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 |
ee67d69a AM |
84 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
85 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
86 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
87 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
88 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 89 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 90 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
91 | |
92 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
93 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
94 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 95 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
96 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
97 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 98 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 99 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
e5034e59 | 100 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 101 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 102 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 103 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 104 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
105 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
106 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
107 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
108 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 109 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
110 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
111 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 112 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 113 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 114 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
115 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
116 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
117 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
118 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 119 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 120 | #define elf_backend_special_sections ppc64_elf_special_sections |
e054468f | 121 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
6911b7dc | 122 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 123 | |
5bd4f169 AM |
124 | /* The name of the dynamic interpreter. This is put in the .interp |
125 | section. */ | |
126 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
127 | ||
128 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 129 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
130 | |
131 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 132 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 133 | |
a078d95a AM |
134 | /* Offsets to some stack save slots. */ |
135 | #define STK_LR 16 | |
136 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
137 | /* This one is dodgy. ABIv2 does not have a linker word, so use the | |
138 | CR save slot. Used only by optimised __tls_get_addr call stub, | |
139 | relying on __tls_get_addr_opt not saving CR.. */ | |
140 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
141 | ||
5bd4f169 | 142 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb AM |
143 | #define TOC_BASE_OFF 0x8000 |
144 | ||
145 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
146 | #define TP_OFFSET 0x7000 | |
147 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 148 | |
ad8e1ba5 AM |
149 | /* .plt call stub instructions. The normal stub is like this, but |
150 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 151 | insert an addi to adjust r11. */ |
a078d95a | 152 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
153 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
154 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
155 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
156 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
157 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
158 | #define BCTR 0x4e800420 /* bctr */ |
159 | ||
71a39c98 | 160 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
161 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
162 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
163 | ||
71a39c98 AM |
164 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
165 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
166 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
167 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
168 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
169 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
170 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
171 | ||
71a39c98 | 172 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
173 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
174 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
175 | ||
a078d95a | 176 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
ad8e1ba5 | 177 | |
a345bc8d AM |
178 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
179 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
180 | ||
ee4bf8d2 | 181 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 182 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
183 | /* 0: */ |
184 | /* .quad plt0-1f */ | |
185 | /* __glink: */ | |
186 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
187 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
188 | /* 1: */ | |
189 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 190 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 191 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
192 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
193 | /* ld %12,0(%11) */ | |
194 | /* ld %2,8(%11) */ | |
195 | /* mtctr %12 */ | |
196 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 197 | /* bctr */ |
b9e5796b AM |
198 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
199 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
200 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
201 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
202 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
203 | |
204 | /* Pad with this. */ | |
205 | #define NOP 0x60000000 | |
206 | ||
721956f4 AM |
207 | /* Some other nops. */ |
208 | #define CROR_151515 0x4def7b82 | |
209 | #define CROR_313131 0x4ffffb82 | |
210 | ||
cedb70c5 | 211 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
212 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
