529 | *entp = ent->next; | |
4530 | break; | |
4531 | } | |
4532 | if (dent == NULL) | |
4533 | entp = &ent->next; | |
4534 | } | |
4535 | *entp = edir->elf.got.glist; | |
4536 | } | |
4537 | ||
4538 | edir->elf.got.glist = eind->elf.got.glist; | |
4539 | eind->elf.got.glist = NULL; | |
4540 | } | |
4541 | ||
4542 | /* And plt entries. */ | |
40d16e0b | 4543 | move_plt_plist (eind, edir); |
411e1bfb | 4544 | |
fcfa13d2 | 4545 | if (eind->elf.dynindx != -1) |
411e1bfb | 4546 | { |
fcfa13d2 AM |
4547 | if (edir->elf.dynindx != -1) |
4548 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4549 | edir->elf.dynstr_index); | |
411e1bfb AM |
4550 | edir->elf.dynindx = eind->elf.dynindx; |
4551 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4552 | eind->elf.dynindx = -1; | |
4553 | eind->elf.dynstr_index = 0; | |
4554 | } | |
411e1bfb AM |
4555 | } |
4556 | ||
8387904d AM |
4557 | /* Find the function descriptor hash entry from the given function code |
4558 | hash entry FH. Link the entries via their OH fields. */ | |
4559 | ||
4560 | static struct ppc_link_hash_entry * | |
b31867b6 | 4561 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4562 | { |
4563 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4564 | ||
4565 | if (fdh == NULL) | |
4566 | { | |
4567 | const char *fd_name = fh->elf.root.root.string + 1; | |
4568 | ||
4569 | fdh = (struct ppc_link_hash_entry *) | |
4570 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4571 | if (fdh == NULL) |
4572 | return fdh; | |
4573 | ||
4574 | fdh->is_func_descriptor = 1; | |
4575 | fdh->oh = fh; | |
4576 | fh->is_func = 1; | |
4577 | fh->oh = fdh; | |
8387904d AM |
4578 | } |
4579 | ||
b31867b6 | 4580 | return ppc_follow_link (fdh); |
8387904d AM |
4581 | } |
4582 | ||
bb700d78 AM |
4583 | /* Make a fake function descriptor sym for the code sym FH. */ |
4584 | ||
4585 | static struct ppc_link_hash_entry * | |
4586 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4587 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4588 | { |
4589 | bfd *abfd; | |
4590 | asymbol *newsym; | |
4591 | struct bfd_link_hash_entry *bh; | |
4592 | struct ppc_link_hash_entry *fdh; | |
4593 | ||
4594 | abfd = fh->elf.root.u.undef.abfd; | |
4595 | newsym = bfd_make_empty_symbol (abfd); | |
4596 | newsym->name = fh->elf.root.root.string + 1; | |
4597 | newsym->section = bfd_und_section_ptr; | |
4598 | newsym->value = 0; | |
908b32fc | 4599 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4600 | |
4601 | bh = NULL; | |
4602 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4603 | newsym->flags, newsym->section, | |
4604 | newsym->value, NULL, FALSE, FALSE, | |
4605 | &bh)) | |
4606 | return NULL; | |
4607 | ||
4608 | fdh = (struct ppc_link_hash_entry *) bh; | |
4609 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4610 | fdh->fake = 1; |
4611 | fdh->is_func_descriptor = 1; | |
4612 | fdh->oh = fh; | |
4613 | fh->is_func = 1; | |
4614 | fh->oh = fdh; | |
bb700d78 AM |
4615 | return fdh; |
4616 | } | |
4617 | ||
8387904d AM |
4618 | /* Fix function descriptor symbols defined in .opd sections to be |
4619 | function type. */ | |
555cd476 AM |
4620 | |
4621 | static bfd_boolean | |
c16153ae | 4622 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4623 | struct bfd_link_info *info, |
555cd476 | 4624 | Elf_Internal_Sym *isym, |
b3fac117 | 4625 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4626 | flagword *flags ATTRIBUTE_UNUSED, |
4627 | asection **sec, | |
4628 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4629 | { | |
f64b2e8d NC |
4630 | if ((ibfd->flags & DYNAMIC) == 0 |
4631 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4632 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4633 | ||
e054468f | 4634 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4635 | { |
4636 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4637 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4638 | } |
e054468f AM |
4639 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4640 | ; | |
4641 | else if (*sec != NULL | |
70cc837d | 4642 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4643 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4644 | |
555cd476 AM |
4645 | return TRUE; |
4646 | } | |
4647 | ||
8387904d | 4648 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4649 | inclusion of a new ABI object archive that defines "bar". |
4650 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4651 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4652 | |
4653 | static struct elf_link_hash_entry * | |
4654 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4655 | struct bfd_link_info *info, | |
4656 | const char *name) | |
4657 | { | |
4658 | struct elf_link_hash_entry *h; | |
4659 | char *dot_name; | |
4660 | size_t len; | |
4661 | ||
4662 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4663 | if (h != NULL |
4664 | /* Don't return this sym if it is a fake function descriptor | |
4665 | created by add_symbol_adjust. */ | |
4666 | && !(h->root.type == bfd_link_hash_undefweak | |
4667 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4668 | return h; |
4669 | ||
4670 | if (name[0] == '.') | |
4671 | return h; | |
4672 | ||
4673 | len = strlen (name); | |
4674 | dot_name = bfd_alloc (abfd, len + 2); | |
4675 | if (dot_name == NULL) | |
4676 | return (struct elf_link_hash_entry *) 0 - 1; | |
4677 | dot_name[0] = '.'; | |
4678 | memcpy (dot_name + 1, name, len + 1); | |
4679 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4680 | bfd_release (abfd, dot_name); | |
4681 | return h; | |
4682 | } | |
4683 | ||
4684 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4685 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4686 | are made weak. This stops later archive searches from including an | |
4687 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4688 | prevents the linker complaining about undefined symbols. |
4689 | We also check and correct mismatched symbol visibility here. The | |
4690 | most restrictive visibility of the function descriptor and the | |
4691 | function entry symbol is used. */ | |
8387904d AM |
4692 | |
4693 | static bfd_boolean | |
b3fac117 | 4694 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4695 | { |
8387904d AM |
4696 | struct ppc_link_hash_table *htab; |
4697 | struct ppc_link_hash_entry *fdh; | |
4698 | ||
b3fac117 | 4699 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4700 | return TRUE; |
4701 | ||
b3fac117 AM |
4702 | if (eh->elf.root.type == bfd_link_hash_warning) |
4703 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4704 | |
b3fac117 AM |
4705 | if (eh->elf.root.root.string[0] != '.') |
4706 | abort (); | |
8387904d | 4707 | |
b3fac117 | 4708 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4709 | if (htab == NULL) |
4710 | return FALSE; | |
4711 | ||
b31867b6 AM |
4712 | fdh = lookup_fdh (eh, htab); |
4713 | if (fdh == NULL) | |
4714 | { | |
4715 | if (!info->relocatable | |
4716 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4717 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4718 | && eh->elf.ref_regular) | |
4719 | { | |
4720 | /* Make an undefweak function descriptor sym, which is enough to | |
4721 | pull in an --as-needed shared lib, but won't cause link | |
4722 | errors. Archives are handled elsewhere. */ | |
4723 | fdh = make_fdh (info, eh); | |
4724 | if (fdh == NULL) | |
4725 | return FALSE; | |
4726 | fdh->elf.ref_regular = 1; | |
4727 | } | |
bb700d78 | 4728 | } |
b31867b6 | 4729 | else |
8387904d | 4730 | { |
35b0ce59 AM |
4731 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4732 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4733 | if (entry_vis < descr_vis) | |
4734 | fdh->elf.other += entry_vis - descr_vis; | |
4735 | else if (entry_vis > descr_vis) | |
4736 | eh->elf.other += descr_vis - entry_vis; | |
4737 | ||
e87d886e AM |
4738 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4739 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4740 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4741 | { |
4742 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4743 | eh->was_undefined = 1; | |
4744 | htab->twiddled_syms = 1; | |
4745 | } | |
8387904d | 4746 | } |
99877b66 | 4747 | |
8387904d AM |
4748 | return TRUE; |
4749 | } | |
4750 | ||
b3fac117 AM |
4751 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4752 | ||
8387904d | 4753 | static bfd_boolean |
7d9616d7 | 4754 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4755 | { |
99877b66 | 4756 | struct ppc_link_hash_table *htab; |
b3fac117 | 4757 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4758 | |
0c8d6e5c | 4759 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4760 | return TRUE; |
4dfe6ac6 NC |
4761 | htab = ppc_hash_table (info); |
4762 | if (htab == NULL) | |
4763 | return FALSE; | |
35b0ce59 | 4764 | |
0c8d6e5c | 4765 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4766 | { |
4767 | p = &htab->dot_syms; | |
4768 | while ((eh = *p) != NULL) | |
4769 | { | |
4770 | *p = NULL; | |
1c865ab2 AM |
4771 | if (&eh->elf == htab->elf.hgot) |
4772 | ; | |
4773 | else if (htab->elf.hgot == NULL | |
4774 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4775 | htab->elf.hgot = &eh->elf; | |
4776 | else if (!add_symbol_adjust (eh, info)) | |
b3fac117 AM |
4777 | return FALSE; |
4778 | p = &eh->u.next_dot_sym; | |
4779 | } | |
4780 | } | |
4781 | ||
4782 | /* Clear the list for non-ppc64 input files. */ | |
4783 | p = &htab->dot_syms; | |
4784 | while ((eh = *p) != NULL) | |
4785 | { | |
4786 | *p = NULL; | |
4787 | p = &eh->u.next_dot_sym; | |
4788 | } | |
99877b66 AM |
4789 | |
4790 | /* We need to fix the undefs list for any syms we have twiddled to | |
4791 | undef_weak. */ | |
4792 | if (htab->twiddled_syms) | |
4793 | { | |
77cfaee6 | 4794 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4795 | htab->twiddled_syms = 0; |
4796 | } | |
b3fac117 | 4797 | return TRUE; |
8387904d AM |
4798 | } |
4799 | ||
97fed1c9 JJ |
4800 | /* Undo hash table changes when an --as-needed input file is determined |
4801 | not to be needed. */ | |
4802 | ||
4803 | static bfd_boolean | |
4804 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4805 | struct bfd_link_info *info) | |
4806 | { | |
4dfe6ac6 NC |
4807 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
4808 | ||
4809 | if (htab == NULL) | |
4810 | return FALSE; | |
4811 | ||
4812 | htab->dot_syms = NULL; | |
97fed1c9 JJ |
4813 | return TRUE; |
4814 | } | |
4815 | ||
aa374f67 AM |
4816 | /* If --just-symbols against a final linked binary, then assume we need |
4817 | toc adjusting stubs when calling functions defined there. */ | |
4818 | ||
4819 | static void | |
4820 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4821 | { | |
4822 | if ((sec->flags & SEC_CODE) != 0 | |
4823 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4824 | && is_ppc64_elf (sec->owner)) | |
4825 | { | |
4826 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
4827 | if (got != NULL | |
4828 | && got->size >= elf_backend_got_header_size | |
4829 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
4830 | sec->has_toc_reloc = 1; | |
4831 | } | |
4832 | _bfd_elf_link_just_syms (sec, info); | |
4833 | } | |
4834 | ||
e054468f | 4835 | static struct plt_entry ** |
4ce794b7 AM |
4836 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4837 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4838 | { |
4839 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4840 | struct plt_entry **local_plt; |
f961d9dd | 4841 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4842 | |
4843 | if (local_got_ents == NULL) | |
4844 | { | |
4845 | bfd_size_type size = symtab_hdr->sh_info; | |
4846 | ||
e054468f AM |
4847 | size *= (sizeof (*local_got_ents) |
4848 | + sizeof (*local_plt) | |
4849 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4850 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4851 | if (local_got_ents == NULL) |
e054468f | 4852 | return NULL; |
411e1bfb AM |
4853 | elf_local_got_ents (abfd) = local_got_ents; |
4854 | } | |
4855 | ||
e054468f | 4856 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4857 | { |
4858 | struct got_entry *ent; | |
4859 | ||
4860 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4861 | if (ent->addend == r_addend |
4862 | && ent->owner == abfd | |
4863 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4864 | break; |
4865 | if (ent == NULL) | |
4866 | { | |
4867 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4868 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4869 | if (ent == NULL) |
4870 | return FALSE; | |
4871 | ent->next = local_got_ents[r_symndx]; | |
4872 | ent->addend = r_addend; | |
e717da7e | 4873 | ent->owner = abfd; |
411e1bfb | 4874 | ent->tls_type = tls_type; |
927be08e | 4875 | ent->is_indirect = FALSE; |
411e1bfb AM |
4876 | ent->got.refcount = 0; |
4877 | local_got_ents[r_symndx] = ent; | |
4878 | } | |
4879 | ent->got.refcount += 1; | |
4880 | } | |
4881 | ||
e054468f | 4882 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4883 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 4884 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4885 | |
4886 | return local_plt + r_symndx; | |
65f38f15 AM |
4887 | } |
4888 | ||
411e1bfb | 4889 | static bfd_boolean |
e054468f | 4890 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4891 | { |
411e1bfb | 4892 | struct plt_entry *ent; |
1e2f5b6e | 4893 | |
e054468f | 4894 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4895 | if (ent->addend == addend) |
4896 | break; | |
4897 | if (ent == NULL) | |
1e2f5b6e | 4898 | { |
411e1bfb | 4899 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4900 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4901 | if (ent == NULL) |
4902 | return FALSE; | |
e054468f | 4903 | ent->next = *plist; |
411e1bfb AM |
4904 | ent->addend = addend; |
4905 | ent->plt.refcount = 0; | |
e054468f | 4906 | *plist = ent; |
1e2f5b6e | 4907 | } |
411e1bfb | 4908 | ent->plt.refcount += 1; |
b34976b6 | 4909 | return TRUE; |
1e2f5b6e AM |
4910 | } |
4911 | ||
e054468f AM |
4912 | static bfd_boolean |
4913 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4914 | { | |
4915 | return (r_type == R_PPC64_REL24 | |
4916 | || r_type == R_PPC64_REL14 | |
4917 | || r_type == R_PPC64_REL14_BRTAKEN | |
4918 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4919 | || r_type == R_PPC64_ADDR24 | |
4920 | || r_type == R_PPC64_ADDR14 | |
4921 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4922 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4923 | } | |
4924 | ||
5bd4f169 | 4925 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4926 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4927 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4928 | |
b34976b6 | 4929 | static bfd_boolean |
4ce794b7 AM |
4930 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4931 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4932 | { |
65f38f15 | 4933 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4934 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4935 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4936 | const Elf_Internal_Rela *rel; |
4937 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4938 | asection *sreloc; |
1e2f5b6e | 4939 | asection **opd_sym_map; |
3a71aa26 | 4940 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4941 | |
1049f94e | 4942 | if (info->relocatable) |
b34976b6 | 4943 | return TRUE; |
5bd4f169 | 4944 | |
680a3378 AM |
4945 | /* Don't do anything special with non-loaded, non-alloced sections. |
4946 | In particular, any relocs in such sections should not affect GOT | |
4947 | and PLT reference counting (ie. we don't allow them to create GOT | |
4948 | or PLT entries), there's no possibility or desire to optimize TLS | |
4949 | relocs, and there's not much point in propagating relocs to shared | |
4950 | libs that the dynamic linker won't relocate. */ | |
4951 | if ((sec->flags & SEC_ALLOC) == 0) | |
4952 | return TRUE; | |
4953 | ||
0c8d6e5c | 4954 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4955 | |
65f38f15 | 4956 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4957 | if (htab == NULL) |
4958 | return FALSE; | |
4959 | ||
3a71aa26 AM |
4960 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4961 | FALSE, FALSE, TRUE); | |
4962 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4963 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4964 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4965 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4966 | sreloc = NULL; |
1e2f5b6e | 4967 | opd_sym_map = NULL; |
70cc837d | 4968 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
4969 | { |
4970 | /* Garbage collection needs some extra help with .opd sections. | |
4971 | We don't want to necessarily keep everything referenced by | |
4972 | relocs in .opd, as that would keep all functions. Instead, | |
4973 | if we reference an .opd symbol (a function descriptor), we | |
4974 | want to keep the function code symbol's section. This is | |
4975 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4976 | information about the associated function section. */ |
1e2f5b6e AM |
4977 | bfd_size_type amt; |
4978 | ||
74f0fb50 | 4979 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4980 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4981 | if (opd_sym_map == NULL) |
b34976b6 | 4982 | return FALSE; |
74f0fb50 | 4983 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4984 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4985 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4986 | } |
5bd4f169 AM |
4987 | |
4988 | rel_end = relocs + sec->reloc_count; | |
4989 | for (rel = relocs; rel < rel_end; rel++) | |
4990 | { | |
4991 | unsigned long r_symndx; | |
4992 | struct elf_link_hash_entry *h; | |
04c9666a | 4993 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4994 | int tls_type; |
7c8fe5c4 | 4995 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4996 | struct plt_entry **ifunc; |
5bd4f169 AM |
4997 | |
4998 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4999 | if (r_symndx < symtab_hdr->sh_info) | |
5000 | h = NULL; | |
5001 | else | |
973a3492 L |
5002 | { |
5003 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5004 | h = elf_follow_link (h); |
81fbe831 AM |
5005 | |
5006 | /* PR15323, ref flags aren't set for references in the same | |
5007 | object. */ | |
5008 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5009 | |
5010 | if (h == htab->elf.hgot) | |
5011 | sec->has_toc_reloc = 1; | |
973a3492 | 5012 | } |
5bd4f169 | 5013 | |
727fc41e | 5014 | tls_type = 0; |
e054468f | 5015 | ifunc = NULL; |
25f23106 AM |
5016 | if (h != NULL) |
5017 | { | |
5018 | if (h->type == STT_GNU_IFUNC) | |
5019 | { | |
5020 | h->needs_plt = 1; | |
5021 | ifunc = &h->plt.plist; | |
5022 | } | |
5023 | } | |
5024 | else | |
5025 | { | |
5026 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5027 | abfd, r_symndx); | |
5028 | if (isym == NULL) | |
5029 | return FALSE; | |
5030 | ||
5031 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5032 | { | |
5033 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5034 | rel->r_addend, PLT_IFUNC); | |
5035 | if (ifunc == NULL) | |
5036 | return FALSE; | |
5037 | } | |
5038 | } | |
4ce794b7 | 5039 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5040 | if (is_branch_reloc (r_type)) |
5041 | { | |
5042 | if (h != NULL && (h == tga || h == dottga)) | |
5043 | { | |
5044 | if (rel != relocs | |
5045 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5046 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5047 | /* We have a new-style __tls_get_addr call with a marker | |
5048 | reloc. */ | |
5049 | ; | |
5050 | else | |
5051 | /* Mark this section as having an old-style call. */ | |
5052 | sec->has_tls_get_addr_call = 1; | |
5053 | } | |
727fc41e | 5054 | |
e054468f | 5055 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5056 | if (ifunc != NULL |
5057 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5058 | return FALSE; | |
5059 | } | |
727fc41e | 5060 | |
a33d1f77 | 5061 | switch (r_type) |
5bd4f169 | 5062 | { |
727fc41e AM |
5063 | case R_PPC64_TLSGD: |
5064 | case R_PPC64_TLSLD: | |
5065 | /* These special tls relocs tie a call to __tls_get_addr with | |
5066 | its parameter symbol. */ | |
5067 | break; | |
5068 | ||
411e1bfb AM |
5069 | case R_PPC64_GOT_TLSLD16: |
5070 | case R_PPC64_GOT_TLSLD16_LO: | |
5071 | case R_PPC64_GOT_TLSLD16_HI: | |
5072 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5073 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5074 | goto dogottls; |
5075 | ||
5076 | case R_PPC64_GOT_TLSGD16: | |
5077 | case R_PPC64_GOT_TLSGD16_LO: | |
5078 | case R_PPC64_GOT_TLSGD16_HI: | |
5079 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5080 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5081 | goto dogottls; |
5082 | ||
5083 | case R_PPC64_GOT_TPREL16_DS: | |
5084 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5085 | case R_PPC64_GOT_TPREL16_HI: | |
5086 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5087 | if (!info->executable) |
411e1bfb AM |
5088 | info->flags |= DF_STATIC_TLS; |
5089 | tls_type = TLS_TLS | TLS_TPREL; | |
5090 | goto dogottls; | |
5091 | ||
5092 | case R_PPC64_GOT_DTPREL16_DS: | |
5093 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5094 | case R_PPC64_GOT_DTPREL16_HI: | |
5095 | case R_PPC64_GOT_DTPREL16_HA: | |
5096 | tls_type = TLS_TLS | TLS_DTPREL; | |
5097 | dogottls: | |
5098 | sec->has_tls_reloc = 1; | |
5099 | /* Fall thru */ | |
5100 | ||
5bd4f169 | 5101 | case R_PPC64_GOT16: |
5bd4f169 | 5102 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5103 | case R_PPC64_GOT16_HA: |
5104 | case R_PPC64_GOT16_HI: | |
5105 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5106 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5107 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5108 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5109 | if (r_type == R_PPC64_GOT_TLSLD16 |
5110 | || r_type == R_PPC64_GOT_TLSGD16 | |
5111 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5112 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5113 | || r_type == R_PPC64_GOT16 | |
5114 | || r_type == R_PPC64_GOT16_DS) | |
5115 | { | |
5116 | htab->do_multi_toc = 1; | |
d77c8a4b | 5117 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5118 | } |
5119 | ||
e717da7e AM |
5120 | if (ppc64_elf_tdata (abfd)->got == NULL |
5121 | && !create_got_section (abfd, info)) | |
b34976b6 | 5122 | return FALSE; |
5bd4f169 AM |
5123 | |
5124 | if (h != NULL) | |
5125 | { | |
411e1bfb AM |
5126 | struct ppc_link_hash_entry *eh; |
5127 | struct got_entry *ent; | |
65f38f15 | 5128 | |
411e1bfb AM |
5129 | eh = (struct ppc_link_hash_entry *) h; |
5130 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5131 | if (ent->addend == rel->r_addend | |
e717da7e | 5132 | && ent->owner == abfd |
411e1bfb AM |
5133 | && ent->tls_type == tls_type) |
5134 | break; | |
5135 | if (ent == NULL) | |
5bd4f169 | 5136 | { |
411e1bfb | 5137 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5138 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5139 | if (ent == NULL) |
b34976b6 | 5140 | return FALSE; |
411e1bfb AM |
5141 | ent->next = eh->elf.got.glist; |
5142 | ent->addend = rel->r_addend; | |
e717da7e | 5143 | ent->owner = abfd; |
411e1bfb | 5144 | ent->tls_type = tls_type; |
927be08e | 5145 | ent->is_indirect = FALSE; |
411e1bfb AM |
5146 | ent->got.refcount = 0; |
5147 | eh->elf.got.glist = ent; | |
5bd4f169 | 5148 | } |
411e1bfb | 5149 | ent->got.refcount += 1; |
e7b938ca | 5150 | eh->tls_mask |= tls_type; |
5bd4f169 | 5151 | } |
411e1bfb AM |
5152 | else |
5153 | /* This is a global offset table entry for a local symbol. */ | |
5154 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5155 | rel->r_addend, tls_type)) | |
5156 | return FALSE; | |
5bd4f169 AM |
5157 | break; |
5158 | ||
5bd4f169 | 5159 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5160 | case R_PPC64_PLT16_HI: |
5161 | case R_PPC64_PLT16_LO: | |
5162 | case R_PPC64_PLT32: | |
5163 | case R_PPC64_PLT64: | |
5bd4f169 | 5164 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5165 | actually build the entry in adjust_dynamic_symbol, |
5166 | because this might be a case of linking PIC code without | |
5167 | linking in any dynamic objects, in which case we don't | |
5168 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5169 | if (h == NULL) |
5170 | { | |
5171 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5172 | table entry for a local symbol. */ |
5bd4f169 | 5173 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5174 | return FALSE; |
5bd4f169 | 5175 | } |
411e1bfb | 5176 | else |
e054468f AM |
5177 | { |
5178 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5179 | return FALSE; | |
5180 | h->needs_plt = 1; | |
5181 | if (h->root.root.string[0] == '.' | |
5182 | && h->root.root.string[1] != '\0') | |
5183 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5184 | } | |
5bd4f169 AM |
5185 | break; |
5186 | ||
5187 | /* The following relocations don't need to propagate the | |
5188 | relocation if linking a shared object since they are | |
5189 | section relative. */ | |
5190 | case R_PPC64_SECTOFF: | |
5191 | case R_PPC64_SECTOFF_LO: | |
5192 | case R_PPC64_SECTOFF_HI: | |
5193 | case R_PPC64_SECTOFF_HA: | |
5194 | case R_PPC64_SECTOFF_DS: | |
5195 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5196 | case R_PPC64_DTPREL16: |
5197 | case R_PPC64_DTPREL16_LO: | |
5198 | case R_PPC64_DTPREL16_HI: | |
5199 | case R_PPC64_DTPREL16_HA: | |
5200 | case R_PPC64_DTPREL16_DS: | |
5201 | case R_PPC64_DTPREL16_LO_DS: | |
5202 | case R_PPC64_DTPREL16_HIGHER: | |
5203 | case R_PPC64_DTPREL16_HIGHERA: | |
5204 | case R_PPC64_DTPREL16_HIGHEST: | |
5205 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5206 | break; |
5207 | ||
ad8e1ba5 | 5208 | /* Nor do these. */ |
25f23106 AM |
5209 | case R_PPC64_REL16: |
5210 | case R_PPC64_REL16_LO: | |
5211 | case R_PPC64_REL16_HI: | |
5212 | case R_PPC64_REL16_HA: | |
5213 | break; | |
5214 | ||
ad8e1ba5 | 5215 | case R_PPC64_TOC16: |
33c0ec9d AM |
5216 | case R_PPC64_TOC16_DS: |
5217 | htab->do_multi_toc = 1; | |
d77c8a4b | 5218 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5219 | case R_PPC64_TOC16_LO: |
5220 | case R_PPC64_TOC16_HI: | |
5221 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5222 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5223 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5224 | break; |
5225 | ||
5bd4f169 AM |
5226 | /* This relocation describes the C++ object vtable hierarchy. |
5227 | Reconstruct it for later use during GC. */ | |
5228 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5229 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5230 | return FALSE; |
5bd4f169 AM |
5231 | break; |
5232 | ||
5233 | /* This relocation describes which C++ vtable entries are actually | |
5234 | used. Record for later use during GC. */ | |
5235 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5236 | BFD_ASSERT (h != NULL); |
5237 | if (h != NULL | |
5238 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5239 | return FALSE; |
5bd4f169 AM |
5240 | break; |
5241 | ||
721956f4 AM |
5242 | case R_PPC64_REL14: |
5243 | case R_PPC64_REL14_BRTAKEN: | |
5244 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5245 | { |
5246 | asection *dest = NULL; | |
5247 | ||
5248 | /* Heuristic: If jumping outside our section, chances are | |
5249 | we are going to need a stub. */ | |
5250 | if (h != NULL) | |
5251 | { | |
5252 | /* If the sym is weak it may be overridden later, so | |
5253 | don't assume we know where a weak sym lives. */ | |
5254 | if (h->root.type == bfd_link_hash_defined) | |
5255 | dest = h->root.u.def.section; | |
5256 | } | |
5257 | else | |
87d72d41 AM |
5258 | { |
5259 | Elf_Internal_Sym *isym; | |
5260 | ||
5261 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5262 | abfd, r_symndx); | |
5263 | if (isym == NULL) | |
5264 | return FALSE; | |
5265 | ||
5266 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5267 | } | |
5268 | ||
220c76dd | 5269 | if (dest != sec) |
7c8fe5c4 | 5270 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5271 | } |
721956f4 AM |
5272 | /* Fall through. */ |
5273 | ||
5d1634d7 | 5274 | case R_PPC64_REL24: |
e054468f | 5275 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5276 | { |
5277 | /* We may need a .plt entry if the function this reloc | |
5278 | refers to is in a shared lib. */ | |
e054468f | 5279 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5280 | return FALSE; |
e054468f AM |
5281 | h->needs_plt = 1; |
5282 | if (h->root.root.string[0] == '.' | |
5283 | && h->root.root.string[1] != '\0') | |
5284 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5285 | if (h == tga || h == dottga) |
411e1bfb | 5286 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5287 | } |
5288 | break; | |
5289 | ||
5290 | case R_PPC64_TPREL64: | |
5291 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5292 | if (!info->executable) |
411e1bfb AM |
5293 | info->flags |= DF_STATIC_TLS; |
5294 | goto dotlstoc; | |
5295 | ||
5296 | case R_PPC64_DTPMOD64: | |
5297 | if (rel + 1 < rel_end | |
5298 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5299 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5300 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5301 | else |
951fd09b | 5302 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5303 | goto dotlstoc; |
5304 | ||
5305 | case R_PPC64_DTPREL64: | |
5306 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5307 | if (rel != relocs | |
5308 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5309 | && rel[-1].r_offset == rel->r_offset - 8) | |
5310 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5311 | Don't mark with TLS_DTPREL. */ | |
5312 | goto dodyn; | |
5313 | ||
5314 | dotlstoc: | |
5315 | sec->has_tls_reloc = 1; | |
5316 | if (h != NULL) | |
5317 | { | |
5318 | struct ppc_link_hash_entry *eh; | |
5319 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5320 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5321 | } |
5322 | else | |
5323 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5324 | rel->r_addend, tls_type)) | |
5325 | return FALSE; | |
5326 | ||
7c8fe5c4 AM |
5327 | ppc64_sec = ppc64_elf_section_data (sec); |
5328 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5329 | { |
3a71aa26 AM |
5330 | bfd_size_type amt; |
5331 | ||
e7b938ca | 5332 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5333 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5334 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5335 | if (ppc64_sec->u.toc.symndx == NULL) | |
5336 | return FALSE; | |
5337 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5338 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5339 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5340 | return FALSE; |
7c8fe5c4 AM |
5341 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5342 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5343 | } |
5344 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5345 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5346 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5347 | |
5348 | /* Mark the second slot of a GD or LD entry. | |
5349 | -1 to indicate GD and -2 to indicate LD. */ | |
5350 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5351 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5352 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5353 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5354 | goto dodyn; |
5355 | ||
5356 | case R_PPC64_TPREL16: | |
5357 | case R_PPC64_TPREL16_LO: | |
5358 | case R_PPC64_TPREL16_HI: | |
5359 | case R_PPC64_TPREL16_HA: | |
5360 | case R_PPC64_TPREL16_DS: | |
5361 | case R_PPC64_TPREL16_LO_DS: | |
5362 | case R_PPC64_TPREL16_HIGHER: | |
5363 | case R_PPC64_TPREL16_HIGHERA: | |
5364 | case R_PPC64_TPREL16_HIGHEST: | |
5365 | case R_PPC64_TPREL16_HIGHESTA: | |
5366 | if (info->shared) | |
5367 | { | |
1d483afe AM |
5368 | if (!info->executable) |
5369 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5370 | goto dodyn; |
5d1634d7 AM |
5371 | } |
5372 | break; | |
5373 | ||
e86ce104 | 5374 | case R_PPC64_ADDR64: |
1e2f5b6e | 5375 | if (opd_sym_map != NULL |
1e2f5b6e | 5376 | && rel + 1 < rel_end |
4ce794b7 | 5377 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5378 | { |
8387904d AM |
5379 | if (h != NULL) |
5380 | { | |
5381 | if (h->root.root.string[0] == '.' | |
5382 | && h->root.root.string[1] != 0 | |
b31867b6 | 5383 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5384 | ; |
5385 | else | |
5386 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5387 | } | |
5388 | else | |
5389 | { | |
5390 | asection *s; | |
87d72d41 | 5391 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5392 | |
87d72d41 AM |
5393 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5394 | abfd, r_symndx); | |
5395 | if (isym == NULL) | |
8387904d | 5396 | return FALSE; |
87d72d41 AM |
5397 | |
5398 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5399 | if (s != NULL && s != sec) | |
3f764659 | 5400 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5401 | } |
1e2f5b6e | 5402 | } |
e86ce104 AM |
5403 | /* Fall through. */ |
5404 | ||
04c9666a | 5405 | case R_PPC64_REL30: |
5bd4f169 | 5406 | case R_PPC64_REL32: |
04c9666a | 5407 | case R_PPC64_REL64: |
65f38f15 AM |
5408 | case R_PPC64_ADDR14: |
5409 | case R_PPC64_ADDR14_BRNTAKEN: | |
5410 | case R_PPC64_ADDR14_BRTAKEN: | |
5411 | case R_PPC64_ADDR16: | |
5412 | case R_PPC64_ADDR16_DS: | |
5413 | case R_PPC64_ADDR16_HA: | |
5414 | case R_PPC64_ADDR16_HI: | |
5415 | case R_PPC64_ADDR16_HIGHER: | |
5416 | case R_PPC64_ADDR16_HIGHERA: | |
5417 | case R_PPC64_ADDR16_HIGHEST: | |
5418 | case R_PPC64_ADDR16_HIGHESTA: | |
5419 | case R_PPC64_ADDR16_LO: | |
5420 | case R_PPC64_ADDR16_LO_DS: | |
5421 | case R_PPC64_ADDR24: | |
65f38f15 | 5422 | case R_PPC64_ADDR32: |
65f38f15 AM |
5423 | case R_PPC64_UADDR16: |
5424 | case R_PPC64_UADDR32: | |
5425 | case R_PPC64_UADDR64: | |
5bd4f169 | 5426 | case R_PPC64_TOC: |
81848ca0 AM |
5427 | if (h != NULL && !info->shared) |
5428 | /* We may need a copy reloc. */ | |
f5385ebf | 5429 | h->non_got_ref = 1; |
81848ca0 | 5430 | |
41bd81ab | 5431 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5432 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5433 | break; |
e86ce104 | 5434 | |
65f38f15 AM |
5435 | /* If we are creating a shared library, and this is a reloc |
5436 | against a global symbol, or a non PC relative reloc | |
5437 | against a local symbol, then we need to copy the reloc | |
5438 | into the shared library. However, if we are linking with | |
5439 | -Bsymbolic, we do not need to copy a reloc against a | |
5440 | global symbol which is defined in an object we are | |
5441 | including in the link (i.e., DEF_REGULAR is set). At | |
5442 | this point we have not seen all the input files, so it is | |
5443 | possible that DEF_REGULAR is not set now but will be set | |
5444 | later (it is never cleared). In case of a weak definition, | |
5445 | DEF_REGULAR may be cleared later by a strong definition in | |
5446 | a shared library. We account for that possibility below by | |
f4656909 | 5447 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5448 | table entry. A similar situation occurs when creating |
5449 | shared libraries and symbol visibility changes render the | |
5450 | symbol local. | |
5451 | ||
5452 | If on the other hand, we are creating an executable, we | |
5453 | may need to keep relocations for symbols satisfied by a | |
5454 | dynamic library if we manage to avoid copy relocs for the | |
5455 | symbol. */ | |
411e1bfb | 5456 | dodyn: |
65f38f15 | 5457 | if ((info->shared |
1d483afe | 5458 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5459 | || (h != NULL |
198f1157 | 5460 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5461 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5462 | || !h->def_regular)))) |
f4656909 AM |
5463 | || (ELIMINATE_COPY_RELOCS |
5464 | && !info->shared | |
65f38f15 AM |
5465 | && h != NULL |
5466 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5467 | || !h->def_regular)) |
5468 | || (!info->shared | |
5469 | && ifunc != NULL)) | |
5bd4f169 | 5470 | { |
65f38f15 AM |
5471 | /* We must copy these reloc types into the output file. |
5472 | Create a reloc section in dynobj and make room for | |
5473 | this reloc. */ | |
5bd4f169 AM |
5474 | if (sreloc == NULL) |
5475 | { | |
83bac4b0 NC |
5476 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5477 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5478 | |
5bd4f169 | 5479 | if (sreloc == NULL) |
83bac4b0 | 5480 | return FALSE; |
5bd4f169 AM |
5481 | } |
5482 | ||
65f38f15 AM |
5483 | /* If this is a global symbol, we count the number of |
5484 | relocations we need for this symbol. */ | |
5485 | if (h != NULL) | |
5486 | { | |
19e08130 AM |
5487 | struct elf_dyn_relocs *p; |
5488 | struct elf_dyn_relocs **head; | |
5489 | ||
ec338859 | 5490 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5491 | p = *head; |
5492 | if (p == NULL || p->sec != sec) | |
5493 | { | |
5494 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5495 | if (p == NULL) | |
5496 | return FALSE; | |
5497 | p->next = *head; | |
5498 | *head = p; | |
5499 | p->sec = sec; | |
5500 | p->count = 0; | |
5501 | p->pc_count = 0; | |
5502 | } | |
5503 | p->count += 1; | |
5504 | if (!must_be_dyn_reloc (info, r_type)) | |
5505 | p->pc_count += 1; | |
65f38f15 AM |
5506 | } |
5507 | else | |
5508 | { | |
ec338859 AM |
5509 | /* Track dynamic relocs needed for local syms too. |
5510 | We really need local syms available to do this | |
5511 | easily. Oh well. */ | |
19e08130 AM |
5512 | struct ppc_dyn_relocs *p; |
5513 | struct ppc_dyn_relocs **head; | |
5514 | bfd_boolean is_ifunc; | |
ec338859 | 5515 | asection *s; |
6edfbbad | 5516 | void *vpp; |
87d72d41 | 5517 | Elf_Internal_Sym *isym; |
6edfbbad | 5518 | |
87d72d41 AM |
5519 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5520 | abfd, r_symndx); | |
5521 | if (isym == NULL) | |
b34976b6 | 5522 | return FALSE; |
ec338859 | 5523 | |
87d72d41 AM |
5524 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5525 | if (s == NULL) | |
5526 | s = sec; | |
5527 | ||
6edfbbad | 5528 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5529 | head = (struct ppc_dyn_relocs **) vpp; |
5530 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5531 | p = *head; | |
5532 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5533 | p = p->next; | |
5534 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5535 | { | |
5536 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5537 | if (p == NULL) | |
5538 | return FALSE; | |
5539 | p->next = *head; | |
5540 | *head = p; | |
5541 | p->sec = sec; | |
5542 | p->ifunc = is_ifunc; | |
5543 | p->count = 0; | |
5544 | } | |
5545 | p->count += 1; | |
ec338859 | 5546 | } |
65f38f15 | 5547 | } |
5bd4f169 | 5548 | break; |
65f38f15 AM |
5549 | |
5550 | default: | |
96e0dda4 | 5551 | break; |
5bd4f169 AM |
5552 | } |
5553 | } | |
5554 | ||
b34976b6 | 5555 | return TRUE; |
5bd4f169 AM |
5556 | } |
5557 | ||
8387904d AM |
5558 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5559 | of the code entry point, and its section. */ | |
5560 | ||
5561 | static bfd_vma | |
5562 | opd_entry_value (asection *opd_sec, | |
5563 | bfd_vma offset, | |
5564 | asection **code_sec, | |
aef36ac1 AM |
5565 | bfd_vma *code_off, |
5566 | bfd_boolean in_code_sec) | |
8387904d AM |
5567 | { |
5568 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5569 | Elf_Internal_Rela *relocs; |
8387904d | 5570 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5571 | bfd_vma val; |
8387904d | 5572 | |
9f296da3 AM |
5573 | /* No relocs implies we are linking a --just-symbols object, or looking |
5574 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5575 | if (opd_sec->reloc_count == 0) |
5576 | { | |
aef36ac1 | 5577 | char buf[8]; |
3b36f7e6 | 5578 | |
aef36ac1 AM |
5579 | if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8)) |
5580 | return (bfd_vma) -1; | |
ee1e4ede | 5581 | |
aef36ac1 AM |
5582 | val = bfd_get_64 (opd_bfd, buf); |
5583 | if (code_sec != NULL) | |
5584 | { | |
5585 | asection *sec, *likely = NULL; | |
ee1e4ede | 5586 | |
aef36ac1 | 5587 | if (in_code_sec) |
4b85d634 | 5588 | { |
aef36ac1 AM |
5589 | sec = *code_sec; |
5590 | if (sec->vma <= val | |
5591 | && val < sec->vma + sec->size) | |
5592 | likely = sec; | |
5593 | else | |
5594 | val = -1; | |
5595 | } | |
5596 | else | |
5597 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5598 | if (sec->vma <= val | |
5599 | && (sec->flags & SEC_LOAD) != 0 | |
5600 | && (sec->flags & SEC_ALLOC) != 0) | |
5601 | likely = sec; | |
5602 | if (likely != NULL) | |
5603 | { | |
5604 | *code_sec = likely; | |
5605 | if (code_off != NULL) | |
5606 | *code_off = val - likely->vma; | |
4b85d634 AM |
5607 | } |
5608 | } | |
aef36ac1 | 5609 | return val; |
4b85d634 AM |
5610 | } |
5611 | ||
0c8d6e5c | 5612 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5613 | |
8860955f AM |
5614 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5615 | if (relocs == NULL) | |
5616 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5617 | |
8387904d | 5618 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5619 | lo = relocs; |
8387904d AM |
5620 | BFD_ASSERT (lo != NULL); |
5621 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5622 | val = (bfd_vma) -1; |
8387904d AM |
5623 | while (lo < hi) |
5624 | { | |
5625 | look = lo + (hi - lo) / 2; | |
5626 | if (look->r_offset < offset) | |
5627 | lo = look + 1; | |
5628 | else if (look->r_offset > offset) | |
5629 | hi = look; | |
5630 | else | |
5631 | { | |
0ffa91dd NC |
5632 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5633 | ||
8387904d AM |
5634 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5635 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5636 | { | |
5637 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5638 | asection *sec; |
5639 | ||
62599110 AM |
5640 | if (symndx < symtab_hdr->sh_info |
5641 | || elf_sym_hashes (opd_bfd) == NULL) | |
8387904d AM |
5642 | { |
5643 | Elf_Internal_Sym *sym; | |
5644 | ||
5645 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5646 | if (sym == NULL) | |
5647 | { | |
62599110 AM |
5648 | size_t symcnt = symtab_hdr->sh_info; |
5649 | if (elf_sym_hashes (opd_bfd) == NULL) | |
5650 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
5651 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
8387904d AM |
5652 | 0, NULL, NULL, NULL); |
5653 | if (sym == NULL) | |
645ea6a9 | 5654 | break; |
8387904d AM |
5655 | symtab_hdr->contents = (bfd_byte *) sym; |
5656 | } | |
5657 | ||
5658 | sym += symndx; | |
5659 | val = sym->st_value; | |
cb33740c | 5660 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5661 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5662 | } | |
5663 | else | |
5664 | { | |
5665 | struct elf_link_hash_entry **sym_hashes; | |
5666 | struct elf_link_hash_entry *rh; | |
5667 | ||
5668 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5669 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5670 | if (rh != NULL) |
5671 | { | |
5672 | rh = elf_follow_link (rh); | |
5673 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5674 | || rh->root.type == bfd_link_hash_defweak); | |
5675 | val = rh->root.u.def.value; | |
5676 | sec = rh->root.u.def.section; | |
5677 | } | |
5678 | else | |
5679 | { | |
5680 | /* Handle the odd case where we can be called | |
5681 | during bfd_elf_link_add_symbols before the | |
5682 | symbol hashes have been fully populated. */ | |
5683 | Elf_Internal_Sym *sym; | |
5684 | ||
5685 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
5686 | symndx, NULL, NULL, NULL); | |
5687 | if (sym == NULL) | |
5688 | break; | |
5689 | ||
5690 | val = sym->st_value; | |
5691 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5692 | free (sym); | |
5693 | } | |
8387904d AM |
5694 | } |
5695 | val += look->r_addend; | |
5696 | if (code_off != NULL) | |
5697 | *code_off = val; | |
5698 | if (code_sec != NULL) | |
aef36ac1 AM |
5699 | { |
5700 | if (in_code_sec && *code_sec != sec) | |
5701 | return -1; | |
5702 | else | |
5703 | *code_sec = sec; | |
5704 | } | |
8387904d AM |
5705 | if (sec != NULL && sec->output_section != NULL) |
5706 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5707 | } |
5708 | break; | |
5709 | } | |
5710 | } | |
645ea6a9 | 5711 | |
645ea6a9 | 5712 | return val; |
8387904d AM |
5713 | } |
5714 | ||
aef36ac1 AM |
5715 | /* If the ELF symbol SYM might be a function in SEC, return the |
5716 | function size and set *CODE_OFF to the function's entry point, | |
5717 | otherwise return zero. */ | |
9f296da3 | 5718 | |
aef36ac1 AM |
5719 | static bfd_size_type |
5720 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5721 | bfd_vma *code_off) | |
9f296da3 | 5722 | { |
aef36ac1 AM |
5723 | bfd_size_type size; |
5724 | ||
5725 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5726 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5727 | return 0; | |
5728 | ||
5729 | size = 0; | |
5730 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5731 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5732 | ||
5733 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5734 | { |
aef36ac1 AM |
5735 | if (opd_entry_value (sym->section, sym->value, |
5736 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
5737 | return 0; | |
5738 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5739 | symbol. This size has nothing to do with the code size of the | |
5740 | function, which is what we're supposed to return, but the | |
5741 | code size isn't available without looking up the dot-sym. | |
5742 | However, doing that would be a waste of time particularly | |
5743 | since elf_find_function will look at the dot-sym anyway. | |
5744 | Now, elf_find_function will keep the largest size of any | |
5745 | function sym found at the code address of interest, so return | |
5746 | 1 here to avoid it incorrectly caching a larger function size | |
5747 | for a small function. This does mean we return the wrong | |
5748 | size for a new-ABI function of size 24, but all that does is | |
5749 | disable caching for such functions. */ | |
5750 | if (size == 24) | |
5751 | size = 1; | |
9f296da3 | 5752 | } |
aef36ac1 AM |
5753 | else |
5754 | { | |
5755 | if (sym->section != sec) | |
5756 | return 0; | |
5757 | *code_off = sym->value; | |
5758 | } | |
5759 | if (size == 0) | |
5760 | size = 1; | |
5761 | return size; | |
9f296da3 AM |
5762 | } |
5763 | ||
