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 |
e5034e59 | 99 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
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 | 2617 | |
729eabd5 AM |
2618 | union { |
2619 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2620 | Elf_Internal_Rela *relocs; | |
2621 | ||
2622 | /* Section contents. */ | |
2623 | bfd_byte *contents; | |
2624 | } opd; | |
d77c8a4b AM |
2625 | |
2626 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2627 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2628 | unsigned int has_small_toc_reloc : 1; |
2629 | ||
560c8763 AM |
2630 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2631 | instruction not one we handle. */ | |
2632 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2633 | }; |
2634 | ||
2635 | #define ppc64_elf_tdata(bfd) \ | |
2636 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2637 | ||
2638 | #define ppc64_tlsld_got(bfd) \ | |
2639 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2640 | ||
0c8d6e5c AM |
2641 | #define is_ppc64_elf(bfd) \ |
2642 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2643 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2644 | |
e717da7e AM |
2645 | /* Override the generic function because we store some extras. */ |
2646 | ||
2647 | static bfd_boolean | |
2648 | ppc64_elf_mkobject (bfd *abfd) | |
2649 | { | |
0ffa91dd | 2650 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2651 | PPC64_ELF_DATA); |
e717da7e AM |
2652 | } |
2653 | ||
feee612b AM |
2654 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2655 | default is 32 bit. */ | |
2656 | ||
b34976b6 | 2657 | static bfd_boolean |
4ce794b7 | 2658 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2659 | { |
2660 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2661 | { | |
2662 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2663 | ||
2664 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2665 | { | |
2666 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2667 | abfd->arch_info = abfd->arch_info->next; | |
2668 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2669 | } | |
2670 | } | |
b34976b6 | 2671 | return TRUE; |
feee612b AM |
2672 | } |
2673 | ||
d37c89e5 AM |
2674 | /* Support for core dump NOTE sections. */ |
2675 | ||
2676 | static bfd_boolean | |
2677 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2678 | { | |
eea6121a | 2679 | size_t offset, size; |
d37c89e5 AM |
2680 | |
2681 | if (note->descsz != 504) | |
2682 | return FALSE; | |
2683 | ||
2684 | /* pr_cursig */ | |
228e534f | 2685 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2686 | |
2687 | /* pr_pid */ | |
228e534f | 2688 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2689 | |
2690 | /* pr_reg */ | |
2691 | offset = 112; | |
eea6121a | 2692 | size = 384; |
d37c89e5 AM |
2693 | |
2694 | /* Make a ".reg/999" section. */ | |
2695 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2696 | size, note->descpos + offset); |
d37c89e5 AM |
2697 | } |
2698 | ||
2699 | static bfd_boolean | |
2700 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2701 | { | |
2702 | if (note->descsz != 136) | |
2703 | return FALSE; | |
2704 | ||
228e534f | 2705 | elf_tdata (abfd)->core->pid |
bc989cdc | 2706 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2707 | elf_tdata (abfd)->core->program |
d37c89e5 | 2708 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2709 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2710 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2711 | ||
2712 | return TRUE; | |
2713 | } | |
2714 | ||
183e98be AM |
2715 | static char * |
2716 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2717 | ...) | |
2718 | { | |
2719 | switch (note_type) | |
2720 | { | |
2721 | default: | |
2722 | return NULL; | |
2723 | ||
2724 | case NT_PRPSINFO: | |
2725 | { | |
2726 | char data[136]; | |
2727 | va_list ap; | |
2728 | ||
2729 | va_start (ap, note_type); | |
75cd47ed | 2730 | memset (data, 0, sizeof (data)); |
183e98be AM |
2731 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2732 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2733 | va_end (ap); | |
2734 | return elfcore_write_note (abfd, buf, bufsiz, | |
2735 | "CORE", note_type, data, sizeof (data)); | |
2736 | } | |
2737 | ||
2738 | case NT_PRSTATUS: | |
2739 | { | |
2740 | char data[504]; | |
2741 | va_list ap; | |
2742 | long pid; | |
2743 | int cursig; | |
2744 | const void *greg; | |
2745 | ||
2746 | va_start (ap, note_type); | |
2747 | memset (data, 0, 112); | |
2748 | pid = va_arg (ap, long); | |
2749 | bfd_put_32 (abfd, pid, data + 32); | |
2750 | cursig = va_arg (ap, int); | |
2751 | bfd_put_16 (abfd, cursig, data + 12); | |
2752 | greg = va_arg (ap, const void *); | |
2753 | memcpy (data + 112, greg, 384); | |
2754 | memset (data + 496, 0, 8); | |
2755 | va_end (ap); | |
2756 | return elfcore_write_note (abfd, buf, bufsiz, | |
2757 | "CORE", note_type, data, sizeof (data)); | |
2758 | } | |
2759 | } | |
2760 | } | |
2761 | ||
5d35169e AM |
2762 | /* Add extra PPC sections. */ |
2763 | ||
b35d266b | 2764 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2765 | { |
0112cd26 NC |
2766 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2767 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2768 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2769 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2770 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2771 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2772 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2773 | }; |
2774 | ||
7c8fe5c4 AM |
2775 | enum _ppc64_sec_type { |
2776 | sec_normal = 0, | |
2777 | sec_opd = 1, | |
2778 | sec_toc = 2 | |
2779 | }; | |
2780 | ||
f0abc2a1 AM |
2781 | struct _ppc64_elf_section_data |
2782 | { | |
2783 | struct bfd_elf_section_data elf; | |
411e1bfb | 2784 | |
f0abc2a1 AM |
2785 | union |
2786 | { | |
74f0fb50 AM |
2787 | /* An array with one entry for each opd function descriptor. */ |
2788 | struct _opd_sec_data | |
2789 | { | |
2790 | /* Points to the function code section for local opd entries. */ | |
2791 | asection **func_sec; | |
2792 | ||
2793 | /* After editing .opd, adjust references to opd local syms. */ | |
2794 | long *adjust; | |
2795 | } opd; | |
7c8fe5c4 | 2796 | |
3a71aa26 AM |
2797 | /* An array for toc sections, indexed by offset/8. */ |
2798 | struct _toc_sec_data | |
2799 | { | |
2800 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2801 | unsigned *symndx; | |
2802 | ||
2803 | /* And the relocation addend. */ | |
2804 | bfd_vma *add; | |
2805 | } toc; | |
7c8fe5c4 AM |
2806 | } u; |
2807 | ||
2808 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2809 | |
7c8fe5c4 AM |
2810 | /* Flag set when small branches are detected. Used to |
2811 | select suitable defaults for the stub group size. */ | |
2812 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2813 | }; |
2814 | ||
2815 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2816 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2817 | |
2818 | static bfd_boolean | |
4ce794b7 | 2819 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2820 | { |
f592407e AM |
2821 | if (!sec->used_by_bfd) |
2822 | { | |
2823 | struct _ppc64_elf_section_data *sdata; | |
2824 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2825 | |
f592407e AM |
2826 | sdata = bfd_zalloc (abfd, amt); |
2827 | if (sdata == NULL) | |
2828 | return FALSE; | |
2829 | sec->used_by_bfd = sdata; | |
2830 | } | |
f0abc2a1 AM |
2831 | |
2832 | return _bfd_elf_new_section_hook (abfd, sec); | |
2833 | } | |
4025353c | 2834 | |
74f0fb50 | 2835 | static struct _opd_sec_data * |
4025353c AM |
2836 | get_opd_info (asection * sec) |
2837 | { | |
2838 | if (sec != NULL | |
2839 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2840 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2841 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2842 | return NULL; |
2843 | } | |
90e3cdf2 JJ |
2844 | \f |
2845 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2846 | static bfd_boolean synthetic_relocatable; |
2847 | ||
699733f6 | 2848 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2849 | |
2850 | static int | |
2851 | compare_symbols (const void *ap, const void *bp) | |
2852 | { | |
2853 | const asymbol *a = * (const asymbol **) ap; | |
2854 | const asymbol *b = * (const asymbol **) bp; | |
2855 | ||
699733f6 AM |
2856 | /* Section symbols first. */ |
2857 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2858 | return -1; |
699733f6 | 2859 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2860 | return 1; |
2861 | ||
699733f6 | 2862 | /* then .opd symbols. */ |
ffcfec52 AM |
2863 | if (strcmp (a->section->name, ".opd") == 0 |
2864 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2865 | return -1; |
ffcfec52 AM |
2866 | if (strcmp (a->section->name, ".opd") != 0 |
2867 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2868 | return 1; |
2869 | ||
699733f6 | 2870 | /* then other code symbols. */ |
90e3cdf2 JJ |
2871 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2872 | == (SEC_CODE | SEC_ALLOC) | |
2873 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2874 | != (SEC_CODE | SEC_ALLOC)) | |
2875 | return -1; | |
2876 | ||
2877 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2878 | != (SEC_CODE | SEC_ALLOC) | |
2879 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2880 | == (SEC_CODE | SEC_ALLOC)) | |
2881 | return 1; | |
2882 | ||
2883 | if (synthetic_relocatable) | |
2884 | { | |
2885 | if (a->section->id < b->section->id) | |
2886 | return -1; | |
2887 | ||
2888 | if (a->section->id > b->section->id) | |
2889 | return 1; | |
2890 | } | |
2891 | ||
2892 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2893 | return -1; | |
2894 | ||
2895 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2896 | return 1; | |
2897 | ||
4d35a0aa AM |
2898 | /* For syms with the same value, prefer strong dynamic global function |
2899 | syms over other syms. */ | |
2900 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2901 | return -1; | |
2902 | ||
2903 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2904 | return 1; | |
2905 | ||
2906 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2907 | return -1; | |
2908 | ||
2909 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2910 | return 1; | |
2911 | ||
2912 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2913 | return -1; | |
2914 | ||
2915 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2916 | return 1; | |
2917 | ||
2918 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2919 | return -1; | |
2920 | ||
2921 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2922 | return 1; | |
2923 | ||
90e3cdf2 JJ |
2924 | return 0; |
2925 | } | |
2926 | ||
699733f6 | 2927 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2928 | |
699733f6 AM |
2929 | static asymbol * |
2930 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2931 | { |
699733f6 | 2932 | long mid; |
90e3cdf2 | 2933 | |
699733f6 AM |
2934 | if (id == -1) |
2935 | { | |
2936 | while (lo < hi) | |
2937 | { | |
2938 | mid = (lo + hi) >> 1; | |
2939 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2940 | lo = mid + 1; | |
2941 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2942 | hi = mid; | |
2943 | else | |
2944 | return syms[mid]; | |
2945 | } | |
2946 | } | |
2947 | else | |
2948 | { | |
2949 | while (lo < hi) | |
2950 | { | |
2951 | mid = (lo + hi) >> 1; | |
2952 | if (syms[mid]->section->id < id) | |
2953 | lo = mid + 1; | |
2954 | else if (syms[mid]->section->id > id) | |
2955 | hi = mid; | |
2956 | else if (syms[mid]->value < value) | |
2957 | lo = mid + 1; | |
2958 | else if (syms[mid]->value > value) | |
2959 | hi = mid; | |
2960 | else | |
2961 | return syms[mid]; | |
2962 | } | |
2963 | } | |
2964 | return NULL; | |
90e3cdf2 JJ |
2965 | } |
2966 | ||
468392fb AM |
2967 | static bfd_boolean |
2968 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2969 | { | |
2970 | bfd_vma vma = *(bfd_vma *) ptr; | |
2971 | return ((section->flags & SEC_ALLOC) != 0 | |
2972 | && section->vma <= vma | |
2973 | && vma < section->vma + section->size); | |
2974 | } | |
2975 | ||
699733f6 | 2976 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2977 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2978 | |
2979 | static long | |
a7535cf3 AM |
2980 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2981 | long static_count, asymbol **static_syms, | |
2982 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2983 | asymbol **ret) |
90e3cdf2 JJ |
2984 | { |
2985 | asymbol *s; | |
699733f6 AM |
2986 | long i; |
2987 | long count; | |
90e3cdf2 | 2988 | char *names; |
a7535cf3 | 2989 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2990 | asection *opd; |
90e3cdf2 | 2991 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2992 | asymbol **syms; |
90e3cdf2 JJ |
2993 | |
2994 | *ret = NULL; | |
2995 | ||
2996 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2997 | if (opd == NULL) | |
2998 | return 0; | |
2999 | ||
a7535cf3 | 3000 | symcount = static_count; |
c9727e01 | 3001 | if (!relocatable) |
a7535cf3 | 3002 | symcount += dyn_count; |
90e3cdf2 | 3003 | if (symcount == 0) |
c9727e01 | 3004 | return 0; |
90e3cdf2 | 3005 | |
a7535cf3 AM |
3006 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3007 | if (syms == NULL) | |
7356fed5 | 3008 | return -1; |
a7535cf3 AM |
3009 | |
3010 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3011 | { | |
3012 | /* Use both symbol tables. */ | |
3013 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3014 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3015 | } | |
3016 | else if (!relocatable && static_count == 0) | |
3017 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3018 | else | |
3019 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3020 | ||
90e3cdf2 | 3021 | synthetic_relocatable = relocatable; |
595da8c5 | 3022 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3023 | |
c9727e01 AM |
3024 | if (!relocatable && symcount > 1) |
3025 | { | |
3026 | long j; | |
3027 | /* Trim duplicate syms, since we may have merged the normal and | |
3028 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3029 | different values, so trim any with the same value. */ |
c9727e01 AM |
3030 | for (i = 1, j = 1; i < symcount; ++i) |
3031 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3032 | != syms[i]->value + syms[i]->section->vma) | |
3033 | syms[j++] = syms[i]; | |
3034 | symcount = j; | |
3035 | } | |
3036 | ||
699733f6 | 3037 | i = 0; |
ffcfec52 | 3038 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3039 | ++i; |
3040 | codesecsym = i; | |
90e3cdf2 | 3041 | |
699733f6 AM |
3042 | for (; i < symcount; ++i) |
3043 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3044 | != (SEC_CODE | SEC_ALLOC)) | |
3045 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3046 | break; | |
3047 | codesecsymend = i; | |
90e3cdf2 | 3048 | |
699733f6 AM |
3049 | for (; i < symcount; ++i) |
3050 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3051 | break; | |
3052 | secsymend = i; | |
90e3cdf2 | 3053 | |
699733f6 | 3054 | for (; i < symcount; ++i) |
ffcfec52 | 3055 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3056 | break; |
3057 | opdsymend = i; | |
90e3cdf2 | 3058 | |
699733f6 AM |
3059 | for (; i < symcount; ++i) |
3060 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3061 | != (SEC_CODE | SEC_ALLOC)) | |
3062 | break; | |
3063 | symcount = i; | |
3064 | ||
c9727e01 | 3065 | count = 0; |
90e3cdf2 | 3066 | |
699733f6 | 3067 | if (relocatable) |
90e3cdf2 | 3068 | { |
699733f6 AM |
3069 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3070 | arelent *r; | |
3071 | size_t size; | |
3072 | long relcount; | |
90e3cdf2 | 3073 | |
468392fb AM |
3074 | if (opdsymend == secsymend) |
3075 | goto done; | |
3076 | ||
699733f6 | 3077 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3078 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3079 | if (relcount == 0) |
c9727e01 | 3080 | goto done; |
90e3cdf2 | 3081 | |
7356fed5 AM |
3082 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3083 | { | |
3084 | count = -1; | |
3085 | goto done; | |
3086 | } | |
3087 | ||
699733f6 | 3088 | size = 0; |
595da8c5 | 3089 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3090 | { |
3091 | asymbol *sym; | |
90e3cdf2 | 3092 | |
595da8c5 | 3093 | while (r < opd->relocation + relcount |
699733f6 AM |
3094 | && r->address < syms[i]->value + opd->vma) |
3095 | ++r; | |
90e3cdf2 | 3096 | |
595da8c5 | 3097 | if (r == opd->relocation + relcount) |
699733f6 | 3098 | break; |
90e3cdf2 | 3099 | |
699733f6 AM |
3100 | if (r->address != syms[i]->value + opd->vma) |
3101 | continue; | |
90e3cdf2 | 3102 | |
699733f6 AM |
3103 | if (r->howto->type != R_PPC64_ADDR64) |
3104 | continue; | |
90e3cdf2 | 3105 | |
699733f6 AM |
3106 | sym = *r->sym_ptr_ptr; |
3107 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3108 | sym->section->id, sym->value + r->addend)) | |
3109 | { | |
3110 | ++count; | |
3111 | size += sizeof (asymbol); | |
3112 | size += strlen (syms[i]->name) + 2; | |
3113 | } | |
3114 | } | |
90e3cdf2 | 3115 | |
699733f6 AM |
3116 | s = *ret = bfd_malloc (size); |
3117 | if (s == NULL) | |
3118 | { | |
7356fed5 | 3119 | count = -1; |
c9727e01 | 3120 | goto done; |
699733f6 | 3121 | } |
90e3cdf2 | 3122 | |
699733f6 | 3123 | names = (char *) (s + count); |
90e3cdf2 | 3124 | |
595da8c5 | 3125 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3126 | { |
699733f6 | 3127 | asymbol *sym; |
90e3cdf2 | 3128 | |
595da8c5 | 3129 | while (r < opd->relocation + relcount |
699733f6 AM |
3130 | && r->address < syms[i]->value + opd->vma) |
3131 | ++r; | |
90e3cdf2 | 3132 | |
595da8c5 | 3133 | if (r == opd->relocation + relcount) |
699733f6 AM |
3134 | break; |
3135 | ||
3136 | if (r->address != syms[i]->value + opd->vma) | |
3137 | continue; | |
3138 | ||
3139 | if (r->howto->type != R_PPC64_ADDR64) | |
3140 | continue; | |
90e3cdf2 | 3141 | |
699733f6 AM |
3142 | sym = *r->sym_ptr_ptr; |
3143 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3144 | sym->section->id, sym->value + r->addend)) | |
3145 | { | |
3146 | size_t len; | |
3147 | ||
3148 | *s = *syms[i]; | |
6ba2a415 | 3149 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3150 | s->section = sym->section; |
3151 | s->value = sym->value + r->addend; | |
3152 | s->name = names; | |
3153 | *names++ = '.'; | |
3154 | len = strlen (syms[i]->name); | |
3155 | memcpy (names, syms[i]->name, len + 1); | |
3156 | names += len + 1; | |
6f610d07 UW |
3157 | /* Have udata.p point back to the original symbol this |
3158 | synthetic symbol was derived from. */ | |
3159 | s->udata.p = syms[i]; | |
699733f6 AM |
3160 | s++; |
3161 | } | |
3162 | } | |
3163 | } | |
3164 | else | |
90e3cdf2 | 3165 | { |
468392fb | 3166 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3167 | bfd_byte *contents; |
3168 | size_t size; | |
468392fb AM |
3169 | long plt_count = 0; |
3170 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3171 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3172 | arelent *p; | |
90e3cdf2 | 3173 | |
699733f6 AM |
3174 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3175 | { | |
3176 | if (contents) | |
c9727e01 AM |
3177 | { |
3178 | free_contents_and_exit: | |
3179 | free (contents); | |
3180 | } | |
7356fed5 | 3181 | count = -1; |
c9727e01 | 3182 | goto done; |
699733f6 | 3183 | } |
90e3cdf2 | 3184 | |
699733f6 AM |
3185 | size = 0; |
3186 | for (i = secsymend; i < opdsymend; ++i) | |
3187 | { | |
3188 | bfd_vma ent; | |
90e3cdf2 | 3189 | |
5ef11c02 AM |
3190 | /* Ignore bogus symbols. */ |
3191 | if (syms[i]->value > opd->size - 8) | |
3192 | continue; | |
3193 | ||
699733f6 AM |
3194 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3195 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3196 | { | |
3197 | ++count; | |
3198 | size += sizeof (asymbol); | |
3199 | size += strlen (syms[i]->name) + 2; | |
3200 | } | |
3201 | } | |
90e3cdf2 | 3202 | |
468392fb | 3203 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3204 | if (dyn_count != 0 |
3205 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3206 | { |
3207 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3208 | size_t extdynsize; | |
3209 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3210 | ||
3211 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3212 | goto free_contents_and_exit; | |
3213 | ||
3214 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3215 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3216 | ||
3217 | extdyn = dynbuf; | |
3218 | extdynend = extdyn + dynamic->size; | |
3219 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3220 | { | |
3221 | Elf_Internal_Dyn dyn; | |
3222 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3223 | ||
3224 | if (dyn.d_tag == DT_NULL) | |
3225 | break; | |
3226 | ||
3227 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3228 | { | |
3229 | /* The first glink stub starts at offset 32; see comment in | |
3230 | ppc64_elf_finish_dynamic_sections. */ | |
3231 | glink_vma = dyn.d_un.d_val + 32; | |
3232 | /* The .glink section usually does not survive the final | |
3233 | link; search for the section (usually .text) where the | |
3234 | glink stubs now reside. */ | |
3235 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3236 | &glink_vma); | |
3237 | break; | |
3238 | } | |
3239 | } | |
3240 | ||
3241 | free (dynbuf); | |
3242 | } | |
3243 | ||
3244 | if (glink != NULL) | |
3245 | { | |
3246 | /* Determine __glink trampoline by reading the relative branch | |
3247 | from the first glink stub. */ | |
3248 | bfd_byte buf[4]; | |
3249 | if (bfd_get_section_contents (abfd, glink, buf, | |
3250 | glink_vma + 4 - glink->vma, 4)) | |
3251 | { | |
3252 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3253 | insn ^= B_DOT; | |
3254 | if ((insn & ~0x3fffffc) == 0) | |
3255 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3256 | } | |
3257 | ||
3258 | if (resolv_vma) | |
3259 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3260 | |
066ee829 AM |
3261 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3262 | if (relplt != NULL) | |
3263 | { | |
3264 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3265 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3266 | goto free_contents_and_exit; | |
68ffbac6 | 3267 | |
066ee829 AM |
3268 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3269 | size += plt_count * sizeof (asymbol); | |
468392fb | 3270 | |
066ee829 AM |
3271 | p = relplt->relocation; |
3272 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3273 | { |
3274 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3275 | if (p->addend != 0) | |
3276 | size += sizeof ("+0x") - 1 + 16; | |
3277 | } | |
066ee829 | 3278 | } |
468392fb AM |
3279 | } |
3280 | ||
699733f6 AM |
3281 | s = *ret = bfd_malloc (size); |
3282 | if (s == NULL) | |
7356fed5 | 3283 | goto free_contents_and_exit; |
90e3cdf2 | 3284 | |
468392fb | 3285 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3286 | |
699733f6 | 3287 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3288 | { |
699733f6 | 3289 | bfd_vma ent; |
90e3cdf2 | 3290 | |
5ef11c02 AM |
3291 | if (syms[i]->value > opd->size - 8) |
3292 | continue; | |
3293 | ||
699733f6 AM |
3294 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3295 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3296 | { |
c9727e01 | 3297 | long lo, hi; |
699733f6 | 3298 | size_t len; |
c9727e01 | 3299 | asection *sec = abfd->sections; |
90e3cdf2 | 3300 | |
699733f6 AM |
3301 | *s = *syms[i]; |
3302 | lo = codesecsym; | |
3303 | hi = codesecsymend; | |
3304 | while (lo < hi) | |
3305 | { | |
c9727e01 | 3306 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3307 | if (syms[mid]->section->vma < ent) |
3308 | lo = mid + 1; | |
3309 | else if (syms[mid]->section->vma > ent) | |
3310 | hi = mid; | |
3311 | else | |
c9727e01 AM |
3312 | { |
3313 | sec = syms[mid]->section; | |
3314 | break; | |
3315 | } | |
699733f6 AM |
3316 | } |
3317 | ||
c9727e01 | 3318 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3319 | sec = syms[lo - 1]->section; |
699733f6 AM |
3320 | |
3321 | for (; sec != NULL; sec = sec->next) | |
3322 | { | |
3323 | if (sec->vma > ent) | |
3324 | break; | |
63524580 JK |
3325 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3326 | info file. */ | |
3327 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3328 | break; |
3329 | if ((sec->flags & SEC_CODE) != 0) | |
3330 | s->section = sec; | |
3331 | } | |
6ba2a415 | 3332 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3333 | s->value = ent - s->section->vma; |
3334 | s->name = names; | |
3335 | *names++ = '.'; | |
3336 | len = strlen (syms[i]->name); | |
3337 | memcpy (names, syms[i]->name, len + 1); | |
3338 | names += len + 1; | |
6f610d07 UW |
3339 | /* Have udata.p point back to the original symbol this |
3340 | synthetic symbol was derived from. */ | |
3341 | s->udata.p = syms[i]; | |
699733f6 | 3342 | s++; |
90e3cdf2 | 3343 | } |
90e3cdf2 | 3344 | } |
699733f6 | 3345 | free (contents); |
468392fb AM |
3346 | |
3347 | if (glink != NULL && relplt != NULL) | |
3348 | { | |
3349 | if (resolv_vma) | |
3350 | { | |
3351 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3352 | memset (s, 0, sizeof *s); |
468392fb | 3353 | s->the_bfd = abfd; |
6ba2a415 | 3354 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3355 | s->section = glink; |
3356 | s->value = resolv_vma - glink->vma; | |
3357 | s->name = names; | |
3358 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3359 | names += sizeof ("__glink_PLTresolve"); | |
3360 | s++; | |
3361 | count++; | |
3362 | } | |
3363 | ||
3364 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3365 | stub rather than on the glink branch table entry. The | |
3366 | objdump disassembler would then use a sensible symbol | |
3367 | name on plt calls. The difficulty in doing so is | |
3368 | a) finding the stubs, and, | |
3369 | b) matching stubs against plt entries, and, | |
3370 | c) there can be multiple stubs for a given plt entry. | |
3371 | ||
3372 | Solving (a) could be done by code scanning, but older | |
3373 | ppc64 binaries used different stubs to current code. | |
3374 | (b) is the tricky one since you need to known the toc | |
3375 | pointer for at least one function that uses a pic stub to | |
3376 | be able to calculate the plt address referenced. | |
3377 | (c) means gdb would need to set multiple breakpoints (or | |
3378 | find the glink branch itself) when setting breakpoints | |
3379 | for pending shared library loads. */ | |
3380 | p = relplt->relocation; | |
3381 | for (i = 0; i < plt_count; i++, p++) | |
3382 | { | |
3383 | size_t len; | |
3384 | ||
3385 | *s = **p->sym_ptr_ptr; | |
3386 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3387 | we are defining a symbol, ensure one of them is set. */ | |
3388 | if ((s->flags & BSF_LOCAL) == 0) | |
3389 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3390 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3391 | s->section = glink; |
3392 | s->value = glink_vma - glink->vma; | |
3393 | s->name = names; | |
3394 | s->udata.p = NULL; | |
3395 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3396 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3397 | names += len; | |
e054468f AM |
3398 | if (p->addend != 0) |
3399 | { | |
3400 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3401 | names += sizeof ("+0x") - 1; | |
3402 | bfd_sprintf_vma (abfd, names, p->addend); | |
3403 | names += strlen (names); | |
3404 | } | |
468392fb AM |
3405 | memcpy (names, "@plt", sizeof ("@plt")); |
3406 | names += sizeof ("@plt"); | |
3407 | s++; | |
3408 | glink_vma += 8; | |
3409 | if (i >= 0x8000) | |
3410 | glink_vma += 4; | |
3411 | } | |
3412 | count += plt_count; | |
3413 | } | |
90e3cdf2 JJ |
3414 | } |
3415 | ||
c9727e01 | 3416 | done: |
a7535cf3 | 3417 | free (syms); |
90e3cdf2 JJ |
3418 | return count; |
3419 | } | |
5bd4f169 | 3420 | \f |
65f38f15 AM |
3421 | /* The following functions are specific to the ELF linker, while |
3422 | functions above are used generally. Those named ppc64_elf_* are | |
3423 | called by the main ELF linker code. They appear in this file more | |
3424 | or less in the order in which they are called. eg. | |
3425 | ppc64_elf_check_relocs is called early in the link process, | |
3426 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3427 | called. |
3428 | ||
3429 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3430 | functions have both a function code symbol and a function descriptor | |
3431 | symbol. A call to foo in a relocatable object file looks like: | |
3432 | ||
3433 | . .text | |
3434 | . x: | |
3435 | . bl .foo | |
3436 | . nop | |
3437 | ||
3438 | The function definition in another object file might be: | |
3439 | ||
3440 | . .section .opd | |
3441 | . foo: .quad .foo | |
3442 | . .quad .TOC.@tocbase | |
3443 | . .quad 0 | |
3444 | . | |
3445 | . .text | |
3446 | . .foo: blr | |
3447 | ||
3448 | When the linker resolves the call during a static link, the branch | |
3449 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3450 | If the function definition is in a shared library, things are a little | |
3451 | different: The call goes via a plt call stub, the opd information gets | |
3452 | copied to the plt, and the linker patches the nop. | |
3453 | ||
3454 | . x: | |
3455 | . bl .foo_stub | |
3456 | . ld 2,40(1) | |
3457 | . | |
3458 | . | |
3459 | . .foo_stub: | |
3460 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3461 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3462 | . std 2,40(1) # this is the general idea |
3463 | . ld 11,0(12) | |
3464 | . ld 2,8(12) | |
3465 | . mtctr 11 | |
3466 | . ld 11,16(12) | |
3467 | . bctr | |
3468 | . | |
3469 | . .section .plt | |
3470 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3471 | ||
3472 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3473 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3474 | copying. | |
3475 | ||
3476 | What are the difficulties here? Well, firstly, the relocations | |
3477 | examined by the linker in check_relocs are against the function code | |
3478 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3479 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3480 | to carefully copy dynamic link information from one symbol to the other. | |
3481 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3482 | symbol as is normal for most other backends. We need foo dynamic | |
3483 | instead, at least for an application final link. However, when | |
3484 | creating a shared library containing foo, we need to have both symbols | |
3485 | dynamic so that references to .foo are satisfied during the early | |
3486 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3487 | definition from some other object, eg. a static library. |
3488 | ||
3489 | Update: As of August 2004, we support a new convention. Function | |
3490 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3491 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3492 | |
1d483afe | 3493 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3494 | selects those that must be copied when linking a shared library, |
3495 | even when the symbol is local. */ | |
65f38f15 | 3496 | |
1d483afe AM |
3497 | static int |
3498 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3499 | enum elf_ppc64_reloc_type r_type) | |
3500 | { | |
3501 | switch (r_type) | |
3502 | { | |
3503 | default: | |
3504 | return 1; | |
3505 | ||
3506 | case R_PPC64_REL32: | |
3507 | case R_PPC64_REL64: | |
3508 | case R_PPC64_REL30: | |
3509 | return 0; | |
3510 | ||
3511 | case R_PPC64_TPREL16: | |
3512 | case R_PPC64_TPREL16_LO: | |
3513 | case R_PPC64_TPREL16_HI: | |
3514 | case R_PPC64_TPREL16_HA: | |
3515 | case R_PPC64_TPREL16_DS: | |
3516 | case R_PPC64_TPREL16_LO_DS: | |
3517 | case R_PPC64_TPREL16_HIGHER: | |
3518 | case R_PPC64_TPREL16_HIGHERA: | |
3519 | case R_PPC64_TPREL16_HIGHEST: | |
3520 | case R_PPC64_TPREL16_HIGHESTA: | |
3521 | case R_PPC64_TPREL64: | |
3522 | return !info->executable; | |
3523 | } | |
3524 | } | |
65f38f15 | 3525 | |
f4656909 AM |
3526 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3527 | copying dynamic variables from a shared lib into an app's dynbss | |
3528 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3529 | shared lib. With code that gcc generates, it's vital that this be |
3530 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3531 | the address of a function descriptor, which resides in the .opd | |
3532 | section. gcc uses the descriptor directly rather than going via the | |
3533 | GOT as some other ABI's do, which means that initialized function | |
3534 | pointers must reference the descriptor. Thus, a function pointer | |
3535 | initialized to the address of a function in a shared library will | |
3536 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3537 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3538 | presents a problem as a plt entry for that function is also |
3539 | initialized from the function descriptor symbol and the copy reloc | |
3540 | may not be initialized first. */ | |
a23b6845 | 3541 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3542 | |
721956f4 | 3543 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3544 | string. */ |
3545 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3546 | |
3547 | /* Linker stubs. | |
3548 | ppc_stub_long_branch: | |
3549 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3550 | destination, but a 24 bit branch in a stub section will reach. | |
3551 | . b dest | |
3552 | ||
3553 | ppc_stub_plt_branch: | |
3554 | Similar to the above, but a 24 bit branch in the stub section won't | |
3555 | reach its destination. | |
87e226ce AM |
3556 | . addis %r12,%r2,xxx@toc@ha |
3557 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3558 | . mtctr %r11 |
3559 | . bctr | |
3560 | ||
3561 | ppc_stub_plt_call: | |
2c66dc6c AM |
3562 | Used to call a function in a shared library. If it so happens that |
3563 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3564 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3565 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3566 | . std %r2,40(%r1) |
87e226ce | 3567 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3568 | . mtctr %r11 |
ac2df442 | 3569 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3570 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3571 | . bctr |
ad8e1ba5 AM |
3572 | |
3573 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3574 | code to adjust the value and save r2 to support multiple toc sections. | |
3575 | A ppc_stub_long_branch with an r2 offset looks like: | |
3576 | . std %r2,40(%r1) | |
3577 | . addis %r2,%r2,off@ha | |
3578 | . addi %r2,%r2,off@l | |
3579 | . b dest | |
3580 | ||
3581 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3582 | . std %r2,40(%r1) | |
3583 | . addis %r12,%r2,xxx@toc@ha | |
3584 | . ld %r11,xxx@toc@l(%r12) | |
3585 | . addis %r2,%r2,off@ha | |
3586 | . addi %r2,%r2,off@l | |
3587 | . mtctr %r11 | |
3588 | . bctr | |
ac2df442 AM |
3589 | |
3590 | In cases where the "addis" instruction would add zero, the "addis" is | |
3591 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3592 | */ |
3593 | ||
3594 | enum ppc_stub_type { | |
3595 | ppc_stub_none, | |
3596 | ppc_stub_long_branch, | |
ad8e1ba5 | 3597 | ppc_stub_long_branch_r2off, |
721956f4 | 3598 | ppc_stub_plt_branch, |
ad8e1ba5 | 3599 | ppc_stub_plt_branch_r2off, |
794e51c0 AM |
3600 | ppc_stub_plt_call, |
3601 | ppc_stub_plt_call_r2save | |
721956f4 AM |
3602 | }; |
3603 | ||
3604 | struct ppc_stub_hash_entry { | |
3605 | ||
3606 | /* Base hash table entry structure. */ | |
3607 | struct bfd_hash_entry root; | |
3608 | ||
ad8e1ba5 AM |
3609 | enum ppc_stub_type stub_type; |
3610 | ||
721956f4 AM |
3611 | /* The stub section. */ |
3612 | asection *stub_sec; | |
3613 | ||
3614 | /* Offset within stub_sec of the beginning of this stub. */ | |
3615 | bfd_vma stub_offset; | |
3616 | ||
3617 | /* Given the symbol's value and its section we can determine its final | |
3618 | value when building the stubs (so the stub knows where to jump. */ | |
3619 | bfd_vma target_value; | |
3620 | asection *target_section; | |
3621 | ||
721956f4 AM |
3622 | /* The symbol table entry, if any, that this was derived from. */ |
3623 | struct ppc_link_hash_entry *h; | |
e054468f | 3624 | struct plt_entry *plt_ent; |
721956f4 AM |
3625 | |
3626 | /* Where this stub is being called from, or, in the case of combined | |
3627 | stub sections, the first input section in the group. */ | |
3628 | asection *id_sec; | |
3629 | }; | |
3630 | ||
3631 | struct ppc_branch_hash_entry { | |
3632 | ||
3633 | /* Base hash table entry structure. */ | |
3634 | struct bfd_hash_entry root; | |
3635 | ||
c456f082 | 3636 | /* Offset within branch lookup table. */ |
721956f4 AM |
3637 | unsigned int offset; |
3638 | ||
3639 | /* Generation marker. */ | |
3640 | unsigned int iter; | |
3641 | }; | |
65f38f15 | 3642 | |
19e08130 AM |
3643 | /* Used to track dynamic relocations for local symbols. */ |
3644 | struct ppc_dyn_relocs | |
3645 | { | |
3646 | struct ppc_dyn_relocs *next; | |
3647 | ||
3648 | /* The input section of the reloc. */ | |
3649 | asection *sec; | |
3650 | ||
3651 | /* Total number of relocs copied for the input section. */ | |
3652 | unsigned int count : 31; | |
3653 | ||
3654 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3655 | unsigned int ifunc : 1; | |
3656 | }; | |
3657 | ||
65f38f15 AM |
3658 | struct ppc_link_hash_entry |
3659 | { | |
3660 | struct elf_link_hash_entry elf; | |
3661 | ||
b3fac117 AM |
3662 | union { |
3663 | /* A pointer to the most recently used stub hash entry against this | |
3664 | symbol. */ | |
3665 | struct ppc_stub_hash_entry *stub_cache; | |
3666 | ||
3667 | /* A pointer to the next symbol starting with a '.' */ | |
3668 | struct ppc_link_hash_entry *next_dot_sym; | |
3669 | } u; | |
721956f4 | 3670 | |
65f38f15 | 3671 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3672 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3673 | |
721956f4 | 3674 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3675 | struct ppc_link_hash_entry *oh; |
721956f4 | 3676 | |
e86ce104 AM |
3677 | /* Flag function code and descriptor symbols. */ |
3678 | unsigned int is_func:1; | |
3679 | unsigned int is_func_descriptor:1; | |
908b32fc | 3680 | unsigned int fake:1; |
411e1bfb | 3681 | |
c5614fa4 AM |
3682 | /* Whether global opd/toc sym has been adjusted or not. |
3683 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3684 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3685 | unsigned int adjust_done:1; |
3686 | ||
99877b66 AM |
3687 | /* Set if we twiddled this symbol to weak at some stage. */ |
3688 | unsigned int was_undefined:1; | |
3689 | ||
411e1bfb | 3690 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3691 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3692 | corresponding relocs are encountered during check_relocs. | |
3693 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3694 | indicate the corresponding GOT entry type is not needed. | |
3695 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3696 | a TPREL one. We use a separate flag rather than setting TPREL | |
3697 | just for convenience in distinguishing the two cases. */ | |
3698 | #define TLS_GD 1 /* GD reloc. */ | |
3699 | #define TLS_LD 2 /* LD reloc. */ | |
3700 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3701 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3702 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3703 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3704 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3705 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3706 | unsigned char tls_mask; |
65f38f15 AM |
3707 | }; |
3708 | ||
3709 | /* ppc64 ELF linker hash table. */ | |
3710 | ||
3711 | struct ppc_link_hash_table | |
3712 | { | |
3713 | struct elf_link_hash_table elf; | |
3714 | ||
721956f4 AM |
3715 | /* The stub hash table. */ |
3716 | struct bfd_hash_table stub_hash_table; | |
3717 | ||
3718 | /* Another hash table for plt_branch stubs. */ | |
3719 | struct bfd_hash_table branch_hash_table; | |
3720 | ||
3b421ab3 AM |
3721 | /* Hash table for function prologue tocsave. */ |
3722 | htab_t tocsave_htab; | |
3723 | ||
721956f4 AM |
3724 | /* Linker stub bfd. */ |
3725 | bfd *stub_bfd; | |
3726 | ||
3727 | /* Linker call-backs. */ | |
4ce794b7 AM |
3728 | asection * (*add_stub_section) (const char *, asection *); |
3729 | void (*layout_sections_again) (void); | |
721956f4 AM |
3730 | |
3731 | /* Array to keep track of which stub sections have been created, and | |
3732 | information on stub grouping. */ | |
3733 | struct map_stub { | |
3734 | /* This is the section to which stubs in the group will be attached. */ | |
3735 | asection *link_sec; | |
3736 | /* The stub section. */ | |
3737 | asection *stub_sec; | |
ad8e1ba5 AM |
3738 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3739 | bfd_vma toc_off; | |
721956f4 AM |
3740 | } *stub_group; |
3741 | ||
ad8e1ba5 AM |
3742 | /* Temp used when calculating TOC pointers. */ |
3743 | bfd_vma toc_curr; | |
bf102f86 AM |
3744 | bfd *toc_bfd; |
3745 | asection *toc_first_sec; | |
ad8e1ba5 | 3746 | |
8f3bab57 AM |
3747 | /* Highest input section id. */ |
3748 | int top_id; | |
3749 | ||
734b6cf9 AM |
3750 | /* Highest output section index. */ |
3751 | int top_index; | |
3752 | ||
b3fac117 AM |
3753 | /* Used when adding symbols. */ |
3754 | struct ppc_link_hash_entry *dot_syms; | |
3755 | ||
734b6cf9 AM |
3756 | /* List of input sections for each output section. */ |
3757 | asection **input_list; | |
721956f4 | 3758 | |
65f38f15 | 3759 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3760 | asection *got; |
4ce794b7 AM |
3761 | asection *plt; |
3762 | asection *relplt; | |
e054468f AM |
3763 | asection *iplt; |
3764 | asection *reliplt; | |
4ce794b7 AM |
3765 | asection *dynbss; |
3766 | asection *relbss; | |
3767 | asection *glink; | |
82bd7b59 | 3768 | asection *sfpr; |
4ce794b7 AM |
3769 | asection *brlt; |
3770 | asection *relbrlt; | |
58d180e8 | 3771 | asection *glink_eh_frame; |
ec338859 | 3772 | |
8387904d AM |
3773 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3774 | struct ppc_link_hash_entry *tls_get_addr; | |
3775 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3776 | |
927be08e AM |
3777 | /* The size of reliplt used by got entry relocs. */ |
3778 | bfd_size_type got_reli_size; | |
3779 | ||
9b5ecbd0 | 3780 | /* Statistics. */ |
794e51c0 | 3781 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
9b5ecbd0 | 3782 | |
ee75fd95 AM |
3783 | /* Number of stubs against global syms. */ |
3784 | unsigned long stub_globals; | |
3785 | ||
794e51c0 AM |
3786 | /* Alignment of PLT call stubs. */ |
3787 | unsigned int plt_stub_align:4; | |
3788 | ||
9df0ef5f AM |
3789 | /* Set if PLT call stubs should load r11. */ |
3790 | unsigned int plt_static_chain:1; | |
3791 | ||
794e51c0 AM |
3792 | /* Set if PLT call stubs need a read-read barrier. */ |
3793 | unsigned int plt_thread_safe:1; | |
3794 | ||
ad8e1ba5 | 3795 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3796 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3797 | |
a7f2871e AM |
3798 | /* Set if __tls_get_addr optimization should not be done. */ |
3799 | unsigned int no_tls_get_addr_opt:1; | |
3800 | ||
4c52953f | 3801 | /* Support for multiple toc sections. */ |
33c0ec9d | 3802 | unsigned int do_multi_toc:1; |
4c52953f | 3803 | unsigned int multi_toc_needed:1; |
927be08e | 3804 | unsigned int second_toc_pass:1; |
67f0cbdb | 3805 | unsigned int do_toc_opt:1; |
4c52953f | 3806 | |
5d1634d7 | 3807 | /* Set on error. */ |
99877b66 | 3808 | unsigned int stub_error:1; |
721956f4 | 3809 | |
7d9616d7 | 3810 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3811 | unsigned int twiddled_syms:1; |
721956f4 AM |
3812 | |
3813 | /* Incremented every time we size stubs. */ | |
3814 | unsigned int stub_iteration; | |
5d1634d7 | 3815 | |
87d72d41 AM |
3816 | /* Small local sym cache. */ |
3817 | struct sym_cache sym_cache; | |
65f38f15 AM |
3818 | }; |
3819 | ||
4c52953f AM |
3820 | /* Rename some of the generic section flags to better document how they |
3821 | are used here. */ | |
b0dddeec AM |
3822 | |
3823 | /* Nonzero if this section has TLS related relocations. */ | |
3824 | #define has_tls_reloc sec_flg0 | |
3825 | ||
3826 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3827 | #define has_tls_get_addr_call sec_flg1 | |
3828 | ||
3829 | /* Nonzero if this section has any toc or got relocs. */ | |
3830 | #define has_toc_reloc sec_flg2 | |
3831 | ||
3832 | /* Nonzero if this section has a call to another section that uses | |
3833 | the toc or got. */ | |
d77c8a4b | 3834 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3835 | |
3836 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3837 | #define call_check_in_progress sec_flg4 |
70cc837d | 3838 | #define call_check_done sec_flg5 |
4c52953f | 3839 | |
65f38f15 AM |
3840 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3841 | ||
3842 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3843 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3844 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3845 | |
721956f4 AM |
3846 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3847 | ((struct ppc_stub_hash_entry *) \ | |
3848 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3849 | ||
3850 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3851 | ((struct ppc_branch_hash_entry *) \ | |
3852 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3853 | ||
3854 | /* Create an entry in the stub hash table. */ | |
3855 | ||
3856 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3857 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3858 | struct bfd_hash_table *table, | |
3859 | const char *string) | |
721956f4 AM |
3860 | { |
3861 | /* Allocate the structure if it has not already been allocated by a | |
3862 | subclass. */ | |
3863 | if (entry == NULL) | |
3864 | { | |
3865 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3866 | if (entry == NULL) | |
3867 | return entry; | |
3868 | } | |
3869 | ||
3870 | /* Call the allocation method of the superclass. */ | |
3871 | entry = bfd_hash_newfunc (entry, table, string); | |
3872 | if (entry != NULL) | |
3873 | { | |
3874 | struct ppc_stub_hash_entry *eh; | |
3875 | ||
3876 | /* Initialize the local fields. */ | |
3877 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3878 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3879 | eh->stub_sec = NULL; |
3880 | eh->stub_offset = 0; | |
3881 | eh->target_value = 0; | |
3882 | eh->target_section = NULL; | |
721956f4 AM |
3883 | eh->h = NULL; |
3884 | eh->id_sec = NULL; | |
3885 | } | |
3886 | ||
3887 | return entry; | |
3888 | } | |
3889 | ||
3890 | /* Create an entry in the branch hash table. */ | |
3891 | ||
3892 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3893 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3894 | struct bfd_hash_table *table, | |
3895 | const char *string) | |
721956f4 AM |
3896 | { |
3897 | /* Allocate the structure if it has not already been allocated by a | |
3898 | subclass. */ | |
3899 | if (entry == NULL) | |
3900 | { | |
3901 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3902 | if (entry == NULL) | |
3903 | return entry; | |
3904 | } | |
3905 | ||
3906 | /* Call the allocation method of the superclass. */ | |
3907 | entry = bfd_hash_newfunc (entry, table, string); | |
3908 | if (entry != NULL) | |
3909 | { | |
3910 | struct ppc_branch_hash_entry *eh; | |
3911 | ||
3912 | /* Initialize the local fields. */ | |
3913 | eh = (struct ppc_branch_hash_entry *) entry; | |
3914 | eh->offset = 0; | |
3915 | eh->iter = 0; | |
3916 | } | |
3917 | ||
3918 | return entry; | |
3919 | } | |
3920 | ||
65f38f15 AM |
3921 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3922 | ||
3923 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3924 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3925 | struct bfd_hash_table *table, | |
3926 | const char *string) | |
65f38f15 AM |
3927 | { |
3928 | /* Allocate the structure if it has not already been allocated by a | |
3929 | subclass. */ | |
3930 | if (entry == NULL) | |
3931 | { | |
3932 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3933 | if (entry == NULL) | |
3934 | return entry; | |
3935 | } | |
3936 | ||
3937 | /* Call the allocation method of the superclass. */ | |
3938 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3939 | if (entry != NULL) | |
3940 | { | |
3941 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3942 | ||
b3fac117 | 3943 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3944 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3945 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3946 | ||
3947 | /* When making function calls, old ABI code references function entry | |
3948 | points (dot symbols), while new ABI code references the function | |
3949 | descriptor symbol. We need to make any combination of reference and | |
3950 | definition work together, without breaking archive linking. | |
3951 | ||
3952 | For a defined function "foo" and an undefined call to "bar": | |
3953 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3954 | "bar" too). | |
3955 | A new object defines "foo" and references "bar". | |
3956 | ||
3957 | A new object thus has no problem with its undefined symbols being | |
3958 | satisfied by definitions in an old object. On the other hand, the | |
3959 | old object won't have ".bar" satisfied by a new object. | |
3960 | ||
3961 | Keep a list of newly added dot-symbols. */ | |
3962 | ||
3963 | if (string[0] == '.') | |
3964 | { | |
3965 | struct ppc_link_hash_table *htab; | |
3966 | ||
3967 | htab = (struct ppc_link_hash_table *) table; | |
3968 | eh->u.next_dot_sym = htab->dot_syms; | |
3969 | htab->dot_syms = eh; | |
3970 | } | |
65f38f15 AM |
3971 | } |
3972 | ||
3973 | return entry; | |
3974 | } | |
3975 | ||
3b421ab3 AM |
3976 | struct tocsave_entry { |
3977 | asection *sec; | |
3978 | bfd_vma offset; | |
3979 | }; | |
3980 | ||
3981 | static hashval_t | |
3982 | tocsave_htab_hash (const void *p) | |
3983 | { | |
3984 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
3985 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
3986 | } | |
3987 | ||
3988 | static int | |
3989 | tocsave_htab_eq (const void *p1, const void *p2) | |
3990 | { | |
3991 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3992 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3993 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3994 | } | |
3995 | ||
65f38f15 AM |
3996 | /* Create a ppc64 ELF linker hash table. */ |
3997 | ||
3998 | static struct bfd_link_hash_table * | |
4ce794b7 | 3999 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4000 | { |
4001 | struct ppc_link_hash_table *htab; | |
4002 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4003 | ||
4ce794b7 | 4004 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4005 | if (htab == NULL) |
4006 | return NULL; | |
4007 | ||
66eb6687 | 4008 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4009 | sizeof (struct ppc_link_hash_entry), |
4010 | PPC64_ELF_DATA)) | |
65f38f15 | 4011 | { |
e2d34d7d | 4012 | free (htab); |
65f38f15 AM |
4013 | return NULL; |
4014 | } | |
4015 | ||
721956f4 | 4016 | /* Init the stub hash table too. */ |
66eb6687 AM |
4017 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4018 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
4019 | return NULL; |
4020 | ||
4021 | /* And the branch hash table. */ | |
66eb6687 AM |
4022 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4023 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
4024 | return NULL; |
4025 | ||
3b421ab3 AM |
4026 | htab->tocsave_htab = htab_try_create (1024, |
4027 | tocsave_htab_hash, | |
4028 | tocsave_htab_eq, | |
4029 | NULL); | |
4030 | if (htab->tocsave_htab == NULL) | |
4031 | return NULL; | |
4032 | ||
3254fd24 AM |
4033 | /* Initializing two fields of the union is just cosmetic. We really |
4034 | only care about glist, but when compiled on a 32-bit host the | |
4035 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4036 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4037 | htab->elf.init_got_refcount.refcount = 0; |
4038 | htab->elf.init_got_refcount.glist = NULL; | |
4039 | htab->elf.init_plt_refcount.refcount = 0; | |
4040 | htab->elf.init_plt_refcount.glist = NULL; | |
4041 | htab->elf.init_got_offset.offset = 0; | |
4042 | htab->elf.init_got_offset.glist = NULL; | |
4043 | htab->elf.init_plt_offset.offset = 0; | |
4044 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4045 | |
65f38f15 AM |
4046 | return &htab->elf.root; |
4047 | } | |
4048 | ||
721956f4 AM |
4049 | /* Free the derived linker hash table. */ |
4050 | ||
4051 | static void | |
4ce794b7 | 4052 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4053 | { |
3b421ab3 | 4054 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4055 | |
3b421ab3 AM |
4056 | bfd_hash_table_free (&htab->stub_hash_table); |
4057 | bfd_hash_table_free (&htab->branch_hash_table); | |
4058 | if (htab->tocsave_htab) | |
4059 | htab_delete (htab->tocsave_htab); | |
9f7c3e5e | 4060 | _bfd_elf_link_hash_table_free (hash); |
721956f4 AM |
4061 | } |
4062 | ||
bfeb4a28 AM |
4063 | /* Create sections for linker generated code. */ |
4064 | ||
4065 | static bfd_boolean | |
4066 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4067 | { | |
4068 | struct ppc_link_hash_table *htab; | |
4069 | flagword flags; | |
4070 | ||
4071 | htab = ppc_hash_table (info); | |
4072 | ||
4073 | /* Create .sfpr for code to save and restore fp regs. */ | |
4074 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4075 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4076 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4077 | flags); | |
4078 | if (htab->sfpr == NULL | |
4079 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4080 | return FALSE; | |
4081 | ||
4082 | /* Create .glink for lazy dynamic linking support. */ | |
4083 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4084 | flags); | |
4085 | if (htab->glink == NULL | |
4086 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4087 | return FALSE; | |
4088 | ||
4089 | if (!info->no_ld_generated_unwind_info) | |
4090 | { | |
4091 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4092 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4093 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4094 | ".eh_frame", | |
4095 | flags); | |
4096 | if (htab->glink_eh_frame == NULL | |
4097 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4098 | return FALSE; | |
4099 | } | |
4100 | ||
4101 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
4102 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4103 | if (htab->iplt == NULL | |
4104 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4105 | return FALSE; | |
4106 | ||
4107 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4108 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4109 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4110 | ".rela.iplt", | |
4111 | flags); | |
4112 | if (htab->reliplt == NULL | |
4113 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4114 | return FALSE; | |
4115 | ||
4116 | /* Create branch lookup table for plt_branch stubs. */ | |
4117 | flags = (SEC_ALLOC | SEC_LOAD | |