213 | #define B_DOT 0x48000000 /* b . */ | |
214 | ||
215 | /* After that, we need two instructions to load the index, followed by | |
216 | a branch. */ | |
217 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 218 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 219 | |
deb0e272 AM |
220 | /* Instructions used by the save and restore reg functions. */ |
221 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
222 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
223 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
224 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
225 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
226 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
227 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
228 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
229 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
230 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
231 | #define BLR 0x4e800020 /* blr */ |
232 | ||
41bd81ab AM |
233 | /* Since .opd is an array of descriptors and each entry will end up |
234 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
235 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 236 | relocate .opd without reloc entries. */ |
41bd81ab AM |
237 | #ifndef NO_OPD_RELOCS |
238 | #define NO_OPD_RELOCS 0 | |
239 | #endif | |
5bd4f169 | 240 | \f |
f5e87a1d | 241 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 242 | |
5bd4f169 | 243 | /* Relocation HOWTO's. */ |
04c9666a | 244 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
245 | |
246 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
247 | /* This reloc does nothing. */ | |
248 | HOWTO (R_PPC64_NONE, /* type */ | |
249 | 0, /* rightshift */ | |
411e1bfb AM |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
251 | 32, /* bitsize */ | |
b34976b6 | 252 | FALSE, /* pc_relative */ |
5bd4f169 | 253 | 0, /* bitpos */ |
f5e87a1d | 254 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
255 | bfd_elf_generic_reloc, /* special_function */ |
256 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 257 | FALSE, /* partial_inplace */ |
d006db6c | 258 | 0, /* src_mask */ |
5bd4f169 | 259 | 0, /* dst_mask */ |
b34976b6 | 260 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
261 | |
262 | /* A standard 32 bit relocation. */ | |
263 | HOWTO (R_PPC64_ADDR32, /* type */ | |
264 | 0, /* rightshift */ | |
265 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 32, /* bitsize */ | |
b34976b6 | 267 | FALSE, /* pc_relative */ |
5bd4f169 AM |
268 | 0, /* bitpos */ |
269 | complain_overflow_bitfield, /* complain_on_overflow */ | |
270 | bfd_elf_generic_reloc, /* special_function */ | |
271 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 272 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
273 | 0, /* src_mask */ |
274 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 275 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
276 | |
277 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
278 | FIXME: we don't check that, we just clear them. */ | |
279 | HOWTO (R_PPC64_ADDR24, /* type */ | |
280 | 0, /* rightshift */ | |
281 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
282 | 26, /* bitsize */ | |
b34976b6 | 283 | FALSE, /* pc_relative */ |
5bd4f169 AM |
284 | 0, /* bitpos */ |
285 | complain_overflow_bitfield, /* complain_on_overflow */ | |
286 | bfd_elf_generic_reloc, /* special_function */ | |
287 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 288 | FALSE, /* partial_inplace */ |
d006db6c | 289 | 0, /* src_mask */ |
f5e87a1d | 290 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 291 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
292 | |
293 | /* A standard 16 bit relocation. */ | |
294 | HOWTO (R_PPC64_ADDR16, /* type */ | |
295 | 0, /* rightshift */ | |
296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
297 | 16, /* bitsize */ | |
b34976b6 | 298 | FALSE, /* pc_relative */ |
5bd4f169 AM |
299 | 0, /* bitpos */ |
300 | complain_overflow_bitfield, /* complain_on_overflow */ | |
301 | bfd_elf_generic_reloc, /* special_function */ | |
302 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 303 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
304 | 0, /* src_mask */ |
305 | 0xffff, /* dst_mask */ | |
b34976b6 | 306 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
307 | |
308 | /* A 16 bit relocation without overflow. */ | |
309 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 16, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
5bd4f169 AM |
314 | 0, /* bitpos */ |
315 | complain_overflow_dont,/* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
319 | 0, /* src_mask */ |
320 | 0xffff, /* dst_mask */ | |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
322 | |
323 | /* Bits 16-31 of an address. */ | |
324 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
325 | 16, /* rightshift */ | |
326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
b34976b6 | 328 | FALSE, /* pc_relative */ |
5bd4f169 | 329 | 0, /* bitpos */ |
f9c6b907 | 330 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
331 | bfd_elf_generic_reloc, /* special_function */ |
332 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 333 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
334 | 0, /* src_mask */ |
335 | 0xffff, /* dst_mask */ | |
b34976b6 | 336 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
337 | |
338 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
339 | bits, treated as a signed number, is negative. */ | |
340 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
341 | 16, /* rightshift */ | |
342 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
343 | 16, /* bitsize */ | |
b34976b6 | 344 | FALSE, /* pc_relative */ |
5bd4f169 | 345 | 0, /* bitpos */ |
f9c6b907 | 346 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 347 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 348 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 349 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
350 | 0, /* src_mask */ |
351 | 0xffff, /* dst_mask */ | |
b34976b6 | 352 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
353 | |
354 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
355 | FIXME: we don't check that, we just clear them. */ | |
356 | HOWTO (R_PPC64_ADDR14, /* type */ | |
357 | 0, /* rightshift */ | |
358 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
359 | 16, /* bitsize */ | |
b34976b6 | 360 | FALSE, /* pc_relative */ |