854b41e7 AM |
5764 | /* Return true if symbol is defined in a regular object file. */ |
5765 | ||
5766 | static bfd_boolean | |
5767 | is_static_defined (struct elf_link_hash_entry *h) | |
5768 | { | |
5769 | return ((h->root.type == bfd_link_hash_defined | |
5770 | || h->root.type == bfd_link_hash_defweak) | |
5771 | && h->root.u.def.section != NULL | |
5772 | && h->root.u.def.section->output_section != NULL); | |
5773 | } | |
5774 | ||
b31867b6 AM |
5775 | /* If FDH is a function descriptor symbol, return the associated code |
5776 | entry symbol if it is defined. Return NULL otherwise. */ | |
5777 | ||
5778 | static struct ppc_link_hash_entry * | |
5779 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5780 | { | |
5781 | if (fdh->is_func_descriptor) | |
5782 | { | |
5783 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5784 | if (fh->elf.root.type == bfd_link_hash_defined | |
5785 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5786 | return fh; | |
5787 | } | |
5788 | return NULL; | |
5789 | } | |
5790 | ||
5791 | /* If FH is a function code entry symbol, return the associated | |
5792 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5793 | ||
5794 | static struct ppc_link_hash_entry * | |
5795 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5796 | { | |
5797 | if (fh->oh != NULL | |
5798 | && fh->oh->is_func_descriptor) | |
5799 | { | |
5800 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5801 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5802 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5803 | return fdh; | |
5804 | } | |
5805 | return NULL; | |
5806 | } | |
5807 | ||
74f0fb50 AM |
5808 | /* Mark all our entry sym sections, both opd and code section. */ |
5809 | ||
5810 | static void | |
5811 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5812 | { | |
5813 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5814 | struct bfd_sym_chain *sym; | |
5815 | ||
4dfe6ac6 NC |
5816 | if (htab == NULL) |
5817 | return; | |
5818 | ||
74f0fb50 AM |
5819 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5820 | { | |
b31867b6 | 5821 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5822 | asection *sec; |
5823 | ||
5824 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5825 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5826 | if (eh == NULL) |
5827 | continue; | |
5828 | if (eh->elf.root.type != bfd_link_hash_defined | |
5829 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5830 | continue; | |
5831 | ||
b31867b6 AM |
5832 | fh = defined_code_entry (eh); |
5833 | if (fh != NULL) | |
74f0fb50 | 5834 | { |
b31867b6 | 5835 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5836 | sec->flags |= SEC_KEEP; |
5837 | } | |
5838 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5839 | && opd_entry_value (eh->elf.root.u.def.section, | |
5840 | eh->elf.root.u.def.value, | |
aef36ac1 | 5841 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5842 | sec->flags |= SEC_KEEP; |
5843 | ||
5844 | sec = eh->elf.root.u.def.section; | |
5845 | sec->flags |= SEC_KEEP; | |
5846 | } | |
5847 | } | |
5848 | ||
64d03ab5 AM |
5849 | /* Mark sections containing dynamically referenced symbols. When |
5850 | building shared libraries, we must assume that any visible symbol is | |
5851 | referenced. */ | |
5852 | ||
5853 | static bfd_boolean | |
5854 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5855 | { | |
5856 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5857 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5858 | struct ppc_link_hash_entry *fdh; |
64d03ab5 | 5859 | |
64d03ab5 | 5860 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5861 | fdh = defined_func_desc (eh); |
5862 | if (fdh != NULL) | |
5863 | eh = fdh; | |
64d03ab5 AM |
5864 | |
5865 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5866 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5867 | && (eh->elf.ref_dynamic | |
5868 | || (!info->executable | |
5869 | && eh->elf.def_regular | |
5870 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
4c58e0d8 AM |
5871 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
5872 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
5873 | || !bfd_hide_sym_by_version (info->version_info, | |
5874 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5875 | { |
5876 | asection *code_sec; | |
b31867b6 | 5877 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5878 | |
5879 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5880 | ||
5881 | /* Function descriptor syms cause the associated | |
5882 | function code sym section to be marked. */ | |
b31867b6 AM |
5883 | fh = defined_code_entry (eh); |
5884 | if (fh != NULL) | |
5885 | { | |
5886 | code_sec = fh->elf.root.u.def.section; | |
5887 | code_sec->flags |= SEC_KEEP; | |
5888 | } | |
64d03ab5 AM |
5889 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5890 | && opd_entry_value (eh->elf.root.u.def.section, | |
5891 | eh->elf.root.u.def.value, | |
aef36ac1 | 5892 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5893 | code_sec->flags |= SEC_KEEP; |
5894 | } | |
5895 | ||
5896 | return TRUE; | |
5897 | } | |
5898 | ||
5bd4f169 AM |
5899 | /* Return the section that should be marked against GC for a given |
5900 | relocation. */ | |
5901 | ||
5902 | static asection * | |
4ce794b7 | 5903 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5904 | struct bfd_link_info *info, |
4ce794b7 AM |
5905 | Elf_Internal_Rela *rel, |
5906 | struct elf_link_hash_entry *h, | |
5907 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5908 | { |
ccfa59ea AM |
5909 | asection *rsec; |
5910 | ||
ccfa59ea AM |
5911 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5912 | function sections, as all functions are referenced in .opd. */ | |
5913 | rsec = NULL; | |
5914 | if (get_opd_info (sec) != NULL) | |
5915 | return rsec; | |
1e2f5b6e | 5916 | |
5bd4f169 AM |
5917 | if (h != NULL) |
5918 | { | |
04c9666a | 5919 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5920 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5921 | |
4ce794b7 | 5922 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5923 | switch (r_type) |
5bd4f169 AM |
5924 | { |
5925 | case R_PPC64_GNU_VTINHERIT: | |
5926 | case R_PPC64_GNU_VTENTRY: | |
5927 | break; | |
5928 | ||
5929 | default: | |
5930 | switch (h->root.type) | |
5931 | { | |
5932 | case bfd_link_hash_defined: | |
5933 | case bfd_link_hash_defweak: | |
ccfa59ea | 5934 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5935 | fdh = defined_func_desc (eh); |
5936 | if (fdh != NULL) | |
5937 | eh = fdh; | |
1e2f5b6e AM |
5938 | |
5939 | /* Function descriptor syms cause the associated | |
5940 | function code sym section to be marked. */ | |
b31867b6 AM |
5941 | fh = defined_code_entry (eh); |
5942 | if (fh != NULL) | |
ccfa59ea AM |
5943 | { |
5944 | /* They also mark their opd section. */ | |
74f0fb50 | 5945 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5946 | |
b31867b6 | 5947 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5948 | } |
8387904d AM |
5949 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5950 | && opd_entry_value (eh->elf.root.u.def.section, | |
5951 | eh->elf.root.u.def.value, | |
aef36ac1 | 5952 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5953 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5954 | else |
1e2f5b6e AM |
5955 | rsec = h->root.u.def.section; |
5956 | break; | |
5bd4f169 AM |
5957 | |
5958 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5959 | rsec = h->root.u.c.p->section; |
5960 | break; | |
5bd4f169 AM |
5961 | |
5962 | default: | |
fb34365b | 5963 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5964 | } |
5965 | } | |
5966 | } | |
5967 | else | |
5968 | { | |
74f0fb50 | 5969 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5970 | |
5971 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5972 | opd = get_opd_info (rsec); |
5973 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5974 | { |
74f0fb50 | 5975 | rsec->gc_mark = 1; |
ccfa59ea | 5976 | |
74f0fb50 | 5977 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5978 | } |
5bd4f169 AM |
5979 | } |
5980 | ||
1e2f5b6e | 5981 | return rsec; |
5bd4f169 AM |
5982 | } |
5983 | ||
65f38f15 AM |
5984 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5985 | section being removed. */ | |
5bd4f169 | 5986 | |
b34976b6 | 5987 | static bfd_boolean |
4ce794b7 AM |
5988 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5989 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5990 | { |
411e1bfb | 5991 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5992 | Elf_Internal_Shdr *symtab_hdr; |
5993 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5994 | struct got_entry **local_got_ents; |
5bd4f169 | 5995 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5996 | |
7dda2462 TG |
5997 | if (info->relocatable) |
5998 | return TRUE; | |
5999 | ||
680a3378 AM |
6000 | if ((sec->flags & SEC_ALLOC) == 0) |
6001 | return TRUE; | |
6002 | ||
ec338859 AM |
6003 | elf_section_data (sec)->local_dynrel = NULL; |
6004 | ||
411e1bfb | 6005 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6006 | if (htab == NULL) |
6007 | return FALSE; | |
6008 | ||
0ffa91dd | 6009 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6010 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6011 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6012 | |
6013 | relend = relocs + sec->reloc_count; | |
6014 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6015 | { |
6016 | unsigned long r_symndx; | |
04c9666a | 6017 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6018 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6019 | unsigned char tls_type = 0; |
5bd4f169 | 6020 | |
a33d1f77 | 6021 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6022 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6023 | if (r_symndx >= symtab_hdr->sh_info) |
6024 | { | |
6025 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6026 | struct elf_dyn_relocs **pp; |
6027 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6028 | |
6029 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6030 | h = elf_follow_link (h); |
58ac9f71 AM |
6031 | eh = (struct ppc_link_hash_entry *) h; |
6032 | ||
6033 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6034 | if (p->sec == sec) | |
6035 | { | |
6036 | /* Everything must go for SEC. */ | |
6037 | *pp = p->next; | |
6038 | break; | |
6039 | } | |
6040 | } | |
6041 | ||
e054468f AM |
6042 | if (is_branch_reloc (r_type)) |
6043 | { | |
6044 | struct plt_entry **ifunc = NULL; | |
6045 | if (h != NULL) | |
6046 | { | |
6047 | if (h->type == STT_GNU_IFUNC) | |
6048 | ifunc = &h->plt.plist; | |
6049 | } | |
6050 | else if (local_got_ents != NULL) | |
6051 | { | |
6052 | struct plt_entry **local_plt = (struct plt_entry **) | |
6053 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6054 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6055 | (local_plt + symtab_hdr->sh_info); |
6056 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6057 | ifunc = local_plt + r_symndx; | |
6058 | } | |
6059 | if (ifunc != NULL) | |
6060 | { | |
6061 | struct plt_entry *ent; | |
6062 | ||
6063 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6064 | if (ent->addend == rel->r_addend) | |
6065 | break; | |
6066 | if (ent == NULL) | |
6067 | abort (); | |
6068 | if (ent->plt.refcount > 0) | |
6069 | ent->plt.refcount -= 1; | |
6070 | continue; | |
6071 | } | |
6072 | } | |
6073 | ||
a33d1f77 AM |
6074 | switch (r_type) |
6075 | { | |
411e1bfb AM |
6076 | case R_PPC64_GOT_TLSLD16: |
6077 | case R_PPC64_GOT_TLSLD16_LO: | |
6078 | case R_PPC64_GOT_TLSLD16_HI: | |
6079 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6080 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6081 | goto dogot; |
6082 | ||
6083 | case R_PPC64_GOT_TLSGD16: | |
6084 | case R_PPC64_GOT_TLSGD16_LO: | |
6085 | case R_PPC64_GOT_TLSGD16_HI: | |
6086 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6087 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6088 | goto dogot; |
6089 | ||
6090 | case R_PPC64_GOT_TPREL16_DS: | |
6091 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6092 | case R_PPC64_GOT_TPREL16_HI: | |
6093 | case R_PPC64_GOT_TPREL16_HA: | |
6094 | tls_type = TLS_TLS | TLS_TPREL; | |
6095 | goto dogot; | |
6096 | ||
6097 | case R_PPC64_GOT_DTPREL16_DS: | |
6098 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6099 | case R_PPC64_GOT_DTPREL16_HI: | |
6100 | case R_PPC64_GOT_DTPREL16_HA: | |
6101 | tls_type = TLS_TLS | TLS_DTPREL; | |
6102 | goto dogot; | |
6103 | ||
a33d1f77 AM |
6104 | case R_PPC64_GOT16: |
6105 | case R_PPC64_GOT16_DS: | |
6106 | case R_PPC64_GOT16_HA: | |
6107 | case R_PPC64_GOT16_HI: | |
6108 | case R_PPC64_GOT16_LO: | |
6109 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6110 | dogot: |
6111 | { | |
6112 | struct got_entry *ent; | |
6113 | ||
58ac9f71 AM |
6114 | if (h != NULL) |
6115 | ent = h->got.glist; | |
411e1bfb AM |
6116 | else |
6117 | ent = local_got_ents[r_symndx]; | |
6118 | ||
6119 | for (; ent != NULL; ent = ent->next) | |
6120 | if (ent->addend == rel->r_addend | |
e717da7e | 6121 | && ent->owner == abfd |
411e1bfb AM |
6122 | && ent->tls_type == tls_type) |
6123 | break; | |
6124 | if (ent == NULL) | |
6125 | abort (); | |
6126 | if (ent->got.refcount > 0) | |
6127 | ent->got.refcount -= 1; | |
6128 | } | |
a33d1f77 | 6129 | break; |
65f38f15 | 6130 | |
a33d1f77 AM |
6131 | case R_PPC64_PLT16_HA: |
6132 | case R_PPC64_PLT16_HI: | |
6133 | case R_PPC64_PLT16_LO: | |
6134 | case R_PPC64_PLT32: | |
6135 | case R_PPC64_PLT64: | |
721956f4 AM |
6136 | case R_PPC64_REL14: |
6137 | case R_PPC64_REL14_BRNTAKEN: | |
6138 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6139 | case R_PPC64_REL24: |
58ac9f71 | 6140 | if (h != NULL) |
5d1634d7 | 6141 | { |
411e1bfb AM |
6142 | struct plt_entry *ent; |
6143 | ||
411e1bfb AM |
6144 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6145 | if (ent->addend == rel->r_addend) | |
6146 | break; | |
7c6c1722 | 6147 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6148 | ent->plt.refcount -= 1; |
5d1634d7 | 6149 | } |
e86ce104 | 6150 | break; |
5d1634d7 | 6151 | |
a33d1f77 AM |
6152 | default: |
6153 | break; | |
6154 | } | |
6155 | } | |
b34976b6 | 6156 | return TRUE; |
5bd4f169 AM |
6157 | } |
6158 | ||
deb0e272 AM |
6159 | /* The maximum size of .sfpr. */ |
6160 | #define SFPR_MAX (218*4) | |
6161 | ||
6162 | struct sfpr_def_parms | |
6163 | { | |
699733f6 AM |
6164 | const char name[12]; |
6165 | unsigned char lo, hi; | |
deb0e272 AM |
6166 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6167 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6168 | }; | |
6169 | ||
6170 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6171 | ||
4dfe6ac6 | 6172 | static bfd_boolean |
deb0e272 AM |
6173 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6174 | { | |
6175 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6176 | unsigned int i; | |
6177 | size_t len = strlen (parm->name); | |
6178 | bfd_boolean writing = FALSE; | |
699733f6 | 6179 | char sym[16]; |
deb0e272 | 6180 | |
4dfe6ac6 NC |
6181 | if (htab == NULL) |
6182 | return FALSE; | |
6183 | ||
deb0e272 AM |
6184 | memcpy (sym, parm->name, len); |
6185 | sym[len + 2] = 0; | |
6186 | ||
6187 | for (i = parm->lo; i <= parm->hi; i++) | |
6188 | { | |
6189 | struct elf_link_hash_entry *h; | |
6190 | ||
6191 | sym[len + 0] = i / 10 + '0'; | |
6192 | sym[len + 1] = i % 10 + '0'; | |
6193 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6194 | if (h != NULL | |
f5385ebf | 6195 | && !h->def_regular) |
deb0e272 AM |
6196 | { |
6197 | h->root.type = bfd_link_hash_defined; | |
6198 | h->root.u.def.section = htab->sfpr; | |
6199 | h->root.u.def.value = htab->sfpr->size; | |
6200 | h->type = STT_FUNC; | |
f5385ebf | 6201 | h->def_regular = 1; |
deb0e272 AM |
6202 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6203 | writing = TRUE; | |
6204 | if (htab->sfpr->contents == NULL) | |
6205 | { | |
6206 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6207 | if (htab->sfpr->contents == NULL) | |
6208 | return FALSE; | |
6209 | } | |
6210 | } | |
6211 | if (writing) | |
6212 | { | |
6213 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6214 | if (i != parm->hi) | |
6215 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6216 | else | |
6217 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6218 | htab->sfpr->size = p - htab->sfpr->contents; | |
6219 | } | |
6220 | } | |
6221 | ||
6222 | return TRUE; | |
6223 | } | |
6224 | ||
6225 | static bfd_byte * | |
6226 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6227 | { | |
6228 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6229 | return p + 4; | |
6230 | } | |
6231 | ||
6232 | static bfd_byte * | |
6233 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6234 | { | |
6235 | p = savegpr0 (abfd, p, r); | |
6236 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6237 | p = p + 4; | |
6238 | bfd_put_32 (abfd, BLR, p); | |
6239 | return p + 4; | |
6240 | } | |
6241 | ||
6242 | static bfd_byte * | |
6243 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6244 | { | |
6245 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6246 | return p + 4; | |
6247 | } | |
6248 | ||
6249 | static bfd_byte * | |
6250 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6251 | { | |
6252 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6253 | p = p + 4; | |
6254 | p = restgpr0 (abfd, p, r); | |
6255 | bfd_put_32 (abfd, MTLR_R0, p); | |
6256 | p = p + 4; | |
6257 | if (r == 29) | |
6258 | { | |
6259 | p = restgpr0 (abfd, p, 30); | |
6260 | p = restgpr0 (abfd, p, 31); | |
6261 | } | |
6262 | bfd_put_32 (abfd, BLR, p); | |
6263 | return p + 4; | |
6264 | } | |
6265 | ||
6266 | static bfd_byte * | |
6267 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6268 | { | |
6269 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6270 | return p + 4; | |
6271 | } | |
6272 | ||
6273 | static bfd_byte * | |
6274 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6275 | { | |
6276 | p = savegpr1 (abfd, p, r); | |
6277 | bfd_put_32 (abfd, BLR, p); | |
6278 | return p + 4; | |
6279 | } | |
6280 | ||
6281 | static bfd_byte * | |
6282 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6283 | { | |
6284 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6285 | return p + 4; | |
6286 | } | |
6287 | ||
6288 | static bfd_byte * | |
6289 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6290 | { | |
6291 | p = restgpr1 (abfd, p, r); | |
6292 | bfd_put_32 (abfd, BLR, p); | |
6293 | return p + 4; | |
6294 | } | |
6295 | ||
6296 | static bfd_byte * | |
6297 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6298 | { | |
6299 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6300 | return p + 4; | |
6301 | } | |
6302 | ||
6303 | static bfd_byte * | |
6304 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6305 | { | |
6306 | p = savefpr (abfd, p, r); | |
6307 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6308 | p = p + 4; | |
6309 | bfd_put_32 (abfd, BLR, p); | |
6310 | return p + 4; | |
6311 | } | |
6312 | ||
6313 | static bfd_byte * | |
6314 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6315 | { | |
6316 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6317 | return p + 4; | |
6318 | } | |
6319 | ||
6320 | static bfd_byte * | |
6321 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6322 | { | |
6323 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6324 | p = p + 4; | |
6325 | p = restfpr (abfd, p, r); | |
6326 | bfd_put_32 (abfd, MTLR_R0, p); | |
6327 | p = p + 4; | |
6328 | if (r == 29) | |
6329 | { | |
6330 | p = restfpr (abfd, p, 30); | |
6331 | p = restfpr (abfd, p, 31); | |
6332 | } | |
6333 | bfd_put_32 (abfd, BLR, p); | |
6334 | return p + 4; | |
6335 | } | |
6336 | ||
6337 | static bfd_byte * | |
6338 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6339 | { | |
6340 | p = savefpr (abfd, p, r); | |
6341 | bfd_put_32 (abfd, BLR, p); | |
6342 | return p + 4; | |
6343 | } | |
6344 | ||
6345 | static bfd_byte * | |
6346 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6347 | { | |
6348 | p = restfpr (abfd, p, r); | |
6349 | bfd_put_32 (abfd, BLR, p); | |
6350 | return p + 4; | |
6351 | } | |
6352 | ||
6353 | static bfd_byte * | |
6354 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6355 | { | |
6356 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6357 | p = p + 4; | |
6358 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6359 | return p + 4; | |
6360 | } | |
6361 | ||
6362 | static bfd_byte * | |
6363 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6364 | { | |
6365 | p = savevr (abfd, p, r); | |
6366 | bfd_put_32 (abfd, BLR, p); | |
6367 | return p + 4; | |
6368 | } | |
6369 | ||
6370 | static bfd_byte * | |
6371 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6372 | { | |
6373 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6374 | p = p + 4; | |
6375 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6376 | return p + 4; | |
6377 | } | |
6378 | ||
6379 | static bfd_byte * | |
6380 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6381 | { | |
6382 | p = restvr (abfd, p, r); | |
6383 | bfd_put_32 (abfd, BLR, p); | |
6384 | return p + 4; | |
6385 | } | |
6386 | ||
e86ce104 AM |
6387 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6388 | information on function code symbol entries to their corresponding | |
6389 | function descriptor symbol entries. */ | |
deb0e272 | 6390 | |
b34976b6 | 6391 | static bfd_boolean |
4ce794b7 | 6392 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6393 | { |
e86ce104 | 6394 | struct bfd_link_info *info; |
65f38f15 | 6395 | struct ppc_link_hash_table *htab; |
411e1bfb | 6396 | struct plt_entry *ent; |
50bc7936 AM |
6397 | struct ppc_link_hash_entry *fh; |
6398 | struct ppc_link_hash_entry *fdh; | |
6399 | bfd_boolean force_local; | |
5bd4f169 | 6400 | |
50bc7936 AM |
6401 | fh = (struct ppc_link_hash_entry *) h; |
6402 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6403 | return TRUE; |
e86ce104 | 6404 | |
4ce794b7 | 6405 | info = inf; |
65f38f15 | 6406 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6407 | if (htab == NULL) |
6408 | return FALSE; | |
5bd4f169 | 6409 | |
c09bdfe5 AM |
6410 | /* Resolve undefined references to dot-symbols as the value |
6411 | in the function descriptor, if we have one in a regular object. | |
6412 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6413 | in dynamic objects are handled elsewhere. */ | |
6414 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6415 | && fh->was_undefined | |
b31867b6 AM |
6416 | && (fdh = defined_func_desc (fh)) != NULL |
6417 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6418 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6419 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6420 | &fh->elf.root.u.def.section, |
aef36ac1 | 6421 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6422 | { |
b31867b6 | 6423 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6424 | fh->elf.forced_local = 1; |
b31867b6 AM |
6425 | fh->elf.def_regular = fdh->elf.def_regular; |
6426 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6427 | } |
6428 | ||
e86ce104 AM |
6429 | /* If this is a function code symbol, transfer dynamic linking |
6430 | information to the function descriptor symbol. */ | |
50bc7936 | 6431 | if (!fh->is_func) |
b34976b6 | 6432 | return TRUE; |
e86ce104 | 6433 | |
50bc7936 | 6434 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6435 | if (ent->plt.refcount > 0) |
6436 | break; | |
50bc7936 AM |
6437 | if (ent == NULL |
6438 | || fh->elf.root.root.string[0] != '.' | |
6439 | || fh->elf.root.root.string[1] == '\0') | |
6440 | return TRUE; | |
5bd4f169 | 6441 | |
50bc7936 AM |
6442 | /* Find the corresponding function descriptor symbol. Create it |
6443 | as undefined if necessary. */ | |
5bd4f169 | 6444 | |
b31867b6 | 6445 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6446 | if (fdh == NULL |
df131623 | 6447 | && !info->executable |
50bc7936 AM |
6448 | && (fh->elf.root.type == bfd_link_hash_undefined |
6449 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6450 | { | |
908b32fc | 6451 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6452 | if (fdh == NULL) |
6453 | return FALSE; | |
50bc7936 | 6454 | } |
648cca2c | 6455 | |
908b32fc | 6456 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6457 | code symbol is strong undefined, make the fake sym the same. |
6458 | If the function code symbol is defined, then force the fake | |
6459 | descriptor local; We can't support overriding of symbols in a | |
6460 | shared library on a fake descriptor. */ | |
908b32fc AM |
6461 | |
6462 | if (fdh != NULL | |
6463 | && fdh->fake | |
433817dd | 6464 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6465 | { |
433817dd AM |
6466 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6467 | { | |
6468 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6469 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6470 | } | |
6471 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6472 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6473 | { | |
6474 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6475 | } | |
908b32fc AM |
6476 | } |
6477 | ||
50bc7936 | 6478 | if (fdh != NULL |
f5385ebf | 6479 | && !fdh->elf.forced_local |
df131623 | 6480 | && (!info->executable |
f5385ebf AM |
6481 | || fdh->elf.def_dynamic |
6482 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6483 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6484 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6485 | { | |
6486 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6487 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6488 | return FALSE; |
f5385ebf AM |
6489 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6490 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6491 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6492 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6493 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6494 | { |
40d16e0b | 6495 | move_plt_plist (fh, fdh); |
f5385ebf | 6496 | fdh->elf.needs_plt = 1; |
e86ce104 | 6497 | } |
50bc7936 | 6498 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6499 | fdh->oh = fh; |
6500 | fh->oh = fdh; | |
e86ce104 AM |
6501 | } |
6502 | ||
50bc7936 AM |
6503 | /* Now that the info is on the function descriptor, clear the |
6504 | function code sym info. Any function code syms for which we | |
6505 | don't have a definition in a regular file, we force local. | |
6506 | This prevents a shared library from exporting syms that have | |
6507 | been imported from another library. Function code syms that | |
6508 | are really in the library we must leave global to prevent the | |
6509 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6510 | force_local = (!fh->elf.def_regular |
6511 | || fdh == NULL | |
6512 | || !fdh->elf.def_regular | |
6513 | || fdh->elf.forced_local); | |
50bc7936 AM |
6514 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6515 | ||
b34976b6 | 6516 | return TRUE; |
e86ce104 | 6517 | } |
40b8271b | 6518 | |
e86ce104 | 6519 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6520 | this hook to a) provide some gcc support functions, and b) transfer |
6521 | dynamic linking information gathered so far on function code symbol | |
6522 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6523 | |
b34976b6 | 6524 | static bfd_boolean |
4ce794b7 AM |
6525 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6526 | struct bfd_link_info *info) | |
e86ce104 AM |
6527 | { |
6528 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6529 | unsigned int i; |
27fc25a1 | 6530 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6531 | { |
6532 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6533 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6534 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6535 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6536 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6537 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6538 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6539 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6540 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6541 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6542 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6543 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6544 | }; | |
e86ce104 AM |
6545 | |
6546 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6547 | if (htab == NULL) |
6548 | return FALSE; | |
6549 | ||
c66bb0ee AM |
6550 | if (htab->elf.hgot != NULL) |
6551 | { | |
6552 | htab->elf.hgot->root.type = bfd_link_hash_new; | |
6553 | htab->elf.hgot->type = STT_OBJECT; | |
6554 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6555 | } | |
6556 | ||
82bd7b59 AM |
6557 | if (htab->sfpr == NULL) |
6558 | /* We don't have any relocs. */ | |
b34976b6 | 6559 | return TRUE; |
82bd7b59 | 6560 | |
deb0e272 AM |
6561 | /* Provide any missing _save* and _rest* functions. */ |
6562 | htab->sfpr->size = 0; | |
27fc25a1 AM |
6563 | if (!info->relocatable) |
6564 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6565 | if (!sfpr_define (info, &funcs[i])) | |
6566 | return FALSE; | |
82bd7b59 | 6567 | |
4ce794b7 | 6568 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6569 | |
eea6121a | 6570 | if (htab->sfpr->size == 0) |
8423293d | 6571 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6572 | |
b34976b6 | 6573 | return TRUE; |
e86ce104 AM |
6574 | } |
6575 | ||
6576 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6577 | regular object. The current definition is in some section of the | |
6578 | dynamic object, but we're not including those sections. We have to | |
6579 | change the definition to something the rest of the link can | |
6580 | understand. */ | |
6581 | ||
b34976b6 | 6582 | static bfd_boolean |
4ce794b7 AM |
6583 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6584 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6585 | { |
6586 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6587 | asection *s; |
e86ce104 AM |
6588 | |
6589 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6590 | if (htab == NULL) |
6591 | return FALSE; | |
e86ce104 AM |
6592 | |
6593 | /* Deal with function syms. */ | |
6594 | if (h->type == STT_FUNC | |
e054468f | 6595 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6596 | || h->needs_plt) |
e86ce104 AM |
6597 | { |
6598 | /* Clear procedure linkage table information for any symbol that | |
6599 | won't need a .plt entry. */ | |
411e1bfb AM |
6600 | struct plt_entry *ent; |
6601 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6602 | if (ent->plt.refcount > 0) | |
6603 | break; | |
8387904d | 6604 | if (ent == NULL |
e054468f AM |
6605 | || (h->type != STT_GNU_IFUNC |
6606 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6607 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6608 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6609 | { |
411e1bfb | 6610 | h->plt.plist = NULL; |
f5385ebf | 6611 | h->needs_plt = 0; |
40b8271b | 6612 | } |
5bd4f169 | 6613 | } |
bbd7ec4a | 6614 | else |
411e1bfb | 6615 | h->plt.plist = NULL; |
5bd4f169 AM |
6616 | |
6617 | /* If this is a weak symbol, and there is a real definition, the | |
6618 | processor independent code will have arranged for us to see the | |
6619 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6620 | if (h->u.weakdef != NULL) |
5bd4f169 | 6621 | { |
f6e332e6 AM |
6622 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6623 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6624 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6625 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6626 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6627 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6628 | return TRUE; |
5bd4f169 AM |
6629 | } |
6630 | ||
5bd4f169 AM |
6631 | /* If we are creating a shared library, we must presume that the |
6632 | only references to the symbol are via the global offset table. | |
6633 | For such cases we need not do anything here; the relocations will | |
6634 | be handled correctly by relocate_section. */ | |
6635 | if (info->shared) | |
b34976b6 | 6636 | return TRUE; |
5bd4f169 | 6637 | |
65f38f15 AM |
6638 | /* If there are no references to this symbol that do not use the |
6639 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6640 | if (!h->non_got_ref) |
b34976b6 | 6641 | return TRUE; |
65f38f15 | 6642 | |
b186458a JJ |
6643 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6644 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6645 | return TRUE; | |
6646 | ||
f4656909 | 6647 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6648 | { |
f4656909 | 6649 | struct ppc_link_hash_entry * eh; |
6061a67d | 6650 | struct elf_dyn_relocs *p; |
65f38f15 | 6651 | |
f4656909 AM |
6652 | eh = (struct ppc_link_hash_entry *) h; |
6653 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6654 | { | |
6655 | s = p->sec->output_section; | |
6656 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6657 | break; | |
6658 | } | |
6659 | ||
6660 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6661 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6662 | if (p == NULL) | |
6663 | { | |
f5385ebf | 6664 | h->non_got_ref = 0; |
f4656909 AM |
6665 | return TRUE; |
6666 | } | |
65f38f15 AM |
6667 | } |
6668 | ||
5d35169e | 6669 | if (h->plt.plist != NULL) |
97b639ba AM |
6670 | { |
6671 | /* We should never get here, but unfortunately there are versions | |
6672 | of gcc out there that improperly (for this ABI) put initialized | |
6673 | function pointers, vtable refs and suchlike in read-only | |
6674 | sections. Allow them to proceed, but warn that this might | |
6675 | break at runtime. */ | |
25f53a85 | 6676 | info->callbacks->einfo |
bc30df16 | 6677 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 6678 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6679 | h->root.root.string); |
6680 | } | |
5d35169e AM |
6681 | |
6682 | /* This is a reference to a symbol defined by a dynamic object which | |
6683 | is not a function. */ | |
6684 | ||
5bd4f169 AM |
6685 | /* We must allocate the symbol in our .dynbss section, which will |
6686 | become part of the .bss section of the executable. There will be | |
6687 | an entry for this symbol in the .dynsym section. The dynamic | |
6688 | object will contain position independent code, so all references | |
6689 | from the dynamic object to this symbol will go through the global | |
6690 | offset table. The dynamic linker will use the .dynsym entry to | |
6691 | determine the address it must put in the global offset table, so | |
6692 | both the dynamic object and the regular object will refer to the | |
6693 | same memory location for the variable. */ | |
5bd4f169 | 6694 | |
04c9666a AM |
6695 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6696 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6697 | runtime process image. We need to remember the offset into the |
6698 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 6699 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6700 | { |
eea6121a | 6701 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6702 | h->needs_copy = 1; |
5bd4f169 AM |
6703 | } |
6704 | ||
4ce794b7 | 6705 | s = htab->dynbss; |
5bd4f169 | 6706 | |
027297b7 | 6707 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6708 | } |
6709 | ||
e86ce104 AM |
6710 | /* If given a function descriptor symbol, hide both the function code |
6711 | sym and the descriptor. */ | |
6712 | static void | |
4ce794b7 AM |
6713 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6714 | struct elf_link_hash_entry *h, | |
6715 | bfd_boolean force_local) | |
e86ce104 | 6716 | { |
34814b9f | 6717 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6718 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6719 | ||
34814b9f AM |
6720 | eh = (struct ppc_link_hash_entry *) h; |
6721 | if (eh->is_func_descriptor) | |
e86ce104 | 6722 | { |
34814b9f | 6723 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6724 | |
721956f4 | 6725 | if (fh == NULL) |
d1329ca3 AM |
6726 | { |
6727 | const char *p, *q; | |
6728 | struct ppc_link_hash_table *htab; | |
6729 | char save; | |
6730 | ||
6731 | /* We aren't supposed to use alloca in BFD because on | |
6732 | systems which do not have alloca the version in libiberty | |
6733 | calls xmalloc, which might cause the program to crash | |
6734 | when it runs out of memory. This function doesn't have a | |
6735 | return status, so there's no way to gracefully return an | |
6736 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6737 | accessed; It's either a string in an ELF string table, |
6738 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6739 | |
34814b9f | 6740 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6741 | save = *p; |
6742 | *(char *) p = '.'; | |
6743 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6744 | if (htab == NULL) |
6745 | return; | |
6746 | ||
34814b9f AM |
6747 | fh = (struct ppc_link_hash_entry *) |
6748 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6749 | *(char *) p = save; |
6750 | ||
6751 | /* Unfortunately, if it so happens that the string we were | |
6752 | looking for was allocated immediately before this string, | |
6753 | then we overwrote the string terminator. That's the only | |
6754 | reason the lookup should fail. */ | |
6755 | if (fh == NULL) | |
6756 | { | |
34814b9f AM |
6757 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6758 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6759 | --q, --p; |
34814b9f AM |
6760 | if (q < eh->elf.root.root.string && *p == '.') |
6761 | fh = (struct ppc_link_hash_entry *) | |
6762 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6763 | } |
6764 | if (fh != NULL) | |
6765 | { | |
34814b9f AM |
6766 | eh->oh = fh; |
6767 | fh->oh = eh; | |
d1329ca3 AM |
6768 | } |
6769 | } | |
e86ce104 | 6770 | if (fh != NULL) |
34814b9f | 6771 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6772 | } |
6773 | } | |
6774 | ||
411e1bfb | 6775 | static bfd_boolean |
8843416a AM |
6776 | get_sym_h (struct elf_link_hash_entry **hp, |
6777 | Elf_Internal_Sym **symp, | |
6778 | asection **symsecp, | |
f961d9dd | 6779 | unsigned char **tls_maskp, |
8843416a AM |
6780 | Elf_Internal_Sym **locsymsp, |
6781 | unsigned long r_symndx, | |
6782 | bfd *ibfd) | |
411e1bfb | 6783 | { |
0ffa91dd | 6784 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6785 | |
6786 | if (r_symndx >= symtab_hdr->sh_info) | |
6787 | { | |
6788 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6789 | struct elf_link_hash_entry *h; | |
6790 | ||
6791 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6792 | h = elf_follow_link (h); |
411e1bfb AM |
6793 | |
6794 | if (hp != NULL) | |
6795 | *hp = h; | |
6796 | ||
6797 | if (symp != NULL) | |
6798 | *symp = NULL; | |
6799 | ||
6800 | if (symsecp != NULL) | |
6801 | { | |
6802 | asection *symsec = NULL; | |
6803 | if (h->root.type == bfd_link_hash_defined | |
6804 | || h->root.type == bfd_link_hash_defweak) | |
6805 | symsec = h->root.u.def.section; | |
6806 | *symsecp = symsec; | |
6807 | } | |
6808 | ||
e7b938ca | 6809 | if (tls_maskp != NULL) |
411e1bfb AM |
6810 | { |
6811 | struct ppc_link_hash_entry *eh; | |
6812 | ||
6813 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6814 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6815 | } |
6816 | } | |
6817 | else | |
6818 | { | |
6819 | Elf_Internal_Sym *sym; | |
6820 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6821 | ||
6822 | if (locsyms == NULL) | |
6823 | { | |
6824 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6825 | if (locsyms == NULL) | |
6826 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6827 | symtab_hdr->sh_info, | |
6828 | 0, NULL, NULL, NULL); | |
6829 | if (locsyms == NULL) | |
6830 | return FALSE; | |
6831 | *locsymsp = locsyms; | |
6832 | } | |
6833 | sym = locsyms + r_symndx; | |
6834 | ||
6835 | if (hp != NULL) | |
6836 | *hp = NULL; | |
6837 | ||
6838 | if (symp != NULL) | |
6839 | *symp = sym; | |
6840 | ||
6841 | if (symsecp != NULL) | |
cb33740c | 6842 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6843 | |
e7b938ca | 6844 | if (tls_maskp != NULL) |
411e1bfb AM |
6845 | { |
6846 | struct got_entry **lgot_ents; | |
f961d9dd | 6847 | unsigned char *tls_mask; |
411e1bfb | 6848 | |
e7b938ca | 6849 | tls_mask = NULL; |
411e1bfb AM |
6850 | lgot_ents = elf_local_got_ents (ibfd); |
6851 | if (lgot_ents != NULL) | |
6852 | { | |
e054468f AM |
6853 | struct plt_entry **local_plt = (struct plt_entry **) |
6854 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6855 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6856 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6857 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6858 | } |
e7b938ca | 6859 | *tls_maskp = tls_mask; |
411e1bfb AM |
6860 | } |
6861 | } | |
6862 | return TRUE; | |
6863 | } | |
6864 | ||
e7b938ca | 6865 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6866 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6867 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6868 | |
6869 | static int | |
f961d9dd | 6870 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6871 | unsigned long *toc_symndx, |
6872 | bfd_vma *toc_addend, | |
0d4792f7 | 6873 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6874 | const Elf_Internal_Rela *rel, |
6875 | bfd *ibfd) | |
411e1bfb AM |
6876 | { |
6877 | unsigned long r_symndx; | |
0d4792f7 | 6878 | int next_r; |
411e1bfb AM |
6879 | struct elf_link_hash_entry *h; |
6880 | Elf_Internal_Sym *sym; | |
6881 | asection *sec; | |
6882 | bfd_vma off; | |
6883 | ||
6884 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6885 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6886 | return 0; |
411e1bfb | 6887 | |
e7b938ca | 6888 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6889 | || sec == NULL |
6bee8834 | 6890 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6891 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6892 | return 1; |
411e1bfb AM |
6893 | |
6894 | /* Look inside a TOC section too. */ | |
6895 | if (h != NULL) | |
6896 | { | |
6897 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6898 | off = h->root.u.def.value; | |
6899 | } | |
6900 | else | |
6901 | off = sym->st_value; | |
6902 | off += rel->r_addend; | |
6903 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6904 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6905 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6906 | if (toc_symndx != NULL) |
6907 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6908 | if (toc_addend != NULL) |
6909 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6910 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6911 | return 0; | |
854b41e7 | 6912 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6913 | && (next_r == -1 || next_r == -2)) |
6914 | return 1 - next_r; | |
951fd09b | 6915 | return 1; |
411e1bfb AM |
6916 | } |
6917 | ||
3b421ab3 AM |
6918 | /* Find (or create) an entry in the tocsave hash table. */ |
6919 | ||
6920 | static struct tocsave_entry * | |
6921 | tocsave_find (struct ppc_link_hash_table *htab, | |
6922 | enum insert_option insert, | |
6923 | Elf_Internal_Sym **local_syms, | |
6924 | const Elf_Internal_Rela *irela, | |
6925 | bfd *ibfd) | |
6926 | { | |
6927 | unsigned long r_indx; | |
6928 | struct elf_link_hash_entry *h; | |
6929 | Elf_Internal_Sym *sym; | |
6930 | struct tocsave_entry ent, *p; | |
6931 | hashval_t hash; | |
6932 | struct tocsave_entry **slot; | |
6933 | ||
6934 | r_indx = ELF64_R_SYM (irela->r_info); | |
6935 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6936 | return NULL; | |
6937 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6938 | { | |
6939 | (*_bfd_error_handler) | |
6940 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
6941 | return NULL; | |
6942 | } | |
6943 | ||
6944 | if (h != NULL) | |
6945 | ent.offset = h->root.u.def.value; | |
6946 | else | |
6947 | ent.offset = sym->st_value; | |
6948 | ent.offset += irela->r_addend; | |
6949 | ||
6950 | hash = tocsave_htab_hash (&ent); | |
6951 | slot = ((struct tocsave_entry **) | |
6952 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6953 | if (slot == NULL) | |
6954 | return NULL; | |
6955 | ||
6956 | if (*slot == NULL) | |
6957 | { | |
6958 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6959 | if (p == NULL) | |
6960 | return NULL; | |
6961 | *p = ent; | |
6962 | *slot = p; | |
6963 | } | |
6964 | return *slot; | |
6965 | } | |
6966 | ||
754021d0 | 6967 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6968 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6969 | |
6970 | static bfd_boolean | |
6971 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6972 | { | |
6973 | struct ppc_link_hash_entry *eh; | |
6974 | asection *sym_sec; | |
74f0fb50 | 6975 | struct _opd_sec_data *opd; |
754021d0 AM |
6976 | |
6977 | if (h->root.type == bfd_link_hash_indirect) | |
6978 | return TRUE; | |
6979 | ||
754021d0 AM |
6980 | if (h->root.type != bfd_link_hash_defined |
6981 | && h->root.type != bfd_link_hash_defweak) | |
6982 | return TRUE; | |
6983 | ||
6984 | eh = (struct ppc_link_hash_entry *) h; | |
6985 | if (eh->adjust_done) | |
6986 | return TRUE; | |
6987 | ||
6988 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6989 | opd = get_opd_info (sym_sec); |
6990 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6991 | { |
74f0fb50 | 6992 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6993 | if (adjust == -1) |
6994 | { | |
6995 | /* This entry has been deleted. */ | |
b3fac117 | 6996 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6997 | if (dsec == NULL) |
6998 | { | |
6999 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7000 | if (discarded_section (dsec)) |
81688140 | 7001 | { |
b3fac117 | 7002 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7003 | break; |
7004 | } | |
7005 | } | |
4025353c | 7006 | eh->elf.root.u.def.value = 0; |
81688140 | 7007 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7008 | } |
7009 | else | |
7010 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7011 | eh->adjust_done = 1; |
7012 | } | |
7013 | return TRUE; | |
7014 | } | |
7015 | ||
8c1d1bb8 | 7016 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7017 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7018 | have already been determined. */ |
7019 | ||
7020 | static bfd_boolean | |
7021 | dec_dynrel_count (bfd_vma r_info, | |
7022 | asection *sec, | |