4118 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4119 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4120 | flags); | |
4121 | if (htab->brlt == NULL | |
4122 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4123 | return FALSE; | |
4124 | ||
4125 | if (!info->shared) | |
4126 | return TRUE; | |
4127 | ||
4128 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4129 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4130 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4131 | ".rela.branch_lt", | |
4132 | flags); | |
4133 | if (htab->relbrlt == NULL | |
4134 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4135 | return FALSE; | |
4136 | ||
4137 | return TRUE; | |
4138 | } | |
4139 | ||
e717da7e AM |
4140 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4141 | ||
bfeb4a28 | 4142 | bfd_boolean |
e717da7e AM |
4143 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) |
4144 | { | |
4145 | struct ppc_link_hash_table *htab; | |
4146 | ||
4147 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4148 | ||
4149 | /* Always hook our dynamic sections into the first bfd, which is the | |
4150 | linker created stub bfd. This ensures that the GOT header is at | |
4151 | the start of the output TOC section. */ | |
4152 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4153 | if (htab == NULL) |
bfeb4a28 | 4154 | return FALSE; |
e717da7e AM |
4155 | htab->stub_bfd = abfd; |
4156 | htab->elf.dynobj = abfd; | |
bfeb4a28 AM |
4157 | |
4158 | if (info->relocatable) | |
4159 | return TRUE; | |
4160 | ||
4161 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4162 | } |
4163 | ||
721956f4 AM |
4164 | /* Build a name for an entry in the stub hash table. */ |
4165 | ||
4166 | static char * | |
4ce794b7 AM |
4167 | ppc_stub_name (const asection *input_section, |
4168 | const asection *sym_sec, | |
4169 | const struct ppc_link_hash_entry *h, | |
4170 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4171 | { |
4172 | char *stub_name; | |
bcaa2f82 | 4173 | ssize_t len; |
721956f4 AM |
4174 | |
4175 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4176 | offsets from a sym as a branch target? In fact, we could | |
4177 | probably assume the addend is always zero. */ | |
4178 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4179 | ||
4180 | if (h) | |
4181 | { | |
4182 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4183 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4184 | if (stub_name == NULL) |
4185 | return stub_name; | |
4186 | ||
bcaa2f82 AM |
4187 | len = sprintf (stub_name, "%08x.%s+%x", |
4188 | input_section->id & 0xffffffff, | |
4189 | h->elf.root.root.string, | |
4190 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4191 | } |
4192 | else | |
4193 | { | |
ad8e1ba5 | 4194 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4195 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4196 | if (stub_name == NULL) |
4197 | return stub_name; | |
4198 | ||
bcaa2f82 AM |
4199 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4200 | input_section->id & 0xffffffff, | |
4201 | sym_sec->id & 0xffffffff, | |
4202 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4203 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4204 | } |
bcaa2f82 | 4205 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4206 | stub_name[len - 2] = 0; |
721956f4 AM |
4207 | return stub_name; |
4208 | } | |
4209 | ||
4210 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4211 | creating the stub name takes a bit of time. */ | |
4212 | ||
4213 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4214 | ppc_get_stub_entry (const asection *input_section, |
4215 | const asection *sym_sec, | |
039b3fef | 4216 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4217 | const Elf_Internal_Rela *rel, |
4218 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4219 | { |
4220 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4221 | const asection *id_sec; |
4222 | ||
4223 | /* If this input section is part of a group of sections sharing one | |
4224 | stub section, then use the id of the first section in the group. | |
4225 | Stub names need to include a section id, as there may well be | |
4226 | more than one stub used to reach say, printf, and we need to | |
4227 | distinguish between them. */ | |
4228 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4229 | ||
b3fac117 AM |
4230 | if (h != NULL && h->u.stub_cache != NULL |
4231 | && h->u.stub_cache->h == h | |
4232 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4233 | { |
b3fac117 | 4234 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4235 | } |
4236 | else | |
4237 | { | |
4238 | char *stub_name; | |
4239 | ||
4240 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4241 | if (stub_name == NULL) | |
4242 | return NULL; | |
4243 | ||
4244 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4245 | stub_name, FALSE, FALSE); |
721956f4 | 4246 | if (h != NULL) |
b3fac117 | 4247 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4248 | |
4249 | free (stub_name); | |
4250 | } | |
4251 | ||
4252 | return stub_entry; | |
4253 | } | |
4254 | ||
4255 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4256 | stub entry are initialised. */ | |
4257 | ||
4258 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4259 | ppc_add_stub (const char *stub_name, |
4260 | asection *section, | |
25f53a85 | 4261 | struct bfd_link_info *info) |
721956f4 | 4262 | { |
25f53a85 | 4263 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4264 | asection *link_sec; |
4265 | asection *stub_sec; | |
4266 | struct ppc_stub_hash_entry *stub_entry; | |
4267 | ||
4268 | link_sec = htab->stub_group[section->id].link_sec; | |
4269 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4270 | if (stub_sec == NULL) | |
4271 | { | |
4272 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4273 | if (stub_sec == NULL) | |
4274 | { | |
d4c88bbb | 4275 | size_t namelen; |
721956f4 AM |
4276 | bfd_size_type len; |
4277 | char *s_name; | |
4278 | ||
d4c88bbb AM |
4279 | namelen = strlen (link_sec->name); |
4280 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4281 | s_name = bfd_alloc (htab->stub_bfd, len); |
4282 | if (s_name == NULL) | |
4283 | return NULL; | |
4284 | ||
d4c88bbb AM |
4285 | memcpy (s_name, link_sec->name, namelen); |
4286 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4287 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4288 | if (stub_sec == NULL) | |
4289 | return NULL; | |
4290 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4291 | } | |
4292 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4293 | } | |
4294 | ||
4295 | /* Enter this entry into the linker stub hash table. */ | |
4296 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4297 | TRUE, FALSE); |
721956f4 AM |
4298 | if (stub_entry == NULL) |
4299 | { | |
8de848d8 | 4300 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4301 | section->owner, stub_name); |
721956f4 AM |
4302 | return NULL; |
4303 | } | |
4304 | ||
4305 | stub_entry->stub_sec = stub_sec; | |
4306 | stub_entry->stub_offset = 0; | |
4307 | stub_entry->id_sec = link_sec; | |
4308 | return stub_entry; | |
4309 | } | |
4310 | ||
e717da7e AM |
4311 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4312 | not already done. */ | |
65f38f15 | 4313 | |
b34976b6 | 4314 | static bfd_boolean |
e717da7e | 4315 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4316 | { |
e717da7e AM |
4317 | asection *got, *relgot; |
4318 | flagword flags; | |
4319 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4320 | |
0c8d6e5c | 4321 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4322 | return FALSE; |
4dfe6ac6 NC |
4323 | if (htab == NULL) |
4324 | return FALSE; | |
0ffa91dd | 4325 | |
4ce794b7 | 4326 | if (!htab->got) |
e717da7e AM |
4327 | { |
4328 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4329 | return FALSE; | |
4330 | ||
3d4d4302 | 4331 | htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got"); |
e717da7e AM |
4332 | if (!htab->got) |
4333 | abort (); | |
4334 | } | |
4335 | ||
4336 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4337 | | SEC_LINKER_CREATED); | |
4338 | ||
c456f082 | 4339 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4340 | if (!got |
e717da7e AM |
4341 | || !bfd_set_section_alignment (abfd, got, 3)) |
4342 | return FALSE; | |
65f38f15 | 4343 | |
c456f082 AM |
4344 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4345 | flags | SEC_READONLY); | |
e717da7e | 4346 | if (!relgot |
e717da7e | 4347 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4348 | return FALSE; |
e717da7e AM |
4349 | |
4350 | ppc64_elf_tdata (abfd)->got = got; | |
4351 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4352 | return TRUE; |
65f38f15 | 4353 | } |
5bd4f169 | 4354 | |
82bd7b59 | 4355 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4356 | |
b34976b6 | 4357 | static bfd_boolean |
4ce794b7 | 4358 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4359 | { |
65f38f15 | 4360 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4361 | |
65f38f15 | 4362 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4363 | return FALSE; |
65f38f15 | 4364 | |
e717da7e | 4365 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4366 | if (htab == NULL) |
4367 | return FALSE; | |
4368 | ||
e717da7e | 4369 | if (!htab->got) |
3d4d4302 AM |
4370 | htab->got = bfd_get_linker_section (dynobj, ".got"); |
4371 | htab->plt = bfd_get_linker_section (dynobj, ".plt"); | |
4372 | htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
4373 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
65f38f15 | 4374 | if (!info->shared) |
3d4d4302 | 4375 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4376 | |
e717da7e | 4377 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4378 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4379 | abort (); |
4380 | ||
b34976b6 | 4381 | return TRUE; |
5bd4f169 AM |
4382 | } |
4383 | ||
b31867b6 AM |
4384 | /* Follow indirect and warning symbol links. */ |
4385 | ||
4386 | static inline struct bfd_link_hash_entry * | |
4387 | follow_link (struct bfd_link_hash_entry *h) | |
4388 | { | |
4389 | while (h->type == bfd_link_hash_indirect | |
4390 | || h->type == bfd_link_hash_warning) | |
4391 | h = h->u.i.link; | |
4392 | return h; | |
4393 | } | |
4394 | ||
4395 | static inline struct elf_link_hash_entry * | |
4396 | elf_follow_link (struct elf_link_hash_entry *h) | |
4397 | { | |
4398 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4399 | } | |
4400 | ||
4401 | static inline struct ppc_link_hash_entry * | |
4402 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4403 | { | |
4404 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4405 | } | |
4406 | ||
40d16e0b AM |
4407 | /* Merge PLT info on FROM with that on TO. */ |
4408 | ||
4409 | static void | |
4410 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4411 | struct ppc_link_hash_entry *to) | |
4412 | { | |
4413 | if (from->elf.plt.plist != NULL) | |
4414 | { | |
4415 | if (to->elf.plt.plist != NULL) | |
4416 | { | |
4417 | struct plt_entry **entp; | |
4418 | struct plt_entry *ent; | |
4419 | ||
4420 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4421 | { | |
4422 | struct plt_entry *dent; | |
4423 | ||
4424 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4425 | if (dent->addend == ent->addend) | |
4426 | { | |
4427 | dent->plt.refcount += ent->plt.refcount; | |
4428 | *entp = ent->next; | |
4429 | break; | |
4430 | } | |
4431 | if (dent == NULL) | |
4432 | entp = &ent->next; | |
4433 | } | |
4434 | *entp = to->elf.plt.plist; | |
4435 | } | |
4436 | ||
4437 | to->elf.plt.plist = from->elf.plt.plist; | |
4438 | from->elf.plt.plist = NULL; | |
4439 | } | |
4440 | } | |
4441 | ||
65f38f15 AM |
4442 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4443 | ||
4444 | static void | |
fcfa13d2 AM |
4445 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4446 | struct elf_link_hash_entry *dir, | |
4447 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4448 | { |
4449 | struct ppc_link_hash_entry *edir, *eind; | |
4450 | ||
4451 | edir = (struct ppc_link_hash_entry *) dir; | |
4452 | eind = (struct ppc_link_hash_entry *) ind; | |
4453 | ||
c79d6685 AM |
4454 | edir->is_func |= eind->is_func; |
4455 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4456 | edir->tls_mask |= eind->tls_mask; | |
4457 | if (eind->oh != NULL) | |
4458 | edir->oh = ppc_follow_link (eind->oh); | |
4459 | ||
4460 | /* If called to transfer flags for a weakdef during processing | |
4461 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4462 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4463 | if (!(ELIMINATE_COPY_RELOCS | |
4464 | && eind->elf.root.type != bfd_link_hash_indirect | |
4465 | && edir->elf.dynamic_adjusted)) | |
4466 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4467 | ||
4468 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4469 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4470 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4471 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
4472 | ||
411e1bfb | 4473 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4474 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4475 | { |
bbd7ec4a AM |
4476 | if (edir->dyn_relocs != NULL) |
4477 | { | |
6061a67d AM |
4478 | struct elf_dyn_relocs **pp; |
4479 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4480 | |
fcfa13d2 | 4481 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4482 | list. Merge any entries against the same section. */ |
4483 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4484 | { | |
6061a67d | 4485 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4486 | |
4487 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4488 | if (q->sec == p->sec) | |
4489 | { | |
4490 | q->pc_count += p->pc_count; | |
4491 | q->count += p->count; | |
4492 | *pp = p->next; | |
4493 | break; | |
4494 | } | |
4495 | if (q == NULL) | |
4496 | pp = &p->next; | |
4497 | } | |
4498 | *pp = edir->dyn_relocs; | |
4499 | } | |
4500 | ||
65f38f15 AM |
4501 | edir->dyn_relocs = eind->dyn_relocs; |
4502 | eind->dyn_relocs = NULL; | |
4503 | } | |
65f38f15 | 4504 | |
68ba6d40 AM |
4505 | /* If we were called to copy over info for a weak sym, that's all. |
4506 | You might think dyn_relocs need not be copied over; After all, | |
4507 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4508 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4509 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4510 | dyn_relocs in read-only sections, and it does so on what is the | |
4511 | DIR sym here. */ | |
4512 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4513 | return; | |
4514 | ||
81848ca0 AM |
4515 | /* Copy over got entries that we may have already seen to the |
4516 | symbol which just became indirect. */ | |
411e1bfb AM |
4517 | if (eind->elf.got.glist != NULL) |
4518 | { | |
4519 | if (edir->elf.got.glist != NULL) | |
4520 | { | |
4521 | struct got_entry **entp; | |
4522 | struct got_entry *ent; | |
4523 | ||
4524 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4525 | { | |
4526 | struct got_entry *dent; | |
4527 | ||
4528 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4529 | if (dent->addend == ent->addend | |
e717da7e | 4530 | && dent->owner == ent->owner |
411e1bfb AM |
4531 | && dent->tls_type == ent->tls_type) |
4532 | { | |
4533 | dent->got.refcount += ent->got.refcount; | |
4534 | *entp = ent->next; | |
4535 | break; | |
4536 | } | |
4537 | if (dent == NULL) | |
4538 | entp = &ent->next; | |
4539 | } | |
4540 | *entp = edir->elf.got.glist; | |
4541 | } | |
4542 | ||
4543 | edir->elf.got.glist = eind->elf.got.glist; | |
4544 | eind->elf.got.glist = NULL; | |
4545 | } | |
4546 | ||
4547 | /* And plt entries. */ | |
40d16e0b | 4548 | move_plt_plist (eind, edir); |
411e1bfb | 4549 | |
fcfa13d2 | 4550 | if (eind->elf.dynindx != -1) |
411e1bfb | 4551 | { |
fcfa13d2 AM |
4552 | if (edir->elf.dynindx != -1) |
4553 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4554 | edir->elf.dynstr_index); | |
411e1bfb AM |
4555 | edir->elf.dynindx = eind->elf.dynindx; |
4556 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4557 | eind->elf.dynindx = -1; | |
4558 | eind->elf.dynstr_index = 0; | |
4559 | } | |
411e1bfb AM |
4560 | } |
4561 | ||
8387904d AM |
4562 | /* Find the function descriptor hash entry from the given function code |
4563 | hash entry FH. Link the entries via their OH fields. */ | |
4564 | ||
4565 | static struct ppc_link_hash_entry * | |
b31867b6 | 4566 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4567 | { |
4568 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4569 | ||
4570 | if (fdh == NULL) | |
4571 | { | |
4572 | const char *fd_name = fh->elf.root.root.string + 1; | |
4573 | ||
4574 | fdh = (struct ppc_link_hash_entry *) | |
4575 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4576 | if (fdh == NULL) |
4577 | return fdh; | |
4578 | ||
4579 | fdh->is_func_descriptor = 1; | |
4580 | fdh->oh = fh; | |
4581 | fh->is_func = 1; | |
4582 | fh->oh = fdh; | |
8387904d AM |
4583 | } |
4584 | ||
b31867b6 | 4585 | return ppc_follow_link (fdh); |
8387904d AM |
4586 | } |
4587 | ||
bb700d78 AM |
4588 | /* Make a fake function descriptor sym for the code sym FH. */ |
4589 | ||
4590 | static struct ppc_link_hash_entry * | |
4591 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4592 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4593 | { |
4594 | bfd *abfd; | |
4595 | asymbol *newsym; | |
4596 | struct bfd_link_hash_entry *bh; | |
4597 | struct ppc_link_hash_entry *fdh; | |
4598 | ||
4599 | abfd = fh->elf.root.u.undef.abfd; | |
4600 | newsym = bfd_make_empty_symbol (abfd); | |
4601 | newsym->name = fh->elf.root.root.string + 1; | |
4602 | newsym->section = bfd_und_section_ptr; | |
4603 | newsym->value = 0; | |
908b32fc | 4604 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4605 | |
4606 | bh = NULL; | |
4607 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4608 | newsym->flags, newsym->section, | |
4609 | newsym->value, NULL, FALSE, FALSE, | |
4610 | &bh)) | |
4611 | return NULL; | |
4612 | ||
4613 | fdh = (struct ppc_link_hash_entry *) bh; | |
4614 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4615 | fdh->fake = 1; |
4616 | fdh->is_func_descriptor = 1; | |
4617 | fdh->oh = fh; | |
4618 | fh->is_func = 1; | |
4619 | fh->oh = fdh; | |
bb700d78 AM |
4620 | return fdh; |
4621 | } | |
4622 | ||
8387904d AM |
4623 | /* Fix function descriptor symbols defined in .opd sections to be |
4624 | function type. */ | |
555cd476 AM |
4625 | |
4626 | static bfd_boolean | |
c16153ae | 4627 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4628 | struct bfd_link_info *info, |
555cd476 | 4629 | Elf_Internal_Sym *isym, |
b3fac117 | 4630 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4631 | flagword *flags ATTRIBUTE_UNUSED, |
4632 | asection **sec, | |
4633 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4634 | { | |
f64b2e8d NC |
4635 | if ((ibfd->flags & DYNAMIC) == 0 |
4636 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4637 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4638 | ||
e054468f | 4639 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4640 | { |
4641 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4642 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4643 | } |
e054468f AM |
4644 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4645 | ; | |
4646 | else if (*sec != NULL | |
70cc837d | 4647 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4648 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4649 | |
555cd476 AM |
4650 | return TRUE; |
4651 | } | |
4652 | ||
8387904d | 4653 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4654 | inclusion of a new ABI object archive that defines "bar". |
4655 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4656 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4657 | |
4658 | static struct elf_link_hash_entry * | |
4659 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4660 | struct bfd_link_info *info, | |
4661 | const char *name) | |
4662 | { | |
4663 | struct elf_link_hash_entry *h; | |
4664 | char *dot_name; | |
4665 | size_t len; | |
4666 | ||
4667 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4668 | if (h != NULL |
4669 | /* Don't return this sym if it is a fake function descriptor | |
4670 | created by add_symbol_adjust. */ | |
4671 | && !(h->root.type == bfd_link_hash_undefweak | |
4672 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4673 | return h; |
4674 | ||
4675 | if (name[0] == '.') | |
4676 | return h; | |
4677 | ||
4678 | len = strlen (name); | |
4679 | dot_name = bfd_alloc (abfd, len + 2); | |
4680 | if (dot_name == NULL) | |
4681 | return (struct elf_link_hash_entry *) 0 - 1; | |
4682 | dot_name[0] = '.'; | |
4683 | memcpy (dot_name + 1, name, len + 1); | |
4684 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4685 | bfd_release (abfd, dot_name); | |
4686 | return h; | |
4687 | } | |
4688 | ||
4689 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4690 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4691 | are made weak. This stops later archive searches from including an | |
4692 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4693 | prevents the linker complaining about undefined symbols. |
4694 | We also check and correct mismatched symbol visibility here. The | |
4695 | most restrictive visibility of the function descriptor and the | |
4696 | function entry symbol is used. */ | |
8387904d AM |
4697 | |
4698 | static bfd_boolean | |
b3fac117 | 4699 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4700 | { |
8387904d AM |
4701 | struct ppc_link_hash_table *htab; |
4702 | struct ppc_link_hash_entry *fdh; | |
4703 | ||
b3fac117 | 4704 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4705 | return TRUE; |
4706 | ||
b3fac117 AM |
4707 | if (eh->elf.root.type == bfd_link_hash_warning) |
4708 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4709 | |
b3fac117 AM |
4710 | if (eh->elf.root.root.string[0] != '.') |
4711 | abort (); | |
8387904d | 4712 | |
b3fac117 | 4713 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4714 | if (htab == NULL) |
4715 | return FALSE; | |
4716 | ||
b31867b6 AM |
4717 | fdh = lookup_fdh (eh, htab); |
4718 | if (fdh == NULL) | |
4719 | { | |
4720 | if (!info->relocatable | |
4721 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4722 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4723 | && eh->elf.ref_regular) | |
4724 | { | |
4725 | /* Make an undefweak function descriptor sym, which is enough to | |
4726 | pull in an --as-needed shared lib, but won't cause link | |
4727 | errors. Archives are handled elsewhere. */ | |
4728 | fdh = make_fdh (info, eh); | |
4729 | if (fdh == NULL) | |
4730 | return FALSE; | |
4731 | fdh->elf.ref_regular = 1; | |
4732 | } | |
bb700d78 | 4733 | } |
b31867b6 | 4734 | else |
8387904d | 4735 | { |
35b0ce59 AM |
4736 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4737 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4738 | if (entry_vis < descr_vis) | |
4739 | fdh->elf.other += entry_vis - descr_vis; | |
4740 | else if (entry_vis > descr_vis) | |
4741 | eh->elf.other += descr_vis - entry_vis; | |
4742 | ||
e87d886e AM |
4743 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4744 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4745 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4746 | { |
4747 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4748 | eh->was_undefined = 1; | |
4749 | htab->twiddled_syms = 1; | |
4750 | } | |
8387904d | 4751 | } |
99877b66 | 4752 | |
8387904d AM |
4753 | return TRUE; |
4754 | } | |
4755 | ||
b3fac117 AM |
4756 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4757 | ||
8387904d | 4758 | static bfd_boolean |
7d9616d7 | 4759 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4760 | { |
99877b66 | 4761 | struct ppc_link_hash_table *htab; |
b3fac117 | 4762 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4763 | |
0c8d6e5c | 4764 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4765 | return TRUE; |
4dfe6ac6 NC |
4766 | htab = ppc_hash_table (info); |
4767 | if (htab == NULL) | |
4768 | return FALSE; | |
35b0ce59 | 4769 | |
0c8d6e5c | 4770 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4771 | { |
4772 | p = &htab->dot_syms; | |
4773 | while ((eh = *p) != NULL) | |
4774 | { | |
4775 | *p = NULL; | |
1c865ab2 AM |
4776 | if (&eh->elf == htab->elf.hgot) |
4777 | ; | |
4778 | else if (htab->elf.hgot == NULL | |
4779 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4780 | htab->elf.hgot = &eh->elf; | |
4781 | else if (!add_symbol_adjust (eh, info)) | |
b3fac117 AM |
4782 | return FALSE; |
4783 | p = &eh->u.next_dot_sym; | |
4784 | } | |
4785 | } | |
4786 | ||
4787 | /* Clear the list for non-ppc64 input files. */ | |
4788 | p = &htab->dot_syms; | |
4789 | while ((eh = *p) != NULL) | |
4790 | { | |
4791 | *p = NULL; | |
4792 | p = &eh->u.next_dot_sym; | |
4793 | } | |
99877b66 AM |
4794 | |
4795 | /* We need to fix the undefs list for any syms we have twiddled to | |
4796 | undef_weak. */ | |
4797 | if (htab->twiddled_syms) | |
4798 | { | |
77cfaee6 | 4799 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4800 | htab->twiddled_syms = 0; |
4801 | } | |
b3fac117 | 4802 | return TRUE; |
8387904d AM |
4803 | } |
4804 | ||
97fed1c9 JJ |
4805 | /* Undo hash table changes when an --as-needed input file is determined |
4806 | not to be needed. */ | |
4807 | ||
4808 | static bfd_boolean | |
e5034e59 AM |
4809 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4810 | struct bfd_link_info *info, | |
4811 | enum notice_asneeded_action act) | |
97fed1c9 | 4812 | { |
e5034e59 AM |
4813 | if (act == notice_not_needed) |
4814 | { | |
4815 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4816 | |
e5034e59 AM |
4817 | if (htab == NULL) |
4818 | return FALSE; | |
4dfe6ac6 | 4819 | |
e5034e59 AM |
4820 | htab->dot_syms = NULL; |
4821 | } | |
4822 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4823 | } |
4824 | ||
aa374f67 AM |
4825 | /* If --just-symbols against a final linked binary, then assume we need |
4826 | toc adjusting stubs when calling functions defined there. */ | |
4827 | ||
4828 | static void | |
4829 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4830 | { | |
4831 | if ((sec->flags & SEC_CODE) != 0 | |
4832 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4833 | && is_ppc64_elf (sec->owner)) | |
4834 | { | |
4835 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
4836 | if (got != NULL | |
4837 | && got->size >= elf_backend_got_header_size | |
4838 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
4839 | sec->has_toc_reloc = 1; | |
4840 | } | |
4841 | _bfd_elf_link_just_syms (sec, info); | |
4842 | } | |
4843 | ||
e054468f | 4844 | static struct plt_entry ** |
4ce794b7 AM |
4845 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4846 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4847 | { |
4848 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4849 | struct plt_entry **local_plt; |
f961d9dd | 4850 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4851 | |
4852 | if (local_got_ents == NULL) | |
4853 | { | |
4854 | bfd_size_type size = symtab_hdr->sh_info; | |
4855 | ||
e054468f AM |
4856 | size *= (sizeof (*local_got_ents) |
4857 | + sizeof (*local_plt) | |
4858 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4859 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4860 | if (local_got_ents == NULL) |
e054468f | 4861 | return NULL; |
411e1bfb AM |
4862 | elf_local_got_ents (abfd) = local_got_ents; |
4863 | } | |
4864 | ||
e054468f | 4865 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4866 | { |
4867 | struct got_entry *ent; | |
4868 | ||
4869 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4870 | if (ent->addend == r_addend |
4871 | && ent->owner == abfd | |
4872 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4873 | break; |
4874 | if (ent == NULL) | |
4875 | { | |
4876 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4877 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4878 | if (ent == NULL) |
4879 | return FALSE; | |
4880 | ent->next = local_got_ents[r_symndx]; | |
4881 | ent->addend = r_addend; | |
e717da7e | 4882 | ent->owner = abfd; |
411e1bfb | 4883 | ent->tls_type = tls_type; |
927be08e | 4884 | ent->is_indirect = FALSE; |
411e1bfb AM |
4885 | ent->got.refcount = 0; |
4886 | local_got_ents[r_symndx] = ent; | |
4887 | } | |
4888 | ent->got.refcount += 1; | |
4889 | } | |
4890 | ||
e054468f | 4891 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4892 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 4893 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4894 | |
4895 | return local_plt + r_symndx; | |
65f38f15 AM |
4896 | } |
4897 | ||
411e1bfb | 4898 | static bfd_boolean |
e054468f | 4899 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4900 | { |
411e1bfb | 4901 | struct plt_entry *ent; |
1e2f5b6e | 4902 | |
e054468f | 4903 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4904 | if (ent->addend == addend) |
4905 | break; | |
4906 | if (ent == NULL) | |
1e2f5b6e | 4907 | { |
411e1bfb | 4908 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4909 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4910 | if (ent == NULL) |
4911 | return FALSE; | |
e054468f | 4912 | ent->next = *plist; |
411e1bfb AM |
4913 | ent->addend = addend; |
4914 | ent->plt.refcount = 0; | |
e054468f | 4915 | *plist = ent; |
1e2f5b6e | 4916 | } |
411e1bfb | 4917 | ent->plt.refcount += 1; |
b34976b6 | 4918 | return TRUE; |
1e2f5b6e AM |
4919 | } |
4920 | ||
e054468f AM |
4921 | static bfd_boolean |
4922 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4923 | { | |
4924 | return (r_type == R_PPC64_REL24 | |
4925 | || r_type == R_PPC64_REL14 | |
4926 | || r_type == R_PPC64_REL14_BRTAKEN | |
4927 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4928 | || r_type == R_PPC64_ADDR24 | |
4929 | || r_type == R_PPC64_ADDR14 | |
4930 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4931 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4932 | } | |
4933 | ||
5bd4f169 | 4934 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4935 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4936 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4937 | |
b34976b6 | 4938 | static bfd_boolean |
4ce794b7 AM |
4939 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4940 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4941 | { |
65f38f15 | 4942 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4943 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4944 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4945 | const Elf_Internal_Rela *rel; |
4946 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4947 | asection *sreloc; |
1e2f5b6e | 4948 | asection **opd_sym_map; |
3a71aa26 | 4949 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4950 | |
1049f94e | 4951 | if (info->relocatable) |
b34976b6 | 4952 | return TRUE; |
5bd4f169 | 4953 | |
680a3378 AM |
4954 | /* Don't do anything special with non-loaded, non-alloced sections. |
4955 | In particular, any relocs in such sections should not affect GOT | |
4956 | and PLT reference counting (ie. we don't allow them to create GOT | |
4957 | or PLT entries), there's no possibility or desire to optimize TLS | |
4958 | relocs, and there's not much point in propagating relocs to shared | |
4959 | libs that the dynamic linker won't relocate. */ | |
4960 | if ((sec->flags & SEC_ALLOC) == 0) | |
4961 | return TRUE; | |
4962 | ||
0c8d6e5c | 4963 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4964 | |
65f38f15 | 4965 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4966 | if (htab == NULL) |
4967 | return FALSE; | |
4968 | ||
3a71aa26 AM |
4969 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4970 | FALSE, FALSE, TRUE); | |
4971 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4972 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4973 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4974 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4975 | sreloc = NULL; |
1e2f5b6e | 4976 | opd_sym_map = NULL; |
70cc837d | 4977 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
4978 | { |
4979 | /* Garbage collection needs some extra help with .opd sections. | |
4980 | We don't want to necessarily keep everything referenced by | |
4981 | relocs in .opd, as that would keep all functions. Instead, | |
4982 | if we reference an .opd symbol (a function descriptor), we | |
4983 | want to keep the function code symbol's section. This is | |
4984 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4985 | information about the associated function section. */ |
1e2f5b6e AM |
4986 | bfd_size_type amt; |
4987 | ||
74f0fb50 | 4988 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4989 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4990 | if (opd_sym_map == NULL) |
b34976b6 | 4991 | return FALSE; |
74f0fb50 | 4992 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4993 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4994 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4995 | } |
5bd4f169 AM |
4996 | |
4997 | rel_end = relocs + sec->reloc_count; | |
4998 | for (rel = relocs; rel < rel_end; rel++) | |
4999 | { | |
5000 | unsigned long r_symndx; | |
5001 | struct elf_link_hash_entry *h; | |
04c9666a | 5002 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5003 | int tls_type; |
7c8fe5c4 | 5004 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5005 | struct plt_entry **ifunc; |
5bd4f169 AM |
5006 | |
5007 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5008 | if (r_symndx < symtab_hdr->sh_info) | |
5009 | h = NULL; | |
5010 | else | |
973a3492 L |
5011 | { |
5012 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5013 | h = elf_follow_link (h); |
81fbe831 AM |
5014 | |
5015 | /* PR15323, ref flags aren't set for references in the same | |
5016 | object. */ | |
5017 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5018 | |
5019 | if (h == htab->elf.hgot) | |
5020 | sec->has_toc_reloc = 1; | |
973a3492 | 5021 | } |
5bd4f169 | 5022 | |
727fc41e | 5023 | tls_type = 0; |
e054468f | 5024 | ifunc = NULL; |
25f23106 AM |
5025 | if (h != NULL) |
5026 | { | |
5027 | if (h->type == STT_GNU_IFUNC) | |
5028 | { | |
5029 | h->needs_plt = 1; | |
5030 | ifunc = &h->plt.plist; | |
5031 | } | |
5032 | } | |
5033 | else | |
5034 | { | |
5035 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5036 | abfd, r_symndx); | |
5037 | if (isym == NULL) | |
5038 | return FALSE; | |
5039 | ||
5040 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5041 | { | |
5042 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5043 | rel->r_addend, PLT_IFUNC); | |
5044 | if (ifunc == NULL) | |
5045 | return FALSE; | |
5046 | } | |
5047 | } | |
4ce794b7 | 5048 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5049 | if (is_branch_reloc (r_type)) |
5050 | { | |
5051 | if (h != NULL && (h == tga || h == dottga)) | |
5052 | { | |
5053 | if (rel != relocs | |
5054 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5055 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5056 | /* We have a new-style __tls_get_addr call with a marker | |
5057 | reloc. */ | |
5058 | ; | |
5059 | else | |
5060 | /* Mark this section as having an old-style call. */ | |
5061 | sec->has_tls_get_addr_call = 1; | |
5062 | } | |
727fc41e | 5063 | |
e054468f | 5064 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5065 | if (ifunc != NULL |
5066 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5067 | return FALSE; | |
5068 | } | |
727fc41e | 5069 | |
a33d1f77 | 5070 | switch (r_type) |
5bd4f169 | 5071 | { |
727fc41e AM |
5072 | case R_PPC64_TLSGD: |
5073 | case R_PPC64_TLSLD: | |
5074 | /* These special tls relocs tie a call to __tls_get_addr with | |
5075 | its parameter symbol. */ | |
5076 | break; | |
5077 | ||
411e1bfb AM |
5078 | case R_PPC64_GOT_TLSLD16: |
5079 | case R_PPC64_GOT_TLSLD16_LO: | |
5080 | case R_PPC64_GOT_TLSLD16_HI: | |
5081 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5082 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5083 | goto dogottls; |
5084 | ||
5085 | case R_PPC64_GOT_TLSGD16: | |
5086 | case R_PPC64_GOT_TLSGD16_LO: | |
5087 | case R_PPC64_GOT_TLSGD16_HI: | |
5088 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5089 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5090 | goto dogottls; |
5091 | ||
5092 | case R_PPC64_GOT_TPREL16_DS: | |
5093 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5094 | case R_PPC64_GOT_TPREL16_HI: | |
5095 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5096 | if (!info->executable) |
411e1bfb AM |
5097 | info->flags |= DF_STATIC_TLS; |
5098 | tls_type = TLS_TLS | TLS_TPREL; | |
5099 | goto dogottls; | |
5100 | ||
5101 | case R_PPC64_GOT_DTPREL16_DS: | |
5102 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5103 | case R_PPC64_GOT_DTPREL16_HI: | |
5104 | case R_PPC64_GOT_DTPREL16_HA: | |
5105 | tls_type = TLS_TLS | TLS_DTPREL; | |
5106 | dogottls: | |
5107 | sec->has_tls_reloc = 1; | |
5108 | /* Fall thru */ | |
5109 | ||
5bd4f169 | 5110 | case R_PPC64_GOT16: |
5bd4f169 | 5111 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5112 | case R_PPC64_GOT16_HA: |
5113 | case R_PPC64_GOT16_HI: | |
5114 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5115 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5116 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5117 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5118 | if (r_type == R_PPC64_GOT_TLSLD16 |
5119 | || r_type == R_PPC64_GOT_TLSGD16 | |
5120 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5121 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5122 | || r_type == R_PPC64_GOT16 | |
5123 | || r_type == R_PPC64_GOT16_DS) | |
5124 | { | |
5125 | htab->do_multi_toc = 1; | |
d77c8a4b | 5126 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5127 | } |
5128 | ||
e717da7e AM |
5129 | if (ppc64_elf_tdata (abfd)->got == NULL |
5130 | && !create_got_section (abfd, info)) | |
b34976b6 | 5131 | return FALSE; |
5bd4f169 AM |
5132 | |
5133 | if (h != NULL) | |
5134 | { | |
411e1bfb AM |
5135 | struct ppc_link_hash_entry *eh; |
5136 | struct got_entry *ent; | |
65f38f15 | 5137 | |
411e1bfb AM |
5138 | eh = (struct ppc_link_hash_entry *) h; |
5139 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5140 | if (ent->addend == rel->r_addend | |
e717da7e | 5141 | && ent->owner == abfd |
411e1bfb AM |
5142 | && ent->tls_type == tls_type) |
5143 | break; | |
5144 | if (ent == NULL) | |
5bd4f169 | 5145 | { |
411e1bfb | 5146 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5147 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5148 | if (ent == NULL) |
b34976b6 | 5149 | return FALSE; |
411e1bfb AM |
5150 | ent->next = eh->elf.got.glist; |
5151 | ent->addend = rel->r_addend; | |
e717da7e | 5152 | ent->owner = abfd; |
411e1bfb | 5153 | ent->tls_type = tls_type; |
927be08e | 5154 | ent->is_indirect = FALSE; |
411e1bfb AM |
5155 | ent->got.refcount = 0; |
5156 | eh->elf.got.glist = ent; | |
5bd4f169 | 5157 | } |
411e1bfb | 5158 | ent->got.refcount += 1; |
e7b938ca | 5159 | eh->tls_mask |= tls_type; |
5bd4f169 | 5160 | } |
411e1bfb AM |
5161 | else |
5162 | /* This is a global offset table entry for a local symbol. */ | |
5163 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5164 | rel->r_addend, tls_type)) | |
5165 | return FALSE; | |
5bd4f169 AM |
5166 | break; |
5167 | ||
5bd4f169 | 5168 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5169 | case R_PPC64_PLT16_HI: |
5170 | case R_PPC64_PLT16_LO: | |
5171 | case R_PPC64_PLT32: | |
5172 | case R_PPC64_PLT64: | |
5bd4f169 | 5173 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5174 | actually build the entry in adjust_dynamic_symbol, |
5175 | because this might be a case of linking PIC code without | |
5176 | linking in any dynamic objects, in which case we don't | |
5177 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5178 | if (h == NULL) |
5179 | { | |
5180 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5181 | table entry for a local symbol. */ |
5bd4f169 | 5182 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5183 | return FALSE; |
5bd4f169 | 5184 | } |
411e1bfb | 5185 | else |
e054468f AM |
5186 | { |
5187 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5188 | return FALSE; | |
5189 | h->needs_plt = 1; | |
5190 | if (h->root.root.string[0] == '.' | |
5191 | && h->root.root.string[1] != '\0') | |
5192 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5193 | } | |
5bd4f169 AM |
5194 | break; |
5195 | ||
5196 | /* The following relocations don't need to propagate the | |
5197 | relocation if linking a shared object since they are | |
5198 | section relative. */ | |
5199 | case R_PPC64_SECTOFF: | |
5200 | case R_PPC64_SECTOFF_LO: | |
5201 | case R_PPC64_SECTOFF_HI: | |
5202 | case R_PPC64_SECTOFF_HA: | |
5203 | case R_PPC64_SECTOFF_DS: | |
5204 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5205 | case R_PPC64_DTPREL16: |
5206 | case R_PPC64_DTPREL16_LO: | |
5207 | case R_PPC64_DTPREL16_HI: | |
5208 | case R_PPC64_DTPREL16_HA: | |
5209 | case R_PPC64_DTPREL16_DS: | |
5210 | case R_PPC64_DTPREL16_LO_DS: | |
5211 | case R_PPC64_DTPREL16_HIGHER: | |
5212 | case R_PPC64_DTPREL16_HIGHERA: | |
5213 | case R_PPC64_DTPREL16_HIGHEST: | |
5214 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5215 | break; |
5216 | ||
ad8e1ba5 | 5217 | /* Nor do these. */ |
25f23106 AM |
5218 | case R_PPC64_REL16: |
5219 | case R_PPC64_REL16_LO: | |
5220 | case R_PPC64_REL16_HI: | |
5221 | case R_PPC64_REL16_HA: | |
5222 | break; | |
5223 | ||
ad8e1ba5 | 5224 | case R_PPC64_TOC16: |
33c0ec9d AM |
5225 | case R_PPC64_TOC16_DS: |
5226 | htab->do_multi_toc = 1; | |
d77c8a4b | 5227 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5228 | case R_PPC64_TOC16_LO: |
5229 | case R_PPC64_TOC16_HI: | |
5230 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5231 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5232 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5233 | break; |
5234 | ||
5bd4f169 AM |
5235 | /* This relocation describes the C++ object vtable hierarchy. |
5236 | Reconstruct it for later use during GC. */ | |
5237 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5238 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5239 | return FALSE; |
5bd4f169 AM |
5240 | break; |
5241 | ||
5242 | /* This relocation describes which C++ vtable entries are actually | |
5243 | used. Record for later use during GC. */ | |
5244 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5245 | BFD_ASSERT (h != NULL); |
5246 | if (h != NULL | |
5247 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5248 | return FALSE; |
5bd4f169 AM |
5249 | break; |
5250 | ||
721956f4 AM |
5251 | case R_PPC64_REL14: |
5252 | case R_PPC64_REL14_BRTAKEN: | |
5253 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5254 | { |
5255 | asection *dest = NULL; | |
5256 | ||
5257 | /* Heuristic: If jumping outside our section, chances are | |
5258 | we are going to need a stub. */ | |
5259 | if (h != NULL) | |
5260 | { | |
5261 | /* If the sym is weak it may be overridden later, so | |
5262 | don't assume we know where a weak sym lives. */ | |
5263 | if (h->root.type == bfd_link_hash_defined) | |
5264 | dest = h->root.u.def.section; | |
5265 | } | |
5266 | else | |
87d72d41 AM |
5267 | { |
5268 | Elf_Internal_Sym *isym; | |
5269 | ||
5270 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5271 | abfd, r_symndx); | |
5272 | if (isym == NULL) | |
5273 | return FALSE; | |
5274 | ||
5275 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5276 | } | |
5277 | ||
220c76dd | 5278 | if (dest != sec) |
7c8fe5c4 | 5279 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5280 | } |
721956f4 AM |
5281 | /* Fall through. */ |
5282 | ||
5d1634d7 | 5283 | case R_PPC64_REL24: |
e054468f | 5284 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5285 | { |
5286 | /* We may need a .plt entry if the function this reloc | |
5287 | refers to is in a shared lib. */ | |
e054468f | 5288 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5289 | return FALSE; |
e054468f AM |
5290 | h->needs_plt = 1; |
5291 | if (h->root.root.string[0] == '.' | |
5292 | && h->root.root.string[1] != '\0') | |
5293 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5294 | if (h == tga || h == dottga) |
411e1bfb | 5295 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5296 | } |
5297 | break; | |
5298 | ||
5299 | case R_PPC64_TPREL64: | |
5300 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5301 | if (!info->executable) |
411e1bfb AM |
5302 | info->flags |= DF_STATIC_TLS; |
5303 | goto dotlstoc; | |
5304 | ||
5305 | case R_PPC64_DTPMOD64: | |
5306 | if (rel + 1 < rel_end | |
5307 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5308 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5309 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5310 | else |
951fd09b | 5311 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5312 | goto dotlstoc; |
5313 | ||
5314 | case R_PPC64_DTPREL64: | |
5315 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5316 | if (rel != relocs | |
5317 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5318 | && rel[-1].r_offset == rel->r_offset - 8) | |
5319 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5320 | Don't mark with TLS_DTPREL. */ | |
5321 | goto dodyn; | |
5322 | ||
5323 | dotlstoc: | |
5324 | sec->has_tls_reloc = 1; | |
5325 | if (h != NULL) | |
5326 | { | |
5327 | struct ppc_link_hash_entry *eh; | |
5328 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5329 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5330 | } |
5331 | else | |
5332 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5333 | rel->r_addend, tls_type)) | |
5334 | return FALSE; | |
5335 | ||
7c8fe5c4 AM |
5336 | ppc64_sec = ppc64_elf_section_data (sec); |
5337 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5338 | { |
3a71aa26 AM |
5339 | bfd_size_type amt; |
5340 | ||
e7b938ca | 5341 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5342 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5343 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5344 | if (ppc64_sec->u.toc.symndx == NULL) | |
5345 | return FALSE; | |
5346 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5347 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5348 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5349 | return FALSE; |
7c8fe5c4 AM |
5350 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5351 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5352 | } |
5353 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5354 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5355 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5356 | |
5357 | /* Mark the second slot of a GD or LD entry. | |
5358 | -1 to indicate GD and -2 to indicate LD. */ | |
5359 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5360 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5361 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5362 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5363 | goto dodyn; |
5364 | ||
5365 | case R_PPC64_TPREL16: | |
5366 | case R_PPC64_TPREL16_LO: | |
5367 | case R_PPC64_TPREL16_HI: | |
5368 | case R_PPC64_TPREL16_HA: | |
5369 | case R_PPC64_TPREL16_DS: | |
5370 | case R_PPC64_TPREL16_LO_DS: | |
5371 | case R_PPC64_TPREL16_HIGHER: | |
5372 | case R_PPC64_TPREL16_HIGHERA: | |
5373 | case R_PPC64_TPREL16_HIGHEST: | |
5374 | case R_PPC64_TPREL16_HIGHESTA: | |
5375 | if (info->shared) | |
5376 | { | |
1d483afe AM |
5377 | if (!info->executable) |
5378 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5379 | goto dodyn; |
5d1634d7 AM |
5380 | } |
5381 | break; | |
5382 | ||
e86ce104 | 5383 | case R_PPC64_ADDR64: |
1e2f5b6e | 5384 | if (opd_sym_map != NULL |
1e2f5b6e | 5385 | && rel + 1 < rel_end |
4ce794b7 | 5386 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5387 | { |
8387904d AM |
5388 | if (h != NULL) |
5389 | { | |
5390 | if (h->root.root.string[0] == '.' | |
5391 | && h->root.root.string[1] != 0 | |
b31867b6 | 5392 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5393 | ; |
5394 | else | |
5395 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5396 | } | |
5397 | else | |
5398 | { | |
5399 | asection *s; | |
87d72d41 | 5400 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5401 | |
87d72d41 AM |
5402 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5403 | abfd, r_symndx); | |
5404 | if (isym == NULL) | |
8387904d | 5405 | return FALSE; |
87d72d41 AM |
5406 | |
5407 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5408 | if (s != NULL && s != sec) | |
3f764659 | 5409 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5410 | } |
1e2f5b6e | 5411 | } |
e86ce104 AM |
5412 | /* Fall through. */ |
5413 | ||
04c9666a | 5414 | case R_PPC64_REL30: |
5bd4f169 | 5415 | case R_PPC64_REL32: |
04c9666a | 5416 | case R_PPC64_REL64: |
65f38f15 AM |
5417 | case R_PPC64_ADDR14: |
5418 | case R_PPC64_ADDR14_BRNTAKEN: | |
5419 | case R_PPC64_ADDR14_BRTAKEN: | |
5420 | case R_PPC64_ADDR16: | |
5421 | case R_PPC64_ADDR16_DS: | |
5422 | case R_PPC64_ADDR16_HA: | |
5423 | case R_PPC64_ADDR16_HI: | |
5424 | case R_PPC64_ADDR16_HIGHER: | |
5425 | case R_PPC64_ADDR16_HIGHERA: | |
5426 | case R_PPC64_ADDR16_HIGHEST: | |
5427 | case R_PPC64_ADDR16_HIGHESTA: | |
5428 | case R_PPC64_ADDR16_LO: | |
5429 | case R_PPC64_ADDR16_LO_DS: | |
5430 | case R_PPC64_ADDR24: | |
65f38f15 | 5431 | case R_PPC64_ADDR32: |
65f38f15 AM |
5432 | case R_PPC64_UADDR16: |
5433 | case R_PPC64_UADDR32: | |
5434 | case R_PPC64_UADDR64: | |
5bd4f169 | 5435 | case R_PPC64_TOC: |
81848ca0 AM |
5436 | if (h != NULL && !info->shared) |
5437 | /* We may need a copy reloc. */ | |
f5385ebf | 5438 | h->non_got_ref = 1; |
81848ca0 | 5439 | |
41bd81ab | 5440 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5441 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5442 | break; |
e86ce104 | 5443 | |
65f38f15 AM |
5444 | /* If we are creating a shared library, and this is a reloc |
5445 | against a global symbol, or a non PC relative reloc | |
5446 | against a local symbol, then we need to copy the reloc | |
5447 | into the shared library. However, if we are linking with | |
5448 | -Bsymbolic, we do not need to copy a reloc against a | |
5449 | global symbol which is defined in an object we are | |
5450 | including in the link (i.e., DEF_REGULAR is set). At | |
5451 | this point we have not seen all the input files, so it is | |
5452 | possible that DEF_REGULAR is not set now but will be set | |
5453 | later (it is never cleared). In case of a weak definition, | |
5454 | DEF_REGULAR may be cleared later by a strong definition in | |
5455 | a shared library. We account for that possibility below by | |
f4656909 | 5456 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5457 | table entry. A similar situation occurs when creating |
5458 | shared libraries and symbol visibility changes render the | |
5459 | symbol local. | |
5460 | ||
5461 | If on the other hand, we are creating an executable, we | |
5462 | may need to keep relocations for symbols satisfied by a | |
5463 | dynamic library if we manage to avoid copy relocs for the | |
5464 | symbol. */ | |
411e1bfb | 5465 | dodyn: |
65f38f15 | 5466 | if ((info->shared |
1d483afe | 5467 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5468 | || (h != NULL |
198f1157 | 5469 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5470 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5471 | || !h->def_regular)))) |
f4656909 AM |
5472 | || (ELIMINATE_COPY_RELOCS |
5473 | && !info->shared | |
65f38f15 AM |
5474 | && h != NULL |
5475 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5476 | || !h->def_regular)) |
5477 | || (!info->shared | |
5478 | && ifunc != NULL)) | |
5bd4f169 | 5479 | { |
65f38f15 AM |
5480 | /* We must copy these reloc types into the output file. |
5481 | Create a reloc section in dynobj and make room for | |
5482 | this reloc. */ | |
5bd4f169 AM |
5483 | if (sreloc == NULL) |
5484 | { | |
83bac4b0 NC |
5485 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5486 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5487 | |
5bd4f169 | 5488 | if (sreloc == NULL) |
83bac4b0 | 5489 | return FALSE; |
5bd4f169 AM |
5490 | } |
5491 | ||
65f38f15 AM |
5492 | /* If this is a global symbol, we count the number of |
5493 | relocations we need for this symbol. */ | |
5494 | if (h != NULL) | |
5495 | { | |
19e08130 AM |
5496 | struct elf_dyn_relocs *p; |
5497 | struct elf_dyn_relocs **head; | |
5498 | ||
ec338859 | 5499 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5500 | p = *head; |
5501 | if (p == NULL || p->sec != sec) | |
5502 | { | |
5503 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5504 | if (p == NULL) | |
5505 | return FALSE; | |
5506 | p->next = *head; | |
5507 | *head = p; | |
5508 | p->sec = sec; | |
5509 | p->count = 0; | |
5510 | p->pc_count = 0; | |
5511 | } | |
5512 | p->count += 1; | |
5513 | if (!must_be_dyn_reloc (info, r_type)) | |
5514 | p->pc_count += 1; | |
65f38f15 AM |
5515 | } |
5516 | else | |
5517 | { | |
ec338859 AM |
5518 | /* Track dynamic relocs needed for local syms too. |
5519 | We really need local syms available to do this | |
5520 | easily. Oh well. */ | |
19e08130 AM |
5521 | struct ppc_dyn_relocs *p; |
5522 | struct ppc_dyn_relocs **head; | |
5523 | bfd_boolean is_ifunc; | |
ec338859 | 5524 | asection *s; |
6edfbbad | 5525 | void *vpp; |
87d72d41 | 5526 | Elf_Internal_Sym *isym; |
6edfbbad | 5527 | |
87d72d41 AM |
5528 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5529 | abfd, r_symndx); | |
5530 | if (isym == NULL) | |
b34976b6 | 5531 | return FALSE; |
ec338859 | 5532 | |
87d72d41 AM |
5533 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5534 | if (s == NULL) | |
5535 | s = sec; | |
5536 | ||
6edfbbad | 5537 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5538 | head = (struct ppc_dyn_relocs **) vpp; |
5539 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5540 | p = *head; | |
5541 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5542 | p = p->next; | |
5543 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5544 | { | |
5545 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5546 | if (p == NULL) | |
5547 | return FALSE; | |
5548 | p->next = *head; | |
5549 | *head = p; | |
5550 | p->sec = sec; | |
5551 | p->ifunc = is_ifunc; | |
5552 | p->count = 0; | |
5553 | } | |
5554 | p->count += 1; | |
ec338859 | 5555 | } |
65f38f15 | 5556 | } |
5bd4f169 | 5557 | break; |
65f38f15 AM |
5558 | |
5559 | default: | |
96e0dda4 | 5560 | break; |
5bd4f169 AM |
5561 | } |
5562 | } | |
5563 | ||
b34976b6 | 5564 | return TRUE; |
5bd4f169 AM |
5565 | } |
5566 | ||
8387904d AM |
5567 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5568 | of the code entry point, and its section. */ | |
5569 | ||
5570 | static bfd_vma | |
5571 | opd_entry_value (asection *opd_sec, | |
5572 | bfd_vma offset, | |
5573 | asection **code_sec, | |
aef36ac1 AM |
5574 | bfd_vma *code_off, |
5575 | bfd_boolean in_code_sec) | |
8387904d AM |
5576 | { |
5577 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5578 | Elf_Internal_Rela *relocs; |
8387904d | 5579 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5580 | bfd_vma val; |
8387904d | 5581 | |
9f296da3 AM |
5582 | /* No relocs implies we are linking a --just-symbols object, or looking |
5583 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5584 | if (opd_sec->reloc_count == 0) |
5585 | { | |