5bd4f169 AM |
361 | 0, /* bitpos */ |
362 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 363 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 364 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 365 | FALSE, /* partial_inplace */ |
d006db6c | 366 | 0, /* src_mask */ |
f5e87a1d | 367 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 368 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
369 | |
370 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
371 | indicate that the branch is expected to be taken. The lower two | |
372 | bits must be zero. */ | |
373 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
374 | 0, /* rightshift */ | |
375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
376 | 16, /* bitsize */ | |
b34976b6 | 377 | FALSE, /* pc_relative */ |
5bd4f169 AM |
378 | 0, /* bitpos */ |
379 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 380 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 381 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 382 | FALSE, /* partial_inplace */ |
d006db6c | 383 | 0, /* src_mask */ |
f5e87a1d | 384 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 385 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
386 | |
387 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
388 | indicate that the branch is not expected to be taken. The lower | |
389 | two bits must be zero. */ | |
390 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
391 | 0, /* rightshift */ | |
392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 16, /* bitsize */ | |
b34976b6 | 394 | FALSE, /* pc_relative */ |
5bd4f169 AM |
395 | 0, /* bitpos */ |
396 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 397 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 398 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 399 | FALSE, /* partial_inplace */ |
d006db6c | 400 | 0, /* src_mask */ |
f5e87a1d | 401 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 402 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
403 | |
404 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
405 | HOWTO (R_PPC64_REL24, /* type */ | |
406 | 0, /* rightshift */ | |
407 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
408 | 26, /* bitsize */ | |
b34976b6 | 409 | TRUE, /* pc_relative */ |
5bd4f169 AM |
410 | 0, /* bitpos */ |
411 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 412 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 413 | "R_PPC64_REL24", /* name */ |
b34976b6 | 414 | FALSE, /* partial_inplace */ |
d006db6c | 415 | 0, /* src_mask */ |
f5e87a1d | 416 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 417 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
418 | |
419 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
420 | HOWTO (R_PPC64_REL14, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
b34976b6 | 424 | TRUE, /* pc_relative */ |
5bd4f169 AM |
425 | 0, /* bitpos */ |
426 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 427 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 428 | "R_PPC64_REL14", /* name */ |
b34976b6 | 429 | FALSE, /* partial_inplace */ |
d006db6c | 430 | 0, /* src_mask */ |
f5e87a1d | 431 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 432 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
433 | |
434 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
435 | the branch is expected to be taken. The lower two bits must be | |
436 | zero. */ | |
437 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
440 | 16, /* bitsize */ | |
b34976b6 | 441 | TRUE, /* pc_relative */ |
5bd4f169 AM |
442 | 0, /* bitpos */ |
443 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 444 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 445 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 446 | FALSE, /* partial_inplace */ |
d006db6c | 447 | 0, /* src_mask */ |
f5e87a1d | 448 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 449 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
450 | |
451 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
452 | the branch is not expected to be taken. The lower two bits must | |
453 | be zero. */ | |
454 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
455 | 0, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 16, /* bitsize */ | |
b34976b6 | 458 | TRUE, /* pc_relative */ |
5bd4f169 AM |
459 | 0, /* bitpos */ |
460 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 461 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 462 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 463 | FALSE, /* partial_inplace */ |
d006db6c | 464 | 0, /* src_mask */ |
f5e87a1d | 465 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 466 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
467 | |
468 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
469 | symbol. */ | |
470 | HOWTO (R_PPC64_GOT16, /* type */ | |
471 | 0, /* rightshift */ | |
472 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
473 | 16, /* bitsize */ | |
b34976b6 | 474 | FALSE, /* pc_relative */ |
5bd4f169 AM |
475 | 0, /* bitpos */ |
476 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 477 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 478 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 479 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
480 | 0, /* src_mask */ |
481 | 0xffff, /* dst_mask */ | |
b34976b6 | 482 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
483 | |
484 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
485 | the symbol. */ | |
486 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
487 | 0, /* rightshift */ | |
488 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
489 | 16, /* bitsize */ | |
b34976b6 | 490 | FALSE, /* pc_relative */ |
5bd4f169 AM |
491 | 0, /* bitpos */ |
492 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 493 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 494 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 495 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
496 | 0, /* src_mask */ |
497 | 0xffff, /* dst_mask */ | |
b34976b6 | 498 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
499 | |
500 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
501 | the symbol. */ | |
502 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
503 | 16, /* rightshift */ | |
504 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
505 | 16, /* bitsize */ | |
b34976b6 | 506 | FALSE, /* pc_relative */ |
5bd4f169 | 507 | 0, /* bitpos */ |