7023 | struct bfd_link_info *info, | |
7024 | Elf_Internal_Sym **local_syms, | |
7025 | struct elf_link_hash_entry *h, | |
19e08130 | 7026 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7027 | { |
7028 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7029 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7030 | |
7031 | /* Can this reloc be dynamic? This switch, and later tests here | |
7032 | should be kept in sync with the code in check_relocs. */ | |
7033 | r_type = ELF64_R_TYPE (r_info); | |
7034 | switch (r_type) | |
7035 | { | |
7036 | default: | |
7037 | return TRUE; | |
7038 | ||
7039 | case R_PPC64_TPREL16: | |
7040 | case R_PPC64_TPREL16_LO: | |
7041 | case R_PPC64_TPREL16_HI: | |
7042 | case R_PPC64_TPREL16_HA: | |
7043 | case R_PPC64_TPREL16_DS: | |
7044 | case R_PPC64_TPREL16_LO_DS: | |
7045 | case R_PPC64_TPREL16_HIGHER: | |
7046 | case R_PPC64_TPREL16_HIGHERA: | |
7047 | case R_PPC64_TPREL16_HIGHEST: | |
7048 | case R_PPC64_TPREL16_HIGHESTA: | |
7049 | if (!info->shared) | |
7050 | return TRUE; | |
7051 | ||
7052 | case R_PPC64_TPREL64: | |
7053 | case R_PPC64_DTPMOD64: | |
7054 | case R_PPC64_DTPREL64: | |
7055 | case R_PPC64_ADDR64: | |
7056 | case R_PPC64_REL30: | |
7057 | case R_PPC64_REL32: | |
7058 | case R_PPC64_REL64: | |
7059 | case R_PPC64_ADDR14: | |
7060 | case R_PPC64_ADDR14_BRNTAKEN: | |
7061 | case R_PPC64_ADDR14_BRTAKEN: | |
7062 | case R_PPC64_ADDR16: | |
7063 | case R_PPC64_ADDR16_DS: | |
7064 | case R_PPC64_ADDR16_HA: | |
7065 | case R_PPC64_ADDR16_HI: | |
7066 | case R_PPC64_ADDR16_HIGHER: | |
7067 | case R_PPC64_ADDR16_HIGHERA: | |
7068 | case R_PPC64_ADDR16_HIGHEST: | |
7069 | case R_PPC64_ADDR16_HIGHESTA: | |
7070 | case R_PPC64_ADDR16_LO: | |
7071 | case R_PPC64_ADDR16_LO_DS: | |
7072 | case R_PPC64_ADDR24: | |
7073 | case R_PPC64_ADDR32: | |
7074 | case R_PPC64_UADDR16: | |
7075 | case R_PPC64_UADDR32: | |
7076 | case R_PPC64_UADDR64: | |
7077 | case R_PPC64_TOC: | |
7078 | break; | |
7079 | } | |
7080 | ||
7081 | if (local_syms != NULL) | |
7082 | { | |
7083 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7084 | bfd *ibfd = sec->owner; |
7085 | ||
7086 | r_symndx = ELF64_R_SYM (r_info); | |
7087 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7088 | return FALSE; | |
7089 | } | |
7090 | ||
7091 | if ((info->shared | |
1d483afe | 7092 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7093 | || (h != NULL |
198f1157 | 7094 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7095 | || h->root.type == bfd_link_hash_defweak |
7096 | || !h->def_regular)))) | |
7097 | || (ELIMINATE_COPY_RELOCS | |
7098 | && !info->shared | |
7099 | && h != NULL | |
7100 | && (h->root.type == bfd_link_hash_defweak | |
7101 | || !h->def_regular))) | |
7102 | ; | |
7103 | else | |
7104 | return TRUE; | |
7105 | ||
7106 | if (h != NULL) | |
6edfbbad | 7107 | { |
19e08130 AM |
7108 | struct elf_dyn_relocs *p; |
7109 | struct elf_dyn_relocs **pp; | |
7110 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7111 | ||
7112 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7113 | with local syms for a given section. Also, symbol flags are | |
7114 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7115 | report a dynreloc miscount. */ | |
7116 | if (*pp == NULL && info->gc_sections) | |
7117 | return TRUE; | |
7118 | ||
7119 | while ((p = *pp) != NULL) | |
60124e18 | 7120 | { |
19e08130 AM |
7121 | if (p->sec == sec) |
7122 | { | |
7123 | if (!must_be_dyn_reloc (info, r_type)) | |
7124 | p->pc_count -= 1; | |
7125 | p->count -= 1; | |
7126 | if (p->count == 0) | |
7127 | *pp = p->next; | |
7128 | return TRUE; | |
7129 | } | |
7130 | pp = &p->next; | |
60124e18 | 7131 | } |
6edfbbad | 7132 | } |
19e08130 AM |
7133 | else |
7134 | { | |
7135 | struct ppc_dyn_relocs *p; | |
7136 | struct ppc_dyn_relocs **pp; | |
7137 | void *vpp; | |
7138 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7139 | |
19e08130 AM |
7140 | if (local_syms == NULL) |
7141 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7142 | if (sym_sec == NULL) | |
7143 | sym_sec = sec; | |
c57da1a7 | 7144 | |
19e08130 AM |
7145 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7146 | pp = (struct ppc_dyn_relocs **) vpp; | |
7147 | ||
7148 | if (*pp == NULL && info->gc_sections) | |
7149 | return TRUE; | |
7150 | ||
7151 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7152 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7153 | { |
19e08130 AM |
7154 | if (p->sec == sec && p->ifunc == is_ifunc) |
7155 | { | |
7156 | p->count -= 1; | |
7157 | if (p->count == 0) | |
7158 | *pp = p->next; | |
7159 | return TRUE; | |
7160 | } | |
7161 | pp = &p->next; | |
8c1d1bb8 | 7162 | } |
8c1d1bb8 AM |
7163 | } |
7164 | ||
8de848d8 | 7165 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7166 | sec->owner, sec); |
8c1d1bb8 AM |
7167 | bfd_set_error (bfd_error_bad_value); |
7168 | return FALSE; | |
7169 | } | |
7170 | ||
754021d0 AM |
7171 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7172 | only remove those associated with functions in discarded link-once | |
7173 | sections, or weakly defined functions that have been overridden. It | |
7174 | would be possible to remove many more entries for statically linked | |
7175 | applications. */ | |
7176 | ||
b34976b6 | 7177 | bfd_boolean |
33c0ec9d | 7178 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
7179 | { |
7180 | bfd *ibfd; | |
754021d0 | 7181 | bfd_boolean some_edited = FALSE; |
3f764659 | 7182 | asection *need_pad = NULL; |
1e2f5b6e | 7183 | |
411e1bfb | 7184 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7185 | { |
7186 | asection *sec; | |
7187 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7188 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7189 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7190 | bfd_vma offset; |
74f0fb50 | 7191 | struct _opd_sec_data *opd; |
3f764659 JJ |
7192 | bfd_boolean need_edit, add_aux_fields; |
7193 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7194 | |
854b41e7 AM |
7195 | if (!is_ppc64_elf (ibfd)) |
7196 | continue; | |
7197 | ||
1e2f5b6e | 7198 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7199 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7200 | continue; |
7201 | ||
dbaa2011 | 7202 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7203 | continue; |
7204 | ||
1e2f5b6e AM |
7205 | if (sec->output_section == bfd_abs_section_ptr) |
7206 | continue; | |
7207 | ||
7208 | /* Look through the section relocs. */ | |
7209 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7210 | continue; | |
7211 | ||
6cdc0ccc | 7212 | local_syms = NULL; |
0ffa91dd | 7213 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7214 | |
7215 | /* Read the relocations. */ | |
4ce794b7 | 7216 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7217 | info->keep_memory); |
1e2f5b6e | 7218 | if (relstart == NULL) |
b34976b6 | 7219 | return FALSE; |
1e2f5b6e AM |
7220 | |
7221 | /* First run through the relocs to check they are sane, and to | |
7222 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7223 | need_edit = FALSE; |
3f764659 | 7224 | need_pad = sec; |
1e2f5b6e AM |
7225 | offset = 0; |
7226 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7227 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7228 | { |
04c9666a | 7229 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7230 | unsigned long r_symndx; |
7231 | asection *sym_sec; | |
7232 | struct elf_link_hash_entry *h; | |
7233 | Elf_Internal_Sym *sym; | |
7234 | ||
3f764659 | 7235 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7236 | only interested in the reloc pointing to a function entry |
7237 | point. */ | |
50bc7936 AM |
7238 | if (rel->r_offset != offset |
7239 | || rel + 1 >= relend | |
7240 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7241 | { |
7242 | /* If someone messes with .opd alignment then after a | |
7243 | "ld -r" we might have padding in the middle of .opd. | |
7244 | Also, there's nothing to prevent someone putting | |
7245 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7246 | optimization for them! */ |
3f764659 | 7247 | broken_opd: |
1e2f5b6e | 7248 | (*_bfd_error_handler) |
d003868e | 7249 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7250 | need_edit = FALSE; |
1e2f5b6e AM |
7251 | break; |
7252 | } | |
7253 | ||
50bc7936 AM |
7254 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7255 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7256 | { | |
7257 | (*_bfd_error_handler) | |
d003868e AM |
7258 | (_("%B: unexpected reloc type %u in .opd section"), |
7259 | ibfd, r_type); | |
50bc7936 AM |
7260 | need_edit = FALSE; |
7261 | break; | |
7262 | } | |
7263 | ||
1e2f5b6e | 7264 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7265 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7266 | r_symndx, ibfd)) | |
50bc7936 | 7267 | goto error_ret; |
1e2f5b6e AM |
7268 | |
7269 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7270 | { | |
411e1bfb AM |
7271 | const char *sym_name; |
7272 | if (h != NULL) | |
7273 | sym_name = h->root.root.string; | |
7274 | else | |
26c61ae5 L |
7275 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7276 | sym_sec); | |
411e1bfb | 7277 | |
1e2f5b6e | 7278 | (*_bfd_error_handler) |
d003868e AM |
7279 | (_("%B: undefined sym `%s' in .opd section"), |
7280 | ibfd, sym_name); | |
b34976b6 | 7281 | need_edit = FALSE; |
1e2f5b6e AM |
7282 | break; |
7283 | } | |
7284 | ||
51020317 AM |
7285 | /* opd entries are always for functions defined in the |
7286 | current input bfd. If the symbol isn't defined in the | |
7287 | input bfd, then we won't be using the function in this | |
7288 | bfd; It must be defined in a linkonce section in another | |
7289 | bfd, or is weak. It's also possible that we are | |
7290 | discarding the function due to a linker script /DISCARD/, | |
7291 | which we test for via the output_section. */ | |
7292 | if (sym_sec->owner != ibfd | |
7293 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7294 | need_edit = TRUE; |
1e2f5b6e | 7295 | |
50bc7936 | 7296 | rel += 2; |
3f764659 JJ |
7297 | if (rel == relend |
7298 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7299 | { | |
7300 | if (sec->size == offset + 24) | |
7301 | { | |
7302 | need_pad = NULL; | |
7303 | break; | |
7304 | } | |
7305 | if (rel == relend && sec->size == offset + 16) | |
7306 | { | |
7307 | cnt_16b++; | |
7308 | break; | |
7309 | } | |
7310 | goto broken_opd; | |
7311 | } | |
7312 | ||
7313 | if (rel->r_offset == offset + 24) | |
7314 | offset += 24; | |
7315 | else if (rel->r_offset != offset + 16) | |
7316 | goto broken_opd; | |
7317 | else if (rel + 1 < relend | |
7318 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7319 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7320 | { | |
7321 | offset += 16; | |
7322 | cnt_16b++; | |
7323 | } | |
7324 | else if (rel + 2 < relend | |
7325 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7326 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7327 | { | |
7328 | offset += 24; | |
7329 | rel += 1; | |
7330 | } | |
7331 | else | |
7332 | goto broken_opd; | |
1e2f5b6e AM |
7333 | } |
7334 | ||
3f764659 JJ |
7335 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7336 | ||
7337 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7338 | { |
7339 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7340 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7341 | bfd_byte *rptr, *wptr; |
983bddc8 | 7342 | bfd_byte *new_contents; |
b34976b6 | 7343 | bfd_boolean skip; |
3f764659 | 7344 | long opd_ent_size; |
74f0fb50 AM |
7345 | bfd_size_type amt; |
7346 | ||
983bddc8 | 7347 | new_contents = NULL; |
74f0fb50 AM |
7348 | amt = sec->size * sizeof (long) / 8; |
7349 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7350 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7351 | if (opd->adjust == NULL) |
7352 | return FALSE; | |
7353 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7354 | |
7355 | /* This seems a waste of time as input .opd sections are all | |
7356 | zeros as generated by gcc, but I suppose there's no reason | |
7357 | this will always be so. We might start putting something in | |
7358 | the third word of .opd entries. */ | |
7359 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7360 | { | |
eea6121a AM |
7361 | bfd_byte *loc; |
7362 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7363 | { |
eea6121a AM |
7364 | if (loc != NULL) |
7365 | free (loc); | |
50bc7936 | 7366 | error_ret: |
6cdc0ccc AM |
7367 | if (local_syms != NULL |
7368 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7369 | free (local_syms); | |
6cdc0ccc AM |
7370 | if (elf_section_data (sec)->relocs != relstart) |
7371 | free (relstart); | |
b34976b6 | 7372 | return FALSE; |
6cdc0ccc | 7373 | } |
1e2f5b6e AM |
7374 | sec->contents = loc; |
7375 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7376 | } | |
7377 | ||
7378 | elf_section_data (sec)->relocs = relstart; | |
7379 | ||
3f764659 | 7380 | new_contents = sec->contents; |
3f764659 JJ |
7381 | if (add_aux_fields) |
7382 | { | |
7383 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7384 | if (new_contents == NULL) | |
7385 | return FALSE; | |
7386 | need_pad = FALSE; | |
3f764659 | 7387 | } |
b4f4e59f AM |
7388 | wptr = new_contents; |
7389 | rptr = sec->contents; | |
3f764659 | 7390 | |
1e2f5b6e | 7391 | write_rel = relstart; |
b34976b6 | 7392 | skip = FALSE; |
1e2f5b6e | 7393 | offset = 0; |
3f764659 | 7394 | opd_ent_size = 0; |
1e2f5b6e AM |
7395 | for (rel = relstart; rel < relend; rel++) |
7396 | { | |
50bc7936 AM |
7397 | unsigned long r_symndx; |
7398 | asection *sym_sec; | |
7399 | struct elf_link_hash_entry *h; | |
7400 | Elf_Internal_Sym *sym; | |
7401 | ||
7402 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7403 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7404 | r_symndx, ibfd)) |
50bc7936 AM |
7405 | goto error_ret; |
7406 | ||
1e2f5b6e AM |
7407 | if (rel->r_offset == offset) |
7408 | { | |
50bc7936 | 7409 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7410 | |
7411 | /* See if the .opd entry is full 24 byte or | |
7412 | 16 byte (with fd_aux entry overlapped with next | |
7413 | fd_func). */ | |
7414 | opd_ent_size = 24; | |
7415 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7416 | || (rel + 3 < relend | |
7417 | && rel[2].r_offset == offset + 16 | |
7418 | && rel[3].r_offset == offset + 24 | |
7419 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7420 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7421 | opd_ent_size = 16; | |
7422 | ||
4025353c AM |
7423 | if (h != NULL |
7424 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7425 | { |
4dfe6ac6 NC |
7426 | struct ppc_link_hash_table *htab; |
7427 | ||
7428 | htab = ppc_hash_table (info); | |
7429 | if (htab != NULL) | |
7430 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7431 | htab); | |
c4f68ce3 AM |
7432 | if (fdh != NULL |
7433 | && fdh->elf.root.type != bfd_link_hash_defined | |
7434 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7435 | fdh = NULL; | |
7436 | } | |
1e2f5b6e | 7437 | |
51020317 AM |
7438 | skip = (sym_sec->owner != ibfd |
7439 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7440 | if (skip) |
7441 | { | |
4025353c | 7442 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7443 | { |
7444 | /* Arrange for the function descriptor sym | |
7445 | to be dropped. */ | |
d6fe2dc1 AM |
7446 | fdh->elf.root.u.def.value = 0; |
7447 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7448 | } |
74f0fb50 | 7449 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7450 | } |
7451 | else | |
1e2f5b6e AM |
7452 | { |
7453 | /* We'll be keeping this opd entry. */ | |
7454 | ||
4025353c | 7455 | if (fdh != NULL) |
1e2f5b6e | 7456 | { |
754021d0 AM |
7457 | /* Redefine the function descriptor symbol to |
7458 | this location in the opd section. It is | |
7459 | necessary to update the value here rather | |
7460 | than using an array of adjustments as we do | |
7461 | for local symbols, because various places | |
7462 | in the generic ELF code use the value | |
7463 | stored in u.def.value. */ | |
3f764659 | 7464 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7465 | fdh->adjust_done = 1; |
1e2f5b6e | 7466 | } |
754021d0 AM |
7467 | |
7468 | /* Local syms are a bit tricky. We could | |
7469 | tweak them as they can be cached, but | |
7470 | we'd need to look through the local syms | |
7471 | for the function descriptor sym which we | |
7472 | don't have at the moment. So keep an | |
7473 | array of adjustments. */ | |
74f0fb50 | 7474 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7475 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7476 | |
7477 | if (wptr != rptr) | |
3f764659 JJ |
7478 | memcpy (wptr, rptr, opd_ent_size); |
7479 | wptr += opd_ent_size; | |
7480 | if (add_aux_fields && opd_ent_size == 16) | |
7481 | { | |
7482 | memset (wptr, '\0', 8); | |
7483 | wptr += 8; | |
7484 | } | |
1e2f5b6e | 7485 | } |
3f764659 JJ |
7486 | rptr += opd_ent_size; |
7487 | offset += opd_ent_size; | |
1e2f5b6e AM |
7488 | } |
7489 | ||
50bc7936 AM |
7490 | if (skip) |
7491 | { | |
60124e18 AM |
7492 | if (!NO_OPD_RELOCS |
7493 | && !info->relocatable | |
18d944df | 7494 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7495 | NULL, h, sym)) |
8c1d1bb8 | 7496 | goto error_ret; |
50bc7936 AM |
7497 | } |
7498 | else | |
1e2f5b6e | 7499 | { |
50bc7936 AM |
7500 | /* We need to adjust any reloc offsets to point to the |
7501 | new opd entries. While we're at it, we may as well | |
7502 | remove redundant relocs. */ | |
74f0fb50 | 7503 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7504 | if (write_rel != rel) |
7505 | memcpy (write_rel, rel, sizeof (*rel)); | |
7506 | ++write_rel; | |
7507 | } | |
7508 | } | |
7509 | ||
3f764659 | 7510 | sec->size = wptr - new_contents; |
1e2f5b6e | 7511 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7512 | if (add_aux_fields) |
7513 | { | |
7514 | free (sec->contents); | |
7515 | sec->contents = new_contents; | |
7516 | } | |
7517 | ||
05bf9422 | 7518 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7519 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7520 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7521 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7522 | some_edited = TRUE; |
1e2f5b6e | 7523 | } |
6cdc0ccc | 7524 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7525 | free (relstart); |
6cdc0ccc | 7526 | |
411e1bfb AM |
7527 | if (local_syms != NULL |
7528 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7529 | { | |
7530 | if (!info->keep_memory) | |
7531 | free (local_syms); | |
7532 | else | |
7533 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7534 | } | |
7535 | } | |
7536 | ||
754021d0 AM |
7537 | if (some_edited) |
7538 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7539 | ||
3f764659 JJ |
7540 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7541 | long, add a 8 byte padding after it. */ | |
7542 | if (need_pad != NULL && !info->relocatable) | |
7543 | { | |
7544 | bfd_byte *p; | |
7545 | ||
7546 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7547 | { | |
7548 | BFD_ASSERT (need_pad->size > 0); | |
7549 | ||
7550 | p = bfd_malloc (need_pad->size + 8); | |
7551 | if (p == NULL) | |
7552 | return FALSE; | |
699733f6 | 7553 | |
3f764659 JJ |
7554 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7555 | p, 0, need_pad->size)) | |
7556 | return FALSE; | |
7557 | ||
7558 | need_pad->contents = p; | |
7559 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7560 | } | |
7561 | else | |
7562 | { | |
7563 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7564 | if (p == NULL) | |
7565 | return FALSE; | |
7566 | ||
7567 | need_pad->contents = p; | |
7568 | } | |
7569 | ||
7570 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7571 | need_pad->size += 8; | |
7572 | } | |
7573 | ||
411e1bfb AM |
7574 | return TRUE; |
7575 | } | |
7576 | ||
e1918d23 | 7577 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7578 | |
e1918d23 | 7579 | asection * |
33c0ec9d AM |
7580 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7581 | int no_tls_get_addr_opt, | |
7582 | int *no_multi_toc) | |
411e1bfb | 7583 | { |
411e1bfb AM |
7584 | struct ppc_link_hash_table *htab; |
7585 | ||
411e1bfb | 7586 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7587 | if (htab == NULL) |
7588 | return NULL; | |
7589 | ||
33c0ec9d AM |
7590 | if (*no_multi_toc) |
7591 | htab->do_multi_toc = 0; | |
7592 | else if (!htab->do_multi_toc) | |
7593 | *no_multi_toc = 1; | |
7594 | ||
3a71aa26 AM |
7595 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7596 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7597 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7598 | /* Move dynamic linking info to the function descriptor sym. */ |
7599 | if (htab->tls_get_addr != NULL) | |
7600 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7601 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7602 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7603 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7604 | if (!no_tls_get_addr_opt) |
7605 | { | |
7606 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7607 | ||
7608 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7609 | FALSE, FALSE, TRUE); | |
7610 | if (opt != NULL) | |
7611 | func_desc_adjust (opt, info); | |
7612 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7613 | FALSE, FALSE, TRUE); | |
7614 | if (opt_fd != NULL | |
7615 | && (opt_fd->root.type == bfd_link_hash_defined | |
7616 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7617 | { | |
7618 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7619 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7620 | be calling __tls_get_addr via a plt call stub, then | |
7621 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7622 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7623 | if (htab->elf.dynamic_sections_created | |
7624 | && tga_fd != NULL | |
7625 | && (tga_fd->type == STT_FUNC | |
7626 | || tga_fd->needs_plt) | |
7627 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7628 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7629 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7630 | { | |
7631 | struct plt_entry *ent; | |
7632 | ||
7633 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7634 | if (ent->plt.refcount > 0) | |
7635 | break; | |
7636 | if (ent != NULL) | |
7637 | { | |
7638 | tga_fd->root.type = bfd_link_hash_indirect; | |
7639 | tga_fd->root.u.i.link = &opt_fd->root; | |
7640 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7641 | if (opt_fd->dynindx != -1) | |
7642 | { | |
7643 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7644 | opt_fd->dynindx = -1; | |
7645 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7646 | opt_fd->dynstr_index); | |
7647 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7648 | return NULL; |
a7f2871e AM |
7649 | } |
7650 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7651 | tga = &htab->tls_get_addr->elf; | |
7652 | if (opt != NULL && tga != NULL) | |
7653 | { | |
7654 | tga->root.type = bfd_link_hash_indirect; | |
7655 | tga->root.u.i.link = &opt->root; | |
7656 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7657 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7658 | tga->forced_local); | |
7659 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7660 | } | |
7661 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7662 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7663 | if (htab->tls_get_addr != NULL) | |
7664 | { | |
7665 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7666 | htab->tls_get_addr->is_func = 1; | |
7667 | } | |
7668 | } | |
7669 | } | |
7670 | } | |
7671 | else | |
7672 | no_tls_get_addr_opt = TRUE; | |
7673 | } | |
7674 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 7675 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7676 | } |
8387904d | 7677 | |
3a71aa26 AM |
7678 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7679 | HASH1 or HASH2. */ | |
8387904d | 7680 | |
3a71aa26 AM |
7681 | static bfd_boolean |
7682 | branch_reloc_hash_match (const bfd *ibfd, | |
7683 | const Elf_Internal_Rela *rel, | |
7684 | const struct ppc_link_hash_entry *hash1, | |
7685 | const struct ppc_link_hash_entry *hash2) | |
7686 | { | |
7687 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7688 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7689 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7690 | ||
e054468f | 7691 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7692 | { |
3a71aa26 AM |
7693 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7694 | struct elf_link_hash_entry *h; | |
8387904d | 7695 | |
3a71aa26 | 7696 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7697 | h = elf_follow_link (h); |
3a71aa26 AM |
7698 | if (h == &hash1->elf || h == &hash2->elf) |
7699 | return TRUE; | |
a48ebf4d | 7700 | } |
3a71aa26 | 7701 | return FALSE; |
951fd09b | 7702 | } |
411e1bfb | 7703 | |
951fd09b AM |
7704 | /* Run through all the TLS relocs looking for optimization |
7705 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7706 | a preliminary section layout so that we know the TLS segment | |
7707 | offsets. We can't optimize earlier because some optimizations need | |
7708 | to know the tp offset, and we need to optimize before allocating | |
7709 | dynamic relocations. */ | |
7710 | ||
7711 | bfd_boolean | |
33c0ec9d | 7712 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7713 | { |
7714 | bfd *ibfd; | |
7715 | asection *sec; | |
7716 | struct ppc_link_hash_table *htab; | |
663a1470 | 7717 | unsigned char *toc_ref; |
102890f0 | 7718 | int pass; |
951fd09b | 7719 | |
1d483afe | 7720 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7721 | return TRUE; |
7722 | ||
951fd09b | 7723 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7724 | if (htab == NULL) |
7725 | return FALSE; | |
7726 | ||
663a1470 AM |
7727 | /* Make two passes over the relocs. On the first pass, mark toc |
7728 | entries involved with tls relocs, and check that tls relocs | |
7729 | involved in setting up a tls_get_addr call are indeed followed by | |
7730 | such a call. If they are not, we can't do any tls optimization. | |
7731 | On the second pass twiddle tls_mask flags to notify | |
7732 | relocate_section that optimization can be done, and adjust got | |
7733 | and plt refcounts. */ | |
7734 | toc_ref = NULL; | |
7735 | for (pass = 0; pass < 2; ++pass) | |
7736 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7737 | { | |
7738 | Elf_Internal_Sym *locsyms = NULL; | |
7739 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7740 | ||
102890f0 AM |
7741 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7742 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7743 | { | |
7744 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7745 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7746 | |
102890f0 AM |
7747 | /* Read the relocations. */ |
7748 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7749 | info->keep_memory); | |
7750 | if (relstart == NULL) | |
7751 | return FALSE; | |
411e1bfb | 7752 | |
102890f0 AM |
7753 | relend = relstart + sec->reloc_count; |
7754 | for (rel = relstart; rel < relend; rel++) | |
7755 | { | |
7756 | enum elf_ppc64_reloc_type r_type; | |
7757 | unsigned long r_symndx; | |
7758 | struct elf_link_hash_entry *h; | |
7759 | Elf_Internal_Sym *sym; | |
7760 | asection *sym_sec; | |
f961d9dd AM |
7761 | unsigned char *tls_mask; |
7762 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7763 | bfd_vma value; |
7764 | bfd_boolean ok_tprel, is_local; | |
7765 | long toc_ref_index = 0; | |
7766 | int expecting_tls_get_addr = 0; | |
663a1470 | 7767 | bfd_boolean ret = FALSE; |
411e1bfb | 7768 | |
102890f0 AM |
7769 | r_symndx = ELF64_R_SYM (rel->r_info); |
7770 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7771 | r_symndx, ibfd)) | |
7772 | { | |
7773 | err_free_rel: | |
7774 | if (elf_section_data (sec)->relocs != relstart) | |
7775 | free (relstart); | |
7776 | if (toc_ref != NULL) | |
7777 | free (toc_ref); | |
7778 | if (locsyms != NULL | |
0ffa91dd | 7779 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7780 | != (unsigned char *) locsyms)) |
7781 | free (locsyms); | |
663a1470 | 7782 | return ret; |
102890f0 | 7783 | } |
411e1bfb | 7784 | |
102890f0 AM |
7785 | if (h != NULL) |
7786 | { | |
766bc656 AM |
7787 | if (h->root.type == bfd_link_hash_defined |
7788 | || h->root.type == bfd_link_hash_defweak) | |
7789 | value = h->root.u.def.value; | |
7790 | else if (h->root.type == bfd_link_hash_undefweak) | |
7791 | value = 0; | |
7792 | else | |
663a1470 AM |
7793 | { |
7794 | found_tls_get_addr_arg = 0; | |
7795 | continue; | |
7796 | } | |
102890f0 AM |
7797 | } |
7798 | else | |
7799 | /* Symbols referenced by TLS relocs must be of type | |
7800 | STT_TLS. So no need for .opd local sym adjust. */ | |
7801 | value = sym->st_value; | |
7802 | ||
7803 | ok_tprel = FALSE; | |
7804 | is_local = FALSE; | |
7805 | if (h == NULL | |
7806 | || !h->def_dynamic) | |
7807 | { | |
7808 | is_local = TRUE; | |
766bc656 AM |
7809 | if (h != NULL |
7810 | && h->root.type == bfd_link_hash_undefweak) | |
7811 | ok_tprel = TRUE; | |
7812 | else | |
7813 | { | |
7814 | value += sym_sec->output_offset; | |
7815 | value += sym_sec->output_section->vma; | |
7816 | value -= htab->elf.tls_sec->vma; | |
7817 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7818 | < (bfd_vma) 1 << 32); | |
7819 | } | |
102890f0 | 7820 | } |
951fd09b | 7821 | |
102890f0 | 7822 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7823 | /* If this section has old-style __tls_get_addr calls |
7824 | without marker relocs, then check that each | |
7825 | __tls_get_addr call reloc is preceded by a reloc | |
7826 | that conceivably belongs to the __tls_get_addr arg | |
7827 | setup insn. If we don't find matching arg setup | |
7828 | relocs, don't do any tls optimization. */ | |
7829 | if (pass == 0 | |
7830 | && sec->has_tls_get_addr_call | |
7831 | && h != NULL | |
7832 | && (h == &htab->tls_get_addr->elf | |
7833 | || h == &htab->tls_get_addr_fd->elf) | |
7834 | && !found_tls_get_addr_arg | |
7835 | && is_branch_reloc (r_type)) | |
7836 | { | |
25f53a85 | 7837 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7838 | "TLS optimization disabled\n"), |
7839 | ibfd, sec, rel->r_offset); | |
7840 | ret = TRUE; | |
7841 | goto err_free_rel; | |
7842 | } | |
7843 | ||
7844 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7845 | switch (r_type) |
7846 | { | |
7847 | case R_PPC64_GOT_TLSLD16: | |
7848 | case R_PPC64_GOT_TLSLD16_LO: | |
7849 | expecting_tls_get_addr = 1; | |
663a1470 | 7850 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7851 | /* Fall thru */ |
7852 | ||
7853 | case R_PPC64_GOT_TLSLD16_HI: | |
7854 | case R_PPC64_GOT_TLSLD16_HA: | |
7855 | /* These relocs should never be against a symbol | |
7856 | defined in a shared lib. Leave them alone if | |
7857 | that turns out to be the case. */ | |
7858 | if (!is_local) | |
7859 | continue; | |
411e1bfb | 7860 | |
102890f0 | 7861 | /* LD -> LE */ |
411e1bfb | 7862 | tls_set = 0; |
102890f0 AM |
7863 | tls_clear = TLS_LD; |
7864 | tls_type = TLS_TLS | TLS_LD; | |
7865 | break; | |
411e1bfb | 7866 | |
102890f0 AM |
7867 | case R_PPC64_GOT_TLSGD16: |
7868 | case R_PPC64_GOT_TLSGD16_LO: | |
7869 | expecting_tls_get_addr = 1; | |
663a1470 | 7870 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7871 | /* Fall thru */ |
7872 | ||
7873 | case R_PPC64_GOT_TLSGD16_HI: | |
7874 | case R_PPC64_GOT_TLSGD16_HA: | |
7875 | if (ok_tprel) | |
7876 | /* GD -> LE */ | |
411e1bfb | 7877 | tls_set = 0; |
102890f0 AM |
7878 | else |
7879 | /* GD -> IE */ | |
7880 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7881 | tls_clear = TLS_GD; | |
7882 | tls_type = TLS_TLS | TLS_GD; | |
7883 | break; | |
7884 | ||
7885 | case R_PPC64_GOT_TPREL16_DS: | |
7886 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7887 | case R_PPC64_GOT_TPREL16_HI: | |
7888 | case R_PPC64_GOT_TPREL16_HA: | |
7889 | if (ok_tprel) | |
7890 | { | |
7891 | /* IE -> LE */ | |
7892 | tls_set = 0; | |
7893 | tls_clear = TLS_TPREL; | |
7894 | tls_type = TLS_TLS | TLS_TPREL; | |
7895 | break; | |
7896 | } | |
411e1bfb AM |
7897 | continue; |
7898 | ||
727fc41e AM |
7899 | case R_PPC64_TLSGD: |
7900 | case R_PPC64_TLSLD: | |
663a1470 AM |
7901 | found_tls_get_addr_arg = 1; |
7902 | /* Fall thru */ | |
7903 | ||
7904 | case R_PPC64_TLS: | |
7905 | case R_PPC64_TOC16: | |
7906 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7907 | if (sym_sec == NULL || sym_sec != toc) |
7908 | continue; | |
7909 | ||
7910 | /* Mark this toc entry as referenced by a TLS | |
7911 | code sequence. We can do that now in the | |
7912 | case of R_PPC64_TLS, and after checking for | |
7913 | tls_get_addr for the TOC16 relocs. */ | |
7914 | if (toc_ref == NULL) | |
663a1470 AM |
7915 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
7916 | if (toc_ref == NULL) | |
7917 | goto err_free_rel; | |
7918 | ||
102890f0 AM |
7919 | if (h != NULL) |
7920 | value = h->root.u.def.value; | |
7921 | else | |
7922 | value = sym->st_value; | |
7923 | value += rel->r_addend; | |
7924 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 7925 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7926 | if (r_type == R_PPC64_TLS |
7927 | || r_type == R_PPC64_TLSGD | |
7928 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7929 | { |
7930 | toc_ref[toc_ref_index] = 1; | |
7931 | continue; | |
7932 | } | |
7933 | ||
7934 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7935 | continue; | |
7936 | ||
7937 | tls_set = 0; | |
7938 | tls_clear = 0; | |
7939 | expecting_tls_get_addr = 2; | |
7940 | break; | |
7941 | ||
7942 | case R_PPC64_TPREL64: | |
7943 | if (pass == 0 | |
7944 | || sec != toc | |
7945 | || toc_ref == NULL | |
663a1470 | 7946 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7947 | continue; |
7948 | if (ok_tprel) | |
7949 | { | |
7950 | /* IE -> LE */ | |
7951 | tls_set = TLS_EXPLICIT; | |
7952 | tls_clear = TLS_TPREL; | |
7953 | break; | |
7954 | } | |
7955 | continue; | |
7956 | ||
7957 | case R_PPC64_DTPMOD64: | |
7958 | if (pass == 0 | |
7959 | || sec != toc | |
7960 | || toc_ref == NULL | |
663a1470 | 7961 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7962 | continue; |
7963 | if (rel + 1 < relend | |
7964 | && (rel[1].r_info | |
7965 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7966 | && rel[1].r_offset == rel->r_offset + 8) | |
7967 | { | |
7968 | if (ok_tprel) | |
7969 | /* GD -> LE */ | |
7970 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7971 | else | |
7972 | /* GD -> IE */ | |
7973 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7974 | tls_clear = TLS_GD; | |
7975 | } | |
7976 | else | |
7977 | { | |
7978 | if (!is_local) | |
7979 | continue; | |
7980 | ||
7981 | /* LD -> LE */ | |
7982 | tls_set = TLS_EXPLICIT; | |
7983 | tls_clear = TLS_LD; | |
7984 | } | |
7985 | break; | |
7986 | ||
7987 | default: | |
7988 | continue; | |
7989 | } | |
7990 | ||
7991 | if (pass == 0) | |
7992 | { | |
727fc41e AM |
7993 | if (!expecting_tls_get_addr |
7994 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7995 | continue; |
7996 | ||
3a71aa26 AM |
7997 | if (rel + 1 < relend |
7998 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7999 | htab->tls_get_addr, | |
8000 | htab->tls_get_addr_fd)) | |
102890f0 | 8001 | { |
3a71aa26 | 8002 | if (expecting_tls_get_addr == 2) |
102890f0 | 8003 | { |
3a71aa26 | 8004 | /* Check for toc tls entries. */ |
f961d9dd | 8005 | unsigned char *toc_tls; |
3a71aa26 AM |
8006 | int retval; |
8007 | ||
8008 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8009 | &locsyms, | |
8010 | rel, ibfd); | |
8011 | if (retval == 0) | |
8012 | goto err_free_rel; | |
663a1470 AM |
8013 | if (toc_tls != NULL) |
8014 | { | |
8015 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8016 | found_tls_get_addr_arg = 1; | |
8017 | if (retval > 1) | |
8018 | toc_ref[toc_ref_index] = 1; | |
8019 | } | |
102890f0 | 8020 | } |
3a71aa26 | 8021 | continue; |
102890f0 AM |
8022 | } |
8023 | ||
8024 | if (expecting_tls_get_addr != 1) | |
8025 | continue; | |
8026 | ||
8027 | /* Uh oh, we didn't find the expected call. We | |
8028 | could just mark this symbol to exclude it | |
8029 | from tls optimization but it's safer to skip | |
663a1470 | 8030 | the entire optimization. */ |
25f53a85 | 8031 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8032 | "TLS optimization disabled\n"), |
8033 | ibfd, sec, rel->r_offset); | |
8034 | ret = TRUE; | |
8035 | goto err_free_rel; | |
102890f0 AM |
8036 | } |
8037 | ||
85f7a9cb | 8038 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8039 | { |
8040 | struct plt_entry *ent; | |
8041 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8042 | ent != NULL; | |
8043 | ent = ent->next) | |
8044 | if (ent->addend == 0) | |
411e1bfb | 8045 | { |
102890f0 | 8046 | if (ent->plt.refcount > 0) |
30038c59 | 8047 | { |
102890f0 AM |
8048 | ent->plt.refcount -= 1; |
8049 | expecting_tls_get_addr = 0; | |
30038c59 | 8050 | } |
102890f0 | 8051 | break; |
411e1bfb | 8052 | } |
102890f0 | 8053 | } |
411e1bfb | 8054 | |
85f7a9cb | 8055 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8056 | { |
8057 | struct plt_entry *ent; | |
8058 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8059 | ent != NULL; | |
8060 | ent = ent->next) | |
8061 | if (ent->addend == 0) | |
411e1bfb | 8062 | { |
102890f0 AM |
8063 | if (ent->plt.refcount > 0) |
8064 | ent->plt.refcount -= 1; | |
8065 | break; | |
411e1bfb | 8066 | } |
102890f0 | 8067 | } |
411e1bfb | 8068 | |
102890f0 | 8069 | if (tls_clear == 0) |
30038c59 AM |
8070 | continue; |
8071 | ||
102890f0 AM |
8072 | if ((tls_set & TLS_EXPLICIT) == 0) |
8073 | { | |
8074 | struct got_entry *ent; | |
411e1bfb | 8075 | |
102890f0 AM |
8076 | /* Adjust got entry for this reloc. */ |
8077 | if (h != NULL) | |
8078 | ent = h->got.glist; | |
8079 | else | |
8080 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8081 | |
102890f0 AM |
8082 | for (; ent != NULL; ent = ent->next) |
8083 | if (ent->addend == rel->r_addend | |
8084 | && ent->owner == ibfd | |
8085 | && ent->tls_type == tls_type) | |
8086 | break; | |
8087 | if (ent == NULL) | |
8088 | abort (); | |
411e1bfb | 8089 | |
102890f0 AM |
8090 | if (tls_set == 0) |
8091 | { | |
8092 | /* We managed to get rid of a got entry. */ | |
8093 | if (ent->got.refcount > 0) | |
8094 | ent->got.refcount -= 1; | |
8095 | } | |
8096 | } | |
8097 | else | |
8098 | { | |
8099 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8100 | we'll lose one or two dyn relocs. */ | |
8101 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8102 | NULL, h, sym)) |
102890f0 | 8103 | return FALSE; |
411e1bfb | 8104 | |
102890f0 AM |
8105 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8106 | { | |
8107 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8108 | NULL, h, sym)) |
102890f0 AM |
8109 | return FALSE; |
8110 | } | |
8111 | } | |
411e1bfb | 8112 | |
102890f0 AM |
8113 | *tls_mask |= tls_set; |
8114 | *tls_mask &= ~tls_clear; | |
8115 | } | |
8c1d1bb8 | 8116 | |
102890f0 AM |
8117 | if (elf_section_data (sec)->relocs != relstart) |
8118 | free (relstart); | |
8119 | } | |
411e1bfb | 8120 | |
663a1470 AM |
8121 | if (locsyms != NULL |
8122 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8123 | { | |
8124 | if (!info->keep_memory) | |
8125 | free (locsyms); | |
8126 | else | |
8127 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8128 | } | |
8129 | } | |
411e1bfb | 8130 | |
663a1470 AM |
8131 | if (toc_ref != NULL) |
8132 | free (toc_ref); | |
b34976b6 | 8133 | return TRUE; |
1e2f5b6e | 8134 | } |
b34976b6 | 8135 | |
c5614fa4 AM |
8136 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8137 | the values of any global symbols in a toc section that has been | |
8138 | edited. Globals in toc sections should be a rarity, so this function | |
8139 | sets a flag if any are found in toc sections other than the one just | |
8140 | edited, so that futher hash table traversals can be avoided. */ | |
8141 | ||
8142 | struct adjust_toc_info | |
8143 | { | |
8144 | asection *toc; | |
8145 | unsigned long *skip; | |
8146 | bfd_boolean global_toc_syms; | |
8147 | }; | |
8148 | ||
ba761f19 AM |
8149 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8150 | ||
c5614fa4 AM |
8151 | static bfd_boolean |
8152 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8153 | { | |
8154 | struct ppc_link_hash_entry *eh; | |
8155 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8156 | unsigned long i; |
c5614fa4 | 8157 | |
c5614fa4 AM |
8158 | if (h->root.type != bfd_link_hash_defined |
8159 | && h->root.type != bfd_link_hash_defweak) | |
8160 | return TRUE; | |
8161 | ||
8162 | eh = (struct ppc_link_hash_entry *) h; | |
8163 | if (eh->adjust_done) | |
8164 | return TRUE; | |
8165 | ||
8166 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8167 | { | |
854b41e7 AM |
8168 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8169 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8170 | else |
854b41e7 AM |
8171 | i = eh->elf.root.u.def.value >> 3; |
8172 | ||
ba761f19 | 8173 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8174 | { |
8175 | (*_bfd_error_handler) | |
854b41e7 AM |
8176 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8177 | do | |
8178 | ++i; | |
ba761f19 | 8179 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8180 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8181 | } |
854b41e7 AM |
8182 | |
8183 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8184 | eh->adjust_done = 1; |
8185 | } | |
8186 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8187 | toc_inf->global_toc_syms = TRUE; | |
8188 | ||
8189 | return TRUE; | |
8190 | } | |
8191 | ||
560c8763 AM |
8192 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8193 | ||
8194 | static bfd_boolean | |
8195 | ok_lo_toc_insn (unsigned int insn) | |
8196 | { | |
8197 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8198 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8199 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8200 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8201 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8202 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8203 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8204 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8205 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8206 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8207 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8208 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8209 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8210 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8211 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8212 | && (insn & 3) != 1) | |
8213 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8214 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8215 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8216 | } | |
8217 | ||
c5614fa4 AM |
8218 | /* Examine all relocs referencing .toc sections in order to remove |
8219 | unused .toc entries. */ | |
8220 | ||
8221 | bfd_boolean | |
33c0ec9d | 8222 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8223 | { |
8224 | bfd *ibfd; | |
8225 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8226 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8227 | |
67f0cbdb | 8228 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8229 | toc_inf.global_toc_syms = TRUE; |
8230 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8231 | { | |
8232 | asection *toc, *sec; | |
8233 | Elf_Internal_Shdr *symtab_hdr; | |
8234 | Elf_Internal_Sym *local_syms; | |
425b145b | 8235 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8236 | unsigned long *skip, *drop; |
8237 | unsigned char *used; | |
8238 | unsigned char *keep, last, some_unused; | |
8239 | ||
854b41e7 AM |
8240 | if (!is_ppc64_elf (ibfd)) |
8241 | continue; | |
8242 | ||
c5614fa4 AM |
8243 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8244 | if (toc == NULL | |
92b7a70f | 8245 | || toc->size == 0 |
dbaa2011 AM |
8246 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8247 | || discarded_section (toc)) | |
c5614fa4 AM |
8248 | continue; |
8249 | ||
425b145b | 8250 | toc_relocs = NULL; |
c5614fa4 | 8251 | local_syms = NULL; |
0ffa91dd | 8252 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8253 | |
8254 | /* Look at sections dropped from the final link. */ | |
8255 | skip = NULL; | |
8256 | relstart = NULL; | |
8257 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8258 | { | |
8259 | if (sec->reloc_count == 0 | |
dbaa2011 | 8260 | || !discarded_section (sec) |
c5614fa4 AM |
8261 | || get_opd_info (sec) |
8262 | || (sec->flags & SEC_ALLOC) == 0 | |
8263 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8264 | continue; | |
8265 | ||
8266 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8267 | if (relstart == NULL) | |
8268 | goto error_ret; | |
8269 | ||
8270 | /* Run through the relocs to see which toc entries might be | |
8271 | unused. */ | |
8272 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8273 | { | |
8274 | enum elf_ppc64_reloc_type r_type; | |
8275 | unsigned long r_symndx; | |
8276 | asection *sym_sec; | |
8277 | struct elf_link_hash_entry *h; | |
8278 | Elf_Internal_Sym *sym; | |
8279 | bfd_vma val; | |
8280 | ||
8281 | r_type = ELF64_R_TYPE (rel->r_info); | |
8282 | switch (r_type) | |
8283 | { | |
8284 | default: | |
8285 | continue; | |
8286 | ||
8287 | case R_PPC64_TOC16: | |
8288 | case R_PPC64_TOC16_LO: | |
8289 | case R_PPC64_TOC16_HI: | |
8290 | case R_PPC64_TOC16_HA: | |
8291 | case R_PPC64_TOC16_DS: | |
8292 | case R_PPC64_TOC16_LO_DS: | |
8293 | break; | |
8294 | } | |
8295 | ||
8296 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8297 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8298 | r_symndx, ibfd)) | |
8299 | goto error_ret; | |
8300 | ||
8301 | if (sym_sec != toc) | |
8302 | continue; | |
8303 | ||
8304 | if (h != NULL) | |
8305 | val = h->root.u.def.value; | |
8306 | else | |
8307 | val = sym->st_value; | |
8308 | val += rel->r_addend; | |
8309 | ||
8310 | if (val >= toc->size) | |
8311 | continue; | |
8312 | ||
8313 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8314 | If not, don't mark as unused. */ | |
8315 | if (val & 7) | |
8316 | continue; | |
8317 | ||
8318 | if (skip == NULL) | |
8319 | { | |
854b41e7 | 8320 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8321 | if (skip == NULL) |
8322 | goto error_ret; | |
8323 | } | |
8324 | ||