729eabd5 | 5586 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5587 | |
729eabd5 AM |
5588 | if (contents == NULL) |
5589 | { | |
5590 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5591 | return (bfd_vma) -1; | |
5592 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5593 | } | |
ee1e4ede | 5594 | |
729eabd5 | 5595 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5596 | if (code_sec != NULL) |
5597 | { | |
5598 | asection *sec, *likely = NULL; | |
ee1e4ede | 5599 | |
aef36ac1 | 5600 | if (in_code_sec) |
4b85d634 | 5601 | { |
aef36ac1 AM |
5602 | sec = *code_sec; |
5603 | if (sec->vma <= val | |
5604 | && val < sec->vma + sec->size) | |
5605 | likely = sec; | |
5606 | else | |
5607 | val = -1; | |
5608 | } | |
5609 | else | |
5610 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5611 | if (sec->vma <= val | |
5612 | && (sec->flags & SEC_LOAD) != 0 | |
5613 | && (sec->flags & SEC_ALLOC) != 0) | |
5614 | likely = sec; | |
5615 | if (likely != NULL) | |
5616 | { | |
5617 | *code_sec = likely; | |
5618 | if (code_off != NULL) | |
5619 | *code_off = val - likely->vma; | |
4b85d634 AM |
5620 | } |
5621 | } | |
aef36ac1 | 5622 | return val; |
4b85d634 AM |
5623 | } |
5624 | ||
0c8d6e5c | 5625 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5626 | |
729eabd5 | 5627 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5628 | if (relocs == NULL) |
5629 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5630 | |
8387904d | 5631 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5632 | lo = relocs; |
8387904d AM |
5633 | BFD_ASSERT (lo != NULL); |
5634 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5635 | val = (bfd_vma) -1; |
8387904d AM |
5636 | while (lo < hi) |
5637 | { | |
5638 | look = lo + (hi - lo) / 2; | |
5639 | if (look->r_offset < offset) | |
5640 | lo = look + 1; | |
5641 | else if (look->r_offset > offset) | |
5642 | hi = look; | |
5643 | else | |
5644 | { | |
0ffa91dd NC |
5645 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5646 | ||
8387904d AM |
5647 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5648 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5649 | { | |
5650 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5651 | asection *sec; |
5652 | ||
62599110 AM |
5653 | if (symndx < symtab_hdr->sh_info |
5654 | || elf_sym_hashes (opd_bfd) == NULL) | |
8387904d AM |
5655 | { |
5656 | Elf_Internal_Sym *sym; | |
5657 | ||
5658 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5659 | if (sym == NULL) | |
5660 | { | |
62599110 AM |
5661 | size_t symcnt = symtab_hdr->sh_info; |
5662 | if (elf_sym_hashes (opd_bfd) == NULL) | |
5663 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
5664 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
8387904d AM |
5665 | 0, NULL, NULL, NULL); |
5666 | if (sym == NULL) | |
645ea6a9 | 5667 | break; |
8387904d AM |
5668 | symtab_hdr->contents = (bfd_byte *) sym; |
5669 | } | |
5670 | ||
5671 | sym += symndx; | |
5672 | val = sym->st_value; | |
cb33740c | 5673 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5674 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5675 | } | |
5676 | else | |
5677 | { | |
5678 | struct elf_link_hash_entry **sym_hashes; | |
5679 | struct elf_link_hash_entry *rh; | |
5680 | ||
5681 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5682 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5683 | if (rh != NULL) |
5684 | { | |
5685 | rh = elf_follow_link (rh); | |
5686 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5687 | || rh->root.type == bfd_link_hash_defweak); | |
5688 | val = rh->root.u.def.value; | |
5689 | sec = rh->root.u.def.section; | |
5690 | } | |
5691 | else | |
5692 | { | |
5693 | /* Handle the odd case where we can be called | |
5694 | during bfd_elf_link_add_symbols before the | |
5695 | symbol hashes have been fully populated. */ | |
5696 | Elf_Internal_Sym *sym; | |
5697 | ||
5698 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
5699 | symndx, NULL, NULL, NULL); | |
5700 | if (sym == NULL) | |
5701 | break; | |
5702 | ||
5703 | val = sym->st_value; | |
5704 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5705 | free (sym); | |
5706 | } | |
8387904d AM |
5707 | } |
5708 | val += look->r_addend; | |
5709 | if (code_off != NULL) | |
5710 | *code_off = val; | |
5711 | if (code_sec != NULL) | |
aef36ac1 AM |
5712 | { |
5713 | if (in_code_sec && *code_sec != sec) | |
5714 | return -1; | |
5715 | else | |
5716 | *code_sec = sec; | |
5717 | } | |
8387904d AM |
5718 | if (sec != NULL && sec->output_section != NULL) |
5719 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5720 | } |
5721 | break; | |
5722 | } | |
5723 | } | |
645ea6a9 | 5724 | |
645ea6a9 | 5725 | return val; |
8387904d AM |
5726 | } |
5727 | ||
aef36ac1 AM |
5728 | /* If the ELF symbol SYM might be a function in SEC, return the |
5729 | function size and set *CODE_OFF to the function's entry point, | |
5730 | otherwise return zero. */ | |
9f296da3 | 5731 | |
aef36ac1 AM |
5732 | static bfd_size_type |
5733 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5734 | bfd_vma *code_off) | |
9f296da3 | 5735 | { |
aef36ac1 AM |
5736 | bfd_size_type size; |
5737 | ||
5738 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5739 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5740 | return 0; | |
5741 | ||
5742 | size = 0; | |
5743 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5744 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5745 | ||
5746 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5747 | { |
aef36ac1 AM |
5748 | if (opd_entry_value (sym->section, sym->value, |
5749 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
5750 | return 0; | |
5751 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5752 | symbol. This size has nothing to do with the code size of the | |
5753 | function, which is what we're supposed to return, but the | |
5754 | code size isn't available without looking up the dot-sym. | |
5755 | However, doing that would be a waste of time particularly | |
5756 | since elf_find_function will look at the dot-sym anyway. | |
5757 | Now, elf_find_function will keep the largest size of any | |
5758 | function sym found at the code address of interest, so return | |
5759 | 1 here to avoid it incorrectly caching a larger function size | |
5760 | for a small function. This does mean we return the wrong | |
5761 | size for a new-ABI function of size 24, but all that does is | |
5762 | disable caching for such functions. */ | |
5763 | if (size == 24) | |
5764 | size = 1; | |
9f296da3 | 5765 | } |
aef36ac1 AM |
5766 | else |
5767 | { | |
5768 | if (sym->section != sec) | |
5769 | return 0; | |
5770 | *code_off = sym->value; | |
5771 | } | |
5772 | if (size == 0) | |
5773 | size = 1; | |
5774 | return size; | |
9f296da3 AM |
5775 | } |
5776 | ||
854b41e7 AM |
5777 | /* Return true if symbol is defined in a regular object file. */ |
5778 | ||
5779 | static bfd_boolean | |
5780 | is_static_defined (struct elf_link_hash_entry *h) | |
5781 | { | |
5782 | return ((h->root.type == bfd_link_hash_defined | |
5783 | || h->root.type == bfd_link_hash_defweak) | |
5784 | && h->root.u.def.section != NULL | |
5785 | && h->root.u.def.section->output_section != NULL); | |
5786 | } | |
5787 | ||
b31867b6 AM |
5788 | /* If FDH is a function descriptor symbol, return the associated code |
5789 | entry symbol if it is defined. Return NULL otherwise. */ | |
5790 | ||
5791 | static struct ppc_link_hash_entry * | |
5792 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5793 | { | |
5794 | if (fdh->is_func_descriptor) | |
5795 | { | |
5796 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5797 | if (fh->elf.root.type == bfd_link_hash_defined | |
5798 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5799 | return fh; | |
5800 | } | |
5801 | return NULL; | |
5802 | } | |
5803 | ||
5804 | /* If FH is a function code entry symbol, return the associated | |
5805 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5806 | ||
5807 | static struct ppc_link_hash_entry * | |
5808 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5809 | { | |
5810 | if (fh->oh != NULL | |
5811 | && fh->oh->is_func_descriptor) | |
5812 | { | |
5813 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5814 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5815 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5816 | return fdh; | |
5817 | } | |
5818 | return NULL; | |
5819 | } | |
5820 | ||
74f0fb50 AM |
5821 | /* Mark all our entry sym sections, both opd and code section. */ |
5822 | ||
5823 | static void | |
5824 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5825 | { | |
5826 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5827 | struct bfd_sym_chain *sym; | |
5828 | ||
4dfe6ac6 NC |
5829 | if (htab == NULL) |
5830 | return; | |
5831 | ||
74f0fb50 AM |
5832 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5833 | { | |
b31867b6 | 5834 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5835 | asection *sec; |
5836 | ||
5837 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5838 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5839 | if (eh == NULL) |
5840 | continue; | |
5841 | if (eh->elf.root.type != bfd_link_hash_defined | |
5842 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5843 | continue; | |
5844 | ||
b31867b6 AM |
5845 | fh = defined_code_entry (eh); |
5846 | if (fh != NULL) | |
74f0fb50 | 5847 | { |
b31867b6 | 5848 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5849 | sec->flags |= SEC_KEEP; |
5850 | } | |
5851 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5852 | && opd_entry_value (eh->elf.root.u.def.section, | |
5853 | eh->elf.root.u.def.value, | |
aef36ac1 | 5854 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5855 | sec->flags |= SEC_KEEP; |
5856 | ||
5857 | sec = eh->elf.root.u.def.section; | |
5858 | sec->flags |= SEC_KEEP; | |
5859 | } | |
5860 | } | |
5861 | ||
64d03ab5 AM |
5862 | /* Mark sections containing dynamically referenced symbols. When |
5863 | building shared libraries, we must assume that any visible symbol is | |
5864 | referenced. */ | |
5865 | ||
5866 | static bfd_boolean | |
5867 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5868 | { | |
5869 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5870 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5871 | struct ppc_link_hash_entry *fdh; |
64d03ab5 | 5872 | |
64d03ab5 | 5873 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5874 | fdh = defined_func_desc (eh); |
5875 | if (fdh != NULL) | |
5876 | eh = fdh; | |
64d03ab5 AM |
5877 | |
5878 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5879 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5880 | && (eh->elf.ref_dynamic | |
5881 | || (!info->executable | |
5882 | && eh->elf.def_regular | |
5883 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
4c58e0d8 AM |
5884 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
5885 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
5886 | || !bfd_hide_sym_by_version (info->version_info, | |
5887 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5888 | { |
5889 | asection *code_sec; | |
b31867b6 | 5890 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5891 | |
5892 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5893 | ||
5894 | /* Function descriptor syms cause the associated | |
5895 | function code sym section to be marked. */ | |
b31867b6 AM |
5896 | fh = defined_code_entry (eh); |
5897 | if (fh != NULL) | |
5898 | { | |
5899 | code_sec = fh->elf.root.u.def.section; | |
5900 | code_sec->flags |= SEC_KEEP; | |
5901 | } | |
64d03ab5 AM |
5902 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5903 | && opd_entry_value (eh->elf.root.u.def.section, | |
5904 | eh->elf.root.u.def.value, | |
aef36ac1 | 5905 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5906 | code_sec->flags |= SEC_KEEP; |
5907 | } | |
5908 | ||
5909 | return TRUE; | |
5910 | } | |
5911 | ||
5bd4f169 AM |
5912 | /* Return the section that should be marked against GC for a given |
5913 | relocation. */ | |
5914 | ||
5915 | static asection * | |
4ce794b7 | 5916 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5917 | struct bfd_link_info *info, |
4ce794b7 AM |
5918 | Elf_Internal_Rela *rel, |
5919 | struct elf_link_hash_entry *h, | |
5920 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5921 | { |
ccfa59ea AM |
5922 | asection *rsec; |
5923 | ||
ccfa59ea AM |
5924 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5925 | function sections, as all functions are referenced in .opd. */ | |
5926 | rsec = NULL; | |
5927 | if (get_opd_info (sec) != NULL) | |
5928 | return rsec; | |
1e2f5b6e | 5929 | |
5bd4f169 AM |
5930 | if (h != NULL) |
5931 | { | |
04c9666a | 5932 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5933 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5934 | |
4ce794b7 | 5935 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5936 | switch (r_type) |
5bd4f169 AM |
5937 | { |
5938 | case R_PPC64_GNU_VTINHERIT: | |
5939 | case R_PPC64_GNU_VTENTRY: | |
5940 | break; | |
5941 | ||
5942 | default: | |
5943 | switch (h->root.type) | |
5944 | { | |
5945 | case bfd_link_hash_defined: | |
5946 | case bfd_link_hash_defweak: | |
ccfa59ea | 5947 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5948 | fdh = defined_func_desc (eh); |
5949 | if (fdh != NULL) | |
5950 | eh = fdh; | |
1e2f5b6e AM |
5951 | |
5952 | /* Function descriptor syms cause the associated | |
5953 | function code sym section to be marked. */ | |
b31867b6 AM |
5954 | fh = defined_code_entry (eh); |
5955 | if (fh != NULL) | |
ccfa59ea AM |
5956 | { |
5957 | /* They also mark their opd section. */ | |
74f0fb50 | 5958 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5959 | |
b31867b6 | 5960 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5961 | } |
8387904d AM |
5962 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5963 | && opd_entry_value (eh->elf.root.u.def.section, | |
5964 | eh->elf.root.u.def.value, | |
aef36ac1 | 5965 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5966 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5967 | else |
1e2f5b6e AM |
5968 | rsec = h->root.u.def.section; |
5969 | break; | |
5bd4f169 AM |
5970 | |
5971 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5972 | rsec = h->root.u.c.p->section; |
5973 | break; | |
5bd4f169 AM |
5974 | |
5975 | default: | |
fb34365b | 5976 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5977 | } |
5978 | } | |
5979 | } | |
5980 | else | |
5981 | { | |
74f0fb50 | 5982 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5983 | |
5984 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5985 | opd = get_opd_info (rsec); |
5986 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5987 | { |
74f0fb50 | 5988 | rsec->gc_mark = 1; |
ccfa59ea | 5989 | |
74f0fb50 | 5990 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5991 | } |
5bd4f169 AM |
5992 | } |
5993 | ||
1e2f5b6e | 5994 | return rsec; |
5bd4f169 AM |
5995 | } |
5996 | ||
65f38f15 AM |
5997 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5998 | section being removed. */ | |
5bd4f169 | 5999 | |
b34976b6 | 6000 | static bfd_boolean |
4ce794b7 AM |
6001 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6002 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6003 | { |
411e1bfb | 6004 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6005 | Elf_Internal_Shdr *symtab_hdr; |
6006 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6007 | struct got_entry **local_got_ents; |
5bd4f169 | 6008 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6009 | |
7dda2462 TG |
6010 | if (info->relocatable) |
6011 | return TRUE; | |
6012 | ||
680a3378 AM |
6013 | if ((sec->flags & SEC_ALLOC) == 0) |
6014 | return TRUE; | |
6015 | ||
ec338859 AM |
6016 | elf_section_data (sec)->local_dynrel = NULL; |
6017 | ||
411e1bfb | 6018 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6019 | if (htab == NULL) |
6020 | return FALSE; | |
6021 | ||
0ffa91dd | 6022 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6023 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6024 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6025 | |
6026 | relend = relocs + sec->reloc_count; | |
6027 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6028 | { |
6029 | unsigned long r_symndx; | |
04c9666a | 6030 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6031 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6032 | unsigned char tls_type = 0; |
5bd4f169 | 6033 | |
a33d1f77 | 6034 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6035 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6036 | if (r_symndx >= symtab_hdr->sh_info) |
6037 | { | |
6038 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6039 | struct elf_dyn_relocs **pp; |
6040 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6041 | |
6042 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6043 | h = elf_follow_link (h); |
58ac9f71 AM |
6044 | eh = (struct ppc_link_hash_entry *) h; |
6045 | ||
6046 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6047 | if (p->sec == sec) | |
6048 | { | |
6049 | /* Everything must go for SEC. */ | |
6050 | *pp = p->next; | |
6051 | break; | |
6052 | } | |
6053 | } | |
6054 | ||
e054468f AM |
6055 | if (is_branch_reloc (r_type)) |
6056 | { | |
6057 | struct plt_entry **ifunc = NULL; | |
6058 | if (h != NULL) | |
6059 | { | |
6060 | if (h->type == STT_GNU_IFUNC) | |
6061 | ifunc = &h->plt.plist; | |
6062 | } | |
6063 | else if (local_got_ents != NULL) | |
6064 | { | |
6065 | struct plt_entry **local_plt = (struct plt_entry **) | |
6066 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6067 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6068 | (local_plt + symtab_hdr->sh_info); |
6069 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6070 | ifunc = local_plt + r_symndx; | |
6071 | } | |
6072 | if (ifunc != NULL) | |
6073 | { | |
6074 | struct plt_entry *ent; | |
6075 | ||
6076 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6077 | if (ent->addend == rel->r_addend) | |
6078 | break; | |
6079 | if (ent == NULL) | |
6080 | abort (); | |
6081 | if (ent->plt.refcount > 0) | |
6082 | ent->plt.refcount -= 1; | |
6083 | continue; | |
6084 | } | |
6085 | } | |
6086 | ||
a33d1f77 AM |
6087 | switch (r_type) |
6088 | { | |
411e1bfb AM |
6089 | case R_PPC64_GOT_TLSLD16: |
6090 | case R_PPC64_GOT_TLSLD16_LO: | |
6091 | case R_PPC64_GOT_TLSLD16_HI: | |
6092 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6093 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6094 | goto dogot; |
6095 | ||
6096 | case R_PPC64_GOT_TLSGD16: | |
6097 | case R_PPC64_GOT_TLSGD16_LO: | |
6098 | case R_PPC64_GOT_TLSGD16_HI: | |
6099 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6100 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6101 | goto dogot; |
6102 | ||
6103 | case R_PPC64_GOT_TPREL16_DS: | |
6104 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6105 | case R_PPC64_GOT_TPREL16_HI: | |
6106 | case R_PPC64_GOT_TPREL16_HA: | |
6107 | tls_type = TLS_TLS | TLS_TPREL; | |
6108 | goto dogot; | |
6109 | ||
6110 | case R_PPC64_GOT_DTPREL16_DS: | |
6111 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6112 | case R_PPC64_GOT_DTPREL16_HI: | |
6113 | case R_PPC64_GOT_DTPREL16_HA: | |
6114 | tls_type = TLS_TLS | TLS_DTPREL; | |
6115 | goto dogot; | |
6116 | ||
a33d1f77 AM |
6117 | case R_PPC64_GOT16: |
6118 | case R_PPC64_GOT16_DS: | |
6119 | case R_PPC64_GOT16_HA: | |
6120 | case R_PPC64_GOT16_HI: | |
6121 | case R_PPC64_GOT16_LO: | |
6122 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6123 | dogot: |
6124 | { | |
6125 | struct got_entry *ent; | |
6126 | ||
58ac9f71 AM |
6127 | if (h != NULL) |
6128 | ent = h->got.glist; | |
411e1bfb AM |
6129 | else |
6130 | ent = local_got_ents[r_symndx]; | |
6131 | ||
6132 | for (; ent != NULL; ent = ent->next) | |
6133 | if (ent->addend == rel->r_addend | |
e717da7e | 6134 | && ent->owner == abfd |
411e1bfb AM |
6135 | && ent->tls_type == tls_type) |
6136 | break; | |
6137 | if (ent == NULL) | |
6138 | abort (); | |
6139 | if (ent->got.refcount > 0) | |
6140 | ent->got.refcount -= 1; | |
6141 | } | |
a33d1f77 | 6142 | break; |
65f38f15 | 6143 | |
a33d1f77 AM |
6144 | case R_PPC64_PLT16_HA: |
6145 | case R_PPC64_PLT16_HI: | |
6146 | case R_PPC64_PLT16_LO: | |
6147 | case R_PPC64_PLT32: | |
6148 | case R_PPC64_PLT64: | |
721956f4 AM |
6149 | case R_PPC64_REL14: |
6150 | case R_PPC64_REL14_BRNTAKEN: | |
6151 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6152 | case R_PPC64_REL24: |
58ac9f71 | 6153 | if (h != NULL) |
5d1634d7 | 6154 | { |
411e1bfb AM |
6155 | struct plt_entry *ent; |
6156 | ||
411e1bfb AM |
6157 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6158 | if (ent->addend == rel->r_addend) | |
6159 | break; | |
7c6c1722 | 6160 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6161 | ent->plt.refcount -= 1; |
5d1634d7 | 6162 | } |
e86ce104 | 6163 | break; |
5d1634d7 | 6164 | |
a33d1f77 AM |
6165 | default: |
6166 | break; | |
6167 | } | |
6168 | } | |
b34976b6 | 6169 | return TRUE; |
5bd4f169 AM |
6170 | } |
6171 | ||
deb0e272 AM |
6172 | /* The maximum size of .sfpr. */ |
6173 | #define SFPR_MAX (218*4) | |
6174 | ||
6175 | struct sfpr_def_parms | |
6176 | { | |
699733f6 AM |
6177 | const char name[12]; |
6178 | unsigned char lo, hi; | |
deb0e272 AM |
6179 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6180 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6181 | }; | |
6182 | ||
6183 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6184 | ||
4dfe6ac6 | 6185 | static bfd_boolean |
deb0e272 AM |
6186 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6187 | { | |
6188 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6189 | unsigned int i; | |
6190 | size_t len = strlen (parm->name); | |
6191 | bfd_boolean writing = FALSE; | |
699733f6 | 6192 | char sym[16]; |
deb0e272 | 6193 | |
4dfe6ac6 NC |
6194 | if (htab == NULL) |
6195 | return FALSE; | |
6196 | ||
deb0e272 AM |
6197 | memcpy (sym, parm->name, len); |
6198 | sym[len + 2] = 0; | |
6199 | ||
6200 | for (i = parm->lo; i <= parm->hi; i++) | |
6201 | { | |
6202 | struct elf_link_hash_entry *h; | |
6203 | ||
6204 | sym[len + 0] = i / 10 + '0'; | |
6205 | sym[len + 1] = i % 10 + '0'; | |
6206 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6207 | if (h != NULL | |
f5385ebf | 6208 | && !h->def_regular) |
deb0e272 AM |
6209 | { |
6210 | h->root.type = bfd_link_hash_defined; | |
6211 | h->root.u.def.section = htab->sfpr; | |
6212 | h->root.u.def.value = htab->sfpr->size; | |
6213 | h->type = STT_FUNC; | |
f5385ebf | 6214 | h->def_regular = 1; |
deb0e272 AM |
6215 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6216 | writing = TRUE; | |
6217 | if (htab->sfpr->contents == NULL) | |
6218 | { | |
6219 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6220 | if (htab->sfpr->contents == NULL) | |
6221 | return FALSE; | |
6222 | } | |
6223 | } | |
6224 | if (writing) | |
6225 | { | |
6226 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6227 | if (i != parm->hi) | |
6228 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6229 | else | |
6230 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6231 | htab->sfpr->size = p - htab->sfpr->contents; | |
6232 | } | |
6233 | } | |
6234 | ||
6235 | return TRUE; | |
6236 | } | |
6237 | ||
6238 | static bfd_byte * | |
6239 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6240 | { | |
6241 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6242 | return p + 4; | |
6243 | } | |
6244 | ||
6245 | static bfd_byte * | |
6246 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6247 | { | |
6248 | p = savegpr0 (abfd, p, r); | |
6249 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6250 | p = p + 4; | |
6251 | bfd_put_32 (abfd, BLR, p); | |
6252 | return p + 4; | |
6253 | } | |
6254 | ||
6255 | static bfd_byte * | |
6256 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6257 | { | |
6258 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6259 | return p + 4; | |
6260 | } | |
6261 | ||
6262 | static bfd_byte * | |
6263 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6264 | { | |
6265 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6266 | p = p + 4; | |
6267 | p = restgpr0 (abfd, p, r); | |
6268 | bfd_put_32 (abfd, MTLR_R0, p); | |
6269 | p = p + 4; | |
6270 | if (r == 29) | |
6271 | { | |
6272 | p = restgpr0 (abfd, p, 30); | |
6273 | p = restgpr0 (abfd, p, 31); | |
6274 | } | |
6275 | bfd_put_32 (abfd, BLR, p); | |
6276 | return p + 4; | |
6277 | } | |
6278 | ||
6279 | static bfd_byte * | |
6280 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6281 | { | |
6282 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6283 | return p + 4; | |
6284 | } | |
6285 | ||
6286 | static bfd_byte * | |
6287 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6288 | { | |
6289 | p = savegpr1 (abfd, p, r); | |
6290 | bfd_put_32 (abfd, BLR, p); | |
6291 | return p + 4; | |
6292 | } | |
6293 | ||
6294 | static bfd_byte * | |
6295 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6296 | { | |
6297 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6298 | return p + 4; | |
6299 | } | |
6300 | ||
6301 | static bfd_byte * | |
6302 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6303 | { | |
6304 | p = restgpr1 (abfd, p, r); | |
6305 | bfd_put_32 (abfd, BLR, p); | |
6306 | return p + 4; | |
6307 | } | |
6308 | ||
6309 | static bfd_byte * | |
6310 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6311 | { | |
6312 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6313 | return p + 4; | |
6314 | } | |
6315 | ||
6316 | static bfd_byte * | |
6317 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6318 | { | |
6319 | p = savefpr (abfd, p, r); | |
6320 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6321 | p = p + 4; | |
6322 | bfd_put_32 (abfd, BLR, p); | |
6323 | return p + 4; | |
6324 | } | |
6325 | ||
6326 | static bfd_byte * | |
6327 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6328 | { | |
6329 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6330 | return p + 4; | |
6331 | } | |
6332 | ||
6333 | static bfd_byte * | |
6334 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6335 | { | |
6336 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6337 | p = p + 4; | |
6338 | p = restfpr (abfd, p, r); | |
6339 | bfd_put_32 (abfd, MTLR_R0, p); | |
6340 | p = p + 4; | |
6341 | if (r == 29) | |
6342 | { | |
6343 | p = restfpr (abfd, p, 30); | |
6344 | p = restfpr (abfd, p, 31); | |
6345 | } | |
6346 | bfd_put_32 (abfd, BLR, p); | |
6347 | return p + 4; | |
6348 | } | |
6349 | ||
6350 | static bfd_byte * | |
6351 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6352 | { | |
6353 | p = savefpr (abfd, p, r); | |
6354 | bfd_put_32 (abfd, BLR, p); | |
6355 | return p + 4; | |
6356 | } | |
6357 | ||
6358 | static bfd_byte * | |
6359 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6360 | { | |
6361 | p = restfpr (abfd, p, r); | |
6362 | bfd_put_32 (abfd, BLR, p); | |
6363 | return p + 4; | |
6364 | } | |
6365 | ||
6366 | static bfd_byte * | |
6367 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6368 | { | |
6369 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6370 | p = p + 4; | |
6371 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6372 | return p + 4; | |
6373 | } | |
6374 | ||
6375 | static bfd_byte * | |
6376 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6377 | { | |
6378 | p = savevr (abfd, p, r); | |
6379 | bfd_put_32 (abfd, BLR, p); | |
6380 | return p + 4; | |
6381 | } | |
6382 | ||
6383 | static bfd_byte * | |
6384 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6385 | { | |
6386 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6387 | p = p + 4; | |
6388 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6389 | return p + 4; | |
6390 | } | |
6391 | ||
6392 | static bfd_byte * | |
6393 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6394 | { | |
6395 | p = restvr (abfd, p, r); | |
6396 | bfd_put_32 (abfd, BLR, p); | |
6397 | return p + 4; | |
6398 | } | |
6399 | ||
e86ce104 AM |
6400 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6401 | information on function code symbol entries to their corresponding | |
6402 | function descriptor symbol entries. */ | |
deb0e272 | 6403 | |
b34976b6 | 6404 | static bfd_boolean |
4ce794b7 | 6405 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6406 | { |
e86ce104 | 6407 | struct bfd_link_info *info; |
65f38f15 | 6408 | struct ppc_link_hash_table *htab; |
411e1bfb | 6409 | struct plt_entry *ent; |
50bc7936 AM |
6410 | struct ppc_link_hash_entry *fh; |
6411 | struct ppc_link_hash_entry *fdh; | |
6412 | bfd_boolean force_local; | |
5bd4f169 | 6413 | |
50bc7936 AM |
6414 | fh = (struct ppc_link_hash_entry *) h; |
6415 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6416 | return TRUE; |
e86ce104 | 6417 | |
4ce794b7 | 6418 | info = inf; |
65f38f15 | 6419 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6420 | if (htab == NULL) |
6421 | return FALSE; | |
5bd4f169 | 6422 | |
c09bdfe5 AM |
6423 | /* Resolve undefined references to dot-symbols as the value |
6424 | in the function descriptor, if we have one in a regular object. | |
6425 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6426 | in dynamic objects are handled elsewhere. */ | |
6427 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6428 | && fh->was_undefined | |
b31867b6 AM |
6429 | && (fdh = defined_func_desc (fh)) != NULL |
6430 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6431 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6432 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6433 | &fh->elf.root.u.def.section, |
aef36ac1 | 6434 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6435 | { |
b31867b6 | 6436 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6437 | fh->elf.forced_local = 1; |
b31867b6 AM |
6438 | fh->elf.def_regular = fdh->elf.def_regular; |
6439 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6440 | } |
6441 | ||
e86ce104 AM |
6442 | /* If this is a function code symbol, transfer dynamic linking |
6443 | information to the function descriptor symbol. */ | |
50bc7936 | 6444 | if (!fh->is_func) |
b34976b6 | 6445 | return TRUE; |
e86ce104 | 6446 | |
50bc7936 | 6447 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6448 | if (ent->plt.refcount > 0) |
6449 | break; | |
50bc7936 AM |
6450 | if (ent == NULL |
6451 | || fh->elf.root.root.string[0] != '.' | |
6452 | || fh->elf.root.root.string[1] == '\0') | |
6453 | return TRUE; | |
5bd4f169 | 6454 | |
50bc7936 AM |
6455 | /* Find the corresponding function descriptor symbol. Create it |
6456 | as undefined if necessary. */ | |
5bd4f169 | 6457 | |
b31867b6 | 6458 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6459 | if (fdh == NULL |
df131623 | 6460 | && !info->executable |
50bc7936 AM |
6461 | && (fh->elf.root.type == bfd_link_hash_undefined |
6462 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6463 | { | |
908b32fc | 6464 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6465 | if (fdh == NULL) |
6466 | return FALSE; | |
50bc7936 | 6467 | } |
648cca2c | 6468 | |
908b32fc | 6469 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6470 | code symbol is strong undefined, make the fake sym the same. |
6471 | If the function code symbol is defined, then force the fake | |
6472 | descriptor local; We can't support overriding of symbols in a | |
6473 | shared library on a fake descriptor. */ | |
908b32fc AM |
6474 | |
6475 | if (fdh != NULL | |
6476 | && fdh->fake | |
433817dd | 6477 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6478 | { |
433817dd AM |
6479 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6480 | { | |
6481 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6482 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6483 | } | |
6484 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6485 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6486 | { | |
6487 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6488 | } | |
908b32fc AM |
6489 | } |
6490 | ||
50bc7936 | 6491 | if (fdh != NULL |
f5385ebf | 6492 | && !fdh->elf.forced_local |
df131623 | 6493 | && (!info->executable |
f5385ebf AM |
6494 | || fdh->elf.def_dynamic |
6495 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6496 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6497 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6498 | { | |
6499 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6500 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6501 | return FALSE; |
f5385ebf AM |
6502 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6503 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6504 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6505 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6506 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6507 | { |
40d16e0b | 6508 | move_plt_plist (fh, fdh); |
f5385ebf | 6509 | fdh->elf.needs_plt = 1; |
e86ce104 | 6510 | } |
50bc7936 | 6511 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6512 | fdh->oh = fh; |
6513 | fh->oh = fdh; | |
e86ce104 AM |
6514 | } |
6515 | ||
50bc7936 AM |
6516 | /* Now that the info is on the function descriptor, clear the |
6517 | function code sym info. Any function code syms for which we | |
6518 | don't have a definition in a regular file, we force local. | |
6519 | This prevents a shared library from exporting syms that have | |
6520 | been imported from another library. Function code syms that | |
6521 | are really in the library we must leave global to prevent the | |
6522 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6523 | force_local = (!fh->elf.def_regular |
6524 | || fdh == NULL | |
6525 | || !fdh->elf.def_regular | |
6526 | || fdh->elf.forced_local); | |
50bc7936 AM |
6527 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6528 | ||
b34976b6 | 6529 | return TRUE; |
e86ce104 | 6530 | } |
40b8271b | 6531 | |
e86ce104 | 6532 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6533 | this hook to a) provide some gcc support functions, and b) transfer |
6534 | dynamic linking information gathered so far on function code symbol | |
6535 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6536 | |
b34976b6 | 6537 | static bfd_boolean |
4ce794b7 AM |
6538 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6539 | struct bfd_link_info *info) | |
e86ce104 AM |
6540 | { |
6541 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6542 | unsigned int i; |
27fc25a1 | 6543 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6544 | { |
6545 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6546 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6547 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6548 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6549 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6550 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6551 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6552 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6553 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6554 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6555 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6556 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6557 | }; | |
e86ce104 AM |
6558 | |
6559 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6560 | if (htab == NULL) |
6561 | return FALSE; | |
6562 | ||
5295321c AM |
6563 | if (!info->relocatable |
6564 | && htab->elf.hgot != NULL) | |
6565 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
c66bb0ee | 6566 | |
82bd7b59 AM |
6567 | if (htab->sfpr == NULL) |
6568 | /* We don't have any relocs. */ | |
b34976b6 | 6569 | return TRUE; |
82bd7b59 | 6570 | |
deb0e272 AM |
6571 | /* Provide any missing _save* and _rest* functions. */ |
6572 | htab->sfpr->size = 0; | |
27fc25a1 AM |
6573 | if (!info->relocatable) |
6574 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6575 | if (!sfpr_define (info, &funcs[i])) | |
6576 | return FALSE; | |
82bd7b59 | 6577 | |
4ce794b7 | 6578 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6579 | |
eea6121a | 6580 | if (htab->sfpr->size == 0) |
8423293d | 6581 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6582 | |
b34976b6 | 6583 | return TRUE; |
e86ce104 AM |
6584 | } |
6585 | ||
6586 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6587 | regular object. The current definition is in some section of the | |
6588 | dynamic object, but we're not including those sections. We have to | |
6589 | change the definition to something the rest of the link can | |
6590 | understand. */ | |
6591 | ||
b34976b6 | 6592 | static bfd_boolean |
4ce794b7 AM |
6593 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6594 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6595 | { |
6596 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6597 | asection *s; |
e86ce104 AM |
6598 | |
6599 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6600 | if (htab == NULL) |
6601 | return FALSE; | |
e86ce104 AM |
6602 | |
6603 | /* Deal with function syms. */ | |
6604 | if (h->type == STT_FUNC | |
e054468f | 6605 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6606 | || h->needs_plt) |
e86ce104 AM |
6607 | { |
6608 | /* Clear procedure linkage table information for any symbol that | |
6609 | won't need a .plt entry. */ | |
411e1bfb AM |
6610 | struct plt_entry *ent; |
6611 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6612 | if (ent->plt.refcount > 0) | |
6613 | break; | |
8387904d | 6614 | if (ent == NULL |
e054468f AM |
6615 | || (h->type != STT_GNU_IFUNC |
6616 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6617 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6618 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6619 | { |
411e1bfb | 6620 | h->plt.plist = NULL; |
f5385ebf | 6621 | h->needs_plt = 0; |
40b8271b | 6622 | } |
5bd4f169 | 6623 | } |
bbd7ec4a | 6624 | else |
411e1bfb | 6625 | h->plt.plist = NULL; |
5bd4f169 AM |
6626 | |
6627 | /* If this is a weak symbol, and there is a real definition, the | |
6628 | processor independent code will have arranged for us to see the | |
6629 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6630 | if (h->u.weakdef != NULL) |
5bd4f169 | 6631 | { |
f6e332e6 AM |
6632 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6633 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6634 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6635 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6636 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6637 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6638 | return TRUE; |
5bd4f169 AM |
6639 | } |
6640 | ||
5bd4f169 AM |
6641 | /* If we are creating a shared library, we must presume that the |
6642 | only references to the symbol are via the global offset table. | |
6643 | For such cases we need not do anything here; the relocations will | |
6644 | be handled correctly by relocate_section. */ | |
6645 | if (info->shared) | |
b34976b6 | 6646 | return TRUE; |
5bd4f169 | 6647 | |
65f38f15 AM |
6648 | /* If there are no references to this symbol that do not use the |
6649 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6650 | if (!h->non_got_ref) |
b34976b6 | 6651 | return TRUE; |
65f38f15 | 6652 | |
b186458a JJ |
6653 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6654 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6655 | return TRUE; | |
6656 | ||
f4656909 | 6657 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6658 | { |
f4656909 | 6659 | struct ppc_link_hash_entry * eh; |
6061a67d | 6660 | struct elf_dyn_relocs *p; |
65f38f15 | 6661 | |
f4656909 AM |
6662 | eh = (struct ppc_link_hash_entry *) h; |
6663 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6664 | { | |
6665 | s = p->sec->output_section; | |
6666 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6667 | break; | |
6668 | } | |
6669 | ||
6670 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6671 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6672 | if (p == NULL) | |
6673 | { | |
f5385ebf | 6674 | h->non_got_ref = 0; |
f4656909 AM |
6675 | return TRUE; |
6676 | } | |
65f38f15 AM |
6677 | } |
6678 | ||
5d35169e | 6679 | if (h->plt.plist != NULL) |
97b639ba AM |
6680 | { |
6681 | /* We should never get here, but unfortunately there are versions | |
6682 | of gcc out there that improperly (for this ABI) put initialized | |
6683 | function pointers, vtable refs and suchlike in read-only | |
6684 | sections. Allow them to proceed, but warn that this might | |
6685 | break at runtime. */ | |
25f53a85 | 6686 | info->callbacks->einfo |
bc30df16 | 6687 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 6688 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6689 | h->root.root.string); |
6690 | } | |
5d35169e AM |
6691 | |
6692 | /* This is a reference to a symbol defined by a dynamic object which | |
6693 | is not a function. */ | |
6694 | ||
5bd4f169 AM |
6695 | /* We must allocate the symbol in our .dynbss section, which will |
6696 | become part of the .bss section of the executable. There will be | |
6697 | an entry for this symbol in the .dynsym section. The dynamic | |
6698 | object will contain position independent code, so all references | |
6699 | from the dynamic object to this symbol will go through the global | |
6700 | offset table. The dynamic linker will use the .dynsym entry to | |
6701 | determine the address it must put in the global offset table, so | |
6702 | both the dynamic object and the regular object will refer to the | |
6703 | same memory location for the variable. */ | |
5bd4f169 | 6704 | |
04c9666a AM |
6705 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6706 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6707 | runtime process image. We need to remember the offset into the |
6708 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 6709 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6710 | { |
eea6121a | 6711 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6712 | h->needs_copy = 1; |
5bd4f169 AM |
6713 | } |
6714 | ||
4ce794b7 | 6715 | s = htab->dynbss; |
5bd4f169 | 6716 | |
027297b7 | 6717 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6718 | } |
6719 | ||
e86ce104 AM |
6720 | /* If given a function descriptor symbol, hide both the function code |
6721 | sym and the descriptor. */ | |
6722 | static void | |
4ce794b7 AM |
6723 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6724 | struct elf_link_hash_entry *h, | |
6725 | bfd_boolean force_local) | |
e86ce104 | 6726 | { |
34814b9f | 6727 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6728 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6729 | ||
34814b9f AM |
6730 | eh = (struct ppc_link_hash_entry *) h; |
6731 | if (eh->is_func_descriptor) | |
e86ce104 | 6732 | { |
34814b9f | 6733 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6734 | |
721956f4 | 6735 | if (fh == NULL) |
d1329ca3 AM |
6736 | { |
6737 | const char *p, *q; | |
6738 | struct ppc_link_hash_table *htab; | |
6739 | char save; | |
6740 | ||
6741 | /* We aren't supposed to use alloca in BFD because on | |
6742 | systems which do not have alloca the version in libiberty | |
6743 | calls xmalloc, which might cause the program to crash | |
6744 | when it runs out of memory. This function doesn't have a | |
6745 | return status, so there's no way to gracefully return an | |
6746 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6747 | accessed; It's either a string in an ELF string table, |
6748 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6749 | |
34814b9f | 6750 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6751 | save = *p; |
6752 | *(char *) p = '.'; | |
6753 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6754 | if (htab == NULL) |
6755 | return; | |
6756 | ||
34814b9f AM |
6757 | fh = (struct ppc_link_hash_entry *) |
6758 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6759 | *(char *) p = save; |
6760 | ||
6761 | /* Unfortunately, if it so happens that the string we were | |
6762 | looking for was allocated immediately before this string, | |
6763 | then we overwrote the string terminator. That's the only | |
6764 | reason the lookup should fail. */ | |
6765 | if (fh == NULL) | |
6766 | { | |
34814b9f AM |
6767 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6768 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6769 | --q, --p; |
34814b9f AM |
6770 | if (q < eh->elf.root.root.string && *p == '.') |
6771 | fh = (struct ppc_link_hash_entry *) | |
6772 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6773 | } |
6774 | if (fh != NULL) | |
6775 | { | |
34814b9f AM |
6776 | eh->oh = fh; |
6777 | fh->oh = eh; | |
d1329ca3 AM |
6778 | } |
6779 | } | |
e86ce104 | 6780 | if (fh != NULL) |
34814b9f | 6781 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6782 | } |
6783 | } | |
6784 | ||
411e1bfb | 6785 | static bfd_boolean |
8843416a AM |
6786 | get_sym_h (struct elf_link_hash_entry **hp, |
6787 | Elf_Internal_Sym **symp, | |
6788 | asection **symsecp, | |
f961d9dd | 6789 | unsigned char **tls_maskp, |
8843416a AM |
6790 | Elf_Internal_Sym **locsymsp, |
6791 | unsigned long r_symndx, | |
6792 | bfd *ibfd) | |
411e1bfb | 6793 | { |
0ffa91dd | 6794 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6795 | |
6796 | if (r_symndx >= symtab_hdr->sh_info) | |
6797 | { | |
6798 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6799 | struct elf_link_hash_entry *h; | |
6800 | ||
6801 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6802 | h = elf_follow_link (h); |
411e1bfb AM |
6803 | |
6804 | if (hp != NULL) | |
6805 | *hp = h; | |
6806 | ||
6807 | if (symp != NULL) | |
6808 | *symp = NULL; | |
6809 | ||
6810 | if (symsecp != NULL) | |
6811 | { | |
6812 | asection *symsec = NULL; | |
6813 | if (h->root.type == bfd_link_hash_defined | |
6814 | || h->root.type == bfd_link_hash_defweak) | |
6815 | symsec = h->root.u.def.section; | |
6816 | *symsecp = symsec; | |
6817 | } | |
6818 | ||
e7b938ca | 6819 | if (tls_maskp != NULL) |
411e1bfb AM |
6820 | { |
6821 | struct ppc_link_hash_entry *eh; | |
6822 | ||
6823 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6824 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6825 | } |
6826 | } | |
6827 | else | |
6828 | { | |
6829 | Elf_Internal_Sym *sym; | |
6830 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6831 | ||
6832 | if (locsyms == NULL) | |
6833 | { | |
6834 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6835 | if (locsyms == NULL) | |
6836 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6837 | symtab_hdr->sh_info, | |
6838 | 0, NULL, NULL, NULL); | |
6839 | if (locsyms == NULL) | |
6840 | return FALSE; | |
6841 | *locsymsp = locsyms; | |
6842 | } | |
6843 | sym = locsyms + r_symndx; | |
6844 | ||
6845 | if (hp != NULL) | |
6846 | *hp = NULL; | |
6847 | ||
6848 | if (symp != NULL) | |
6849 | *symp = sym; | |
6850 | ||
6851 | if (symsecp != NULL) | |
cb33740c | 6852 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6853 | |
e7b938ca | 6854 | if (tls_maskp != NULL) |
411e1bfb AM |
6855 | { |
6856 | struct got_entry **lgot_ents; | |
f961d9dd | 6857 | unsigned char *tls_mask; |
411e1bfb | 6858 | |
e7b938ca | 6859 | tls_mask = NULL; |
411e1bfb AM |
6860 | lgot_ents = elf_local_got_ents (ibfd); |
6861 | if (lgot_ents != NULL) | |
6862 | { | |
e054468f AM |
6863 | struct plt_entry **local_plt = (struct plt_entry **) |
6864 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6865 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6866 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6867 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6868 | } |
e7b938ca | 6869 | *tls_maskp = tls_mask; |
411e1bfb AM |
6870 | } |
6871 | } | |
6872 | return TRUE; | |
6873 | } | |
6874 | ||
e7b938ca | 6875 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6876 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6877 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6878 | |
6879 | static int | |
f961d9dd | 6880 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6881 | unsigned long *toc_symndx, |
6882 | bfd_vma *toc_addend, | |
0d4792f7 | 6883 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6884 | const Elf_Internal_Rela *rel, |
6885 | bfd *ibfd) | |
411e1bfb AM |
6886 | { |
6887 | unsigned long r_symndx; | |
0d4792f7 | 6888 | int next_r; |
411e1bfb AM |
6889 | struct elf_link_hash_entry *h; |
6890 | Elf_Internal_Sym *sym; | |
6891 | asection *sec; | |
6892 | bfd_vma off; | |
6893 | ||
6894 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6895 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6896 | return 0; |
411e1bfb | 6897 | |
e7b938ca | 6898 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6899 | || sec == NULL |
6bee8834 | 6900 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6901 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6902 | return 1; |
411e1bfb AM |
6903 | |
6904 | /* Look inside a TOC section too. */ | |
6905 | if (h != NULL) | |
6906 | { | |
6907 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6908 | off = h->root.u.def.value; | |
6909 | } | |
6910 | else | |
6911 | off = sym->st_value; | |
6912 | off += rel->r_addend; | |
6913 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6914 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6915 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6916 | if (toc_symndx != NULL) |
6917 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6918 | if (toc_addend != NULL) |
6919 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6920 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6921 | return 0; | |
854b41e7 | 6922 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6923 | && (next_r == -1 || next_r == -2)) |
6924 | return 1 - next_r; | |
951fd09b | 6925 | return 1; |
411e1bfb AM |
6926 | } |
6927 | ||
3b421ab3 AM |
6928 | /* Find (or create) an entry in the tocsave hash table. */ |
6929 | ||
6930 | static struct tocsave_entry * | |
6931 | tocsave_find (struct ppc_link_hash_table *htab, | |
6932 | enum insert_option insert, | |
6933 | Elf_Internal_Sym **local_syms, | |
6934 | const Elf_Internal_Rela *irela, | |
6935 | bfd *ibfd) | |
6936 | { | |
6937 | unsigned long r_indx; | |
6938 | struct elf_link_hash_entry *h; | |
6939 | Elf_Internal_Sym *sym; | |
6940 | struct tocsave_entry ent, *p; | |
6941 | hashval_t hash; | |
6942 | struct tocsave_entry **slot; | |
6943 | ||
6944 | r_indx = ELF64_R_SYM (irela->r_info); | |
6945 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6946 | return NULL; | |
6947 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6948 | { | |
6949 | (*_bfd_error_handler) | |
6950 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
6951 | return NULL; | |
6952 | } | |
6953 | ||
6954 | if (h != NULL) | |
6955 | ent.offset = h->root.u.def.value; | |
6956 | else | |
6957 | ent.offset = sym->st_value; | |
6958 | ent.offset += irela->r_addend; | |
6959 | ||
6960 | hash = tocsave_htab_hash (&ent); | |
6961 | slot = ((struct tocsave_entry **) | |
6962 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6963 | if (slot == NULL) | |
6964 | return NULL; | |
6965 | ||
6966 | if (*slot == NULL) | |
6967 | { | |
6968 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6969 | if (p == NULL) | |
6970 | return NULL; | |
6971 | *p = ent; | |
6972 | *slot = p; | |
6973 | } | |
6974 | return *slot; | |
6975 | } | |
6976 | ||
754021d0 | 6977 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6978 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6979 | |
6980 | static bfd_boolean | |
6981 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6982 | { | |
6983 | struct ppc_link_hash_entry *eh; | |
6984 | asection *sym_sec; | |
74f0fb50 | 6985 | struct _opd_sec_data *opd; |
754021d0 AM |
6986 | |
6987 | if (h->root.type == bfd_link_hash_indirect) | |
6988 | return TRUE; | |
6989 | ||
754021d0 AM |
6990 | if (h->root.type != bfd_link_hash_defined |
6991 | && h->root.type != bfd_link_hash_defweak) | |
6992 | return TRUE; | |
6993 | ||
6994 | eh = (struct ppc_link_hash_entry *) h; | |
6995 | if (eh->adjust_done) | |
6996 | return TRUE; | |
6997 | ||
6998 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6999 | opd = get_opd_info (sym_sec); |
7000 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7001 | { |
74f0fb50 | 7002 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
7003 | if (adjust == -1) |
7004 | { | |
7005 | /* This entry has been deleted. */ | |
b3fac117 | 7006 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7007 | if (dsec == NULL) |
7008 | { | |
7009 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7010 | if (discarded_section (dsec)) |
81688140 | 7011 | { |
b3fac117 | 7012 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7013 | break; |
7014 | } | |
7015 | } | |
4025353c | 7016 | eh->elf.root.u.def.value = 0; |
81688140 | 7017 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7018 | } |
7019 | else | |
7020 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7021 | eh->adjust_done = 1; |
7022 | } | |
7023 | return TRUE; | |
7024 | } | |
7025 | ||
8c1d1bb8 | 7026 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7027 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7028 | have already been determined. */ |
7029 | ||
7030 | static bfd_boolean | |
7031 | dec_dynrel_count (bfd_vma r_info, | |
7032 | asection *sec, | |
7033 | struct bfd_link_info *info, | |
7034 | Elf_Internal_Sym **local_syms, | |
7035 | struct elf_link_hash_entry *h, | |
19e08130 | 7036 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7037 | { |
7038 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7039 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7040 | |
7041 | /* Can this reloc be dynamic? This switch, and later tests here | |
7042 | should be kept in sync with the code in check_relocs. */ | |
7043 | r_type = ELF64_R_TYPE (r_info); | |
7044 | switch (r_type) | |
7045 | { | |
7046 | default: | |
7047 | return TRUE; | |
7048 | ||
7049 | case R_PPC64_TPREL16: | |
7050 | case R_PPC64_TPREL16_LO: | |
7051 | case R_PPC64_TPREL16_HI: | |
7052 | case R_PPC64_TPREL16_HA: | |
7053 | case R_PPC64_TPREL16_DS: | |
7054 | case R_PPC64_TPREL16_LO_DS: | |
7055 | case R_PPC64_TPREL16_HIGHER: | |
7056 | case R_PPC64_TPREL16_HIGHERA: | |
7057 | case R_PPC64_TPREL16_HIGHEST: | |
7058 | case R_PPC64_TPREL16_HIGHESTA: | |
7059 | if (!info->shared) | |
7060 | return TRUE; | |
7061 | ||
7062 | case R_PPC64_TPREL64: | |
7063 | case R_PPC64_DTPMOD64: | |
7064 | case R_PPC64_DTPREL64: | |
7065 | case R_PPC64_ADDR64: | |
7066 | case R_PPC64_REL30: | |
7067 | case R_PPC64_REL32: | |
7068 | case R_PPC64_REL64: | |
7069 | case R_PPC64_ADDR14: | |
7070 | case R_PPC64_ADDR14_BRNTAKEN: | |
7071 | case R_PPC64_ADDR14_BRTAKEN: | |
7072 | case R_PPC64_ADDR16: | |
7073 | case R_PPC64_ADDR16_DS: | |
7074 | case R_PPC64_ADDR16_HA: | |
7075 | case R_PPC64_ADDR16_HI: | |
7076 | case R_PPC64_ADDR16_HIGHER: | |
7077 | case R_PPC64_ADDR16_HIGHERA: | |
7078 | case R_PPC64_ADDR16_HIGHEST: | |
7079 | case R_PPC64_ADDR16_HIGHESTA: | |
7080 | case R_PPC64_ADDR16_LO: | |
7081 | case R_PPC64_ADDR16_LO_DS: | |
7082 | case R_PPC64_ADDR24: | |
7083 | case R_PPC64_ADDR32: | |
7084 | case R_PPC64_UADDR16: | |
7085 | case R_PPC64_UADDR32: | |
7086 | case R_PPC64_UADDR64: | |
7087 | case R_PPC64_TOC: | |
7088 | break; | |
7089 | } | |
7090 | ||
7091 | if (local_syms != NULL) | |
7092 | { | |
7093 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7094 | bfd *ibfd = sec->owner; |
7095 | ||
7096 | r_symndx = ELF64_R_SYM (r_info); | |