f9c6b907 | 508 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 509 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 510 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 511 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
512 | 0, /* src_mask */ |
513 | 0xffff, /* dst_mask */ | |
b34976b6 | 514 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
515 | |
516 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
517 | the symbol. */ | |
518 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
519 | 16, /* rightshift */ | |
520 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 16, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
5bd4f169 | 523 | 0, /* bitpos */ |
f9c6b907 | 524 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 525 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 526 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
528 | 0, /* src_mask */ |
529 | 0xffff, /* dst_mask */ | |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
531 | |
532 | /* This is used only by the dynamic linker. The symbol should exist | |
533 | both in the object being run and in some shared library. The | |
534 | dynamic linker copies the data addressed by the symbol from the | |
535 | shared library into the object, because the object being | |
536 | run has to have the data at some particular address. */ | |
537 | HOWTO (R_PPC64_COPY, /* type */ | |
538 | 0, /* rightshift */ | |
f5e87a1d AM |
539 | 0, /* this one is variable size */ |
540 | 0, /* bitsize */ | |
b34976b6 | 541 | FALSE, /* pc_relative */ |
5bd4f169 | 542 | 0, /* bitpos */ |
f5e87a1d AM |
543 | complain_overflow_dont, /* complain_on_overflow */ |
544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 545 | "R_PPC64_COPY", /* name */ |
b34976b6 | 546 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
547 | 0, /* src_mask */ |
548 | 0, /* dst_mask */ | |
b34976b6 | 549 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
550 | |
551 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
552 | entries. */ | |
553 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
554 | 0, /* rightshift */ | |
555 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
556 | 64, /* bitsize */ | |
b34976b6 | 557 | FALSE, /* pc_relative */ |
5bd4f169 AM |
558 | 0, /* bitpos */ |
559 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 560 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 561 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 562 | FALSE, /* partial_inplace */ |
5bd4f169 | 563 | 0, /* src_mask */ |
f5e87a1d | 564 | ONES (64), /* dst_mask */ |
b34976b6 | 565 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
566 | |
567 | /* Created by the link editor. Marks a procedure linkage table | |
568 | entry for a symbol. */ | |
569 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
570 | 0, /* rightshift */ | |
571 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
572 | 0, /* bitsize */ | |
b34976b6 | 573 | FALSE, /* pc_relative */ |
5bd4f169 AM |
574 | 0, /* bitpos */ |
575 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 576 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 577 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 578 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
579 | 0, /* src_mask */ |
580 | 0, /* dst_mask */ | |
b34976b6 | 581 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
582 | |
583 | /* Used only by the dynamic linker. When the object is run, this | |
584 | doubleword64 is set to the load address of the object, plus the | |
585 | addend. */ | |
586 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
587 | 0, /* rightshift */ | |
588 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
589 | 64, /* bitsize */ | |
b34976b6 | 590 | FALSE, /* pc_relative */ |
5bd4f169 AM |
591 | 0, /* bitpos */ |
592 | complain_overflow_dont, /* complain_on_overflow */ | |
593 | bfd_elf_generic_reloc, /* special_function */ | |
594 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 595 | FALSE, /* partial_inplace */ |
5bd4f169 | 596 | 0, /* src_mask */ |
f5e87a1d | 597 | ONES (64), /* dst_mask */ |
b34976b6 | 598 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
599 | |
600 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
601 | HOWTO (R_PPC64_UADDR32, /* type */ | |
602 | 0, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 32, /* bitsize */ | |
b34976b6 | 605 | FALSE, /* pc_relative */ |
5bd4f169 AM |
606 | 0, /* bitpos */ |
607 | complain_overflow_bitfield, /* complain_on_overflow */ | |
608 | bfd_elf_generic_reloc, /* special_function */ | |
609 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 610 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
611 | 0, /* src_mask */ |
612 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 613 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
614 | |
615 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
616 | HOWTO (R_PPC64_UADDR16, /* type */ | |
617 | 0, /* rightshift */ | |
618 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
619 | 16, /* bitsize */ | |
b34976b6 | 620 | FALSE, /* pc_relative */ |
5bd4f169 AM |
621 | 0, /* bitpos */ |
622 | complain_overflow_bitfield, /* complain_on_overflow */ | |
623 | bfd_elf_generic_reloc, /* special_function */ | |
624 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
626 | 0, /* src_mask */ |
627 | 0xffff, /* dst_mask */ | |
b34976b6 | 628 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
629 | |
630 | /* 32-bit PC relative. */ | |
631 | HOWTO (R_PPC64_REL32, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 32, /* bitsize */ | |
b34976b6 | 635 | TRUE, /* pc_relative */ |
5bd4f169 | 636 | 0, /* bitpos */ |
cedb70c5 | 637 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
638 | complain_overflow_signed, /* complain_on_overflow */ |
639 | bfd_elf_generic_reloc, /* special_function */ | |
640 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 641 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
642 | 0, /* src_mask */ |
643 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 644 | TRUE), /* pcrel_offset */ |
5bd4f169 | 645 | |
10ed1bba | 646 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
647 | HOWTO (R_PPC64_PLT32, /* type */ |
648 | 0, /* rightshift */ | |
649 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
650 | 32, /* bitsize */ | |
b34976b6 | 651 | FALSE, /* pc_relative */ |
5bd4f169 AM |
652 | 0, /* bitpos */ |