ba761f19 | 8325 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8326 | } |
8327 | ||
8328 | if (elf_section_data (sec)->relocs != relstart) | |
8329 | free (relstart); | |
8330 | } | |
8331 | ||
ba761f19 AM |
8332 | /* For largetoc loads of address constants, we can convert |
8333 | . addis rx,2,addr@got@ha | |
8334 | . ld ry,addr@got@l(rx) | |
8335 | to | |
8336 | . addis rx,2,addr@toc@ha | |
8337 | . addi ry,rx,addr@toc@l | |
8338 | when addr is within 2G of the toc pointer. This then means | |
8339 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8340 | |
ba761f19 AM |
8341 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8342 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8343 | && toc->reloc_count != 0) | |
8344 | { | |
8345 | /* Read toc relocs. */ | |
425b145b AM |
8346 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8347 | info->keep_memory); | |
8348 | if (toc_relocs == NULL) | |
ba761f19 AM |
8349 | goto error_ret; |
8350 | ||
425b145b | 8351 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8352 | { |
8353 | enum elf_ppc64_reloc_type r_type; | |
8354 | unsigned long r_symndx; | |
8355 | asection *sym_sec; | |
8356 | struct elf_link_hash_entry *h; | |
8357 | Elf_Internal_Sym *sym; | |
8358 | bfd_vma val, addr; | |
8359 | ||
8360 | r_type = ELF64_R_TYPE (rel->r_info); | |
8361 | if (r_type != R_PPC64_ADDR64) | |
8362 | continue; | |
8363 | ||
8364 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8365 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8366 | r_symndx, ibfd)) | |
8367 | goto error_ret; | |
8368 | ||
425b145b | 8369 | if (sym_sec == NULL |
dbaa2011 | 8370 | || discarded_section (sym_sec)) |
425b145b AM |
8371 | continue; |
8372 | ||
726d3ab0 | 8373 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
ba761f19 AM |
8374 | continue; |
8375 | ||
8376 | if (h != NULL) | |
bddc25c9 AM |
8377 | { |
8378 | if (h->type == STT_GNU_IFUNC) | |
8379 | continue; | |
8380 | val = h->root.u.def.value; | |
8381 | } | |
ba761f19 | 8382 | else |
bddc25c9 AM |
8383 | { |
8384 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8385 | continue; | |
8386 | val = sym->st_value; | |
8387 | } | |
ba761f19 AM |
8388 | val += rel->r_addend; |
8389 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8390 | ||
8391 | /* We don't yet know the exact toc pointer value, but we | |
8392 | know it will be somewhere in the toc section. Don't | |
8393 | optimize if the difference from any possible toc | |
8394 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8395 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8396 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8397 | continue; | |
8398 | ||
8399 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8400 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8401 | continue; | |
8402 | ||
8403 | if (skip == NULL) | |
8404 | { | |
8405 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8406 | if (skip == NULL) | |
8407 | goto error_ret; | |
8408 | } | |
8409 | ||
8410 | skip[rel->r_offset >> 3] | |
425b145b | 8411 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8412 | } |
ba761f19 AM |
8413 | } |
8414 | ||
c5614fa4 AM |
8415 | if (skip == NULL) |
8416 | continue; | |
8417 | ||
8418 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8419 | if (used == NULL) | |
8420 | { | |
8421 | error_ret: | |
8422 | if (local_syms != NULL | |
8423 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8424 | free (local_syms); | |
8425 | if (sec != NULL | |
8426 | && relstart != NULL | |
8427 | && elf_section_data (sec)->relocs != relstart) | |
8428 | free (relstart); | |
425b145b AM |
8429 | if (toc_relocs != NULL |
8430 | && elf_section_data (toc)->relocs != toc_relocs) | |
8431 | free (toc_relocs); | |
c5614fa4 AM |
8432 | if (skip != NULL) |
8433 | free (skip); | |
8434 | return FALSE; | |
8435 | } | |
8436 | ||
30038c59 AM |
8437 | /* Now check all kept sections that might reference the toc. |
8438 | Check the toc itself last. */ | |
8439 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8440 | : ibfd->sections); | |
c5614fa4 | 8441 | sec != NULL; |
c5614fa4 | 8442 | sec = (sec == toc ? NULL |
c5614fa4 | 8443 | : sec->next == NULL ? toc |
30038c59 | 8444 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8445 | : sec->next)) |
8446 | { | |
8447 | int repeat; | |
8448 | ||
8449 | if (sec->reloc_count == 0 | |
dbaa2011 | 8450 | || discarded_section (sec) |
c5614fa4 AM |
8451 | || get_opd_info (sec) |
8452 | || (sec->flags & SEC_ALLOC) == 0 | |
8453 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8454 | continue; | |
8455 | ||
854b41e7 AM |
8456 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8457 | info->keep_memory); | |
c5614fa4 AM |
8458 | if (relstart == NULL) |
8459 | goto error_ret; | |
8460 | ||
8461 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8462 | do |
d4f1ee75 AM |
8463 | { |
8464 | repeat = 0; | |
8465 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8466 | { | |
8467 | enum elf_ppc64_reloc_type r_type; | |
8468 | unsigned long r_symndx; | |
8469 | asection *sym_sec; | |
8470 | struct elf_link_hash_entry *h; | |
8471 | Elf_Internal_Sym *sym; | |
8472 | bfd_vma val; | |
8473 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8474 | |
d4f1ee75 AM |
8475 | r_type = ELF64_R_TYPE (rel->r_info); |
8476 | switch (r_type) | |
8477 | { | |
8478 | default: | |
8479 | insn_check = no_check; | |
8480 | break; | |
98528052 | 8481 | |
d4f1ee75 AM |
8482 | case R_PPC64_GOT_TLSLD16_HA: |
8483 | case R_PPC64_GOT_TLSGD16_HA: | |
8484 | case R_PPC64_GOT_TPREL16_HA: | |
8485 | case R_PPC64_GOT_DTPREL16_HA: | |
8486 | case R_PPC64_GOT16_HA: | |
8487 | case R_PPC64_TOC16_HA: | |
8488 | insn_check = check_ha; | |
8489 | break; | |
98528052 | 8490 | |
d4f1ee75 AM |
8491 | case R_PPC64_GOT_TLSLD16_LO: |
8492 | case R_PPC64_GOT_TLSGD16_LO: | |
8493 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8494 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8495 | case R_PPC64_GOT16_LO: | |
8496 | case R_PPC64_GOT16_LO_DS: | |
8497 | case R_PPC64_TOC16_LO: | |
8498 | case R_PPC64_TOC16_LO_DS: | |
8499 | insn_check = check_lo; | |
8500 | break; | |
8501 | } | |
560c8763 | 8502 | |
d4f1ee75 AM |
8503 | if (insn_check != no_check) |
8504 | { | |
8505 | bfd_vma off = rel->r_offset & ~3; | |
8506 | unsigned char buf[4]; | |
8507 | unsigned int insn; | |
c5614fa4 | 8508 | |
d4f1ee75 AM |
8509 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8510 | { | |
8511 | free (used); | |
8512 | goto error_ret; | |
8513 | } | |
8514 | insn = bfd_get_32 (ibfd, buf); | |
8515 | if (insn_check == check_lo | |
8516 | ? !ok_lo_toc_insn (insn) | |
8517 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8518 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8519 | { | |
8520 | char str[12]; | |
8521 | ||
8522 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8523 | sprintf (str, "%#08x", insn); | |
8524 | info->callbacks->einfo | |
8525 | (_("%P: %H: toc optimization is not supported for" | |
8526 | " %s instruction.\n"), | |
8527 | ibfd, sec, rel->r_offset & ~3, str); | |
8528 | } | |
8529 | } | |
c5614fa4 | 8530 | |
d4f1ee75 AM |
8531 | switch (r_type) |
8532 | { | |
8533 | case R_PPC64_TOC16: | |
8534 | case R_PPC64_TOC16_LO: | |
8535 | case R_PPC64_TOC16_HI: | |
8536 | case R_PPC64_TOC16_HA: | |
8537 | case R_PPC64_TOC16_DS: | |
8538 | case R_PPC64_TOC16_LO_DS: | |
8539 | /* In case we're taking addresses of toc entries. */ | |
8540 | case R_PPC64_ADDR64: | |
8541 | break; | |
c5614fa4 | 8542 | |
d4f1ee75 AM |
8543 | default: |
8544 | continue; | |
8545 | } | |
c5614fa4 | 8546 | |
d4f1ee75 AM |
8547 | r_symndx = ELF64_R_SYM (rel->r_info); |
8548 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8549 | r_symndx, ibfd)) | |
8550 | { | |
8551 | free (used); | |
8552 | goto error_ret; | |
8553 | } | |
c5614fa4 | 8554 | |
d4f1ee75 AM |
8555 | if (sym_sec != toc) |
8556 | continue; | |
c5614fa4 | 8557 | |
d4f1ee75 AM |
8558 | if (h != NULL) |
8559 | val = h->root.u.def.value; | |
8560 | else | |
8561 | val = sym->st_value; | |
8562 | val += rel->r_addend; | |
ba761f19 | 8563 | |
d4f1ee75 AM |
8564 | if (val >= toc->size) |
8565 | continue; | |
ba761f19 | 8566 | |
d4f1ee75 AM |
8567 | if ((skip[val >> 3] & can_optimize) != 0) |
8568 | { | |
8569 | bfd_vma off; | |
8570 | unsigned char opc; | |
8571 | ||
8572 | switch (r_type) | |
8573 | { | |
8574 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8575 | break; |
ba761f19 | 8576 | |
d4f1ee75 AM |
8577 | case R_PPC64_TOC16_LO_DS: |
8578 | off = rel->r_offset; | |
8579 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8580 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8581 | off, 1)) | |
8582 | { | |
8583 | free (used); | |
8584 | goto error_ret; | |
8585 | } | |
8586 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8587 | break; | |
8588 | /* Fall thru */ | |
ba761f19 | 8589 | |
d4f1ee75 AM |
8590 | default: |
8591 | /* Wrong sort of reloc, or not a ld. We may | |
8592 | as well clear ref_from_discarded too. */ | |
8593 | skip[val >> 3] = 0; | |
8594 | } | |
8595 | } | |
8596 | ||
8597 | if (sec != toc) | |
8598 | used[val >> 3] = 1; | |
8599 | /* For the toc section, we only mark as used if this | |
8600 | entry itself isn't unused. */ | |
8601 | else if ((used[rel->r_offset >> 3] | |
8602 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8603 | && !used[val >> 3]) | |
8604 | { | |
8605 | /* Do all the relocs again, to catch reference | |
8606 | chains. */ | |
8607 | repeat = 1; | |
8608 | used[val >> 3] = 1; | |
8609 | } | |
8610 | } | |
8611 | } | |
c5614fa4 | 8612 | while (repeat); |
854b41e7 AM |
8613 | |
8614 | if (elf_section_data (sec)->relocs != relstart) | |
8615 | free (relstart); | |
c5614fa4 AM |
8616 | } |
8617 | ||
8618 | /* Merge the used and skip arrays. Assume that TOC | |
8619 | doublewords not appearing as either used or unused belong | |
8620 | to to an entry more than one doubleword in size. */ | |
8621 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8622 | drop < skip + (toc->size + 7) / 8; | |
8623 | ++drop, ++keep) | |
8624 | { | |
8625 | if (*keep) | |
8626 | { | |
ba761f19 AM |
8627 | *drop &= ~ref_from_discarded; |
8628 | if ((*drop & can_optimize) != 0) | |
8629 | some_unused = 1; | |
c5614fa4 AM |
8630 | last = 0; |
8631 | } | |
b140b010 | 8632 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8633 | { |
8634 | some_unused = 1; | |
ba761f19 | 8635 | last = ref_from_discarded; |
c5614fa4 AM |
8636 | } |
8637 | else | |
8638 | *drop = last; | |
8639 | } | |
8640 | ||
8641 | free (used); | |
8642 | ||
8643 | if (some_unused) | |
8644 | { | |
8645 | bfd_byte *contents, *src; | |
8646 | unsigned long off; | |
d62b3684 | 8647 | Elf_Internal_Sym *sym; |
ba761f19 | 8648 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8649 | |
8650 | /* Shuffle the toc contents, and at the same time convert the | |
8651 | skip array from booleans into offsets. */ | |
8652 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8653 | goto error_ret; | |
8654 | ||
8655 | elf_section_data (toc)->this_hdr.contents = contents; | |
8656 | ||
8657 | for (src = contents, off = 0, drop = skip; | |
8658 | src < contents + toc->size; | |
8659 | src += 8, ++drop) | |
8660 | { | |
ba761f19 AM |
8661 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8662 | off += 8; | |
c5614fa4 AM |
8663 | else if (off != 0) |
8664 | { | |
8665 | *drop = off; | |
8666 | memcpy (src - off, src, 8); | |
8667 | } | |
8668 | } | |
854b41e7 | 8669 | *drop = off; |
c5614fa4 AM |
8670 | toc->rawsize = toc->size; |
8671 | toc->size = src - contents - off; | |
8672 | ||
ba761f19 AM |
8673 | /* Adjust addends for relocs against the toc section sym, |
8674 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8675 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8676 | { | |
8677 | if (sec->reloc_count == 0 | |
dbaa2011 | 8678 | || discarded_section (sec)) |
c5614fa4 AM |
8679 | continue; |
8680 | ||
8681 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8682 | info->keep_memory); |
c5614fa4 AM |
8683 | if (relstart == NULL) |
8684 | goto error_ret; | |
8685 | ||
8686 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8687 | { | |
8688 | enum elf_ppc64_reloc_type r_type; | |
8689 | unsigned long r_symndx; | |
8690 | asection *sym_sec; | |
8691 | struct elf_link_hash_entry *h; | |
854b41e7 | 8692 | bfd_vma val; |
c5614fa4 AM |
8693 | |
8694 | r_type = ELF64_R_TYPE (rel->r_info); | |
8695 | switch (r_type) | |
8696 | { | |
8697 | default: | |
8698 | continue; | |
8699 | ||
8700 | case R_PPC64_TOC16: | |
8701 | case R_PPC64_TOC16_LO: | |
8702 | case R_PPC64_TOC16_HI: | |
8703 | case R_PPC64_TOC16_HA: | |
8704 | case R_PPC64_TOC16_DS: | |
8705 | case R_PPC64_TOC16_LO_DS: | |
8706 | case R_PPC64_ADDR64: | |
8707 | break; | |
8708 | } | |
8709 | ||
8710 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8711 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8712 | r_symndx, ibfd)) | |
8713 | goto error_ret; | |
8714 | ||
ba761f19 | 8715 | if (sym_sec != toc) |
c5614fa4 AM |
8716 | continue; |
8717 | ||
ba761f19 AM |
8718 | if (h != NULL) |
8719 | val = h->root.u.def.value; | |
8720 | else | |
8721 | { | |
8722 | val = sym->st_value; | |
8723 | if (val != 0) | |
8724 | local_toc_syms = TRUE; | |
8725 | } | |
8726 | ||
8727 | val += rel->r_addend; | |
854b41e7 AM |
8728 | |
8729 | if (val > toc->rawsize) | |
8730 | val = toc->rawsize; | |
ba761f19 AM |
8731 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8732 | continue; | |
8733 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8734 | { | |
8735 | Elf_Internal_Rela *tocrel | |
425b145b | 8736 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8737 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8738 | ||
8739 | switch (r_type) | |
8740 | { | |
8741 | case R_PPC64_TOC16_HA: | |
8742 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8743 | break; | |
8744 | ||
8745 | case R_PPC64_TOC16_LO_DS: | |
8746 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8747 | break; | |
8748 | ||
8749 | default: | |
28942f62 AM |
8750 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8751 | ppc_howto_init (); | |
b140b010 | 8752 | info->callbacks->einfo |
bc30df16 | 8753 | (_("%P: %H: %s references " |
b140b010 AM |
8754 | "optimized away TOC entry\n"), |
8755 | ibfd, sec, rel->r_offset, | |
8756 | ppc64_elf_howto_table[r_type]->name); | |
8757 | bfd_set_error (bfd_error_bad_value); | |
8758 | goto error_ret; | |
ba761f19 AM |
8759 | } |
8760 | rel->r_addend = tocrel->r_addend; | |
8761 | elf_section_data (sec)->relocs = relstart; | |
8762 | continue; | |
8763 | } | |
8764 | ||
8765 | if (h != NULL || sym->st_value != 0) | |
8766 | continue; | |
854b41e7 AM |
8767 | |
8768 | rel->r_addend -= skip[val >> 3]; | |
8769 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8770 | } |
854b41e7 AM |
8771 | |
8772 | if (elf_section_data (sec)->relocs != relstart) | |
8773 | free (relstart); | |
c5614fa4 AM |
8774 | } |
8775 | ||
8776 | /* We shouldn't have local or global symbols defined in the TOC, | |
8777 | but handle them anyway. */ | |
df22d223 AM |
8778 | if (local_syms != NULL) |
8779 | for (sym = local_syms; | |
8780 | sym < local_syms + symtab_hdr->sh_info; | |
8781 | ++sym) | |
8782 | if (sym->st_value != 0 | |
8783 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8784 | { | |
8785 | unsigned long i; | |
854b41e7 | 8786 | |
df22d223 AM |
8787 | if (sym->st_value > toc->rawsize) |
8788 | i = toc->rawsize >> 3; | |
8789 | else | |
8790 | i = sym->st_value >> 3; | |
854b41e7 | 8791 | |
df22d223 AM |
8792 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8793 | { | |
8794 | if (local_toc_syms) | |
8795 | (*_bfd_error_handler) | |
8796 | (_("%s defined on removed toc entry"), | |
8797 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8798 | do | |
8799 | ++i; | |
8800 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8801 | sym->st_value = (bfd_vma) i << 3; | |
8802 | } | |
d62b3684 | 8803 | |
df22d223 AM |
8804 | sym->st_value -= skip[i]; |
8805 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8806 | } | |
c5614fa4 | 8807 | |
854b41e7 | 8808 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8809 | if (toc_inf.global_toc_syms) |
8810 | { | |
8811 | toc_inf.toc = toc; | |
8812 | toc_inf.skip = skip; | |
8813 | toc_inf.global_toc_syms = FALSE; | |
8814 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8815 | &toc_inf); | |
8816 | } | |
854b41e7 AM |
8817 | |
8818 | if (toc->reloc_count != 0) | |
8819 | { | |
d4730f92 | 8820 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8821 | Elf_Internal_Rela *wrel; |
8822 | bfd_size_type sz; | |
8823 | ||
854b41e7 | 8824 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8825 | if (toc_relocs == NULL) |
8826 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8827 | info->keep_memory); | |
8828 | if (toc_relocs == NULL) | |
8829 | goto error_ret; | |
8830 | ||
425b145b AM |
8831 | wrel = toc_relocs; |
8832 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8833 | if ((skip[rel->r_offset >> 3] |
8834 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8835 | { |
8836 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8837 | wrel->r_info = rel->r_info; | |
8838 | wrel->r_addend = rel->r_addend; | |
8839 | ++wrel; | |
8840 | } | |
8841 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8842 | &local_syms, NULL, NULL)) | |
8843 | goto error_ret; | |
8844 | ||
425b145b AM |
8845 | elf_section_data (toc)->relocs = toc_relocs; |
8846 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8847 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8848 | sz = rel_hdr->sh_entsize; | |
8849 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8850 | } |
c5614fa4 | 8851 | } |
28be611c AM |
8852 | else if (toc_relocs != NULL |
8853 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8854 | free (toc_relocs); |
c5614fa4 AM |
8855 | |
8856 | if (local_syms != NULL | |
8857 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8858 | { | |
8859 | if (!info->keep_memory) | |
8860 | free (local_syms); | |
8861 | else | |
8862 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8863 | } | |
8864 | free (skip); | |
8865 | } | |
8866 | ||
8867 | return TRUE; | |
8868 | } | |
8869 | ||
1bbe0902 AM |
8870 | /* Return true iff input section I references the TOC using |
8871 | instructions limited to +/-32k offsets. */ | |
8872 | ||
8873 | bfd_boolean | |
8874 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8875 | { | |
8876 | return (is_ppc64_elf (i->owner) | |
8877 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8878 | } | |
8879 | ||
927be08e AM |
8880 | /* Allocate space for one GOT entry. */ |
8881 | ||
8882 | static void | |
8883 | allocate_got (struct elf_link_hash_entry *h, | |
8884 | struct bfd_link_info *info, | |
8885 | struct got_entry *gent) | |
8886 | { | |
8887 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8888 | bfd_boolean dyn; | |
8889 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8890 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8891 | ? 16 : 8); | |
8892 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8893 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8894 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8895 | ||
8896 | gent->got.offset = got->size; | |
8897 | got->size += entsize; | |
8898 | ||
8899 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 8900 | if (h->type == STT_GNU_IFUNC) |
927be08e | 8901 | { |
19e08130 AM |
8902 | htab->reliplt->size += rentsize; |
8903 | htab->got_reli_size += rentsize; | |
927be08e | 8904 | } |
19e08130 AM |
8905 | else if ((info->shared |
8906 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8907 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8908 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 8909 | { |
19e08130 | 8910 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 8911 | relgot->size += rentsize; |
927be08e AM |
8912 | } |
8913 | } | |
8914 | ||
7865406b AM |
8915 | /* This function merges got entries in the same toc group. */ |
8916 | ||
8917 | static void | |
8918 | merge_got_entries (struct got_entry **pent) | |
8919 | { | |
8920 | struct got_entry *ent, *ent2; | |
8921 | ||
8922 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8923 | if (!ent->is_indirect) | |
8924 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8925 | if (!ent2->is_indirect | |
8926 | && ent2->addend == ent->addend | |
8927 | && ent2->tls_type == ent->tls_type | |
8928 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8929 | { | |
8930 | ent2->is_indirect = TRUE; | |
8931 | ent2->got.ent = ent; | |
8932 | } | |
8933 | } | |
8934 | ||
65f38f15 AM |
8935 | /* Allocate space in .plt, .got and associated reloc sections for |
8936 | dynamic relocs. */ | |
5bd4f169 | 8937 | |
b34976b6 | 8938 | static bfd_boolean |
4ce794b7 | 8939 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8940 | { |
65f38f15 AM |
8941 | struct bfd_link_info *info; |
8942 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8943 | asection *s; |
65f38f15 | 8944 | struct ppc_link_hash_entry *eh; |
6061a67d | 8945 | struct elf_dyn_relocs *p; |
0b8bcf0d | 8946 | struct got_entry **pgent, *gent; |
5bd4f169 | 8947 | |
e92d460e | 8948 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8949 | return TRUE; |
5bd4f169 | 8950 | |
65f38f15 AM |
8951 | info = (struct bfd_link_info *) inf; |
8952 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8953 | if (htab == NULL) |
8954 | return FALSE; | |
5bd4f169 | 8955 | |
e054468f AM |
8956 | if ((htab->elf.dynamic_sections_created |
8957 | && h->dynindx != -1 | |
8958 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8959 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8960 | { |
411e1bfb AM |
8961 | struct plt_entry *pent; |
8962 | bfd_boolean doneone = FALSE; | |
8963 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8964 | if (pent->plt.refcount > 0) | |
8965 | { | |
25f23106 AM |
8966 | if (!htab->elf.dynamic_sections_created |
8967 | || h->dynindx == -1) | |
e054468f AM |
8968 | { |
8969 | s = htab->iplt; | |
8970 | pent->plt.offset = s->size; | |
8971 | s->size += PLT_ENTRY_SIZE; | |
8972 | s = htab->reliplt; | |
8973 | } | |
8974 | else | |
8975 | { | |
8976 | /* If this is the first .plt entry, make room for the special | |
8977 | first entry. */ | |
8978 | s = htab->plt; | |
8979 | if (s->size == 0) | |
8980 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8981 | ||
8982 | pent->plt.offset = s->size; | |
8983 | ||
8984 | /* Make room for this entry. */ | |
8985 | s->size += PLT_ENTRY_SIZE; | |
8986 | ||
8987 | /* Make room for the .glink code. */ | |
8988 | s = htab->glink; | |
8989 | if (s->size == 0) | |
8990 | s->size += GLINK_CALL_STUB_SIZE; | |
8991 | /* We need bigger stubs past index 32767. */ | |
8992 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8993 | s->size += 4; | |
8994 | s->size += 2*4; | |
8995 | ||
8996 | /* We also need to make an entry in the .rela.plt section. */ | |
8997 | s = htab->relplt; | |
8998 | } | |
eea6121a | 8999 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9000 | doneone = TRUE; |
9001 | } | |
9002 | else | |
9003 | pent->plt.offset = (bfd_vma) -1; | |
9004 | if (!doneone) | |
65f38f15 | 9005 | { |
411e1bfb | 9006 | h->plt.plist = NULL; |
f5385ebf | 9007 | h->needs_plt = 0; |
65f38f15 AM |
9008 | } |
9009 | } | |
9010 | else | |
9011 | { | |
411e1bfb | 9012 | h->plt.plist = NULL; |
f5385ebf | 9013 | h->needs_plt = 0; |
65f38f15 AM |
9014 | } |
9015 | ||
951fd09b AM |
9016 | eh = (struct ppc_link_hash_entry *) h; |
9017 | /* Run through the TLS GD got entries first if we're changing them | |
9018 | to TPREL. */ | |
e7b938ca | 9019 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9020 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9021 | if (gent->got.refcount > 0 | |
9022 | && (gent->tls_type & TLS_GD) != 0) | |
9023 | { | |
9024 | /* This was a GD entry that has been converted to TPREL. If | |
9025 | there happens to be a TPREL entry we can use that one. */ | |
9026 | struct got_entry *ent; | |
9027 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9028 | if (ent->got.refcount > 0 | |
9029 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9030 | && ent->addend == gent->addend |
9031 | && ent->owner == gent->owner) | |
951fd09b AM |
9032 | { |
9033 | gent->got.refcount = 0; | |
9034 | break; | |
9035 | } | |
9036 | ||
9037 | /* If not, then we'll be using our own TPREL entry. */ | |
9038 | if (gent->got.refcount != 0) | |
9039 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9040 | } | |
9041 | ||
7865406b AM |
9042 | /* Remove any list entry that won't generate a word in the GOT before |
9043 | we call merge_got_entries. Otherwise we risk merging to empty | |
9044 | entries. */ | |
0b8bcf0d AM |
9045 | pgent = &h->got.glist; |
9046 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9047 | if (gent->got.refcount > 0) |
7865406b AM |
9048 | { |
9049 | if ((gent->tls_type & TLS_LD) != 0 | |
9050 | && !h->def_dynamic) | |
9051 | { | |
9052 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9053 | *pgent = gent->next; | |
9054 | } | |
9055 | else | |
9056 | pgent = &gent->next; | |
9057 | } | |
9058 | else | |
9059 | *pgent = gent->next; | |
9060 | ||
9061 | if (!htab->do_multi_toc) | |
9062 | merge_got_entries (&h->got.glist); | |
9063 | ||
9064 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9065 | if (!gent->is_indirect) | |
411e1bfb AM |
9066 | { |
9067 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9068 | Undefined weak syms won't yet be marked as dynamic, |
9069 | nor will all TLS symbols. */ | |
411e1bfb | 9070 | if (h->dynindx == -1 |
b099ab9f | 9071 | && !h->forced_local |
25f23106 | 9072 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9073 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9074 | { |
c152c796 | 9075 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9076 | return FALSE; |
9077 | } | |
65f38f15 | 9078 | |
0c8d6e5c | 9079 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9080 | abort (); |
0ffa91dd | 9081 | |
927be08e | 9082 | allocate_got (h, info, gent); |
411e1bfb | 9083 | } |
65f38f15 | 9084 | |
b099ab9f | 9085 | if (eh->dyn_relocs == NULL |
25f23106 AM |
9086 | || (!htab->elf.dynamic_sections_created |
9087 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 9088 | return TRUE; |
65f38f15 AM |
9089 | |
9090 | /* In the shared -Bsymbolic case, discard space allocated for | |
9091 | dynamic pc-relative relocs against symbols which turn out to be | |
9092 | defined in regular objects. For the normal shared case, discard | |
9093 | space for relocs that have become local due to symbol visibility | |
9094 | changes. */ | |
9095 | ||
9096 | if (info->shared) | |
9097 | { | |
9c7a29a3 | 9098 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9099 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9100 | generated via assembly. We want calls to protected symbols to |
9101 | resolve directly to the function rather than going via the plt. | |
9102 | If people want function pointer comparisons to work as expected | |
9103 | then they should avoid writing weird assembly. */ | |
09695f56 | 9104 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9105 | { |
6061a67d | 9106 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9107 | |
9108 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9109 | { |
65f38f15 AM |
9110 | p->count -= p->pc_count; |
9111 | p->pc_count = 0; | |
9112 | if (p->count == 0) | |
9113 | *pp = p->next; | |
9114 | else | |
9115 | pp = &p->next; | |
5bd4f169 | 9116 | } |
65f38f15 | 9117 | } |
4e795f50 AM |
9118 | |
9119 | /* Also discard relocs on undefined weak syms with non-default | |
9120 | visibility. */ | |
cab87ef9 AM |
9121 | if (eh->dyn_relocs != NULL |
9122 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9123 | { |
9124 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9125 | eh->dyn_relocs = NULL; | |
9126 | ||
9127 | /* Make sure this symbol is output as a dynamic symbol. | |
9128 | Undefined weak syms won't yet be marked as dynamic. */ | |
9129 | else if (h->dynindx == -1 | |
9130 | && !h->forced_local) | |
9131 | { | |
9132 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9133 | return FALSE; | |
9134 | } | |
9135 | } | |
65f38f15 | 9136 | } |
25f23106 AM |
9137 | else if (h->type == STT_GNU_IFUNC) |
9138 | { | |
9139 | if (!h->non_got_ref) | |
9140 | eh->dyn_relocs = NULL; | |
9141 | } | |
f4656909 | 9142 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9143 | { |
9144 | /* For the non-shared case, discard space for relocs against | |
9145 | symbols which turn out to need copy relocs or are not | |
9146 | dynamic. */ | |
9147 | ||
f5385ebf | 9148 | if (!h->non_got_ref |
f5385ebf | 9149 | && !h->def_regular) |
65f38f15 AM |
9150 | { |
9151 | /* Make sure this symbol is output as a dynamic symbol. | |
9152 | Undefined weak syms won't yet be marked as dynamic. */ | |
9153 | if (h->dynindx == -1 | |
f5385ebf | 9154 | && !h->forced_local) |
65f38f15 | 9155 | { |
c152c796 | 9156 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9157 | return FALSE; |
65f38f15 AM |
9158 | } |
9159 | ||
9160 | /* If that succeeded, we know we'll be keeping all the | |
9161 | relocs. */ | |
9162 | if (h->dynindx != -1) | |
9163 | goto keep; | |
9164 | } | |
9165 | ||
9166 | eh->dyn_relocs = NULL; | |
9167 | ||
ec338859 | 9168 | keep: ; |
65f38f15 AM |
9169 | } |
9170 | ||
9171 | /* Finally, allocate space. */ | |
9172 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9173 | { | |
9174 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9175 | if (eh->elf.type == STT_GNU_IFUNC) |
25f23106 | 9176 | sreloc = htab->reliplt; |
eea6121a | 9177 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9178 | } |
9179 | ||
b34976b6 | 9180 | return TRUE; |
65f38f15 AM |
9181 | } |
9182 | ||
9183 | /* Find any dynamic relocs that apply to read-only sections. */ | |
9184 | ||
b34976b6 | 9185 | static bfd_boolean |
4ce794b7 | 9186 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
9187 | { |
9188 | struct ppc_link_hash_entry *eh; | |
6061a67d | 9189 | struct elf_dyn_relocs *p; |
65f38f15 AM |
9190 | |
9191 | eh = (struct ppc_link_hash_entry *) h; | |
9192 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9193 | { | |
9194 | asection *s = p->sec->output_section; | |
9195 | ||
9196 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
9197 | { | |
4ce794b7 | 9198 | struct bfd_link_info *info = inf; |
65f38f15 AM |
9199 | |
9200 | info->flags |= DF_TEXTREL; | |
9201 | ||
9202 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 9203 | return FALSE; |
65f38f15 AM |
9204 | } |
9205 | } | |
b34976b6 | 9206 | return TRUE; |
65f38f15 AM |
9207 | } |
9208 | ||
9209 | /* Set the sizes of the dynamic sections. */ | |
9210 | ||
b34976b6 | 9211 | static bfd_boolean |
4ce794b7 AM |
9212 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
9213 | struct bfd_link_info *info) | |
65f38f15 AM |
9214 | { |
9215 | struct ppc_link_hash_table *htab; | |
9216 | bfd *dynobj; | |
9217 | asection *s; | |
b34976b6 | 9218 | bfd_boolean relocs; |
65f38f15 | 9219 | bfd *ibfd; |
7865406b | 9220 | struct got_entry *first_tlsld; |
65f38f15 AM |
9221 | |
9222 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9223 | if (htab == NULL) |
9224 | return FALSE; | |
9225 | ||
65f38f15 AM |
9226 | dynobj = htab->elf.dynobj; |
9227 | if (dynobj == NULL) | |
9228 | abort (); | |
9229 | ||
9230 | if (htab->elf.dynamic_sections_created) | |
9231 | { | |
9232 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9233 | if (info->executable) |
65f38f15 | 9234 | { |
3d4d4302 | 9235 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9236 | if (s == NULL) |
9237 | abort (); | |
eea6121a | 9238 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9239 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9240 | } | |
9241 | } | |
9242 | ||
9243 | /* Set up .got offsets for local syms, and space for local dynamic | |
9244 | relocs. */ | |
9245 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9246 | { | |
411e1bfb AM |
9247 | struct got_entry **lgot_ents; |
9248 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9249 | struct plt_entry **local_plt; |
9250 | struct plt_entry **end_local_plt; | |
f961d9dd | 9251 | unsigned char *lgot_masks; |
65f38f15 AM |
9252 | bfd_size_type locsymcount; |
9253 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9254 | |
0c8d6e5c | 9255 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9256 | continue; |
9257 | ||
9258 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9259 | { | |
19e08130 | 9260 | struct ppc_dyn_relocs *p; |
65f38f15 | 9261 | |
6edfbbad | 9262 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9263 | { |
ec338859 AM |
9264 | if (!bfd_is_abs_section (p->sec) |
9265 | && bfd_is_abs_section (p->sec->output_section)) | |
9266 | { | |
9267 | /* Input section has been discarded, either because | |
9268 | it is a copy of a linkonce section or due to | |
9269 | linker script /DISCARD/, so we'll be discarding | |
9270 | the relocs too. */ | |
9271 | } | |
248866a8 | 9272 | else if (p->count != 0) |
ec338859 | 9273 | { |
19e08130 AM |
9274 | asection *srel = elf_section_data (p->sec)->sreloc; |
9275 | if (p->ifunc) | |
25f23106 | 9276 | srel = htab->reliplt; |
eea6121a | 9277 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9278 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9279 | info->flags |= DF_TEXTREL; | |
ec338859 | 9280 | } |
65f38f15 AM |
9281 | } |
9282 | } | |
9283 | ||
411e1bfb AM |
9284 | lgot_ents = elf_local_got_ents (ibfd); |
9285 | if (!lgot_ents) | |
65f38f15 AM |
9286 | continue; |
9287 | ||
0ffa91dd | 9288 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9289 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9290 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9291 | local_plt = (struct plt_entry **) end_lgot_ents; |
9292 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9293 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9294 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9295 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9296 | { |
0b8bcf0d | 9297 | struct got_entry **pent, *ent; |
411e1bfb | 9298 | |
0b8bcf0d AM |
9299 | pent = lgot_ents; |
9300 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9301 | if (ent->got.refcount > 0) |
9302 | { | |
e7b938ca | 9303 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9304 | { |
927be08e | 9305 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9306 | *pent = ent->next; |
411e1bfb AM |
9307 | } |
9308 | else | |
9309 | { | |
19e08130 AM |
9310 | unsigned int ent_size = 8; |
9311 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9312 | ||
eea6121a | 9313 | ent->got.offset = s->size; |
e7b938ca | 9314 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9315 | { |
19e08130 AM |
9316 | ent_size *= 2; |
9317 | rel_size *= 2; | |
9318 | } | |
9319 | s->size += ent_size; | |
9320 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9321 | { | |
9322 | htab->reliplt->size += rel_size; | |
9323 | htab->got_reli_size += rel_size; | |
9324 | } | |
9325 | else if (info->shared) | |
9326 | { | |
9327 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9328 | srel->size += rel_size; | |
927be08e | 9329 | } |
0b8bcf0d | 9330 | pent = &ent->next; |
411e1bfb AM |
9331 | } |
9332 | } | |
9333 | else | |
0b8bcf0d | 9334 | *pent = ent->next; |
65f38f15 | 9335 | } |
e054468f AM |
9336 | |
9337 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9338 | for (; local_plt < end_local_plt; ++local_plt) | |
9339 | { | |
9340 | struct plt_entry *ent; | |
9341 | ||
9342 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9343 | if (ent->plt.refcount > 0) | |
9344 | { | |
91d6fa6a | 9345 | s = htab->iplt; |
e054468f AM |
9346 | ent->plt.offset = s->size; |
9347 | s->size += PLT_ENTRY_SIZE; | |
9348 | ||
25f23106 | 9349 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9350 | } |
9351 | else | |
9352 | ent->plt.offset = (bfd_vma) -1; | |
9353 | } | |
65f38f15 AM |
9354 | } |
9355 | ||
9356 | /* Allocate global sym .plt and .got entries, and space for global | |
9357 | sym dynamic relocs. */ | |
4ce794b7 | 9358 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 9359 | |
7865406b | 9360 | first_tlsld = NULL; |
102890f0 AM |
9361 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9362 | { | |
7865406b AM |
9363 | struct got_entry *ent; |
9364 | ||
0c8d6e5c | 9365 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9366 | continue; |
9367 | ||
7865406b AM |
9368 | ent = ppc64_tlsld_got (ibfd); |
9369 | if (ent->got.refcount > 0) | |
102890f0 | 9370 | { |
7865406b | 9371 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9372 | { |
7865406b AM |
9373 | ent->is_indirect = TRUE; |
9374 | ent->got.ent = first_tlsld; | |
9375 | } | |
9376 | else | |
9377 | { | |
9378 | if (first_tlsld == NULL) | |
9379 | first_tlsld = ent; | |
9380 | s = ppc64_elf_tdata (ibfd)->got; | |
9381 | ent->got.offset = s->size; | |
9382 | ent->owner = ibfd; | |
9383 | s->size += 16; | |
9384 | if (info->shared) | |
9385 | { | |
9386 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9387 | srel->size += sizeof (Elf64_External_Rela); | |
9388 | } | |
102890f0 AM |
9389 | } |
9390 | } | |
9391 | else | |
7865406b | 9392 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9393 | } |
9394 | ||
65f38f15 AM |
9395 | /* We now have determined the sizes of the various dynamic sections. |
9396 | Allocate memory for them. */ | |
b34976b6 | 9397 | relocs = FALSE; |
65f38f15 AM |
9398 | for (s = dynobj->sections; s != NULL; s = s->next) |
9399 | { | |
9400 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9401 | continue; | |
9402 | ||
4ce794b7 | 9403 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9404 | /* These haven't been allocated yet; don't strip. */ |
9405 | continue; | |
e717da7e AM |
9406 | else if (s == htab->got |
9407 | || s == htab->plt | |
e054468f | 9408 | || s == htab->iplt |
c456f082 AM |
9409 | || s == htab->glink |
9410 | || s == htab->dynbss) | |
65f38f15 AM |
9411 | { |
9412 | /* Strip this section if we don't need it; see the | |
9413 | comment below. */ | |
5bd4f169 | 9414 | } |
58d180e8 AM |
9415 | else if (s == htab->glink_eh_frame) |
9416 | { | |
9417 | if (!bfd_is_abs_section (s->output_section)) | |
9418 | /* Not sized yet. */ | |
9419 | continue; | |
9420 | } | |
70cc837d | 9421 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9422 | { |
c456f082 | 9423 | if (s->size != 0) |
5bd4f169 | 9424 | { |
4ce794b7 | 9425 | if (s != htab->relplt) |
b34976b6 | 9426 | relocs = TRUE; |
5bd4f169 AM |
9427 | |
9428 | /* We use the reloc_count field as a counter if we need | |
9429 | to copy relocs into the output file. */ | |
9430 | s->reloc_count = 0; | |
9431 | } | |
9432 | } | |
65f38f15 | 9433 | else |
5bd4f169 AM |
9434 | { |
9435 | /* It's not one of our sections, so don't allocate space. */ | |
9436 | continue; | |
9437 | } | |
9438 | ||
eea6121a | 9439 | if (s->size == 0) |
5bd4f169 | 9440 | { |
c456f082 AM |
9441 | /* If we don't need this section, strip it from the |
9442 | output file. This is mostly to handle .rela.bss and | |
9443 | .rela.plt. We must create both sections in | |
9444 | create_dynamic_sections, because they must be created | |
9445 | before the linker maps input sections to output | |
9446 | sections. The linker does that before | |
9447 | adjust_dynamic_symbol is called, and it is that | |
9448 | function which decides whether anything needs to go | |
9449 | into these sections. */ | |
8423293d | 9450 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9451 | continue; |
9452 | } | |
9453 | ||
c456f082 | 9454 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9455 | continue; |
9456 | ||
65f38f15 AM |
9457 | /* Allocate memory for the section contents. We use bfd_zalloc |
9458 | here in case unused entries are not reclaimed before the | |
9459 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9460 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9461 | sections instead of garbage. | |
9462 | We also rely on the section contents being zero when writing | |
9463 | the GOT. */ | |
eea6121a | 9464 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9465 | if (s->contents == NULL) |
b34976b6 | 9466 | return FALSE; |
5bd4f169 AM |
9467 | } |
9468 | ||
e717da7e AM |
9469 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9470 | { | |
0c8d6e5c | 9471 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9472 | continue; |
9473 | ||
e717da7e AM |
9474 | s = ppc64_elf_tdata (ibfd)->got; |
9475 | if (s != NULL && s != htab->got) | |
9476 | { | |
eea6121a | 9477 | if (s->size == 0) |
8423293d | 9478 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9479 | else |
9480 | { | |
eea6121a | 9481 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9482 | if (s->contents == NULL) |
9483 | return FALSE; | |
9484 | } | |
9485 | } | |
9486 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9487 | if (s != NULL) | |
9488 | { | |
eea6121a | 9489 | if (s->size == 0) |
8423293d | 9490 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9491 | else |
9492 | { | |
eea6121a | 9493 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9494 | if (s->contents == NULL) |
9495 | return FALSE; | |
9496 | relocs = TRUE; | |
9497 | s->reloc_count = 0; | |
9498 | } | |
9499 | } | |
9500 | } | |
9501 | ||
e86ce104 | 9502 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
9503 | { |
9504 | /* Add some entries to the .dynamic section. We fill in the | |
9505 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9506 | must add the entries now so that we get the correct size for | |
9507 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9508 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9509 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9510 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9511 | |
36af4a4e | 9512 | if (info->executable) |
5bd4f169 | 9513 | { |
dc810e39 | 9514 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9515 | return FALSE; |
5bd4f169 AM |
9516 | } |
9517 | ||
eea6121a | 9518 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 9519 | { |
dc810e39 AM |
9520 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9521 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9522 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9523 | || !add_dynamic_entry (DT_JMPREL, 0) |
9524 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9525 | return FALSE; |
5bd4f169 AM |
9526 | } |
9527 | ||
19397422 AM |
9528 | if (NO_OPD_RELOCS) |
9529 | { | |
9530 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9531 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9532 | return FALSE; |
19397422 AM |
9533 | } |
9534 | ||
a7f2871e AM |
9535 | if (!htab->no_tls_get_addr_opt |
9536 | && htab->tls_get_addr_fd != NULL | |
9537 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
9538 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
9539 | return FALSE; | |
9540 | ||
5bd4f169 AM |
9541 | if (relocs) |
9542 | { | |
dc810e39 AM |
9543 | if (!add_dynamic_entry (DT_RELA, 0) |
9544 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9545 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9546 | return FALSE; |
5bd4f169 | 9547 | |
65f38f15 AM |
9548 | /* If any dynamic relocs apply to a read-only section, |
9549 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9550 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 9551 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 9552 | |
65f38f15 | 9553 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9554 | { |
65f38f15 | 9555 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9556 | return FALSE; |
5bd4f169 | 9557 | } |
5bd4f169 | 9558 | } |
5bd4f169 | 9559 | } |
65f38f15 | 9560 | #undef add_dynamic_entry |
5bd4f169 | 9561 | |
b34976b6 | 9562 | return TRUE; |
5bd4f169 AM |
9563 | } |
9564 | ||
721956f4 | 9565 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9566 | |
4ce794b7 AM |
9567 | static inline enum ppc_stub_type |
9568 | ppc_type_of_stub (asection *input_sec, | |
9569 | const Elf_Internal_Rela *rel, | |
9570 | struct ppc_link_hash_entry **hash, | |
e054468f | 9571 | struct plt_entry **plt_ent, |
4ce794b7 | 9572 | bfd_vma destination) |
5bd4f169 | 9573 | { |
721956f4 AM |
9574 | struct ppc_link_hash_entry *h = *hash; |
9575 | bfd_vma location; | |
9576 | bfd_vma branch_offset; | |
9577 | bfd_vma max_branch_offset; | |
4ce794b7 | 9578 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9579 | |
721956f4 AM |
9580 | if (h != NULL) |
9581 | { | |
e054468f | 9582 | struct plt_entry *ent; |
7fe2b9a6 | 9583 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9584 | if (h->oh != NULL |
9585 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9586 | { |
9587 | fdh = ppc_follow_link (h->oh); | |
9588 | *hash = fdh; | |
9589 | } | |
8387904d | 9590 | |
e054468f AM |
9591 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9592 | if (ent->addend == rel->r_addend | |
9593 | && ent->plt.offset != (bfd_vma) -1) | |
9594 | { | |
e054468f AM |
9595 | *plt_ent = ent; |
9596 | return ppc_stub_plt_call; | |
9597 | } | |
5bd4f169 | 9598 | |
7fe2b9a6 AM |
9599 | /* Here, we know we don't have a plt entry. If we don't have a |
9600 | either a defined function descriptor or a defined entry symbol | |
9601 | in a regular object file, then it is pointless trying to make | |
9602 | any other type of stub. */ | |
854b41e7 AM |
9603 | if (!is_static_defined (&fdh->elf) |
9604 | && !is_static_defined (&h->elf)) | |
721956f4 | 9605 | return ppc_stub_none; |
5d1634d7 | 9606 | } |
e054468f AM |
9607 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9608 | { | |
9609 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9610 | struct plt_entry **local_plt = (struct plt_entry **) | |
9611 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9612 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9613 | ||
9614 | if (local_plt[r_symndx] != NULL) | |
9615 | { | |
9616 | struct plt_entry *ent; | |
9617 | ||
9618 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9619 | if (ent->addend == rel->r_addend | |
9620 | && ent->plt.offset != (bfd_vma) -1) | |
9621 | { | |
9622 | *plt_ent = ent; | |
9623 | return ppc_stub_plt_call; | |
9624 | } | |
9625 | } | |
9626 | } | |
5d1634d7 | 9627 | |
721956f4 AM |
9628 | /* Determine where the call point is. */ |
9629 | location = (input_sec->output_offset | |
9630 | + input_sec->output_section->vma | |
9631 | + rel->r_offset); | |
5d1634d7 | 9632 | |
721956f4 AM |
9633 | branch_offset = destination - location; |
9634 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9635 | |
721956f4 AM |
9636 | /* Determine if a long branch stub is needed. */ |
9637 | max_branch_offset = 1 << 25; | |