7097 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7098 | return FALSE; | |
7099 | } | |
7100 | ||
7101 | if ((info->shared | |
1d483afe | 7102 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7103 | || (h != NULL |
198f1157 | 7104 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7105 | || h->root.type == bfd_link_hash_defweak |
7106 | || !h->def_regular)))) | |
7107 | || (ELIMINATE_COPY_RELOCS | |
7108 | && !info->shared | |
7109 | && h != NULL | |
7110 | && (h->root.type == bfd_link_hash_defweak | |
7111 | || !h->def_regular))) | |
7112 | ; | |
7113 | else | |
7114 | return TRUE; | |
7115 | ||
7116 | if (h != NULL) | |
6edfbbad | 7117 | { |
19e08130 AM |
7118 | struct elf_dyn_relocs *p; |
7119 | struct elf_dyn_relocs **pp; | |
7120 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7121 | ||
7122 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7123 | with local syms for a given section. Also, symbol flags are | |
7124 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7125 | report a dynreloc miscount. */ | |
7126 | if (*pp == NULL && info->gc_sections) | |
7127 | return TRUE; | |
7128 | ||
7129 | while ((p = *pp) != NULL) | |
60124e18 | 7130 | { |
19e08130 AM |
7131 | if (p->sec == sec) |
7132 | { | |
7133 | if (!must_be_dyn_reloc (info, r_type)) | |
7134 | p->pc_count -= 1; | |
7135 | p->count -= 1; | |
7136 | if (p->count == 0) | |
7137 | *pp = p->next; | |
7138 | return TRUE; | |
7139 | } | |
7140 | pp = &p->next; | |
60124e18 | 7141 | } |
6edfbbad | 7142 | } |
19e08130 AM |
7143 | else |
7144 | { | |
7145 | struct ppc_dyn_relocs *p; | |
7146 | struct ppc_dyn_relocs **pp; | |
7147 | void *vpp; | |
7148 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7149 | |
19e08130 AM |
7150 | if (local_syms == NULL) |
7151 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7152 | if (sym_sec == NULL) | |
7153 | sym_sec = sec; | |
c57da1a7 | 7154 | |
19e08130 AM |
7155 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7156 | pp = (struct ppc_dyn_relocs **) vpp; | |
7157 | ||
7158 | if (*pp == NULL && info->gc_sections) | |
7159 | return TRUE; | |
7160 | ||
7161 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7162 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7163 | { |
19e08130 AM |
7164 | if (p->sec == sec && p->ifunc == is_ifunc) |
7165 | { | |
7166 | p->count -= 1; | |
7167 | if (p->count == 0) | |
7168 | *pp = p->next; | |
7169 | return TRUE; | |
7170 | } | |
7171 | pp = &p->next; | |
8c1d1bb8 | 7172 | } |
8c1d1bb8 AM |
7173 | } |
7174 | ||
8de848d8 | 7175 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7176 | sec->owner, sec); |
8c1d1bb8 AM |
7177 | bfd_set_error (bfd_error_bad_value); |
7178 | return FALSE; | |
7179 | } | |
7180 | ||
754021d0 AM |
7181 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7182 | only remove those associated with functions in discarded link-once | |
7183 | sections, or weakly defined functions that have been overridden. It | |
7184 | would be possible to remove many more entries for statically linked | |
7185 | applications. */ | |
7186 | ||
b34976b6 | 7187 | bfd_boolean |
33c0ec9d | 7188 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
7189 | { |
7190 | bfd *ibfd; | |
754021d0 | 7191 | bfd_boolean some_edited = FALSE; |
3f764659 | 7192 | asection *need_pad = NULL; |
1e2f5b6e | 7193 | |
411e1bfb | 7194 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7195 | { |
7196 | asection *sec; | |
7197 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7198 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7199 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7200 | bfd_vma offset; |
74f0fb50 | 7201 | struct _opd_sec_data *opd; |
3f764659 JJ |
7202 | bfd_boolean need_edit, add_aux_fields; |
7203 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7204 | |
854b41e7 AM |
7205 | if (!is_ppc64_elf (ibfd)) |
7206 | continue; | |
7207 | ||
1e2f5b6e | 7208 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7209 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7210 | continue; |
7211 | ||
dbaa2011 | 7212 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7213 | continue; |
7214 | ||
1e2f5b6e AM |
7215 | if (sec->output_section == bfd_abs_section_ptr) |
7216 | continue; | |
7217 | ||
7218 | /* Look through the section relocs. */ | |
7219 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7220 | continue; | |
7221 | ||
6cdc0ccc | 7222 | local_syms = NULL; |
0ffa91dd | 7223 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7224 | |
7225 | /* Read the relocations. */ | |
4ce794b7 | 7226 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7227 | info->keep_memory); |
1e2f5b6e | 7228 | if (relstart == NULL) |
b34976b6 | 7229 | return FALSE; |
1e2f5b6e AM |
7230 | |
7231 | /* First run through the relocs to check they are sane, and to | |
7232 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7233 | need_edit = FALSE; |
3f764659 | 7234 | need_pad = sec; |
1e2f5b6e AM |
7235 | offset = 0; |
7236 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7237 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7238 | { |
04c9666a | 7239 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7240 | unsigned long r_symndx; |
7241 | asection *sym_sec; | |
7242 | struct elf_link_hash_entry *h; | |
7243 | Elf_Internal_Sym *sym; | |
7244 | ||
3f764659 | 7245 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7246 | only interested in the reloc pointing to a function entry |
7247 | point. */ | |
50bc7936 AM |
7248 | if (rel->r_offset != offset |
7249 | || rel + 1 >= relend | |
7250 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7251 | { |
7252 | /* If someone messes with .opd alignment then after a | |
7253 | "ld -r" we might have padding in the middle of .opd. | |
7254 | Also, there's nothing to prevent someone putting | |
7255 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7256 | optimization for them! */ |
3f764659 | 7257 | broken_opd: |
1e2f5b6e | 7258 | (*_bfd_error_handler) |
d003868e | 7259 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7260 | need_edit = FALSE; |
1e2f5b6e AM |
7261 | break; |
7262 | } | |
7263 | ||
50bc7936 AM |
7264 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7265 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7266 | { | |
7267 | (*_bfd_error_handler) | |
d003868e AM |
7268 | (_("%B: unexpected reloc type %u in .opd section"), |
7269 | ibfd, r_type); | |
50bc7936 AM |
7270 | need_edit = FALSE; |
7271 | break; | |
7272 | } | |
7273 | ||
1e2f5b6e | 7274 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7275 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7276 | r_symndx, ibfd)) | |
50bc7936 | 7277 | goto error_ret; |
1e2f5b6e AM |
7278 | |
7279 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7280 | { | |
411e1bfb AM |
7281 | const char *sym_name; |
7282 | if (h != NULL) | |
7283 | sym_name = h->root.root.string; | |
7284 | else | |
26c61ae5 L |
7285 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7286 | sym_sec); | |
411e1bfb | 7287 | |
1e2f5b6e | 7288 | (*_bfd_error_handler) |
d003868e AM |
7289 | (_("%B: undefined sym `%s' in .opd section"), |
7290 | ibfd, sym_name); | |
b34976b6 | 7291 | need_edit = FALSE; |
1e2f5b6e AM |
7292 | break; |
7293 | } | |
7294 | ||
51020317 AM |
7295 | /* opd entries are always for functions defined in the |
7296 | current input bfd. If the symbol isn't defined in the | |
7297 | input bfd, then we won't be using the function in this | |
7298 | bfd; It must be defined in a linkonce section in another | |
7299 | bfd, or is weak. It's also possible that we are | |
7300 | discarding the function due to a linker script /DISCARD/, | |
7301 | which we test for via the output_section. */ | |
7302 | if (sym_sec->owner != ibfd | |
7303 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7304 | need_edit = TRUE; |
1e2f5b6e | 7305 | |
50bc7936 | 7306 | rel += 2; |
3f764659 JJ |
7307 | if (rel == relend |
7308 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7309 | { | |
7310 | if (sec->size == offset + 24) | |
7311 | { | |
7312 | need_pad = NULL; | |
7313 | break; | |
7314 | } | |
7315 | if (rel == relend && sec->size == offset + 16) | |
7316 | { | |
7317 | cnt_16b++; | |
7318 | break; | |
7319 | } | |
7320 | goto broken_opd; | |
7321 | } | |
7322 | ||
7323 | if (rel->r_offset == offset + 24) | |
7324 | offset += 24; | |
7325 | else if (rel->r_offset != offset + 16) | |
7326 | goto broken_opd; | |
7327 | else if (rel + 1 < relend | |
7328 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7329 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7330 | { | |
7331 | offset += 16; | |
7332 | cnt_16b++; | |
7333 | } | |
7334 | else if (rel + 2 < relend | |
7335 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7336 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7337 | { | |
7338 | offset += 24; | |
7339 | rel += 1; | |
7340 | } | |
7341 | else | |
7342 | goto broken_opd; | |
1e2f5b6e AM |
7343 | } |
7344 | ||
3f764659 JJ |
7345 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7346 | ||
7347 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7348 | { |
7349 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7350 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7351 | bfd_byte *rptr, *wptr; |
983bddc8 | 7352 | bfd_byte *new_contents; |
b34976b6 | 7353 | bfd_boolean skip; |
3f764659 | 7354 | long opd_ent_size; |
74f0fb50 AM |
7355 | bfd_size_type amt; |
7356 | ||
983bddc8 | 7357 | new_contents = NULL; |
74f0fb50 AM |
7358 | amt = sec->size * sizeof (long) / 8; |
7359 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7360 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7361 | if (opd->adjust == NULL) |
7362 | return FALSE; | |
7363 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7364 | |
7365 | /* This seems a waste of time as input .opd sections are all | |
7366 | zeros as generated by gcc, but I suppose there's no reason | |
7367 | this will always be so. We might start putting something in | |
7368 | the third word of .opd entries. */ | |
7369 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7370 | { | |
eea6121a AM |
7371 | bfd_byte *loc; |
7372 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7373 | { |
eea6121a AM |
7374 | if (loc != NULL) |
7375 | free (loc); | |
50bc7936 | 7376 | error_ret: |
6cdc0ccc AM |
7377 | if (local_syms != NULL |
7378 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7379 | free (local_syms); | |
6cdc0ccc AM |
7380 | if (elf_section_data (sec)->relocs != relstart) |
7381 | free (relstart); | |
b34976b6 | 7382 | return FALSE; |
6cdc0ccc | 7383 | } |
1e2f5b6e AM |
7384 | sec->contents = loc; |
7385 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7386 | } | |
7387 | ||
7388 | elf_section_data (sec)->relocs = relstart; | |
7389 | ||
3f764659 | 7390 | new_contents = sec->contents; |
3f764659 JJ |
7391 | if (add_aux_fields) |
7392 | { | |
7393 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7394 | if (new_contents == NULL) | |
7395 | return FALSE; | |
7396 | need_pad = FALSE; | |
3f764659 | 7397 | } |
b4f4e59f AM |
7398 | wptr = new_contents; |
7399 | rptr = sec->contents; | |
3f764659 | 7400 | |
1e2f5b6e | 7401 | write_rel = relstart; |
b34976b6 | 7402 | skip = FALSE; |
1e2f5b6e | 7403 | offset = 0; |
3f764659 | 7404 | opd_ent_size = 0; |
1e2f5b6e AM |
7405 | for (rel = relstart; rel < relend; rel++) |
7406 | { | |
50bc7936 AM |
7407 | unsigned long r_symndx; |
7408 | asection *sym_sec; | |
7409 | struct elf_link_hash_entry *h; | |
7410 | Elf_Internal_Sym *sym; | |
7411 | ||
7412 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7413 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7414 | r_symndx, ibfd)) |
50bc7936 AM |
7415 | goto error_ret; |
7416 | ||
1e2f5b6e AM |
7417 | if (rel->r_offset == offset) |
7418 | { | |
50bc7936 | 7419 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7420 | |
7421 | /* See if the .opd entry is full 24 byte or | |
7422 | 16 byte (with fd_aux entry overlapped with next | |
7423 | fd_func). */ | |
7424 | opd_ent_size = 24; | |
7425 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7426 | || (rel + 3 < relend | |
7427 | && rel[2].r_offset == offset + 16 | |
7428 | && rel[3].r_offset == offset + 24 | |
7429 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7430 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7431 | opd_ent_size = 16; | |
7432 | ||
4025353c AM |
7433 | if (h != NULL |
7434 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7435 | { |
4dfe6ac6 NC |
7436 | struct ppc_link_hash_table *htab; |
7437 | ||
7438 | htab = ppc_hash_table (info); | |
7439 | if (htab != NULL) | |
7440 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7441 | htab); | |
c4f68ce3 AM |
7442 | if (fdh != NULL |
7443 | && fdh->elf.root.type != bfd_link_hash_defined | |
7444 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7445 | fdh = NULL; | |
7446 | } | |
1e2f5b6e | 7447 | |
51020317 AM |
7448 | skip = (sym_sec->owner != ibfd |
7449 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7450 | if (skip) |
7451 | { | |
4025353c | 7452 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7453 | { |
7454 | /* Arrange for the function descriptor sym | |
7455 | to be dropped. */ | |
d6fe2dc1 AM |
7456 | fdh->elf.root.u.def.value = 0; |
7457 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7458 | } |
74f0fb50 | 7459 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7460 | } |
7461 | else | |
1e2f5b6e AM |
7462 | { |
7463 | /* We'll be keeping this opd entry. */ | |
7464 | ||
4025353c | 7465 | if (fdh != NULL) |
1e2f5b6e | 7466 | { |
754021d0 AM |
7467 | /* Redefine the function descriptor symbol to |
7468 | this location in the opd section. It is | |
7469 | necessary to update the value here rather | |
7470 | than using an array of adjustments as we do | |
7471 | for local symbols, because various places | |
7472 | in the generic ELF code use the value | |
7473 | stored in u.def.value. */ | |
3f764659 | 7474 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7475 | fdh->adjust_done = 1; |
1e2f5b6e | 7476 | } |
754021d0 AM |
7477 | |
7478 | /* Local syms are a bit tricky. We could | |
7479 | tweak them as they can be cached, but | |
7480 | we'd need to look through the local syms | |
7481 | for the function descriptor sym which we | |
7482 | don't have at the moment. So keep an | |
7483 | array of adjustments. */ | |
74f0fb50 | 7484 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7485 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7486 | |
7487 | if (wptr != rptr) | |
3f764659 JJ |
7488 | memcpy (wptr, rptr, opd_ent_size); |
7489 | wptr += opd_ent_size; | |
7490 | if (add_aux_fields && opd_ent_size == 16) | |
7491 | { | |
7492 | memset (wptr, '\0', 8); | |
7493 | wptr += 8; | |
7494 | } | |
1e2f5b6e | 7495 | } |
3f764659 JJ |
7496 | rptr += opd_ent_size; |
7497 | offset += opd_ent_size; | |
1e2f5b6e AM |
7498 | } |
7499 | ||
50bc7936 AM |
7500 | if (skip) |
7501 | { | |
60124e18 AM |
7502 | if (!NO_OPD_RELOCS |
7503 | && !info->relocatable | |
18d944df | 7504 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7505 | NULL, h, sym)) |
8c1d1bb8 | 7506 | goto error_ret; |
50bc7936 AM |
7507 | } |
7508 | else | |
1e2f5b6e | 7509 | { |
50bc7936 AM |
7510 | /* We need to adjust any reloc offsets to point to the |
7511 | new opd entries. While we're at it, we may as well | |
7512 | remove redundant relocs. */ | |
74f0fb50 | 7513 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7514 | if (write_rel != rel) |
7515 | memcpy (write_rel, rel, sizeof (*rel)); | |
7516 | ++write_rel; | |
7517 | } | |
7518 | } | |
7519 | ||
3f764659 | 7520 | sec->size = wptr - new_contents; |
1e2f5b6e | 7521 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7522 | if (add_aux_fields) |
7523 | { | |
7524 | free (sec->contents); | |
7525 | sec->contents = new_contents; | |
7526 | } | |
7527 | ||
05bf9422 | 7528 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7529 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7530 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7531 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7532 | some_edited = TRUE; |
1e2f5b6e | 7533 | } |
6cdc0ccc | 7534 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7535 | free (relstart); |
6cdc0ccc | 7536 | |
411e1bfb AM |
7537 | if (local_syms != NULL |
7538 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7539 | { | |
7540 | if (!info->keep_memory) | |
7541 | free (local_syms); | |
7542 | else | |
7543 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7544 | } | |
7545 | } | |
7546 | ||
754021d0 AM |
7547 | if (some_edited) |
7548 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7549 | ||
3f764659 JJ |
7550 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7551 | long, add a 8 byte padding after it. */ | |
7552 | if (need_pad != NULL && !info->relocatable) | |
7553 | { | |
7554 | bfd_byte *p; | |
7555 | ||
7556 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7557 | { | |
7558 | BFD_ASSERT (need_pad->size > 0); | |
7559 | ||
7560 | p = bfd_malloc (need_pad->size + 8); | |
7561 | if (p == NULL) | |
7562 | return FALSE; | |
699733f6 | 7563 | |
3f764659 JJ |
7564 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7565 | p, 0, need_pad->size)) | |
7566 | return FALSE; | |
7567 | ||
7568 | need_pad->contents = p; | |
7569 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7570 | } | |
7571 | else | |
7572 | { | |
7573 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7574 | if (p == NULL) | |
7575 | return FALSE; | |
7576 | ||
7577 | need_pad->contents = p; | |
7578 | } | |
7579 | ||
7580 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7581 | need_pad->size += 8; | |
7582 | } | |
7583 | ||
411e1bfb AM |
7584 | return TRUE; |
7585 | } | |
7586 | ||
e1918d23 | 7587 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7588 | |
e1918d23 | 7589 | asection * |
33c0ec9d AM |
7590 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7591 | int no_tls_get_addr_opt, | |
7592 | int *no_multi_toc) | |
411e1bfb | 7593 | { |
411e1bfb AM |
7594 | struct ppc_link_hash_table *htab; |
7595 | ||
411e1bfb | 7596 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7597 | if (htab == NULL) |
7598 | return NULL; | |
7599 | ||
33c0ec9d AM |
7600 | if (*no_multi_toc) |
7601 | htab->do_multi_toc = 0; | |
7602 | else if (!htab->do_multi_toc) | |
7603 | *no_multi_toc = 1; | |
7604 | ||
3a71aa26 AM |
7605 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7606 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7607 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7608 | /* Move dynamic linking info to the function descriptor sym. */ |
7609 | if (htab->tls_get_addr != NULL) | |
7610 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7611 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7612 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7613 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7614 | if (!no_tls_get_addr_opt) |
7615 | { | |
7616 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7617 | ||
7618 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7619 | FALSE, FALSE, TRUE); | |
7620 | if (opt != NULL) | |
7621 | func_desc_adjust (opt, info); | |
7622 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7623 | FALSE, FALSE, TRUE); | |
7624 | if (opt_fd != NULL | |
7625 | && (opt_fd->root.type == bfd_link_hash_defined | |
7626 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7627 | { | |
7628 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7629 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7630 | be calling __tls_get_addr via a plt call stub, then | |
7631 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7632 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7633 | if (htab->elf.dynamic_sections_created | |
7634 | && tga_fd != NULL | |
7635 | && (tga_fd->type == STT_FUNC | |
7636 | || tga_fd->needs_plt) | |
7637 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7638 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7639 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7640 | { | |
7641 | struct plt_entry *ent; | |
7642 | ||
7643 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7644 | if (ent->plt.refcount > 0) | |
7645 | break; | |
7646 | if (ent != NULL) | |
7647 | { | |
7648 | tga_fd->root.type = bfd_link_hash_indirect; | |
7649 | tga_fd->root.u.i.link = &opt_fd->root; | |
7650 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7651 | if (opt_fd->dynindx != -1) | |
7652 | { | |
7653 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7654 | opt_fd->dynindx = -1; | |
7655 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7656 | opt_fd->dynstr_index); | |
7657 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7658 | return NULL; |
a7f2871e AM |
7659 | } |
7660 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7661 | tga = &htab->tls_get_addr->elf; | |
7662 | if (opt != NULL && tga != NULL) | |
7663 | { | |
7664 | tga->root.type = bfd_link_hash_indirect; | |
7665 | tga->root.u.i.link = &opt->root; | |
7666 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7667 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7668 | tga->forced_local); | |
7669 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7670 | } | |
7671 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7672 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7673 | if (htab->tls_get_addr != NULL) | |
7674 | { | |
7675 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7676 | htab->tls_get_addr->is_func = 1; | |
7677 | } | |
7678 | } | |
7679 | } | |
7680 | } | |
7681 | else | |
7682 | no_tls_get_addr_opt = TRUE; | |
7683 | } | |
7684 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 7685 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7686 | } |
8387904d | 7687 | |
3a71aa26 AM |
7688 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7689 | HASH1 or HASH2. */ | |
8387904d | 7690 | |
3a71aa26 AM |
7691 | static bfd_boolean |
7692 | branch_reloc_hash_match (const bfd *ibfd, | |
7693 | const Elf_Internal_Rela *rel, | |
7694 | const struct ppc_link_hash_entry *hash1, | |
7695 | const struct ppc_link_hash_entry *hash2) | |
7696 | { | |
7697 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7698 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7699 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7700 | ||
e054468f | 7701 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7702 | { |
3a71aa26 AM |
7703 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7704 | struct elf_link_hash_entry *h; | |
8387904d | 7705 | |
3a71aa26 | 7706 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7707 | h = elf_follow_link (h); |
3a71aa26 AM |
7708 | if (h == &hash1->elf || h == &hash2->elf) |
7709 | return TRUE; | |
a48ebf4d | 7710 | } |
3a71aa26 | 7711 | return FALSE; |
951fd09b | 7712 | } |
411e1bfb | 7713 | |
951fd09b AM |
7714 | /* Run through all the TLS relocs looking for optimization |
7715 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7716 | a preliminary section layout so that we know the TLS segment | |
7717 | offsets. We can't optimize earlier because some optimizations need | |
7718 | to know the tp offset, and we need to optimize before allocating | |
7719 | dynamic relocations. */ | |
7720 | ||
7721 | bfd_boolean | |
33c0ec9d | 7722 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7723 | { |
7724 | bfd *ibfd; | |
7725 | asection *sec; | |
7726 | struct ppc_link_hash_table *htab; | |
663a1470 | 7727 | unsigned char *toc_ref; |
102890f0 | 7728 | int pass; |
951fd09b | 7729 | |
1d483afe | 7730 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7731 | return TRUE; |
7732 | ||
951fd09b | 7733 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7734 | if (htab == NULL) |
7735 | return FALSE; | |
7736 | ||
663a1470 AM |
7737 | /* Make two passes over the relocs. On the first pass, mark toc |
7738 | entries involved with tls relocs, and check that tls relocs | |
7739 | involved in setting up a tls_get_addr call are indeed followed by | |
7740 | such a call. If they are not, we can't do any tls optimization. | |
7741 | On the second pass twiddle tls_mask flags to notify | |
7742 | relocate_section that optimization can be done, and adjust got | |
7743 | and plt refcounts. */ | |
7744 | toc_ref = NULL; | |
7745 | for (pass = 0; pass < 2; ++pass) | |
7746 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7747 | { | |
7748 | Elf_Internal_Sym *locsyms = NULL; | |
7749 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7750 | ||
102890f0 AM |
7751 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7752 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7753 | { | |
7754 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7755 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7756 | |
102890f0 AM |
7757 | /* Read the relocations. */ |
7758 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7759 | info->keep_memory); | |
7760 | if (relstart == NULL) | |
7761 | return FALSE; | |
411e1bfb | 7762 | |
102890f0 AM |
7763 | relend = relstart + sec->reloc_count; |
7764 | for (rel = relstart; rel < relend; rel++) | |
7765 | { | |
7766 | enum elf_ppc64_reloc_type r_type; | |
7767 | unsigned long r_symndx; | |
7768 | struct elf_link_hash_entry *h; | |
7769 | Elf_Internal_Sym *sym; | |
7770 | asection *sym_sec; | |
f961d9dd AM |
7771 | unsigned char *tls_mask; |
7772 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7773 | bfd_vma value; |
7774 | bfd_boolean ok_tprel, is_local; | |
7775 | long toc_ref_index = 0; | |
7776 | int expecting_tls_get_addr = 0; | |
663a1470 | 7777 | bfd_boolean ret = FALSE; |
411e1bfb | 7778 | |
102890f0 AM |
7779 | r_symndx = ELF64_R_SYM (rel->r_info); |
7780 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7781 | r_symndx, ibfd)) | |
7782 | { | |
7783 | err_free_rel: | |
7784 | if (elf_section_data (sec)->relocs != relstart) | |
7785 | free (relstart); | |
7786 | if (toc_ref != NULL) | |
7787 | free (toc_ref); | |
7788 | if (locsyms != NULL | |
0ffa91dd | 7789 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7790 | != (unsigned char *) locsyms)) |
7791 | free (locsyms); | |
663a1470 | 7792 | return ret; |
102890f0 | 7793 | } |
411e1bfb | 7794 | |
102890f0 AM |
7795 | if (h != NULL) |
7796 | { | |
766bc656 AM |
7797 | if (h->root.type == bfd_link_hash_defined |
7798 | || h->root.type == bfd_link_hash_defweak) | |
7799 | value = h->root.u.def.value; | |
7800 | else if (h->root.type == bfd_link_hash_undefweak) | |
7801 | value = 0; | |
7802 | else | |
663a1470 AM |
7803 | { |
7804 | found_tls_get_addr_arg = 0; | |
7805 | continue; | |
7806 | } | |
102890f0 AM |
7807 | } |
7808 | else | |
7809 | /* Symbols referenced by TLS relocs must be of type | |
7810 | STT_TLS. So no need for .opd local sym adjust. */ | |
7811 | value = sym->st_value; | |
7812 | ||
7813 | ok_tprel = FALSE; | |
7814 | is_local = FALSE; | |
7815 | if (h == NULL | |
7816 | || !h->def_dynamic) | |
7817 | { | |
7818 | is_local = TRUE; | |
766bc656 AM |
7819 | if (h != NULL |
7820 | && h->root.type == bfd_link_hash_undefweak) | |
7821 | ok_tprel = TRUE; | |
7822 | else | |
7823 | { | |
7824 | value += sym_sec->output_offset; | |
7825 | value += sym_sec->output_section->vma; | |
7826 | value -= htab->elf.tls_sec->vma; | |
7827 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7828 | < (bfd_vma) 1 << 32); | |
7829 | } | |
102890f0 | 7830 | } |
951fd09b | 7831 | |
102890f0 | 7832 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7833 | /* If this section has old-style __tls_get_addr calls |
7834 | without marker relocs, then check that each | |
7835 | __tls_get_addr call reloc is preceded by a reloc | |
7836 | that conceivably belongs to the __tls_get_addr arg | |
7837 | setup insn. If we don't find matching arg setup | |
7838 | relocs, don't do any tls optimization. */ | |
7839 | if (pass == 0 | |
7840 | && sec->has_tls_get_addr_call | |
7841 | && h != NULL | |
7842 | && (h == &htab->tls_get_addr->elf | |
7843 | || h == &htab->tls_get_addr_fd->elf) | |
7844 | && !found_tls_get_addr_arg | |
7845 | && is_branch_reloc (r_type)) | |
7846 | { | |
25f53a85 | 7847 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7848 | "TLS optimization disabled\n"), |
7849 | ibfd, sec, rel->r_offset); | |
7850 | ret = TRUE; | |
7851 | goto err_free_rel; | |
7852 | } | |
7853 | ||
7854 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7855 | switch (r_type) |
7856 | { | |
7857 | case R_PPC64_GOT_TLSLD16: | |
7858 | case R_PPC64_GOT_TLSLD16_LO: | |
7859 | expecting_tls_get_addr = 1; | |
663a1470 | 7860 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7861 | /* Fall thru */ |
7862 | ||
7863 | case R_PPC64_GOT_TLSLD16_HI: | |
7864 | case R_PPC64_GOT_TLSLD16_HA: | |
7865 | /* These relocs should never be against a symbol | |
7866 | defined in a shared lib. Leave them alone if | |
7867 | that turns out to be the case. */ | |
7868 | if (!is_local) | |
7869 | continue; | |
411e1bfb | 7870 | |
102890f0 | 7871 | /* LD -> LE */ |
411e1bfb | 7872 | tls_set = 0; |
102890f0 AM |
7873 | tls_clear = TLS_LD; |
7874 | tls_type = TLS_TLS | TLS_LD; | |
7875 | break; | |
411e1bfb | 7876 | |
102890f0 AM |
7877 | case R_PPC64_GOT_TLSGD16: |
7878 | case R_PPC64_GOT_TLSGD16_LO: | |
7879 | expecting_tls_get_addr = 1; | |
663a1470 | 7880 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7881 | /* Fall thru */ |
7882 | ||
7883 | case R_PPC64_GOT_TLSGD16_HI: | |
7884 | case R_PPC64_GOT_TLSGD16_HA: | |
7885 | if (ok_tprel) | |
7886 | /* GD -> LE */ | |
411e1bfb | 7887 | tls_set = 0; |
102890f0 AM |
7888 | else |
7889 | /* GD -> IE */ | |
7890 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7891 | tls_clear = TLS_GD; | |
7892 | tls_type = TLS_TLS | TLS_GD; | |
7893 | break; | |
7894 | ||
7895 | case R_PPC64_GOT_TPREL16_DS: | |
7896 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7897 | case R_PPC64_GOT_TPREL16_HI: | |
7898 | case R_PPC64_GOT_TPREL16_HA: | |
7899 | if (ok_tprel) | |
7900 | { | |
7901 | /* IE -> LE */ | |
7902 | tls_set = 0; | |
7903 | tls_clear = TLS_TPREL; | |
7904 | tls_type = TLS_TLS | TLS_TPREL; | |
7905 | break; | |
7906 | } | |
411e1bfb AM |
7907 | continue; |
7908 | ||
727fc41e AM |
7909 | case R_PPC64_TLSGD: |
7910 | case R_PPC64_TLSLD: | |
663a1470 AM |
7911 | found_tls_get_addr_arg = 1; |
7912 | /* Fall thru */ | |
7913 | ||
7914 | case R_PPC64_TLS: | |
7915 | case R_PPC64_TOC16: | |
7916 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7917 | if (sym_sec == NULL || sym_sec != toc) |
7918 | continue; | |
7919 | ||
7920 | /* Mark this toc entry as referenced by a TLS | |
7921 | code sequence. We can do that now in the | |
7922 | case of R_PPC64_TLS, and after checking for | |
7923 | tls_get_addr for the TOC16 relocs. */ | |
7924 | if (toc_ref == NULL) | |
663a1470 AM |
7925 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
7926 | if (toc_ref == NULL) | |
7927 | goto err_free_rel; | |
7928 | ||
102890f0 AM |
7929 | if (h != NULL) |
7930 | value = h->root.u.def.value; | |
7931 | else | |
7932 | value = sym->st_value; | |
7933 | value += rel->r_addend; | |
7934 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 7935 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7936 | if (r_type == R_PPC64_TLS |
7937 | || r_type == R_PPC64_TLSGD | |
7938 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7939 | { |
7940 | toc_ref[toc_ref_index] = 1; | |
7941 | continue; | |
7942 | } | |
7943 | ||
7944 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7945 | continue; | |
7946 | ||
7947 | tls_set = 0; | |
7948 | tls_clear = 0; | |
7949 | expecting_tls_get_addr = 2; | |
7950 | break; | |
7951 | ||
7952 | case R_PPC64_TPREL64: | |
7953 | if (pass == 0 | |
7954 | || sec != toc | |
7955 | || toc_ref == NULL | |
663a1470 | 7956 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7957 | continue; |
7958 | if (ok_tprel) | |
7959 | { | |
7960 | /* IE -> LE */ | |
7961 | tls_set = TLS_EXPLICIT; | |
7962 | tls_clear = TLS_TPREL; | |
7963 | break; | |
7964 | } | |
7965 | continue; | |
7966 | ||
7967 | case R_PPC64_DTPMOD64: | |
7968 | if (pass == 0 | |
7969 | || sec != toc | |
7970 | || toc_ref == NULL | |
663a1470 | 7971 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7972 | continue; |
7973 | if (rel + 1 < relend | |
7974 | && (rel[1].r_info | |
7975 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7976 | && rel[1].r_offset == rel->r_offset + 8) | |
7977 | { | |
7978 | if (ok_tprel) | |
7979 | /* GD -> LE */ | |
7980 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7981 | else | |
7982 | /* GD -> IE */ | |
7983 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7984 | tls_clear = TLS_GD; | |
7985 | } | |
7986 | else | |
7987 | { | |
7988 | if (!is_local) | |
7989 | continue; | |
7990 | ||
7991 | /* LD -> LE */ | |
7992 | tls_set = TLS_EXPLICIT; | |
7993 | tls_clear = TLS_LD; | |
7994 | } | |
7995 | break; | |
7996 | ||
7997 | default: | |
7998 | continue; | |
7999 | } | |
8000 | ||
8001 | if (pass == 0) | |
8002 | { | |
727fc41e AM |
8003 | if (!expecting_tls_get_addr |
8004 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8005 | continue; |
8006 | ||
3a71aa26 AM |
8007 | if (rel + 1 < relend |
8008 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8009 | htab->tls_get_addr, | |
8010 | htab->tls_get_addr_fd)) | |
102890f0 | 8011 | { |
3a71aa26 | 8012 | if (expecting_tls_get_addr == 2) |
102890f0 | 8013 | { |
3a71aa26 | 8014 | /* Check for toc tls entries. */ |
f961d9dd | 8015 | unsigned char *toc_tls; |
3a71aa26 AM |
8016 | int retval; |
8017 | ||
8018 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8019 | &locsyms, | |
8020 | rel, ibfd); | |
8021 | if (retval == 0) | |
8022 | goto err_free_rel; | |
663a1470 AM |
8023 | if (toc_tls != NULL) |
8024 | { | |
8025 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8026 | found_tls_get_addr_arg = 1; | |
8027 | if (retval > 1) | |
8028 | toc_ref[toc_ref_index] = 1; | |
8029 | } | |
102890f0 | 8030 | } |
3a71aa26 | 8031 | continue; |
102890f0 AM |
8032 | } |
8033 | ||
8034 | if (expecting_tls_get_addr != 1) | |
8035 | continue; | |
8036 | ||
8037 | /* Uh oh, we didn't find the expected call. We | |
8038 | could just mark this symbol to exclude it | |
8039 | from tls optimization but it's safer to skip | |
663a1470 | 8040 | the entire optimization. */ |
25f53a85 | 8041 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8042 | "TLS optimization disabled\n"), |
8043 | ibfd, sec, rel->r_offset); | |
8044 | ret = TRUE; | |
8045 | goto err_free_rel; | |
102890f0 AM |
8046 | } |
8047 | ||
85f7a9cb | 8048 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8049 | { |
8050 | struct plt_entry *ent; | |
8051 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8052 | ent != NULL; | |
8053 | ent = ent->next) | |
8054 | if (ent->addend == 0) | |
411e1bfb | 8055 | { |
102890f0 | 8056 | if (ent->plt.refcount > 0) |
30038c59 | 8057 | { |
102890f0 AM |
8058 | ent->plt.refcount -= 1; |
8059 | expecting_tls_get_addr = 0; | |
30038c59 | 8060 | } |
102890f0 | 8061 | break; |
411e1bfb | 8062 | } |
102890f0 | 8063 | } |
411e1bfb | 8064 | |
85f7a9cb | 8065 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8066 | { |
8067 | struct plt_entry *ent; | |
8068 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8069 | ent != NULL; | |
8070 | ent = ent->next) | |
8071 | if (ent->addend == 0) | |
411e1bfb | 8072 | { |
102890f0 AM |
8073 | if (ent->plt.refcount > 0) |
8074 | ent->plt.refcount -= 1; | |
8075 | break; | |
411e1bfb | 8076 | } |
102890f0 | 8077 | } |
411e1bfb | 8078 | |
102890f0 | 8079 | if (tls_clear == 0) |
30038c59 AM |
8080 | continue; |
8081 | ||
102890f0 AM |
8082 | if ((tls_set & TLS_EXPLICIT) == 0) |
8083 | { | |
8084 | struct got_entry *ent; | |
411e1bfb | 8085 | |
102890f0 AM |
8086 | /* Adjust got entry for this reloc. */ |
8087 | if (h != NULL) | |
8088 | ent = h->got.glist; | |
8089 | else | |
8090 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8091 | |
102890f0 AM |
8092 | for (; ent != NULL; ent = ent->next) |
8093 | if (ent->addend == rel->r_addend | |
8094 | && ent->owner == ibfd | |
8095 | && ent->tls_type == tls_type) | |
8096 | break; | |
8097 | if (ent == NULL) | |
8098 | abort (); | |
411e1bfb | 8099 | |
102890f0 AM |
8100 | if (tls_set == 0) |
8101 | { | |
8102 | /* We managed to get rid of a got entry. */ | |
8103 | if (ent->got.refcount > 0) | |
8104 | ent->got.refcount -= 1; | |
8105 | } | |
8106 | } | |
8107 | else | |
8108 | { | |
8109 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8110 | we'll lose one or two dyn relocs. */ | |
8111 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8112 | NULL, h, sym)) |
102890f0 | 8113 | return FALSE; |
411e1bfb | 8114 | |
102890f0 AM |
8115 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8116 | { | |
8117 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8118 | NULL, h, sym)) |
102890f0 AM |
8119 | return FALSE; |
8120 | } | |
8121 | } | |
411e1bfb | 8122 | |
102890f0 AM |
8123 | *tls_mask |= tls_set; |
8124 | *tls_mask &= ~tls_clear; | |
8125 | } | |
8c1d1bb8 | 8126 | |
102890f0 AM |
8127 | if (elf_section_data (sec)->relocs != relstart) |
8128 | free (relstart); | |
8129 | } | |
411e1bfb | 8130 | |
663a1470 AM |
8131 | if (locsyms != NULL |
8132 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8133 | { | |
8134 | if (!info->keep_memory) | |
8135 | free (locsyms); | |
8136 | else | |
8137 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8138 | } | |
8139 | } | |
411e1bfb | 8140 | |
663a1470 AM |
8141 | if (toc_ref != NULL) |
8142 | free (toc_ref); | |
b34976b6 | 8143 | return TRUE; |
1e2f5b6e | 8144 | } |
b34976b6 | 8145 | |
c5614fa4 AM |
8146 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8147 | the values of any global symbols in a toc section that has been | |
8148 | edited. Globals in toc sections should be a rarity, so this function | |
8149 | sets a flag if any are found in toc sections other than the one just | |
8150 | edited, so that futher hash table traversals can be avoided. */ | |
8151 | ||
8152 | struct adjust_toc_info | |
8153 | { | |
8154 | asection *toc; | |
8155 | unsigned long *skip; | |
8156 | bfd_boolean global_toc_syms; | |
8157 | }; | |
8158 | ||
ba761f19 AM |
8159 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8160 | ||
c5614fa4 AM |
8161 | static bfd_boolean |
8162 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8163 | { | |
8164 | struct ppc_link_hash_entry *eh; | |
8165 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8166 | unsigned long i; |
c5614fa4 | 8167 | |
c5614fa4 AM |
8168 | if (h->root.type != bfd_link_hash_defined |
8169 | && h->root.type != bfd_link_hash_defweak) | |
8170 | return TRUE; | |
8171 | ||
8172 | eh = (struct ppc_link_hash_entry *) h; | |
8173 | if (eh->adjust_done) | |
8174 | return TRUE; | |
8175 | ||
8176 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8177 | { | |
854b41e7 AM |
8178 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8179 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8180 | else |
854b41e7 AM |
8181 | i = eh->elf.root.u.def.value >> 3; |
8182 | ||
ba761f19 | 8183 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8184 | { |
8185 | (*_bfd_error_handler) | |
854b41e7 AM |
8186 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8187 | do | |
8188 | ++i; | |
ba761f19 | 8189 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8190 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8191 | } |
854b41e7 AM |
8192 | |
8193 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8194 | eh->adjust_done = 1; |
8195 | } | |
8196 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8197 | toc_inf->global_toc_syms = TRUE; | |
8198 | ||
8199 | return TRUE; | |
8200 | } | |
8201 | ||
560c8763 AM |
8202 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8203 | ||
8204 | static bfd_boolean | |
8205 | ok_lo_toc_insn (unsigned int insn) | |
8206 | { | |
8207 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8208 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8209 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8210 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8211 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8212 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8213 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8214 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8215 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8216 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8217 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8218 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8219 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8220 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8221 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8222 | && (insn & 3) != 1) | |
8223 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8224 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8225 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8226 | } | |
8227 | ||
c5614fa4 AM |
8228 | /* Examine all relocs referencing .toc sections in order to remove |
8229 | unused .toc entries. */ | |
8230 | ||
8231 | bfd_boolean | |
33c0ec9d | 8232 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8233 | { |
8234 | bfd *ibfd; | |
8235 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8236 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8237 | |
67f0cbdb | 8238 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8239 | toc_inf.global_toc_syms = TRUE; |
8240 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8241 | { | |
8242 | asection *toc, *sec; | |
8243 | Elf_Internal_Shdr *symtab_hdr; | |
8244 | Elf_Internal_Sym *local_syms; | |
425b145b | 8245 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8246 | unsigned long *skip, *drop; |
8247 | unsigned char *used; | |
8248 | unsigned char *keep, last, some_unused; | |
8249 | ||
854b41e7 AM |
8250 | if (!is_ppc64_elf (ibfd)) |
8251 | continue; | |
8252 | ||
c5614fa4 AM |
8253 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8254 | if (toc == NULL | |
92b7a70f | 8255 | || toc->size == 0 |
dbaa2011 AM |
8256 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8257 | || discarded_section (toc)) | |
c5614fa4 AM |
8258 | continue; |
8259 | ||
425b145b | 8260 | toc_relocs = NULL; |
c5614fa4 | 8261 | local_syms = NULL; |
0ffa91dd | 8262 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8263 | |
8264 | /* Look at sections dropped from the final link. */ | |
8265 | skip = NULL; | |
8266 | relstart = NULL; | |
8267 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8268 | { | |
8269 | if (sec->reloc_count == 0 | |
dbaa2011 | 8270 | || !discarded_section (sec) |
c5614fa4 AM |
8271 | || get_opd_info (sec) |
8272 | || (sec->flags & SEC_ALLOC) == 0 | |
8273 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8274 | continue; | |
8275 | ||
8276 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8277 | if (relstart == NULL) | |
8278 | goto error_ret; | |
8279 | ||
8280 | /* Run through the relocs to see which toc entries might be | |
8281 | unused. */ | |
8282 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8283 | { | |
8284 | enum elf_ppc64_reloc_type r_type; | |
8285 | unsigned long r_symndx; | |
8286 | asection *sym_sec; | |
8287 | struct elf_link_hash_entry *h; | |
8288 | Elf_Internal_Sym *sym; | |
8289 | bfd_vma val; | |
8290 | ||
8291 | r_type = ELF64_R_TYPE (rel->r_info); | |
8292 | switch (r_type) | |
8293 | { | |
8294 | default: | |
8295 | continue; | |
8296 | ||
8297 | case R_PPC64_TOC16: | |
8298 | case R_PPC64_TOC16_LO: | |
8299 | case R_PPC64_TOC16_HI: | |
8300 | case R_PPC64_TOC16_HA: | |
8301 | case R_PPC64_TOC16_DS: | |
8302 | case R_PPC64_TOC16_LO_DS: | |
8303 | break; | |
8304 | } | |
8305 | ||
8306 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8307 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8308 | r_symndx, ibfd)) | |
8309 | goto error_ret; | |
8310 | ||
8311 | if (sym_sec != toc) | |
8312 | continue; | |
8313 | ||
8314 | if (h != NULL) | |
8315 | val = h->root.u.def.value; | |
8316 | else | |
8317 | val = sym->st_value; | |
8318 | val += rel->r_addend; | |
8319 | ||
8320 | if (val >= toc->size) | |
8321 | continue; | |
8322 | ||
8323 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8324 | If not, don't mark as unused. */ | |
8325 | if (val & 7) | |
8326 | continue; | |
8327 | ||
8328 | if (skip == NULL) | |
8329 | { | |
854b41e7 | 8330 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8331 | if (skip == NULL) |
8332 | goto error_ret; | |
8333 | } | |
8334 | ||
ba761f19 | 8335 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8336 | } |
8337 | ||
8338 | if (elf_section_data (sec)->relocs != relstart) | |
8339 | free (relstart); | |
8340 | } | |
8341 | ||
ba761f19 AM |
8342 | /* For largetoc loads of address constants, we can convert |
8343 | . addis rx,2,addr@got@ha | |
8344 | . ld ry,addr@got@l(rx) | |
8345 | to | |
8346 | . addis rx,2,addr@toc@ha | |
8347 | . addi ry,rx,addr@toc@l | |
8348 | when addr is within 2G of the toc pointer. This then means | |
8349 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8350 | |
ba761f19 AM |
8351 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8352 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8353 | && toc->reloc_count != 0) | |
8354 | { | |
8355 | /* Read toc relocs. */ | |
425b145b AM |
8356 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8357 | info->keep_memory); | |
8358 | if (toc_relocs == NULL) | |
ba761f19 AM |
8359 | goto error_ret; |
8360 | ||
425b145b | 8361 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8362 | { |
8363 | enum elf_ppc64_reloc_type r_type; | |
8364 | unsigned long r_symndx; | |
8365 | asection *sym_sec; | |
8366 | struct elf_link_hash_entry *h; | |
8367 | Elf_Internal_Sym *sym; | |
8368 | bfd_vma val, addr; | |
8369 | ||
8370 | r_type = ELF64_R_TYPE (rel->r_info); | |
8371 | if (r_type != R_PPC64_ADDR64) | |
8372 | continue; | |
8373 | ||
8374 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8375 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8376 | r_symndx, ibfd)) | |
8377 | goto error_ret; | |
8378 | ||
425b145b | 8379 | if (sym_sec == NULL |
dbaa2011 | 8380 | || discarded_section (sym_sec)) |
425b145b AM |
8381 | continue; |
8382 | ||
726d3ab0 | 8383 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
ba761f19 AM |
8384 | continue; |
8385 | ||
8386 | if (h != NULL) | |
bddc25c9 AM |
8387 | { |
8388 | if (h->type == STT_GNU_IFUNC) | |
8389 | continue; | |
8390 | val = h->root.u.def.value; | |
8391 | } | |
ba761f19 | 8392 | else |
bddc25c9 AM |
8393 | { |
8394 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8395 | continue; | |
8396 | val = sym->st_value; | |
8397 | } | |
ba761f19 AM |
8398 | val += rel->r_addend; |
8399 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8400 | ||
8401 | /* We don't yet know the exact toc pointer value, but we | |
8402 | know it will be somewhere in the toc section. Don't | |
8403 | optimize if the difference from any possible toc | |
8404 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8405 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8406 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8407 | continue; | |
8408 | ||
8409 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8410 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8411 | continue; | |
8412 | ||
8413 | if (skip == NULL) | |
8414 | { | |
8415 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8416 | if (skip == NULL) | |
8417 | goto error_ret; | |
8418 | } | |
8419 | ||
8420 | skip[rel->r_offset >> 3] | |
425b145b | 8421 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8422 | } |
ba761f19 AM |
8423 | } |
8424 | ||
c5614fa4 AM |
8425 | if (skip == NULL) |
8426 | continue; | |
8427 | ||
8428 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8429 | if (used == NULL) | |
8430 | { | |
8431 | error_ret: | |
8432 | if (local_syms != NULL | |
8433 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8434 | free (local_syms); | |
8435 | if (sec != NULL | |
8436 | && relstart != NULL | |
8437 | && elf_section_data (sec)->relocs != relstart) | |
8438 | free (relstart); | |
425b145b AM |
8439 | if (toc_relocs != NULL |
8440 | && elf_section_data (toc)->relocs != toc_relocs) | |
8441 | free (toc_relocs); | |
c5614fa4 AM |
8442 | if (skip != NULL) |
8443 | free (skip); | |
8444 | return FALSE; | |
8445 | } | |
8446 | ||
30038c59 AM |
8447 | /* Now check all kept sections that might reference the toc. |
8448 | Check the toc itself last. */ | |
8449 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8450 | : ibfd->sections); | |
c5614fa4 | 8451 | sec != NULL; |
c5614fa4 | 8452 | sec = (sec == toc ? NULL |
c5614fa4 | 8453 | : sec->next == NULL ? toc |
30038c59 | 8454 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8455 | : sec->next)) |
8456 | { | |
8457 | int repeat; | |
8458 | ||
8459 | if (sec->reloc_count == 0 | |
dbaa2011 | 8460 | || discarded_section (sec) |
c5614fa4 AM |
8461 | || get_opd_info (sec) |
8462 | || (sec->flags & SEC_ALLOC) == 0 | |
8463 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8464 | continue; | |
8465 | ||
854b41e7 AM |
8466 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8467 | info->keep_memory); | |
c5614fa4 AM |
8468 | if (relstart == NULL) |
8469 | goto error_ret; | |
8470 | ||
8471 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8472 | do |
d4f1ee75 AM |
8473 | { |
8474 | repeat = 0; | |
8475 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8476 | { | |
8477 | enum elf_ppc64_reloc_type r_type; | |
8478 | unsigned long r_symndx; | |
8479 | asection *sym_sec; | |
8480 | struct elf_link_hash_entry *h; | |
8481 | Elf_Internal_Sym *sym; | |
8482 | bfd_vma val; | |
8483 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8484 | |
d4f1ee75 AM |
8485 | r_type = ELF64_R_TYPE (rel->r_info); |
8486 | switch (r_type) | |
8487 | { | |
8488 | default: | |
8489 | insn_check = no_check; | |
8490 | break; | |
98528052 | 8491 | |
d4f1ee75 AM |
8492 | case R_PPC64_GOT_TLSLD16_HA: |
8493 | case R_PPC64_GOT_TLSGD16_HA: | |
8494 | case R_PPC64_GOT_TPREL16_HA: | |
8495 | case R_PPC64_GOT_DTPREL16_HA: | |
8496 | case R_PPC64_GOT16_HA: | |
8497 | case R_PPC64_TOC16_HA: | |
8498 | insn_check = check_ha; | |
8499 | break; | |
98528052 | 8500 | |
d4f1ee75 AM |
8501 | case R_PPC64_GOT_TLSLD16_LO: |
8502 | case R_PPC64_GOT_TLSGD16_LO: | |
8503 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8504 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8505 | case R_PPC64_GOT16_LO: | |
8506 | case R_PPC64_GOT16_LO_DS: | |
8507 | case R_PPC64_TOC16_LO: | |
8508 | case R_PPC64_TOC16_LO_DS: | |
8509 | insn_check = check_lo; | |
8510 | break; | |
8511 | } | |
560c8763 | 8512 | |
d4f1ee75 AM |
8513 | if (insn_check != no_check) |
8514 | { | |
8515 | bfd_vma off = rel->r_offset & ~3; | |
8516 | unsigned char buf[4]; | |
8517 | unsigned int insn; | |
c5614fa4 | 8518 | |
d4f1ee75 AM |
8519 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8520 | { | |
8521 | free (used); | |
8522 | goto error_ret; | |
8523 | } | |
8524 | insn = bfd_get_32 (ibfd, buf); | |
8525 | if (insn_check == check_lo | |
8526 | ? !ok_lo_toc_insn (insn) | |
8527 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8528 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8529 | { | |
8530 | char str[12]; | |
8531 | ||
8532 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8533 | sprintf (str, "%#08x", insn); | |
8534 | info->callbacks->einfo | |
8535 | (_("%P: %H: toc optimization is not supported for" | |
8536 | " %s instruction.\n"), | |
8537 | ibfd, sec, rel->r_offset & ~3, str); | |
8538 | } | |
8539 | } | |
c5614fa4 | 8540 | |
d4f1ee75 AM |
8541 | switch (r_type) |
8542 | { | |
8543 | case R_PPC64_TOC16: | |
8544 | case R_PPC64_TOC16_LO: | |
8545 | case R_PPC64_TOC16_HI: | |
8546 | case R_PPC64_TOC16_HA: | |
8547 | case R_PPC64_TOC16_DS: | |
8548 | case R_PPC64_TOC16_LO_DS: | |
8549 | /* In case we're taking addresses of toc entries. */ | |
8550 | case R_PPC64_ADDR64: | |
8551 | break; | |
c5614fa4 | 8552 | |
d4f1ee75 AM |
8553 | default: |
8554 | continue; | |
8555 | } | |
c5614fa4 | 8556 | |
d4f1ee75 AM |
8557 | r_symndx = ELF64_R_SYM (rel->r_info); |
8558 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8559 | r_symndx, ibfd)) | |
8560 | { | |
8561 | free (used); | |
8562 | goto error_ret; | |
8563 | } | |
c5614fa4 | 8564 | |
d4f1ee75 AM |
8565 | if (sym_sec != toc) |
8566 | continue; | |
c5614fa4 | 8567 | |
d4f1ee75 AM |
8568 | if (h != NULL) |
8569 | val = h->root.u.def.value; | |
8570 | else | |
8571 | val = sym->st_value; | |
8572 | val += rel->r_addend; | |
ba761f19 | 8573 | |
d4f1ee75 AM |
8574 | if (val >= toc->size) |
8575 | continue; | |
ba761f19 | 8576 | |
d4f1ee75 AM |
8577 | if ((skip[val >> 3] & can_optimize) != 0) |
8578 | { | |
8579 | bfd_vma off; | |
8580 | unsigned char opc; | |
8581 | ||
8582 | switch (r_type) | |
8583 | { | |
8584 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8585 | break; |
ba761f19 | 8586 | |
d4f1ee75 AM |
8587 | case R_PPC64_TOC16_LO_DS: |
8588 | off = rel->r_offset; | |
8589 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8590 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8591 | off, 1)) | |
8592 | { | |
8593 | free (used); | |
8594 | goto error_ret; | |
8595 | } | |
8596 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8597 | break; | |
8598 | /* Fall thru */ | |
ba761f19 | 8599 | |
d4f1ee75 AM |
8600 | default: |
8601 | /* Wrong sort of reloc, or not a ld. We may | |
8602 | as well clear ref_from_discarded too. */ | |
8603 | skip[val >> 3] = 0; | |
8604 | } | |
8605 | } | |
8606 | ||
8607 | if (sec != toc) | |
8608 | used[val >> 3] = 1; | |
8609 | /* For the toc section, we only mark as used if this | |
8610 | entry itself isn't unused. */ | |
8611 | else if ((used[rel->r_offset >> 3] | |
8612 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8613 | && !used[val >> 3]) | |
8614 | { | |
8615 | /* Do all the relocs again, to catch reference | |
8616 | chains. */ | |
8617 | repeat = 1; | |
8618 | used[val >> 3] = 1; | |
8619 | } | |
8620 | } | |
8621 | } | |
c5614fa4 | 8622 | while (repeat); |
854b41e7 AM |
8623 | |
8624 | if (elf_section_data (sec)->relocs != relstart) | |
8625 | free (relstart); | |
c5614fa4 AM |
8626 | } |
8627 | ||
8628 | /* Merge the used and skip arrays. Assume that TOC | |
8629 | doublewords not appearing as either used or unused belong | |
8630 | to to an entry more than one doubleword in size. */ | |
8631 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8632 | drop < skip + (toc->size + 7) / 8; | |
8633 | ++drop, ++keep) | |
8634 | { | |
8635 | if (*keep) | |
8636 | { | |
ba761f19 AM |
8637 | *drop &= ~ref_from_discarded; |
8638 | if ((*drop & can_optimize) != 0) | |
8639 | some_unused = 1; | |
c5614fa4 AM |
8640 | last = 0; |
8641 | } | |
b140b010 | 8642 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8643 | { |
8644 | some_unused = 1; | |
ba761f19 | 8645 | last = ref_from_discarded; |
c5614fa4 AM |
8646 | } |
8647 | else | |
8648 | *drop = last; | |
8649 | } | |
8650 | ||
8651 | free (used); | |
8652 | ||
8653 | if (some_unused) | |
8654 | { | |
8655 | bfd_byte *contents, *src; | |
8656 | unsigned long off; | |
d62b3684 | 8657 | Elf_Internal_Sym *sym; |
ba761f19 | 8658 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8659 | |
8660 | /* Shuffle the toc contents, and at the same time convert the | |
8661 | skip array from booleans into offsets. */ | |
8662 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8663 | goto error_ret; | |
8664 | ||
8665 | elf_section_data (toc)->this_hdr.contents = contents; | |
8666 | ||
8667 | for (src = contents, off = 0, drop = skip; | |