653 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 654 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 655 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 656 | FALSE, /* partial_inplace */ |
5bd4f169 | 657 | 0, /* src_mask */ |
f5e87a1d | 658 | 0xffffffff, /* dst_mask */ |
b34976b6 | 659 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
660 | |
661 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
662 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
663 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
664 | 0, /* rightshift */ | |
665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 32, /* bitsize */ | |
b34976b6 | 667 | TRUE, /* pc_relative */ |
5bd4f169 AM |
668 | 0, /* bitpos */ |
669 | complain_overflow_signed, /* complain_on_overflow */ | |
670 | bfd_elf_generic_reloc, /* special_function */ | |
671 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 672 | FALSE, /* partial_inplace */ |
5bd4f169 | 673 | 0, /* src_mask */ |
f5e87a1d | 674 | 0xffffffff, /* dst_mask */ |
b34976b6 | 675 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
676 | |
677 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
678 | the symbol. */ | |
679 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 16, /* bitsize */ | |
b34976b6 | 683 | FALSE, /* pc_relative */ |
5bd4f169 AM |
684 | 0, /* bitpos */ |
685 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 686 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 687 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 688 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
689 | 0, /* src_mask */ |
690 | 0xffff, /* dst_mask */ | |
b34976b6 | 691 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
692 | |
693 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
694 | the symbol. */ | |
695 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
696 | 16, /* rightshift */ | |
697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 16, /* bitsize */ | |
b34976b6 | 699 | FALSE, /* pc_relative */ |
5bd4f169 | 700 | 0, /* bitpos */ |
f9c6b907 | 701 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 702 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 703 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 704 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
705 | 0, /* src_mask */ |
706 | 0xffff, /* dst_mask */ | |
b34976b6 | 707 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
708 | |
709 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
710 | the symbol. */ | |
711 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
712 | 16, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
b34976b6 | 715 | FALSE, /* pc_relative */ |
5bd4f169 | 716 | 0, /* bitpos */ |
f9c6b907 | 717 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 718 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 719 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 720 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
721 | 0, /* src_mask */ |
722 | 0xffff, /* dst_mask */ | |
b34976b6 | 723 | FALSE), /* pcrel_offset */ |
5bd4f169 | 724 | |
c061c2d8 | 725 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
726 | HOWTO (R_PPC64_SECTOFF, /* type */ |
727 | 0, /* rightshift */ | |
c061c2d8 AM |
728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
729 | 16, /* bitsize */ | |
b34976b6 | 730 | FALSE, /* pc_relative */ |
5bd4f169 AM |
731 | 0, /* bitpos */ |
732 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 733 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 734 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 735 | FALSE, /* partial_inplace */ |
5bd4f169 | 736 | 0, /* src_mask */ |
c061c2d8 | 737 | 0xffff, /* dst_mask */ |
b34976b6 | 738 | FALSE), /* pcrel_offset */ |
5bd4f169 | 739 | |
c061c2d8 | 740 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
741 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
742 | 0, /* rightshift */ | |
743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
744 | 16, /* bitsize */ | |
b34976b6 | 745 | FALSE, /* pc_relative */ |
5bd4f169 AM |
746 | 0, /* bitpos */ |
747 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 748 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 749 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 750 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
751 | 0, /* src_mask */ |
752 | 0xffff, /* dst_mask */ | |
b34976b6 | 753 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
754 | |
755 | /* 16-bit upper half section relative relocation. */ | |
756 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
757 | 16, /* rightshift */ | |
758 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
759 | 16, /* bitsize */ | |
b34976b6 | 760 | FALSE, /* pc_relative */ |
5bd4f169 | 761 | 0, /* bitpos */ |
f9c6b907 | 762 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 763 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 764 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 765 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
766 | 0, /* src_mask */ |
767 | 0xffff, /* dst_mask */ | |
b34976b6 | 768 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
769 | |
770 | /* 16-bit upper half adjusted section relative relocation. */ | |
771 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
772 | 16, /* rightshift */ | |
773 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
774 | 16, /* bitsize */ | |
b34976b6 | 775 | FALSE, /* pc_relative */ |
5bd4f169 | 776 | 0, /* bitpos */ |
f9c6b907 | 777 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 778 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 779 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 780 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
781 | 0, /* src_mask */ |
782 | 0xffff, /* dst_mask */ | |
b34976b6 | 783 | FALSE), /* pcrel_offset */ |
5bd4f169 | 784 | |
04c9666a AM |
785 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
786 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
787 | 2, /* rightshift */ |
788 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
789 | 30, /* bitsize */ | |
b34976b6 | 790 | TRUE, /* pc_relative */ |
5bd4f169 AM |
791 | 0, /* bitpos */ |
792 | complain_overflow_dont, /* complain_on_overflow */ | |
793 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 794 | "R_PPC64_REL30", /* name */ |
b34976b6 | 795 | FALSE, /* partial_inplace */ |
d006db6c | 796 | 0, /* src_mask */ |
5bd4f169 | 797 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 798 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