4ce794b7 | 9638 | if (r_type != R_PPC64_REL24) |
721956f4 | 9639 | max_branch_offset = 1 << 15; |
5d1634d7 | 9640 | |
721956f4 AM |
9641 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
9642 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
9643 | is needed later. */ | |
9644 | return ppc_stub_long_branch; | |
5d1634d7 | 9645 | |
721956f4 | 9646 | return ppc_stub_none; |
5d1634d7 AM |
9647 | } |
9648 | ||
794e51c0 AM |
9649 | /* With power7 weakly ordered memory model, it is possible for ld.so |
9650 | to update a plt entry in one thread and have another thread see a | |
9651 | stale zero toc entry. To avoid this we need some sort of acquire | |
9652 | barrier in the call stub. One solution is to make the load of the | |
9653 | toc word seem to appear to depend on the load of the function entry | |
9654 | word. Another solution is to test for r2 being zero, and branch to | |
9655 | the appropriate glink entry if so. | |
9656 | ||
9657 | . fake dep barrier compare | |
9658 | . ld 11,xxx(2) ld 11,xxx(2) | |
9659 | . mtctr 11 mtctr 11 | |
9660 | . xor 11,11,11 ld 2,xxx+8(2) | |
9661 | . add 2,2,11 cmpldi 2,0 | |
9662 | . ld 2,xxx+8(2) bnectr+ | |
9663 | . bctr b <glink_entry> | |
9664 | ||
9665 | The solution involving the compare turns out to be faster, so | |
9666 | that's what we use unless the branch won't reach. */ | |
9667 | ||
9668 | #define ALWAYS_USE_FAKE_DEP 0 | |
9669 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 9670 | |
5d1634d7 AM |
9671 | #define PPC_LO(v) ((v) & 0xffff) |
9672 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9673 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9674 | ||
794e51c0 AM |
9675 | static inline unsigned int |
9676 | plt_stub_size (struct ppc_link_hash_table *htab, | |
9677 | struct ppc_stub_hash_entry *stub_entry, | |
9678 | bfd_vma off) | |
9679 | { | |
9680 | unsigned size = PLT_CALL_STUB_SIZE; | |
9681 | ||
9682 | if (!(ALWAYS_EMIT_R2SAVE | |
9683 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
9684 | size -= 4; | |
9685 | if (!htab->plt_static_chain) | |
9686 | size -= 4; | |
9687 | if (htab->plt_thread_safe) | |
9688 | size += 8; | |
9689 | if (PPC_HA (off) == 0) | |
9690 | size -= 4; | |
9691 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) | |
9692 | size += 4; | |
9693 | if (stub_entry->h != NULL | |
9694 | && (stub_entry->h == htab->tls_get_addr_fd | |
9695 | || stub_entry->h == htab->tls_get_addr) | |
9696 | && !htab->no_tls_get_addr_opt) | |
9697 | size += 13 * 4; | |
9698 | return size; | |
9699 | } | |
9700 | ||
9701 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
9702 | then return the padding needed to do so. */ | |
9703 | static inline unsigned int | |
9704 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
9705 | struct ppc_stub_hash_entry *stub_entry, | |
9706 | bfd_vma plt_off) | |
9707 | { | |
9708 | int stub_align = 1 << htab->plt_stub_align; | |
9709 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); | |
9710 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
9711 | ||
9712 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
9713 | > (stub_size & -stub_align)) | |
9714 | return stub_align - (stub_off & (stub_align - 1)); | |
9715 | return 0; | |
9716 | } | |
9717 | ||
9718 | /* Build a .plt call stub. */ | |
9719 | ||
9720 | static inline bfd_byte * | |
9721 | build_plt_stub (struct ppc_link_hash_table *htab, | |
9722 | struct ppc_stub_hash_entry *stub_entry, | |
9723 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
9724 | { | |
9725 | bfd *obfd = htab->stub_bfd; | |
9726 | bfd_boolean plt_static_chain = htab->plt_static_chain; | |
9727 | bfd_boolean plt_thread_safe = htab->plt_thread_safe; | |
9728 | bfd_boolean use_fake_dep = plt_thread_safe; | |
9729 | bfd_vma cmp_branch_off = 0; | |
9730 | ||
9731 | if (!ALWAYS_USE_FAKE_DEP | |
9732 | && plt_thread_safe | |
9733 | && !(stub_entry->h != NULL | |
9734 | && (stub_entry->h == htab->tls_get_addr_fd | |
9735 | || stub_entry->h == htab->tls_get_addr) | |
9736 | && !htab->no_tls_get_addr_opt)) | |
9737 | { | |
9738 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
9739 | bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9740 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; | |
9741 | bfd_vma to, from; | |
9742 | ||
68d62958 AM |
9743 | if (pltindex > 32768) |
9744 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
9745 | to = (glinkoff |
9746 | + htab->glink->output_offset | |
9747 | + htab->glink->output_section->vma); | |
9748 | from = (p - stub_entry->stub_sec->contents | |
9749 | + 4 * (ALWAYS_EMIT_R2SAVE | |
9750 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9751 | + 4 * (PPC_HA (offset) != 0) | |
9752 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
9753 | != PPC_HA (offset)) | |
9754 | + 4 * (plt_static_chain != 0) | |
9755 | + 20 | |
9756 | + stub_entry->stub_sec->output_offset | |
9757 | + stub_entry->stub_sec->output_section->vma); | |
9758 | cmp_branch_off = to - from; | |
9759 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
9760 | } | |
9761 | ||
ac2df442 AM |
9762 | if (PPC_HA (offset) != 0) |
9763 | { | |
176a0d42 AM |
9764 | if (r != NULL) |
9765 | { | |
794e51c0 AM |
9766 | if (ALWAYS_EMIT_R2SAVE |
9767 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9768 | r[0].r_offset += 4; | |
176a0d42 | 9769 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 9770 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
9771 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9772 | r[1].r_addend = r[0].r_addend; | |
c7131b65 | 9773 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9774 | { |
9775 | r[2].r_offset = r[1].r_offset + 4; | |
9776 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9777 | r[2].r_addend = r[0].r_addend; | |
9778 | } | |
9779 | else | |
9780 | { | |
794e51c0 | 9781 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; |
176a0d42 AM |
9782 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9783 | r[2].r_addend = r[0].r_addend + 8; | |
c7131b65 AM |
9784 | if (plt_static_chain) |
9785 | { | |
9786 | r[3].r_offset = r[2].r_offset + 4; | |
9787 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9788 | r[3].r_addend = r[0].r_addend + 16; | |
9789 | } | |
176a0d42 AM |
9790 | } |
9791 | } | |
794e51c0 AM |
9792 | if (ALWAYS_EMIT_R2SAVE |
9793 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9794 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
3b421ab3 | 9795 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ac2df442 | 9796 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
9df0ef5f | 9797 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9798 | { |
9799 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
9800 | offset = 0; | |
9801 | } | |
9802 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
794e51c0 AM |
9803 | if (use_fake_dep) |
9804 | { | |
9805 | bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4; | |
9806 | bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4; | |
9807 | } | |
ac2df442 | 9808 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; |
9df0ef5f AM |
9809 | if (plt_static_chain) |
9810 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 AM |
9811 | } |
9812 | else | |
9813 | { | |
176a0d42 AM |
9814 | if (r != NULL) |
9815 | { | |
794e51c0 AM |
9816 | if (ALWAYS_EMIT_R2SAVE |
9817 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9818 | r[0].r_offset += 4; | |
176a0d42 | 9819 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
c7131b65 | 9820 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9821 | { |
9822 | r[1].r_offset = r[0].r_offset + 4; | |
9823 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9824 | r[1].r_addend = r[0].r_addend; | |
9825 | } | |
9826 | else | |
9827 | { | |
794e51c0 | 9828 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; |
176a0d42 | 9829 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
c7131b65 AM |
9830 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; |
9831 | if (plt_static_chain) | |
9832 | { | |
9833 | r[2].r_offset = r[1].r_offset + 4; | |
9834 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9835 | r[2].r_addend = r[0].r_addend + 8; | |
9836 | } | |
176a0d42 AM |
9837 | } |
9838 | } | |
794e51c0 AM |
9839 | if (ALWAYS_EMIT_R2SAVE |
9840 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9841 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
ac2df442 | 9842 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; |
9df0ef5f | 9843 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9844 | { |
9845 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9846 | offset = 0; | |
9847 | } | |
9848 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
794e51c0 AM |
9849 | if (use_fake_dep) |
9850 | { | |
9851 | bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4; | |
9852 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
9853 | } | |
9df0ef5f AM |
9854 | if (plt_static_chain) |
9855 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 | 9856 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; |
ac2df442 | 9857 | } |
794e51c0 AM |
9858 | if (plt_thread_safe && !use_fake_dep) |
9859 | { | |
9860 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
9861 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 9862 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
9863 | } |
9864 | else | |
9865 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
9866 | return p; |
9867 | } | |
9868 | ||
a7f2871e AM |
9869 | /* Build a special .plt call stub for __tls_get_addr. */ |
9870 | ||
9871 | #define LD_R11_0R3 0xe9630000 | |
9872 | #define LD_R12_0R3 0xe9830000 | |
9873 | #define MR_R0_R3 0x7c601b78 | |
9874 | #define CMPDI_R11_0 0x2c2b0000 | |
9875 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9876 | #define BEQLR 0x4d820020 | |
9877 | #define MR_R3_R0 0x7c030378 | |
9878 | #define MFLR_R11 0x7d6802a6 | |
9879 | #define STD_R11_0R1 0xf9610000 | |
9880 | #define BCTRL 0x4e800421 | |
9881 | #define LD_R11_0R1 0xe9610000 | |
9882 | #define LD_R2_0R1 0xe8410000 | |
9883 | #define MTLR_R11 0x7d6803a6 | |
9884 | ||
9885 | static inline bfd_byte * | |
794e51c0 AM |
9886 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
9887 | struct ppc_stub_hash_entry *stub_entry, | |
9888 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 9889 | { |
794e51c0 AM |
9890 | bfd *obfd = htab->stub_bfd; |
9891 | ||
a7f2871e AM |
9892 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
9893 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9894 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9895 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9896 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9897 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9898 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9899 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
9900 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
9901 | ||
9902 | if (r != NULL) | |
9903 | r[0].r_offset += 9 * 4; | |
794e51c0 | 9904 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
9905 | bfd_put_32 (obfd, BCTRL, p - 4); |
9906 | ||
9907 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
9908 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
9909 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
9910 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9911 | ||
9912 | return p; | |
9913 | } | |
9914 | ||
176a0d42 AM |
9915 | static Elf_Internal_Rela * |
9916 | get_relocs (asection *sec, int count) | |
9917 | { | |
9918 | Elf_Internal_Rela *relocs; | |
9919 | struct bfd_elf_section_data *elfsec_data; | |
9920 | ||
9921 | elfsec_data = elf_section_data (sec); | |
9922 | relocs = elfsec_data->relocs; | |
9923 | if (relocs == NULL) | |
9924 | { | |
9925 | bfd_size_type relsize; | |
9926 | relsize = sec->reloc_count * sizeof (*relocs); | |
9927 | relocs = bfd_alloc (sec->owner, relsize); | |
9928 | if (relocs == NULL) | |
9929 | return NULL; | |
9930 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
9931 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
9932 | sizeof (Elf_Internal_Shdr)); | |
9933 | if (elfsec_data->rela.hdr == NULL) | |
9934 | return NULL; | |
9935 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
9936 | * sizeof (Elf64_External_Rela)); | |
9937 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
9938 | sec->reloc_count = 0; |
9939 | } | |
9940 | relocs += sec->reloc_count; | |
9941 | sec->reloc_count += count; | |
9942 | return relocs; | |
9943 | } | |
9944 | ||
aa374f67 | 9945 | static bfd_vma |
25f53a85 | 9946 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
9947 | struct ppc_stub_hash_entry *stub_entry) |
9948 | { | |
25f53a85 | 9949 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
9950 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
9951 | ||
9952 | if (r2off == 0) | |
9953 | { | |
9954 | /* Support linking -R objects. Get the toc pointer from the | |
9955 | opd entry. */ | |
9956 | char buf[8]; | |
9957 | asection *opd = stub_entry->h->elf.root.u.def.section; | |
9958 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
9959 | ||
9960 | if (strcmp (opd->name, ".opd") != 0 | |
9961 | || opd->reloc_count != 0) | |
9962 | { | |
bc30df16 | 9963 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 9964 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
9965 | bfd_set_error (bfd_error_bad_value); |
9966 | return 0; | |
9967 | } | |
9968 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
9969 | return 0; | |
9970 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 9971 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
9972 | } |
9973 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
9974 | return r2off; | |
9975 | } | |
9976 | ||
b34976b6 | 9977 | static bfd_boolean |
4ce794b7 | 9978 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9979 | { |
721956f4 AM |
9980 | struct ppc_stub_hash_entry *stub_entry; |
9981 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9982 | struct bfd_link_info *info; |
9983 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9984 | bfd_byte *loc; |
9985 | bfd_byte *p; | |
ee75fd95 | 9986 | bfd_vma dest, off; |
721956f4 | 9987 | int size; |
176a0d42 | 9988 | Elf_Internal_Rela *r; |
e054468f | 9989 | asection *plt; |
5d1634d7 | 9990 | |
721956f4 AM |
9991 | /* Massage our args to the form they really have. */ |
9992 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 9993 | info = in_arg; |
5d1634d7 | 9994 | |
5d1634d7 | 9995 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
9996 | if (htab == NULL) |
9997 | return FALSE; | |
5d1634d7 | 9998 | |
721956f4 | 9999 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10000 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10001 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10002 | |
4ce794b7 | 10003 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10004 | switch (stub_entry->stub_type) |
5d1634d7 | 10005 | { |
721956f4 | 10006 | case ppc_stub_long_branch: |
ad8e1ba5 | 10007 | case ppc_stub_long_branch_r2off: |
721956f4 | 10008 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
10009 | off = dest = (stub_entry->target_value |
10010 | + stub_entry->target_section->output_offset | |
10011 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 10012 | |
721956f4 AM |
10013 | /* And this is where we are coming from. */ |
10014 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10015 | + stub_entry->stub_sec->output_offset |
10016 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10017 | |
ac2df442 AM |
10018 | size = 4; |
10019 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10020 | { |
25f53a85 | 10021 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10022 | |
aa374f67 AM |
10023 | if (r2off == 0) |
10024 | { | |
10025 | htab->stub_error = TRUE; | |
10026 | return FALSE; | |
10027 | } | |
97b639ba | 10028 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 10029 | loc += 4; |
ac2df442 AM |
10030 | size = 12; |
10031 | if (PPC_HA (r2off) != 0) | |
10032 | { | |
10033 | size = 16; | |
10034 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10035 | loc += 4; | |
10036 | } | |
97b639ba | 10037 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10038 | loc += 4; |
ac2df442 | 10039 | off -= size - 4; |
ad8e1ba5 | 10040 | } |
97b639ba | 10041 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10042 | |
5c3dead3 AM |
10043 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10044 | { | |
bc30df16 AM |
10045 | info->callbacks->einfo |
10046 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10047 | stub_entry->root.string); | |
5c3dead3 AM |
10048 | htab->stub_error = TRUE; |
10049 | return FALSE; | |
10050 | } | |
ee75fd95 AM |
10051 | |
10052 | if (info->emitrelocations) | |
10053 | { | |
176a0d42 AM |
10054 | r = get_relocs (stub_entry->stub_sec, 1); |
10055 | if (r == NULL) | |
10056 | return FALSE; | |
ee75fd95 AM |
10057 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10058 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10059 | r->r_addend = dest; | |
10060 | if (stub_entry->h != NULL) | |
10061 | { | |
10062 | struct elf_link_hash_entry **hashes; | |
10063 | unsigned long symndx; | |
10064 | struct ppc_link_hash_entry *h; | |
10065 | ||
10066 | hashes = elf_sym_hashes (htab->stub_bfd); | |
10067 | if (hashes == NULL) | |
10068 | { | |
10069 | bfd_size_type hsize; | |
10070 | ||
10071 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10072 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
10073 | if (hashes == NULL) | |
10074 | return FALSE; | |
10075 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
10076 | htab->stub_globals = 1; | |
10077 | } | |
10078 | symndx = htab->stub_globals++; | |
10079 | h = stub_entry->h; | |
10080 | hashes[symndx] = &h->elf; | |
10081 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10082 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10083 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10084 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10085 | /* H is an opd symbol. The addend must be zero. */ | |
10086 | r->r_addend = 0; | |
10087 | else | |
10088 | { | |
10089 | off = (h->elf.root.u.def.value | |
10090 | + h->elf.root.u.def.section->output_offset | |
10091 | + h->elf.root.u.def.section->output_section->vma); | |
10092 | r->r_addend -= off; | |
10093 | } | |
10094 | } | |
10095 | } | |
721956f4 | 10096 | break; |
e86ce104 | 10097 | |
721956f4 | 10098 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10099 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10100 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10101 | stub_entry->root.string + 9, | |
b34976b6 | 10102 | FALSE, FALSE); |
721956f4 AM |
10103 | if (br_entry == NULL) |
10104 | { | |
8de848d8 | 10105 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10106 | stub_entry->root.string); |
b34976b6 AM |
10107 | htab->stub_error = TRUE; |
10108 | return FALSE; | |
721956f4 AM |
10109 | } |
10110 | ||
176a0d42 AM |
10111 | dest = (stub_entry->target_value |
10112 | + stub_entry->target_section->output_offset | |
10113 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 10114 | |
176a0d42 | 10115 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10116 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10117 | |
f94498ff | 10118 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10119 | { |
f94498ff | 10120 | br_entry->iter = 0; |
84f5d08e | 10121 | |
f94498ff | 10122 | if (htab->relbrlt != NULL) |
84f5d08e | 10123 | { |
f94498ff AM |
10124 | /* Create a reloc for the branch lookup table entry. */ |
10125 | Elf_Internal_Rela rela; | |
10126 | bfd_byte *rl; | |
10127 | ||
10128 | rela.r_offset = (br_entry->offset | |
10129 | + htab->brlt->output_offset | |
10130 | + htab->brlt->output_section->vma); | |
10131 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10132 | rela.r_addend = dest; |
f94498ff AM |
10133 | |
10134 | rl = htab->relbrlt->contents; | |
10135 | rl += (htab->relbrlt->reloc_count++ | |
10136 | * sizeof (Elf64_External_Rela)); | |
10137 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10138 | } | |
10139 | else if (info->emitrelocations) | |
10140 | { | |
176a0d42 AM |
10141 | r = get_relocs (htab->brlt, 1); |
10142 | if (r == NULL) | |
10143 | return FALSE; | |
10144 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10145 | normal reloc processing. Symbols and offsets are not | |
10146 | translated from input file to output file form, so | |
10147 | set up the offset per the output file. */ | |
f94498ff AM |
10148 | r->r_offset = (br_entry->offset |
10149 | + htab->brlt->output_offset | |
10150 | + htab->brlt->output_section->vma); | |
10151 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10152 | r->r_addend = dest; |
84f5d08e | 10153 | } |
84f5d08e | 10154 | } |
721956f4 | 10155 | |
176a0d42 AM |
10156 | dest = (br_entry->offset |
10157 | + htab->brlt->output_offset | |
10158 | + htab->brlt->output_section->vma); | |
10159 | ||
10160 | off = (dest | |
4ce794b7 | 10161 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10162 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10163 | |
ad8e1ba5 | 10164 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10165 | { |
25f53a85 | 10166 | info->callbacks->einfo |
bc30df16 | 10167 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10168 | stub_entry->root.string); |
5d1634d7 | 10169 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10170 | htab->stub_error = TRUE; |
10171 | return FALSE; | |
5d1634d7 | 10172 | } |
41bd81ab | 10173 | |
176a0d42 AM |
10174 | if (info->emitrelocations) |
10175 | { | |
10176 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10177 | if (r == NULL) | |
10178 | return FALSE; | |
10179 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10180 | if (bfd_big_endian (info->output_bfd)) |
10181 | r[0].r_offset += 2; | |
176a0d42 AM |
10182 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
10183 | r[0].r_offset += 4; | |
10184 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10185 | r[0].r_addend = dest; | |
10186 | if (PPC_HA (off) != 0) | |
10187 | { | |
10188 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10189 | r[1].r_offset = r[0].r_offset + 4; | |
10190 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10191 | r[1].r_addend = r[0].r_addend; | |
10192 | } | |
10193 | } | |
10194 | ||
ad8e1ba5 AM |
10195 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10196 | { | |
176a0d42 | 10197 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10198 | { |
10199 | size = 16; | |
176a0d42 | 10200 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10201 | loc += 4; |
176a0d42 | 10202 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10203 | } |
10204 | else | |
10205 | { | |
10206 | size = 12; | |
176a0d42 | 10207 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 10208 | } |
ad8e1ba5 AM |
10209 | } |
10210 | else | |
10211 | { | |
25f53a85 | 10212 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10213 | |
10214 | if (r2off == 0) | |
10215 | { | |
10216 | htab->stub_error = TRUE; | |
10217 | return FALSE; | |
10218 | } | |
ad8e1ba5 | 10219 | |
97b639ba | 10220 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 10221 | loc += 4; |
ac2df442 | 10222 | size = 20; |
176a0d42 | 10223 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10224 | { |
10225 | size += 4; | |
176a0d42 | 10226 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10227 | loc += 4; |
176a0d42 | 10228 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10229 | loc += 4; |
10230 | } | |
10231 | else | |
10232 | { | |
176a0d42 | 10233 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10234 | loc += 4; |
10235 | } | |
10236 | ||
10237 | if (PPC_HA (r2off) != 0) | |
10238 | { | |
10239 | size += 4; | |
10240 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10241 | loc += 4; | |
10242 | } | |
97b639ba | 10243 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
10244 | } |
10245 | loc += 4; | |
97b639ba | 10246 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 10247 | loc += 4; |
97b639ba | 10248 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 10249 | break; |
5d1634d7 | 10250 | |
721956f4 | 10251 | case ppc_stub_plt_call: |
794e51c0 | 10252 | case ppc_stub_plt_call_r2save: |
e054468f | 10253 | if (stub_entry->h != NULL |
b31867b6 AM |
10254 | && stub_entry->h->is_func_descriptor |
10255 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10256 | { |
b31867b6 AM |
10257 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10258 | ||
10259 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10260 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10261 | FIXME: We used to define the symbol on one of the call | |
10262 | stubs instead, which is why we test symbol section id | |
10263 | against htab->top_id in various places. Likely all | |
10264 | these checks could now disappear. */ | |
10265 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10266 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10267 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10268 | fh->was_undefined = 0; | |
c862ae31 AM |
10269 | } |
10270 | ||
721956f4 | 10271 | /* Now build the stub. */ |
e054468f | 10272 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10273 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10274 | abort (); |
10275 | ||
e054468f | 10276 | plt = htab->plt; |
25f23106 AM |
10277 | if (!htab->elf.dynamic_sections_created |
10278 | || stub_entry->h == NULL | |
10279 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
10280 | plt = htab->iplt; |
10281 | ||
10282 | dest += plt->output_offset + plt->output_section->vma; | |
10283 | ||
10284 | if (stub_entry->h == NULL | |
10285 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10286 | { | |
10287 | Elf_Internal_Rela rela; | |
10288 | bfd_byte *rl; | |
10289 | ||
10290 | rela.r_offset = dest; | |
25f23106 | 10291 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
10292 | rela.r_addend = (stub_entry->target_value |
10293 | + stub_entry->target_section->output_offset | |
10294 | + stub_entry->target_section->output_section->vma); | |
10295 | ||
25f23106 AM |
10296 | rl = (htab->reliplt->contents |
10297 | + (htab->reliplt->reloc_count++ | |
10298 | * sizeof (Elf64_External_Rela))); | |
10299 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10300 | stub_entry->plt_ent->plt.offset |= 1; |
10301 | } | |
176a0d42 AM |
10302 | |
10303 | off = (dest | |
e054468f | 10304 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10305 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10306 | |
ad8e1ba5 | 10307 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10308 | { |
25f53a85 | 10309 | info->callbacks->einfo |
bc30df16 | 10310 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10311 | stub_entry->h != NULL |
10312 | ? stub_entry->h->elf.root.root.string | |
10313 | : "<local sym>"); | |
721956f4 | 10314 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10315 | htab->stub_error = TRUE; |
10316 | return FALSE; | |
721956f4 AM |
10317 | } |
10318 | ||
794e51c0 AM |
10319 | if (htab->plt_stub_align != 0) |
10320 | { | |
10321 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10322 | ||
10323 | stub_entry->stub_sec->size += pad; | |
10324 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10325 | loc += pad; | |
10326 | } | |
10327 | ||
176a0d42 AM |
10328 | r = NULL; |
10329 | if (info->emitrelocations) | |
10330 | { | |
10331 | r = get_relocs (stub_entry->stub_sec, | |
c7131b65 AM |
10332 | (2 |
10333 | + (PPC_HA (off) != 0) | |
10334 | + (htab->plt_static_chain | |
10335 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
176a0d42 AM |
10336 | if (r == NULL) |
10337 | return FALSE; | |
10338 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10339 | if (bfd_big_endian (info->output_bfd)) |
10340 | r[0].r_offset += 2; | |
176a0d42 AM |
10341 | r[0].r_addend = dest; |
10342 | } | |
a7f2871e AM |
10343 | if (stub_entry->h != NULL |
10344 | && (stub_entry->h == htab->tls_get_addr_fd | |
10345 | || stub_entry->h == htab->tls_get_addr) | |
10346 | && !htab->no_tls_get_addr_opt) | |
794e51c0 | 10347 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10348 | else |
794e51c0 | 10349 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10350 | size = p - loc; |
10351 | break; | |
10352 | ||
10353 | default: | |
10354 | BFD_FAIL (); | |
b34976b6 | 10355 | return FALSE; |
721956f4 AM |
10356 | } |
10357 | ||
eea6121a | 10358 | stub_entry->stub_sec->size += size; |
97b639ba | 10359 | |
ee75fd95 | 10360 | if (htab->emit_stub_syms) |
97b639ba AM |
10361 | { |
10362 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10363 | size_t len1, len2; |
10364 | char *name; | |
10365 | const char *const stub_str[] = { "long_branch", | |
10366 | "long_branch_r2off", | |
10367 | "plt_branch", | |
10368 | "plt_branch_r2off", | |
794e51c0 | 10369 | "plt_call", |
ee75fd95 AM |
10370 | "plt_call" }; |
10371 | ||
10372 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10373 | len2 = strlen (stub_entry->root.string); | |
10374 | name = bfd_malloc (len1 + len2 + 2); | |
10375 | if (name == NULL) | |
10376 | return FALSE; | |
10377 | memcpy (name, stub_entry->root.string, 9); | |
10378 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10379 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10380 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10381 | if (h == NULL) |
10382 | return FALSE; | |
10383 | if (h->root.type == bfd_link_hash_new) | |
10384 | { | |
10385 | h->root.type = bfd_link_hash_defined; | |
10386 | h->root.u.def.section = stub_entry->stub_sec; | |
10387 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10388 | h->ref_regular = 1; |
10389 | h->def_regular = 1; | |
10390 | h->ref_regular_nonweak = 1; | |
10391 | h->forced_local = 1; | |
10392 | h->non_elf = 0; | |
97b639ba AM |
10393 | } |
10394 | } | |
10395 | ||
b34976b6 | 10396 | return TRUE; |
721956f4 AM |
10397 | } |
10398 | ||
10399 | /* As above, but don't actually build the stub. Just bump offset so | |
10400 | we know stub section sizes, and select plt_branch stubs where | |
10401 | long_branch stubs won't do. */ | |
10402 | ||
b34976b6 | 10403 | static bfd_boolean |
4ce794b7 | 10404 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10405 | { |
10406 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10407 | struct bfd_link_info *info; |
721956f4 AM |
10408 | struct ppc_link_hash_table *htab; |
10409 | bfd_vma off; | |
10410 | int size; | |
10411 | ||
10412 | /* Massage our args to the form they really have. */ | |
10413 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10414 | info = in_arg; |
10415 | ||
10416 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10417 | if (htab == NULL) |
10418 | return FALSE; | |
721956f4 | 10419 | |
794e51c0 AM |
10420 | if (stub_entry->stub_type == ppc_stub_plt_call |
10421 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10422 | { |
e054468f AM |
10423 | asection *plt; |
10424 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10425 | if (off >= (bfd_vma) -2) |
411e1bfb | 10426 | abort (); |
e054468f | 10427 | plt = htab->plt; |
25f23106 AM |
10428 | if (!htab->elf.dynamic_sections_created |
10429 | || stub_entry->h == NULL | |
10430 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
10431 | plt = htab->iplt; |
10432 | off += (plt->output_offset | |
10433 | + plt->output_section->vma | |
10434 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10435 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10436 | |
794e51c0 AM |
10437 | size = plt_stub_size (htab, stub_entry, off); |
10438 | if (htab->plt_stub_align) | |
10439 | size += plt_stub_pad (htab, stub_entry, off); | |
176a0d42 AM |
10440 | if (info->emitrelocations) |
10441 | { | |
10442 | stub_entry->stub_sec->reloc_count | |
c7131b65 AM |
10443 | += (2 |
10444 | + (PPC_HA (off) != 0) | |
10445 | + (htab->plt_static_chain | |
10446 | && PPC_HA (off + 16) == PPC_HA (off))); | |
176a0d42 AM |
10447 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10448 | } | |
721956f4 AM |
10449 | } |
10450 | else | |
10451 | { | |
ad8e1ba5 AM |
10452 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10453 | variants. */ | |
ac2df442 AM |
10454 | bfd_vma r2off = 0; |
10455 | ||
721956f4 AM |
10456 | off = (stub_entry->target_value |
10457 | + stub_entry->target_section->output_offset | |
10458 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10459 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10460 | + stub_entry->stub_sec->output_offset |
10461 | + stub_entry->stub_sec->output_section->vma); | |
10462 | ||
ad8e1ba5 AM |
10463 | /* Reset the stub type from the plt variant in case we now |
10464 | can reach with a shorter stub. */ | |
10465 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10466 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10467 | ||
10468 | size = 4; | |
10469 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10470 | { | |
25f53a85 | 10471 | r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10472 | if (r2off == 0) |
10473 | { | |
10474 | htab->stub_error = TRUE; | |
10475 | return FALSE; | |
10476 | } | |
ac2df442 AM |
10477 | size = 12; |
10478 | if (PPC_HA (r2off) != 0) | |
10479 | size = 16; | |
10480 | off -= size - 4; | |
ad8e1ba5 AM |
10481 | } |
10482 | ||
10483 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
10484 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10485 | { | |
10486 | struct ppc_branch_hash_entry *br_entry; | |
10487 | ||
10488 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10489 | stub_entry->root.string + 9, | |
b34976b6 | 10490 | TRUE, FALSE); |
721956f4 AM |
10491 | if (br_entry == NULL) |
10492 | { | |
8de848d8 | 10493 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10494 | stub_entry->root.string); |
b34976b6 AM |
10495 | htab->stub_error = TRUE; |
10496 | return FALSE; | |
721956f4 AM |
10497 | } |
10498 | ||
10499 | if (br_entry->iter != htab->stub_iteration) | |
10500 | { | |
10501 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10502 | br_entry->offset = htab->brlt->size; |
10503 | htab->brlt->size += 8; | |
63bc6f6c | 10504 | |
ee75fd95 | 10505 | if (htab->relbrlt != NULL) |
eea6121a | 10506 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10507 | else if (info->emitrelocations) |
10508 | { | |
10509 | htab->brlt->reloc_count += 1; | |
10510 | htab->brlt->flags |= SEC_RELOC; | |
10511 | } | |
721956f4 | 10512 | } |
ad8e1ba5 AM |
10513 | |
10514 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10515 | off = (br_entry->offset |
10516 | + htab->brlt->output_offset | |
10517 | + htab->brlt->output_section->vma | |
10518 | - elf_gp (htab->brlt->output_section->owner) | |
10519 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10520 | ||
176a0d42 AM |
10521 | if (info->emitrelocations) |
10522 | { | |
10523 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10524 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10525 | } | |
10526 | ||
ac2df442 AM |
10527 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10528 | { | |
10529 | size = 12; | |
176a0d42 | 10530 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10531 | size = 16; |
10532 | } | |
10533 | else | |
10534 | { | |
10535 | size = 20; | |
176a0d42 | 10536 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10537 | size += 4; |
10538 | ||
10539 | if (PPC_HA (r2off) != 0) | |
10540 | size += 4; | |
10541 | } | |
721956f4 | 10542 | } |
84f5d08e AM |
10543 | else if (info->emitrelocations) |
10544 | { | |
10545 | stub_entry->stub_sec->reloc_count += 1; | |
10546 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10547 | } | |
721956f4 AM |
10548 | } |
10549 | ||
eea6121a | 10550 | stub_entry->stub_sec->size += size; |
b34976b6 | 10551 | return TRUE; |
721956f4 AM |
10552 | } |
10553 | ||
10554 | /* Set up various things so that we can make a list of input sections | |
10555 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10556 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10557 | |
10558 | int | |
927be08e AM |
10559 | ppc64_elf_setup_section_lists |
10560 | (struct bfd_link_info *info, | |
10561 | asection *(*add_stub_section) (const char *, asection *), | |
10562 | void (*layout_sections_again) (void)) | |
721956f4 AM |
10563 | { |
10564 | bfd *input_bfd; | |
734b6cf9 | 10565 | int top_id, top_index, id; |
721956f4 | 10566 | asection *section; |
734b6cf9 | 10567 | asection **input_list; |
721956f4 AM |
10568 | bfd_size_type amt; |
10569 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10570 | ||
4dfe6ac6 NC |
10571 | if (htab == NULL) |
10572 | return -1; | |
927be08e AM |
10573 | /* Stash our params away. */ |
10574 | htab->add_stub_section = add_stub_section; | |
10575 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 10576 | |
1e2f5b6e | 10577 | /* Find the top input section id. */ |
3d6f9012 | 10578 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
10579 | input_bfd != NULL; |
10580 | input_bfd = input_bfd->link_next) | |
10581 | { | |
721956f4 AM |
10582 | for (section = input_bfd->sections; |
10583 | section != NULL; | |
10584 | section = section->next) | |
10585 | { | |
10586 | if (top_id < section->id) | |
10587 | top_id = section->id; | |
10588 | } | |
10589 | } | |
721956f4 | 10590 | |
8f3bab57 | 10591 | htab->top_id = top_id; |
721956f4 | 10592 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 10593 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
10594 | if (htab->stub_group == NULL) |
10595 | return -1; | |
10596 | ||
3d6f9012 AM |
10597 | /* Set toc_off for com, und, abs and ind sections. */ |
10598 | for (id = 0; id < 3; id++) | |
10599 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 10600 | |
734b6cf9 AM |
10601 | /* We can't use output_bfd->section_count here to find the top output |
10602 | section index as some sections may have been removed, and | |
8423293d | 10603 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 10604 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
10605 | section != NULL; |
10606 | section = section->next) | |
10607 | { | |
10608 | if (top_index < section->index) | |
10609 | top_index = section->index; | |
10610 | } | |
10611 | ||
10612 | htab->top_index = top_index; | |
10613 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 10614 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
10615 | htab->input_list = input_list; |
10616 | if (input_list == NULL) | |
10617 | return -1; | |
10618 | ||
721956f4 AM |
10619 | return 1; |
10620 | } | |
10621 | ||
927be08e AM |
10622 | /* Set up for first pass at multitoc partitioning. */ |
10623 | ||
10624 | void | |
10625 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
10626 | { | |
10627 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10628 | ||
1c865ab2 | 10629 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
10630 | htab->toc_bfd = NULL; |
10631 | htab->toc_first_sec = NULL; | |
10632 | } | |
10633 | ||
e717da7e AM |
10634 | /* The linker repeatedly calls this function for each TOC input section |
10635 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 10636 | within a group is less than 64k in size. */ |
ad8e1ba5 | 10637 | |
927be08e | 10638 | bfd_boolean |
4ce794b7 | 10639 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
10640 | { |
10641 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 10642 | bfd_vma addr, off, limit; |
ad8e1ba5 | 10643 | |
4dfe6ac6 NC |
10644 | if (htab == NULL) |
10645 | return FALSE; | |
10646 | ||
927be08e | 10647 | if (!htab->second_toc_pass) |
4c52953f | 10648 | { |
927be08e | 10649 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
10650 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
10651 | ||
10652 | if (new_bfd) | |
bf102f86 AM |
10653 | { |
10654 | htab->toc_bfd = isec->owner; | |
10655 | htab->toc_first_sec = isec; | |
10656 | } | |
927be08e | 10657 | |
bf102f86 AM |
10658 | addr = isec->output_offset + isec->output_section->vma; |
10659 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
10660 | limit = 0x80008000; |
10661 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
10662 | limit = 0x10000; | |
10663 | if (off + isec->size > limit) | |
bf102f86 AM |
10664 | { |
10665 | addr = (htab->toc_first_sec->output_offset | |
10666 | + htab->toc_first_sec->output_section->vma); | |
10667 | htab->toc_curr = addr; | |
10668 | } | |
99877b66 | 10669 | |
927be08e AM |
10670 | /* toc_curr is the base address of this toc group. Set elf_gp |
10671 | for the input section to be the offset relative to the | |
10672 | output toc base plus 0x8000. Making the input elf_gp an | |
10673 | offset allows us to move the toc as a whole without | |
10674 | recalculating input elf_gp. */ | |
10675 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
10676 | off += TOC_BASE_OFF; | |
10677 | ||
10678 | /* Die if someone uses a linker script that doesn't keep input | |
10679 | file .toc and .got together. */ | |
a4fd3de5 AM |
10680 | if (new_bfd |
10681 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
10682 | && elf_gp (isec->owner) != off) |
10683 | return FALSE; | |
10684 | ||
10685 | elf_gp (isec->owner) = off; | |
10686 | return TRUE; | |
4c52953f | 10687 | } |
927be08e AM |
10688 | |
10689 | /* During the second pass toc_first_sec points to the start of | |
10690 | a toc group, and toc_curr is used to track the old elf_gp. | |
10691 | We use toc_bfd to ensure we only look at each bfd once. */ | |
10692 | if (htab->toc_bfd == isec->owner) | |
10693 | return TRUE; | |
10694 | htab->toc_bfd = isec->owner; | |
10695 | ||
10696 | if (htab->toc_first_sec == NULL | |
10697 | || htab->toc_curr != elf_gp (isec->owner)) | |
10698 | { | |
10699 | htab->toc_curr = elf_gp (isec->owner); | |
10700 | htab->toc_first_sec = isec; | |
10701 | } | |
10702 | addr = (htab->toc_first_sec->output_offset | |
10703 | + htab->toc_first_sec->output_section->vma); | |
10704 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
10705 | elf_gp (isec->owner) = off; | |
10706 | ||
10707 | return TRUE; | |
ad8e1ba5 AM |
10708 | } |
10709 | ||
927be08e AM |
10710 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
10711 | symbol H. */ | |
10712 | ||
10713 | static bfd_boolean | |
10714 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10715 | { | |
10716 | if (h->root.type == bfd_link_hash_indirect) | |
10717 | return TRUE; | |
10718 | ||
927be08e AM |
10719 | merge_got_entries (&h->got.glist); |
10720 | ||
10721 | return TRUE; | |
10722 | } | |
10723 | ||
10724 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
10725 | symbol H. */ | |
10726 | ||
10727 | static bfd_boolean | |
10728 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
10729 | { | |
10730 | struct got_entry *gent; | |
10731 | ||
10732 | if (h->root.type == bfd_link_hash_indirect) | |
10733 | return TRUE; | |
10734 | ||
927be08e AM |
10735 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
10736 | if (!gent->is_indirect) | |
10737 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
10738 | return TRUE; | |
10739 | } | |
10740 | ||
10741 | /* Called on the first multitoc pass after the last call to | |
10742 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
10743 | entries. */ | |
10744 | ||
10745 | bfd_boolean | |
10746 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
10747 | { |
10748 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
10749 | struct bfd *ibfd, *ibfd2; |
10750 | bfd_boolean done_something; | |
10751 | ||
10752 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 10753 | |
7865406b AM |
10754 | if (!htab->do_multi_toc) |
10755 | return FALSE; | |
10756 | ||
d0fae19d | 10757 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
10758 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
10759 | ||
10760 | /* And tlsld_got. */ | |
10761 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10762 | { | |
10763 | struct got_entry *ent, *ent2; | |
10764 | ||
10765 | if (!is_ppc64_elf (ibfd)) | |
10766 | continue; | |
10767 | ||
10768 | ent = ppc64_tlsld_got (ibfd); | |
10769 | if (!ent->is_indirect | |
10770 | && ent->got.offset != (bfd_vma) -1) | |
10771 | { | |
10772 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
10773 | { | |
10774 | if (!is_ppc64_elf (ibfd2)) | |
10775 | continue; | |
10776 | ||
10777 | ent2 = ppc64_tlsld_got (ibfd2); | |
10778 | if (!ent2->is_indirect | |
10779 | && ent2->got.offset != (bfd_vma) -1 | |
10780 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
10781 | { | |
10782 | ent2->is_indirect = TRUE; | |
10783 | ent2->got.ent = ent; | |
10784 | } | |
10785 | } | |
10786 | } | |
10787 | } | |
10788 | ||
10789 | /* Zap sizes of got sections. */ | |
10790 | htab->reliplt->rawsize = htab->reliplt->size; | |
10791 | htab->reliplt->size -= htab->got_reli_size; | |
10792 | htab->got_reli_size = 0; | |
10793 | ||
10794 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10795 | { | |
10796 | asection *got, *relgot; | |
10797 | ||
10798 | if (!is_ppc64_elf (ibfd)) | |
10799 | continue; | |
10800 | ||
10801 | got = ppc64_elf_tdata (ibfd)->got; | |
10802 | if (got != NULL) | |
10803 | { | |
10804 | got->rawsize = got->size; | |
10805 | got->size = 0; | |
10806 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
10807 | relgot->rawsize = relgot->size; | |
10808 | relgot->size = 0; | |
10809 | } | |
10810 | } | |
10811 | ||
10812 | /* Now reallocate the got, local syms first. We don't need to | |
10813 | allocate section contents again since we never increase size. */ | |
10814 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10815 | { | |
10816 | struct got_entry **lgot_ents; | |
10817 | struct got_entry **end_lgot_ents; | |
10818 | struct plt_entry **local_plt; | |
10819 | struct plt_entry **end_local_plt; | |
f961d9dd | 10820 | unsigned char *lgot_masks; |
927be08e AM |
10821 | bfd_size_type locsymcount; |
10822 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 10823 | asection *s; |
927be08e AM |
10824 | |
10825 | if (!is_ppc64_elf (ibfd)) | |
10826 | continue; | |
10827 | ||
10828 | lgot_ents = elf_local_got_ents (ibfd); | |
10829 | if (!lgot_ents) | |
10830 | continue; | |
10831 | ||
10832 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10833 | locsymcount = symtab_hdr->sh_info; | |
10834 | end_lgot_ents = lgot_ents + locsymcount; | |
10835 | local_plt = (struct plt_entry **) end_lgot_ents; | |
10836 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10837 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 10838 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
10839 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
10840 | { | |
10841 | struct got_entry *ent; | |
10842 | ||
10843 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 10844 | { |
19e08130 AM |
10845 | unsigned int ent_size = 8; |