8668 | src < contents + toc->size; | |
8669 | src += 8, ++drop) | |
8670 | { | |
ba761f19 AM |
8671 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8672 | off += 8; | |
c5614fa4 AM |
8673 | else if (off != 0) |
8674 | { | |
8675 | *drop = off; | |
8676 | memcpy (src - off, src, 8); | |
8677 | } | |
8678 | } | |
854b41e7 | 8679 | *drop = off; |
c5614fa4 AM |
8680 | toc->rawsize = toc->size; |
8681 | toc->size = src - contents - off; | |
8682 | ||
ba761f19 AM |
8683 | /* Adjust addends for relocs against the toc section sym, |
8684 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8685 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8686 | { | |
8687 | if (sec->reloc_count == 0 | |
dbaa2011 | 8688 | || discarded_section (sec)) |
c5614fa4 AM |
8689 | continue; |
8690 | ||
8691 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8692 | info->keep_memory); |
c5614fa4 AM |
8693 | if (relstart == NULL) |
8694 | goto error_ret; | |
8695 | ||
8696 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8697 | { | |
8698 | enum elf_ppc64_reloc_type r_type; | |
8699 | unsigned long r_symndx; | |
8700 | asection *sym_sec; | |
8701 | struct elf_link_hash_entry *h; | |
854b41e7 | 8702 | bfd_vma val; |
c5614fa4 AM |
8703 | |
8704 | r_type = ELF64_R_TYPE (rel->r_info); | |
8705 | switch (r_type) | |
8706 | { | |
8707 | default: | |
8708 | continue; | |
8709 | ||
8710 | case R_PPC64_TOC16: | |
8711 | case R_PPC64_TOC16_LO: | |
8712 | case R_PPC64_TOC16_HI: | |
8713 | case R_PPC64_TOC16_HA: | |
8714 | case R_PPC64_TOC16_DS: | |
8715 | case R_PPC64_TOC16_LO_DS: | |
8716 | case R_PPC64_ADDR64: | |
8717 | break; | |
8718 | } | |
8719 | ||
8720 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8721 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8722 | r_symndx, ibfd)) | |
8723 | goto error_ret; | |
8724 | ||
ba761f19 | 8725 | if (sym_sec != toc) |
c5614fa4 AM |
8726 | continue; |
8727 | ||
ba761f19 AM |
8728 | if (h != NULL) |
8729 | val = h->root.u.def.value; | |
8730 | else | |
8731 | { | |
8732 | val = sym->st_value; | |
8733 | if (val != 0) | |
8734 | local_toc_syms = TRUE; | |
8735 | } | |
8736 | ||
8737 | val += rel->r_addend; | |
854b41e7 AM |
8738 | |
8739 | if (val > toc->rawsize) | |
8740 | val = toc->rawsize; | |
ba761f19 AM |
8741 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8742 | continue; | |
8743 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8744 | { | |
8745 | Elf_Internal_Rela *tocrel | |
425b145b | 8746 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8747 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8748 | ||
8749 | switch (r_type) | |
8750 | { | |
8751 | case R_PPC64_TOC16_HA: | |
8752 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8753 | break; | |
8754 | ||
8755 | case R_PPC64_TOC16_LO_DS: | |
8756 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8757 | break; | |
8758 | ||
8759 | default: | |
28942f62 AM |
8760 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8761 | ppc_howto_init (); | |
b140b010 | 8762 | info->callbacks->einfo |
bc30df16 | 8763 | (_("%P: %H: %s references " |
b140b010 AM |
8764 | "optimized away TOC entry\n"), |
8765 | ibfd, sec, rel->r_offset, | |
8766 | ppc64_elf_howto_table[r_type]->name); | |
8767 | bfd_set_error (bfd_error_bad_value); | |
8768 | goto error_ret; | |
ba761f19 AM |
8769 | } |
8770 | rel->r_addend = tocrel->r_addend; | |
8771 | elf_section_data (sec)->relocs = relstart; | |
8772 | continue; | |
8773 | } | |
8774 | ||
8775 | if (h != NULL || sym->st_value != 0) | |
8776 | continue; | |
854b41e7 AM |
8777 | |
8778 | rel->r_addend -= skip[val >> 3]; | |
8779 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8780 | } |
854b41e7 AM |
8781 | |
8782 | if (elf_section_data (sec)->relocs != relstart) | |
8783 | free (relstart); | |
c5614fa4 AM |
8784 | } |
8785 | ||
8786 | /* We shouldn't have local or global symbols defined in the TOC, | |
8787 | but handle them anyway. */ | |
df22d223 AM |
8788 | if (local_syms != NULL) |
8789 | for (sym = local_syms; | |
8790 | sym < local_syms + symtab_hdr->sh_info; | |
8791 | ++sym) | |
8792 | if (sym->st_value != 0 | |
8793 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8794 | { | |
8795 | unsigned long i; | |
854b41e7 | 8796 | |
df22d223 AM |
8797 | if (sym->st_value > toc->rawsize) |
8798 | i = toc->rawsize >> 3; | |
8799 | else | |
8800 | i = sym->st_value >> 3; | |
854b41e7 | 8801 | |
df22d223 AM |
8802 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8803 | { | |
8804 | if (local_toc_syms) | |
8805 | (*_bfd_error_handler) | |
8806 | (_("%s defined on removed toc entry"), | |
8807 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8808 | do | |
8809 | ++i; | |
8810 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8811 | sym->st_value = (bfd_vma) i << 3; | |
8812 | } | |
d62b3684 | 8813 | |
df22d223 AM |
8814 | sym->st_value -= skip[i]; |
8815 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8816 | } | |
c5614fa4 | 8817 | |
854b41e7 | 8818 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8819 | if (toc_inf.global_toc_syms) |
8820 | { | |
8821 | toc_inf.toc = toc; | |
8822 | toc_inf.skip = skip; | |
8823 | toc_inf.global_toc_syms = FALSE; | |
8824 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8825 | &toc_inf); | |
8826 | } | |
854b41e7 AM |
8827 | |
8828 | if (toc->reloc_count != 0) | |
8829 | { | |
d4730f92 | 8830 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8831 | Elf_Internal_Rela *wrel; |
8832 | bfd_size_type sz; | |
8833 | ||
854b41e7 | 8834 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8835 | if (toc_relocs == NULL) |
8836 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8837 | info->keep_memory); | |
8838 | if (toc_relocs == NULL) | |
8839 | goto error_ret; | |
8840 | ||
425b145b AM |
8841 | wrel = toc_relocs; |
8842 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8843 | if ((skip[rel->r_offset >> 3] |
8844 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8845 | { |
8846 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8847 | wrel->r_info = rel->r_info; | |
8848 | wrel->r_addend = rel->r_addend; | |
8849 | ++wrel; | |
8850 | } | |
8851 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8852 | &local_syms, NULL, NULL)) | |
8853 | goto error_ret; | |
8854 | ||
425b145b AM |
8855 | elf_section_data (toc)->relocs = toc_relocs; |
8856 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8857 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8858 | sz = rel_hdr->sh_entsize; | |
8859 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8860 | } |
c5614fa4 | 8861 | } |
28be611c AM |
8862 | else if (toc_relocs != NULL |
8863 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8864 | free (toc_relocs); |
c5614fa4 AM |
8865 | |
8866 | if (local_syms != NULL | |
8867 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8868 | { | |
8869 | if (!info->keep_memory) | |
8870 | free (local_syms); | |
8871 | else | |
8872 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8873 | } | |
8874 | free (skip); | |
8875 | } | |
8876 | ||
8877 | return TRUE; | |
8878 | } | |
8879 | ||
1bbe0902 AM |
8880 | /* Return true iff input section I references the TOC using |
8881 | instructions limited to +/-32k offsets. */ | |
8882 | ||
8883 | bfd_boolean | |
8884 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8885 | { | |
8886 | return (is_ppc64_elf (i->owner) | |
8887 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8888 | } | |
8889 | ||
927be08e AM |
8890 | /* Allocate space for one GOT entry. */ |
8891 | ||
8892 | static void | |
8893 | allocate_got (struct elf_link_hash_entry *h, | |
8894 | struct bfd_link_info *info, | |
8895 | struct got_entry *gent) | |
8896 | { | |
8897 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8898 | bfd_boolean dyn; | |
8899 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8900 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8901 | ? 16 : 8); | |
8902 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8903 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8904 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8905 | ||
8906 | gent->got.offset = got->size; | |
8907 | got->size += entsize; | |
8908 | ||
8909 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 8910 | if (h->type == STT_GNU_IFUNC) |
927be08e | 8911 | { |
19e08130 AM |
8912 | htab->reliplt->size += rentsize; |
8913 | htab->got_reli_size += rentsize; | |
927be08e | 8914 | } |
19e08130 AM |
8915 | else if ((info->shared |
8916 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8917 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8918 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 8919 | { |
19e08130 | 8920 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 8921 | relgot->size += rentsize; |
927be08e AM |
8922 | } |
8923 | } | |
8924 | ||
7865406b AM |
8925 | /* This function merges got entries in the same toc group. */ |
8926 | ||
8927 | static void | |
8928 | merge_got_entries (struct got_entry **pent) | |
8929 | { | |
8930 | struct got_entry *ent, *ent2; | |
8931 | ||
8932 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8933 | if (!ent->is_indirect) | |
8934 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8935 | if (!ent2->is_indirect | |
8936 | && ent2->addend == ent->addend | |
8937 | && ent2->tls_type == ent->tls_type | |
8938 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8939 | { | |
8940 | ent2->is_indirect = TRUE; | |
8941 | ent2->got.ent = ent; | |
8942 | } | |
8943 | } | |
8944 | ||
65f38f15 AM |
8945 | /* Allocate space in .plt, .got and associated reloc sections for |
8946 | dynamic relocs. */ | |
5bd4f169 | 8947 | |
b34976b6 | 8948 | static bfd_boolean |
4ce794b7 | 8949 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8950 | { |
65f38f15 AM |
8951 | struct bfd_link_info *info; |
8952 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8953 | asection *s; |
65f38f15 | 8954 | struct ppc_link_hash_entry *eh; |
6061a67d | 8955 | struct elf_dyn_relocs *p; |
0b8bcf0d | 8956 | struct got_entry **pgent, *gent; |
5bd4f169 | 8957 | |
e92d460e | 8958 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8959 | return TRUE; |
5bd4f169 | 8960 | |
65f38f15 AM |
8961 | info = (struct bfd_link_info *) inf; |
8962 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8963 | if (htab == NULL) |
8964 | return FALSE; | |
5bd4f169 | 8965 | |
e054468f AM |
8966 | if ((htab->elf.dynamic_sections_created |
8967 | && h->dynindx != -1 | |
8968 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8969 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8970 | { |
411e1bfb AM |
8971 | struct plt_entry *pent; |
8972 | bfd_boolean doneone = FALSE; | |
8973 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8974 | if (pent->plt.refcount > 0) | |
8975 | { | |
25f23106 AM |
8976 | if (!htab->elf.dynamic_sections_created |
8977 | || h->dynindx == -1) | |
e054468f AM |
8978 | { |
8979 | s = htab->iplt; | |
8980 | pent->plt.offset = s->size; | |
8981 | s->size += PLT_ENTRY_SIZE; | |
8982 | s = htab->reliplt; | |
8983 | } | |
8984 | else | |
8985 | { | |
8986 | /* If this is the first .plt entry, make room for the special | |
8987 | first entry. */ | |
8988 | s = htab->plt; | |
8989 | if (s->size == 0) | |
8990 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8991 | ||
8992 | pent->plt.offset = s->size; | |
8993 | ||
8994 | /* Make room for this entry. */ | |
8995 | s->size += PLT_ENTRY_SIZE; | |
8996 | ||
8997 | /* Make room for the .glink code. */ | |
8998 | s = htab->glink; | |
8999 | if (s->size == 0) | |
9000 | s->size += GLINK_CALL_STUB_SIZE; | |
9001 | /* We need bigger stubs past index 32767. */ | |
9002 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9003 | s->size += 4; | |
9004 | s->size += 2*4; | |
9005 | ||
9006 | /* We also need to make an entry in the .rela.plt section. */ | |
9007 | s = htab->relplt; | |
9008 | } | |
eea6121a | 9009 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9010 | doneone = TRUE; |
9011 | } | |
9012 | else | |
9013 | pent->plt.offset = (bfd_vma) -1; | |
9014 | if (!doneone) | |
65f38f15 | 9015 | { |
411e1bfb | 9016 | h->plt.plist = NULL; |
f5385ebf | 9017 | h->needs_plt = 0; |
65f38f15 AM |
9018 | } |
9019 | } | |
9020 | else | |
9021 | { | |
411e1bfb | 9022 | h->plt.plist = NULL; |
f5385ebf | 9023 | h->needs_plt = 0; |
65f38f15 AM |
9024 | } |
9025 | ||
951fd09b AM |
9026 | eh = (struct ppc_link_hash_entry *) h; |
9027 | /* Run through the TLS GD got entries first if we're changing them | |
9028 | to TPREL. */ | |
e7b938ca | 9029 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9030 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9031 | if (gent->got.refcount > 0 | |
9032 | && (gent->tls_type & TLS_GD) != 0) | |
9033 | { | |
9034 | /* This was a GD entry that has been converted to TPREL. If | |
9035 | there happens to be a TPREL entry we can use that one. */ | |
9036 | struct got_entry *ent; | |
9037 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9038 | if (ent->got.refcount > 0 | |
9039 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9040 | && ent->addend == gent->addend |
9041 | && ent->owner == gent->owner) | |
951fd09b AM |
9042 | { |
9043 | gent->got.refcount = 0; | |
9044 | break; | |
9045 | } | |
9046 | ||
9047 | /* If not, then we'll be using our own TPREL entry. */ | |
9048 | if (gent->got.refcount != 0) | |
9049 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9050 | } | |
9051 | ||
7865406b AM |
9052 | /* Remove any list entry that won't generate a word in the GOT before |
9053 | we call merge_got_entries. Otherwise we risk merging to empty | |
9054 | entries. */ | |
0b8bcf0d AM |
9055 | pgent = &h->got.glist; |
9056 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9057 | if (gent->got.refcount > 0) |
7865406b AM |
9058 | { |
9059 | if ((gent->tls_type & TLS_LD) != 0 | |
9060 | && !h->def_dynamic) | |
9061 | { | |
9062 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9063 | *pgent = gent->next; | |
9064 | } | |
9065 | else | |
9066 | pgent = &gent->next; | |
9067 | } | |
9068 | else | |
9069 | *pgent = gent->next; | |
9070 | ||
9071 | if (!htab->do_multi_toc) | |
9072 | merge_got_entries (&h->got.glist); | |
9073 | ||
9074 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9075 | if (!gent->is_indirect) | |
411e1bfb AM |
9076 | { |
9077 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9078 | Undefined weak syms won't yet be marked as dynamic, |
9079 | nor will all TLS symbols. */ | |
411e1bfb | 9080 | if (h->dynindx == -1 |
b099ab9f | 9081 | && !h->forced_local |
25f23106 | 9082 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9083 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9084 | { |
c152c796 | 9085 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9086 | return FALSE; |
9087 | } | |
65f38f15 | 9088 | |
0c8d6e5c | 9089 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9090 | abort (); |
0ffa91dd | 9091 | |
927be08e | 9092 | allocate_got (h, info, gent); |
411e1bfb | 9093 | } |
65f38f15 | 9094 | |
b099ab9f | 9095 | if (eh->dyn_relocs == NULL |
25f23106 AM |
9096 | || (!htab->elf.dynamic_sections_created |
9097 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 9098 | return TRUE; |
65f38f15 AM |
9099 | |
9100 | /* In the shared -Bsymbolic case, discard space allocated for | |
9101 | dynamic pc-relative relocs against symbols which turn out to be | |
9102 | defined in regular objects. For the normal shared case, discard | |
9103 | space for relocs that have become local due to symbol visibility | |
9104 | changes. */ | |
9105 | ||
9106 | if (info->shared) | |
9107 | { | |
9c7a29a3 | 9108 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9109 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9110 | generated via assembly. We want calls to protected symbols to |
9111 | resolve directly to the function rather than going via the plt. | |
9112 | If people want function pointer comparisons to work as expected | |
9113 | then they should avoid writing weird assembly. */ | |
09695f56 | 9114 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9115 | { |
6061a67d | 9116 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9117 | |
9118 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9119 | { |
65f38f15 AM |
9120 | p->count -= p->pc_count; |
9121 | p->pc_count = 0; | |
9122 | if (p->count == 0) | |
9123 | *pp = p->next; | |
9124 | else | |
9125 | pp = &p->next; | |
5bd4f169 | 9126 | } |
65f38f15 | 9127 | } |
4e795f50 AM |
9128 | |
9129 | /* Also discard relocs on undefined weak syms with non-default | |
9130 | visibility. */ | |
cab87ef9 AM |
9131 | if (eh->dyn_relocs != NULL |
9132 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9133 | { |
9134 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9135 | eh->dyn_relocs = NULL; | |
9136 | ||
9137 | /* Make sure this symbol is output as a dynamic symbol. | |
9138 | Undefined weak syms won't yet be marked as dynamic. */ | |
9139 | else if (h->dynindx == -1 | |
9140 | && !h->forced_local) | |
9141 | { | |
9142 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9143 | return FALSE; | |
9144 | } | |
9145 | } | |
65f38f15 | 9146 | } |
25f23106 AM |
9147 | else if (h->type == STT_GNU_IFUNC) |
9148 | { | |
9149 | if (!h->non_got_ref) | |
9150 | eh->dyn_relocs = NULL; | |
9151 | } | |
f4656909 | 9152 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9153 | { |
9154 | /* For the non-shared case, discard space for relocs against | |
9155 | symbols which turn out to need copy relocs or are not | |
9156 | dynamic. */ | |
9157 | ||
f5385ebf | 9158 | if (!h->non_got_ref |
f5385ebf | 9159 | && !h->def_regular) |
65f38f15 AM |
9160 | { |
9161 | /* Make sure this symbol is output as a dynamic symbol. | |
9162 | Undefined weak syms won't yet be marked as dynamic. */ | |
9163 | if (h->dynindx == -1 | |
f5385ebf | 9164 | && !h->forced_local) |
65f38f15 | 9165 | { |
c152c796 | 9166 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9167 | return FALSE; |
65f38f15 AM |
9168 | } |
9169 | ||
9170 | /* If that succeeded, we know we'll be keeping all the | |
9171 | relocs. */ | |
9172 | if (h->dynindx != -1) | |
9173 | goto keep; | |
9174 | } | |
9175 | ||
9176 | eh->dyn_relocs = NULL; | |
9177 | ||
ec338859 | 9178 | keep: ; |
65f38f15 AM |
9179 | } |
9180 | ||
9181 | /* Finally, allocate space. */ | |
9182 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9183 | { | |
9184 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9185 | if (eh->elf.type == STT_GNU_IFUNC) |
25f23106 | 9186 | sreloc = htab->reliplt; |
eea6121a | 9187 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9188 | } |
9189 | ||
b34976b6 | 9190 | return TRUE; |
65f38f15 AM |
9191 | } |
9192 | ||
9193 | /* Find any dynamic relocs that apply to read-only sections. */ | |
9194 | ||
b34976b6 | 9195 | static bfd_boolean |
4ce794b7 | 9196 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
9197 | { |
9198 | struct ppc_link_hash_entry *eh; | |
6061a67d | 9199 | struct elf_dyn_relocs *p; |
65f38f15 AM |
9200 | |
9201 | eh = (struct ppc_link_hash_entry *) h; | |
9202 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9203 | { | |
9204 | asection *s = p->sec->output_section; | |
9205 | ||
9206 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
9207 | { | |
4ce794b7 | 9208 | struct bfd_link_info *info = inf; |
65f38f15 AM |
9209 | |
9210 | info->flags |= DF_TEXTREL; | |
9211 | ||
9212 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 9213 | return FALSE; |
65f38f15 AM |
9214 | } |
9215 | } | |
b34976b6 | 9216 | return TRUE; |
65f38f15 AM |
9217 | } |
9218 | ||
9219 | /* Set the sizes of the dynamic sections. */ | |
9220 | ||
b34976b6 | 9221 | static bfd_boolean |
4ce794b7 AM |
9222 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
9223 | struct bfd_link_info *info) | |
65f38f15 AM |
9224 | { |
9225 | struct ppc_link_hash_table *htab; | |
9226 | bfd *dynobj; | |
9227 | asection *s; | |
b34976b6 | 9228 | bfd_boolean relocs; |
65f38f15 | 9229 | bfd *ibfd; |
7865406b | 9230 | struct got_entry *first_tlsld; |
65f38f15 AM |
9231 | |
9232 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9233 | if (htab == NULL) |
9234 | return FALSE; | |
9235 | ||
65f38f15 AM |
9236 | dynobj = htab->elf.dynobj; |
9237 | if (dynobj == NULL) | |
9238 | abort (); | |
9239 | ||
9240 | if (htab->elf.dynamic_sections_created) | |
9241 | { | |
9242 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9243 | if (info->executable) |
65f38f15 | 9244 | { |
3d4d4302 | 9245 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9246 | if (s == NULL) |
9247 | abort (); | |
eea6121a | 9248 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9249 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9250 | } | |
9251 | } | |
9252 | ||
9253 | /* Set up .got offsets for local syms, and space for local dynamic | |
9254 | relocs. */ | |
9255 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9256 | { | |
411e1bfb AM |
9257 | struct got_entry **lgot_ents; |
9258 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9259 | struct plt_entry **local_plt; |
9260 | struct plt_entry **end_local_plt; | |
f961d9dd | 9261 | unsigned char *lgot_masks; |
65f38f15 AM |
9262 | bfd_size_type locsymcount; |
9263 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9264 | |
0c8d6e5c | 9265 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9266 | continue; |
9267 | ||
9268 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9269 | { | |
19e08130 | 9270 | struct ppc_dyn_relocs *p; |
65f38f15 | 9271 | |
6edfbbad | 9272 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9273 | { |
ec338859 AM |
9274 | if (!bfd_is_abs_section (p->sec) |
9275 | && bfd_is_abs_section (p->sec->output_section)) | |
9276 | { | |
9277 | /* Input section has been discarded, either because | |
9278 | it is a copy of a linkonce section or due to | |
9279 | linker script /DISCARD/, so we'll be discarding | |
9280 | the relocs too. */ | |
9281 | } | |
248866a8 | 9282 | else if (p->count != 0) |
ec338859 | 9283 | { |
19e08130 AM |
9284 | asection *srel = elf_section_data (p->sec)->sreloc; |
9285 | if (p->ifunc) | |
25f23106 | 9286 | srel = htab->reliplt; |
eea6121a | 9287 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9288 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9289 | info->flags |= DF_TEXTREL; | |
ec338859 | 9290 | } |
65f38f15 AM |
9291 | } |
9292 | } | |
9293 | ||
411e1bfb AM |
9294 | lgot_ents = elf_local_got_ents (ibfd); |
9295 | if (!lgot_ents) | |
65f38f15 AM |
9296 | continue; |
9297 | ||
0ffa91dd | 9298 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9299 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9300 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9301 | local_plt = (struct plt_entry **) end_lgot_ents; |
9302 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9303 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9304 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9305 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9306 | { |
0b8bcf0d | 9307 | struct got_entry **pent, *ent; |
411e1bfb | 9308 | |
0b8bcf0d AM |
9309 | pent = lgot_ents; |
9310 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9311 | if (ent->got.refcount > 0) |
9312 | { | |
e7b938ca | 9313 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9314 | { |
927be08e | 9315 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9316 | *pent = ent->next; |
411e1bfb AM |
9317 | } |
9318 | else | |
9319 | { | |
19e08130 AM |
9320 | unsigned int ent_size = 8; |
9321 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9322 | ||
eea6121a | 9323 | ent->got.offset = s->size; |
e7b938ca | 9324 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9325 | { |
19e08130 AM |
9326 | ent_size *= 2; |
9327 | rel_size *= 2; | |
9328 | } | |
9329 | s->size += ent_size; | |
9330 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9331 | { | |
9332 | htab->reliplt->size += rel_size; | |
9333 | htab->got_reli_size += rel_size; | |
9334 | } | |
9335 | else if (info->shared) | |
9336 | { | |
9337 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9338 | srel->size += rel_size; | |
927be08e | 9339 | } |
0b8bcf0d | 9340 | pent = &ent->next; |
411e1bfb AM |
9341 | } |
9342 | } | |
9343 | else | |
0b8bcf0d | 9344 | *pent = ent->next; |
65f38f15 | 9345 | } |
e054468f AM |
9346 | |
9347 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9348 | for (; local_plt < end_local_plt; ++local_plt) | |
9349 | { | |
9350 | struct plt_entry *ent; | |
9351 | ||
9352 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9353 | if (ent->plt.refcount > 0) | |
9354 | { | |
91d6fa6a | 9355 | s = htab->iplt; |
e054468f AM |
9356 | ent->plt.offset = s->size; |
9357 | s->size += PLT_ENTRY_SIZE; | |
9358 | ||
25f23106 | 9359 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9360 | } |
9361 | else | |
9362 | ent->plt.offset = (bfd_vma) -1; | |
9363 | } | |
65f38f15 AM |
9364 | } |
9365 | ||
9366 | /* Allocate global sym .plt and .got entries, and space for global | |
9367 | sym dynamic relocs. */ | |
4ce794b7 | 9368 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 9369 | |
7865406b | 9370 | first_tlsld = NULL; |
102890f0 AM |
9371 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9372 | { | |
7865406b AM |
9373 | struct got_entry *ent; |
9374 | ||
0c8d6e5c | 9375 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9376 | continue; |
9377 | ||
7865406b AM |
9378 | ent = ppc64_tlsld_got (ibfd); |
9379 | if (ent->got.refcount > 0) | |
102890f0 | 9380 | { |
7865406b | 9381 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9382 | { |
7865406b AM |
9383 | ent->is_indirect = TRUE; |
9384 | ent->got.ent = first_tlsld; | |
9385 | } | |
9386 | else | |
9387 | { | |
9388 | if (first_tlsld == NULL) | |
9389 | first_tlsld = ent; | |
9390 | s = ppc64_elf_tdata (ibfd)->got; | |
9391 | ent->got.offset = s->size; | |
9392 | ent->owner = ibfd; | |
9393 | s->size += 16; | |
9394 | if (info->shared) | |
9395 | { | |
9396 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9397 | srel->size += sizeof (Elf64_External_Rela); | |
9398 | } | |
102890f0 AM |
9399 | } |
9400 | } | |
9401 | else | |
7865406b | 9402 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9403 | } |
9404 | ||
65f38f15 AM |
9405 | /* We now have determined the sizes of the various dynamic sections. |
9406 | Allocate memory for them. */ | |
b34976b6 | 9407 | relocs = FALSE; |
65f38f15 AM |
9408 | for (s = dynobj->sections; s != NULL; s = s->next) |
9409 | { | |
9410 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9411 | continue; | |
9412 | ||
4ce794b7 | 9413 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9414 | /* These haven't been allocated yet; don't strip. */ |
9415 | continue; | |
e717da7e AM |
9416 | else if (s == htab->got |
9417 | || s == htab->plt | |
e054468f | 9418 | || s == htab->iplt |
c456f082 AM |
9419 | || s == htab->glink |
9420 | || s == htab->dynbss) | |
65f38f15 AM |
9421 | { |
9422 | /* Strip this section if we don't need it; see the | |
9423 | comment below. */ | |
5bd4f169 | 9424 | } |
58d180e8 AM |
9425 | else if (s == htab->glink_eh_frame) |
9426 | { | |
9427 | if (!bfd_is_abs_section (s->output_section)) | |
9428 | /* Not sized yet. */ | |
9429 | continue; | |
9430 | } | |
70cc837d | 9431 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9432 | { |
c456f082 | 9433 | if (s->size != 0) |
5bd4f169 | 9434 | { |
4ce794b7 | 9435 | if (s != htab->relplt) |
b34976b6 | 9436 | relocs = TRUE; |
5bd4f169 AM |
9437 | |
9438 | /* We use the reloc_count field as a counter if we need | |
9439 | to copy relocs into the output file. */ | |
9440 | s->reloc_count = 0; | |
9441 | } | |
9442 | } | |
65f38f15 | 9443 | else |
5bd4f169 AM |
9444 | { |
9445 | /* It's not one of our sections, so don't allocate space. */ | |
9446 | continue; | |
9447 | } | |
9448 | ||
eea6121a | 9449 | if (s->size == 0) |
5bd4f169 | 9450 | { |
c456f082 AM |
9451 | /* If we don't need this section, strip it from the |
9452 | output file. This is mostly to handle .rela.bss and | |
9453 | .rela.plt. We must create both sections in | |
9454 | create_dynamic_sections, because they must be created | |
9455 | before the linker maps input sections to output | |
9456 | sections. The linker does that before | |
9457 | adjust_dynamic_symbol is called, and it is that | |
9458 | function which decides whether anything needs to go | |
9459 | into these sections. */ | |
8423293d | 9460 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9461 | continue; |
9462 | } | |
9463 | ||
c456f082 | 9464 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9465 | continue; |
9466 | ||
65f38f15 AM |
9467 | /* Allocate memory for the section contents. We use bfd_zalloc |
9468 | here in case unused entries are not reclaimed before the | |
9469 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9470 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9471 | sections instead of garbage. | |
9472 | We also rely on the section contents being zero when writing | |
9473 | the GOT. */ | |
eea6121a | 9474 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9475 | if (s->contents == NULL) |
b34976b6 | 9476 | return FALSE; |
5bd4f169 AM |
9477 | } |
9478 | ||
e717da7e AM |
9479 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9480 | { | |
0c8d6e5c | 9481 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9482 | continue; |
9483 | ||
e717da7e AM |
9484 | s = ppc64_elf_tdata (ibfd)->got; |
9485 | if (s != NULL && s != htab->got) | |
9486 | { | |
eea6121a | 9487 | if (s->size == 0) |
8423293d | 9488 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9489 | else |
9490 | { | |
eea6121a | 9491 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9492 | if (s->contents == NULL) |
9493 | return FALSE; | |
9494 | } | |
9495 | } | |
9496 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9497 | if (s != NULL) | |
9498 | { | |
eea6121a | 9499 | if (s->size == 0) |
8423293d | 9500 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9501 | else |
9502 | { | |
eea6121a | 9503 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9504 | if (s->contents == NULL) |
9505 | return FALSE; | |
9506 | relocs = TRUE; | |
9507 | s->reloc_count = 0; | |
9508 | } | |
9509 | } | |
9510 | } | |
9511 | ||
e86ce104 | 9512 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
9513 | { |
9514 | /* Add some entries to the .dynamic section. We fill in the | |
9515 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9516 | must add the entries now so that we get the correct size for | |
9517 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9518 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9519 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9520 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9521 | |
36af4a4e | 9522 | if (info->executable) |
5bd4f169 | 9523 | { |
dc810e39 | 9524 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9525 | return FALSE; |
5bd4f169 AM |
9526 | } |
9527 | ||
eea6121a | 9528 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 9529 | { |
dc810e39 AM |
9530 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9531 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9532 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9533 | || !add_dynamic_entry (DT_JMPREL, 0) |
9534 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9535 | return FALSE; |
5bd4f169 AM |
9536 | } |
9537 | ||
19397422 AM |
9538 | if (NO_OPD_RELOCS) |
9539 | { | |
9540 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9541 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9542 | return FALSE; |
19397422 AM |
9543 | } |
9544 | ||
a7f2871e AM |
9545 | if (!htab->no_tls_get_addr_opt |
9546 | && htab->tls_get_addr_fd != NULL | |
9547 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
9548 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
9549 | return FALSE; | |
9550 | ||
5bd4f169 AM |
9551 | if (relocs) |
9552 | { | |
dc810e39 AM |
9553 | if (!add_dynamic_entry (DT_RELA, 0) |
9554 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9555 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9556 | return FALSE; |
5bd4f169 | 9557 | |
65f38f15 AM |
9558 | /* If any dynamic relocs apply to a read-only section, |
9559 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9560 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 9561 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 9562 | |
65f38f15 | 9563 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9564 | { |
65f38f15 | 9565 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9566 | return FALSE; |
5bd4f169 | 9567 | } |
5bd4f169 | 9568 | } |
5bd4f169 | 9569 | } |
65f38f15 | 9570 | #undef add_dynamic_entry |
5bd4f169 | 9571 | |
b34976b6 | 9572 | return TRUE; |
5bd4f169 AM |
9573 | } |
9574 | ||
721956f4 | 9575 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9576 | |
4ce794b7 AM |
9577 | static inline enum ppc_stub_type |
9578 | ppc_type_of_stub (asection *input_sec, | |
9579 | const Elf_Internal_Rela *rel, | |
9580 | struct ppc_link_hash_entry **hash, | |
e054468f | 9581 | struct plt_entry **plt_ent, |
4ce794b7 | 9582 | bfd_vma destination) |
5bd4f169 | 9583 | { |
721956f4 AM |
9584 | struct ppc_link_hash_entry *h = *hash; |
9585 | bfd_vma location; | |
9586 | bfd_vma branch_offset; | |
9587 | bfd_vma max_branch_offset; | |
4ce794b7 | 9588 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9589 | |
721956f4 AM |
9590 | if (h != NULL) |
9591 | { | |
e054468f | 9592 | struct plt_entry *ent; |
7fe2b9a6 | 9593 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9594 | if (h->oh != NULL |
9595 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9596 | { |
9597 | fdh = ppc_follow_link (h->oh); | |
9598 | *hash = fdh; | |
9599 | } | |
8387904d | 9600 | |
e054468f AM |
9601 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9602 | if (ent->addend == rel->r_addend | |
9603 | && ent->plt.offset != (bfd_vma) -1) | |
9604 | { | |
e054468f AM |
9605 | *plt_ent = ent; |
9606 | return ppc_stub_plt_call; | |
9607 | } | |
5bd4f169 | 9608 | |
7fe2b9a6 AM |
9609 | /* Here, we know we don't have a plt entry. If we don't have a |
9610 | either a defined function descriptor or a defined entry symbol | |
9611 | in a regular object file, then it is pointless trying to make | |
9612 | any other type of stub. */ | |
854b41e7 AM |
9613 | if (!is_static_defined (&fdh->elf) |
9614 | && !is_static_defined (&h->elf)) | |
721956f4 | 9615 | return ppc_stub_none; |
5d1634d7 | 9616 | } |
e054468f AM |
9617 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9618 | { | |
9619 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9620 | struct plt_entry **local_plt = (struct plt_entry **) | |
9621 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9622 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9623 | ||
9624 | if (local_plt[r_symndx] != NULL) | |
9625 | { | |
9626 | struct plt_entry *ent; | |
9627 | ||
9628 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9629 | if (ent->addend == rel->r_addend | |
9630 | && ent->plt.offset != (bfd_vma) -1) | |
9631 | { | |
9632 | *plt_ent = ent; | |
9633 | return ppc_stub_plt_call; | |
9634 | } | |
9635 | } | |
9636 | } | |
5d1634d7 | 9637 | |
721956f4 AM |
9638 | /* Determine where the call point is. */ |
9639 | location = (input_sec->output_offset | |
9640 | + input_sec->output_section->vma | |
9641 | + rel->r_offset); | |
5d1634d7 | 9642 | |
721956f4 AM |
9643 | branch_offset = destination - location; |
9644 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9645 | |
721956f4 AM |
9646 | /* Determine if a long branch stub is needed. */ |
9647 | max_branch_offset = 1 << 25; | |
4ce794b7 | 9648 | if (r_type != R_PPC64_REL24) |
721956f4 | 9649 | max_branch_offset = 1 << 15; |
5d1634d7 | 9650 | |
721956f4 AM |
9651 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
9652 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
9653 | is needed later. */ | |
9654 | return ppc_stub_long_branch; | |
5d1634d7 | 9655 | |
721956f4 | 9656 | return ppc_stub_none; |
5d1634d7 AM |
9657 | } |
9658 | ||
794e51c0 AM |
9659 | /* With power7 weakly ordered memory model, it is possible for ld.so |
9660 | to update a plt entry in one thread and have another thread see a | |
9661 | stale zero toc entry. To avoid this we need some sort of acquire | |
9662 | barrier in the call stub. One solution is to make the load of the | |
9663 | toc word seem to appear to depend on the load of the function entry | |
9664 | word. Another solution is to test for r2 being zero, and branch to | |
9665 | the appropriate glink entry if so. | |
9666 | ||
9667 | . fake dep barrier compare | |
9668 | . ld 11,xxx(2) ld 11,xxx(2) | |
9669 | . mtctr 11 mtctr 11 | |
9670 | . xor 11,11,11 ld 2,xxx+8(2) | |
9671 | . add 2,2,11 cmpldi 2,0 | |
9672 | . ld 2,xxx+8(2) bnectr+ | |
9673 | . bctr b <glink_entry> | |
9674 | ||
9675 | The solution involving the compare turns out to be faster, so | |
9676 | that's what we use unless the branch won't reach. */ | |
9677 | ||
9678 | #define ALWAYS_USE_FAKE_DEP 0 | |
9679 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 9680 | |
5d1634d7 AM |
9681 | #define PPC_LO(v) ((v) & 0xffff) |
9682 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9683 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9684 | ||
794e51c0 AM |
9685 | static inline unsigned int |
9686 | plt_stub_size (struct ppc_link_hash_table *htab, | |
9687 | struct ppc_stub_hash_entry *stub_entry, | |
9688 | bfd_vma off) | |
9689 | { | |
9690 | unsigned size = PLT_CALL_STUB_SIZE; | |
9691 | ||
9692 | if (!(ALWAYS_EMIT_R2SAVE | |
9693 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
9694 | size -= 4; | |
9695 | if (!htab->plt_static_chain) | |
9696 | size -= 4; | |
9697 | if (htab->plt_thread_safe) | |
9698 | size += 8; | |
9699 | if (PPC_HA (off) == 0) | |
9700 | size -= 4; | |
9701 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) | |
9702 | size += 4; | |
9703 | if (stub_entry->h != NULL | |
9704 | && (stub_entry->h == htab->tls_get_addr_fd | |
9705 | || stub_entry->h == htab->tls_get_addr) | |
9706 | && !htab->no_tls_get_addr_opt) | |
9707 | size += 13 * 4; | |
9708 | return size; | |
9709 | } | |
9710 | ||
9711 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
9712 | then return the padding needed to do so. */ | |
9713 | static inline unsigned int | |
9714 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
9715 | struct ppc_stub_hash_entry *stub_entry, | |
9716 | bfd_vma plt_off) | |
9717 | { | |
9718 | int stub_align = 1 << htab->plt_stub_align; | |
9719 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); | |
9720 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
9721 | ||
9722 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
9723 | > (stub_size & -stub_align)) | |
9724 | return stub_align - (stub_off & (stub_align - 1)); | |
9725 | return 0; | |
9726 | } | |
9727 | ||
9728 | /* Build a .plt call stub. */ | |
9729 | ||
9730 | static inline bfd_byte * | |
9731 | build_plt_stub (struct ppc_link_hash_table *htab, | |
9732 | struct ppc_stub_hash_entry *stub_entry, | |
9733 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
9734 | { | |
9735 | bfd *obfd = htab->stub_bfd; | |
9736 | bfd_boolean plt_static_chain = htab->plt_static_chain; | |
9737 | bfd_boolean plt_thread_safe = htab->plt_thread_safe; | |
9738 | bfd_boolean use_fake_dep = plt_thread_safe; | |
9739 | bfd_vma cmp_branch_off = 0; | |
9740 | ||
9741 | if (!ALWAYS_USE_FAKE_DEP | |
9742 | && plt_thread_safe | |
9743 | && !(stub_entry->h != NULL | |
9744 | && (stub_entry->h == htab->tls_get_addr_fd | |
9745 | || stub_entry->h == htab->tls_get_addr) | |
9746 | && !htab->no_tls_get_addr_opt)) | |
9747 | { | |
9748 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
9749 | bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9750 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; | |
9751 | bfd_vma to, from; | |
9752 | ||
68d62958 AM |
9753 | if (pltindex > 32768) |
9754 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
9755 | to = (glinkoff |
9756 | + htab->glink->output_offset | |
9757 | + htab->glink->output_section->vma); | |
9758 | from = (p - stub_entry->stub_sec->contents | |
9759 | + 4 * (ALWAYS_EMIT_R2SAVE | |
9760 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9761 | + 4 * (PPC_HA (offset) != 0) | |
9762 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
9763 | != PPC_HA (offset)) | |
9764 | + 4 * (plt_static_chain != 0) | |
9765 | + 20 | |
9766 | + stub_entry->stub_sec->output_offset | |
9767 | + stub_entry->stub_sec->output_section->vma); | |
9768 | cmp_branch_off = to - from; | |
9769 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
9770 | } | |
9771 | ||
ac2df442 AM |
9772 | if (PPC_HA (offset) != 0) |
9773 | { | |
176a0d42 AM |
9774 | if (r != NULL) |
9775 | { | |
794e51c0 AM |
9776 | if (ALWAYS_EMIT_R2SAVE |
9777 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9778 | r[0].r_offset += 4; | |
176a0d42 | 9779 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 9780 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
9781 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9782 | r[1].r_addend = r[0].r_addend; | |
c7131b65 | 9783 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9784 | { |
9785 | r[2].r_offset = r[1].r_offset + 4; | |
9786 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9787 | r[2].r_addend = r[0].r_addend; | |
9788 | } | |
9789 | else | |
9790 | { | |
794e51c0 | 9791 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; |
176a0d42 AM |
9792 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9793 | r[2].r_addend = r[0].r_addend + 8; | |
c7131b65 AM |
9794 | if (plt_static_chain) |
9795 | { | |
9796 | r[3].r_offset = r[2].r_offset + 4; | |
9797 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9798 | r[3].r_addend = r[0].r_addend + 16; | |
9799 | } | |
176a0d42 AM |
9800 | } |
9801 | } | |
794e51c0 AM |
9802 | if (ALWAYS_EMIT_R2SAVE |
9803 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9804 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
3b421ab3 | 9805 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ac2df442 | 9806 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
9df0ef5f | 9807 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9808 | { |
9809 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
9810 | offset = 0; | |
9811 | } | |
9812 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
794e51c0 AM |
9813 | if (use_fake_dep) |
9814 | { | |
9815 | bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4; | |
9816 | bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4; | |
9817 | } | |
ac2df442 | 9818 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; |
9df0ef5f AM |
9819 | if (plt_static_chain) |
9820 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 AM |
9821 | } |
9822 | else | |
9823 | { | |
176a0d42 AM |
9824 | if (r != NULL) |
9825 | { | |
794e51c0 AM |
9826 | if (ALWAYS_EMIT_R2SAVE |
9827 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9828 | r[0].r_offset += 4; | |
176a0d42 | 9829 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
c7131b65 | 9830 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9831 | { |
9832 | r[1].r_offset = r[0].r_offset + 4; | |
9833 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9834 | r[1].r_addend = r[0].r_addend; | |
9835 | } | |
9836 | else | |
9837 | { | |
794e51c0 | 9838 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; |
176a0d42 | 9839 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
c7131b65 AM |
9840 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; |
9841 | if (plt_static_chain) | |
9842 | { | |
9843 | r[2].r_offset = r[1].r_offset + 4; | |
9844 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9845 | r[2].r_addend = r[0].r_addend + 8; | |
9846 | } | |
176a0d42 AM |
9847 | } |
9848 | } | |
794e51c0 AM |
9849 | if (ALWAYS_EMIT_R2SAVE |
9850 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9851 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
ac2df442 | 9852 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; |
9df0ef5f | 9853 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9854 | { |
9855 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9856 | offset = 0; | |
9857 | } | |
9858 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
794e51c0 AM |
9859 | if (use_fake_dep) |
9860 | { | |
9861 | bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4; | |
9862 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
9863 | } | |
9df0ef5f AM |
9864 | if (plt_static_chain) |
9865 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 | 9866 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; |
ac2df442 | 9867 | } |
794e51c0 AM |
9868 | if (plt_thread_safe && !use_fake_dep) |
9869 | { | |
9870 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
9871 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 9872 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
9873 | } |
9874 | else | |
9875 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
9876 | return p; |
9877 | } | |
9878 | ||
a7f2871e AM |
9879 | /* Build a special .plt call stub for __tls_get_addr. */ |
9880 | ||
9881 | #define LD_R11_0R3 0xe9630000 | |
9882 | #define LD_R12_0R3 0xe9830000 | |
9883 | #define MR_R0_R3 0x7c601b78 | |
9884 | #define CMPDI_R11_0 0x2c2b0000 | |
9885 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9886 | #define BEQLR 0x4d820020 | |
9887 | #define MR_R3_R0 0x7c030378 | |
9888 | #define MFLR_R11 0x7d6802a6 | |
9889 | #define STD_R11_0R1 0xf9610000 | |
9890 | #define BCTRL 0x4e800421 | |
9891 | #define LD_R11_0R1 0xe9610000 | |
9892 | #define LD_R2_0R1 0xe8410000 | |
9893 | #define MTLR_R11 0x7d6803a6 | |
9894 | ||
9895 | static inline bfd_byte * | |
794e51c0 AM |
9896 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
9897 | struct ppc_stub_hash_entry *stub_entry, | |
9898 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 9899 | { |
794e51c0 AM |
9900 | bfd *obfd = htab->stub_bfd; |
9901 | ||
a7f2871e AM |
9902 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
9903 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9904 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9905 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9906 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9907 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9908 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9909 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
9910 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
9911 | ||
9912 | if (r != NULL) | |
9913 | r[0].r_offset += 9 * 4; | |
794e51c0 | 9914 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
9915 | bfd_put_32 (obfd, BCTRL, p - 4); |
9916 | ||
9917 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
9918 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
9919 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
9920 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9921 | ||
9922 | return p; | |
9923 | } | |
9924 | ||
176a0d42 AM |
9925 | static Elf_Internal_Rela * |
9926 | get_relocs (asection *sec, int count) | |
9927 | { | |
9928 | Elf_Internal_Rela *relocs; | |
9929 | struct bfd_elf_section_data *elfsec_data; | |
9930 | ||
9931 | elfsec_data = elf_section_data (sec); | |
9932 | relocs = elfsec_data->relocs; | |
9933 | if (relocs == NULL) | |
9934 | { | |
9935 | bfd_size_type relsize; | |
9936 | relsize = sec->reloc_count * sizeof (*relocs); | |
9937 | relocs = bfd_alloc (sec->owner, relsize); | |
9938 | if (relocs == NULL) | |
9939 | return NULL; | |
9940 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
9941 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
9942 | sizeof (Elf_Internal_Shdr)); | |
9943 | if (elfsec_data->rela.hdr == NULL) | |
9944 | return NULL; | |
9945 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
9946 | * sizeof (Elf64_External_Rela)); | |
9947 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
9948 | sec->reloc_count = 0; |
9949 | } | |
9950 | relocs += sec->reloc_count; | |
9951 | sec->reloc_count += count; | |
9952 | return relocs; | |
9953 | } | |
9954 | ||
aa374f67 | 9955 | static bfd_vma |
25f53a85 | 9956 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
9957 | struct ppc_stub_hash_entry *stub_entry) |
9958 | { | |
25f53a85 | 9959 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
9960 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
9961 | ||
9962 | if (r2off == 0) | |
9963 | { | |
9964 | /* Support linking -R objects. Get the toc pointer from the | |
9965 | opd entry. */ | |
9966 | char buf[8]; | |
9967 | asection *opd = stub_entry->h->elf.root.u.def.section; | |
9968 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
9969 | ||
9970 | if (strcmp (opd->name, ".opd") != 0 | |
9971 | || opd->reloc_count != 0) | |
9972 | { | |
bc30df16 | 9973 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 9974 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
9975 | bfd_set_error (bfd_error_bad_value); |
9976 | return 0; | |
9977 | } | |
9978 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
9979 | return 0; | |
9980 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 9981 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
9982 | } |
9983 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
9984 | return r2off; | |
9985 | } | |
9986 | ||
b34976b6 | 9987 | static bfd_boolean |
4ce794b7 | 9988 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9989 | { |
721956f4 AM |
9990 | struct ppc_stub_hash_entry *stub_entry; |
9991 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9992 | struct bfd_link_info *info; |
9993 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9994 | bfd_byte *loc; |
9995 | bfd_byte *p; | |
ee75fd95 | 9996 | bfd_vma dest, off; |
721956f4 | 9997 | int size; |
176a0d42 | 9998 | Elf_Internal_Rela *r; |
e054468f | 9999 | asection *plt; |
5d1634d7 | 10000 | |
721956f4 AM |
10001 | /* Massage our args to the form they really have. */ |
10002 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10003 | info = in_arg; |
5d1634d7 | 10004 | |
5d1634d7 | 10005 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10006 | if (htab == NULL) |
10007 | return FALSE; | |
5d1634d7 | 10008 | |
721956f4 | 10009 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10010 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10011 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10012 | |
4ce794b7 | 10013 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10014 | switch (stub_entry->stub_type) |
5d1634d7 | 10015 | { |
721956f4 | 10016 | case ppc_stub_long_branch: |
ad8e1ba5 | 10017 | case ppc_stub_long_branch_r2off: |
721956f4 | 10018 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
10019 | off = dest = (stub_entry->target_value |
10020 | + stub_entry->target_section->output_offset | |
10021 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 10022 | |
721956f4 AM |
10023 | /* And this is where we are coming from. */ |
10024 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10025 | + stub_entry->stub_sec->output_offset |
10026 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10027 | |
ac2df442 AM |
10028 | size = 4; |
10029 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10030 | { |
25f53a85 | 10031 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10032 | |
aa374f67 AM |
10033 | if (r2off == 0) |
10034 | { | |
10035 | htab->stub_error = TRUE; | |
10036 | return FALSE; | |
10037 | } | |
97b639ba | 10038 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 10039 | loc += 4; |
ac2df442 AM |
10040 | size = 12; |
10041 | if (PPC_HA (r2off) != 0) | |
10042 | { | |
10043 | size = 16; | |
10044 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10045 | loc += 4; | |
10046 | } | |
97b639ba | 10047 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10048 | loc += 4; |
ac2df442 | 10049 | off -= size - 4; |
ad8e1ba5 | 10050 | } |
97b639ba | 10051 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10052 | |
5c3dead3 AM |
10053 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10054 | { | |
bc30df16 AM |
10055 | info->callbacks->einfo |
10056 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10057 | stub_entry->root.string); | |
5c3dead3 AM |
10058 | htab->stub_error = TRUE; |
10059 | return FALSE; | |
10060 | } | |
ee75fd95 AM |
10061 | |
10062 | if (info->emitrelocations) | |
10063 | { | |
176a0d42 AM |
10064 | r = get_relocs (stub_entry->stub_sec, 1); |
10065 | if (r == NULL) | |
10066 | return FALSE; | |
ee75fd95 AM |
10067 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10068 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10069 | r->r_addend = dest; | |
10070 | if (stub_entry->h != NULL) | |
10071 | { | |
10072 | struct elf_link_hash_entry **hashes; | |
10073 | unsigned long symndx; | |
10074 | struct ppc_link_hash_entry *h; | |
10075 | ||
10076 | hashes = elf_sym_hashes (htab->stub_bfd); | |
10077 | if (hashes == NULL) | |
10078 | { | |
10079 | bfd_size_type hsize; | |
10080 | ||
10081 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10082 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
10083 | if (hashes == NULL) | |
10084 | return FALSE; | |
10085 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
10086 | htab->stub_globals = 1; | |
10087 | } | |
10088 | symndx = htab->stub_globals++; | |
10089 | h = stub_entry->h; | |
10090 | hashes[symndx] = &h->elf; | |
10091 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10092 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10093 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10094 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10095 | /* H is an opd symbol. The addend must be zero. */ | |
10096 | r->r_addend = 0; | |
10097 | else | |
10098 | { | |
10099 | off = (h->elf.root.u.def.value | |
10100 | + h->elf.root.u.def.section->output_offset | |
10101 | + h->elf.root.u.def.section->output_section->vma); | |
10102 | r->r_addend -= off; | |
10103 | } | |
10104 | } | |
10105 | } | |
721956f4 | 10106 | break; |
e86ce104 | 10107 | |
721956f4 | 10108 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10109 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10110 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10111 | stub_entry->root.string + 9, | |
b34976b6 | 10112 | FALSE, FALSE); |
721956f4 AM |
10113 | if (br_entry == NULL) |
10114 | { | |
8de848d8 | 10115 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10116 | stub_entry->root.string); |
b34976b6 AM |
10117 | htab->stub_error = TRUE; |
10118 | return FALSE; | |
721956f4 AM |
10119 | } |
10120 | ||
176a0d42 AM |
10121 | dest = (stub_entry->target_value |
10122 | + stub_entry->target_section->output_offset | |
10123 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 10124 | |
176a0d42 | 10125 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10126 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10127 | |
f94498ff | 10128 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10129 | { |
f94498ff | 10130 | br_entry->iter = 0; |
84f5d08e | 10131 | |
f94498ff | 10132 | if (htab->relbrlt != NULL) |
84f5d08e | 10133 | { |
f94498ff AM |
10134 | /* Create a reloc for the branch lookup table entry. */ |
10135 | Elf_Internal_Rela rela; | |
10136 | bfd_byte *rl; | |
10137 | ||
10138 | rela.r_offset = (br_entry->offset | |
10139 | + htab->brlt->output_offset | |
10140 | + htab->brlt->output_section->vma); | |
10141 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10142 | rela.r_addend = dest; |
f94498ff AM |
10143 | |
10144 | rl = htab->relbrlt->contents; | |
10145 | rl += (htab->relbrlt->reloc_count++ | |
10146 | * sizeof (Elf64_External_Rela)); | |