799 | |
800 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
801 | ||
802 | /* A standard 64-bit relocation. */ | |
803 | HOWTO (R_PPC64_ADDR64, /* type */ | |
804 | 0, /* rightshift */ | |
805 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
806 | 64, /* bitsize */ | |
b34976b6 | 807 | FALSE, /* pc_relative */ |
5bd4f169 AM |
808 | 0, /* bitpos */ |
809 | complain_overflow_dont, /* complain_on_overflow */ | |
810 | bfd_elf_generic_reloc, /* special_function */ | |
811 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 812 | FALSE, /* partial_inplace */ |
5bd4f169 | 813 | 0, /* src_mask */ |
f5e87a1d | 814 | ONES (64), /* dst_mask */ |
b34976b6 | 815 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
816 | |
817 | /* The bits 32-47 of an address. */ | |
818 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
819 | 32, /* rightshift */ | |
820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 16, /* bitsize */ | |
b34976b6 | 822 | FALSE, /* pc_relative */ |
5bd4f169 AM |
823 | 0, /* bitpos */ |
824 | complain_overflow_dont, /* complain_on_overflow */ | |
825 | bfd_elf_generic_reloc, /* special_function */ | |
826 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 827 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
828 | 0, /* src_mask */ |
829 | 0xffff, /* dst_mask */ | |
b34976b6 | 830 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
831 | |
832 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
833 | 16 bits, treated as a signed number, is negative. */ | |
834 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
835 | 32, /* rightshift */ | |
836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
837 | 16, /* bitsize */ | |
b34976b6 | 838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
839 | 0, /* bitpos */ |
840 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 841 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 842 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 843 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
844 | 0, /* src_mask */ |
845 | 0xffff, /* dst_mask */ | |
b34976b6 | 846 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
847 | |
848 | /* The bits 48-63 of an address. */ | |
849 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
850 | 48, /* rightshift */ | |
851 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
852 | 16, /* bitsize */ | |
b34976b6 | 853 | FALSE, /* pc_relative */ |
5bd4f169 AM |
854 | 0, /* bitpos */ |
855 | complain_overflow_dont, /* complain_on_overflow */ | |
856 | bfd_elf_generic_reloc, /* special_function */ | |
857 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 858 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
859 | 0, /* src_mask */ |
860 | 0xffff, /* dst_mask */ | |
b34976b6 | 861 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
862 | |
863 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
864 | 16 bits, treated as a signed number, is negative. */ | |
865 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
866 | 48, /* rightshift */ | |
867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 16, /* bitsize */ | |
b34976b6 | 869 | FALSE, /* pc_relative */ |
5bd4f169 AM |
870 | 0, /* bitpos */ |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 872 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 873 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
875 | 0, /* src_mask */ |
876 | 0xffff, /* dst_mask */ | |
b34976b6 | 877 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
878 | |
879 | /* Like ADDR64, but may be unaligned. */ | |
880 | HOWTO (R_PPC64_UADDR64, /* type */ | |
881 | 0, /* rightshift */ | |
882 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
883 | 64, /* bitsize */ | |
b34976b6 | 884 | FALSE, /* pc_relative */ |
5bd4f169 AM |
885 | 0, /* bitpos */ |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
887 | bfd_elf_generic_reloc, /* special_function */ | |
888 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 889 | FALSE, /* partial_inplace */ |
5bd4f169 | 890 | 0, /* src_mask */ |
f5e87a1d | 891 | ONES (64), /* dst_mask */ |
b34976b6 | 892 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
893 | |
894 | /* 64-bit relative relocation. */ | |
895 | HOWTO (R_PPC64_REL64, /* type */ | |
896 | 0, /* rightshift */ | |
897 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
898 | 64, /* bitsize */ | |
b34976b6 | 899 | TRUE, /* pc_relative */ |
5bd4f169 AM |
900 | 0, /* bitpos */ |
901 | complain_overflow_dont, /* complain_on_overflow */ | |
902 | bfd_elf_generic_reloc, /* special_function */ | |
903 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 904 | FALSE, /* partial_inplace */ |
5bd4f169 | 905 | 0, /* src_mask */ |
f5e87a1d | 906 | ONES (64), /* dst_mask */ |
b34976b6 | 907 | TRUE), /* pcrel_offset */ |
5bd4f169 | 908 | |
cedb70c5 | 909 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
910 | HOWTO (R_PPC64_PLT64, /* type */ |
911 | 0, /* rightshift */ | |
912 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
913 | 64, /* bitsize */ | |
b34976b6 | 914 | FALSE, /* pc_relative */ |
5bd4f169 AM |
915 | 0, /* bitpos */ |
916 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 917 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 918 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 919 | FALSE, /* partial_inplace */ |
5bd4f169 | 920 | 0, /* src_mask */ |
f5e87a1d | 921 | ONES (64), /* dst_mask */ |
b34976b6 | 922 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
923 | |
924 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
925 | table. */ | |
926 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
927 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
928 | 0, /* rightshift */ | |
929 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
930 | 64, /* bitsize */ | |
b34976b6 | 931 | TRUE, /* pc_relative */ |
5bd4f169 AM |
932 | 0, /* bitpos */ |
933 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 934 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 935 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 936 | FALSE, /* partial_inplace */ |
5bd4f169 | 937 | 0, /* src_mask */ |
f5e87a1d | 938 | ONES (64), /* dst_mask */ |
b34976b6 | 939 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
940 | |
941 | /* 16 bit TOC-relative relocation. */ | |
942 | ||
943 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
944 | HOWTO (R_PPC64_TOC16, /* type */ | |
945 | 0, /* rightshift */ | |