10846 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10847 | ||
d0fae19d AM |
10848 | ent->got.offset = s->size; |
10849 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 10850 | { |
19e08130 AM |
10851 | ent_size *= 2; |
10852 | rel_size *= 2; | |
10853 | } | |
10854 | s->size += ent_size; | |
10855 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
10856 | { | |
10857 | htab->reliplt->size += rel_size; | |
10858 | htab->got_reli_size += rel_size; | |
10859 | } | |
10860 | else if (info->shared) | |
10861 | { | |
10862 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10863 | srel->size += rel_size; | |
d0fae19d AM |
10864 | } |
10865 | } | |
927be08e AM |
10866 | } |
10867 | } | |
10868 | ||
10869 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
10870 | ||
10871 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10872 | { | |
10873 | struct got_entry *ent; | |
10874 | ||
10875 | if (!is_ppc64_elf (ibfd)) | |
10876 | continue; | |
10877 | ||
10878 | ent = ppc64_tlsld_got (ibfd); | |
10879 | if (!ent->is_indirect | |
10880 | && ent->got.offset != (bfd_vma) -1) | |
10881 | { | |
10882 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
10883 | ent->got.offset = s->size; | |
10884 | s->size += 16; | |
10885 | if (info->shared) | |
10886 | { | |
10887 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10888 | srel->size += sizeof (Elf64_External_Rela); | |
10889 | } | |
10890 | } | |
10891 | } | |
10892 | ||
10893 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
10894 | if (!done_something) | |
10895 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10896 | { | |
10897 | asection *got; | |
10898 | ||
10899 | if (!is_ppc64_elf (ibfd)) | |
10900 | continue; | |
10901 | ||
10902 | got = ppc64_elf_tdata (ibfd)->got; | |
10903 | if (got != NULL) | |
10904 | { | |
10905 | done_something = got->rawsize != got->size; | |
10906 | if (done_something) | |
10907 | break; | |
10908 | } | |
10909 | } | |
10910 | ||
10911 | if (done_something) | |
10912 | (*htab->layout_sections_again) (); | |
10913 | ||
10914 | /* Set up for second pass over toc sections to recalculate elf_gp | |
10915 | on input sections. */ | |
10916 | htab->toc_bfd = NULL; | |
10917 | htab->toc_first_sec = NULL; | |
10918 | htab->second_toc_pass = TRUE; | |
10919 | return done_something; | |
10920 | } | |
10921 | ||
10922 | /* Called after second pass of multitoc partitioning. */ | |
10923 | ||
10924 | void | |
10925 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
10926 | { | |
10927 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10928 | ||
10929 | /* After the second pass, toc_curr tracks the TOC offset used | |
10930 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 10931 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
10932 | } |
10933 | ||
9b5ecbd0 AM |
10934 | /* No toc references were found in ISEC. If the code in ISEC makes no |
10935 | calls, then there's no need to use toc adjusting stubs when branching | |
10936 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
10937 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
10938 | needed, and 2 if a cyclical call-graph was found but no other reason | |
10939 | for a stub was detected. If called from the top level, a return of | |
10940 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
10941 | |
10942 | static int | |
4ce794b7 | 10943 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 10944 | { |
9b5ecbd0 | 10945 | int ret; |
70cc837d AM |
10946 | |
10947 | /* Mark this section as checked. */ | |
10948 | isec->call_check_done = 1; | |
9b5ecbd0 | 10949 | |
772119ce AM |
10950 | /* We know none of our code bearing sections will need toc stubs. */ |
10951 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
10952 | return 0; | |
10953 | ||
eea6121a | 10954 | if (isec->size == 0) |
082c50f8 AM |
10955 | return 0; |
10956 | ||
4c52953f AM |
10957 | if (isec->output_section == NULL) |
10958 | return 0; | |
10959 | ||
4c52953f | 10960 | ret = 0; |
70cc837d | 10961 | if (isec->reloc_count != 0) |
9b5ecbd0 | 10962 | { |
70cc837d AM |
10963 | Elf_Internal_Rela *relstart, *rel; |
10964 | Elf_Internal_Sym *local_syms; | |
10965 | struct ppc_link_hash_table *htab; | |
2917689a | 10966 | |
70cc837d AM |
10967 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
10968 | info->keep_memory); | |
10969 | if (relstart == NULL) | |
10970 | return -1; | |
90aecf7a | 10971 | |
70cc837d AM |
10972 | /* Look for branches to outside of this section. */ |
10973 | local_syms = NULL; | |
10974 | htab = ppc_hash_table (info); | |
10975 | if (htab == NULL) | |
10976 | return -1; | |
4c52953f | 10977 | |
70cc837d | 10978 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 10979 | { |
70cc837d AM |
10980 | enum elf_ppc64_reloc_type r_type; |
10981 | unsigned long r_symndx; | |
10982 | struct elf_link_hash_entry *h; | |
10983 | struct ppc_link_hash_entry *eh; | |
10984 | Elf_Internal_Sym *sym; | |
10985 | asection *sym_sec; | |
10986 | struct _opd_sec_data *opd; | |
10987 | bfd_vma sym_value; | |
10988 | bfd_vma dest; | |
10989 | ||
10990 | r_type = ELF64_R_TYPE (rel->r_info); | |
10991 | if (r_type != R_PPC64_REL24 | |
10992 | && r_type != R_PPC64_REL14 | |
10993 | && r_type != R_PPC64_REL14_BRTAKEN | |
10994 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
10995 | continue; | |
4c52953f | 10996 | |
70cc837d AM |
10997 | r_symndx = ELF64_R_SYM (rel->r_info); |
10998 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
10999 | isec->owner)) | |
4c52953f | 11000 | { |
70cc837d AM |
11001 | ret = -1; |
11002 | break; | |
11003 | } | |
4c52953f | 11004 | |
70cc837d AM |
11005 | /* Calls to dynamic lib functions go through a plt call stub |
11006 | that uses r2. */ | |
11007 | eh = (struct ppc_link_hash_entry *) h; | |
11008 | if (eh != NULL | |
11009 | && (eh->elf.plt.plist != NULL | |
11010 | || (eh->oh != NULL | |
11011 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11012 | { | |
11013 | ret = 1; | |
11014 | break; | |
4c52953f AM |
11015 | } |
11016 | ||
70cc837d AM |
11017 | if (sym_sec == NULL) |
11018 | /* Ignore other undefined symbols. */ | |
4c52953f | 11019 | continue; |
4c52953f | 11020 | |
70cc837d AM |
11021 | /* Assume branches to other sections not included in the |
11022 | link need stubs too, to cover -R and absolute syms. */ | |
11023 | if (sym_sec->output_section == NULL) | |
11024 | { | |
11025 | ret = 1; | |
11026 | break; | |
11027 | } | |
4c52953f | 11028 | |
70cc837d AM |
11029 | if (h == NULL) |
11030 | sym_value = sym->st_value; | |
11031 | else | |
11032 | { | |
11033 | if (h->root.type != bfd_link_hash_defined | |
11034 | && h->root.type != bfd_link_hash_defweak) | |
11035 | abort (); | |
11036 | sym_value = h->root.u.def.value; | |
11037 | } | |
11038 | sym_value += rel->r_addend; | |
4c52953f | 11039 | |
70cc837d AM |
11040 | /* If this branch reloc uses an opd sym, find the code section. */ |
11041 | opd = get_opd_info (sym_sec); | |
11042 | if (opd != NULL) | |
11043 | { | |
11044 | if (h == NULL && opd->adjust != NULL) | |
11045 | { | |
11046 | long adjust; | |
4c52953f | 11047 | |
70cc837d AM |
11048 | adjust = opd->adjust[sym->st_value / 8]; |
11049 | if (adjust == -1) | |
11050 | /* Assume deleted functions won't ever be called. */ | |
11051 | continue; | |
11052 | sym_value += adjust; | |
11053 | } | |
4c52953f | 11054 | |
aef36ac1 AM |
11055 | dest = opd_entry_value (sym_sec, sym_value, |
11056 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11057 | if (dest == (bfd_vma) -1) |
11058 | continue; | |
11059 | } | |
11060 | else | |
11061 | dest = (sym_value | |
11062 | + sym_sec->output_offset | |
11063 | + sym_sec->output_section->vma); | |
4c52953f | 11064 | |
70cc837d AM |
11065 | /* Ignore branch to self. */ |
11066 | if (sym_sec == isec) | |
11067 | continue; | |
4c52953f | 11068 | |
70cc837d AM |
11069 | /* If the called function uses the toc, we need a stub. */ |
11070 | if (sym_sec->has_toc_reloc | |
11071 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11072 | { |
70cc837d | 11073 | ret = 1; |
4c52953f AM |
11074 | break; |
11075 | } | |
70cc837d AM |
11076 | |
11077 | /* Assume any branch that needs a long branch stub might in fact | |
11078 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11079 | else if (dest - (isec->output_offset | |
11080 | + isec->output_section->vma | |
11081 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
4c52953f | 11082 | { |
70cc837d AM |
11083 | ret = 1; |
11084 | break; | |
11085 | } | |
11086 | ||
11087 | /* If calling back to a section in the process of being | |
11088 | tested, we can't say for sure that no toc adjusting stubs | |
11089 | are needed, so don't return zero. */ | |
11090 | else if (sym_sec->call_check_in_progress) | |
11091 | ret = 2; | |
11092 | ||
11093 | /* Branches to another section that itself doesn't have any TOC | |
11094 | references are OK. Recursively call ourselves to check. */ | |
11095 | else if (!sym_sec->call_check_done) | |
11096 | { | |
11097 | int recur; | |
11098 | ||
11099 | /* Mark current section as indeterminate, so that other | |
11100 | sections that call back to current won't be marked as | |
11101 | known. */ | |
11102 | isec->call_check_in_progress = 1; | |
11103 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11104 | isec->call_check_in_progress = 0; | |
11105 | ||
4c52953f AM |
11106 | if (recur != 0) |
11107 | { | |
70cc837d AM |
11108 | ret = recur; |
11109 | if (recur != 2) | |
11110 | break; | |
4c52953f AM |
11111 | } |
11112 | } | |
4c52953f | 11113 | } |
70cc837d AM |
11114 | |
11115 | if (local_syms != NULL | |
11116 | && (elf_symtab_hdr (isec->owner).contents | |
11117 | != (unsigned char *) local_syms)) | |
11118 | free (local_syms); | |
11119 | if (elf_section_data (isec)->relocs != relstart) | |
11120 | free (relstart); | |
9b5ecbd0 AM |
11121 | } |
11122 | ||
70cc837d AM |
11123 | if ((ret & 1) == 0 |
11124 | && isec->map_head.s != NULL | |
11125 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11126 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11127 | { | |
11128 | if (isec->map_head.s->has_toc_reloc | |
11129 | || isec->map_head.s->makes_toc_func_call) | |
11130 | ret = 1; | |
11131 | else if (!isec->map_head.s->call_check_done) | |
11132 | { | |
11133 | int recur; | |
11134 | isec->call_check_in_progress = 1; | |
11135 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11136 | isec->call_check_in_progress = 0; | |
11137 | if (recur != 0) | |
11138 | ret = recur; | |
11139 | } | |
11140 | } | |
11141 | ||
11142 | if (ret == 1) | |
11143 | isec->makes_toc_func_call = 1; | |
4c52953f | 11144 | |
9b5ecbd0 AM |
11145 | return ret; |
11146 | } | |
11147 | ||
721956f4 AM |
11148 | /* The linker repeatedly calls this function for each input section, |
11149 | in the order that input sections are linked into output sections. | |
11150 | Build lists of input sections to determine groupings between which | |
11151 | we may insert linker stubs. */ | |
11152 | ||
9b5ecbd0 | 11153 | bfd_boolean |
4ce794b7 | 11154 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11155 | { |
11156 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11157 | ||
4dfe6ac6 NC |
11158 | if (htab == NULL) |
11159 | return FALSE; | |
11160 | ||
734b6cf9 AM |
11161 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11162 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11163 | { |
734b6cf9 | 11164 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11165 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11166 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11167 | /* This happens to make the list in reverse order, |
11168 | which is what we want. */ | |
734b6cf9 AM |
11169 | PREV_SEC (isec) = *list; |
11170 | *list = isec; | |
721956f4 | 11171 | } |
ad8e1ba5 | 11172 | |
4c52953f | 11173 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11174 | { |
4c52953f AM |
11175 | /* If a code section has a function that uses the TOC then we need |
11176 | to use the right TOC (obviously). Also, make sure that .opd gets | |
11177 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
11178 | can't find their function symbol (shouldn't ever happen now). |
11179 | Also specially treat .fixup for the linux kernel. .fixup | |
11180 | contains branches, but only back to the function that hit an | |
11181 | exception. */ | |
11182 | if (isec->has_toc_reloc | |
11183 | || (isec->flags & SEC_CODE) == 0 | |
11184 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
11185 | { |
11186 | if (elf_gp (isec->owner) != 0) | |
11187 | htab->toc_curr = elf_gp (isec->owner); | |
11188 | } | |
6683a28d AM |
11189 | else |
11190 | { | |
11191 | if (!isec->call_check_done | |
11192 | && toc_adjusting_stub_needed (info, isec) < 0) | |
11193 | return FALSE; | |
11194 | /* If we make a local call from this section, ie. a branch | |
11195 | without a following nop, then we have no place to put a | |
11196 | toc restoring insn. We must use the same toc group as | |
11197 | the callee. | |
11198 | Testing makes_toc_func_call actually tests for *any* | |
11199 | calls to functions that need a good toc pointer. A more | |
11200 | precise test would be better, as this one will set | |
11201 | incorrect values for pasted .init/.fini fragments. | |
11202 | (Fixed later in check_pasted_section.) */ | |
11203 | if (isec->makes_toc_func_call | |
11204 | && elf_gp (isec->owner) != 0) | |
11205 | htab->toc_curr = elf_gp (isec->owner); | |
11206 | } | |
9b5ecbd0 | 11207 | } |
ad8e1ba5 AM |
11208 | |
11209 | /* Functions that don't use the TOC can belong in any TOC group. | |
6683a28d | 11210 | Use the last TOC base. */ |
ad8e1ba5 | 11211 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11212 | return TRUE; |
721956f4 AM |
11213 | } |
11214 | ||
70cc837d AM |
11215 | /* Check that all .init and .fini sections use the same toc, if they |
11216 | have toc relocs. */ | |
11217 | ||
11218 | static bfd_boolean | |
11219 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11220 | { | |
11221 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11222 | ||
11223 | if (o != NULL) | |
11224 | { | |
11225 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11226 | bfd_vma toc_off = 0; | |
11227 | asection *i; | |
11228 | ||
11229 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11230 | if (i->has_toc_reloc) | |
11231 | { | |
11232 | if (toc_off == 0) | |
11233 | toc_off = htab->stub_group[i->id].toc_off; | |
11234 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11235 | return FALSE; | |
11236 | } | |
6683a28d AM |
11237 | |
11238 | if (toc_off == 0) | |
11239 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11240 | if (i->makes_toc_func_call) | |
11241 | { | |
11242 | toc_off = htab->stub_group[i->id].toc_off; | |
11243 | break; | |
11244 | } | |
11245 | ||
70cc837d AM |
11246 | /* Make sure the whole pasted function uses the same toc offset. */ |
11247 | if (toc_off != 0) | |
11248 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11249 | htab->stub_group[i->id].toc_off = toc_off; | |
11250 | } | |
11251 | return TRUE; | |
11252 | } | |
11253 | ||
11254 | bfd_boolean | |
11255 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11256 | { | |
11257 | return (check_pasted_section (info, ".init") | |
11258 | & check_pasted_section (info, ".fini")); | |
11259 | } | |
11260 | ||
721956f4 AM |
11261 | /* See whether we can group stub sections together. Grouping stub |
11262 | sections may result in fewer stubs. More importantly, we need to | |
11263 | put all .init* and .fini* stubs at the beginning of the .init or | |
11264 | .fini output sections respectively, because glibc splits the | |
11265 | _init and _fini functions into multiple parts. Putting a stub in | |
11266 | the middle of a function is not a good idea. */ | |
11267 | ||
11268 | static void | |
4ce794b7 AM |
11269 | group_sections (struct ppc_link_hash_table *htab, |
11270 | bfd_size_type stub_group_size, | |
11271 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11272 | { |
7c8fe5c4 AM |
11273 | asection **list; |
11274 | bfd_size_type stub14_group_size; | |
11275 | bfd_boolean suppress_size_errors; | |
11276 | ||
11277 | suppress_size_errors = FALSE; | |
11278 | stub14_group_size = stub_group_size; | |
11279 | if (stub_group_size == 1) | |
11280 | { | |
11281 | /* Default values. */ | |
11282 | if (stubs_always_before_branch) | |
11283 | { | |
11284 | stub_group_size = 0x1e00000; | |
11285 | stub14_group_size = 0x7800; | |
11286 | } | |
11287 | else | |
11288 | { | |
11289 | stub_group_size = 0x1c00000; | |
11290 | stub14_group_size = 0x7000; | |
11291 | } | |
11292 | suppress_size_errors = TRUE; | |
11293 | } | |
11294 | ||
11295 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11296 | do |
721956f4 | 11297 | { |
734b6cf9 AM |
11298 | asection *tail = *list; |
11299 | while (tail != NULL) | |
721956f4 | 11300 | { |
734b6cf9 AM |
11301 | asection *curr; |
11302 | asection *prev; | |
11303 | bfd_size_type total; | |
11304 | bfd_boolean big_sec; | |
11305 | bfd_vma curr_toc; | |
11306 | ||
11307 | curr = tail; | |
eea6121a | 11308 | total = tail->size; |
6bee8834 AM |
11309 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11310 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11311 | ? stub14_group_size : stub_group_size); |
11312 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11313 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11314 | tail->owner, tail); | |
734b6cf9 AM |
11315 | curr_toc = htab->stub_group[tail->id].toc_off; |
11316 | ||
11317 | while ((prev = PREV_SEC (curr)) != NULL | |
11318 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11319 | < (ppc64_elf_section_data (prev) != NULL |
11320 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11321 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11322 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11323 | curr = prev; |
11324 | ||
11325 | /* OK, the size from the start of CURR to the end is less | |
11326 | than stub_group_size and thus can be handled by one stub | |
11327 | section. (or the tail section is itself larger than | |
11328 | stub_group_size, in which case we may be toast.) We | |
11329 | should really be keeping track of the total size of stubs | |
11330 | added here, as stubs contribute to the final output | |
11331 | section size. That's a little tricky, and this way will | |
11332 | only break if stubs added make the total size more than | |
11333 | 2^25, ie. for the default stub_group_size, if stubs total | |
11334 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11335 | do | |
721956f4 AM |
11336 | { |
11337 | prev = PREV_SEC (tail); | |
734b6cf9 | 11338 | /* Set up this stub group. */ |
721956f4 AM |
11339 | htab->stub_group[tail->id].link_sec = curr; |
11340 | } | |
734b6cf9 AM |
11341 | while (tail != curr && (tail = prev) != NULL); |
11342 | ||
11343 | /* But wait, there's more! Input sections up to stub_group_size | |
11344 | bytes before the stub section can be handled by it too. | |
11345 | Don't do this if we have a really large section after the | |
11346 | stubs, as adding more stubs increases the chance that | |
11347 | branches may not reach into the stub section. */ | |
11348 | if (!stubs_always_before_branch && !big_sec) | |
11349 | { | |
11350 | total = 0; | |
11351 | while (prev != NULL | |
11352 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11353 | < (ppc64_elf_section_data (prev) != NULL |
11354 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11355 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11356 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11357 | { | |
11358 | tail = prev; | |
11359 | prev = PREV_SEC (tail); | |
11360 | htab->stub_group[tail->id].link_sec = curr; | |
11361 | } | |
11362 | } | |
11363 | tail = prev; | |
721956f4 AM |
11364 | } |
11365 | } | |
734b6cf9 AM |
11366 | while (list-- != htab->input_list); |
11367 | free (htab->input_list); | |
721956f4 AM |
11368 | #undef PREV_SEC |
11369 | } | |
11370 | ||
58d180e8 AM |
11371 | static const unsigned char glink_eh_frame_cie[] = |
11372 | { | |
11373 | 0, 0, 0, 16, /* length. */ | |
11374 | 0, 0, 0, 0, /* id. */ | |
11375 | 1, /* CIE version. */ | |
11376 | 'z', 'R', 0, /* Augmentation string. */ | |
11377 | 4, /* Code alignment. */ | |
11378 | 0x78, /* Data alignment. */ | |
11379 | 65, /* RA reg. */ | |
11380 | 1, /* Augmentation size. */ | |
11381 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11382 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11383 | }; | |
11384 | ||
d969d15f AM |
11385 | /* Stripping output sections is normally done before dynamic section |
11386 | symbols have been allocated. This function is called later, and | |
11387 | handles cases like htab->brlt which is mapped to its own output | |
11388 | section. */ | |
11389 | ||
11390 | static void | |
11391 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11392 | { | |
11393 | if (isec->size == 0 | |
11394 | && isec->output_section->size == 0 | |
53d8967a | 11395 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11396 | && !bfd_section_removed_from_list (info->output_bfd, |
11397 | isec->output_section) | |
11398 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11399 | { | |
11400 | isec->output_section->flags |= SEC_EXCLUDE; | |
11401 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11402 | info->output_bfd->section_count--; | |
11403 | } | |
11404 | } | |
11405 | ||
721956f4 AM |
11406 | /* Determine and set the size of the stub section for a final link. |
11407 | ||
11408 | The basic idea here is to examine all the relocations looking for | |
11409 | PC-relative calls to a target that is unreachable with a "bl" | |
11410 | instruction. */ | |
11411 | ||
b34976b6 | 11412 | bfd_boolean |
9df0ef5f | 11413 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
794e51c0 AM |
11414 | bfd_boolean plt_static_chain, int plt_thread_safe, |
11415 | int plt_stub_align) | |
721956f4 AM |
11416 | { |
11417 | bfd_size_type stub_group_size; | |
b34976b6 | 11418 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11419 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11420 | ||
4dfe6ac6 NC |
11421 | if (htab == NULL) |
11422 | return FALSE; | |
11423 | ||
9df0ef5f | 11424 | htab->plt_static_chain = plt_static_chain; |
794e51c0 | 11425 | htab->plt_stub_align = plt_stub_align; |
e2458743 AM |
11426 | if (plt_thread_safe == -1 && !info->executable) |
11427 | plt_thread_safe = 1; | |
794e51c0 AM |
11428 | if (plt_thread_safe == -1) |
11429 | { | |
e2458743 | 11430 | static const char *const thread_starter[] = |
794e51c0 AM |
11431 | { |
11432 | "pthread_create", | |
11433 | /* libstdc++ */ | |
11434 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11435 | /* librt */ | |
11436 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11437 | "mq_notify", "create_timer", | |
11438 | /* libanl */ | |
11439 | "getaddrinfo_a", | |
11440 | /* libgomp */ | |
11441 | "GOMP_parallel_start", | |
11442 | "GOMP_parallel_loop_static_start", | |
11443 | "GOMP_parallel_loop_dynamic_start", | |
11444 | "GOMP_parallel_loop_guided_start", | |
11445 | "GOMP_parallel_loop_runtime_start", | |
68ffbac6 | 11446 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11447 | }; |
11448 | unsigned i; | |
11449 | ||
11450 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11451 | { | |
11452 | struct elf_link_hash_entry *h; | |
11453 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11454 | FALSE, FALSE, TRUE); | |
11455 | plt_thread_safe = h != NULL && h->ref_regular; | |
11456 | if (plt_thread_safe) | |
11457 | break; | |
11458 | } | |
11459 | } | |
11460 | htab->plt_thread_safe = plt_thread_safe; | |
721956f4 AM |
11461 | stubs_always_before_branch = group_size < 0; |
11462 | if (group_size < 0) | |
11463 | stub_group_size = -group_size; | |
11464 | else | |
11465 | stub_group_size = group_size; | |
721956f4 AM |
11466 | |
11467 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11468 | ||
721956f4 AM |
11469 | while (1) |
11470 | { | |
11471 | bfd *input_bfd; | |
11472 | unsigned int bfd_indx; | |
11473 | asection *stub_sec; | |
721956f4 AM |
11474 | |
11475 | htab->stub_iteration += 1; | |
721956f4 AM |
11476 | |
11477 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11478 | input_bfd != NULL; | |
11479 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11480 | { | |
11481 | Elf_Internal_Shdr *symtab_hdr; | |
11482 | asection *section; | |
6cdc0ccc | 11483 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11484 | |
0c8d6e5c | 11485 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11486 | continue; |
11487 | ||
721956f4 | 11488 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11489 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11490 | if (symtab_hdr->sh_info == 0) |
11491 | continue; | |
11492 | ||
721956f4 AM |
11493 | /* Walk over each section attached to the input bfd. */ |
11494 | for (section = input_bfd->sections; | |
11495 | section != NULL; | |
11496 | section = section->next) | |
11497 | { | |
721956f4 | 11498 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11499 | |
11500 | /* If there aren't any relocs, then there's nothing more | |
11501 | to do. */ | |
11502 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11503 | || (section->flags & SEC_ALLOC) == 0 |
11504 | || (section->flags & SEC_LOAD) == 0 | |
11505 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11506 | || section->reloc_count == 0) |
11507 | continue; | |
11508 | ||
11509 | /* If this section is a link-once section that will be | |
11510 | discarded, then don't create any stubs. */ | |
11511 | if (section->output_section == NULL | |
927be08e | 11512 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11513 | continue; |
11514 | ||
1e2f5b6e AM |
11515 | /* Get the relocs. */ |
11516 | internal_relocs | |
4ce794b7 | 11517 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11518 | info->keep_memory); |
721956f4 | 11519 | if (internal_relocs == NULL) |
1e2f5b6e | 11520 | goto error_ret_free_local; |
721956f4 AM |
11521 | |
11522 | /* Now examine each relocation. */ | |
11523 | irela = internal_relocs; | |
11524 | irelaend = irela + section->reloc_count; | |
11525 | for (; irela < irelaend; irela++) | |
11526 | { | |
4ce794b7 AM |
11527 | enum elf_ppc64_reloc_type r_type; |
11528 | unsigned int r_indx; | |
721956f4 AM |
11529 | enum ppc_stub_type stub_type; |
11530 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11531 | asection *sym_sec, *code_sec; |
e054468f | 11532 | bfd_vma sym_value, code_value; |
721956f4 | 11533 | bfd_vma destination; |
8843416a | 11534 | bfd_boolean ok_dest; |
721956f4 | 11535 | struct ppc_link_hash_entry *hash; |
8387904d | 11536 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11537 | struct elf_link_hash_entry *h; |
11538 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11539 | char *stub_name; |
11540 | const asection *id_sec; | |
74f0fb50 | 11541 | struct _opd_sec_data *opd; |
e054468f | 11542 | struct plt_entry *plt_ent; |
721956f4 AM |
11543 | |
11544 | r_type = ELF64_R_TYPE (irela->r_info); | |
11545 | r_indx = ELF64_R_SYM (irela->r_info); | |
11546 | ||
4ce794b7 | 11547 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11548 | { |
11549 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11550 | goto error_ret_free_internal; |
721956f4 AM |
11551 | } |
11552 | ||
11553 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
11554 | if (r_type != R_PPC64_REL24 |
11555 | && r_type != R_PPC64_REL14 | |
11556 | && r_type != R_PPC64_REL14_BRTAKEN | |
11557 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11558 | continue; |
11559 | ||
11560 | /* Now determine the call target, its name, value, | |
11561 | section. */ | |
411e1bfb AM |
11562 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11563 | r_indx, input_bfd)) | |
11564 | goto error_ret_free_internal; | |
11565 | hash = (struct ppc_link_hash_entry *) h; | |
11566 | ||
8843416a | 11567 | ok_dest = FALSE; |
8387904d | 11568 | fdh = NULL; |
7fe2b9a6 | 11569 | sym_value = 0; |
411e1bfb | 11570 | if (hash == NULL) |
721956f4 | 11571 | { |
411e1bfb | 11572 | sym_value = sym->st_value; |
8843416a | 11573 | ok_dest = TRUE; |
721956f4 | 11574 | } |
7fe2b9a6 AM |
11575 | else if (hash->elf.root.type == bfd_link_hash_defined |
11576 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11577 | { | |
11578 | sym_value = hash->elf.root.u.def.value; | |
11579 | if (sym_sec->output_section != NULL) | |
11580 | ok_dest = TRUE; | |
11581 | } | |
11582 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
11583 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 11584 | { |
99877b66 | 11585 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
11586 | use the func descriptor sym instead if it is |
11587 | defined. */ | |
ceb1f1ef | 11588 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 11589 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 11590 | { |
8387904d AM |
11591 | if (fdh->elf.root.type == bfd_link_hash_defined |
11592 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
11593 | { | |
11594 | sym_sec = fdh->elf.root.u.def.section; | |
11595 | sym_value = fdh->elf.root.u.def.value; | |
11596 | if (sym_sec->output_section != NULL) | |
11597 | ok_dest = TRUE; | |
11598 | } | |
99877b66 AM |
11599 | else |
11600 | fdh = NULL; | |
8387904d | 11601 | } |
7fe2b9a6 AM |
11602 | } |
11603 | else | |
11604 | { | |
11605 | bfd_set_error (bfd_error_bad_value); | |
11606 | goto error_ret_free_internal; | |
721956f4 AM |
11607 | } |
11608 | ||
8843416a AM |
11609 | destination = 0; |
11610 | if (ok_dest) | |
11611 | { | |
11612 | sym_value += irela->r_addend; | |
11613 | destination = (sym_value | |
11614 | + sym_sec->output_offset | |
11615 | + sym_sec->output_section->vma); | |
11616 | } | |
11617 | ||
8387904d | 11618 | code_sec = sym_sec; |
e054468f | 11619 | code_value = sym_value; |
74f0fb50 AM |
11620 | opd = get_opd_info (sym_sec); |
11621 | if (opd != NULL) | |
8387904d AM |
11622 | { |
11623 | bfd_vma dest; | |
11624 | ||
74f0fb50 | 11625 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 11626 | { |
74f0fb50 | 11627 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
11628 | if (adjust == -1) |
11629 | continue; | |
e054468f | 11630 | code_value += adjust; |
8387904d AM |
11631 | sym_value += adjust; |
11632 | } | |
11633 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 11634 | &code_sec, &code_value, FALSE); |
8387904d AM |
11635 | if (dest != (bfd_vma) -1) |
11636 | { | |
11637 | destination = dest; | |
11638 | if (fdh != NULL) | |
11639 | { | |
11640 | /* Fixup old ABI sym to point at code | |
11641 | entry. */ | |
99877b66 | 11642 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 11643 | hash->elf.root.u.def.section = code_sec; |
e054468f | 11644 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
11645 | } |
11646 | } | |
11647 | } | |
11648 | ||
721956f4 | 11649 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 11650 | plt_ent = NULL; |
721956f4 | 11651 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 11652 | &plt_ent, destination); |
ad8e1ba5 AM |
11653 | |
11654 | if (stub_type != ppc_stub_plt_call) | |
11655 | { | |
11656 | /* Check whether we need a TOC adjusting stub. | |
11657 | Since the linker pastes together pieces from | |
11658 | different object files when creating the | |
11659 | _init and _fini functions, it may be that a | |
11660 | call to what looks like a local sym is in | |
11661 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
11662 | if (code_sec != NULL |
11663 | && code_sec->output_section != NULL | |
11664 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 11665 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
11666 | && (code_sec->has_toc_reloc |
11667 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
11668 | stub_type = ppc_stub_long_branch_r2off; |
11669 | } | |
11670 | ||
721956f4 AM |
11671 | if (stub_type == ppc_stub_none) |
11672 | continue; | |
11673 | ||
411e1bfb AM |
11674 | /* __tls_get_addr calls might be eliminated. */ |
11675 | if (stub_type != ppc_stub_plt_call | |
11676 | && hash != NULL | |
8387904d AM |
11677 | && (hash == htab->tls_get_addr |
11678 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
11679 | && section->has_tls_reloc |
11680 | && irela != internal_relocs) | |
11681 | { | |
11682 | /* Get tls info. */ | |
f961d9dd | 11683 | unsigned char *tls_mask; |
411e1bfb | 11684 | |
3a71aa26 | 11685 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
11686 | irela - 1, input_bfd)) |
11687 | goto error_ret_free_internal; | |
e7b938ca | 11688 | if (*tls_mask != 0) |
411e1bfb AM |
11689 | continue; |
11690 | } | |
11691 | ||
3b421ab3 AM |
11692 | if (stub_type == ppc_stub_plt_call |
11693 | && irela + 1 < irelaend | |
11694 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
11695 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
11696 | { | |
11697 | if (!tocsave_find (htab, INSERT, | |
11698 | &local_syms, irela + 1, input_bfd)) | |
11699 | goto error_ret_free_internal; | |
11700 | } | |
11701 | else if (stub_type == ppc_stub_plt_call) | |
11702 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 11703 | |
721956f4 AM |
11704 | /* Support for grouping stub sections. */ |
11705 | id_sec = htab->stub_group[section->id].link_sec; | |
11706 | ||
11707 | /* Get the name of this stub. */ | |
11708 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
11709 | if (!stub_name) | |
11710 | goto error_ret_free_internal; | |
11711 | ||
11712 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 11713 | stub_name, FALSE, FALSE); |
721956f4 AM |
11714 | if (stub_entry != NULL) |
11715 | { | |
11716 | /* The proper stub has already been created. */ | |
11717 | free (stub_name); | |
794e51c0 AM |
11718 | if (stub_type == ppc_stub_plt_call_r2save) |
11719 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
11720 | continue; |
11721 | } | |
11722 | ||
25f53a85 | 11723 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
11724 | if (stub_entry == NULL) |
11725 | { | |
11726 | free (stub_name); | |
6cdc0ccc AM |
11727 | error_ret_free_internal: |
11728 | if (elf_section_data (section)->relocs == NULL) | |
11729 | free (internal_relocs); | |
11730 | error_ret_free_local: | |
11731 | if (local_syms != NULL | |
11732 | && (symtab_hdr->contents | |
11733 | != (unsigned char *) local_syms)) | |
11734 | free (local_syms); | |
b34976b6 | 11735 | return FALSE; |
721956f4 AM |
11736 | } |
11737 | ||
ad8e1ba5 | 11738 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
11739 | if (stub_type != ppc_stub_plt_call |
11740 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
11741 | { |
11742 | stub_entry->target_value = code_value; | |
11743 | stub_entry->target_section = code_sec; | |
11744 | } | |
11745 | else | |
11746 | { | |
11747 | stub_entry->target_value = sym_value; | |
11748 | stub_entry->target_section = sym_sec; | |
11749 | } | |
721956f4 | 11750 | stub_entry->h = hash; |
e054468f | 11751 | stub_entry->plt_ent = plt_ent; |
ee75fd95 AM |
11752 | |
11753 | if (stub_entry->h != NULL) | |
11754 | htab->stub_globals += 1; | |
721956f4 AM |
11755 | } |
11756 | ||
11757 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 11758 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 11759 | free (internal_relocs); |
721956f4 | 11760 | } |
6cdc0ccc AM |
11761 | |
11762 | if (local_syms != NULL | |
11763 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
11764 | { | |
11765 | if (!info->keep_memory) | |
11766 | free (local_syms); | |
11767 | else | |
11768 | symtab_hdr->contents = (unsigned char *) local_syms; | |
11769 | } | |
721956f4 AM |
11770 | } |
11771 | ||
5c3dead3 | 11772 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
11773 | stub sections. */ |
11774 | for (stub_sec = htab->stub_bfd->sections; | |
11775 | stub_sec != NULL; | |
11776 | stub_sec = stub_sec->next) | |
e717da7e | 11777 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 11778 | { |
5c3dead3 | 11779 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
11780 | stub_sec->size = 0; |
11781 | stub_sec->reloc_count = 0; | |
84f5d08e | 11782 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 11783 | } |
eea6121a AM |
11784 | |
11785 | htab->brlt->size = 0; | |
84f5d08e AM |
11786 | htab->brlt->reloc_count = 0; |
11787 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 11788 | if (htab->relbrlt != NULL) |
eea6121a | 11789 | htab->relbrlt->size = 0; |
721956f4 | 11790 | |
63bc6f6c | 11791 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 11792 | |
176a0d42 AM |
11793 | if (info->emitrelocations |
11794 | && htab->glink != NULL && htab->glink->size != 0) | |
11795 | { | |
11796 | htab->glink->reloc_count = 1; | |
11797 | htab->glink->flags |= SEC_RELOC; | |
11798 | } | |
11799 | ||
58d180e8 AM |
11800 | if (htab->glink_eh_frame != NULL |
11801 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 11802 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 11803 | { |
4bbe044a | 11804 | size_t size = 0, align; |
58d180e8 AM |
11805 | |
11806 | for (stub_sec = htab->stub_bfd->sections; | |
11807 | stub_sec != NULL; | |
11808 | stub_sec = stub_sec->next) | |
11809 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11810 | size += 20; | |
11811 | if (htab->glink != NULL && htab->glink->size != 0) | |
11812 | size += 24; | |
11813 | if (size != 0) | |
11814 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
11815 | align = 1; |
11816 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
11817 | align -= 1; | |
11818 | size = (size + align) & ~align; | |
58d180e8 AM |
11819 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
11820 | htab->glink_eh_frame->size = size; | |
11821 | } | |
11822 | ||
794e51c0 AM |
11823 | if (htab->plt_stub_align != 0) |
11824 | for (stub_sec = htab->stub_bfd->sections; | |
11825 | stub_sec != NULL; | |
11826 | stub_sec = stub_sec->next) | |
11827 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11828 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
11829 | & (-1 << htab->plt_stub_align)); | |
11830 | ||
5c3dead3 AM |
11831 | for (stub_sec = htab->stub_bfd->sections; |
11832 | stub_sec != NULL; | |
11833 | stub_sec = stub_sec->next) | |
11834 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
11835 | && stub_sec->rawsize != stub_sec->size) | |
11836 | break; | |
11837 | ||
11838 | /* Exit from this loop when no stubs have been added, and no stubs | |
11839 | have changed size. */ | |
58d180e8 AM |
11840 | if (stub_sec == NULL |
11841 | && (htab->glink_eh_frame == NULL | |
11842 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
11843 | break; |
11844 | ||
721956f4 AM |
11845 | /* Ask the linker to do its stuff. */ |
11846 | (*htab->layout_sections_again) (); | |
11847 | } | |
11848 | ||
d969d15f AM |
11849 | maybe_strip_output (info, htab->brlt); |
11850 | if (htab->glink_eh_frame != NULL) | |
11851 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 11852 | |
b34976b6 | 11853 | return TRUE; |
721956f4 AM |
11854 | } |
11855 | ||
11856 | /* Called after we have determined section placement. If sections | |
805fc799 | 11857 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 11858 | |
805fc799 | 11859 | bfd_vma |
1c865ab2 | 11860 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 11861 | { |
805fc799 AM |
11862 | asection *s; |
11863 | bfd_vma TOCstart; | |
721956f4 | 11864 | |
805fc799 AM |
11865 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
11866 | order. The TOC starts where the first of these sections starts. */ | |
11867 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 11868 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11869 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 11870 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11871 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 11872 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11873 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 11874 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
11875 | { |
11876 | /* This may happen for | |
11877 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
11878 | .toc directive | |
11879 | o bad linker script | |
11880 | o --gc-sections and empty TOC sections | |
11881 | ||
11882 | FIXME: Warn user? */ | |
11883 | ||
11884 | /* Look for a likely section. We probably won't even be | |
11885 | using TOCstart. */ | |
11886 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
11887 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
11888 | | SEC_EXCLUDE)) | |
805fc799 AM |
11889 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11890 | break; | |
721956f4 | 11891 | if (s == NULL) |
805fc799 | 11892 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11893 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
11894 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11895 | break; | |
721956f4 | 11896 | if (s == NULL) |
805fc799 | 11897 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
11898 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
11899 | == SEC_ALLOC) | |
805fc799 | 11900 | break; |
721956f4 | 11901 | if (s == NULL) |
805fc799 | 11902 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11903 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
11904 | break; |
11905 | } | |
721956f4 | 11906 | |
805fc799 AM |
11907 | TOCstart = 0; |
11908 | if (s != NULL) | |
11909 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 11910 | |
1c865ab2 AM |
11911 | _bfd_set_gp_value (obfd, TOCstart); |
11912 | ||
11913 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
11914 | { | |
11915 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11916 | ||
11917 | if (htab != NULL | |
11918 | && htab->elf.hgot != NULL) | |
11919 | { | |
11920 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
11921 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
11922 | htab->elf.hgot->root.u.def.section = s; | |
11923 | } | |
11924 | } | |
805fc799 | 11925 | return TOCstart; |
721956f4 AM |
11926 | } |
11927 | ||
11928 | /* Build all the stubs associated with the current output file. | |
11929 | The stubs are kept in a hash table attached to the main linker | |
11930 | hash table. This function is called via gldelf64ppc_finish. */ | |
11931 | ||
b34976b6 | 11932 | bfd_boolean |
4ce794b7 AM |
11933 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
11934 | struct bfd_link_info *info, | |
11935 | char **stats) | |
5d1634d7 AM |
11936 | { |
11937 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 11938 | asection *stub_sec; |
5d1634d7 | 11939 | bfd_byte *p; |
e717da7e | 11940 | int stub_sec_count = 0; |
5d1634d7 | 11941 | |
4dfe6ac6 NC |
11942 | if (htab == NULL) |
11943 | return FALSE; | |
11944 | ||
ad8e1ba5 | 11945 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
11946 | |
11947 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
11948 | for (stub_sec = htab->stub_bfd->sections; |
11949 | stub_sec != NULL; | |
11950 | stub_sec = stub_sec->next) | |
eea6121a AM |
11951 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
11952 | && stub_sec->size != 0) | |
e717da7e | 11953 | { |
eea6121a AM |
11954 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
11955 | if (stub_sec->contents == NULL) | |
11956 | return FALSE; | |
11957 | /* We want to check that built size is the same as calculated | |
11958 | size. rawsize is a convenient location to use. */ | |
11959 | stub_sec->rawsize = stub_sec->size; | |
11960 | stub_sec->size = 0; | |
e717da7e | 11961 | } |
5d1634d7 | 11962 | |
23eb7e01 | 11963 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 11964 | { |
9f951329 | 11965 | unsigned int indx; |
ad8e1ba5 | 11966 | bfd_vma plt0; |
9f951329 | 11967 | |
721956f4 | 11968 | /* Build the .glink plt call stub. */ |
97b639ba AM |
11969 | if (htab->emit_stub_syms) |
11970 | { | |
11971 | struct elf_link_hash_entry *h; | |
468392fb AM |
11972 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
11973 | TRUE, FALSE, FALSE); | |
97b639ba AM |
11974 | if (h == NULL) |
11975 | return FALSE; | |
11976 | if (h->root.type == bfd_link_hash_new) | |
11977 | { | |
11978 | h->root.type = bfd_link_hash_defined; | |
11979 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 11980 | h->root.u.def.value = 8; |
f5385ebf AM |
11981 | h->ref_regular = 1; |
11982 | h->def_regular = 1; | |
11983 | h->ref_regular_nonweak = 1; | |
11984 | h->forced_local = 1; | |
11985 | h->non_elf = 0; | |
97b639ba AM |
11986 | } |
11987 | } | |
176a0d42 AM |
11988 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
11989 | if (info->emitrelocations) | |
11990 | { | |
11991 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
11992 | if (r == NULL) | |
11993 | return FALSE; | |
11994 | r->r_offset = (htab->glink->output_offset | |
11995 | + htab->glink->output_section->vma); | |
11996 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
11997 | r->r_addend = plt0; | |
11998 | } | |
4ce794b7 | 11999 | p = htab->glink->contents; |
176a0d42 | 12000 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12001 | bfd_put_64 (htab->glink->owner, plt0, p); |
12002 | p += 8; | |
12003 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 12004 | p += 4; |
ee4bf8d2 | 12005 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 12006 | p += 4; |
ee4bf8d2 | 12007 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 12008 | p += 4; |
ee4bf8d2 | 12009 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 12010 | p += 4; |
ee4bf8d2 | 12011 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 12012 | p += 4; |
ee4bf8d2 | 12013 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 12014 | p += 4; |
ee4bf8d2 | 12015 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 12016 | p += 4; |
4ce794b7 | 12017 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 12018 | p += 4; |
4ce794b7 | 12019 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 12020 | p += 4; |
4ce794b7 | 12021 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 12022 | p += 4; |
4ce794b7 | 12023 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12024 | p += 4; |
ee4bf8d2 AM |
12025 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12026 | { | |
12027 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12028 | p += 4; | |
12029 | } | |
ad8e1ba5 | 12030 | |
9f951329 AM |
12031 | /* Build the .glink lazy link call stubs. */ |
12032 | indx = 0; | |
eea6121a | 12033 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
12034 | { |
12035 | if (indx < 0x8000) | |
12036 | { | |
4ce794b7 | 12037 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
12038 | p += 4; |
12039 | } | |
12040 | else | |
12041 | { | |
4ce794b7 | 12042 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 12043 | p += 4; |
4ce794b7 | 12044 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