10147 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10148 | } | |
10149 | else if (info->emitrelocations) | |
10150 | { | |
176a0d42 AM |
10151 | r = get_relocs (htab->brlt, 1); |
10152 | if (r == NULL) | |
10153 | return FALSE; | |
10154 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10155 | normal reloc processing. Symbols and offsets are not | |
10156 | translated from input file to output file form, so | |
10157 | set up the offset per the output file. */ | |
f94498ff AM |
10158 | r->r_offset = (br_entry->offset |
10159 | + htab->brlt->output_offset | |
10160 | + htab->brlt->output_section->vma); | |
10161 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10162 | r->r_addend = dest; |
84f5d08e | 10163 | } |
84f5d08e | 10164 | } |
721956f4 | 10165 | |
176a0d42 AM |
10166 | dest = (br_entry->offset |
10167 | + htab->brlt->output_offset | |
10168 | + htab->brlt->output_section->vma); | |
10169 | ||
10170 | off = (dest | |
4ce794b7 | 10171 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10172 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10173 | |
ad8e1ba5 | 10174 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10175 | { |
25f53a85 | 10176 | info->callbacks->einfo |
bc30df16 | 10177 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10178 | stub_entry->root.string); |
5d1634d7 | 10179 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10180 | htab->stub_error = TRUE; |
10181 | return FALSE; | |
5d1634d7 | 10182 | } |
41bd81ab | 10183 | |
176a0d42 AM |
10184 | if (info->emitrelocations) |
10185 | { | |
10186 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10187 | if (r == NULL) | |
10188 | return FALSE; | |
10189 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10190 | if (bfd_big_endian (info->output_bfd)) |
10191 | r[0].r_offset += 2; | |
176a0d42 AM |
10192 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
10193 | r[0].r_offset += 4; | |
10194 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10195 | r[0].r_addend = dest; | |
10196 | if (PPC_HA (off) != 0) | |
10197 | { | |
10198 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10199 | r[1].r_offset = r[0].r_offset + 4; | |
10200 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10201 | r[1].r_addend = r[0].r_addend; | |
10202 | } | |
10203 | } | |
10204 | ||
ad8e1ba5 AM |
10205 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10206 | { | |
176a0d42 | 10207 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10208 | { |
10209 | size = 16; | |
176a0d42 | 10210 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10211 | loc += 4; |
176a0d42 | 10212 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10213 | } |
10214 | else | |
10215 | { | |
10216 | size = 12; | |
176a0d42 | 10217 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 10218 | } |
ad8e1ba5 AM |
10219 | } |
10220 | else | |
10221 | { | |
25f53a85 | 10222 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10223 | |
10224 | if (r2off == 0) | |
10225 | { | |
10226 | htab->stub_error = TRUE; | |
10227 | return FALSE; | |
10228 | } | |
ad8e1ba5 | 10229 | |
97b639ba | 10230 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 10231 | loc += 4; |
ac2df442 | 10232 | size = 20; |
176a0d42 | 10233 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10234 | { |
10235 | size += 4; | |
176a0d42 | 10236 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10237 | loc += 4; |
176a0d42 | 10238 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10239 | loc += 4; |
10240 | } | |
10241 | else | |
10242 | { | |
176a0d42 | 10243 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10244 | loc += 4; |
10245 | } | |
10246 | ||
10247 | if (PPC_HA (r2off) != 0) | |
10248 | { | |
10249 | size += 4; | |
10250 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10251 | loc += 4; | |
10252 | } | |
97b639ba | 10253 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
10254 | } |
10255 | loc += 4; | |
97b639ba | 10256 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 10257 | loc += 4; |
97b639ba | 10258 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 10259 | break; |
5d1634d7 | 10260 | |
721956f4 | 10261 | case ppc_stub_plt_call: |
794e51c0 | 10262 | case ppc_stub_plt_call_r2save: |
e054468f | 10263 | if (stub_entry->h != NULL |
b31867b6 AM |
10264 | && stub_entry->h->is_func_descriptor |
10265 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10266 | { |
b31867b6 AM |
10267 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10268 | ||
10269 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10270 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10271 | FIXME: We used to define the symbol on one of the call | |
10272 | stubs instead, which is why we test symbol section id | |
10273 | against htab->top_id in various places. Likely all | |
10274 | these checks could now disappear. */ | |
10275 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10276 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10277 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10278 | fh->was_undefined = 0; | |
c862ae31 AM |
10279 | } |
10280 | ||
721956f4 | 10281 | /* Now build the stub. */ |
e054468f | 10282 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10283 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10284 | abort (); |
10285 | ||
e054468f | 10286 | plt = htab->plt; |
25f23106 AM |
10287 | if (!htab->elf.dynamic_sections_created |
10288 | || stub_entry->h == NULL | |
10289 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
10290 | plt = htab->iplt; |
10291 | ||
10292 | dest += plt->output_offset + plt->output_section->vma; | |
10293 | ||
10294 | if (stub_entry->h == NULL | |
10295 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10296 | { | |
10297 | Elf_Internal_Rela rela; | |
10298 | bfd_byte *rl; | |
10299 | ||
10300 | rela.r_offset = dest; | |
25f23106 | 10301 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
10302 | rela.r_addend = (stub_entry->target_value |
10303 | + stub_entry->target_section->output_offset | |
10304 | + stub_entry->target_section->output_section->vma); | |
10305 | ||
25f23106 AM |
10306 | rl = (htab->reliplt->contents |
10307 | + (htab->reliplt->reloc_count++ | |
10308 | * sizeof (Elf64_External_Rela))); | |
10309 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10310 | stub_entry->plt_ent->plt.offset |= 1; |
10311 | } | |
176a0d42 AM |
10312 | |
10313 | off = (dest | |
e054468f | 10314 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10315 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10316 | |
ad8e1ba5 | 10317 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10318 | { |
25f53a85 | 10319 | info->callbacks->einfo |
bc30df16 | 10320 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10321 | stub_entry->h != NULL |
10322 | ? stub_entry->h->elf.root.root.string | |
10323 | : "<local sym>"); | |
721956f4 | 10324 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10325 | htab->stub_error = TRUE; |
10326 | return FALSE; | |
721956f4 AM |
10327 | } |
10328 | ||
794e51c0 AM |
10329 | if (htab->plt_stub_align != 0) |
10330 | { | |
10331 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10332 | ||
10333 | stub_entry->stub_sec->size += pad; | |
10334 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10335 | loc += pad; | |
10336 | } | |
10337 | ||
176a0d42 AM |
10338 | r = NULL; |
10339 | if (info->emitrelocations) | |
10340 | { | |
10341 | r = get_relocs (stub_entry->stub_sec, | |
c7131b65 AM |
10342 | (2 |
10343 | + (PPC_HA (off) != 0) | |
10344 | + (htab->plt_static_chain | |
10345 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
176a0d42 AM |
10346 | if (r == NULL) |
10347 | return FALSE; | |
10348 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10349 | if (bfd_big_endian (info->output_bfd)) |
10350 | r[0].r_offset += 2; | |
176a0d42 AM |
10351 | r[0].r_addend = dest; |
10352 | } | |
a7f2871e AM |
10353 | if (stub_entry->h != NULL |
10354 | && (stub_entry->h == htab->tls_get_addr_fd | |
10355 | || stub_entry->h == htab->tls_get_addr) | |
10356 | && !htab->no_tls_get_addr_opt) | |
794e51c0 | 10357 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10358 | else |
794e51c0 | 10359 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10360 | size = p - loc; |
10361 | break; | |
10362 | ||
10363 | default: | |
10364 | BFD_FAIL (); | |
b34976b6 | 10365 | return FALSE; |
721956f4 AM |
10366 | } |
10367 | ||
eea6121a | 10368 | stub_entry->stub_sec->size += size; |
97b639ba | 10369 | |
ee75fd95 | 10370 | if (htab->emit_stub_syms) |
97b639ba AM |
10371 | { |
10372 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10373 | size_t len1, len2; |
10374 | char *name; | |
10375 | const char *const stub_str[] = { "long_branch", | |
10376 | "long_branch_r2off", | |
10377 | "plt_branch", | |
10378 | "plt_branch_r2off", | |
794e51c0 | 10379 | "plt_call", |
ee75fd95 AM |
10380 | "plt_call" }; |
10381 | ||
10382 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10383 | len2 = strlen (stub_entry->root.string); | |
10384 | name = bfd_malloc (len1 + len2 + 2); | |
10385 | if (name == NULL) | |
10386 | return FALSE; | |
10387 | memcpy (name, stub_entry->root.string, 9); | |
10388 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10389 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10390 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10391 | if (h == NULL) |
10392 | return FALSE; | |
10393 | if (h->root.type == bfd_link_hash_new) | |
10394 | { | |
10395 | h->root.type = bfd_link_hash_defined; | |
10396 | h->root.u.def.section = stub_entry->stub_sec; | |
10397 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10398 | h->ref_regular = 1; |
10399 | h->def_regular = 1; | |
10400 | h->ref_regular_nonweak = 1; | |
10401 | h->forced_local = 1; | |
10402 | h->non_elf = 0; | |
97b639ba AM |
10403 | } |
10404 | } | |
10405 | ||
b34976b6 | 10406 | return TRUE; |
721956f4 AM |
10407 | } |
10408 | ||
10409 | /* As above, but don't actually build the stub. Just bump offset so | |
10410 | we know stub section sizes, and select plt_branch stubs where | |
10411 | long_branch stubs won't do. */ | |
10412 | ||
b34976b6 | 10413 | static bfd_boolean |
4ce794b7 | 10414 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10415 | { |
10416 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10417 | struct bfd_link_info *info; |
721956f4 AM |
10418 | struct ppc_link_hash_table *htab; |
10419 | bfd_vma off; | |
10420 | int size; | |
10421 | ||
10422 | /* Massage our args to the form they really have. */ | |
10423 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10424 | info = in_arg; |
10425 | ||
10426 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10427 | if (htab == NULL) |
10428 | return FALSE; | |
721956f4 | 10429 | |
794e51c0 AM |
10430 | if (stub_entry->stub_type == ppc_stub_plt_call |
10431 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10432 | { |
e054468f AM |
10433 | asection *plt; |
10434 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10435 | if (off >= (bfd_vma) -2) |
411e1bfb | 10436 | abort (); |
e054468f | 10437 | plt = htab->plt; |
25f23106 AM |
10438 | if (!htab->elf.dynamic_sections_created |
10439 | || stub_entry->h == NULL | |
10440 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
10441 | plt = htab->iplt; |
10442 | off += (plt->output_offset | |
10443 | + plt->output_section->vma | |
10444 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10445 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10446 | |
794e51c0 AM |
10447 | size = plt_stub_size (htab, stub_entry, off); |
10448 | if (htab->plt_stub_align) | |
10449 | size += plt_stub_pad (htab, stub_entry, off); | |
176a0d42 AM |
10450 | if (info->emitrelocations) |
10451 | { | |
10452 | stub_entry->stub_sec->reloc_count | |
c7131b65 AM |
10453 | += (2 |
10454 | + (PPC_HA (off) != 0) | |
10455 | + (htab->plt_static_chain | |
10456 | && PPC_HA (off + 16) == PPC_HA (off))); | |
176a0d42 AM |
10457 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10458 | } | |
721956f4 AM |
10459 | } |
10460 | else | |
10461 | { | |
ad8e1ba5 AM |
10462 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10463 | variants. */ | |
ac2df442 AM |
10464 | bfd_vma r2off = 0; |
10465 | ||
721956f4 AM |
10466 | off = (stub_entry->target_value |
10467 | + stub_entry->target_section->output_offset | |
10468 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10469 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10470 | + stub_entry->stub_sec->output_offset |
10471 | + stub_entry->stub_sec->output_section->vma); | |
10472 | ||
ad8e1ba5 AM |
10473 | /* Reset the stub type from the plt variant in case we now |
10474 | can reach with a shorter stub. */ | |
10475 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10476 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10477 | ||
10478 | size = 4; | |
10479 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10480 | { | |
25f53a85 | 10481 | r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10482 | if (r2off == 0) |
10483 | { | |
10484 | htab->stub_error = TRUE; | |
10485 | return FALSE; | |
10486 | } | |
ac2df442 AM |
10487 | size = 12; |
10488 | if (PPC_HA (r2off) != 0) | |
10489 | size = 16; | |
10490 | off -= size - 4; | |
ad8e1ba5 AM |
10491 | } |
10492 | ||
10493 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
10494 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10495 | { | |
10496 | struct ppc_branch_hash_entry *br_entry; | |
10497 | ||
10498 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10499 | stub_entry->root.string + 9, | |
b34976b6 | 10500 | TRUE, FALSE); |
721956f4 AM |
10501 | if (br_entry == NULL) |
10502 | { | |
8de848d8 | 10503 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10504 | stub_entry->root.string); |
b34976b6 AM |
10505 | htab->stub_error = TRUE; |
10506 | return FALSE; | |
721956f4 AM |
10507 | } |
10508 | ||
10509 | if (br_entry->iter != htab->stub_iteration) | |
10510 | { | |
10511 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10512 | br_entry->offset = htab->brlt->size; |
10513 | htab->brlt->size += 8; | |
63bc6f6c | 10514 | |
ee75fd95 | 10515 | if (htab->relbrlt != NULL) |
eea6121a | 10516 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10517 | else if (info->emitrelocations) |
10518 | { | |
10519 | htab->brlt->reloc_count += 1; | |
10520 | htab->brlt->flags |= SEC_RELOC; | |
10521 | } | |
721956f4 | 10522 | } |
ad8e1ba5 AM |
10523 | |
10524 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10525 | off = (br_entry->offset |
10526 | + htab->brlt->output_offset | |
10527 | + htab->brlt->output_section->vma | |
10528 | - elf_gp (htab->brlt->output_section->owner) | |
10529 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10530 | ||
176a0d42 AM |
10531 | if (info->emitrelocations) |
10532 | { | |
10533 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10534 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10535 | } | |
10536 | ||
ac2df442 AM |
10537 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10538 | { | |
10539 | size = 12; | |
176a0d42 | 10540 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10541 | size = 16; |
10542 | } | |
10543 | else | |
10544 | { | |
10545 | size = 20; | |
176a0d42 | 10546 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10547 | size += 4; |
10548 | ||
10549 | if (PPC_HA (r2off) != 0) | |
10550 | size += 4; | |
10551 | } | |
721956f4 | 10552 | } |
84f5d08e AM |
10553 | else if (info->emitrelocations) |
10554 | { | |
10555 | stub_entry->stub_sec->reloc_count += 1; | |
10556 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10557 | } | |
721956f4 AM |
10558 | } |
10559 | ||
eea6121a | 10560 | stub_entry->stub_sec->size += size; |
b34976b6 | 10561 | return TRUE; |
721956f4 AM |
10562 | } |
10563 | ||
10564 | /* Set up various things so that we can make a list of input sections | |
10565 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10566 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10567 | |
10568 | int | |
927be08e AM |
10569 | ppc64_elf_setup_section_lists |
10570 | (struct bfd_link_info *info, | |
10571 | asection *(*add_stub_section) (const char *, asection *), | |
10572 | void (*layout_sections_again) (void)) | |
721956f4 AM |
10573 | { |
10574 | bfd *input_bfd; | |
734b6cf9 | 10575 | int top_id, top_index, id; |
721956f4 | 10576 | asection *section; |
734b6cf9 | 10577 | asection **input_list; |
721956f4 AM |
10578 | bfd_size_type amt; |
10579 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10580 | ||
4dfe6ac6 NC |
10581 | if (htab == NULL) |
10582 | return -1; | |
927be08e AM |
10583 | /* Stash our params away. */ |
10584 | htab->add_stub_section = add_stub_section; | |
10585 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 10586 | |
1e2f5b6e | 10587 | /* Find the top input section id. */ |
3d6f9012 | 10588 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
10589 | input_bfd != NULL; |
10590 | input_bfd = input_bfd->link_next) | |
10591 | { | |
721956f4 AM |
10592 | for (section = input_bfd->sections; |
10593 | section != NULL; | |
10594 | section = section->next) | |
10595 | { | |
10596 | if (top_id < section->id) | |
10597 | top_id = section->id; | |
10598 | } | |
10599 | } | |
721956f4 | 10600 | |
8f3bab57 | 10601 | htab->top_id = top_id; |
721956f4 | 10602 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 10603 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
10604 | if (htab->stub_group == NULL) |
10605 | return -1; | |
10606 | ||
3d6f9012 AM |
10607 | /* Set toc_off for com, und, abs and ind sections. */ |
10608 | for (id = 0; id < 3; id++) | |
10609 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 10610 | |
734b6cf9 AM |
10611 | /* We can't use output_bfd->section_count here to find the top output |
10612 | section index as some sections may have been removed, and | |
8423293d | 10613 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 10614 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
10615 | section != NULL; |
10616 | section = section->next) | |
10617 | { | |
10618 | if (top_index < section->index) | |
10619 | top_index = section->index; | |
10620 | } | |
10621 | ||
10622 | htab->top_index = top_index; | |
10623 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 10624 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
10625 | htab->input_list = input_list; |
10626 | if (input_list == NULL) | |
10627 | return -1; | |
10628 | ||
721956f4 AM |
10629 | return 1; |
10630 | } | |
10631 | ||
927be08e AM |
10632 | /* Set up for first pass at multitoc partitioning. */ |
10633 | ||
10634 | void | |
10635 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
10636 | { | |
10637 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10638 | ||
1c865ab2 | 10639 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
10640 | htab->toc_bfd = NULL; |
10641 | htab->toc_first_sec = NULL; | |
10642 | } | |
10643 | ||
e717da7e AM |
10644 | /* The linker repeatedly calls this function for each TOC input section |
10645 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 10646 | within a group is less than 64k in size. */ |
ad8e1ba5 | 10647 | |
927be08e | 10648 | bfd_boolean |
4ce794b7 | 10649 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
10650 | { |
10651 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 10652 | bfd_vma addr, off, limit; |
ad8e1ba5 | 10653 | |
4dfe6ac6 NC |
10654 | if (htab == NULL) |
10655 | return FALSE; | |
10656 | ||
927be08e | 10657 | if (!htab->second_toc_pass) |
4c52953f | 10658 | { |
927be08e | 10659 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
10660 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
10661 | ||
10662 | if (new_bfd) | |
bf102f86 AM |
10663 | { |
10664 | htab->toc_bfd = isec->owner; | |
10665 | htab->toc_first_sec = isec; | |
10666 | } | |
927be08e | 10667 | |
bf102f86 AM |
10668 | addr = isec->output_offset + isec->output_section->vma; |
10669 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
10670 | limit = 0x80008000; |
10671 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
10672 | limit = 0x10000; | |
10673 | if (off + isec->size > limit) | |
bf102f86 AM |
10674 | { |
10675 | addr = (htab->toc_first_sec->output_offset | |
10676 | + htab->toc_first_sec->output_section->vma); | |
10677 | htab->toc_curr = addr; | |
10678 | } | |
99877b66 | 10679 | |
927be08e AM |
10680 | /* toc_curr is the base address of this toc group. Set elf_gp |
10681 | for the input section to be the offset relative to the | |
10682 | output toc base plus 0x8000. Making the input elf_gp an | |
10683 | offset allows us to move the toc as a whole without | |
10684 | recalculating input elf_gp. */ | |
10685 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
10686 | off += TOC_BASE_OFF; | |
10687 | ||
10688 | /* Die if someone uses a linker script that doesn't keep input | |
10689 | file .toc and .got together. */ | |
a4fd3de5 AM |
10690 | if (new_bfd |
10691 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
10692 | && elf_gp (isec->owner) != off) |
10693 | return FALSE; | |
10694 | ||
10695 | elf_gp (isec->owner) = off; | |
10696 | return TRUE; | |
4c52953f | 10697 | } |
927be08e AM |
10698 | |
10699 | /* During the second pass toc_first_sec points to the start of | |
10700 | a toc group, and toc_curr is used to track the old elf_gp. | |
10701 | We use toc_bfd to ensure we only look at each bfd once. */ | |
10702 | if (htab->toc_bfd == isec->owner) | |
10703 | return TRUE; | |
10704 | htab->toc_bfd = isec->owner; | |
10705 | ||
10706 | if (htab->toc_first_sec == NULL | |
10707 | || htab->toc_curr != elf_gp (isec->owner)) | |
10708 | { | |
10709 | htab->toc_curr = elf_gp (isec->owner); | |
10710 | htab->toc_first_sec = isec; | |
10711 | } | |
10712 | addr = (htab->toc_first_sec->output_offset | |
10713 | + htab->toc_first_sec->output_section->vma); | |
10714 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
10715 | elf_gp (isec->owner) = off; | |
10716 | ||
10717 | return TRUE; | |
ad8e1ba5 AM |
10718 | } |
10719 | ||
927be08e AM |
10720 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
10721 | symbol H. */ | |
10722 | ||
10723 | static bfd_boolean | |
10724 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10725 | { | |
10726 | if (h->root.type == bfd_link_hash_indirect) | |
10727 | return TRUE; | |
10728 | ||
927be08e AM |
10729 | merge_got_entries (&h->got.glist); |
10730 | ||
10731 | return TRUE; | |
10732 | } | |
10733 | ||
10734 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
10735 | symbol H. */ | |
10736 | ||
10737 | static bfd_boolean | |
10738 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
10739 | { | |
10740 | struct got_entry *gent; | |
10741 | ||
10742 | if (h->root.type == bfd_link_hash_indirect) | |
10743 | return TRUE; | |
10744 | ||
927be08e AM |
10745 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
10746 | if (!gent->is_indirect) | |
10747 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
10748 | return TRUE; | |
10749 | } | |
10750 | ||
10751 | /* Called on the first multitoc pass after the last call to | |
10752 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
10753 | entries. */ | |
10754 | ||
10755 | bfd_boolean | |
10756 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
10757 | { |
10758 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
10759 | struct bfd *ibfd, *ibfd2; |
10760 | bfd_boolean done_something; | |
10761 | ||
10762 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 10763 | |
7865406b AM |
10764 | if (!htab->do_multi_toc) |
10765 | return FALSE; | |
10766 | ||
d0fae19d | 10767 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
10768 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
10769 | ||
10770 | /* And tlsld_got. */ | |
10771 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10772 | { | |
10773 | struct got_entry *ent, *ent2; | |
10774 | ||
10775 | if (!is_ppc64_elf (ibfd)) | |
10776 | continue; | |
10777 | ||
10778 | ent = ppc64_tlsld_got (ibfd); | |
10779 | if (!ent->is_indirect | |
10780 | && ent->got.offset != (bfd_vma) -1) | |
10781 | { | |
10782 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
10783 | { | |
10784 | if (!is_ppc64_elf (ibfd2)) | |
10785 | continue; | |
10786 | ||
10787 | ent2 = ppc64_tlsld_got (ibfd2); | |
10788 | if (!ent2->is_indirect | |
10789 | && ent2->got.offset != (bfd_vma) -1 | |
10790 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
10791 | { | |
10792 | ent2->is_indirect = TRUE; | |
10793 | ent2->got.ent = ent; | |
10794 | } | |
10795 | } | |
10796 | } | |
10797 | } | |
10798 | ||
10799 | /* Zap sizes of got sections. */ | |
10800 | htab->reliplt->rawsize = htab->reliplt->size; | |
10801 | htab->reliplt->size -= htab->got_reli_size; | |
10802 | htab->got_reli_size = 0; | |
10803 | ||
10804 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10805 | { | |
10806 | asection *got, *relgot; | |
10807 | ||
10808 | if (!is_ppc64_elf (ibfd)) | |
10809 | continue; | |
10810 | ||
10811 | got = ppc64_elf_tdata (ibfd)->got; | |
10812 | if (got != NULL) | |
10813 | { | |
10814 | got->rawsize = got->size; | |
10815 | got->size = 0; | |
10816 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
10817 | relgot->rawsize = relgot->size; | |
10818 | relgot->size = 0; | |
10819 | } | |
10820 | } | |
10821 | ||
10822 | /* Now reallocate the got, local syms first. We don't need to | |
10823 | allocate section contents again since we never increase size. */ | |
10824 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10825 | { | |
10826 | struct got_entry **lgot_ents; | |
10827 | struct got_entry **end_lgot_ents; | |
10828 | struct plt_entry **local_plt; | |
10829 | struct plt_entry **end_local_plt; | |
f961d9dd | 10830 | unsigned char *lgot_masks; |
927be08e AM |
10831 | bfd_size_type locsymcount; |
10832 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 10833 | asection *s; |
927be08e AM |
10834 | |
10835 | if (!is_ppc64_elf (ibfd)) | |
10836 | continue; | |
10837 | ||
10838 | lgot_ents = elf_local_got_ents (ibfd); | |
10839 | if (!lgot_ents) | |
10840 | continue; | |
10841 | ||
10842 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10843 | locsymcount = symtab_hdr->sh_info; | |
10844 | end_lgot_ents = lgot_ents + locsymcount; | |
10845 | local_plt = (struct plt_entry **) end_lgot_ents; | |
10846 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10847 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 10848 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
10849 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
10850 | { | |
10851 | struct got_entry *ent; | |
10852 | ||
10853 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 10854 | { |
19e08130 AM |
10855 | unsigned int ent_size = 8; |
10856 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10857 | ||
d0fae19d AM |
10858 | ent->got.offset = s->size; |
10859 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 10860 | { |
19e08130 AM |
10861 | ent_size *= 2; |
10862 | rel_size *= 2; | |
10863 | } | |
10864 | s->size += ent_size; | |
10865 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
10866 | { | |
10867 | htab->reliplt->size += rel_size; | |
10868 | htab->got_reli_size += rel_size; | |
10869 | } | |
10870 | else if (info->shared) | |
10871 | { | |
10872 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10873 | srel->size += rel_size; | |
d0fae19d AM |
10874 | } |
10875 | } | |
927be08e AM |
10876 | } |
10877 | } | |
10878 | ||
10879 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
10880 | ||
10881 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10882 | { | |
10883 | struct got_entry *ent; | |
10884 | ||
10885 | if (!is_ppc64_elf (ibfd)) | |
10886 | continue; | |
10887 | ||
10888 | ent = ppc64_tlsld_got (ibfd); | |
10889 | if (!ent->is_indirect | |
10890 | && ent->got.offset != (bfd_vma) -1) | |
10891 | { | |
10892 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
10893 | ent->got.offset = s->size; | |
10894 | s->size += 16; | |
10895 | if (info->shared) | |
10896 | { | |
10897 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10898 | srel->size += sizeof (Elf64_External_Rela); | |
10899 | } | |
10900 | } | |
10901 | } | |
10902 | ||
10903 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
10904 | if (!done_something) | |
10905 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10906 | { | |
10907 | asection *got; | |
10908 | ||
10909 | if (!is_ppc64_elf (ibfd)) | |
10910 | continue; | |
10911 | ||
10912 | got = ppc64_elf_tdata (ibfd)->got; | |
10913 | if (got != NULL) | |
10914 | { | |
10915 | done_something = got->rawsize != got->size; | |
10916 | if (done_something) | |
10917 | break; | |
10918 | } | |
10919 | } | |
10920 | ||
10921 | if (done_something) | |
10922 | (*htab->layout_sections_again) (); | |
10923 | ||
10924 | /* Set up for second pass over toc sections to recalculate elf_gp | |
10925 | on input sections. */ | |
10926 | htab->toc_bfd = NULL; | |
10927 | htab->toc_first_sec = NULL; | |
10928 | htab->second_toc_pass = TRUE; | |
10929 | return done_something; | |
10930 | } | |
10931 | ||
10932 | /* Called after second pass of multitoc partitioning. */ | |
10933 | ||
10934 | void | |
10935 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
10936 | { | |
10937 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10938 | ||
10939 | /* After the second pass, toc_curr tracks the TOC offset used | |
10940 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 10941 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
10942 | } |
10943 | ||
9b5ecbd0 AM |
10944 | /* No toc references were found in ISEC. If the code in ISEC makes no |
10945 | calls, then there's no need to use toc adjusting stubs when branching | |
10946 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
10947 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
10948 | needed, and 2 if a cyclical call-graph was found but no other reason | |
10949 | for a stub was detected. If called from the top level, a return of | |
10950 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
10951 | |
10952 | static int | |
4ce794b7 | 10953 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 10954 | { |
9b5ecbd0 | 10955 | int ret; |
70cc837d AM |
10956 | |
10957 | /* Mark this section as checked. */ | |
10958 | isec->call_check_done = 1; | |
9b5ecbd0 | 10959 | |
772119ce AM |
10960 | /* We know none of our code bearing sections will need toc stubs. */ |
10961 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
10962 | return 0; | |
10963 | ||
eea6121a | 10964 | if (isec->size == 0) |
082c50f8 AM |
10965 | return 0; |
10966 | ||
4c52953f AM |
10967 | if (isec->output_section == NULL) |
10968 | return 0; | |
10969 | ||
4c52953f | 10970 | ret = 0; |
70cc837d | 10971 | if (isec->reloc_count != 0) |
9b5ecbd0 | 10972 | { |
70cc837d AM |
10973 | Elf_Internal_Rela *relstart, *rel; |
10974 | Elf_Internal_Sym *local_syms; | |
10975 | struct ppc_link_hash_table *htab; | |
2917689a | 10976 | |
70cc837d AM |
10977 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
10978 | info->keep_memory); | |
10979 | if (relstart == NULL) | |
10980 | return -1; | |
90aecf7a | 10981 | |
70cc837d AM |
10982 | /* Look for branches to outside of this section. */ |
10983 | local_syms = NULL; | |
10984 | htab = ppc_hash_table (info); | |
10985 | if (htab == NULL) | |
10986 | return -1; | |
4c52953f | 10987 | |
70cc837d | 10988 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 10989 | { |
70cc837d AM |
10990 | enum elf_ppc64_reloc_type r_type; |
10991 | unsigned long r_symndx; | |
10992 | struct elf_link_hash_entry *h; | |
10993 | struct ppc_link_hash_entry *eh; | |
10994 | Elf_Internal_Sym *sym; | |
10995 | asection *sym_sec; | |
10996 | struct _opd_sec_data *opd; | |
10997 | bfd_vma sym_value; | |
10998 | bfd_vma dest; | |
10999 | ||
11000 | r_type = ELF64_R_TYPE (rel->r_info); | |
11001 | if (r_type != R_PPC64_REL24 | |
11002 | && r_type != R_PPC64_REL14 | |
11003 | && r_type != R_PPC64_REL14_BRTAKEN | |
11004 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11005 | continue; | |
4c52953f | 11006 | |
70cc837d AM |
11007 | r_symndx = ELF64_R_SYM (rel->r_info); |
11008 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11009 | isec->owner)) | |
4c52953f | 11010 | { |
70cc837d AM |
11011 | ret = -1; |
11012 | break; | |
11013 | } | |
4c52953f | 11014 | |
70cc837d AM |
11015 | /* Calls to dynamic lib functions go through a plt call stub |
11016 | that uses r2. */ | |
11017 | eh = (struct ppc_link_hash_entry *) h; | |
11018 | if (eh != NULL | |
11019 | && (eh->elf.plt.plist != NULL | |
11020 | || (eh->oh != NULL | |
11021 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11022 | { | |
11023 | ret = 1; | |
11024 | break; | |
4c52953f AM |
11025 | } |
11026 | ||
70cc837d AM |
11027 | if (sym_sec == NULL) |
11028 | /* Ignore other undefined symbols. */ | |
4c52953f | 11029 | continue; |
4c52953f | 11030 | |
70cc837d AM |
11031 | /* Assume branches to other sections not included in the |
11032 | link need stubs too, to cover -R and absolute syms. */ | |
11033 | if (sym_sec->output_section == NULL) | |
11034 | { | |
11035 | ret = 1; | |
11036 | break; | |
11037 | } | |
4c52953f | 11038 | |
70cc837d AM |
11039 | if (h == NULL) |
11040 | sym_value = sym->st_value; | |
11041 | else | |
11042 | { | |
11043 | if (h->root.type != bfd_link_hash_defined | |
11044 | && h->root.type != bfd_link_hash_defweak) | |
11045 | abort (); | |
11046 | sym_value = h->root.u.def.value; | |
11047 | } | |
11048 | sym_value += rel->r_addend; | |
4c52953f | 11049 | |
70cc837d AM |
11050 | /* If this branch reloc uses an opd sym, find the code section. */ |
11051 | opd = get_opd_info (sym_sec); | |
11052 | if (opd != NULL) | |
11053 | { | |
11054 | if (h == NULL && opd->adjust != NULL) | |
11055 | { | |
11056 | long adjust; | |
4c52953f | 11057 | |
70cc837d AM |
11058 | adjust = opd->adjust[sym->st_value / 8]; |
11059 | if (adjust == -1) | |
11060 | /* Assume deleted functions won't ever be called. */ | |
11061 | continue; | |
11062 | sym_value += adjust; | |
11063 | } | |
4c52953f | 11064 | |
aef36ac1 AM |
11065 | dest = opd_entry_value (sym_sec, sym_value, |
11066 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11067 | if (dest == (bfd_vma) -1) |
11068 | continue; | |
11069 | } | |
11070 | else | |
11071 | dest = (sym_value | |
11072 | + sym_sec->output_offset | |
11073 | + sym_sec->output_section->vma); | |
4c52953f | 11074 | |
70cc837d AM |
11075 | /* Ignore branch to self. */ |
11076 | if (sym_sec == isec) | |
11077 | continue; | |
4c52953f | 11078 | |
70cc837d AM |
11079 | /* If the called function uses the toc, we need a stub. */ |
11080 | if (sym_sec->has_toc_reloc | |
11081 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11082 | { |
70cc837d | 11083 | ret = 1; |
4c52953f AM |
11084 | break; |
11085 | } | |
70cc837d AM |
11086 | |
11087 | /* Assume any branch that needs a long branch stub might in fact | |
11088 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11089 | else if (dest - (isec->output_offset | |
11090 | + isec->output_section->vma | |
11091 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
4c52953f | 11092 | { |
70cc837d AM |
11093 | ret = 1; |
11094 | break; | |
11095 | } | |
11096 | ||
11097 | /* If calling back to a section in the process of being | |
11098 | tested, we can't say for sure that no toc adjusting stubs | |
11099 | are needed, so don't return zero. */ | |
11100 | else if (sym_sec->call_check_in_progress) | |
11101 | ret = 2; | |
11102 | ||
11103 | /* Branches to another section that itself doesn't have any TOC | |
11104 | references are OK. Recursively call ourselves to check. */ | |
11105 | else if (!sym_sec->call_check_done) | |
11106 | { | |
11107 | int recur; | |
11108 | ||
11109 | /* Mark current section as indeterminate, so that other | |
11110 | sections that call back to current won't be marked as | |
11111 | known. */ | |
11112 | isec->call_check_in_progress = 1; | |
11113 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11114 | isec->call_check_in_progress = 0; | |
11115 | ||
4c52953f AM |
11116 | if (recur != 0) |
11117 | { | |
70cc837d AM |
11118 | ret = recur; |
11119 | if (recur != 2) | |
11120 | break; | |
4c52953f AM |
11121 | } |
11122 | } | |
4c52953f | 11123 | } |
70cc837d AM |
11124 | |
11125 | if (local_syms != NULL | |
11126 | && (elf_symtab_hdr (isec->owner).contents | |
11127 | != (unsigned char *) local_syms)) | |
11128 | free (local_syms); | |
11129 | if (elf_section_data (isec)->relocs != relstart) | |
11130 | free (relstart); | |
9b5ecbd0 AM |
11131 | } |
11132 | ||
70cc837d AM |
11133 | if ((ret & 1) == 0 |
11134 | && isec->map_head.s != NULL | |
11135 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11136 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11137 | { | |
11138 | if (isec->map_head.s->has_toc_reloc | |
11139 | || isec->map_head.s->makes_toc_func_call) | |
11140 | ret = 1; | |
11141 | else if (!isec->map_head.s->call_check_done) | |
11142 | { | |
11143 | int recur; | |
11144 | isec->call_check_in_progress = 1; | |
11145 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11146 | isec->call_check_in_progress = 0; | |
11147 | if (recur != 0) | |
11148 | ret = recur; | |
11149 | } | |
11150 | } | |
11151 | ||
11152 | if (ret == 1) | |
11153 | isec->makes_toc_func_call = 1; | |
4c52953f | 11154 | |
9b5ecbd0 AM |
11155 | return ret; |
11156 | } | |
11157 | ||
721956f4 AM |
11158 | /* The linker repeatedly calls this function for each input section, |
11159 | in the order that input sections are linked into output sections. | |
11160 | Build lists of input sections to determine groupings between which | |
11161 | we may insert linker stubs. */ | |
11162 | ||
9b5ecbd0 | 11163 | bfd_boolean |
4ce794b7 | 11164 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11165 | { |
11166 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11167 | ||
4dfe6ac6 NC |
11168 | if (htab == NULL) |
11169 | return FALSE; | |
11170 | ||
734b6cf9 AM |
11171 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11172 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11173 | { |
734b6cf9 | 11174 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11175 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11176 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11177 | /* This happens to make the list in reverse order, |
11178 | which is what we want. */ | |
734b6cf9 AM |
11179 | PREV_SEC (isec) = *list; |
11180 | *list = isec; | |
721956f4 | 11181 | } |
ad8e1ba5 | 11182 | |
4c52953f | 11183 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11184 | { |
4c52953f AM |
11185 | /* If a code section has a function that uses the TOC then we need |
11186 | to use the right TOC (obviously). Also, make sure that .opd gets | |
11187 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
11188 | can't find their function symbol (shouldn't ever happen now). |
11189 | Also specially treat .fixup for the linux kernel. .fixup | |
11190 | contains branches, but only back to the function that hit an | |
11191 | exception. */ | |
11192 | if (isec->has_toc_reloc | |
11193 | || (isec->flags & SEC_CODE) == 0 | |
11194 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
11195 | { |
11196 | if (elf_gp (isec->owner) != 0) | |
11197 | htab->toc_curr = elf_gp (isec->owner); | |
11198 | } | |
6683a28d AM |
11199 | else |
11200 | { | |
11201 | if (!isec->call_check_done | |
11202 | && toc_adjusting_stub_needed (info, isec) < 0) | |
11203 | return FALSE; | |
11204 | /* If we make a local call from this section, ie. a branch | |
11205 | without a following nop, then we have no place to put a | |
11206 | toc restoring insn. We must use the same toc group as | |
11207 | the callee. | |
11208 | Testing makes_toc_func_call actually tests for *any* | |
11209 | calls to functions that need a good toc pointer. A more | |
11210 | precise test would be better, as this one will set | |
11211 | incorrect values for pasted .init/.fini fragments. | |
11212 | (Fixed later in check_pasted_section.) */ | |
11213 | if (isec->makes_toc_func_call | |
11214 | && elf_gp (isec->owner) != 0) | |
11215 | htab->toc_curr = elf_gp (isec->owner); | |
11216 | } | |
9b5ecbd0 | 11217 | } |
ad8e1ba5 AM |
11218 | |
11219 | /* Functions that don't use the TOC can belong in any TOC group. | |
6683a28d | 11220 | Use the last TOC base. */ |
ad8e1ba5 | 11221 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11222 | return TRUE; |
721956f4 AM |
11223 | } |
11224 | ||
70cc837d AM |
11225 | /* Check that all .init and .fini sections use the same toc, if they |
11226 | have toc relocs. */ | |
11227 | ||
11228 | static bfd_boolean | |
11229 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11230 | { | |
11231 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11232 | ||
11233 | if (o != NULL) | |
11234 | { | |
11235 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11236 | bfd_vma toc_off = 0; | |
11237 | asection *i; | |
11238 | ||
11239 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11240 | if (i->has_toc_reloc) | |
11241 | { | |
11242 | if (toc_off == 0) | |
11243 | toc_off = htab->stub_group[i->id].toc_off; | |
11244 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11245 | return FALSE; | |
11246 | } | |
6683a28d AM |
11247 | |
11248 | if (toc_off == 0) | |
11249 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11250 | if (i->makes_toc_func_call) | |
11251 | { | |
11252 | toc_off = htab->stub_group[i->id].toc_off; | |
11253 | break; | |
11254 | } | |
11255 | ||
70cc837d AM |
11256 | /* Make sure the whole pasted function uses the same toc offset. */ |
11257 | if (toc_off != 0) | |
11258 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11259 | htab->stub_group[i->id].toc_off = toc_off; | |
11260 | } | |
11261 | return TRUE; | |
11262 | } | |
11263 | ||
11264 | bfd_boolean | |
11265 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11266 | { | |
11267 | return (check_pasted_section (info, ".init") | |
11268 | & check_pasted_section (info, ".fini")); | |
11269 | } | |
11270 | ||
721956f4 AM |
11271 | /* See whether we can group stub sections together. Grouping stub |
11272 | sections may result in fewer stubs. More importantly, we need to | |
11273 | put all .init* and .fini* stubs at the beginning of the .init or | |
11274 | .fini output sections respectively, because glibc splits the | |
11275 | _init and _fini functions into multiple parts. Putting a stub in | |
11276 | the middle of a function is not a good idea. */ | |
11277 | ||
11278 | static void | |
4ce794b7 AM |
11279 | group_sections (struct ppc_link_hash_table *htab, |
11280 | bfd_size_type stub_group_size, | |
11281 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11282 | { |
7c8fe5c4 AM |
11283 | asection **list; |
11284 | bfd_size_type stub14_group_size; | |
11285 | bfd_boolean suppress_size_errors; | |
11286 | ||
11287 | suppress_size_errors = FALSE; | |
11288 | stub14_group_size = stub_group_size; | |
11289 | if (stub_group_size == 1) | |
11290 | { | |
11291 | /* Default values. */ | |
11292 | if (stubs_always_before_branch) | |
11293 | { | |
11294 | stub_group_size = 0x1e00000; | |
11295 | stub14_group_size = 0x7800; | |
11296 | } | |
11297 | else | |
11298 | { | |
11299 | stub_group_size = 0x1c00000; | |
11300 | stub14_group_size = 0x7000; | |
11301 | } | |
11302 | suppress_size_errors = TRUE; | |
11303 | } | |
11304 | ||
11305 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11306 | do |
721956f4 | 11307 | { |
734b6cf9 AM |
11308 | asection *tail = *list; |
11309 | while (tail != NULL) | |
721956f4 | 11310 | { |
734b6cf9 AM |
11311 | asection *curr; |
11312 | asection *prev; | |
11313 | bfd_size_type total; | |
11314 | bfd_boolean big_sec; | |
11315 | bfd_vma curr_toc; | |
11316 | ||
11317 | curr = tail; | |
eea6121a | 11318 | total = tail->size; |
6bee8834 AM |
11319 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11320 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11321 | ? stub14_group_size : stub_group_size); |
11322 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11323 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11324 | tail->owner, tail); | |
734b6cf9 AM |
11325 | curr_toc = htab->stub_group[tail->id].toc_off; |
11326 | ||
11327 | while ((prev = PREV_SEC (curr)) != NULL | |
11328 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11329 | < (ppc64_elf_section_data (prev) != NULL |
11330 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11331 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11332 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11333 | curr = prev; |
11334 | ||
11335 | /* OK, the size from the start of CURR to the end is less | |
11336 | than stub_group_size and thus can be handled by one stub | |
11337 | section. (or the tail section is itself larger than | |
11338 | stub_group_size, in which case we may be toast.) We | |
11339 | should really be keeping track of the total size of stubs | |
11340 | added here, as stubs contribute to the final output | |
11341 | section size. That's a little tricky, and this way will | |
11342 | only break if stubs added make the total size more than | |
11343 | 2^25, ie. for the default stub_group_size, if stubs total | |
11344 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11345 | do | |
721956f4 AM |
11346 | { |
11347 | prev = PREV_SEC (tail); | |
734b6cf9 | 11348 | /* Set up this stub group. */ |
721956f4 AM |
11349 | htab->stub_group[tail->id].link_sec = curr; |
11350 | } | |
734b6cf9 AM |
11351 | while (tail != curr && (tail = prev) != NULL); |
11352 | ||
11353 | /* But wait, there's more! Input sections up to stub_group_size | |
11354 | bytes before the stub section can be handled by it too. | |
11355 | Don't do this if we have a really large section after the | |
11356 | stubs, as adding more stubs increases the chance that | |
11357 | branches may not reach into the stub section. */ | |
11358 | if (!stubs_always_before_branch && !big_sec) | |
11359 | { | |
11360 | total = 0; | |
11361 | while (prev != NULL | |
11362 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11363 | < (ppc64_elf_section_data (prev) != NULL |
11364 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11365 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11366 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11367 | { | |
11368 | tail = prev; | |
11369 | prev = PREV_SEC (tail); | |
11370 | htab->stub_group[tail->id].link_sec = curr; | |
11371 | } | |
11372 | } | |
11373 | tail = prev; | |
721956f4 AM |
11374 | } |
11375 | } | |
734b6cf9 AM |
11376 | while (list-- != htab->input_list); |
11377 | free (htab->input_list); | |
721956f4 AM |
11378 | #undef PREV_SEC |
11379 | } | |
11380 | ||
58d180e8 AM |
11381 | static const unsigned char glink_eh_frame_cie[] = |
11382 | { | |
11383 | 0, 0, 0, 16, /* length. */ | |
11384 | 0, 0, 0, 0, /* id. */ | |
11385 | 1, /* CIE version. */ | |
11386 | 'z', 'R', 0, /* Augmentation string. */ | |
11387 | 4, /* Code alignment. */ | |
11388 | 0x78, /* Data alignment. */ | |
11389 | 65, /* RA reg. */ | |
11390 | 1, /* Augmentation size. */ | |
11391 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11392 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11393 | }; | |
11394 | ||
d969d15f AM |
11395 | /* Stripping output sections is normally done before dynamic section |
11396 | symbols have been allocated. This function is called later, and | |
11397 | handles cases like htab->brlt which is mapped to its own output | |
11398 | section. */ | |
11399 | ||
11400 | static void | |
11401 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11402 | { | |
11403 | if (isec->size == 0 | |
11404 | && isec->output_section->size == 0 | |
53d8967a | 11405 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11406 | && !bfd_section_removed_from_list (info->output_bfd, |
11407 | isec->output_section) | |
11408 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11409 | { | |
11410 | isec->output_section->flags |= SEC_EXCLUDE; | |
11411 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11412 | info->output_bfd->section_count--; | |
11413 | } | |
11414 | } | |
11415 | ||
721956f4 AM |
11416 | /* Determine and set the size of the stub section for a final link. |
11417 | ||
11418 | The basic idea here is to examine all the relocations looking for | |
11419 | PC-relative calls to a target that is unreachable with a "bl" | |
11420 | instruction. */ | |
11421 | ||
b34976b6 | 11422 | bfd_boolean |
9df0ef5f | 11423 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
794e51c0 AM |
11424 | bfd_boolean plt_static_chain, int plt_thread_safe, |
11425 | int plt_stub_align) | |
721956f4 AM |
11426 | { |
11427 | bfd_size_type stub_group_size; | |
b34976b6 | 11428 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11429 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11430 | ||
4dfe6ac6 NC |
11431 | if (htab == NULL) |
11432 | return FALSE; | |
11433 | ||
9df0ef5f | 11434 | htab->plt_static_chain = plt_static_chain; |
794e51c0 | 11435 | htab->plt_stub_align = plt_stub_align; |
e2458743 AM |
11436 | if (plt_thread_safe == -1 && !info->executable) |
11437 | plt_thread_safe = 1; | |
794e51c0 AM |
11438 | if (plt_thread_safe == -1) |
11439 | { | |
e2458743 | 11440 | static const char *const thread_starter[] = |
794e51c0 AM |
11441 | { |
11442 | "pthread_create", | |
11443 | /* libstdc++ */ | |
11444 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11445 | /* librt */ | |
11446 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11447 | "mq_notify", "create_timer", | |
11448 | /* libanl */ | |
11449 | "getaddrinfo_a", | |
11450 | /* libgomp */ | |
11451 | "GOMP_parallel_start", | |
11452 | "GOMP_parallel_loop_static_start", | |
11453 | "GOMP_parallel_loop_dynamic_start", | |
11454 | "GOMP_parallel_loop_guided_start", | |
11455 | "GOMP_parallel_loop_runtime_start", | |
68ffbac6 | 11456 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11457 | }; |
11458 | unsigned i; | |
11459 | ||
11460 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11461 | { | |
11462 | struct elf_link_hash_entry *h; | |
11463 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11464 | FALSE, FALSE, TRUE); | |
11465 | plt_thread_safe = h != NULL && h->ref_regular; | |
11466 | if (plt_thread_safe) | |
11467 | break; | |
11468 | } | |
11469 | } | |
11470 | htab->plt_thread_safe = plt_thread_safe; | |
721956f4 AM |
11471 | stubs_always_before_branch = group_size < 0; |
11472 | if (group_size < 0) | |
11473 | stub_group_size = -group_size; | |
11474 | else | |
11475 | stub_group_size = group_size; | |
721956f4 AM |
11476 | |
11477 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11478 | ||
721956f4 AM |
11479 | while (1) |
11480 | { | |
11481 | bfd *input_bfd; | |
11482 | unsigned int bfd_indx; | |
11483 | asection *stub_sec; | |
721956f4 AM |
11484 | |
11485 | htab->stub_iteration += 1; | |
721956f4 AM |
11486 | |
11487 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11488 | input_bfd != NULL; | |
11489 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11490 | { | |
11491 | Elf_Internal_Shdr *symtab_hdr; | |
11492 | asection *section; | |
6cdc0ccc | 11493 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11494 | |
0c8d6e5c | 11495 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11496 | continue; |
11497 | ||
721956f4 | 11498 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11499 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11500 | if (symtab_hdr->sh_info == 0) |
11501 | continue; | |
11502 | ||
721956f4 AM |
11503 | /* Walk over each section attached to the input bfd. */ |
11504 | for (section = input_bfd->sections; | |
11505 | section != NULL; | |
11506 | section = section->next) | |
11507 | { | |
721956f4 | 11508 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11509 | |
11510 | /* If there aren't any relocs, then there's nothing more | |
11511 | to do. */ | |
11512 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11513 | || (section->flags & SEC_ALLOC) == 0 |
11514 | || (section->flags & SEC_LOAD) == 0 | |
11515 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11516 | || section->reloc_count == 0) |
11517 | continue; | |
11518 | ||
11519 | /* If this section is a link-once section that will be | |
11520 | discarded, then don't create any stubs. */ | |
11521 | if (section->output_section == NULL | |
927be08e | 11522 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11523 | continue; |
11524 | ||
1e2f5b6e AM |
11525 | /* Get the relocs. */ |
11526 | internal_relocs | |
4ce794b7 | 11527 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11528 | info->keep_memory); |
721956f4 | 11529 | if (internal_relocs == NULL) |
1e2f5b6e | 11530 | goto error_ret_free_local; |
721956f4 AM |
11531 | |
11532 | /* Now examine each relocation. */ | |
11533 | irela = internal_relocs; | |
11534 | irelaend = irela + section->reloc_count; | |
11535 | for (; irela < irelaend; irela++) | |
11536 | { | |
4ce794b7 AM |
11537 | enum elf_ppc64_reloc_type r_type; |
11538 | unsigned int r_indx; | |
721956f4 AM |
11539 | enum ppc_stub_type stub_type; |
11540 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11541 | asection *sym_sec, *code_sec; |
e054468f | 11542 | bfd_vma sym_value, code_value; |
721956f4 | 11543 | bfd_vma destination; |
8843416a | 11544 | bfd_boolean ok_dest; |
721956f4 | 11545 | struct ppc_link_hash_entry *hash; |
8387904d | 11546 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11547 | struct elf_link_hash_entry *h; |
11548 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11549 | char *stub_name; |
11550 | const asection *id_sec; | |
74f0fb50 | 11551 | struct _opd_sec_data *opd; |
e054468f | 11552 | struct plt_entry *plt_ent; |
721956f4 AM |
11553 | |
11554 | r_type = ELF64_R_TYPE (irela->r_info); | |
11555 | r_indx = ELF64_R_SYM (irela->r_info); | |
11556 | ||
4ce794b7 | 11557 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11558 | { |
11559 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11560 | goto error_ret_free_internal; |
721956f4 AM |
11561 | } |
11562 | ||
11563 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
11564 | if (r_type != R_PPC64_REL24 |
11565 | && r_type != R_PPC64_REL14 | |
11566 | && r_type != R_PPC64_REL14_BRTAKEN | |
11567 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11568 | continue; |
11569 | ||
11570 | /* Now determine the call target, its name, value, | |
11571 | section. */ | |
411e1bfb AM |
11572 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11573 | r_indx, input_bfd)) | |
11574 | goto error_ret_free_internal; | |
11575 | hash = (struct ppc_link_hash_entry *) h; | |
11576 | ||
8843416a | 11577 | ok_dest = FALSE; |
8387904d | 11578 | fdh = NULL; |
7fe2b9a6 | 11579 | sym_value = 0; |
411e1bfb | 11580 | if (hash == NULL) |
721956f4 | 11581 | { |
411e1bfb | 11582 | sym_value = sym->st_value; |
8843416a | 11583 | ok_dest = TRUE; |
721956f4 | 11584 | } |
7fe2b9a6 AM |
11585 | else if (hash->elf.root.type == bfd_link_hash_defined |
11586 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11587 | { | |
11588 | sym_value = hash->elf.root.u.def.value; | |
11589 | if (sym_sec->output_section != NULL) | |
11590 | ok_dest = TRUE; | |
11591 | } | |
11592 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
11593 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 11594 | { |
99877b66 | 11595 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
11596 | use the func descriptor sym instead if it is |
11597 | defined. */ | |
ceb1f1ef | 11598 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 11599 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 11600 | { |
8387904d AM |