946 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
947 | 16, /* bitsize */ | |
b34976b6 | 948 | FALSE, /* pc_relative */ |
5bd4f169 AM |
949 | 0, /* bitpos */ |
950 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 951 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 952 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 953 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
954 | 0, /* src_mask */ |
955 | 0xffff, /* dst_mask */ | |
b34976b6 | 956 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
957 | |
958 | /* 16 bit TOC-relative relocation without overflow. */ | |
959 | ||
960 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
961 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
962 | 0, /* rightshift */ | |
963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
964 | 16, /* bitsize */ | |
b34976b6 | 965 | FALSE, /* pc_relative */ |
5bd4f169 AM |
966 | 0, /* bitpos */ |
967 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 968 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 969 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 970 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
971 | 0, /* src_mask */ |
972 | 0xffff, /* dst_mask */ | |
b34976b6 | 973 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
974 | |
975 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
976 | ||
977 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
978 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
979 | 16, /* rightshift */ | |
980 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
981 | 16, /* bitsize */ | |
b34976b6 | 982 | FALSE, /* pc_relative */ |
5bd4f169 | 983 | 0, /* bitpos */ |
f9c6b907 | 984 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 985 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 986 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 987 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
988 | 0, /* src_mask */ |
989 | 0xffff, /* dst_mask */ | |
b34976b6 | 990 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
991 | |
992 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
993 | contents of the low 16 bits, treated as a signed number, is | |
994 | negative. */ | |
995 | ||
996 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
997 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
998 | 16, /* rightshift */ | |
999 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1000 | 16, /* bitsize */ | |
b34976b6 | 1001 | FALSE, /* pc_relative */ |
5bd4f169 | 1002 | 0, /* bitpos */ |
f9c6b907 | 1003 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1004 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1005 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1006 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1007 | 0, /* src_mask */ |
1008 | 0xffff, /* dst_mask */ | |
b34976b6 | 1009 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1010 | |
1011 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1012 | ||
1013 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1014 | HOWTO (R_PPC64_TOC, /* type */ | |
1015 | 0, /* rightshift */ | |
1016 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1017 | 64, /* bitsize */ | |
b34976b6 | 1018 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1019 | 0, /* bitpos */ |
1020 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1021 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1022 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1023 | FALSE, /* partial_inplace */ |
5bd4f169 | 1024 | 0, /* src_mask */ |
f5e87a1d | 1025 | ONES (64), /* dst_mask */ |
b34976b6 | 1026 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1027 | |
1028 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1029 | value to relocate may (!) refer to a PLT entry which the link | |
1030 | editor (a) may replace with the symbol value. If the link editor | |
1031 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1032 | entry and store the address to the new PLT entry in the GOT. | |
1033 | This permits lazy resolution of function symbols at run time. | |
1034 | The link editor may also skip all of this and just (c) emit a | |
1035 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1036 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1037 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1038 | 0, /* rightshift */ | |
1039 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1040 | 16, /* bitsize */ | |
b34976b6 | 1041 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1042 | 0, /* bitpos */ |
1043 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1044 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1045 | "R_PPC64_PLTGOT16", /* name */ |
1046 | FALSE, /* partial_inplace */ | |
1047 | 0, /* src_mask */ | |
1048 | 0xffff, /* dst_mask */ | |
1049 | FALSE), /* pcrel_offset */ | |
1050 | ||
1051 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1052 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1053 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1054 | 0, /* rightshift */ | |
1055 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1056 | 16, /* bitsize */ | |
1057 | FALSE, /* pc_relative */ | |
1058 | 0, /* bitpos */ | |
1059 | complain_overflow_dont, /* complain_on_overflow */ | |
1060 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1061 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1062 | FALSE, /* partial_inplace */ | |
1063 | 0, /* src_mask */ | |
1064 | 0xffff, /* dst_mask */ | |
1065 | FALSE), /* pcrel_offset */ | |
1066 | ||
1067 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1068 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1069 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1070 | 16, /* rightshift */ | |
1071 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1072 | 16, /* bitsize */ | |
1073 | FALSE, /* pc_relative */ | |
1074 | 0, /* bitpos */ | |
f9c6b907 | 1075 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1076 | ppc64_elf_unhandled_reloc, /* special_function */ |
1077 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1078 | FALSE, /* partial_inplace */ | |
1079 | 0, /* src_mask */ | |
1080 | 0xffff, /* dst_mask */ | |
1081 | FALSE), /* pcrel_offset */ | |
1082 | ||
1083 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1084 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1085 | is negative. */ | |
1086 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1087 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1088 | 16, /* rightshift */ | |