12045 | p += 4; |
12046 | } | |
4ce794b7 | 12047 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12048 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12049 | indx++; |
9f951329 AM |
12050 | p += 4; |
12051 | } | |
eea6121a | 12052 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 12053 | } |
5d1634d7 | 12054 | |
eea6121a | 12055 | if (htab->brlt->size != 0) |
721956f4 | 12056 | { |
4ce794b7 | 12057 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12058 | htab->brlt->size); |
4ce794b7 | 12059 | if (htab->brlt->contents == NULL) |
b34976b6 | 12060 | return FALSE; |
721956f4 | 12061 | } |
ee75fd95 | 12062 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12063 | { |
12064 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12065 | htab->relbrlt->size); |
63bc6f6c AM |
12066 | if (htab->relbrlt->contents == NULL) |
12067 | return FALSE; | |
12068 | } | |
5d1634d7 | 12069 | |
58d180e8 AM |
12070 | if (htab->glink_eh_frame != NULL |
12071 | && htab->glink_eh_frame->size != 0) | |
12072 | { | |
12073 | bfd_vma val; | |
4bbe044a AM |
12074 | bfd_byte *last_fde; |
12075 | size_t last_fde_len, size, align, pad; | |
58d180e8 AM |
12076 | |
12077 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12078 | if (p == NULL) | |
12079 | return FALSE; | |
12080 | htab->glink_eh_frame->contents = p; | |
4bbe044a | 12081 | last_fde = p; |
58d180e8 AM |
12082 | |
12083 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
12084 | ||
12085 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12086 | /* CIE length (rewrite in case little-endian). */ | |
4bbe044a AM |
12087 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
12088 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
58d180e8 AM |
12089 | p += sizeof (glink_eh_frame_cie); |
12090 | ||
12091 | for (stub_sec = htab->stub_bfd->sections; | |
12092 | stub_sec != NULL; | |
12093 | stub_sec = stub_sec->next) | |
12094 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12095 | { | |
4bbe044a AM |
12096 | last_fde = p; |
12097 | last_fde_len = 16; | |
58d180e8 AM |
12098 | /* FDE length. */ |
12099 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
12100 | p += 4; | |
12101 | /* CIE pointer. */ | |
12102 | val = p - htab->glink_eh_frame->contents; | |
12103 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12104 | p += 4; | |
12105 | /* Offset to stub section. */ | |
12106 | val = (stub_sec->output_section->vma | |
12107 | + stub_sec->output_offset); | |
12108 | val -= (htab->glink_eh_frame->output_section->vma | |
12109 | + htab->glink_eh_frame->output_offset); | |
12110 | val -= p - htab->glink_eh_frame->contents; | |
12111 | if (val + 0x80000000 > 0xffffffff) | |
12112 | { | |
12113 | info->callbacks->einfo | |
8de848d8 | 12114 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12115 | stub_sec->name); |
12116 | return FALSE; | |
12117 | } | |
12118 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12119 | p += 4; | |
12120 | /* stub section size. */ | |
12121 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
12122 | p += 4; | |
12123 | /* Augmentation. */ | |
12124 | p += 1; | |
12125 | /* Pad. */ | |
12126 | p += 3; | |
12127 | } | |
12128 | if (htab->glink != NULL && htab->glink->size != 0) | |
12129 | { | |
4bbe044a AM |
12130 | last_fde = p; |
12131 | last_fde_len = 20; | |
58d180e8 AM |
12132 | /* FDE length. */ |
12133 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12134 | p += 4; | |
12135 | /* CIE pointer. */ | |
12136 | val = p - htab->glink_eh_frame->contents; | |
12137 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12138 | p += 4; | |
12139 | /* Offset to .glink. */ | |
12140 | val = (htab->glink->output_section->vma | |
12141 | + htab->glink->output_offset | |
12142 | + 8); | |
12143 | val -= (htab->glink_eh_frame->output_section->vma | |
12144 | + htab->glink_eh_frame->output_offset); | |
12145 | val -= p - htab->glink_eh_frame->contents; | |
12146 | if (val + 0x80000000 > 0xffffffff) | |
12147 | { | |
12148 | info->callbacks->einfo | |
8de848d8 | 12149 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12150 | htab->glink->name); |
12151 | return FALSE; | |
12152 | } | |
12153 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12154 | p += 4; | |
12155 | /* .glink size. */ | |
12156 | bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p); | |
12157 | p += 4; | |
12158 | /* Augmentation. */ | |
12159 | p += 1; | |
12160 | ||
12161 | *p++ = DW_CFA_advance_loc + 1; | |
12162 | *p++ = DW_CFA_register; | |
12163 | *p++ = 65; | |
12164 | *p++ = 12; | |
12165 | *p++ = DW_CFA_advance_loc + 4; | |
12166 | *p++ = DW_CFA_restore_extended; | |
12167 | *p++ = 65; | |
12168 | } | |
4bbe044a AM |
12169 | /* Subsume any padding into the last FDE if user .eh_frame |
12170 | sections are aligned more than glink_eh_frame. Otherwise any | |
12171 | zero padding will be seen as a terminator. */ | |
12172 | size = p - htab->glink_eh_frame->contents; | |
12173 | align = 1; | |
12174 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12175 | align -= 1; | |
12176 | pad = ((size + align) & ~align) - size; | |
12177 | htab->glink_eh_frame->size = size + pad; | |
12178 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
58d180e8 AM |
12179 | } |
12180 | ||
721956f4 AM |
12181 | /* Build the stubs as directed by the stub hash table. */ |
12182 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12183 | |
aa8a7074 AM |
12184 | if (htab->relbrlt != NULL) |
12185 | htab->relbrlt->reloc_count = 0; | |
12186 | ||
794e51c0 AM |
12187 | if (htab->plt_stub_align != 0) |
12188 | for (stub_sec = htab->stub_bfd->sections; | |
12189 | stub_sec != NULL; | |
12190 | stub_sec = stub_sec->next) | |
12191 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12192 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
12193 | & (-1 << htab->plt_stub_align)); | |
12194 | ||
721956f4 AM |
12195 | for (stub_sec = htab->stub_bfd->sections; |
12196 | stub_sec != NULL; | |
12197 | stub_sec = stub_sec->next) | |
e717da7e AM |
12198 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12199 | { | |
12200 | stub_sec_count += 1; | |
eea6121a | 12201 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12202 | break; |
12203 | } | |
5d1634d7 | 12204 | |
721956f4 | 12205 | if (stub_sec != NULL |
58d180e8 AM |
12206 | || htab->glink->rawsize != htab->glink->size |
12207 | || (htab->glink_eh_frame != NULL | |
12208 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12209 | { |
b34976b6 | 12210 | htab->stub_error = TRUE; |
8de848d8 | 12211 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12212 | } |
721956f4 | 12213 | |
d2a300cf AM |
12214 | if (htab->stub_error) |
12215 | return FALSE; | |
12216 | ||
12217 | if (stats != NULL) | |
12218 | { | |
12219 | *stats = bfd_malloc (500); | |
12220 | if (*stats == NULL) | |
12221 | return FALSE; | |
12222 | ||
ee75fd95 | 12223 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12224 | " branch %lu\n" |
12225 | " toc adjust %lu\n" | |
12226 | " long branch %lu\n" | |
12227 | " long toc adj %lu\n" | |
794e51c0 AM |
12228 | " plt call %lu\n" |
12229 | " plt call toc %lu"), | |
e717da7e | 12230 | stub_sec_count, |
ee75fd95 | 12231 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12232 | htab->stub_count[ppc_stub_long_branch - 1], |
12233 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12234 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12235 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 AM |
12236 | htab->stub_count[ppc_stub_plt_call - 1], |
12237 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
d2a300cf AM |
12238 | } |
12239 | return TRUE; | |
5bd4f169 AM |
12240 | } |
12241 | ||
99877b66 AM |
12242 | /* This function undoes the changes made by add_symbol_adjust. */ |
12243 | ||
12244 | static bfd_boolean | |
12245 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12246 | { | |
12247 | struct ppc_link_hash_entry *eh; | |
12248 | ||
12249 | if (h->root.type == bfd_link_hash_indirect) | |
12250 | return TRUE; | |
12251 | ||
99877b66 AM |
12252 | eh = (struct ppc_link_hash_entry *) h; |
12253 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12254 | return TRUE; | |
12255 | ||
12256 | eh->elf.root.type = bfd_link_hash_undefined; | |
12257 | return TRUE; | |
12258 | } | |
12259 | ||
12260 | void | |
12261 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12262 | { | |
12263 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12264 | |
12265 | if (htab != NULL) | |
12266 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12267 | } |
12268 | ||
60124e18 AM |
12269 | /* What to do when ld finds relocations against symbols defined in |
12270 | discarded sections. */ | |
12271 | ||
12272 | static unsigned int | |
12273 | ppc64_elf_action_discarded (asection *sec) | |
12274 | { | |
12275 | if (strcmp (".opd", sec->name) == 0) | |
12276 | return 0; | |
12277 | ||
12278 | if (strcmp (".toc", sec->name) == 0) | |
12279 | return 0; | |
12280 | ||
bce50a28 JJ |
12281 | if (strcmp (".toc1", sec->name) == 0) |
12282 | return 0; | |
12283 | ||
60124e18 AM |
12284 | return _bfd_elf_default_action_discarded (sec); |
12285 | } | |
12286 | ||
5bd4f169 AM |
12287 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12288 | to handle the relocations for a section. | |
12289 | ||
12290 | The relocs are always passed as Rela structures; if the section | |
12291 | actually uses Rel structures, the r_addend field will always be | |
12292 | zero. | |
12293 | ||
12294 | This function is responsible for adjust the section contents as | |
12295 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12296 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12297 | necessary. |
12298 | ||
12299 | This function does not have to worry about setting the reloc | |
12300 | address or the reloc symbol index. | |
12301 | ||
12302 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12303 | ||
12304 | LOCAL_SECTIONS is an array giving the section in the input file | |
12305 | corresponding to the st_shndx field of each local symbol. | |
12306 | ||
12307 | The global hash table entry for the global symbols can be found | |
12308 | via elf_sym_hashes (input_bfd). | |
12309 | ||
1049f94e | 12310 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12311 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12312 | going to be the section symbol corresponding to the output | |
12313 | section, which means that the addend must be adjusted | |
12314 | accordingly. */ | |
12315 | ||
b34976b6 | 12316 | static bfd_boolean |
4ce794b7 AM |
12317 | ppc64_elf_relocate_section (bfd *output_bfd, |
12318 | struct bfd_link_info *info, | |
12319 | bfd *input_bfd, | |
12320 | asection *input_section, | |
12321 | bfd_byte *contents, | |
12322 | Elf_Internal_Rela *relocs, | |
12323 | Elf_Internal_Sym *local_syms, | |
12324 | asection **local_sections) | |
5bd4f169 | 12325 | { |
65f38f15 | 12326 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12327 | Elf_Internal_Shdr *symtab_hdr; |
12328 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12329 | Elf_Internal_Rela *rel; |
12330 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12331 | Elf_Internal_Rela outrel; |
12332 | bfd_byte *loc; | |
411e1bfb | 12333 | struct got_entry **local_got_ents; |
5bd4f169 | 12334 | bfd_vma TOCstart; |
b34976b6 AM |
12335 | bfd_boolean ret = TRUE; |
12336 | bfd_boolean is_opd; | |
794e51c0 AM |
12337 | /* Assume 'at' branch hints. */ |
12338 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12339 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12340 | |
65f38f15 | 12341 | /* Initialize howto table if needed. */ |
5bd4f169 | 12342 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12343 | ppc_howto_init (); |
12344 | ||
65f38f15 | 12345 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12346 | if (htab == NULL) |
12347 | return FALSE; | |
ee75fd95 AM |
12348 | |
12349 | /* Don't relocate stub sections. */ | |
12350 | if (input_section->owner == htab->stub_bfd) | |
12351 | return TRUE; | |
12352 | ||
0c8d6e5c | 12353 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 12354 | |
411e1bfb | 12355 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 12356 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 12357 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 12358 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 12359 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 12360 | |
5bd4f169 AM |
12361 | rel = relocs; |
12362 | relend = relocs + input_section->reloc_count; | |
12363 | for (; rel < relend; rel++) | |
12364 | { | |
04c9666a | 12365 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 12366 | bfd_vma addend; |
5bd4f169 AM |
12367 | bfd_reloc_status_type r; |
12368 | Elf_Internal_Sym *sym; | |
12369 | asection *sec; | |
039b3fef AM |
12370 | struct elf_link_hash_entry *h_elf; |
12371 | struct ppc_link_hash_entry *h; | |
12372 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 12373 | const char *sym_name; |
0d4792f7 | 12374 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 12375 | bfd_vma toc_addend; |
f961d9dd AM |
12376 | unsigned char tls_mask, tls_gd, tls_type; |
12377 | unsigned char sym_type; | |
5bd4f169 | 12378 | bfd_vma relocation; |
b34976b6 AM |
12379 | bfd_boolean unresolved_reloc; |
12380 | bfd_boolean warned; | |
bc30df16 | 12381 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 12382 | unsigned int insn; |
e11840f9 | 12383 | unsigned int mask; |
721956f4 AM |
12384 | struct ppc_stub_hash_entry *stub_entry; |
12385 | bfd_vma max_br_offset; | |
12386 | bfd_vma from; | |
31c76678 | 12387 | const Elf_Internal_Rela orig_rel = *rel; |
5bd4f169 | 12388 | |
4ce794b7 | 12389 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 12390 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
12391 | |
12392 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
12393 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
12394 | proper TOC base to use. */ | |
12395 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
12396 | && rel != relocs | |
12397 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
12398 | && is_opd) | |
12399 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
12400 | ||
4ce794b7 AM |
12401 | sym = NULL; |
12402 | sec = NULL; | |
039b3fef | 12403 | h_elf = NULL; |
4ce794b7 | 12404 | sym_name = NULL; |
b34976b6 AM |
12405 | unresolved_reloc = FALSE; |
12406 | warned = FALSE; | |
65f38f15 | 12407 | |
0b13192e | 12408 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
12409 | { |
12410 | /* It's a local symbol. */ | |
74f0fb50 | 12411 | struct _opd_sec_data *opd; |
4025353c | 12412 | |
5bd4f169 AM |
12413 | sym = local_syms + r_symndx; |
12414 | sec = local_sections[r_symndx]; | |
26c61ae5 | 12415 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 12416 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 12417 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
12418 | opd = get_opd_info (sec); |
12419 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 12420 | { |
74f0fb50 | 12421 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
12422 | if (adjust == -1) |
12423 | relocation = 0; | |
12424 | else | |
4cc603a5 AM |
12425 | { |
12426 | /* If this is a relocation against the opd section sym | |
12427 | and we have edited .opd, adjust the reloc addend so | |
12428 | that ld -r and ld --emit-relocs output is correct. | |
12429 | If it is a reloc against some other .opd symbol, | |
12430 | then the symbol value will be adjusted later. */ | |
12431 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12432 | rel->r_addend += adjust; | |
12433 | else | |
12434 | relocation += adjust; | |
12435 | } | |
1e2f5b6e | 12436 | } |
5bd4f169 AM |
12437 | } |
12438 | else | |
12439 | { | |
b2a8e766 AM |
12440 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
12441 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 12442 | h_elf, sec, relocation, |
b2a8e766 | 12443 | unresolved_reloc, warned); |
039b3fef AM |
12444 | sym_name = h_elf->root.root.string; |
12445 | sym_type = h_elf->type; | |
b69fdb4e AM |
12446 | if (sec != NULL |
12447 | && sec->owner == output_bfd | |
12448 | && strcmp (sec->name, ".opd") == 0) | |
12449 | { | |
12450 | /* This is a symbol defined in a linker script. All | |
12451 | such are defined in output sections, even those | |
12452 | defined by simple assignment from a symbol defined in | |
12453 | an input section. Transfer the symbol to an | |
12454 | appropriate input .opd section, so that a branch to | |
12455 | this symbol will be mapped to the location specified | |
12456 | by the opd entry. */ | |
12457 | struct bfd_link_order *lo; | |
12458 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
12459 | if (lo->type == bfd_indirect_link_order) | |
12460 | { | |
12461 | asection *isec = lo->u.indirect.section; | |
12462 | if (h_elf->root.u.def.value >= isec->output_offset | |
12463 | && h_elf->root.u.def.value < (isec->output_offset | |
12464 | + isec->size)) | |
12465 | { | |
12466 | h_elf->root.u.def.value -= isec->output_offset; | |
12467 | h_elf->root.u.def.section = isec; | |
12468 | sec = isec; | |
12469 | break; | |
12470 | } | |
12471 | } | |
12472 | } | |
5bd4f169 | 12473 | } |
039b3fef | 12474 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 12475 | |
dbaa2011 | 12476 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 12477 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
12478 | rel, 1, relend, |
12479 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 12480 | contents); |
ab96bf03 AM |
12481 | |
12482 | if (info->relocatable) | |
12483 | continue; | |
12484 | ||
f40da81b AM |
12485 | if (h != NULL && &h->elf == htab->elf.hgot) |
12486 | { | |
12487 | relocation = (TOCstart | |
12488 | + htab->stub_group[input_section->id].toc_off); | |
12489 | sec = bfd_abs_section_ptr; | |
12490 | unresolved_reloc = FALSE; | |
12491 | } | |
12492 | ||
951fd09b AM |
12493 | /* TLS optimizations. Replace instruction sequences and relocs |
12494 | based on information we collected in tls_optimize. We edit | |
12495 | RELOCS so that --emit-relocs will output something sensible | |
12496 | for the final instruction stream. */ | |
12497 | tls_mask = 0; | |
12498 | tls_gd = 0; | |
0d4792f7 | 12499 | toc_symndx = 0; |
727fc41e AM |
12500 | if (h != NULL) |
12501 | tls_mask = h->tls_mask; | |
12502 | else if (local_got_ents != NULL) | |
411e1bfb | 12503 | { |
e054468f AM |
12504 | struct plt_entry **local_plt = (struct plt_entry **) |
12505 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 12506 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 12507 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
12508 | tls_mask = lgot_masks[r_symndx]; |
12509 | } | |
12510 | if (tls_mask == 0 | |
12511 | && (r_type == R_PPC64_TLS | |
12512 | || r_type == R_PPC64_TLSGD | |
12513 | || r_type == R_PPC64_TLSLD)) | |
12514 | { | |
12515 | /* Check for toc tls entries. */ | |
f961d9dd | 12516 | unsigned char *toc_tls; |
0d4792f7 | 12517 | |
727fc41e AM |
12518 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12519 | &local_syms, rel, input_bfd)) | |
12520 | return FALSE; | |
0d4792f7 | 12521 | |
727fc41e AM |
12522 | if (toc_tls) |
12523 | tls_mask = *toc_tls; | |
0d4792f7 AM |
12524 | } |
12525 | ||
12526 | /* Check that tls relocs are used with tls syms, and non-tls | |
12527 | relocs are used with non-tls syms. */ | |
cf35638d | 12528 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
12529 | && r_type != R_PPC64_NONE |
12530 | && (h == NULL | |
039b3fef AM |
12531 | || h->elf.root.type == bfd_link_hash_defined |
12532 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
12533 | && (IS_PPC64_TLS_RELOC (r_type) |
12534 | != (sym_type == STT_TLS | |
12535 | || (sym_type == STT_SECTION | |
12536 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 12537 | { |
727fc41e AM |
12538 | if (tls_mask != 0 |
12539 | && (r_type == R_PPC64_TLS | |
12540 | || r_type == R_PPC64_TLSGD | |
12541 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
12542 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
12543 | ; | |
12544 | else | |
25f53a85 | 12545 | info->callbacks->einfo |
1d483afe | 12546 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
12547 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
12548 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 12549 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
12550 | ppc64_elf_howto_table[r_type]->name, |
12551 | sym_name); | |
411e1bfb AM |
12552 | } |
12553 | ||
12554 | /* Ensure reloc mapping code below stays sane. */ | |
12555 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
12556 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
12557 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
12558 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
12559 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
12560 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
12561 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
12562 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
12563 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
12564 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
12565 | abort (); | |
0d4792f7 | 12566 | |
411e1bfb AM |
12567 | switch (r_type) |
12568 | { | |
12569 | default: | |
411e1bfb AM |
12570 | break; |
12571 | ||
ba761f19 AM |
12572 | case R_PPC64_LO_DS_OPT: |
12573 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
12574 | if ((insn & (0x3f << 26)) != 58u << 26) | |
12575 | abort (); | |
12576 | insn += (14u << 26) - (58u << 26); | |
12577 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
12578 | r_type = R_PPC64_TOC16_LO; | |
12579 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12580 | break; | |
12581 | ||
411e1bfb AM |
12582 | case R_PPC64_TOC16: |
12583 | case R_PPC64_TOC16_LO: | |
12584 | case R_PPC64_TOC16_DS: | |
12585 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
12586 | { |
12587 | /* Check for toc tls entries. */ | |
f961d9dd | 12588 | unsigned char *toc_tls; |
951fd09b | 12589 | int retval; |
411e1bfb | 12590 | |
3a71aa26 AM |
12591 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12592 | &local_syms, rel, input_bfd); | |
951fd09b | 12593 | if (retval == 0) |
411e1bfb AM |
12594 | return FALSE; |
12595 | ||
12596 | if (toc_tls) | |
12597 | { | |
951fd09b | 12598 | tls_mask = *toc_tls; |
411e1bfb AM |
12599 | if (r_type == R_PPC64_TOC16_DS |
12600 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
12601 | { |
12602 | if (tls_mask != 0 | |
12603 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
12604 | goto toctprel; | |
12605 | } | |
411e1bfb | 12606 | else |
951fd09b AM |
12607 | { |
12608 | /* If we found a GD reloc pair, then we might be | |
12609 | doing a GD->IE transition. */ | |
12610 | if (retval == 2) | |
12611 | { | |
12612 | tls_gd = TLS_TPRELGD; | |
12613 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12614 | goto tls_ldgd_opt; |
951fd09b AM |
12615 | } |
12616 | else if (retval == 3) | |
12617 | { | |
12618 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 12619 | goto tls_ldgd_opt; |
951fd09b AM |
12620 | } |
12621 | } | |
411e1bfb AM |
12622 | } |
12623 | } | |
12624 | break; | |
12625 | ||
9d6ded02 AM |
12626 | case R_PPC64_GOT_TPREL16_HI: |
12627 | case R_PPC64_GOT_TPREL16_HA: | |
12628 | if (tls_mask != 0 | |
12629 | && (tls_mask & TLS_TPREL) == 0) | |
12630 | { | |
12631 | rel->r_offset -= d_offset; | |
12632 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
12633 | r_type = R_PPC64_NONE; | |
12634 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12635 | } | |
12636 | break; | |
12637 | ||
411e1bfb AM |
12638 | case R_PPC64_GOT_TPREL16_DS: |
12639 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
12640 | if (tls_mask != 0 |
12641 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12642 | { |
81407a69 | 12643 | toctprel: |
4fe5ca5b | 12644 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
12645 | insn &= 31 << 21; |
12646 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 12647 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 12648 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
12649 | if (toc_symndx != 0) |
12650 | { | |
12651 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12652 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12653 | /* We changed the symbol. Start over in order to |
12654 | get h, sym, sec etc. right. */ | |
12655 | rel--; | |
12656 | continue; | |
12657 | } | |
12658 | else | |
12659 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12660 | } |
12661 | break; | |
12662 | ||
12663 | case R_PPC64_TLS: | |
951fd09b AM |
12664 | if (tls_mask != 0 |
12665 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12666 | { |
411e1bfb | 12667 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
12668 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
12669 | if (insn == 0) | |
411e1bfb | 12670 | abort (); |
411e1bfb | 12671 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 12672 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
12673 | PPC64_TPREL16_LO which is at low-order half-word. */ |
12674 | rel->r_offset += d_offset; | |
0d4792f7 AM |
12675 | r_type = R_PPC64_TPREL16_LO; |
12676 | if (toc_symndx != 0) | |
12677 | { | |
12678 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12679 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12680 | /* We changed the symbol. Start over in order to |
12681 | get h, sym, sec etc. right. */ | |
12682 | rel--; | |
12683 | continue; | |
12684 | } | |
12685 | else | |
12686 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12687 | } |
12688 | break; | |
12689 | ||
411e1bfb AM |
12690 | case R_PPC64_GOT_TLSGD16_HI: |
12691 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
12692 | tls_gd = TLS_TPRELGD; |
12693 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12694 | goto tls_gdld_hi; | |
12695 | break; | |
12696 | ||
411e1bfb AM |
12697 | case R_PPC64_GOT_TLSLD16_HI: |
12698 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12699 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 12700 | { |
951fd09b AM |
12701 | tls_gdld_hi: |
12702 | if ((tls_mask & tls_gd) != 0) | |
12703 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12704 | + R_PPC64_GOT_TPREL16_DS); | |
12705 | else | |
411e1bfb | 12706 | { |
4fe5ca5b | 12707 | rel->r_offset -= d_offset; |
727ac201 | 12708 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 12709 | r_type = R_PPC64_NONE; |
411e1bfb | 12710 | } |
951fd09b | 12711 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
12712 | } |
12713 | break; | |
12714 | ||
951fd09b AM |
12715 | case R_PPC64_GOT_TLSGD16: |
12716 | case R_PPC64_GOT_TLSGD16_LO: | |
12717 | tls_gd = TLS_TPRELGD; | |
12718 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12719 | goto tls_ldgd_opt; |
951fd09b | 12720 | break; |
411e1bfb | 12721 | |
951fd09b AM |
12722 | case R_PPC64_GOT_TLSLD16: |
12723 | case R_PPC64_GOT_TLSLD16_LO: | |
12724 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12725 | { | |
3a71aa26 | 12726 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
12727 | bfd_vma offset; |
12728 | ||
12729 | tls_ldgd_opt: | |
727fc41e AM |
12730 | offset = (bfd_vma) -1; |
12731 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
12732 | __tls_get_addr calls, we must trust that the call | |
12733 | stays with its arg setup insns, ie. that the next | |
12734 | reloc is the __tls_get_addr call associated with | |
12735 | the current reloc. Edit both insns. */ | |
12736 | if (input_section->has_tls_get_addr_call | |
12737 | && rel + 1 < relend | |
12738 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
12739 | htab->tls_get_addr, | |
12740 | htab->tls_get_addr_fd)) | |
12741 | offset = rel[1].r_offset; | |
102890f0 | 12742 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 12743 | { |
102890f0 | 12744 | /* IE */ |
3a71aa26 AM |
12745 | insn1 = bfd_get_32 (output_bfd, |
12746 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
12747 | insn1 &= (1 << 26) - (1 << 2); |
12748 | insn1 |= 58 << 26; /* ld */ | |
12749 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 12750 | if (offset != (bfd_vma) -1) |
f58d5a2d | 12751 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
12752 | if ((tls_mask & TLS_EXPLICIT) == 0) |
12753 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12754 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 12755 | else |
102890f0 AM |
12756 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
12757 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12758 | } | |
12759 | else | |
12760 | { | |
12761 | /* LE */ | |
12762 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
12763 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12764 | if (tls_gd == 0) | |
951fd09b | 12765 | { |
102890f0 | 12766 | /* Was an LD reloc. */ |
1d483afe AM |
12767 | if (toc_symndx) |
12768 | sec = local_sections[toc_symndx]; | |
12769 | for (r_symndx = 0; | |
12770 | r_symndx < symtab_hdr->sh_info; | |
12771 | r_symndx++) | |
12772 | if (local_sections[r_symndx] == sec) | |
12773 | break; | |
12774 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12775 | r_symndx = STN_UNDEF; |
102890f0 | 12776 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12777 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
12778 | rel->r_addend -= (local_syms[r_symndx].st_value |
12779 | + sec->output_offset | |
12780 | + sec->output_section->vma); | |
951fd09b | 12781 | } |
102890f0 | 12782 | else if (toc_symndx != 0) |
3a71aa26 AM |
12783 | { |
12784 | r_symndx = toc_symndx; | |
12785 | rel->r_addend = toc_addend; | |
12786 | } | |
102890f0 AM |
12787 | r_type = R_PPC64_TPREL16_HA; |
12788 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
12789 | if (offset != (bfd_vma) -1) |
12790 | { | |
12791 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
12792 | R_PPC64_TPREL16_LO); | |
12793 | rel[1].r_offset = offset + d_offset; | |
12794 | rel[1].r_addend = rel->r_addend; | |
12795 | } | |
102890f0 | 12796 | } |
3a71aa26 AM |
12797 | bfd_put_32 (output_bfd, insn1, |
12798 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
12799 | if (offset != (bfd_vma) -1) |
12800 | { | |
12801 | insn3 = bfd_get_32 (output_bfd, | |
12802 | contents + offset + 4); | |
12803 | if (insn3 == NOP | |
12804 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12805 | { | |
12806 | rel[1].r_offset += 4; | |
12807 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12808 | insn2 = NOP; | |
12809 | } | |
12810 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12811 | } | |
12812 | if ((tls_mask & tls_gd) == 0 | |
12813 | && (tls_gd == 0 || toc_symndx != 0)) | |
12814 | { | |
12815 | /* We changed the symbol. Start over in order | |
12816 | to get h, sym, sec etc. right. */ | |
12817 | rel--; | |
12818 | continue; | |
12819 | } | |
12820 | } | |
12821 | break; | |
12822 | ||
12823 | case R_PPC64_TLSGD: | |
12824 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12825 | { | |
12826 | unsigned int insn2, insn3; | |
12827 | bfd_vma offset = rel->r_offset; | |
12828 | ||
12829 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12830 | { | |
12831 | /* IE */ | |
12832 | r_type = R_PPC64_NONE; | |
12833 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
12834 | } | |
12835 | else | |
12836 | { | |
12837 | /* LE */ | |
12838 | if (toc_symndx != 0) | |
12839 | { | |
12840 | r_symndx = toc_symndx; | |
12841 | rel->r_addend = toc_addend; | |
12842 | } | |
12843 | r_type = R_PPC64_TPREL16_LO; | |
12844 | rel->r_offset = offset + d_offset; | |
12845 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12846 | } | |
12847 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12848 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12849 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12850 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
12851 | insn3 = bfd_get_32 (output_bfd, |
12852 | contents + offset + 4); | |
102890f0 AM |
12853 | if (insn3 == NOP |
12854 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12855 | { | |
727fc41e | 12856 | rel->r_offset += 4; |
3a71aa26 AM |
12857 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
12858 | insn2 = NOP; | |
102890f0 | 12859 | } |
102890f0 | 12860 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 12861 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 12862 | { |
102890f0 AM |
12863 | rel--; |
12864 | continue; | |
411e1bfb | 12865 | } |
411e1bfb | 12866 | } |
411e1bfb AM |
12867 | break; |
12868 | ||
727fc41e AM |
12869 | case R_PPC64_TLSLD: |
12870 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12871 | { | |
12872 | unsigned int insn2, insn3; | |
12873 | bfd_vma offset = rel->r_offset; | |
12874 | ||
12875 | if (toc_symndx) | |
12876 | sec = local_sections[toc_symndx]; | |
12877 | for (r_symndx = 0; | |
12878 | r_symndx < symtab_hdr->sh_info; | |
12879 | r_symndx++) | |
12880 | if (local_sections[r_symndx] == sec) | |
12881 | break; | |
12882 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12883 | r_symndx = STN_UNDEF; |
727fc41e | 12884 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12885 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
12886 | rel->r_addend -= (local_syms[r_symndx].st_value |
12887 | + sec->output_offset | |
12888 | + sec->output_section->vma); | |
12889 | ||
12890 | r_type = R_PPC64_TPREL16_LO; | |
12891 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12892 | rel->r_offset = offset + d_offset; | |
12893 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12894 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12895 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
12896 | insn2 = 0x38630000; /* addi 3,3,0 */ |
12897 | insn3 = bfd_get_32 (output_bfd, | |
12898 | contents + offset + 4); | |
12899 | if (insn3 == NOP | |
12900 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12901 | { | |
12902 | rel->r_offset += 4; | |
12903 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12904 | insn2 = NOP; | |
12905 | } | |
12906 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12907 | rel--; | |
12908 | continue; | |
12909 | } | |
12910 | break; | |
12911 | ||
411e1bfb | 12912 | case R_PPC64_DTPMOD64: |
951fd09b AM |
12913 | if (rel + 1 < relend |
12914 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
12915 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 12916 | { |
951fd09b AM |
12917 | if ((tls_mask & TLS_GD) == 0) |
12918 | { | |
12919 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
12920 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12921 | r_type = R_PPC64_TPREL64; | |
12922 | else | |
12923 | { | |
4ce794b7 | 12924 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
12925 | r_type = R_PPC64_NONE; |
12926 | } | |
12927 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12928 | } | |
12929 | } | |
12930 | else | |
12931 | { | |
12932 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 12933 | { |
4ce794b7 | 12934 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 12935 | r_type = R_PPC64_NONE; |
951fd09b | 12936 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 12937 | } |
411e1bfb AM |
12938 | } |
12939 | break; | |
12940 | ||
12941 | case R_PPC64_TPREL64: | |
951fd09b | 12942 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
12943 | { |
12944 | r_type = R_PPC64_NONE; | |
12945 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12946 | } | |
12947 | break; | |
12948 | } | |
12949 | ||
12950 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 12951 | insn = 0; |
b25116a9 AM |
12952 | max_br_offset = 1 << 25; |
12953 | addend = rel->r_addend; | |
bc30df16 | 12954 | reloc_dest = DEST_NORMAL; |
65f38f15 | 12955 | switch (r_type) |
5bd4f169 AM |
12956 | { |
12957 | default: | |
65f38f15 | 12958 | break; |
5bd4f169 | 12959 | |
3b421ab3 AM |
12960 | case R_PPC64_TOCSAVE: |
12961 | if (relocation + addend == (rel->r_offset | |
12962 | + input_section->output_offset | |
12963 | + input_section->output_section->vma) | |
12964 | && tocsave_find (htab, NO_INSERT, | |
12965 | &local_syms, rel, input_bfd)) | |
12966 | { | |
12967 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
12968 | if (insn == NOP | |
12969 | || insn == CROR_151515 || insn == CROR_313131) | |
12970 | bfd_put_32 (input_bfd, STD_R2_40R1, | |
12971 | contents + rel->r_offset); | |
12972 | } | |
12973 | break; | |
12974 | ||
65f38f15 AM |
12975 | /* Branch taken prediction relocations. */ |
12976 | case R_PPC64_ADDR14_BRTAKEN: | |
12977 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
12978 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
12979 | /* Fall thru. */ | |
65f38f15 | 12980 | |
86c76c7b | 12981 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
12982 | case R_PPC64_ADDR14_BRNTAKEN: |
12983 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
12984 | insn |= bfd_get_32 (output_bfd, |
12985 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 12986 | /* Fall thru. */ |
86c76c7b | 12987 | |
b25116a9 AM |
12988 | case R_PPC64_REL14: |
12989 | max_br_offset = 1 << 15; | |
12990 | /* Fall thru. */ | |
5bd4f169 | 12991 | |
65f38f15 | 12992 | case R_PPC64_REL24: |
ad8e1ba5 AM |
12993 | /* Calls to functions with a different TOC, such as calls to |
12994 | shared objects, need to alter the TOC pointer. This is | |
12995 | done using a linkage stub. A REL24 branching to these | |
12996 | linkage stubs needs to be followed by a nop, as the nop | |
12997 | will be replaced with an instruction to restore the TOC | |
12998 | base pointer. */ | |
8387904d | 12999 | fdh = h; |
b31867b6 AM |
13000 | if (h != NULL |
13001 | && h->oh != NULL | |
13002 | && h->oh->is_func_descriptor) | |
13003 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13004 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13005 | htab); | |
6abec6bc | 13006 | if (stub_entry != NULL |
ad8e1ba5 | 13007 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13008 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13009 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13010 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13011 | { |
b25116a9 | 13012 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13013 | |
ba8ca3e7 AM |
13014 | /* All of these stubs will modify r2, so there must be a |
13015 | branch and link followed by a nop. The nop is | |
13016 | replaced by an insn to restore r2. */ | |
eea6121a | 13017 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13018 | { |
ba8ca3e7 AM |
13019 | unsigned long br; |
13020 | ||
13021 | br = bfd_get_32 (input_bfd, | |
13022 | contents + rel->r_offset); | |
13023 | if ((br & 1) != 0) | |
41bd81ab | 13024 | { |
ba8ca3e7 AM |
13025 | unsigned long nop; |
13026 | ||
13027 | nop = bfd_get_32 (input_bfd, | |
13028 | contents + rel->r_offset + 4); | |
13029 | if (nop == NOP | |
13030 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13031 | { |
ba8ca3e7 AM |
13032 | if (h != NULL |
13033 | && (h == htab->tls_get_addr_fd | |
13034 | || h == htab->tls_get_addr) | |
13035 | && !htab->no_tls_get_addr_opt) | |
13036 | { | |
13037 | /* Special stub used, leave nop alone. */ | |
13038 | } | |
13039 | else | |
13040 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
13041 | contents + rel->r_offset + 4); | |
13042 | can_plt_call = TRUE; | |
a7f2871e | 13043 | } |
41bd81ab | 13044 | } |
5bd4f169 | 13045 | } |
721956f4 | 13046 | |
ba8ca3e7 | 13047 | if (!can_plt_call && h != NULL) |
721956f4 | 13048 | { |
ba8ca3e7 AM |
13049 | const char *name = h->elf.root.root.string; |
13050 | ||
13051 | if (*name == '.') | |
13052 | ++name; | |
13053 | ||
13054 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13055 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13056 | { |
ba8ca3e7 AM |
13057 | /* Allow crt1 branch to go via a toc adjusting |
13058 | stub. Other calls that never return could do | |
13059 | the same, if we could detect such. */ | |
b25116a9 | 13060 | can_plt_call = TRUE; |
6ab189d5 | 13061 | } |
ba8ca3e7 AM |
13062 | } |
13063 | ||
13064 | if (!can_plt_call) | |
13065 | { | |
13066 | /* g++ as of 20130507 emits self-calls without a | |
13067 | following nop. This is arguably wrong since we | |
13068 | have conflicting information. On the one hand a | |
13069 | global symbol and on the other a local call | |
13070 | sequence, but don't error for this special case. | |
13071 | It isn't possible to cheaply verify we have | |
13072 | exactly such a call. Allow all calls to the same | |
13073 | section. */ | |
13074 | asection *code_sec = sec; | |
13075 | ||
13076 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13077 | { |
ba8ca3e7 AM |
13078 | bfd_vma off = (relocation + addend |
13079 | - sec->output_section->vma | |
13080 | - sec->output_offset); | |
bc30df16 | 13081 | |
ba8ca3e7 | 13082 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13083 | } |
ba8ca3e7 AM |
13084 | if (code_sec == input_section) |
13085 | can_plt_call = TRUE; | |
13086 | } | |
13087 | ||
13088 | if (!can_plt_call) | |
13089 | { | |
13090 | info->callbacks->einfo | |
13091 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13092 | "recompile with -fPIC"), | |
13093 | input_bfd, input_section, rel->r_offset, sym_name); | |
13094 | ||
13095 | bfd_set_error (bfd_error_bad_value); | |
13096 | ret = FALSE; | |
721956f4 AM |
13097 | } |
13098 | ||
b25116a9 | 13099 | if (can_plt_call |
794e51c0 AM |
13100 | && (stub_entry->stub_type == ppc_stub_plt_call |
13101 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13102 | unresolved_reloc = FALSE; |
13103 | } | |
13104 | ||
6abec6bc AM |
13105 | if ((stub_entry == NULL |
13106 | || stub_entry->stub_type == ppc_stub_long_branch | |
13107 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13108 | && get_opd_info (sec) != NULL) |
13109 | { | |
13110 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13111 | bfd_vma off = (relocation + addend |
13112 | - sec->output_section->vma | |
13113 | - sec->output_offset); | |
aef36ac1 | 13114 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13115 | if (dest != (bfd_vma) -1) |
13116 | { | |
13117 | relocation = dest; | |
13118 | addend = 0; | |
bc30df16 | 13119 | reloc_dest = DEST_OPD; |
8387904d AM |
13120 | } |
13121 | } | |
13122 | ||
b25116a9 AM |
13123 | /* If the branch is out of reach we ought to have a long |
13124 | branch stub. */ | |
13125 | from = (rel->r_offset | |
13126 | + input_section->output_offset | |
13127 | + input_section->output_section->vma); | |
13128 | ||
6abec6bc AM |
13129 | if (stub_entry != NULL |
13130 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13131 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13132 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13133 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13134 | || (relocation + addend - from + max_br_offset | |
13135 | < 2 * max_br_offset))) | |
13136 | /* Don't use the stub if this branch is in range. */ | |
13137 | stub_entry = NULL; | |
b25116a9 AM |
13138 | |
13139 | if (stub_entry != NULL) | |
13140 | { | |
13141 | /* Munge up the value and addend so that we call the stub | |
13142 | rather than the procedure directly. */ | |
13143 | relocation = (stub_entry->stub_offset | |
13144 | + stub_entry->stub_sec->output_offset | |
13145 | + stub_entry->stub_sec->output_section->vma); | |
13146 | addend = 0; | |
bc30df16 | 13147 | reloc_dest = DEST_STUB; |
3b421ab3 | 13148 | |
794e51c0 AM |
13149 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13150 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13151 | && (ALWAYS_EMIT_R2SAVE | |
13152 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13153 | && rel + 1 < relend |
13154 | && rel[1].r_offset == rel->r_offset + 4 | |
13155 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13156 | relocation += 4; | |
b25116a9 AM |
13157 | } |
13158 | ||
13159 | if (insn != 0) | |
13160 | { | |
794e51c0 | 13161 | if (is_isa_v2) |
721956f4 | 13162 | { |
b25116a9 AM |
13163 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13164 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13165 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13166 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13167 | insn |= 0x02 << 21; | |
13168 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13169 | insn |= 0x08 << 21; | |
13170 | else | |
13171 | break; | |
13172 | } | |
13173 | else | |
13174 | { | |
13175 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13176 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13177 | insn ^= 0x01 << 21; |
721956f4 | 13178 | } |
b25116a9 AM |
13179 | |
13180 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13181 | } |
e86ce104 | 13182 | |
06da1e8e AM |
13183 | /* NOP out calls to undefined weak functions. |
13184 | We can thus call a weak function without first | |
13185 | checking whether the function is defined. */ | |
b25116a9 | 13186 | else if (h != NULL |
039b3fef | 13187 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13188 | && h->elf.dynindx == -1 |
b25116a9 AM |
13189 | && r_type == R_PPC64_REL24 |
13190 | && relocation == 0 | |
4cc603a5 | 13191 | && addend == 0) |
e86ce104 | 13192 | { |
06da1e8e AM |
13193 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13194 | continue; | |
e86ce104 | 13195 | } |
65f38f15 AM |
13196 | break; |
13197 | } | |
5bd4f169 | 13198 | |
65f38f15 | 13199 | /* Set `addend'. */ |
411e1bfb | 13200 | tls_type = 0; |
65f38f15 AM |
13201 | switch (r_type) |
13202 | { | |
13203 | default: | |
25f53a85 | 13204 | info->callbacks->einfo |
bc30df16 | 13205 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13206 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13207 | |
65f38f15 | 13208 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13209 | ret = FALSE; |
65f38f15 | 13210 | continue; |
5bd4f169 | 13211 | |
65f38f15 | 13212 | case R_PPC64_NONE: |
411e1bfb | 13213 | case R_PPC64_TLS: |
727fc41e AM |
13214 | case R_PPC64_TLSGD: |
13215 | case R_PPC64_TLSLD: | |
3b421ab3 | 13216 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13217 | case R_PPC64_GNU_VTINHERIT: |
13218 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13219 | continue; |
5bd4f169 AM |
13220 | |
13221 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13222 | address in the GOT as relocation value instead of the | |
411e1bfb | 13223 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13224 | symbol and put the symbol value there. */ |
411e1bfb AM |
13225 | case R_PPC64_GOT_TLSGD16: |
13226 | case R_PPC64_GOT_TLSGD16_LO: | |
13227 | case R_PPC64_GOT_TLSGD16_HI: | |
13228 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13229 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13230 | goto dogot; |
13231 | ||
13232 | case R_PPC64_GOT_TLSLD16: | |
13233 | case R_PPC64_GOT_TLSLD16_LO: | |
13234 | case R_PPC64_GOT_TLSLD16_HI: | |