11601 | if (fdh->elf.root.type == bfd_link_hash_defined |
11602 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
11603 | { | |
11604 | sym_sec = fdh->elf.root.u.def.section; | |
11605 | sym_value = fdh->elf.root.u.def.value; | |
11606 | if (sym_sec->output_section != NULL) | |
11607 | ok_dest = TRUE; | |
11608 | } | |
99877b66 AM |
11609 | else |
11610 | fdh = NULL; | |
8387904d | 11611 | } |
7fe2b9a6 AM |
11612 | } |
11613 | else | |
11614 | { | |
11615 | bfd_set_error (bfd_error_bad_value); | |
11616 | goto error_ret_free_internal; | |
721956f4 AM |
11617 | } |
11618 | ||
8843416a AM |
11619 | destination = 0; |
11620 | if (ok_dest) | |
11621 | { | |
11622 | sym_value += irela->r_addend; | |
11623 | destination = (sym_value | |
11624 | + sym_sec->output_offset | |
11625 | + sym_sec->output_section->vma); | |
11626 | } | |
11627 | ||
8387904d | 11628 | code_sec = sym_sec; |
e054468f | 11629 | code_value = sym_value; |
74f0fb50 AM |
11630 | opd = get_opd_info (sym_sec); |
11631 | if (opd != NULL) | |
8387904d AM |
11632 | { |
11633 | bfd_vma dest; | |
11634 | ||
74f0fb50 | 11635 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 11636 | { |
74f0fb50 | 11637 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
11638 | if (adjust == -1) |
11639 | continue; | |
e054468f | 11640 | code_value += adjust; |
8387904d AM |
11641 | sym_value += adjust; |
11642 | } | |
11643 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 11644 | &code_sec, &code_value, FALSE); |
8387904d AM |
11645 | if (dest != (bfd_vma) -1) |
11646 | { | |
11647 | destination = dest; | |
11648 | if (fdh != NULL) | |
11649 | { | |
11650 | /* Fixup old ABI sym to point at code | |
11651 | entry. */ | |
99877b66 | 11652 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 11653 | hash->elf.root.u.def.section = code_sec; |
e054468f | 11654 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
11655 | } |
11656 | } | |
11657 | } | |
11658 | ||
721956f4 | 11659 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 11660 | plt_ent = NULL; |
721956f4 | 11661 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 11662 | &plt_ent, destination); |
ad8e1ba5 AM |
11663 | |
11664 | if (stub_type != ppc_stub_plt_call) | |
11665 | { | |
11666 | /* Check whether we need a TOC adjusting stub. | |
11667 | Since the linker pastes together pieces from | |
11668 | different object files when creating the | |
11669 | _init and _fini functions, it may be that a | |
11670 | call to what looks like a local sym is in | |
11671 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
11672 | if (code_sec != NULL |
11673 | && code_sec->output_section != NULL | |
11674 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 11675 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
11676 | && (code_sec->has_toc_reloc |
11677 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
11678 | stub_type = ppc_stub_long_branch_r2off; |
11679 | } | |
11680 | ||
721956f4 AM |
11681 | if (stub_type == ppc_stub_none) |
11682 | continue; | |
11683 | ||
411e1bfb AM |
11684 | /* __tls_get_addr calls might be eliminated. */ |
11685 | if (stub_type != ppc_stub_plt_call | |
11686 | && hash != NULL | |
8387904d AM |
11687 | && (hash == htab->tls_get_addr |
11688 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
11689 | && section->has_tls_reloc |
11690 | && irela != internal_relocs) | |
11691 | { | |
11692 | /* Get tls info. */ | |
f961d9dd | 11693 | unsigned char *tls_mask; |
411e1bfb | 11694 | |
3a71aa26 | 11695 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
11696 | irela - 1, input_bfd)) |
11697 | goto error_ret_free_internal; | |
e7b938ca | 11698 | if (*tls_mask != 0) |
411e1bfb AM |
11699 | continue; |
11700 | } | |
11701 | ||
3b421ab3 AM |
11702 | if (stub_type == ppc_stub_plt_call |
11703 | && irela + 1 < irelaend | |
11704 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
11705 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
11706 | { | |
11707 | if (!tocsave_find (htab, INSERT, | |
11708 | &local_syms, irela + 1, input_bfd)) | |
11709 | goto error_ret_free_internal; | |
11710 | } | |
11711 | else if (stub_type == ppc_stub_plt_call) | |
11712 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 11713 | |
721956f4 AM |
11714 | /* Support for grouping stub sections. */ |
11715 | id_sec = htab->stub_group[section->id].link_sec; | |
11716 | ||
11717 | /* Get the name of this stub. */ | |
11718 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
11719 | if (!stub_name) | |
11720 | goto error_ret_free_internal; | |
11721 | ||
11722 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 11723 | stub_name, FALSE, FALSE); |
721956f4 AM |
11724 | if (stub_entry != NULL) |
11725 | { | |
11726 | /* The proper stub has already been created. */ | |
11727 | free (stub_name); | |
794e51c0 AM |
11728 | if (stub_type == ppc_stub_plt_call_r2save) |
11729 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
11730 | continue; |
11731 | } | |
11732 | ||
25f53a85 | 11733 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
11734 | if (stub_entry == NULL) |
11735 | { | |
11736 | free (stub_name); | |
6cdc0ccc AM |
11737 | error_ret_free_internal: |
11738 | if (elf_section_data (section)->relocs == NULL) | |
11739 | free (internal_relocs); | |
11740 | error_ret_free_local: | |
11741 | if (local_syms != NULL | |
11742 | && (symtab_hdr->contents | |
11743 | != (unsigned char *) local_syms)) | |
11744 | free (local_syms); | |
b34976b6 | 11745 | return FALSE; |
721956f4 AM |
11746 | } |
11747 | ||
ad8e1ba5 | 11748 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
11749 | if (stub_type != ppc_stub_plt_call |
11750 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
11751 | { |
11752 | stub_entry->target_value = code_value; | |
11753 | stub_entry->target_section = code_sec; | |
11754 | } | |
11755 | else | |
11756 | { | |
11757 | stub_entry->target_value = sym_value; | |
11758 | stub_entry->target_section = sym_sec; | |
11759 | } | |
721956f4 | 11760 | stub_entry->h = hash; |
e054468f | 11761 | stub_entry->plt_ent = plt_ent; |
ee75fd95 AM |
11762 | |
11763 | if (stub_entry->h != NULL) | |
11764 | htab->stub_globals += 1; | |
721956f4 AM |
11765 | } |
11766 | ||
11767 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 11768 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 11769 | free (internal_relocs); |
721956f4 | 11770 | } |
6cdc0ccc AM |
11771 | |
11772 | if (local_syms != NULL | |
11773 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
11774 | { | |
11775 | if (!info->keep_memory) | |
11776 | free (local_syms); | |
11777 | else | |
11778 | symtab_hdr->contents = (unsigned char *) local_syms; | |
11779 | } | |
721956f4 AM |
11780 | } |
11781 | ||
5c3dead3 | 11782 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
11783 | stub sections. */ |
11784 | for (stub_sec = htab->stub_bfd->sections; | |
11785 | stub_sec != NULL; | |
11786 | stub_sec = stub_sec->next) | |
e717da7e | 11787 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 11788 | { |
5c3dead3 | 11789 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
11790 | stub_sec->size = 0; |
11791 | stub_sec->reloc_count = 0; | |
84f5d08e | 11792 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 11793 | } |
eea6121a AM |
11794 | |
11795 | htab->brlt->size = 0; | |
84f5d08e AM |
11796 | htab->brlt->reloc_count = 0; |
11797 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 11798 | if (htab->relbrlt != NULL) |
eea6121a | 11799 | htab->relbrlt->size = 0; |
721956f4 | 11800 | |
63bc6f6c | 11801 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 11802 | |
176a0d42 AM |
11803 | if (info->emitrelocations |
11804 | && htab->glink != NULL && htab->glink->size != 0) | |
11805 | { | |
11806 | htab->glink->reloc_count = 1; | |
11807 | htab->glink->flags |= SEC_RELOC; | |
11808 | } | |
11809 | ||
58d180e8 AM |
11810 | if (htab->glink_eh_frame != NULL |
11811 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 11812 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 11813 | { |
4bbe044a | 11814 | size_t size = 0, align; |
58d180e8 AM |
11815 | |
11816 | for (stub_sec = htab->stub_bfd->sections; | |
11817 | stub_sec != NULL; | |
11818 | stub_sec = stub_sec->next) | |
11819 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11820 | size += 20; | |
11821 | if (htab->glink != NULL && htab->glink->size != 0) | |
11822 | size += 24; | |
11823 | if (size != 0) | |
11824 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
11825 | align = 1; |
11826 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
11827 | align -= 1; | |
11828 | size = (size + align) & ~align; | |
58d180e8 AM |
11829 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
11830 | htab->glink_eh_frame->size = size; | |
11831 | } | |
11832 | ||
794e51c0 AM |
11833 | if (htab->plt_stub_align != 0) |
11834 | for (stub_sec = htab->stub_bfd->sections; | |
11835 | stub_sec != NULL; | |
11836 | stub_sec = stub_sec->next) | |
11837 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11838 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
11839 | & (-1 << htab->plt_stub_align)); | |
11840 | ||
5c3dead3 AM |
11841 | for (stub_sec = htab->stub_bfd->sections; |
11842 | stub_sec != NULL; | |
11843 | stub_sec = stub_sec->next) | |
11844 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
11845 | && stub_sec->rawsize != stub_sec->size) | |
11846 | break; | |
11847 | ||
11848 | /* Exit from this loop when no stubs have been added, and no stubs | |
11849 | have changed size. */ | |
58d180e8 AM |
11850 | if (stub_sec == NULL |
11851 | && (htab->glink_eh_frame == NULL | |
11852 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
11853 | break; |
11854 | ||
721956f4 AM |
11855 | /* Ask the linker to do its stuff. */ |
11856 | (*htab->layout_sections_again) (); | |
11857 | } | |
11858 | ||
d969d15f AM |
11859 | maybe_strip_output (info, htab->brlt); |
11860 | if (htab->glink_eh_frame != NULL) | |
11861 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 11862 | |
b34976b6 | 11863 | return TRUE; |
721956f4 AM |
11864 | } |
11865 | ||
11866 | /* Called after we have determined section placement. If sections | |
805fc799 | 11867 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 11868 | |
805fc799 | 11869 | bfd_vma |
1c865ab2 | 11870 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 11871 | { |
805fc799 AM |
11872 | asection *s; |
11873 | bfd_vma TOCstart; | |
721956f4 | 11874 | |
805fc799 AM |
11875 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
11876 | order. The TOC starts where the first of these sections starts. */ | |
11877 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 11878 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11879 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 11880 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11881 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 11882 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11883 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 11884 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
11885 | { |
11886 | /* This may happen for | |
11887 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
11888 | .toc directive | |
11889 | o bad linker script | |
11890 | o --gc-sections and empty TOC sections | |
11891 | ||
11892 | FIXME: Warn user? */ | |
11893 | ||
11894 | /* Look for a likely section. We probably won't even be | |
11895 | using TOCstart. */ | |
11896 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
11897 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
11898 | | SEC_EXCLUDE)) | |
805fc799 AM |
11899 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
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_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
11904 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11905 | break; | |
721956f4 | 11906 | if (s == NULL) |
805fc799 | 11907 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
11908 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
11909 | == SEC_ALLOC) | |
805fc799 | 11910 | break; |
721956f4 | 11911 | if (s == NULL) |
805fc799 | 11912 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11913 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
11914 | break; |
11915 | } | |
721956f4 | 11916 | |
805fc799 AM |
11917 | TOCstart = 0; |
11918 | if (s != NULL) | |
11919 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 11920 | |
1c865ab2 AM |
11921 | _bfd_set_gp_value (obfd, TOCstart); |
11922 | ||
11923 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
11924 | { | |
11925 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11926 | ||
11927 | if (htab != NULL | |
11928 | && htab->elf.hgot != NULL) | |
11929 | { | |
5295321c | 11930 | htab->elf.hgot->type = STT_OBJECT; |
1c865ab2 AM |
11931 | htab->elf.hgot->root.type = bfd_link_hash_defined; |
11932 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
11933 | htab->elf.hgot->root.u.def.section = s; | |
11934 | } | |
11935 | } | |
805fc799 | 11936 | return TOCstart; |
721956f4 AM |
11937 | } |
11938 | ||
11939 | /* Build all the stubs associated with the current output file. | |
11940 | The stubs are kept in a hash table attached to the main linker | |
11941 | hash table. This function is called via gldelf64ppc_finish. */ | |
11942 | ||
b34976b6 | 11943 | bfd_boolean |
4ce794b7 AM |
11944 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
11945 | struct bfd_link_info *info, | |
11946 | char **stats) | |
5d1634d7 AM |
11947 | { |
11948 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 11949 | asection *stub_sec; |
5d1634d7 | 11950 | bfd_byte *p; |
e717da7e | 11951 | int stub_sec_count = 0; |
5d1634d7 | 11952 | |
4dfe6ac6 NC |
11953 | if (htab == NULL) |
11954 | return FALSE; | |
11955 | ||
ad8e1ba5 | 11956 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
11957 | |
11958 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
11959 | for (stub_sec = htab->stub_bfd->sections; |
11960 | stub_sec != NULL; | |
11961 | stub_sec = stub_sec->next) | |
eea6121a AM |
11962 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
11963 | && stub_sec->size != 0) | |
e717da7e | 11964 | { |
eea6121a AM |
11965 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
11966 | if (stub_sec->contents == NULL) | |
11967 | return FALSE; | |
11968 | /* We want to check that built size is the same as calculated | |
11969 | size. rawsize is a convenient location to use. */ | |
11970 | stub_sec->rawsize = stub_sec->size; | |
11971 | stub_sec->size = 0; | |
e717da7e | 11972 | } |
5d1634d7 | 11973 | |
23eb7e01 | 11974 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 11975 | { |
9f951329 | 11976 | unsigned int indx; |
ad8e1ba5 | 11977 | bfd_vma plt0; |
9f951329 | 11978 | |
721956f4 | 11979 | /* Build the .glink plt call stub. */ |
97b639ba AM |
11980 | if (htab->emit_stub_syms) |
11981 | { | |
11982 | struct elf_link_hash_entry *h; | |
468392fb AM |
11983 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
11984 | TRUE, FALSE, FALSE); | |
97b639ba AM |
11985 | if (h == NULL) |
11986 | return FALSE; | |
11987 | if (h->root.type == bfd_link_hash_new) | |
11988 | { | |
11989 | h->root.type = bfd_link_hash_defined; | |
11990 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 11991 | h->root.u.def.value = 8; |
f5385ebf AM |
11992 | h->ref_regular = 1; |
11993 | h->def_regular = 1; | |
11994 | h->ref_regular_nonweak = 1; | |
11995 | h->forced_local = 1; | |
11996 | h->non_elf = 0; | |
97b639ba AM |
11997 | } |
11998 | } | |
176a0d42 AM |
11999 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
12000 | if (info->emitrelocations) | |
12001 | { | |
12002 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12003 | if (r == NULL) | |
12004 | return FALSE; | |
12005 | r->r_offset = (htab->glink->output_offset | |
12006 | + htab->glink->output_section->vma); | |
12007 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12008 | r->r_addend = plt0; | |
12009 | } | |
4ce794b7 | 12010 | p = htab->glink->contents; |
176a0d42 | 12011 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12012 | bfd_put_64 (htab->glink->owner, plt0, p); |
12013 | p += 8; | |
12014 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 12015 | p += 4; |
ee4bf8d2 | 12016 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 12017 | p += 4; |
ee4bf8d2 | 12018 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 12019 | p += 4; |
ee4bf8d2 | 12020 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 12021 | p += 4; |
ee4bf8d2 | 12022 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 12023 | p += 4; |
ee4bf8d2 | 12024 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 12025 | p += 4; |
ee4bf8d2 | 12026 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 12027 | p += 4; |
4ce794b7 | 12028 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 12029 | p += 4; |
4ce794b7 | 12030 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 12031 | p += 4; |
4ce794b7 | 12032 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 12033 | p += 4; |
4ce794b7 | 12034 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12035 | p += 4; |
ee4bf8d2 AM |
12036 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12037 | { | |
12038 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12039 | p += 4; | |
12040 | } | |
ad8e1ba5 | 12041 | |
9f951329 AM |
12042 | /* Build the .glink lazy link call stubs. */ |
12043 | indx = 0; | |
eea6121a | 12044 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
12045 | { |
12046 | if (indx < 0x8000) | |
12047 | { | |
4ce794b7 | 12048 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
12049 | p += 4; |
12050 | } | |
12051 | else | |
12052 | { | |
4ce794b7 | 12053 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 12054 | p += 4; |
4ce794b7 | 12055 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
12056 | p += 4; |
12057 | } | |
4ce794b7 | 12058 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12059 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12060 | indx++; |
9f951329 AM |
12061 | p += 4; |
12062 | } | |
eea6121a | 12063 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 12064 | } |
5d1634d7 | 12065 | |
eea6121a | 12066 | if (htab->brlt->size != 0) |
721956f4 | 12067 | { |
4ce794b7 | 12068 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12069 | htab->brlt->size); |
4ce794b7 | 12070 | if (htab->brlt->contents == NULL) |
b34976b6 | 12071 | return FALSE; |
721956f4 | 12072 | } |
ee75fd95 | 12073 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12074 | { |
12075 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12076 | htab->relbrlt->size); |
63bc6f6c AM |
12077 | if (htab->relbrlt->contents == NULL) |
12078 | return FALSE; | |
12079 | } | |
5d1634d7 | 12080 | |
58d180e8 AM |
12081 | if (htab->glink_eh_frame != NULL |
12082 | && htab->glink_eh_frame->size != 0) | |
12083 | { | |
12084 | bfd_vma val; | |
4bbe044a AM |
12085 | bfd_byte *last_fde; |
12086 | size_t last_fde_len, size, align, pad; | |
58d180e8 AM |
12087 | |
12088 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12089 | if (p == NULL) | |
12090 | return FALSE; | |
12091 | htab->glink_eh_frame->contents = p; | |
4bbe044a | 12092 | last_fde = p; |
58d180e8 AM |
12093 | |
12094 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
12095 | ||
12096 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12097 | /* CIE length (rewrite in case little-endian). */ | |
4bbe044a AM |
12098 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
12099 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
58d180e8 AM |
12100 | p += sizeof (glink_eh_frame_cie); |
12101 | ||
12102 | for (stub_sec = htab->stub_bfd->sections; | |
12103 | stub_sec != NULL; | |
12104 | stub_sec = stub_sec->next) | |
12105 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12106 | { | |
4bbe044a AM |
12107 | last_fde = p; |
12108 | last_fde_len = 16; | |
58d180e8 AM |
12109 | /* FDE length. */ |
12110 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
12111 | p += 4; | |
12112 | /* CIE pointer. */ | |
12113 | val = p - htab->glink_eh_frame->contents; | |
12114 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12115 | p += 4; | |
12116 | /* Offset to stub section. */ | |
12117 | val = (stub_sec->output_section->vma | |
12118 | + stub_sec->output_offset); | |
12119 | val -= (htab->glink_eh_frame->output_section->vma | |
12120 | + htab->glink_eh_frame->output_offset); | |
12121 | val -= p - htab->glink_eh_frame->contents; | |
12122 | if (val + 0x80000000 > 0xffffffff) | |
12123 | { | |
12124 | info->callbacks->einfo | |
8de848d8 | 12125 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12126 | stub_sec->name); |
12127 | return FALSE; | |
12128 | } | |
12129 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12130 | p += 4; | |
12131 | /* stub section size. */ | |
12132 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
12133 | p += 4; | |
12134 | /* Augmentation. */ | |
12135 | p += 1; | |
12136 | /* Pad. */ | |
12137 | p += 3; | |
12138 | } | |
12139 | if (htab->glink != NULL && htab->glink->size != 0) | |
12140 | { | |
4bbe044a AM |
12141 | last_fde = p; |
12142 | last_fde_len = 20; | |
58d180e8 AM |
12143 | /* FDE length. */ |
12144 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12145 | p += 4; | |
12146 | /* CIE pointer. */ | |
12147 | val = p - htab->glink_eh_frame->contents; | |
12148 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12149 | p += 4; | |
12150 | /* Offset to .glink. */ | |
12151 | val = (htab->glink->output_section->vma | |
12152 | + htab->glink->output_offset | |
12153 | + 8); | |
12154 | val -= (htab->glink_eh_frame->output_section->vma | |
12155 | + htab->glink_eh_frame->output_offset); | |
12156 | val -= p - htab->glink_eh_frame->contents; | |
12157 | if (val + 0x80000000 > 0xffffffff) | |
12158 | { | |
12159 | info->callbacks->einfo | |
8de848d8 | 12160 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12161 | htab->glink->name); |
12162 | return FALSE; | |
12163 | } | |
12164 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12165 | p += 4; | |
12166 | /* .glink size. */ | |
12167 | bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p); | |
12168 | p += 4; | |
12169 | /* Augmentation. */ | |
12170 | p += 1; | |
12171 | ||
12172 | *p++ = DW_CFA_advance_loc + 1; | |
12173 | *p++ = DW_CFA_register; | |
12174 | *p++ = 65; | |
12175 | *p++ = 12; | |
12176 | *p++ = DW_CFA_advance_loc + 4; | |
12177 | *p++ = DW_CFA_restore_extended; | |
12178 | *p++ = 65; | |
12179 | } | |
4bbe044a AM |
12180 | /* Subsume any padding into the last FDE if user .eh_frame |
12181 | sections are aligned more than glink_eh_frame. Otherwise any | |
12182 | zero padding will be seen as a terminator. */ | |
12183 | size = p - htab->glink_eh_frame->contents; | |
12184 | align = 1; | |
12185 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12186 | align -= 1; | |
12187 | pad = ((size + align) & ~align) - size; | |
12188 | htab->glink_eh_frame->size = size + pad; | |
12189 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
58d180e8 AM |
12190 | } |
12191 | ||
721956f4 AM |
12192 | /* Build the stubs as directed by the stub hash table. */ |
12193 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12194 | |
aa8a7074 AM |
12195 | if (htab->relbrlt != NULL) |
12196 | htab->relbrlt->reloc_count = 0; | |
12197 | ||
794e51c0 AM |
12198 | if (htab->plt_stub_align != 0) |
12199 | for (stub_sec = htab->stub_bfd->sections; | |
12200 | stub_sec != NULL; | |
12201 | stub_sec = stub_sec->next) | |
12202 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12203 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
12204 | & (-1 << htab->plt_stub_align)); | |
12205 | ||
721956f4 AM |
12206 | for (stub_sec = htab->stub_bfd->sections; |
12207 | stub_sec != NULL; | |
12208 | stub_sec = stub_sec->next) | |
e717da7e AM |
12209 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12210 | { | |
12211 | stub_sec_count += 1; | |
eea6121a | 12212 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12213 | break; |
12214 | } | |
5d1634d7 | 12215 | |
721956f4 | 12216 | if (stub_sec != NULL |
58d180e8 AM |
12217 | || htab->glink->rawsize != htab->glink->size |
12218 | || (htab->glink_eh_frame != NULL | |
12219 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12220 | { |
b34976b6 | 12221 | htab->stub_error = TRUE; |
8de848d8 | 12222 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12223 | } |
721956f4 | 12224 | |
d2a300cf AM |
12225 | if (htab->stub_error) |
12226 | return FALSE; | |
12227 | ||
12228 | if (stats != NULL) | |
12229 | { | |
12230 | *stats = bfd_malloc (500); | |
12231 | if (*stats == NULL) | |
12232 | return FALSE; | |
12233 | ||
ee75fd95 | 12234 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12235 | " branch %lu\n" |
12236 | " toc adjust %lu\n" | |
12237 | " long branch %lu\n" | |
12238 | " long toc adj %lu\n" | |
794e51c0 AM |
12239 | " plt call %lu\n" |
12240 | " plt call toc %lu"), | |
e717da7e | 12241 | stub_sec_count, |
ee75fd95 | 12242 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12243 | htab->stub_count[ppc_stub_long_branch - 1], |
12244 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12245 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12246 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 AM |
12247 | htab->stub_count[ppc_stub_plt_call - 1], |
12248 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
d2a300cf AM |
12249 | } |
12250 | return TRUE; | |
5bd4f169 AM |
12251 | } |
12252 | ||
99877b66 AM |
12253 | /* This function undoes the changes made by add_symbol_adjust. */ |
12254 | ||
12255 | static bfd_boolean | |
12256 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12257 | { | |
12258 | struct ppc_link_hash_entry *eh; | |
12259 | ||
12260 | if (h->root.type == bfd_link_hash_indirect) | |
12261 | return TRUE; | |
12262 | ||
99877b66 AM |
12263 | eh = (struct ppc_link_hash_entry *) h; |
12264 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12265 | return TRUE; | |
12266 | ||
12267 | eh->elf.root.type = bfd_link_hash_undefined; | |
12268 | return TRUE; | |
12269 | } | |
12270 | ||
12271 | void | |
12272 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12273 | { | |
12274 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12275 | |
12276 | if (htab != NULL) | |
12277 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12278 | } |
12279 | ||
60124e18 AM |
12280 | /* What to do when ld finds relocations against symbols defined in |
12281 | discarded sections. */ | |
12282 | ||
12283 | static unsigned int | |
12284 | ppc64_elf_action_discarded (asection *sec) | |
12285 | { | |
12286 | if (strcmp (".opd", sec->name) == 0) | |
12287 | return 0; | |
12288 | ||
12289 | if (strcmp (".toc", sec->name) == 0) | |
12290 | return 0; | |
12291 | ||
bce50a28 JJ |
12292 | if (strcmp (".toc1", sec->name) == 0) |
12293 | return 0; | |
12294 | ||
60124e18 AM |
12295 | return _bfd_elf_default_action_discarded (sec); |
12296 | } | |
12297 | ||
5bd4f169 AM |
12298 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12299 | to handle the relocations for a section. | |
12300 | ||
12301 | The relocs are always passed as Rela structures; if the section | |
12302 | actually uses Rel structures, the r_addend field will always be | |
12303 | zero. | |
12304 | ||
12305 | This function is responsible for adjust the section contents as | |
12306 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12307 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12308 | necessary. |
12309 | ||
12310 | This function does not have to worry about setting the reloc | |
12311 | address or the reloc symbol index. | |
12312 | ||
12313 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12314 | ||
12315 | LOCAL_SECTIONS is an array giving the section in the input file | |
12316 | corresponding to the st_shndx field of each local symbol. | |
12317 | ||
12318 | The global hash table entry for the global symbols can be found | |
12319 | via elf_sym_hashes (input_bfd). | |
12320 | ||
1049f94e | 12321 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12322 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12323 | going to be the section symbol corresponding to the output | |
12324 | section, which means that the addend must be adjusted | |
12325 | accordingly. */ | |
12326 | ||
b34976b6 | 12327 | static bfd_boolean |
4ce794b7 AM |
12328 | ppc64_elf_relocate_section (bfd *output_bfd, |
12329 | struct bfd_link_info *info, | |
12330 | bfd *input_bfd, | |
12331 | asection *input_section, | |
12332 | bfd_byte *contents, | |
12333 | Elf_Internal_Rela *relocs, | |
12334 | Elf_Internal_Sym *local_syms, | |
12335 | asection **local_sections) | |
5bd4f169 | 12336 | { |
65f38f15 | 12337 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12338 | Elf_Internal_Shdr *symtab_hdr; |
12339 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12340 | Elf_Internal_Rela *rel; |
12341 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12342 | Elf_Internal_Rela outrel; |
12343 | bfd_byte *loc; | |
411e1bfb | 12344 | struct got_entry **local_got_ents; |
5bd4f169 | 12345 | bfd_vma TOCstart; |
b34976b6 AM |
12346 | bfd_boolean ret = TRUE; |
12347 | bfd_boolean is_opd; | |
794e51c0 AM |
12348 | /* Assume 'at' branch hints. */ |
12349 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12350 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12351 | |
65f38f15 | 12352 | /* Initialize howto table if needed. */ |
5bd4f169 | 12353 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12354 | ppc_howto_init (); |
12355 | ||
65f38f15 | 12356 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12357 | if (htab == NULL) |
12358 | return FALSE; | |
ee75fd95 AM |
12359 | |
12360 | /* Don't relocate stub sections. */ | |
12361 | if (input_section->owner == htab->stub_bfd) | |
12362 | return TRUE; | |
12363 | ||
0c8d6e5c | 12364 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 12365 | |
411e1bfb | 12366 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 12367 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 12368 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 12369 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 12370 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 12371 | |
5bd4f169 AM |
12372 | rel = relocs; |
12373 | relend = relocs + input_section->reloc_count; | |
12374 | for (; rel < relend; rel++) | |
12375 | { | |
04c9666a | 12376 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 12377 | bfd_vma addend; |
5bd4f169 AM |
12378 | bfd_reloc_status_type r; |
12379 | Elf_Internal_Sym *sym; | |
12380 | asection *sec; | |
039b3fef AM |
12381 | struct elf_link_hash_entry *h_elf; |
12382 | struct ppc_link_hash_entry *h; | |
12383 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 12384 | const char *sym_name; |
0d4792f7 | 12385 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 12386 | bfd_vma toc_addend; |
f961d9dd AM |
12387 | unsigned char tls_mask, tls_gd, tls_type; |
12388 | unsigned char sym_type; | |
5bd4f169 | 12389 | bfd_vma relocation; |
b34976b6 AM |
12390 | bfd_boolean unresolved_reloc; |
12391 | bfd_boolean warned; | |
bc30df16 | 12392 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 12393 | unsigned int insn; |
e11840f9 | 12394 | unsigned int mask; |
721956f4 AM |
12395 | struct ppc_stub_hash_entry *stub_entry; |
12396 | bfd_vma max_br_offset; | |
12397 | bfd_vma from; | |
31c76678 | 12398 | const Elf_Internal_Rela orig_rel = *rel; |
5bd4f169 | 12399 | |
4ce794b7 | 12400 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 12401 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
12402 | |
12403 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
12404 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
12405 | proper TOC base to use. */ | |
12406 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
12407 | && rel != relocs | |
12408 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
12409 | && is_opd) | |
12410 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
12411 | ||
4ce794b7 AM |
12412 | sym = NULL; |
12413 | sec = NULL; | |
039b3fef | 12414 | h_elf = NULL; |
4ce794b7 | 12415 | sym_name = NULL; |
b34976b6 AM |
12416 | unresolved_reloc = FALSE; |
12417 | warned = FALSE; | |
65f38f15 | 12418 | |
0b13192e | 12419 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
12420 | { |
12421 | /* It's a local symbol. */ | |
74f0fb50 | 12422 | struct _opd_sec_data *opd; |
4025353c | 12423 | |
5bd4f169 AM |
12424 | sym = local_syms + r_symndx; |
12425 | sec = local_sections[r_symndx]; | |
26c61ae5 | 12426 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 12427 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 12428 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
12429 | opd = get_opd_info (sec); |
12430 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 12431 | { |
74f0fb50 | 12432 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
12433 | if (adjust == -1) |
12434 | relocation = 0; | |
12435 | else | |
4cc603a5 AM |
12436 | { |
12437 | /* If this is a relocation against the opd section sym | |
12438 | and we have edited .opd, adjust the reloc addend so | |
12439 | that ld -r and ld --emit-relocs output is correct. | |
12440 | If it is a reloc against some other .opd symbol, | |
12441 | then the symbol value will be adjusted later. */ | |
12442 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12443 | rel->r_addend += adjust; | |
12444 | else | |
12445 | relocation += adjust; | |
12446 | } | |
1e2f5b6e | 12447 | } |
5bd4f169 AM |
12448 | } |
12449 | else | |
12450 | { | |
b2a8e766 AM |
12451 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
12452 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 12453 | h_elf, sec, relocation, |
b2a8e766 | 12454 | unresolved_reloc, warned); |
039b3fef AM |
12455 | sym_name = h_elf->root.root.string; |
12456 | sym_type = h_elf->type; | |
b69fdb4e AM |
12457 | if (sec != NULL |
12458 | && sec->owner == output_bfd | |
12459 | && strcmp (sec->name, ".opd") == 0) | |
12460 | { | |
12461 | /* This is a symbol defined in a linker script. All | |
12462 | such are defined in output sections, even those | |
12463 | defined by simple assignment from a symbol defined in | |
12464 | an input section. Transfer the symbol to an | |
12465 | appropriate input .opd section, so that a branch to | |
12466 | this symbol will be mapped to the location specified | |
12467 | by the opd entry. */ | |
12468 | struct bfd_link_order *lo; | |
12469 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
12470 | if (lo->type == bfd_indirect_link_order) | |
12471 | { | |
12472 | asection *isec = lo->u.indirect.section; | |
12473 | if (h_elf->root.u.def.value >= isec->output_offset | |
12474 | && h_elf->root.u.def.value < (isec->output_offset | |
12475 | + isec->size)) | |
12476 | { | |
12477 | h_elf->root.u.def.value -= isec->output_offset; | |
12478 | h_elf->root.u.def.section = isec; | |
12479 | sec = isec; | |
12480 | break; | |
12481 | } | |
12482 | } | |
12483 | } | |
5bd4f169 | 12484 | } |
039b3fef | 12485 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 12486 | |
dbaa2011 | 12487 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 12488 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
12489 | rel, 1, relend, |
12490 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 12491 | contents); |
ab96bf03 AM |
12492 | |
12493 | if (info->relocatable) | |
12494 | continue; | |
12495 | ||
f40da81b AM |
12496 | if (h != NULL && &h->elf == htab->elf.hgot) |
12497 | { | |
12498 | relocation = (TOCstart | |
12499 | + htab->stub_group[input_section->id].toc_off); | |
12500 | sec = bfd_abs_section_ptr; | |
12501 | unresolved_reloc = FALSE; | |
12502 | } | |
12503 | ||
951fd09b AM |
12504 | /* TLS optimizations. Replace instruction sequences and relocs |
12505 | based on information we collected in tls_optimize. We edit | |
12506 | RELOCS so that --emit-relocs will output something sensible | |
12507 | for the final instruction stream. */ | |
12508 | tls_mask = 0; | |
12509 | tls_gd = 0; | |
0d4792f7 | 12510 | toc_symndx = 0; |
727fc41e AM |
12511 | if (h != NULL) |
12512 | tls_mask = h->tls_mask; | |
12513 | else if (local_got_ents != NULL) | |
411e1bfb | 12514 | { |
e054468f AM |
12515 | struct plt_entry **local_plt = (struct plt_entry **) |
12516 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 12517 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 12518 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
12519 | tls_mask = lgot_masks[r_symndx]; |
12520 | } | |
12521 | if (tls_mask == 0 | |
12522 | && (r_type == R_PPC64_TLS | |
12523 | || r_type == R_PPC64_TLSGD | |
12524 | || r_type == R_PPC64_TLSLD)) | |
12525 | { | |
12526 | /* Check for toc tls entries. */ | |
f961d9dd | 12527 | unsigned char *toc_tls; |
0d4792f7 | 12528 | |
727fc41e AM |
12529 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12530 | &local_syms, rel, input_bfd)) | |
12531 | return FALSE; | |
0d4792f7 | 12532 | |
727fc41e AM |
12533 | if (toc_tls) |
12534 | tls_mask = *toc_tls; | |
0d4792f7 AM |
12535 | } |
12536 | ||
12537 | /* Check that tls relocs are used with tls syms, and non-tls | |
12538 | relocs are used with non-tls syms. */ | |
cf35638d | 12539 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
12540 | && r_type != R_PPC64_NONE |
12541 | && (h == NULL | |
039b3fef AM |
12542 | || h->elf.root.type == bfd_link_hash_defined |
12543 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
12544 | && (IS_PPC64_TLS_RELOC (r_type) |
12545 | != (sym_type == STT_TLS | |
12546 | || (sym_type == STT_SECTION | |
12547 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 12548 | { |
727fc41e AM |
12549 | if (tls_mask != 0 |
12550 | && (r_type == R_PPC64_TLS | |
12551 | || r_type == R_PPC64_TLSGD | |
12552 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
12553 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
12554 | ; | |
12555 | else | |
25f53a85 | 12556 | info->callbacks->einfo |
1d483afe | 12557 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
12558 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
12559 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 12560 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
12561 | ppc64_elf_howto_table[r_type]->name, |
12562 | sym_name); | |
411e1bfb AM |
12563 | } |
12564 | ||
12565 | /* Ensure reloc mapping code below stays sane. */ | |
12566 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
12567 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
12568 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
12569 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
12570 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
12571 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
12572 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
12573 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
12574 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
12575 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
12576 | abort (); | |
0d4792f7 | 12577 | |
411e1bfb AM |
12578 | switch (r_type) |
12579 | { | |
12580 | default: | |
411e1bfb AM |
12581 | break; |
12582 | ||
ba761f19 AM |
12583 | case R_PPC64_LO_DS_OPT: |
12584 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
12585 | if ((insn & (0x3f << 26)) != 58u << 26) | |
12586 | abort (); | |
12587 | insn += (14u << 26) - (58u << 26); | |
12588 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
12589 | r_type = R_PPC64_TOC16_LO; | |
12590 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12591 | break; | |
12592 | ||
411e1bfb AM |
12593 | case R_PPC64_TOC16: |
12594 | case R_PPC64_TOC16_LO: | |
12595 | case R_PPC64_TOC16_DS: | |
12596 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
12597 | { |
12598 | /* Check for toc tls entries. */ | |
f961d9dd | 12599 | unsigned char *toc_tls; |
951fd09b | 12600 | int retval; |
411e1bfb | 12601 | |
3a71aa26 AM |
12602 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12603 | &local_syms, rel, input_bfd); | |
951fd09b | 12604 | if (retval == 0) |
411e1bfb AM |
12605 | return FALSE; |
12606 | ||
12607 | if (toc_tls) | |
12608 | { | |
951fd09b | 12609 | tls_mask = *toc_tls; |
411e1bfb AM |
12610 | if (r_type == R_PPC64_TOC16_DS |
12611 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
12612 | { |
12613 | if (tls_mask != 0 | |
12614 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
12615 | goto toctprel; | |
12616 | } | |
411e1bfb | 12617 | else |
951fd09b AM |
12618 | { |
12619 | /* If we found a GD reloc pair, then we might be | |
12620 | doing a GD->IE transition. */ | |
12621 | if (retval == 2) | |
12622 | { | |
12623 | tls_gd = TLS_TPRELGD; | |
12624 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12625 | goto tls_ldgd_opt; |
951fd09b AM |
12626 | } |
12627 | else if (retval == 3) | |
12628 | { | |
12629 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 12630 | goto tls_ldgd_opt; |
951fd09b AM |
12631 | } |
12632 | } | |
411e1bfb AM |
12633 | } |
12634 | } | |
12635 | break; | |
12636 | ||
9d6ded02 AM |
12637 | case R_PPC64_GOT_TPREL16_HI: |
12638 | case R_PPC64_GOT_TPREL16_HA: | |
12639 | if (tls_mask != 0 | |
12640 | && (tls_mask & TLS_TPREL) == 0) | |
12641 | { | |
12642 | rel->r_offset -= d_offset; | |
12643 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
12644 | r_type = R_PPC64_NONE; | |
12645 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12646 | } | |
12647 | break; | |
12648 | ||
411e1bfb AM |
12649 | case R_PPC64_GOT_TPREL16_DS: |
12650 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
12651 | if (tls_mask != 0 |
12652 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12653 | { |
81407a69 | 12654 | toctprel: |
4fe5ca5b | 12655 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
12656 | insn &= 31 << 21; |
12657 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 12658 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 12659 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
12660 | if (toc_symndx != 0) |
12661 | { | |
12662 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12663 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12664 | /* We changed the symbol. Start over in order to |
12665 | get h, sym, sec etc. right. */ | |
12666 | rel--; | |
12667 | continue; | |
12668 | } | |
12669 | else | |
12670 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12671 | } |
12672 | break; | |
12673 | ||
12674 | case R_PPC64_TLS: | |
951fd09b AM |
12675 | if (tls_mask != 0 |
12676 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12677 | { |
411e1bfb | 12678 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
12679 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
12680 | if (insn == 0) | |
411e1bfb | 12681 | abort (); |
411e1bfb | 12682 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 12683 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
12684 | PPC64_TPREL16_LO which is at low-order half-word. */ |
12685 | rel->r_offset += d_offset; | |
0d4792f7 AM |
12686 | r_type = R_PPC64_TPREL16_LO; |
12687 | if (toc_symndx != 0) | |
12688 | { | |
12689 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12690 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12691 | /* We changed the symbol. Start over in order to |
12692 | get h, sym, sec etc. right. */ | |
12693 | rel--; | |
12694 | continue; | |
12695 | } | |
12696 | else | |
12697 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12698 | } |
12699 | break; | |
12700 | ||
411e1bfb AM |
12701 | case R_PPC64_GOT_TLSGD16_HI: |
12702 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
12703 | tls_gd = TLS_TPRELGD; |
12704 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12705 | goto tls_gdld_hi; | |
12706 | break; | |
12707 | ||
411e1bfb AM |
12708 | case R_PPC64_GOT_TLSLD16_HI: |
12709 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12710 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 12711 | { |
951fd09b AM |
12712 | tls_gdld_hi: |
12713 | if ((tls_mask & tls_gd) != 0) | |
12714 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12715 | + R_PPC64_GOT_TPREL16_DS); | |
12716 | else | |
411e1bfb | 12717 | { |
4fe5ca5b | 12718 | rel->r_offset -= d_offset; |
727ac201 | 12719 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 12720 | r_type = R_PPC64_NONE; |
411e1bfb | 12721 | } |
951fd09b | 12722 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
12723 | } |
12724 | break; | |
12725 | ||
951fd09b AM |
12726 | case R_PPC64_GOT_TLSGD16: |
12727 | case R_PPC64_GOT_TLSGD16_LO: | |
12728 | tls_gd = TLS_TPRELGD; | |
12729 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12730 | goto tls_ldgd_opt; |
951fd09b | 12731 | break; |
411e1bfb | 12732 | |
951fd09b AM |
12733 | case R_PPC64_GOT_TLSLD16: |
12734 | case R_PPC64_GOT_TLSLD16_LO: | |
12735 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12736 | { | |
3a71aa26 | 12737 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
12738 | bfd_vma offset; |
12739 | ||
12740 | tls_ldgd_opt: | |
727fc41e AM |
12741 | offset = (bfd_vma) -1; |
12742 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
12743 | __tls_get_addr calls, we must trust that the call | |
12744 | stays with its arg setup insns, ie. that the next | |
12745 | reloc is the __tls_get_addr call associated with | |
12746 | the current reloc. Edit both insns. */ | |
12747 | if (input_section->has_tls_get_addr_call | |
12748 | && rel + 1 < relend | |
12749 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
12750 | htab->tls_get_addr, | |
12751 | htab->tls_get_addr_fd)) | |
12752 | offset = rel[1].r_offset; | |
102890f0 | 12753 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 12754 | { |
102890f0 | 12755 | /* IE */ |
3a71aa26 AM |
12756 | insn1 = bfd_get_32 (output_bfd, |
12757 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
12758 | insn1 &= (1 << 26) - (1 << 2); |
12759 | insn1 |= 58 << 26; /* ld */ | |
12760 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 12761 | if (offset != (bfd_vma) -1) |
f58d5a2d | 12762 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
12763 | if ((tls_mask & TLS_EXPLICIT) == 0) |
12764 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12765 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 12766 | else |
102890f0 AM |
12767 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
12768 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12769 | } | |
12770 | else | |
12771 | { | |
12772 | /* LE */ | |
12773 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
12774 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12775 | if (tls_gd == 0) | |
951fd09b | 12776 | { |
102890f0 | 12777 | /* Was an LD reloc. */ |
1d483afe AM |
12778 | if (toc_symndx) |
12779 | sec = local_sections[toc_symndx]; | |
12780 | for (r_symndx = 0; | |
12781 | r_symndx < symtab_hdr->sh_info; | |
12782 | r_symndx++) | |
12783 | if (local_sections[r_symndx] == sec) | |
12784 | break; | |
12785 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12786 | r_symndx = STN_UNDEF; |
102890f0 | 12787 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12788 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
12789 | rel->r_addend -= (local_syms[r_symndx].st_value |
12790 | + sec->output_offset | |
12791 | + sec->output_section->vma); | |
951fd09b | 12792 | } |
102890f0 | 12793 | else if (toc_symndx != 0) |
3a71aa26 AM |
12794 | { |
12795 | r_symndx = toc_symndx; | |
12796 | rel->r_addend = toc_addend; | |
12797 | } | |
102890f0 AM |
12798 | r_type = R_PPC64_TPREL16_HA; |
12799 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
12800 | if (offset != (bfd_vma) -1) |
12801 | { | |
12802 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
12803 | R_PPC64_TPREL16_LO); | |
12804 | rel[1].r_offset = offset + d_offset; | |
12805 | rel[1].r_addend = rel->r_addend; | |
12806 | } | |
102890f0 | 12807 | } |
3a71aa26 AM |
12808 | bfd_put_32 (output_bfd, insn1, |
12809 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
12810 | if (offset != (bfd_vma) -1) |
12811 | { | |
12812 | insn3 = bfd_get_32 (output_bfd, | |
12813 | contents + offset + 4); | |
12814 | if (insn3 == NOP | |
12815 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12816 | { | |
12817 | rel[1].r_offset += 4; | |
12818 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12819 | insn2 = NOP; | |
12820 | } | |
12821 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12822 | } | |
12823 | if ((tls_mask & tls_gd) == 0 | |
12824 | && (tls_gd == 0 || toc_symndx != 0)) | |
12825 | { | |
12826 | /* We changed the symbol. Start over in order | |
12827 | to get h, sym, sec etc. right. */ | |
12828 | rel--; | |
12829 | continue; | |
12830 | } | |
12831 | } | |
12832 | break; | |
12833 | ||
12834 | case R_PPC64_TLSGD: | |
12835 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12836 | { | |
12837 | unsigned int insn2, insn3; | |
12838 | bfd_vma offset = rel->r_offset; | |
12839 | ||
12840 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12841 | { | |
12842 | /* IE */ | |
12843 | r_type = R_PPC64_NONE; | |
12844 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
12845 | } | |
12846 | else | |
12847 | { | |
12848 | /* LE */ | |
12849 | if (toc_symndx != 0) | |
12850 | { | |
12851 | r_symndx = toc_symndx; | |
12852 | rel->r_addend = toc_addend; | |
12853 | } | |
12854 | r_type = R_PPC64_TPREL16_LO; | |
12855 | rel->r_offset = offset + d_offset; | |
12856 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12857 | } | |
12858 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12859 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12860 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12861 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
12862 | insn3 = bfd_get_32 (output_bfd, |
12863 | contents + offset + 4); | |
102890f0 AM |
12864 | if (insn3 == NOP |
12865 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12866 | { | |
727fc41e | 12867 | rel->r_offset += 4; |
3a71aa26 AM |
12868 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
12869 | insn2 = NOP; | |
102890f0 | 12870 | } |
102890f0 | 12871 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 12872 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 12873 | { |
102890f0 AM |
12874 | rel--; |
12875 | continue; | |
411e1bfb | 12876 | } |
411e1bfb | 12877 | } |
411e1bfb AM |
12878 | break; |
12879 | ||
727fc41e AM |
12880 | case R_PPC64_TLSLD: |
12881 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12882 | { | |
12883 | unsigned int insn2, insn3; | |
12884 | bfd_vma offset = rel->r_offset; | |
12885 | ||
12886 | if (toc_symndx) | |
12887 | sec = local_sections[toc_symndx]; | |
12888 | for (r_symndx = 0; | |
12889 | r_symndx < symtab_hdr->sh_info; | |
12890 | r_symndx++) | |
12891 | if (local_sections[r_symndx] == sec) | |
12892 | break; | |
12893 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12894 | r_symndx = STN_UNDEF; |
727fc41e | 12895 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12896 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
12897 | rel->r_addend -= (local_syms[r_symndx].st_value |
12898 | + sec->output_offset | |
12899 | + sec->output_section->vma); | |
12900 | ||
12901 | r_type = R_PPC64_TPREL16_LO; | |
12902 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12903 | rel->r_offset = offset + d_offset; | |
12904 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12905 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12906 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
12907 | insn2 = 0x38630000; /* addi 3,3,0 */ |
12908 | insn3 = bfd_get_32 (output_bfd, | |
12909 | contents + offset + 4); | |
12910 | if (insn3 == NOP | |
12911 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12912 | { | |
12913 | rel->r_offset += 4; | |
12914 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12915 | insn2 = NOP; | |
12916 | } | |
12917 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12918 | rel--; | |
12919 | continue; | |
12920 | } | |
12921 | break; | |
12922 | ||
411e1bfb | 12923 | case R_PPC64_DTPMOD64: |
951fd09b AM |
12924 | if (rel + 1 < relend |
12925 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
12926 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 12927 | { |
951fd09b AM |
12928 | if ((tls_mask & TLS_GD) == 0) |
12929 | { | |
12930 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
12931 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12932 | r_type = R_PPC64_TPREL64; | |
12933 | else | |
12934 | { | |
4ce794b7 | 12935 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
12936 | r_type = R_PPC64_NONE; |
12937 | } | |
12938 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12939 | } | |
12940 | } | |
12941 | else | |
12942 | { | |
12943 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 12944 | { |
4ce794b7 | 12945 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 12946 | r_type = R_PPC64_NONE; |
951fd09b | 12947 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 12948 | } |
411e1bfb AM |
12949 | } |
12950 | break; | |
12951 | ||
12952 | case R_PPC64_TPREL64: | |
951fd09b | 12953 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
12954 | { |
12955 | r_type = R_PPC64_NONE; | |
12956 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12957 | } | |
12958 | break; | |
12959 | } | |
12960 | ||
12961 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 12962 | insn = 0; |
b25116a9 AM |
12963 | max_br_offset = 1 << 25; |
12964 | addend = rel->r_addend; | |
bc30df16 | 12965 | reloc_dest = DEST_NORMAL; |
65f38f15 | 12966 | switch (r_type) |
5bd4f169 AM |
12967 | { |
12968 | default: | |
65f38f15 | 12969 | break; |
5bd4f169 | 12970 | |
3b421ab3 AM |
12971 | case R_PPC64_TOCSAVE: |
12972 | if (relocation + addend == (rel->r_offset | |
12973 | + input_section->output_offset | |
12974 | + input_section->output_section->vma) | |
12975 | && tocsave_find (htab, NO_INSERT, | |
12976 | &local_syms, rel, input_bfd)) | |
12977 | { | |
12978 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
12979 | if (insn == NOP | |
12980 | || insn == CROR_151515 || insn == CROR_313131) | |
12981 | bfd_put_32 (input_bfd, STD_R2_40R1, | |
12982 | contents + rel->r_offset); | |
12983 | } | |
12984 | break; | |
12985 | ||
65f38f15 AM |
12986 | /* Branch taken prediction relocations. */ |
12987 | case R_PPC64_ADDR14_BRTAKEN: | |
12988 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
12989 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
12990 | /* Fall thru. */ | |
65f38f15 | 12991 | |
86c76c7b | 12992 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
12993 | case R_PPC64_ADDR14_BRNTAKEN: |
12994 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
12995 | insn |= bfd_get_32 (output_bfd, |
12996 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 12997 | /* Fall thru. */ |
86c76c7b | 12998 | |
b25116a9 AM |
12999 | case R_PPC64_REL14: |
13000 | max_br_offset = 1 << 15; | |
13001 | /* Fall thru. */ | |
5bd4f169 | 13002 | |
65f38f15 | 13003 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13004 | /* Calls to functions with a different TOC, such as calls to |
13005 | shared objects, need to alter the TOC pointer. This is | |
13006 | done using a linkage stub. A REL24 branching to these | |
13007 | linkage stubs needs to be followed by a nop, as the nop | |
13008 | will be replaced with an instruction to restore the TOC | |
13009 | base pointer. */ | |
8387904d | 13010 | fdh = h; |
b31867b6 AM |
13011 | if (h != NULL |
13012 | && h->oh != NULL | |
13013 | && h->oh->is_func_descriptor) | |
13014 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13015 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13016 | htab); | |
6abec6bc | 13017 | if (stub_entry != NULL |