13235 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13236 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13237 | goto dogot; |
13238 | ||
13239 | case R_PPC64_GOT_TPREL16_DS: | |
13240 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13241 | case R_PPC64_GOT_TPREL16_HI: | |
13242 | case R_PPC64_GOT_TPREL16_HA: | |
13243 | tls_type = TLS_TLS | TLS_TPREL; | |
13244 | goto dogot; | |
13245 | ||
13246 | case R_PPC64_GOT_DTPREL16_DS: | |
13247 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13248 | case R_PPC64_GOT_DTPREL16_HI: | |
13249 | case R_PPC64_GOT_DTPREL16_HA: | |
13250 | tls_type = TLS_TLS | TLS_DTPREL; | |
13251 | goto dogot; | |
13252 | ||
65f38f15 AM |
13253 | case R_PPC64_GOT16: |
13254 | case R_PPC64_GOT16_LO: | |
13255 | case R_PPC64_GOT16_HI: | |
13256 | case R_PPC64_GOT16_HA: | |
13257 | case R_PPC64_GOT16_DS: | |
13258 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13259 | dogot: |
5bd4f169 AM |
13260 | { |
13261 | /* Relocation is to the entry for this symbol in the global | |
13262 | offset table. */ | |
e717da7e | 13263 | asection *got; |
d881513a | 13264 | bfd_vma *offp; |
5bd4f169 | 13265 | bfd_vma off; |
d881513a | 13266 | unsigned long indx = 0; |
927be08e | 13267 | struct got_entry *ent; |
65f38f15 | 13268 | |
d881513a AM |
13269 | if (tls_type == (TLS_TLS | TLS_LD) |
13270 | && (h == NULL | |
f5385ebf | 13271 | || !h->elf.def_dynamic)) |
927be08e | 13272 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13273 | else |
5bd4f169 | 13274 | { |
5bd4f169 | 13275 | |
d881513a AM |
13276 | if (h != NULL) |
13277 | { | |
13278 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13279 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13280 | &h->elf) | |
d881513a | 13281 | || (info->shared |
726d3ab0 | 13282 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
d881513a AM |
13283 | /* This is actually a static link, or it is a |
13284 | -Bsymbolic link and the symbol is defined | |
13285 | locally, or the symbol was forced to be local | |
13286 | because of a version file. */ | |
13287 | ; | |
13288 | else | |
13289 | { | |
14acf4dc | 13290 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13291 | indx = h->elf.dynindx; |
d881513a AM |
13292 | unresolved_reloc = FALSE; |
13293 | } | |
039b3fef | 13294 | ent = h->elf.got.glist; |
d881513a | 13295 | } |
411e1bfb | 13296 | else |
5bd4f169 | 13297 | { |
d881513a AM |
13298 | if (local_got_ents == NULL) |
13299 | abort (); | |
13300 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 13301 | } |
d881513a AM |
13302 | |
13303 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 13304 | if (ent->addend == orig_rel.r_addend |
e717da7e | 13305 | && ent->owner == input_bfd |
d881513a AM |
13306 | && ent->tls_type == tls_type) |
13307 | break; | |
5bd4f169 | 13308 | } |
411e1bfb | 13309 | |
927be08e AM |
13310 | if (ent == NULL) |
13311 | abort (); | |
13312 | if (ent->is_indirect) | |
13313 | ent = ent->got.ent; | |
13314 | offp = &ent->got.offset; | |
13315 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
13316 | if (got == NULL) |
13317 | abort (); | |
13318 | ||
411e1bfb AM |
13319 | /* The offset must always be a multiple of 8. We use the |
13320 | least significant bit to record whether we have already | |
13321 | processed this entry. */ | |
d881513a | 13322 | off = *offp; |
411e1bfb AM |
13323 | if ((off & 1) != 0) |
13324 | off &= ~1; | |
5bd4f169 AM |
13325 | else |
13326 | { | |
411e1bfb AM |
13327 | /* Generate relocs for the dynamic linker, except in |
13328 | the case of TLSLD where we'll use one entry per | |
13329 | module. */ | |
25f23106 AM |
13330 | asection *relgot; |
13331 | bfd_boolean ifunc; | |
e717da7e | 13332 | |
d881513a | 13333 | *offp = off | 1; |
25f23106 AM |
13334 | relgot = NULL; |
13335 | ifunc = (h != NULL | |
13336 | ? h->elf.type == STT_GNU_IFUNC | |
13337 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 13338 | if (ifunc) |
25f23106 | 13339 | relgot = htab->reliplt; |
19e08130 AM |
13340 | else if ((info->shared || indx != 0) |
13341 | && (h == NULL | |
13342 | || (tls_type == (TLS_TLS | TLS_LD) | |
13343 | && !h->elf.def_dynamic) | |
13344 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
13345 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
13346 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 13347 | if (relgot != NULL) |
5bd4f169 | 13348 | { |
e717da7e AM |
13349 | outrel.r_offset = (got->output_section->vma |
13350 | + got->output_offset | |
411e1bfb | 13351 | + off); |
4cc603a5 | 13352 | outrel.r_addend = addend; |
d881513a | 13353 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 13354 | { |
411e1bfb | 13355 | outrel.r_addend = 0; |
e515b051 | 13356 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
13357 | if (tls_type == (TLS_TLS | TLS_GD)) |
13358 | { | |
e717da7e AM |
13359 | loc = relgot->contents; |
13360 | loc += (relgot->reloc_count++ | |
d881513a AM |
13361 | * sizeof (Elf64_External_Rela)); |
13362 | bfd_elf64_swap_reloca_out (output_bfd, | |
13363 | &outrel, loc); | |
e515b051 | 13364 | outrel.r_offset += 8; |
4cc603a5 | 13365 | outrel.r_addend = addend; |
d881513a AM |
13366 | outrel.r_info |
13367 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 13368 | } |
411e1bfb | 13369 | } |
951fd09b | 13370 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 13371 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 13372 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13373 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
13374 | else if (indx != 0) |
13375 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
13376 | else | |
81407a69 | 13377 | { |
25f23106 AM |
13378 | if (ifunc) |
13379 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13380 | else | |
13381 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
13382 | |
13383 | /* Write the .got section contents for the sake | |
13384 | of prelink. */ | |
e717da7e | 13385 | loc = got->contents + off; |
23fbd6fa JJ |
13386 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
13387 | loc); | |
81407a69 | 13388 | } |
81407a69 AM |
13389 | |
13390 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
13391 | { |
13392 | outrel.r_addend += relocation; | |
13393 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 13394 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 13395 | } |
e717da7e AM |
13396 | loc = relgot->contents; |
13397 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
13398 | * sizeof (Elf64_External_Rela)); |
13399 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
13400 | } | |
13401 | ||
ad8e1ba5 | 13402 | /* Init the .got section contents here if we're not |
81407a69 | 13403 | emitting a reloc. */ |
d881513a | 13404 | else |
411e1bfb | 13405 | { |
4cc603a5 | 13406 | relocation += addend; |
7b609f53 AM |
13407 | if (tls_type == (TLS_TLS | TLS_LD)) |
13408 | relocation = 1; | |
13409 | else if (tls_type != 0) | |
411e1bfb | 13410 | { |
e1918d23 | 13411 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 13412 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13413 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 13414 | |
7b609f53 AM |
13415 | if (tls_type == (TLS_TLS | TLS_GD)) |
13416 | { | |
13417 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 13418 | got->contents + off + 8); |
7b609f53 AM |
13419 | relocation = 1; |
13420 | } | |
411e1bfb | 13421 | } |
7b609f53 | 13422 | |
411e1bfb | 13423 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 13424 | got->contents + off); |
5bd4f169 AM |
13425 | } |
13426 | } | |
13427 | ||
65f38f15 AM |
13428 | if (off >= (bfd_vma) -2) |
13429 | abort (); | |
13430 | ||
bf102f86 AM |
13431 | relocation = got->output_section->vma + got->output_offset + off; |
13432 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 13433 | } |
65f38f15 AM |
13434 | break; |
13435 | ||
13436 | case R_PPC64_PLT16_HA: | |
13437 | case R_PPC64_PLT16_HI: | |
13438 | case R_PPC64_PLT16_LO: | |
13439 | case R_PPC64_PLT32: | |
13440 | case R_PPC64_PLT64: | |
13441 | /* Relocation is to the entry for this symbol in the | |
13442 | procedure linkage table. */ | |
13443 | ||
13444 | /* Resolve a PLT reloc against a local symbol directly, | |
13445 | without using the procedure linkage table. */ | |
13446 | if (h == NULL) | |
13447 | break; | |
13448 | ||
411e1bfb AM |
13449 | /* It's possible that we didn't make a PLT entry for this |
13450 | symbol. This happens when statically linking PIC code, | |
13451 | or when using -Bsymbolic. Go find a match if there is a | |
13452 | PLT entry. */ | |
4ce794b7 | 13453 | if (htab->plt != NULL) |
65f38f15 | 13454 | { |
411e1bfb | 13455 | struct plt_entry *ent; |
039b3fef | 13456 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
31c76678 | 13457 | if (ent->addend == orig_rel.r_addend |
411e1bfb AM |
13458 | && ent->plt.offset != (bfd_vma) -1) |
13459 | { | |
4ce794b7 AM |
13460 | relocation = (htab->plt->output_section->vma |
13461 | + htab->plt->output_offset | |
411e1bfb AM |
13462 | + ent->plt.offset); |
13463 | unresolved_reloc = FALSE; | |
13464 | } | |
65f38f15 | 13465 | } |
65f38f15 | 13466 | break; |
5bd4f169 | 13467 | |
0b13192e AM |
13468 | case R_PPC64_TOC: |
13469 | /* Relocation value is TOC base. */ | |
13470 | relocation = TOCstart; | |
cf35638d | 13471 | if (r_symndx == STN_UNDEF) |
0b13192e | 13472 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
13473 | else if (unresolved_reloc) |
13474 | ; | |
13475 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
13476 | relocation += htab->stub_group[sec->id].toc_off; |
13477 | else | |
13478 | unresolved_reloc = TRUE; | |
ab96bf03 | 13479 | goto dodyn; |
0b13192e | 13480 | |
5bd4f169 AM |
13481 | /* TOC16 relocs. We want the offset relative to the TOC base, |
13482 | which is the address of the start of the TOC plus 0x8000. | |
13483 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
13484 | in this order. */ | |
65f38f15 AM |
13485 | case R_PPC64_TOC16: |
13486 | case R_PPC64_TOC16_LO: | |
13487 | case R_PPC64_TOC16_HI: | |
13488 | case R_PPC64_TOC16_DS: | |
13489 | case R_PPC64_TOC16_LO_DS: | |
13490 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 13491 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
13492 | break; |
13493 | ||
13494 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
13495 | case R_PPC64_SECTOFF: |
13496 | case R_PPC64_SECTOFF_LO: | |
13497 | case R_PPC64_SECTOFF_HI: | |
13498 | case R_PPC64_SECTOFF_DS: | |
13499 | case R_PPC64_SECTOFF_LO_DS: | |
13500 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 13501 | if (sec != NULL) |
65f38f15 | 13502 | addend -= sec->output_section->vma; |
5bd4f169 AM |
13503 | break; |
13504 | ||
25f23106 AM |
13505 | case R_PPC64_REL16: |
13506 | case R_PPC64_REL16_LO: | |
13507 | case R_PPC64_REL16_HI: | |
13508 | case R_PPC64_REL16_HA: | |
13509 | break; | |
13510 | ||
721956f4 AM |
13511 | case R_PPC64_REL14: |
13512 | case R_PPC64_REL14_BRNTAKEN: | |
13513 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
13514 | case R_PPC64_REL24: |
13515 | break; | |
13516 | ||
411e1bfb AM |
13517 | case R_PPC64_TPREL16: |
13518 | case R_PPC64_TPREL16_LO: | |
13519 | case R_PPC64_TPREL16_HI: | |
13520 | case R_PPC64_TPREL16_HA: | |
13521 | case R_PPC64_TPREL16_DS: | |
13522 | case R_PPC64_TPREL16_LO_DS: | |
13523 | case R_PPC64_TPREL16_HIGHER: | |
13524 | case R_PPC64_TPREL16_HIGHERA: | |
13525 | case R_PPC64_TPREL16_HIGHEST: | |
13526 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
13527 | if (h != NULL |
13528 | && h->elf.root.type == bfd_link_hash_undefweak | |
13529 | && h->elf.dynindx == -1) | |
13530 | { | |
13531 | /* Make this relocation against an undefined weak symbol | |
13532 | resolve to zero. This is really just a tweak, since | |
13533 | code using weak externs ought to check that they are | |
13534 | defined before using them. */ | |
13535 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
13536 | ||
13537 | insn = bfd_get_32 (output_bfd, p); | |
13538 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
13539 | if (insn != 0) | |
13540 | bfd_put_32 (output_bfd, insn, p); | |
13541 | break; | |
13542 | } | |
e1918d23 | 13543 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13544 | if (info->shared) |
13545 | /* The TPREL16 relocs shouldn't really be used in shared | |
13546 | libs as they will result in DT_TEXTREL being set, but | |
13547 | support them anyway. */ | |
13548 | goto dodyn; | |
13549 | break; | |
13550 | ||
13551 | case R_PPC64_DTPREL16: | |
13552 | case R_PPC64_DTPREL16_LO: | |
13553 | case R_PPC64_DTPREL16_HI: | |
13554 | case R_PPC64_DTPREL16_HA: | |
13555 | case R_PPC64_DTPREL16_DS: | |
13556 | case R_PPC64_DTPREL16_LO_DS: | |
13557 | case R_PPC64_DTPREL16_HIGHER: | |
13558 | case R_PPC64_DTPREL16_HIGHERA: | |
13559 | case R_PPC64_DTPREL16_HIGHEST: | |
13560 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 13561 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13562 | break; |
13563 | ||
e515b051 AM |
13564 | case R_PPC64_DTPMOD64: |
13565 | relocation = 1; | |
13566 | addend = 0; | |
13567 | goto dodyn; | |
13568 | ||
411e1bfb | 13569 | case R_PPC64_TPREL64: |
e1918d23 | 13570 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13571 | goto dodyn; |
13572 | ||
13573 | case R_PPC64_DTPREL64: | |
e1918d23 | 13574 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13575 | /* Fall thru */ |
13576 | ||
65f38f15 AM |
13577 | /* Relocations that may need to be propagated if this is a |
13578 | dynamic object. */ | |
04c9666a | 13579 | case R_PPC64_REL30: |
65f38f15 AM |
13580 | case R_PPC64_REL32: |
13581 | case R_PPC64_REL64: | |
13582 | case R_PPC64_ADDR14: | |
13583 | case R_PPC64_ADDR14_BRNTAKEN: | |
13584 | case R_PPC64_ADDR14_BRTAKEN: | |
13585 | case R_PPC64_ADDR16: | |
13586 | case R_PPC64_ADDR16_DS: | |
13587 | case R_PPC64_ADDR16_HA: | |
13588 | case R_PPC64_ADDR16_HI: | |
13589 | case R_PPC64_ADDR16_HIGHER: | |
13590 | case R_PPC64_ADDR16_HIGHERA: | |
13591 | case R_PPC64_ADDR16_HIGHEST: | |
13592 | case R_PPC64_ADDR16_HIGHESTA: | |
13593 | case R_PPC64_ADDR16_LO: | |
13594 | case R_PPC64_ADDR16_LO_DS: | |
13595 | case R_PPC64_ADDR24: | |
65f38f15 AM |
13596 | case R_PPC64_ADDR32: |
13597 | case R_PPC64_ADDR64: | |
13598 | case R_PPC64_UADDR16: | |
13599 | case R_PPC64_UADDR32: | |
13600 | case R_PPC64_UADDR64: | |
411e1bfb | 13601 | dodyn: |
5d1634d7 | 13602 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
13603 | break; |
13604 | ||
41bd81ab AM |
13605 | if (NO_OPD_RELOCS && is_opd) |
13606 | break; | |
13607 | ||
65f38f15 | 13608 | if ((info->shared |
4e795f50 | 13609 | && (h == NULL |
039b3fef AM |
13610 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
13611 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 13612 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 13613 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
13614 | || (ELIMINATE_COPY_RELOCS |
13615 | && !info->shared | |
65f38f15 | 13616 | && h != NULL |
039b3fef | 13617 | && h->elf.dynindx != -1 |
f5385ebf | 13618 | && !h->elf.non_got_ref |
25f23106 AM |
13619 | && !h->elf.def_regular) |
13620 | || (!info->shared | |
13621 | && (h != NULL | |
13622 | ? h->elf.type == STT_GNU_IFUNC | |
13623 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 13624 | { |
b34976b6 | 13625 | bfd_boolean skip, relocate; |
65f38f15 | 13626 | asection *sreloc; |
1cf1f670 | 13627 | bfd_vma out_off; |
65f38f15 AM |
13628 | |
13629 | /* When generating a dynamic object, these relocations | |
13630 | are copied into the output file to be resolved at run | |
13631 | time. */ | |
13632 | ||
b34976b6 AM |
13633 | skip = FALSE; |
13634 | relocate = FALSE; | |
65f38f15 | 13635 | |
1cf1f670 AM |
13636 | out_off = _bfd_elf_section_offset (output_bfd, info, |
13637 | input_section, rel->r_offset); | |
13638 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 13639 | skip = TRUE; |
1cf1f670 | 13640 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 13641 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
13642 | out_off += (input_section->output_section->vma |
13643 | + input_section->output_offset); | |
13644 | outrel.r_offset = out_off; | |
411e1bfb | 13645 | outrel.r_addend = rel->r_addend; |
65f38f15 | 13646 | |
1cf1f670 AM |
13647 | /* Optimize unaligned reloc use. */ |
13648 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
13649 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
13650 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
13651 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
13652 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
13653 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
13654 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
13655 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
13656 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
13657 | ||
65f38f15 | 13658 | if (skip) |
0bb2d96a | 13659 | memset (&outrel, 0, sizeof outrel); |
726d3ab0 | 13660 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
0b13192e AM |
13661 | && !is_opd |
13662 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
13663 | { |
13664 | BFD_ASSERT (h->elf.dynindx != -1); | |
13665 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
13666 | } | |
65f38f15 AM |
13667 | else |
13668 | { | |
41bd81ab AM |
13669 | /* This symbol is local, or marked to become local, |
13670 | or this is an opd section reloc which must point | |
13671 | at a local function. */ | |
65f38f15 | 13672 | outrel.r_addend += relocation; |
e86ce104 | 13673 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 13674 | { |
3fad3c7c | 13675 | if (is_opd && h != NULL) |
afbe61cf AM |
13676 | { |
13677 | /* Lie about opd entries. This case occurs | |
13678 | when building shared libraries and we | |
13679 | reference a function in another shared | |
3fad3c7c AM |
13680 | lib. The same thing happens for a weak |
13681 | definition in an application that's | |
13682 | overridden by a strong definition in a | |
13683 | shared lib. (I believe this is a generic | |
13684 | bug in binutils handling of weak syms.) | |
13685 | In these cases we won't use the opd | |
1e2f5b6e | 13686 | entry in this lib. */ |
b34976b6 | 13687 | unresolved_reloc = FALSE; |
afbe61cf | 13688 | } |
25f23106 AM |
13689 | if (!is_opd |
13690 | && r_type == R_PPC64_ADDR64 | |
13691 | && (h != NULL | |
13692 | ? h->elf.type == STT_GNU_IFUNC | |
13693 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
13694 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13695 | else | |
13696 | { | |
13697 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 13698 | |
25f23106 AM |
13699 | /* We need to relocate .opd contents for ld.so. |
13700 | Prelink also wants simple and consistent rules | |
13701 | for relocs. This make all RELATIVE relocs have | |
13702 | *r_offset equal to r_addend. */ | |
13703 | relocate = TRUE; | |
13704 | } | |
65f38f15 AM |
13705 | } |
13706 | else | |
13707 | { | |
13708 | long indx = 0; | |
13709 | ||
25f23106 AM |
13710 | if (h != NULL |
13711 | ? h->elf.type == STT_GNU_IFUNC | |
13712 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13713 | { | |
25f53a85 | 13714 | info->callbacks->einfo |
bc30df16 AM |
13715 | (_("%P: %H: %s for indirect " |
13716 | "function `%T' unsupported\n"), | |
25f53a85 | 13717 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
13718 | ppc64_elf_howto_table[r_type]->name, |
13719 | sym_name); | |
13720 | ret = FALSE; | |
13721 | } | |
cf35638d | 13722 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
13723 | ; |
13724 | else if (sec == NULL || sec->owner == NULL) | |
13725 | { | |
13726 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 13727 | return FALSE; |
65f38f15 AM |
13728 | } |
13729 | else | |
13730 | { | |
13731 | asection *osec; | |
13732 | ||
13733 | osec = sec->output_section; | |
13734 | indx = elf_section_data (osec)->dynindx; | |
13735 | ||
74541ad4 AM |
13736 | if (indx == 0) |
13737 | { | |
13738 | if ((osec->flags & SEC_READONLY) == 0 | |
13739 | && htab->elf.data_index_section != NULL) | |
13740 | osec = htab->elf.data_index_section; | |
13741 | else | |
13742 | osec = htab->elf.text_index_section; | |
13743 | indx = elf_section_data (osec)->dynindx; | |
13744 | } | |
13745 | BFD_ASSERT (indx != 0); | |
13746 | ||
65f38f15 AM |
13747 | /* We are turning this relocation into one |
13748 | against a section symbol, so subtract out | |
13749 | the output section's address but not the | |
13750 | offset of the input section in the output | |
13751 | section. */ | |
13752 | outrel.r_addend -= osec->vma; | |
13753 | } | |
13754 | ||
13755 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
13756 | } | |
13757 | } | |
13758 | ||
13759 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
13760 | if (h != NULL |
13761 | ? h->elf.type == STT_GNU_IFUNC | |
13762 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
25f23106 | 13763 | sreloc = htab->reliplt; |
65f38f15 AM |
13764 | if (sreloc == NULL) |
13765 | abort (); | |
13766 | ||
dfbb6ac9 AM |
13767 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
13768 | >= sreloc->size) | |
13769 | abort (); | |
947216bf AM |
13770 | loc = sreloc->contents; |
13771 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
13772 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
13773 | ||
13774 | /* If this reloc is against an external symbol, it will | |
13775 | be computed at runtime, so there's no need to do | |
81407a69 AM |
13776 | anything now. However, for the sake of prelink ensure |
13777 | that the section contents are a known value. */ | |
65f38f15 | 13778 | if (! relocate) |
81407a69 AM |
13779 | { |
13780 | unresolved_reloc = FALSE; | |
13781 | /* The value chosen here is quite arbitrary as ld.so | |
13782 | ignores section contents except for the special | |
13783 | case of .opd where the contents might be accessed | |
13784 | before relocation. Choose zero, as that won't | |
13785 | cause reloc overflow. */ | |
13786 | relocation = 0; | |
13787 | addend = 0; | |
13788 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
13789 | to improve backward compatibility with older | |
13790 | versions of ld. */ | |
13791 | if (r_type == R_PPC64_ADDR64) | |
13792 | addend = outrel.r_addend; | |
13793 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 13794 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
13795 | addend = (input_section->output_section->vma |
13796 | + input_section->output_offset | |
13797 | + rel->r_offset); | |
81407a69 | 13798 | } |
65f38f15 | 13799 | } |
5bd4f169 AM |
13800 | break; |
13801 | ||
65f38f15 AM |
13802 | case R_PPC64_COPY: |
13803 | case R_PPC64_GLOB_DAT: | |
13804 | case R_PPC64_JMP_SLOT: | |
25f23106 | 13805 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
13806 | case R_PPC64_RELATIVE: |
13807 | /* We shouldn't ever see these dynamic relocs in relocatable | |
13808 | files. */ | |
ae9a127f | 13809 | /* Fall through. */ |
65f38f15 AM |
13810 | |
13811 | case R_PPC64_PLTGOT16: | |
13812 | case R_PPC64_PLTGOT16_DS: | |
13813 | case R_PPC64_PLTGOT16_HA: | |
13814 | case R_PPC64_PLTGOT16_HI: | |
13815 | case R_PPC64_PLTGOT16_LO: | |
13816 | case R_PPC64_PLTGOT16_LO_DS: | |
13817 | case R_PPC64_PLTREL32: | |
13818 | case R_PPC64_PLTREL64: | |
13819 | /* These ones haven't been implemented yet. */ | |
13820 | ||
25f53a85 | 13821 | info->callbacks->einfo |
bc30df16 | 13822 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 13823 | input_bfd, |
4ce794b7 | 13824 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
13825 | |
13826 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 13827 | ret = FALSE; |
5bd4f169 | 13828 | continue; |
65f38f15 | 13829 | } |
5bd4f169 | 13830 | |
67f0cbdb AM |
13831 | /* Multi-instruction sequences that access the TOC can be |
13832 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
13833 | to nop; addi rb,r2,x; */ | |
13834 | switch (r_type) | |
13835 | { | |
13836 | default: | |
13837 | break; | |
13838 | ||
13839 | case R_PPC64_GOT_TLSLD16_HI: | |
13840 | case R_PPC64_GOT_TLSGD16_HI: | |
13841 | case R_PPC64_GOT_TPREL16_HI: | |
13842 | case R_PPC64_GOT_DTPREL16_HI: | |
13843 | case R_PPC64_GOT16_HI: | |
13844 | case R_PPC64_TOC16_HI: | |
13845 | /* These relocs would only be useful if building up an | |
13846 | offset to later add to r2, perhaps in an indexed | |
13847 | addressing mode instruction. Don't try to optimize. | |
13848 | Unfortunately, the possibility of someone building up an | |
13849 | offset like this or even with the HA relocs, means that | |
13850 | we need to check the high insn when optimizing the low | |
13851 | insn. */ | |
13852 | break; | |
13853 | ||
13854 | case R_PPC64_GOT_TLSLD16_HA: | |
13855 | case R_PPC64_GOT_TLSGD16_HA: | |
13856 | case R_PPC64_GOT_TPREL16_HA: | |
13857 | case R_PPC64_GOT_DTPREL16_HA: | |
13858 | case R_PPC64_GOT16_HA: | |
13859 | case R_PPC64_TOC16_HA: | |
98528052 | 13860 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 13861 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
13862 | { |
13863 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13864 | bfd_put_32 (input_bfd, NOP, p); | |
13865 | } | |
67f0cbdb AM |
13866 | break; |
13867 | ||
13868 | case R_PPC64_GOT_TLSLD16_LO: | |
13869 | case R_PPC64_GOT_TLSGD16_LO: | |
13870 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13871 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13872 | case R_PPC64_GOT16_LO: | |
13873 | case R_PPC64_GOT16_LO_DS: | |
13874 | case R_PPC64_TOC16_LO: | |
13875 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 13876 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 13877 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
13878 | { |
13879 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13880 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
13881 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
13882 | { | |
13883 | /* Transform addic to addi when we change reg. */ | |
13884 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
13885 | insn |= (14u << 26) | (2 << 16); | |
13886 | } | |
13887 | else | |
67f0cbdb | 13888 | { |
98528052 AM |
13889 | insn &= ~(0x1f << 16); |
13890 | insn |= 2 << 16; | |
67f0cbdb | 13891 | } |
560c8763 | 13892 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
13893 | } |
13894 | break; | |
13895 | } | |
13896 | ||
65f38f15 AM |
13897 | /* Do any further special processing. */ |
13898 | switch (r_type) | |
13899 | { | |
13900 | default: | |
13901 | break; | |
13902 | ||
13903 | case R_PPC64_ADDR16_HA: | |
25f23106 | 13904 | case R_PPC64_REL16_HA: |
65f38f15 AM |
13905 | case R_PPC64_ADDR16_HIGHERA: |
13906 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
13907 | case R_PPC64_TOC16_HA: |
13908 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
13909 | case R_PPC64_TPREL16_HA: |
13910 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
13911 | case R_PPC64_TPREL16_HIGHER: |
13912 | case R_PPC64_TPREL16_HIGHERA: | |
13913 | case R_PPC64_TPREL16_HIGHEST: | |
13914 | case R_PPC64_TPREL16_HIGHESTA: | |
13915 | case R_PPC64_DTPREL16_HIGHER: | |
13916 | case R_PPC64_DTPREL16_HIGHERA: | |
13917 | case R_PPC64_DTPREL16_HIGHEST: | |
13918 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
13919 | /* It's just possible that this symbol is a weak symbol |
13920 | that's not actually defined anywhere. In that case, | |
13921 | 'sec' would be NULL, and we should leave the symbol | |
13922 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
13923 | if (sec == NULL) |
13924 | break; | |
13925 | /* Fall thru */ | |
13926 | ||
13927 | case R_PPC64_GOT16_HA: | |
13928 | case R_PPC64_PLTGOT16_HA: | |
13929 | case R_PPC64_PLT16_HA: | |
13930 | case R_PPC64_GOT_TLSGD16_HA: | |
13931 | case R_PPC64_GOT_TLSLD16_HA: | |
13932 | case R_PPC64_GOT_TPREL16_HA: | |
13933 | case R_PPC64_GOT_DTPREL16_HA: | |
13934 | /* Add 0x10000 if sign bit in 0:15 is set. | |
13935 | Bits 0:15 are not used. */ | |
13936 | addend += 0x8000; | |
65f38f15 AM |
13937 | break; |
13938 | ||
13939 | case R_PPC64_ADDR16_DS: | |
13940 | case R_PPC64_ADDR16_LO_DS: | |
13941 | case R_PPC64_GOT16_DS: | |
13942 | case R_PPC64_GOT16_LO_DS: | |
13943 | case R_PPC64_PLT16_LO_DS: | |
13944 | case R_PPC64_SECTOFF_DS: | |
13945 | case R_PPC64_SECTOFF_LO_DS: | |
13946 | case R_PPC64_TOC16_DS: | |
13947 | case R_PPC64_TOC16_LO_DS: | |
13948 | case R_PPC64_PLTGOT16_DS: | |
13949 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
13950 | case R_PPC64_GOT_TPREL16_DS: |
13951 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13952 | case R_PPC64_GOT_DTPREL16_DS: | |
13953 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13954 | case R_PPC64_TPREL16_DS: | |
13955 | case R_PPC64_TPREL16_LO_DS: | |
13956 | case R_PPC64_DTPREL16_DS: | |
13957 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
13958 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
13959 | mask = 3; | |
13960 | /* If this reloc is against an lq insn, then the value must be | |
13961 | a multiple of 16. This is somewhat of a hack, but the | |
13962 | "correct" way to do this by defining _DQ forms of all the | |
13963 | _DS relocs bloats all reloc switches in this file. It | |
13964 | doesn't seem to make much sense to use any of these relocs | |
13965 | in data, so testing the insn should be safe. */ | |
494dac0c | 13966 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
13967 | mask = 15; |
13968 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 13969 | { |
25f53a85 | 13970 | info->callbacks->einfo |
8de848d8 | 13971 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 13972 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 13973 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 13974 | mask + 1); |
65f38f15 | 13975 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13976 | ret = FALSE; |
65f38f15 AM |
13977 | continue; |
13978 | } | |
13979 | break; | |
5bd4f169 AM |
13980 | } |
13981 | ||
239e1f3a AM |
13982 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
13983 | because such sections are not SEC_ALLOC and thus ld.so will | |
13984 | not process them. */ | |
65f38f15 | 13985 | if (unresolved_reloc |
239e1f3a | 13986 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
13987 | && h->elf.def_dynamic) |
13988 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
13989 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 13990 | { |
25f53a85 | 13991 | info->callbacks->einfo |
bc30df16 | 13992 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 13993 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 13994 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 13995 | h->elf.root.root.string); |
b34976b6 | 13996 | ret = FALSE; |
9c07fe7c | 13997 | } |
5bd4f169 | 13998 | |
65f38f15 | 13999 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
14000 | input_bfd, |
14001 | input_section, | |
14002 | contents, | |
411e1bfb | 14003 | rel->r_offset, |
5bd4f169 AM |
14004 | relocation, |
14005 | addend); | |
14006 | ||
ef60b7ff | 14007 | if (r != bfd_reloc_ok) |
5bd4f169 | 14008 | { |
bc30df16 AM |
14009 | char *more_info = NULL; |
14010 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
14011 | ||
14012 | if (reloc_dest != DEST_NORMAL) | |
14013 | { | |
14014 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14015 | if (more_info != NULL) | |
14016 | { | |
14017 | strcpy (more_info, reloc_name); | |
14018 | strcat (more_info, (reloc_dest == DEST_OPD | |
14019 | ? " (OPD)" : " (stub)")); | |
14020 | reloc_name = more_info; | |
14021 | } | |
14022 | } | |
14023 | ||
cd27b276 | 14024 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14025 | { |
cd27b276 AM |
14026 | if (warned) |
14027 | continue; | |
14028 | if (h != NULL | |
039b3fef | 14029 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 14030 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
14031 | { |
14032 | /* Assume this is a call protected by other code that | |
14033 | detects the symbol is undefined. If this is the case, | |
14034 | we can safely ignore the overflow. If not, the | |
14035 | program is hosed anyway, and a little warning isn't | |
14036 | going to help. */ | |
14037 | ||
14038 | continue; | |
14039 | } | |
14040 | ||
ef60b7ff | 14041 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14042 | (info, &h->elf.root, sym_name, |
14043 | reloc_name, orig_rel.r_addend, | |
14044 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14045 | return FALSE; |
ef60b7ff AM |
14046 | } |
14047 | else | |
14048 | { | |
25f53a85 | 14049 | info->callbacks->einfo |
bc30df16 | 14050 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14051 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14052 | reloc_name, sym_name, (int) r); |
b34976b6 | 14053 | ret = FALSE; |
ef60b7ff | 14054 | } |
bc30df16 AM |
14055 | if (more_info != NULL) |
14056 | free (more_info); | |
5bd4f169 | 14057 | } |
5bd4f169 AM |
14058 | } |
14059 | ||
645ea6a9 AM |
14060 | /* If we're emitting relocations, then shortly after this function |
14061 | returns, reloc offsets and addends for this section will be | |
14062 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14063 | file rather than the input. Save a copy of the relocs for |
14064 | opd_entry_value. */ | |
4cc603a5 | 14065 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14066 | { |
14067 | bfd_size_type amt; | |
14068 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14069 | rel = bfd_alloc (input_bfd, amt); | |
14070 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
14071 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
14072 | if (rel == NULL) | |
14073 | return FALSE; | |
14074 | memcpy (rel, relocs, amt); | |
14075 | } | |
5bd4f169 AM |
14076 | return ret; |
14077 | } | |
14078 | ||
754021d0 AM |
14079 | /* Adjust the value of any local symbols in opd sections. */ |
14080 | ||
6e0b88f1 | 14081 | static int |
754021d0 AM |
14082 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14083 | const char *name ATTRIBUTE_UNUSED, | |
14084 | Elf_Internal_Sym *elfsym, | |
14085 | asection *input_sec, | |
14086 | struct elf_link_hash_entry *h) | |
14087 | { | |
74f0fb50 AM |
14088 | struct _opd_sec_data *opd; |
14089 | long adjust; | |
754021d0 AM |
14090 | bfd_vma value; |
14091 | ||
4025353c | 14092 | if (h != NULL) |
6e0b88f1 | 14093 | return 1; |
4025353c | 14094 | |
74f0fb50 AM |
14095 | opd = get_opd_info (input_sec); |
14096 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14097 | return 1; |
754021d0 AM |
14098 | |
14099 | value = elfsym->st_value - input_sec->output_offset; | |
14100 | if (!info->relocatable) | |
14101 | value -= input_sec->output_section->vma; | |
14102 | ||
74f0fb50 | 14103 | adjust = opd->adjust[value / 8]; |
4025353c | 14104 | if (adjust == -1) |
6e0b88f1 AM |
14105 | return 2; |
14106 | ||
14107 | elfsym->st_value += adjust; | |
14108 | return 1; | |
754021d0 AM |
14109 | } |
14110 | ||
5bd4f169 AM |
14111 | /* Finish up dynamic symbol handling. We set the contents of various |
14112 | dynamic sections here. */ | |
14113 | ||
b34976b6 | 14114 | static bfd_boolean |
4ce794b7 AM |
14115 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14116 | struct bfd_link_info *info, | |
14117 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14118 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14119 | { |
65f38f15 | 14120 | struct ppc_link_hash_table *htab; |
8387904d AM |
14121 | struct plt_entry *ent; |
14122 | Elf_Internal_Rela rela; | |
14123 | bfd_byte *loc; | |
5bd4f169 | 14124 | |
65f38f15 | 14125 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14126 | if (htab == NULL) |
14127 | return FALSE; | |
5bd4f169 | 14128 | |
8387904d AM |
14129 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14130 | if (ent->plt.offset != (bfd_vma) -1) | |
14131 | { | |
14132 | /* This symbol has an entry in the procedure linkage | |
14133 | table. Set it up. */ | |
e054468f AM |
14134 | if (!htab->elf.dynamic_sections_created |
14135 | || h->dynindx == -1) | |
14136 | { | |
14137 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14138 | && h->def_regular | |
14139 | && (h->root.type == bfd_link_hash_defined | |
14140 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
14141 | rela.r_offset = (htab->iplt->output_section->vma |
14142 | + htab->iplt->output_offset | |
14143 | + ent->plt.offset); | |
14144 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
14145 | rela.r_addend = (h->root.u.def.value |
14146 | + h->root.u.def.section->output_offset | |
14147 | + h->root.u.def.section->output_section->vma | |
14148 | + ent->addend); | |
25f23106 AM |
14149 | loc = (htab->reliplt->contents |
14150 | + (htab->reliplt->reloc_count++ | |
14151 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
14152 | } |
14153 | else | |
14154 | { | |
25f23106 AM |
14155 | rela.r_offset = (htab->plt->output_section->vma |
14156 | + htab->plt->output_offset | |
14157 | + ent->plt.offset); | |
e054468f AM |
14158 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14159 | rela.r_addend = ent->addend; | |
25f23106 AM |
14160 | loc = (htab->relplt->contents |
14161 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
14162 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 14163 | } |
8387904d AM |
14164 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
14165 | } | |
5bd4f169 | 14166 | |
f5385ebf | 14167 | if (h->needs_copy) |
5bd4f169 | 14168 | { |
65f38f15 | 14169 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14170 | |
65f38f15 AM |
14171 | if (h->dynindx == -1 |
14172 | || (h->root.type != bfd_link_hash_defined | |
14173 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14174 | || htab->relbss == NULL) |
65f38f15 | 14175 | abort (); |
5bd4f169 AM |
14176 | |
14177 | rela.r_offset = (h->root.u.def.value | |
14178 | + h->root.u.def.section->output_section->vma | |
14179 | + h->root.u.def.section->output_offset); | |
14180 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14181 | rela.r_addend = 0; | |
4ce794b7 AM |
14182 | loc = htab->relbss->contents; |
14183 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14184 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14185 | } |
14186 | ||
b34976b6 | 14187 | return TRUE; |
5bd4f169 AM |
14188 | } |
14189 | ||
65f38f15 AM |
14190 | /* Used to decide how to sort relocs in an optimal manner for the |
14191 | dynamic linker, before writing them out. */ | |
14192 | ||
14193 | static enum elf_reloc_type_class | |
7e612e98 AM |
14194 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14195 | const asection *rel_sec, | |
14196 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14197 | { |
04c9666a | 14198 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14199 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14200 | ||
14201 | if (rel_sec == htab->reliplt) | |
14202 | return reloc_class_ifunc; | |
a33d1f77 | 14203 | |
4ce794b7 | 14204 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14205 | switch (r_type) |
65f38f15 AM |
14206 | { |
14207 | case R_PPC64_RELATIVE: | |
14208 | return reloc_class_relative; | |
14209 | case R_PPC64_JMP_SLOT: | |
14210 | return reloc_class_plt; | |
14211 | case R_PPC64_COPY: | |
14212 | return reloc_class_copy; | |
14213 | default: | |
14214 | return reloc_class_normal; | |
14215 | } | |
14216 | } | |
14217 | ||
5bd4f169 AM |
14218 | /* Finish up the dynamic sections. */ |
14219 | ||
b34976b6 | 14220 | static bfd_boolean |
4ce794b7 AM |
14221 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14222 | struct bfd_link_info *info) | |
5bd4f169 | 14223 | { |
65f38f15 AM |
14224 | struct ppc_link_hash_table *htab; |
14225 | bfd *dynobj; | |
5bd4f169 | 14226 | asection *sdyn; |
5bd4f169 | 14227 | |
65f38f15 | 14228 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14229 | if (htab == NULL) |
14230 | return FALSE; | |
14231 | ||
65f38f15 | 14232 | dynobj = htab->elf.dynobj; |
3d4d4302 | 14233 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 14234 | |
65f38f15 | 14235 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 14236 | { |
5bd4f169 AM |
14237 | Elf64_External_Dyn *dyncon, *dynconend; |
14238 | ||
4ce794b7 | 14239 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 14240 | abort (); |
5bd4f169 AM |
14241 | |
14242 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 14243 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
14244 | for (; dyncon < dynconend; dyncon++) |
14245 | { | |
14246 | Elf_Internal_Dyn dyn; | |
19397422 | 14247 | asection *s; |
5bd4f169 AM |
14248 | |
14249 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
14250 | ||
14251 | switch (dyn.d_tag) | |
14252 | { | |
65f38f15 AM |
14253 | default: |
14254 | continue; | |
5bd4f169 | 14255 | |
5d1634d7 | 14256 | case DT_PPC64_GLINK: |
4ce794b7 | 14257 | s = htab->glink; |
6348e046 | 14258 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
14259 | /* We stupidly defined DT_PPC64_GLINK to be the start |
14260 | of glink rather than the first entry point, which is | |
14261 | what ld.so needs, and now have a bigger stub to | |
14262 | support automatic multiple TOCs. */ | |
14263 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
14264 | break; |
14265 | ||
19397422 AM |
14266 | case DT_PPC64_OPD: |
14267 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14268 | if (s == NULL) |
14269 | continue; | |
14270 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
14271 | break; |
14272 | ||
14273 | case DT_PPC64_OPDSZ: | |
14274 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14275 | if (s == NULL) |
14276 | continue; | |
eea6121a | 14277 | dyn.d_un.d_val = s->size; |
19397422 AM |
14278 | break; |
14279 | ||
65f38f15 | 14280 | case DT_PLTGOT: |
4ce794b7 | 14281 | s = htab->plt; |
6348e046 | 14282 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
14283 | break; |
14284 | ||
14285 | case DT_JMPREL: | |
4ce794b7 | 14286 | s = htab->relplt; |
6348e046 | 14287 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 14288 | break; |
5bd4f169 | 14289 | |
65f38f15 | 14290 | case DT_PLTRELSZ: |
eea6121a | 14291 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
14292 | break; |
14293 | ||
14294 | case DT_RELASZ: | |
14295 | /* Don't count procedure linkage table relocs in the | |
14296 | overall reloc count. */ | |
4ce794b7 | 14297 | s = htab->relplt; |
6348e046 AM |
14298 | if (s == NULL) |
14299 | continue; | |
eea6121a | 14300 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
14301 | break; |
14302 | ||
14303 | case DT_RELA: | |
14304 | /* We may not be using the standard ELF linker script. | |
14305 | If .rela.plt is the first .rela section, we adjust | |
14306 | DT_RELA to not include it. */ | |
4ce794b7 | 14307 | s = htab->relplt; |
6348e046 AM |
14308 | if (s == NULL) |
14309 | continue; | |
14310 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
14311 | continue; | |
eea6121a | 14312 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 14313 | break; |
5bd4f169 | 14314 | } |
5bd4f169 | 14315 | |
65f38f15 | 14316 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 14317 | } |
5bd4f169 AM |
14318 | } |
14319 | ||
eea6121a | 14320 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
14321 | { |
14322 | /* Fill in the first entry in the global offset table. | |
14323 | We use it to hold the link-time TOCbase. */ | |
14324 | bfd_put_64 (output_bfd, | |
60ee0d4a | 14325 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 14326 | htab->got->contents); |
5d1634d7 AM |
14327 | |
14328 | /* Set .got entry size. */ | |
4ce794b7 | 14329 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
14330 | } |
14331 | ||
eea6121a | 14332 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
14333 | { |
14334 | /* Set .plt entry size. */ | |
4ce794b7 | 14335 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
14336 | = PLT_ENTRY_SIZE; |
14337 | } | |
14338 | ||
84f5d08e AM |
14339 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
14340 | brlt ourselves if emitrelocations. */ | |
14341 | if (htab->brlt != NULL | |
14342 | && htab->brlt->reloc_count != 0 | |
14343 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14344 | htab->brlt, | |
d4730f92 | 14345 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
14346 | elf_section_data (htab->brlt)->relocs, |
14347 | NULL)) | |
14348 | return FALSE; | |
14349 | ||
176a0d42 AM |
14350 | if (htab->glink != NULL |
14351 | && htab->glink->reloc_count != 0 | |
14352 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14353 | htab->glink, | |
d4730f92 | 14354 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
14355 | elf_section_data (htab->glink)->relocs, |
14356 | NULL)) | |
14357 | return FALSE; | |
14358 | ||
58d180e8 AM |
14359 | |
14360 | if (htab->glink_eh_frame != NULL | |
dbaa2011 | 14361 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
58d180e8 AM |
14362 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
14363 | htab->glink_eh_frame, | |
14364 | htab->glink_eh_frame->contents)) | |
14365 | return FALSE; | |
14366 | ||
e717da7e | 14367 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
14368 | since we didn't add them to DYNOBJ. We know dynobj is the first |
14369 | bfd. */ | |
e717da7e AM |
14370 | while ((dynobj = dynobj->link_next) != NULL) |
14371 | { | |
14372 | asection *s; | |
7b53ace3 | 14373 | |
0c8d6e5c | 14374 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
14375 | continue; |
14376 | ||
e717da7e AM |
14377 | s = ppc64_elf_tdata (dynobj)->got; |
14378 | if (s != NULL | |
eea6121a | 14379 | && s->size != 0 |
e717da7e AM |
14380 | && s->output_section != bfd_abs_section_ptr |
14381 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14382 | s->contents, s->output_offset, | |
eea6121a | 14383 | s->size)) |
e717da7e AM |
14384 | return FALSE; |
14385 | s = ppc64_elf_tdata (dynobj)->relgot; | |
14386 | if (s != NULL | |
eea6121a | 14387 | && s->size != 0 |
e717da7e AM |
14388 | && s->output_section != bfd_abs_section_ptr |
14389 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14390 | s->contents, s->output_offset, | |
eea6121a | 14391 | s->size)) |
e717da7e AM |
14392 | return FALSE; |
14393 | } | |
f6c52c13 | 14394 | |
b34976b6 | 14395 | return TRUE; |
5bd4f169 AM |
14396 | } |
14397 | ||
5bd4f169 | 14398 | #include "elf64-target.h" |
7b8e7dad AM |
14399 | |
14400 | /* FreeBSD support */ | |
14401 | ||
14402 | #undef TARGET_LITTLE_SYM | |
14403 | #undef TARGET_LITTLE_NAME | |
14404 | ||
14405 | #undef TARGET_BIG_SYM | |
14406 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
14407 | #undef TARGET_BIG_NAME | |
14408 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
14409 | ||
14410 | #undef ELF_OSABI | |
14411 | #define ELF_OSABI ELFOSABI_FREEBSD | |
14412 | ||
14413 | #undef elf64_bed | |
14414 | #define elf64_bed elf64_powerpc_fbsd_bed | |
14415 | ||
14416 | #include "elf64-target.h" | |
14417 |