ad8e1ba5 | 13018 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13019 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13020 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13021 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13022 | { |
b25116a9 | 13023 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13024 | |
ba8ca3e7 AM |
13025 | /* All of these stubs will modify r2, so there must be a |
13026 | branch and link followed by a nop. The nop is | |
13027 | replaced by an insn to restore r2. */ | |
eea6121a | 13028 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13029 | { |
ba8ca3e7 AM |
13030 | unsigned long br; |
13031 | ||
13032 | br = bfd_get_32 (input_bfd, | |
13033 | contents + rel->r_offset); | |
13034 | if ((br & 1) != 0) | |
41bd81ab | 13035 | { |
ba8ca3e7 AM |
13036 | unsigned long nop; |
13037 | ||
13038 | nop = bfd_get_32 (input_bfd, | |
13039 | contents + rel->r_offset + 4); | |
13040 | if (nop == NOP | |
13041 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13042 | { |
ba8ca3e7 AM |
13043 | if (h != NULL |
13044 | && (h == htab->tls_get_addr_fd | |
13045 | || h == htab->tls_get_addr) | |
13046 | && !htab->no_tls_get_addr_opt) | |
13047 | { | |
13048 | /* Special stub used, leave nop alone. */ | |
13049 | } | |
13050 | else | |
13051 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
13052 | contents + rel->r_offset + 4); | |
13053 | can_plt_call = TRUE; | |
a7f2871e | 13054 | } |
41bd81ab | 13055 | } |
5bd4f169 | 13056 | } |
721956f4 | 13057 | |
ba8ca3e7 | 13058 | if (!can_plt_call && h != NULL) |
721956f4 | 13059 | { |
ba8ca3e7 AM |
13060 | const char *name = h->elf.root.root.string; |
13061 | ||
13062 | if (*name == '.') | |
13063 | ++name; | |
13064 | ||
13065 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13066 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13067 | { |
ba8ca3e7 AM |
13068 | /* Allow crt1 branch to go via a toc adjusting |
13069 | stub. Other calls that never return could do | |
13070 | the same, if we could detect such. */ | |
b25116a9 | 13071 | can_plt_call = TRUE; |
6ab189d5 | 13072 | } |
ba8ca3e7 AM |
13073 | } |
13074 | ||
13075 | if (!can_plt_call) | |
13076 | { | |
13077 | /* g++ as of 20130507 emits self-calls without a | |
13078 | following nop. This is arguably wrong since we | |
13079 | have conflicting information. On the one hand a | |
13080 | global symbol and on the other a local call | |
13081 | sequence, but don't error for this special case. | |
13082 | It isn't possible to cheaply verify we have | |
13083 | exactly such a call. Allow all calls to the same | |
13084 | section. */ | |
13085 | asection *code_sec = sec; | |
13086 | ||
13087 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13088 | { |
ba8ca3e7 AM |
13089 | bfd_vma off = (relocation + addend |
13090 | - sec->output_section->vma | |
13091 | - sec->output_offset); | |
bc30df16 | 13092 | |
ba8ca3e7 | 13093 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13094 | } |
ba8ca3e7 AM |
13095 | if (code_sec == input_section) |
13096 | can_plt_call = TRUE; | |
13097 | } | |
13098 | ||
13099 | if (!can_plt_call) | |
13100 | { | |
13101 | info->callbacks->einfo | |
13102 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13103 | "recompile with -fPIC"), | |
13104 | input_bfd, input_section, rel->r_offset, sym_name); | |
13105 | ||
13106 | bfd_set_error (bfd_error_bad_value); | |
13107 | ret = FALSE; | |
721956f4 AM |
13108 | } |
13109 | ||
b25116a9 | 13110 | if (can_plt_call |
794e51c0 AM |
13111 | && (stub_entry->stub_type == ppc_stub_plt_call |
13112 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13113 | unresolved_reloc = FALSE; |
13114 | } | |
13115 | ||
6abec6bc AM |
13116 | if ((stub_entry == NULL |
13117 | || stub_entry->stub_type == ppc_stub_long_branch | |
13118 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13119 | && get_opd_info (sec) != NULL) |
13120 | { | |
13121 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13122 | bfd_vma off = (relocation + addend |
13123 | - sec->output_section->vma | |
13124 | - sec->output_offset); | |
aef36ac1 | 13125 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13126 | if (dest != (bfd_vma) -1) |
13127 | { | |
13128 | relocation = dest; | |
13129 | addend = 0; | |
bc30df16 | 13130 | reloc_dest = DEST_OPD; |
8387904d AM |
13131 | } |
13132 | } | |
13133 | ||
b25116a9 AM |
13134 | /* If the branch is out of reach we ought to have a long |
13135 | branch stub. */ | |
13136 | from = (rel->r_offset | |
13137 | + input_section->output_offset | |
13138 | + input_section->output_section->vma); | |
13139 | ||
6abec6bc AM |
13140 | if (stub_entry != NULL |
13141 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13142 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13143 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13144 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13145 | || (relocation + addend - from + max_br_offset | |
13146 | < 2 * max_br_offset))) | |
13147 | /* Don't use the stub if this branch is in range. */ | |
13148 | stub_entry = NULL; | |
b25116a9 AM |
13149 | |
13150 | if (stub_entry != NULL) | |
13151 | { | |
13152 | /* Munge up the value and addend so that we call the stub | |
13153 | rather than the procedure directly. */ | |
13154 | relocation = (stub_entry->stub_offset | |
13155 | + stub_entry->stub_sec->output_offset | |
13156 | + stub_entry->stub_sec->output_section->vma); | |
13157 | addend = 0; | |
bc30df16 | 13158 | reloc_dest = DEST_STUB; |
3b421ab3 | 13159 | |
794e51c0 AM |
13160 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13161 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13162 | && (ALWAYS_EMIT_R2SAVE | |
13163 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13164 | && rel + 1 < relend |
13165 | && rel[1].r_offset == rel->r_offset + 4 | |
13166 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13167 | relocation += 4; | |
b25116a9 AM |
13168 | } |
13169 | ||
13170 | if (insn != 0) | |
13171 | { | |
794e51c0 | 13172 | if (is_isa_v2) |
721956f4 | 13173 | { |
b25116a9 AM |
13174 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13175 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13176 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13177 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13178 | insn |= 0x02 << 21; | |
13179 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13180 | insn |= 0x08 << 21; | |
13181 | else | |
13182 | break; | |
13183 | } | |
13184 | else | |
13185 | { | |
13186 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13187 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13188 | insn ^= 0x01 << 21; |
721956f4 | 13189 | } |
b25116a9 AM |
13190 | |
13191 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13192 | } |
e86ce104 | 13193 | |
06da1e8e AM |
13194 | /* NOP out calls to undefined weak functions. |
13195 | We can thus call a weak function without first | |
13196 | checking whether the function is defined. */ | |
b25116a9 | 13197 | else if (h != NULL |
039b3fef | 13198 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13199 | && h->elf.dynindx == -1 |
b25116a9 AM |
13200 | && r_type == R_PPC64_REL24 |
13201 | && relocation == 0 | |
4cc603a5 | 13202 | && addend == 0) |
e86ce104 | 13203 | { |
06da1e8e AM |
13204 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13205 | continue; | |
e86ce104 | 13206 | } |
65f38f15 AM |
13207 | break; |
13208 | } | |
5bd4f169 | 13209 | |
65f38f15 | 13210 | /* Set `addend'. */ |
411e1bfb | 13211 | tls_type = 0; |
65f38f15 AM |
13212 | switch (r_type) |
13213 | { | |
13214 | default: | |
25f53a85 | 13215 | info->callbacks->einfo |
bc30df16 | 13216 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13217 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13218 | |
65f38f15 | 13219 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13220 | ret = FALSE; |
65f38f15 | 13221 | continue; |
5bd4f169 | 13222 | |
65f38f15 | 13223 | case R_PPC64_NONE: |
411e1bfb | 13224 | case R_PPC64_TLS: |
727fc41e AM |
13225 | case R_PPC64_TLSGD: |
13226 | case R_PPC64_TLSLD: | |
3b421ab3 | 13227 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13228 | case R_PPC64_GNU_VTINHERIT: |
13229 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13230 | continue; |
5bd4f169 AM |
13231 | |
13232 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13233 | address in the GOT as relocation value instead of the | |
411e1bfb | 13234 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13235 | symbol and put the symbol value there. */ |
411e1bfb AM |
13236 | case R_PPC64_GOT_TLSGD16: |
13237 | case R_PPC64_GOT_TLSGD16_LO: | |
13238 | case R_PPC64_GOT_TLSGD16_HI: | |
13239 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13240 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13241 | goto dogot; |
13242 | ||
13243 | case R_PPC64_GOT_TLSLD16: | |
13244 | case R_PPC64_GOT_TLSLD16_LO: | |
13245 | case R_PPC64_GOT_TLSLD16_HI: | |
13246 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13247 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13248 | goto dogot; |
13249 | ||
13250 | case R_PPC64_GOT_TPREL16_DS: | |
13251 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13252 | case R_PPC64_GOT_TPREL16_HI: | |
13253 | case R_PPC64_GOT_TPREL16_HA: | |
13254 | tls_type = TLS_TLS | TLS_TPREL; | |
13255 | goto dogot; | |
13256 | ||
13257 | case R_PPC64_GOT_DTPREL16_DS: | |
13258 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13259 | case R_PPC64_GOT_DTPREL16_HI: | |
13260 | case R_PPC64_GOT_DTPREL16_HA: | |
13261 | tls_type = TLS_TLS | TLS_DTPREL; | |
13262 | goto dogot; | |
13263 | ||
65f38f15 AM |
13264 | case R_PPC64_GOT16: |
13265 | case R_PPC64_GOT16_LO: | |
13266 | case R_PPC64_GOT16_HI: | |
13267 | case R_PPC64_GOT16_HA: | |
13268 | case R_PPC64_GOT16_DS: | |
13269 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13270 | dogot: |
5bd4f169 AM |
13271 | { |
13272 | /* Relocation is to the entry for this symbol in the global | |
13273 | offset table. */ | |
e717da7e | 13274 | asection *got; |
d881513a | 13275 | bfd_vma *offp; |
5bd4f169 | 13276 | bfd_vma off; |
d881513a | 13277 | unsigned long indx = 0; |
927be08e | 13278 | struct got_entry *ent; |
65f38f15 | 13279 | |
d881513a AM |
13280 | if (tls_type == (TLS_TLS | TLS_LD) |
13281 | && (h == NULL | |
f5385ebf | 13282 | || !h->elf.def_dynamic)) |
927be08e | 13283 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13284 | else |
5bd4f169 | 13285 | { |
5bd4f169 | 13286 | |
d881513a AM |
13287 | if (h != NULL) |
13288 | { | |
13289 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13290 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13291 | &h->elf) | |
d881513a | 13292 | || (info->shared |
726d3ab0 | 13293 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
d881513a AM |
13294 | /* This is actually a static link, or it is a |
13295 | -Bsymbolic link and the symbol is defined | |
13296 | locally, or the symbol was forced to be local | |
13297 | because of a version file. */ | |
13298 | ; | |
13299 | else | |
13300 | { | |
14acf4dc | 13301 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13302 | indx = h->elf.dynindx; |
d881513a AM |
13303 | unresolved_reloc = FALSE; |
13304 | } | |
039b3fef | 13305 | ent = h->elf.got.glist; |
d881513a | 13306 | } |
411e1bfb | 13307 | else |
5bd4f169 | 13308 | { |
d881513a AM |
13309 | if (local_got_ents == NULL) |
13310 | abort (); | |
13311 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 13312 | } |
d881513a AM |
13313 | |
13314 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 13315 | if (ent->addend == orig_rel.r_addend |
e717da7e | 13316 | && ent->owner == input_bfd |
d881513a AM |
13317 | && ent->tls_type == tls_type) |
13318 | break; | |
5bd4f169 | 13319 | } |
411e1bfb | 13320 | |
927be08e AM |
13321 | if (ent == NULL) |
13322 | abort (); | |
13323 | if (ent->is_indirect) | |
13324 | ent = ent->got.ent; | |
13325 | offp = &ent->got.offset; | |
13326 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
13327 | if (got == NULL) |
13328 | abort (); | |
13329 | ||
411e1bfb AM |
13330 | /* The offset must always be a multiple of 8. We use the |
13331 | least significant bit to record whether we have already | |
13332 | processed this entry. */ | |
d881513a | 13333 | off = *offp; |
411e1bfb AM |
13334 | if ((off & 1) != 0) |
13335 | off &= ~1; | |
5bd4f169 AM |
13336 | else |
13337 | { | |
411e1bfb AM |
13338 | /* Generate relocs for the dynamic linker, except in |
13339 | the case of TLSLD where we'll use one entry per | |
13340 | module. */ | |
25f23106 AM |
13341 | asection *relgot; |
13342 | bfd_boolean ifunc; | |
e717da7e | 13343 | |
d881513a | 13344 | *offp = off | 1; |
25f23106 AM |
13345 | relgot = NULL; |
13346 | ifunc = (h != NULL | |
13347 | ? h->elf.type == STT_GNU_IFUNC | |
13348 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 13349 | if (ifunc) |
25f23106 | 13350 | relgot = htab->reliplt; |
19e08130 AM |
13351 | else if ((info->shared || indx != 0) |
13352 | && (h == NULL | |
13353 | || (tls_type == (TLS_TLS | TLS_LD) | |
13354 | && !h->elf.def_dynamic) | |
13355 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
13356 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
13357 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 13358 | if (relgot != NULL) |
5bd4f169 | 13359 | { |
e717da7e AM |
13360 | outrel.r_offset = (got->output_section->vma |
13361 | + got->output_offset | |
411e1bfb | 13362 | + off); |
4cc603a5 | 13363 | outrel.r_addend = addend; |
d881513a | 13364 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 13365 | { |
411e1bfb | 13366 | outrel.r_addend = 0; |
e515b051 | 13367 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
13368 | if (tls_type == (TLS_TLS | TLS_GD)) |
13369 | { | |
e717da7e AM |
13370 | loc = relgot->contents; |
13371 | loc += (relgot->reloc_count++ | |
d881513a AM |
13372 | * sizeof (Elf64_External_Rela)); |
13373 | bfd_elf64_swap_reloca_out (output_bfd, | |
13374 | &outrel, loc); | |
e515b051 | 13375 | outrel.r_offset += 8; |
4cc603a5 | 13376 | outrel.r_addend = addend; |
d881513a AM |
13377 | outrel.r_info |
13378 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 13379 | } |
411e1bfb | 13380 | } |
951fd09b | 13381 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 13382 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 13383 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13384 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
13385 | else if (indx != 0) |
13386 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
13387 | else | |
81407a69 | 13388 | { |
25f23106 AM |
13389 | if (ifunc) |
13390 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13391 | else | |
13392 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
13393 | |
13394 | /* Write the .got section contents for the sake | |
13395 | of prelink. */ | |
e717da7e | 13396 | loc = got->contents + off; |
23fbd6fa JJ |
13397 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
13398 | loc); | |
81407a69 | 13399 | } |
81407a69 AM |
13400 | |
13401 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
13402 | { |
13403 | outrel.r_addend += relocation; | |
13404 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 13405 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 13406 | } |
e717da7e AM |
13407 | loc = relgot->contents; |
13408 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
13409 | * sizeof (Elf64_External_Rela)); |
13410 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
13411 | } | |
13412 | ||
ad8e1ba5 | 13413 | /* Init the .got section contents here if we're not |
81407a69 | 13414 | emitting a reloc. */ |
d881513a | 13415 | else |
411e1bfb | 13416 | { |
4cc603a5 | 13417 | relocation += addend; |
7b609f53 AM |
13418 | if (tls_type == (TLS_TLS | TLS_LD)) |
13419 | relocation = 1; | |
13420 | else if (tls_type != 0) | |
411e1bfb | 13421 | { |
e1918d23 | 13422 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 13423 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13424 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 13425 | |
7b609f53 AM |
13426 | if (tls_type == (TLS_TLS | TLS_GD)) |
13427 | { | |
13428 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 13429 | got->contents + off + 8); |
7b609f53 AM |
13430 | relocation = 1; |
13431 | } | |
411e1bfb | 13432 | } |
7b609f53 | 13433 | |
411e1bfb | 13434 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 13435 | got->contents + off); |
5bd4f169 AM |
13436 | } |
13437 | } | |
13438 | ||
65f38f15 AM |
13439 | if (off >= (bfd_vma) -2) |
13440 | abort (); | |
13441 | ||
bf102f86 AM |
13442 | relocation = got->output_section->vma + got->output_offset + off; |
13443 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 13444 | } |
65f38f15 AM |
13445 | break; |
13446 | ||
13447 | case R_PPC64_PLT16_HA: | |
13448 | case R_PPC64_PLT16_HI: | |
13449 | case R_PPC64_PLT16_LO: | |
13450 | case R_PPC64_PLT32: | |
13451 | case R_PPC64_PLT64: | |
13452 | /* Relocation is to the entry for this symbol in the | |
13453 | procedure linkage table. */ | |
13454 | ||
13455 | /* Resolve a PLT reloc against a local symbol directly, | |
13456 | without using the procedure linkage table. */ | |
13457 | if (h == NULL) | |
13458 | break; | |
13459 | ||
411e1bfb AM |
13460 | /* It's possible that we didn't make a PLT entry for this |
13461 | symbol. This happens when statically linking PIC code, | |
13462 | or when using -Bsymbolic. Go find a match if there is a | |
13463 | PLT entry. */ | |
4ce794b7 | 13464 | if (htab->plt != NULL) |
65f38f15 | 13465 | { |
411e1bfb | 13466 | struct plt_entry *ent; |
039b3fef | 13467 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
31c76678 | 13468 | if (ent->addend == orig_rel.r_addend |
411e1bfb AM |
13469 | && ent->plt.offset != (bfd_vma) -1) |
13470 | { | |
4ce794b7 AM |
13471 | relocation = (htab->plt->output_section->vma |
13472 | + htab->plt->output_offset | |
411e1bfb AM |
13473 | + ent->plt.offset); |
13474 | unresolved_reloc = FALSE; | |
13475 | } | |
65f38f15 | 13476 | } |
65f38f15 | 13477 | break; |
5bd4f169 | 13478 | |
0b13192e AM |
13479 | case R_PPC64_TOC: |
13480 | /* Relocation value is TOC base. */ | |
13481 | relocation = TOCstart; | |
cf35638d | 13482 | if (r_symndx == STN_UNDEF) |
0b13192e | 13483 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
13484 | else if (unresolved_reloc) |
13485 | ; | |
13486 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
13487 | relocation += htab->stub_group[sec->id].toc_off; |
13488 | else | |
13489 | unresolved_reloc = TRUE; | |
ab96bf03 | 13490 | goto dodyn; |
0b13192e | 13491 | |
5bd4f169 AM |
13492 | /* TOC16 relocs. We want the offset relative to the TOC base, |
13493 | which is the address of the start of the TOC plus 0x8000. | |
13494 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
13495 | in this order. */ | |
65f38f15 AM |
13496 | case R_PPC64_TOC16: |
13497 | case R_PPC64_TOC16_LO: | |
13498 | case R_PPC64_TOC16_HI: | |
13499 | case R_PPC64_TOC16_DS: | |
13500 | case R_PPC64_TOC16_LO_DS: | |
13501 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 13502 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
13503 | break; |
13504 | ||
13505 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
13506 | case R_PPC64_SECTOFF: |
13507 | case R_PPC64_SECTOFF_LO: | |
13508 | case R_PPC64_SECTOFF_HI: | |
13509 | case R_PPC64_SECTOFF_DS: | |
13510 | case R_PPC64_SECTOFF_LO_DS: | |
13511 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 13512 | if (sec != NULL) |
65f38f15 | 13513 | addend -= sec->output_section->vma; |
5bd4f169 AM |
13514 | break; |
13515 | ||
25f23106 AM |
13516 | case R_PPC64_REL16: |
13517 | case R_PPC64_REL16_LO: | |
13518 | case R_PPC64_REL16_HI: | |
13519 | case R_PPC64_REL16_HA: | |
13520 | break; | |
13521 | ||
721956f4 AM |
13522 | case R_PPC64_REL14: |
13523 | case R_PPC64_REL14_BRNTAKEN: | |
13524 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
13525 | case R_PPC64_REL24: |
13526 | break; | |
13527 | ||
411e1bfb AM |
13528 | case R_PPC64_TPREL16: |
13529 | case R_PPC64_TPREL16_LO: | |
13530 | case R_PPC64_TPREL16_HI: | |
13531 | case R_PPC64_TPREL16_HA: | |
13532 | case R_PPC64_TPREL16_DS: | |
13533 | case R_PPC64_TPREL16_LO_DS: | |
13534 | case R_PPC64_TPREL16_HIGHER: | |
13535 | case R_PPC64_TPREL16_HIGHERA: | |
13536 | case R_PPC64_TPREL16_HIGHEST: | |
13537 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
13538 | if (h != NULL |
13539 | && h->elf.root.type == bfd_link_hash_undefweak | |
13540 | && h->elf.dynindx == -1) | |
13541 | { | |
13542 | /* Make this relocation against an undefined weak symbol | |
13543 | resolve to zero. This is really just a tweak, since | |
13544 | code using weak externs ought to check that they are | |
13545 | defined before using them. */ | |
13546 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
13547 | ||
13548 | insn = bfd_get_32 (output_bfd, p); | |
13549 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
13550 | if (insn != 0) | |
13551 | bfd_put_32 (output_bfd, insn, p); | |
13552 | break; | |
13553 | } | |
e1918d23 | 13554 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13555 | if (info->shared) |
13556 | /* The TPREL16 relocs shouldn't really be used in shared | |
13557 | libs as they will result in DT_TEXTREL being set, but | |
13558 | support them anyway. */ | |
13559 | goto dodyn; | |
13560 | break; | |
13561 | ||
13562 | case R_PPC64_DTPREL16: | |
13563 | case R_PPC64_DTPREL16_LO: | |
13564 | case R_PPC64_DTPREL16_HI: | |
13565 | case R_PPC64_DTPREL16_HA: | |
13566 | case R_PPC64_DTPREL16_DS: | |
13567 | case R_PPC64_DTPREL16_LO_DS: | |
13568 | case R_PPC64_DTPREL16_HIGHER: | |
13569 | case R_PPC64_DTPREL16_HIGHERA: | |
13570 | case R_PPC64_DTPREL16_HIGHEST: | |
13571 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 13572 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13573 | break; |
13574 | ||
e515b051 AM |
13575 | case R_PPC64_DTPMOD64: |
13576 | relocation = 1; | |
13577 | addend = 0; | |
13578 | goto dodyn; | |
13579 | ||
411e1bfb | 13580 | case R_PPC64_TPREL64: |
e1918d23 | 13581 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13582 | goto dodyn; |
13583 | ||
13584 | case R_PPC64_DTPREL64: | |
e1918d23 | 13585 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13586 | /* Fall thru */ |
13587 | ||
65f38f15 AM |
13588 | /* Relocations that may need to be propagated if this is a |
13589 | dynamic object. */ | |
04c9666a | 13590 | case R_PPC64_REL30: |
65f38f15 AM |
13591 | case R_PPC64_REL32: |
13592 | case R_PPC64_REL64: | |
13593 | case R_PPC64_ADDR14: | |
13594 | case R_PPC64_ADDR14_BRNTAKEN: | |
13595 | case R_PPC64_ADDR14_BRTAKEN: | |
13596 | case R_PPC64_ADDR16: | |
13597 | case R_PPC64_ADDR16_DS: | |
13598 | case R_PPC64_ADDR16_HA: | |
13599 | case R_PPC64_ADDR16_HI: | |
13600 | case R_PPC64_ADDR16_HIGHER: | |
13601 | case R_PPC64_ADDR16_HIGHERA: | |
13602 | case R_PPC64_ADDR16_HIGHEST: | |
13603 | case R_PPC64_ADDR16_HIGHESTA: | |
13604 | case R_PPC64_ADDR16_LO: | |
13605 | case R_PPC64_ADDR16_LO_DS: | |
13606 | case R_PPC64_ADDR24: | |
65f38f15 AM |
13607 | case R_PPC64_ADDR32: |
13608 | case R_PPC64_ADDR64: | |
13609 | case R_PPC64_UADDR16: | |
13610 | case R_PPC64_UADDR32: | |
13611 | case R_PPC64_UADDR64: | |
411e1bfb | 13612 | dodyn: |
5d1634d7 | 13613 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
13614 | break; |
13615 | ||
41bd81ab AM |
13616 | if (NO_OPD_RELOCS && is_opd) |
13617 | break; | |
13618 | ||
65f38f15 | 13619 | if ((info->shared |
4e795f50 | 13620 | && (h == NULL |
039b3fef AM |
13621 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
13622 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 13623 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 13624 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
13625 | || (ELIMINATE_COPY_RELOCS |
13626 | && !info->shared | |
65f38f15 | 13627 | && h != NULL |
039b3fef | 13628 | && h->elf.dynindx != -1 |
f5385ebf | 13629 | && !h->elf.non_got_ref |
25f23106 AM |
13630 | && !h->elf.def_regular) |
13631 | || (!info->shared | |
13632 | && (h != NULL | |
13633 | ? h->elf.type == STT_GNU_IFUNC | |
13634 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 13635 | { |
b34976b6 | 13636 | bfd_boolean skip, relocate; |
65f38f15 | 13637 | asection *sreloc; |
1cf1f670 | 13638 | bfd_vma out_off; |
65f38f15 AM |
13639 | |
13640 | /* When generating a dynamic object, these relocations | |
13641 | are copied into the output file to be resolved at run | |
13642 | time. */ | |
13643 | ||
b34976b6 AM |
13644 | skip = FALSE; |
13645 | relocate = FALSE; | |
65f38f15 | 13646 | |
1cf1f670 AM |
13647 | out_off = _bfd_elf_section_offset (output_bfd, info, |
13648 | input_section, rel->r_offset); | |
13649 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 13650 | skip = TRUE; |
1cf1f670 | 13651 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 13652 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
13653 | out_off += (input_section->output_section->vma |
13654 | + input_section->output_offset); | |
13655 | outrel.r_offset = out_off; | |
411e1bfb | 13656 | outrel.r_addend = rel->r_addend; |
65f38f15 | 13657 | |
1cf1f670 AM |
13658 | /* Optimize unaligned reloc use. */ |
13659 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
13660 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
13661 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
13662 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
13663 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
13664 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
13665 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
13666 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
13667 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
13668 | ||
65f38f15 | 13669 | if (skip) |
0bb2d96a | 13670 | memset (&outrel, 0, sizeof outrel); |
726d3ab0 | 13671 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
0b13192e AM |
13672 | && !is_opd |
13673 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
13674 | { |
13675 | BFD_ASSERT (h->elf.dynindx != -1); | |
13676 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
13677 | } | |
65f38f15 AM |
13678 | else |
13679 | { | |
41bd81ab AM |
13680 | /* This symbol is local, or marked to become local, |
13681 | or this is an opd section reloc which must point | |
13682 | at a local function. */ | |
65f38f15 | 13683 | outrel.r_addend += relocation; |
e86ce104 | 13684 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 13685 | { |
3fad3c7c | 13686 | if (is_opd && h != NULL) |
afbe61cf AM |
13687 | { |
13688 | /* Lie about opd entries. This case occurs | |
13689 | when building shared libraries and we | |
13690 | reference a function in another shared | |
3fad3c7c AM |
13691 | lib. The same thing happens for a weak |
13692 | definition in an application that's | |
13693 | overridden by a strong definition in a | |
13694 | shared lib. (I believe this is a generic | |
13695 | bug in binutils handling of weak syms.) | |
13696 | In these cases we won't use the opd | |
1e2f5b6e | 13697 | entry in this lib. */ |
b34976b6 | 13698 | unresolved_reloc = FALSE; |
afbe61cf | 13699 | } |
25f23106 AM |
13700 | if (!is_opd |
13701 | && r_type == R_PPC64_ADDR64 | |
13702 | && (h != NULL | |
13703 | ? h->elf.type == STT_GNU_IFUNC | |
13704 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
13705 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13706 | else | |
13707 | { | |
13708 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 13709 | |
25f23106 AM |
13710 | /* We need to relocate .opd contents for ld.so. |
13711 | Prelink also wants simple and consistent rules | |
13712 | for relocs. This make all RELATIVE relocs have | |
13713 | *r_offset equal to r_addend. */ | |
13714 | relocate = TRUE; | |
13715 | } | |
65f38f15 AM |
13716 | } |
13717 | else | |
13718 | { | |
13719 | long indx = 0; | |
13720 | ||
25f23106 AM |
13721 | if (h != NULL |
13722 | ? h->elf.type == STT_GNU_IFUNC | |
13723 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13724 | { | |
25f53a85 | 13725 | info->callbacks->einfo |
bc30df16 AM |
13726 | (_("%P: %H: %s for indirect " |
13727 | "function `%T' unsupported\n"), | |
25f53a85 | 13728 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
13729 | ppc64_elf_howto_table[r_type]->name, |
13730 | sym_name); | |
13731 | ret = FALSE; | |
13732 | } | |
cf35638d | 13733 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
13734 | ; |
13735 | else if (sec == NULL || sec->owner == NULL) | |
13736 | { | |
13737 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 13738 | return FALSE; |
65f38f15 AM |
13739 | } |
13740 | else | |
13741 | { | |
13742 | asection *osec; | |
13743 | ||
13744 | osec = sec->output_section; | |
13745 | indx = elf_section_data (osec)->dynindx; | |
13746 | ||
74541ad4 AM |
13747 | if (indx == 0) |
13748 | { | |
13749 | if ((osec->flags & SEC_READONLY) == 0 | |
13750 | && htab->elf.data_index_section != NULL) | |
13751 | osec = htab->elf.data_index_section; | |
13752 | else | |
13753 | osec = htab->elf.text_index_section; | |
13754 | indx = elf_section_data (osec)->dynindx; | |
13755 | } | |
13756 | BFD_ASSERT (indx != 0); | |
13757 | ||
65f38f15 AM |
13758 | /* We are turning this relocation into one |
13759 | against a section symbol, so subtract out | |
13760 | the output section's address but not the | |
13761 | offset of the input section in the output | |
13762 | section. */ | |
13763 | outrel.r_addend -= osec->vma; | |
13764 | } | |
13765 | ||
13766 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
13767 | } | |
13768 | } | |
13769 | ||
13770 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
13771 | if (h != NULL |
13772 | ? h->elf.type == STT_GNU_IFUNC | |
13773 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
25f23106 | 13774 | sreloc = htab->reliplt; |
65f38f15 AM |
13775 | if (sreloc == NULL) |
13776 | abort (); | |
13777 | ||
dfbb6ac9 AM |
13778 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
13779 | >= sreloc->size) | |
13780 | abort (); | |
947216bf AM |
13781 | loc = sreloc->contents; |
13782 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
13783 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
13784 | ||
13785 | /* If this reloc is against an external symbol, it will | |
13786 | be computed at runtime, so there's no need to do | |
81407a69 AM |
13787 | anything now. However, for the sake of prelink ensure |
13788 | that the section contents are a known value. */ | |
65f38f15 | 13789 | if (! relocate) |
81407a69 AM |
13790 | { |
13791 | unresolved_reloc = FALSE; | |
13792 | /* The value chosen here is quite arbitrary as ld.so | |
13793 | ignores section contents except for the special | |
13794 | case of .opd where the contents might be accessed | |
13795 | before relocation. Choose zero, as that won't | |
13796 | cause reloc overflow. */ | |
13797 | relocation = 0; | |
13798 | addend = 0; | |
13799 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
13800 | to improve backward compatibility with older | |
13801 | versions of ld. */ | |
13802 | if (r_type == R_PPC64_ADDR64) | |
13803 | addend = outrel.r_addend; | |
13804 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 13805 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
13806 | addend = (input_section->output_section->vma |
13807 | + input_section->output_offset | |
13808 | + rel->r_offset); | |
81407a69 | 13809 | } |
65f38f15 | 13810 | } |
5bd4f169 AM |
13811 | break; |
13812 | ||
65f38f15 AM |
13813 | case R_PPC64_COPY: |
13814 | case R_PPC64_GLOB_DAT: | |
13815 | case R_PPC64_JMP_SLOT: | |
25f23106 | 13816 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
13817 | case R_PPC64_RELATIVE: |
13818 | /* We shouldn't ever see these dynamic relocs in relocatable | |
13819 | files. */ | |
ae9a127f | 13820 | /* Fall through. */ |
65f38f15 AM |
13821 | |
13822 | case R_PPC64_PLTGOT16: | |
13823 | case R_PPC64_PLTGOT16_DS: | |
13824 | case R_PPC64_PLTGOT16_HA: | |
13825 | case R_PPC64_PLTGOT16_HI: | |
13826 | case R_PPC64_PLTGOT16_LO: | |
13827 | case R_PPC64_PLTGOT16_LO_DS: | |
13828 | case R_PPC64_PLTREL32: | |
13829 | case R_PPC64_PLTREL64: | |
13830 | /* These ones haven't been implemented yet. */ | |
13831 | ||
25f53a85 | 13832 | info->callbacks->einfo |
bc30df16 | 13833 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 13834 | input_bfd, |
4ce794b7 | 13835 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
13836 | |
13837 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 13838 | ret = FALSE; |
5bd4f169 | 13839 | continue; |
65f38f15 | 13840 | } |
5bd4f169 | 13841 | |
67f0cbdb AM |
13842 | /* Multi-instruction sequences that access the TOC can be |
13843 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
13844 | to nop; addi rb,r2,x; */ | |
13845 | switch (r_type) | |
13846 | { | |
13847 | default: | |
13848 | break; | |
13849 | ||
13850 | case R_PPC64_GOT_TLSLD16_HI: | |
13851 | case R_PPC64_GOT_TLSGD16_HI: | |
13852 | case R_PPC64_GOT_TPREL16_HI: | |
13853 | case R_PPC64_GOT_DTPREL16_HI: | |
13854 | case R_PPC64_GOT16_HI: | |
13855 | case R_PPC64_TOC16_HI: | |
13856 | /* These relocs would only be useful if building up an | |
13857 | offset to later add to r2, perhaps in an indexed | |
13858 | addressing mode instruction. Don't try to optimize. | |
13859 | Unfortunately, the possibility of someone building up an | |
13860 | offset like this or even with the HA relocs, means that | |
13861 | we need to check the high insn when optimizing the low | |
13862 | insn. */ | |
13863 | break; | |
13864 | ||
13865 | case R_PPC64_GOT_TLSLD16_HA: | |
13866 | case R_PPC64_GOT_TLSGD16_HA: | |
13867 | case R_PPC64_GOT_TPREL16_HA: | |
13868 | case R_PPC64_GOT_DTPREL16_HA: | |
13869 | case R_PPC64_GOT16_HA: | |
13870 | case R_PPC64_TOC16_HA: | |
98528052 | 13871 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 13872 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
13873 | { |
13874 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13875 | bfd_put_32 (input_bfd, NOP, p); | |
13876 | } | |
67f0cbdb AM |
13877 | break; |
13878 | ||
13879 | case R_PPC64_GOT_TLSLD16_LO: | |
13880 | case R_PPC64_GOT_TLSGD16_LO: | |
13881 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13882 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13883 | case R_PPC64_GOT16_LO: | |
13884 | case R_PPC64_GOT16_LO_DS: | |
13885 | case R_PPC64_TOC16_LO: | |
13886 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 13887 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 13888 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
13889 | { |
13890 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13891 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
13892 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
13893 | { | |
13894 | /* Transform addic to addi when we change reg. */ | |
13895 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
13896 | insn |= (14u << 26) | (2 << 16); | |
13897 | } | |
13898 | else | |
67f0cbdb | 13899 | { |
98528052 AM |
13900 | insn &= ~(0x1f << 16); |
13901 | insn |= 2 << 16; | |
67f0cbdb | 13902 | } |
560c8763 | 13903 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
13904 | } |
13905 | break; | |
13906 | } | |
13907 | ||
65f38f15 AM |
13908 | /* Do any further special processing. */ |
13909 | switch (r_type) | |
13910 | { | |
13911 | default: | |
13912 | break; | |
13913 | ||
13914 | case R_PPC64_ADDR16_HA: | |
25f23106 | 13915 | case R_PPC64_REL16_HA: |
65f38f15 AM |
13916 | case R_PPC64_ADDR16_HIGHERA: |
13917 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
13918 | case R_PPC64_TOC16_HA: |
13919 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
13920 | case R_PPC64_TPREL16_HA: |
13921 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
13922 | case R_PPC64_TPREL16_HIGHER: |
13923 | case R_PPC64_TPREL16_HIGHERA: | |
13924 | case R_PPC64_TPREL16_HIGHEST: | |
13925 | case R_PPC64_TPREL16_HIGHESTA: | |
13926 | case R_PPC64_DTPREL16_HIGHER: | |
13927 | case R_PPC64_DTPREL16_HIGHERA: | |
13928 | case R_PPC64_DTPREL16_HIGHEST: | |
13929 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
13930 | /* It's just possible that this symbol is a weak symbol |
13931 | that's not actually defined anywhere. In that case, | |
13932 | 'sec' would be NULL, and we should leave the symbol | |
13933 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
13934 | if (sec == NULL) |
13935 | break; | |
13936 | /* Fall thru */ | |
13937 | ||
13938 | case R_PPC64_GOT16_HA: | |
13939 | case R_PPC64_PLTGOT16_HA: | |
13940 | case R_PPC64_PLT16_HA: | |
13941 | case R_PPC64_GOT_TLSGD16_HA: | |
13942 | case R_PPC64_GOT_TLSLD16_HA: | |
13943 | case R_PPC64_GOT_TPREL16_HA: | |
13944 | case R_PPC64_GOT_DTPREL16_HA: | |
13945 | /* Add 0x10000 if sign bit in 0:15 is set. | |
13946 | Bits 0:15 are not used. */ | |
13947 | addend += 0x8000; | |
65f38f15 AM |
13948 | break; |
13949 | ||
13950 | case R_PPC64_ADDR16_DS: | |
13951 | case R_PPC64_ADDR16_LO_DS: | |
13952 | case R_PPC64_GOT16_DS: | |
13953 | case R_PPC64_GOT16_LO_DS: | |
13954 | case R_PPC64_PLT16_LO_DS: | |
13955 | case R_PPC64_SECTOFF_DS: | |
13956 | case R_PPC64_SECTOFF_LO_DS: | |
13957 | case R_PPC64_TOC16_DS: | |
13958 | case R_PPC64_TOC16_LO_DS: | |
13959 | case R_PPC64_PLTGOT16_DS: | |
13960 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
13961 | case R_PPC64_GOT_TPREL16_DS: |
13962 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13963 | case R_PPC64_GOT_DTPREL16_DS: | |
13964 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13965 | case R_PPC64_TPREL16_DS: | |
13966 | case R_PPC64_TPREL16_LO_DS: | |
13967 | case R_PPC64_DTPREL16_DS: | |
13968 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
13969 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
13970 | mask = 3; | |
13971 | /* If this reloc is against an lq insn, then the value must be | |
13972 | a multiple of 16. This is somewhat of a hack, but the | |
13973 | "correct" way to do this by defining _DQ forms of all the | |
13974 | _DS relocs bloats all reloc switches in this file. It | |
13975 | doesn't seem to make much sense to use any of these relocs | |
13976 | in data, so testing the insn should be safe. */ | |
494dac0c | 13977 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
13978 | mask = 15; |
13979 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 13980 | { |
25f53a85 | 13981 | info->callbacks->einfo |
8de848d8 | 13982 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 13983 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 13984 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 13985 | mask + 1); |
65f38f15 | 13986 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13987 | ret = FALSE; |
65f38f15 AM |
13988 | continue; |
13989 | } | |
13990 | break; | |
5bd4f169 AM |
13991 | } |
13992 | ||
239e1f3a AM |
13993 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
13994 | because such sections are not SEC_ALLOC and thus ld.so will | |
13995 | not process them. */ | |
65f38f15 | 13996 | if (unresolved_reloc |
239e1f3a | 13997 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
13998 | && h->elf.def_dynamic) |
13999 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14000 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14001 | { |
25f53a85 | 14002 | info->callbacks->einfo |
bc30df16 | 14003 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14004 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 14005 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 14006 | h->elf.root.root.string); |
b34976b6 | 14007 | ret = FALSE; |
9c07fe7c | 14008 | } |
5bd4f169 | 14009 | |
65f38f15 | 14010 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
14011 | input_bfd, |
14012 | input_section, | |
14013 | contents, | |
411e1bfb | 14014 | rel->r_offset, |
5bd4f169 AM |
14015 | relocation, |
14016 | addend); | |
14017 | ||
ef60b7ff | 14018 | if (r != bfd_reloc_ok) |
5bd4f169 | 14019 | { |
bc30df16 AM |
14020 | char *more_info = NULL; |
14021 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
14022 | ||
14023 | if (reloc_dest != DEST_NORMAL) | |
14024 | { | |
14025 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14026 | if (more_info != NULL) | |
14027 | { | |
14028 | strcpy (more_info, reloc_name); | |
14029 | strcat (more_info, (reloc_dest == DEST_OPD | |
14030 | ? " (OPD)" : " (stub)")); | |
14031 | reloc_name = more_info; | |
14032 | } | |
14033 | } | |
14034 | ||
cd27b276 | 14035 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14036 | { |
cd27b276 AM |
14037 | if (warned) |
14038 | continue; | |
14039 | if (h != NULL | |
039b3fef | 14040 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 14041 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
14042 | { |
14043 | /* Assume this is a call protected by other code that | |
14044 | detects the symbol is undefined. If this is the case, | |
14045 | we can safely ignore the overflow. If not, the | |
14046 | program is hosed anyway, and a little warning isn't | |
14047 | going to help. */ | |
14048 | ||
14049 | continue; | |
14050 | } | |
14051 | ||
ef60b7ff | 14052 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14053 | (info, &h->elf.root, sym_name, |
14054 | reloc_name, orig_rel.r_addend, | |
14055 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14056 | return FALSE; |
ef60b7ff AM |
14057 | } |
14058 | else | |
14059 | { | |
25f53a85 | 14060 | info->callbacks->einfo |
bc30df16 | 14061 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14062 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14063 | reloc_name, sym_name, (int) r); |
b34976b6 | 14064 | ret = FALSE; |
ef60b7ff | 14065 | } |
bc30df16 AM |
14066 | if (more_info != NULL) |
14067 | free (more_info); | |
5bd4f169 | 14068 | } |
5bd4f169 AM |
14069 | } |
14070 | ||
645ea6a9 AM |
14071 | /* If we're emitting relocations, then shortly after this function |
14072 | returns, reloc offsets and addends for this section will be | |
14073 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14074 | file rather than the input. Save a copy of the relocs for |
14075 | opd_entry_value. */ | |
4cc603a5 | 14076 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14077 | { |
14078 | bfd_size_type amt; | |
14079 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14080 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14081 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14082 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14083 | if (rel == NULL) |
14084 | return FALSE; | |
14085 | memcpy (rel, relocs, amt); | |
14086 | } | |
5bd4f169 AM |
14087 | return ret; |
14088 | } | |
14089 | ||
754021d0 AM |
14090 | /* Adjust the value of any local symbols in opd sections. */ |
14091 | ||
6e0b88f1 | 14092 | static int |
754021d0 AM |
14093 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14094 | const char *name ATTRIBUTE_UNUSED, | |
14095 | Elf_Internal_Sym *elfsym, | |
14096 | asection *input_sec, | |
14097 | struct elf_link_hash_entry *h) | |
14098 | { | |
74f0fb50 AM |
14099 | struct _opd_sec_data *opd; |
14100 | long adjust; | |
754021d0 AM |
14101 | bfd_vma value; |
14102 | ||
4025353c | 14103 | if (h != NULL) |
6e0b88f1 | 14104 | return 1; |
4025353c | 14105 | |
74f0fb50 AM |
14106 | opd = get_opd_info (input_sec); |
14107 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14108 | return 1; |
754021d0 AM |
14109 | |
14110 | value = elfsym->st_value - input_sec->output_offset; | |
14111 | if (!info->relocatable) | |
14112 | value -= input_sec->output_section->vma; | |
14113 | ||
74f0fb50 | 14114 | adjust = opd->adjust[value / 8]; |
4025353c | 14115 | if (adjust == -1) |
6e0b88f1 AM |
14116 | return 2; |
14117 | ||
14118 | elfsym->st_value += adjust; | |
14119 | return 1; | |
754021d0 AM |
14120 | } |
14121 | ||
5bd4f169 AM |
14122 | /* Finish up dynamic symbol handling. We set the contents of various |
14123 | dynamic sections here. */ | |
14124 | ||
b34976b6 | 14125 | static bfd_boolean |
4ce794b7 AM |
14126 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14127 | struct bfd_link_info *info, | |
14128 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14129 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14130 | { |
65f38f15 | 14131 | struct ppc_link_hash_table *htab; |
8387904d AM |
14132 | struct plt_entry *ent; |
14133 | Elf_Internal_Rela rela; | |
14134 | bfd_byte *loc; | |
5bd4f169 | 14135 | |
65f38f15 | 14136 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14137 | if (htab == NULL) |
14138 | return FALSE; | |
5bd4f169 | 14139 | |
8387904d AM |
14140 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14141 | if (ent->plt.offset != (bfd_vma) -1) | |
14142 | { | |
14143 | /* This symbol has an entry in the procedure linkage | |
14144 | table. Set it up. */ | |
e054468f AM |
14145 | if (!htab->elf.dynamic_sections_created |
14146 | || h->dynindx == -1) | |
14147 | { | |
14148 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14149 | && h->def_regular | |
14150 | && (h->root.type == bfd_link_hash_defined | |
14151 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
14152 | rela.r_offset = (htab->iplt->output_section->vma |
14153 | + htab->iplt->output_offset | |
14154 | + ent->plt.offset); | |
14155 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
14156 | rela.r_addend = (h->root.u.def.value |
14157 | + h->root.u.def.section->output_offset | |
14158 | + h->root.u.def.section->output_section->vma | |
14159 | + ent->addend); | |
25f23106 AM |
14160 | loc = (htab->reliplt->contents |
14161 | + (htab->reliplt->reloc_count++ | |
14162 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
14163 | } |
14164 | else | |
14165 | { | |
25f23106 AM |
14166 | rela.r_offset = (htab->plt->output_section->vma |
14167 | + htab->plt->output_offset | |
14168 | + ent->plt.offset); | |
e054468f AM |
14169 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14170 | rela.r_addend = ent->addend; | |
25f23106 AM |
14171 | loc = (htab->relplt->contents |
14172 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
14173 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 14174 | } |
8387904d AM |
14175 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
14176 | } | |
5bd4f169 | 14177 | |
f5385ebf | 14178 | if (h->needs_copy) |
5bd4f169 | 14179 | { |
65f38f15 | 14180 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14181 | |
65f38f15 AM |
14182 | if (h->dynindx == -1 |
14183 | || (h->root.type != bfd_link_hash_defined | |
14184 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14185 | || htab->relbss == NULL) |
65f38f15 | 14186 | abort (); |
5bd4f169 AM |
14187 | |
14188 | rela.r_offset = (h->root.u.def.value | |
14189 | + h->root.u.def.section->output_section->vma | |
14190 | + h->root.u.def.section->output_offset); | |
14191 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14192 | rela.r_addend = 0; | |
4ce794b7 AM |
14193 | loc = htab->relbss->contents; |
14194 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14195 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14196 | } |
14197 | ||
b34976b6 | 14198 | return TRUE; |
5bd4f169 AM |
14199 | } |
14200 | ||
65f38f15 AM |
14201 | /* Used to decide how to sort relocs in an optimal manner for the |
14202 | dynamic linker, before writing them out. */ | |
14203 | ||
14204 | static enum elf_reloc_type_class | |
7e612e98 AM |
14205 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14206 | const asection *rel_sec, | |
14207 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14208 | { |
04c9666a | 14209 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14210 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14211 | ||
14212 | if (rel_sec == htab->reliplt) | |
14213 | return reloc_class_ifunc; | |
a33d1f77 | 14214 | |
4ce794b7 | 14215 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14216 | switch (r_type) |
65f38f15 AM |
14217 | { |
14218 | case R_PPC64_RELATIVE: | |
14219 | return reloc_class_relative; | |
14220 | case R_PPC64_JMP_SLOT: | |
14221 | return reloc_class_plt; | |
14222 | case R_PPC64_COPY: | |
14223 | return reloc_class_copy; | |
14224 | default: | |
14225 | return reloc_class_normal; | |
14226 | } | |
14227 | } | |
14228 | ||
5bd4f169 AM |
14229 | /* Finish up the dynamic sections. */ |
14230 | ||
b34976b6 | 14231 | static bfd_boolean |
4ce794b7 AM |
14232 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14233 | struct bfd_link_info *info) | |
5bd4f169 | 14234 | { |
65f38f15 AM |
14235 | struct ppc_link_hash_table *htab; |
14236 | bfd *dynobj; | |
5bd4f169 | 14237 | asection *sdyn; |
5bd4f169 | 14238 | |
65f38f15 | 14239 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14240 | if (htab == NULL) |
14241 | return FALSE; | |
14242 | ||
65f38f15 | 14243 | dynobj = htab->elf.dynobj; |
3d4d4302 | 14244 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 14245 | |
65f38f15 | 14246 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 14247 | { |
5bd4f169 AM |
14248 | Elf64_External_Dyn *dyncon, *dynconend; |
14249 | ||
4ce794b7 | 14250 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 14251 | abort (); |
5bd4f169 AM |
14252 | |
14253 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 14254 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
14255 | for (; dyncon < dynconend; dyncon++) |
14256 | { | |
14257 | Elf_Internal_Dyn dyn; | |
19397422 | 14258 | asection *s; |
5bd4f169 AM |
14259 | |
14260 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
14261 | ||
14262 | switch (dyn.d_tag) | |
14263 | { | |
65f38f15 AM |
14264 | default: |
14265 | continue; | |
5bd4f169 | 14266 | |
5d1634d7 | 14267 | case DT_PPC64_GLINK: |
4ce794b7 | 14268 | s = htab->glink; |
6348e046 | 14269 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
14270 | /* We stupidly defined DT_PPC64_GLINK to be the start |
14271 | of glink rather than the first entry point, which is | |
14272 | what ld.so needs, and now have a bigger stub to | |
14273 | support automatic multiple TOCs. */ | |
14274 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
14275 | break; |
14276 | ||
19397422 AM |
14277 | case DT_PPC64_OPD: |
14278 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14279 | if (s == NULL) |
14280 | continue; | |
14281 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
14282 | break; |
14283 | ||
14284 | case DT_PPC64_OPDSZ: | |
14285 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14286 | if (s == NULL) |
14287 | continue; | |
eea6121a | 14288 | dyn.d_un.d_val = s->size; |
19397422 AM |
14289 | break; |
14290 | ||
65f38f15 | 14291 | case DT_PLTGOT: |
4ce794b7 | 14292 | s = htab->plt; |
6348e046 | 14293 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
14294 | break; |
14295 | ||
14296 | case DT_JMPREL: | |
4ce794b7 | 14297 | s = htab->relplt; |
6348e046 | 14298 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 14299 | break; |
5bd4f169 | 14300 | |
65f38f15 | 14301 | case DT_PLTRELSZ: |
eea6121a | 14302 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
14303 | break; |
14304 | ||
14305 | case DT_RELASZ: | |
14306 | /* Don't count procedure linkage table relocs in the | |
14307 | overall reloc count. */ | |
4ce794b7 | 14308 | s = htab->relplt; |
6348e046 AM |
14309 | if (s == NULL) |
14310 | continue; | |
eea6121a | 14311 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
14312 | break; |
14313 | ||
14314 | case DT_RELA: | |
14315 | /* We may not be using the standard ELF linker script. | |
14316 | If .rela.plt is the first .rela section, we adjust | |
14317 | DT_RELA to not include it. */ | |
4ce794b7 | 14318 | s = htab->relplt; |
6348e046 AM |
14319 | if (s == NULL) |
14320 | continue; | |
14321 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
14322 | continue; | |
eea6121a | 14323 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 14324 | break; |
5bd4f169 | 14325 | } |
5bd4f169 | 14326 | |
65f38f15 | 14327 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 14328 | } |
5bd4f169 AM |
14329 | } |
14330 | ||
eea6121a | 14331 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
14332 | { |
14333 | /* Fill in the first entry in the global offset table. | |
14334 | We use it to hold the link-time TOCbase. */ | |
14335 | bfd_put_64 (output_bfd, | |
60ee0d4a | 14336 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 14337 | htab->got->contents); |
5d1634d7 AM |
14338 | |
14339 | /* Set .got entry size. */ | |
4ce794b7 | 14340 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
14341 | } |
14342 | ||
eea6121a | 14343 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
14344 | { |
14345 | /* Set .plt entry size. */ | |
4ce794b7 | 14346 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
14347 | = PLT_ENTRY_SIZE; |
14348 | } | |
14349 | ||
84f5d08e AM |
14350 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
14351 | brlt ourselves if emitrelocations. */ | |
14352 | if (htab->brlt != NULL | |
14353 | && htab->brlt->reloc_count != 0 | |
14354 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14355 | htab->brlt, | |
d4730f92 | 14356 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
14357 | elf_section_data (htab->brlt)->relocs, |
14358 | NULL)) | |
14359 | return FALSE; | |
14360 | ||
176a0d42 AM |
14361 | if (htab->glink != NULL |
14362 | && htab->glink->reloc_count != 0 | |
14363 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14364 | htab->glink, | |
d4730f92 | 14365 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
14366 | elf_section_data (htab->glink)->relocs, |
14367 | NULL)) | |
14368 | return FALSE; | |
14369 | ||
58d180e8 AM |
14370 | |
14371 | if (htab->glink_eh_frame != NULL | |
dbaa2011 | 14372 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
58d180e8 AM |
14373 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
14374 | htab->glink_eh_frame, | |
14375 | htab->glink_eh_frame->contents)) | |
14376 | return FALSE; | |
14377 | ||
e717da7e | 14378 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
14379 | since we didn't add them to DYNOBJ. We know dynobj is the first |
14380 | bfd. */ | |
e717da7e AM |
14381 | while ((dynobj = dynobj->link_next) != NULL) |
14382 | { | |
14383 | asection *s; | |
7b53ace3 | 14384 | |
0c8d6e5c | 14385 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
14386 | continue; |
14387 | ||
e717da7e AM |
14388 | s = ppc64_elf_tdata (dynobj)->got; |
14389 | if (s != NULL | |
eea6121a | 14390 | && s->size != 0 |
e717da7e AM |
14391 | && s->output_section != bfd_abs_section_ptr |
14392 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14393 | s->contents, s->output_offset, | |
eea6121a | 14394 | s->size)) |
e717da7e AM |
14395 | return FALSE; |
14396 | s = ppc64_elf_tdata (dynobj)->relgot; | |
14397 | if (s != NULL | |
eea6121a | 14398 | && s->size != 0 |
e717da7e AM |
14399 | && s->output_section != bfd_abs_section_ptr |
14400 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14401 | s->contents, s->output_offset, | |
eea6121a | 14402 | s->size)) |
e717da7e AM |
14403 | return FALSE; |
14404 | } | |
f6c52c13 | 14405 | |
b34976b6 | 14406 | return TRUE; |
5bd4f169 AM |
14407 | } |
14408 | ||
5bd4f169 | 14409 | #include "elf64-target.h" |
7b8e7dad AM |
14410 | |
14411 | /* FreeBSD support */ | |
14412 | ||
14413 | #undef TARGET_LITTLE_SYM | |
14414 | #undef TARGET_LITTLE_NAME | |
14415 | ||
14416 | #undef TARGET_BIG_SYM | |
14417 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
14418 | #undef TARGET_BIG_NAME | |
14419 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
14420 | ||
14421 | #undef ELF_OSABI | |
14422 | #define ELF_OSABI ELFOSABI_FREEBSD | |
14423 | ||
14424 | #undef elf64_bed | |
14425 | #define elf64_bed elf64_powerpc_fbsd_bed | |
14426 | ||
14427 | #include "elf64-target.h" | |
14428 |