1089 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1090 | 16, /* bitsize */ | |
1091 | FALSE, /* pc_relative */ | |
1092 | 0, /* bitpos */ | |
f9c6b907 | 1093 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1094 | ppc64_elf_unhandled_reloc, /* special_function */ |
1095 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1096 | FALSE, /* partial_inplace */ | |
1097 | 0, /* src_mask */ | |
1098 | 0xffff, /* dst_mask */ | |
1099 | FALSE), /* pcrel_offset */ | |
1100 | ||
1101 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1102 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1103 | 0, /* rightshift */ | |
1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1109 | bfd_elf_generic_reloc, /* special_function */ | |
1110 | "R_PPC64_ADDR16_DS", /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0, /* src_mask */ | |
1113 | 0xfffc, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1117 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1118 | 0, /* rightshift */ | |
1119 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 16, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont,/* complain_on_overflow */ | |
1124 | bfd_elf_generic_reloc, /* special_function */ | |
1125 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0, /* src_mask */ | |
1128 | 0xfffc, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
1130 | ||
1131 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1132 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1133 | 0, /* rightshift */ | |
1134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 16, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_signed, /* complain_on_overflow */ | |
1139 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1140 | "R_PPC64_GOT16_DS", /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0, /* src_mask */ | |
1143 | 0xfffc, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
1145 | ||
1146 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1147 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 16, /* bitsize */ | |
1151 | FALSE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_dont, /* complain_on_overflow */ | |
1154 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1155 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0, /* src_mask */ | |
1158 | 0xfffc, /* dst_mask */ | |
1159 | FALSE), /* pcrel_offset */ | |
1160 | ||
1161 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1162 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1163 | 0, /* rightshift */ | |
1164 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1165 | 16, /* bitsize */ | |
1166 | FALSE, /* pc_relative */ | |
1167 | 0, /* bitpos */ | |
1168 | complain_overflow_dont, /* complain_on_overflow */ | |
1169 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1170 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1171 | FALSE, /* partial_inplace */ | |
1172 | 0, /* src_mask */ | |
1173 | 0xfffc, /* dst_mask */ | |
1174 | FALSE), /* pcrel_offset */ | |
1175 | ||
1176 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1177 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1178 | 0, /* rightshift */ | |
1179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 16, /* bitsize */ | |
1181 | FALSE, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1184 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1185 | "R_PPC64_SECTOFF_DS", /* name */ | |
1186 | FALSE, /* partial_inplace */ | |
1187 | 0, /* src_mask */ | |
1188 | 0xfffc, /* dst_mask */ | |
1189 | FALSE), /* pcrel_offset */ | |
1190 | ||
1191 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1192 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1193 | 0, /* rightshift */ | |
1194 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 16, /* bitsize */ | |
1196 | FALSE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_dont, /* complain_on_overflow */ | |
1199 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1200 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0, /* src_mask */ | |
1203 | 0xfffc, /* dst_mask */ | |
1204 | FALSE), /* pcrel_offset */ | |
1205 | ||
1206 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1207 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1208 | 0, /* rightshift */ | |
1209 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 16, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_signed, /* complain_on_overflow */ | |
1214 | ppc64_elf_toc_reloc, /* special_function */ | |
1215 | "R_PPC64_TOC16_DS", /* name */ | |
1216 | FALSE, /* partial_inplace */ | |
1217 | 0, /* src_mask */ | |
1218 | 0xfffc, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
1221 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1222 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1223 | 0, /* rightshift */ | |
1224 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1225 | 16, /* bitsize */ | |
1226 | FALSE, /* pc_relative */ | |
1227 | 0, /* bitpos */ | |
1228 | complain_overflow_dont, /* complain_on_overflow */ | |
1229 | ppc64_elf_toc_reloc, /* special_function */ | |
1230 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1231 | FALSE, /* partial_inplace */ | |
1232 | 0, /* src_mask */ | |
1233 | 0xfffc, /* dst_mask */ | |
1234 | FALSE), /* pcrel_offset */ | |
1235 | ||
1236 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1237 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1238 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1239 | 0, /* rightshift */ |
1240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1241 | 16, /* bitsize */ | |
1242 | FALSE, /* pc_relative */ | |
1243 | 0, /* bitpos */ | |
1244 | complain_overflow_signed, /* complain_on_overflow */ | |
1245 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1246 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1247 | FALSE, /* partial_inplace */ | |
1248 | 0, /* src_mask */ | |
1249 | 0xfffc, /* dst_mask */ | |
1250 | FALSE), /* pcrel_offset */ | |
1251 | ||
1252 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1253 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1254 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1255 | 0, /* rightshift */ | |
1256 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 16, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1262 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0, /* src_mask */ | |
1265 | 0xfffc, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
727fc41e | 1268 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1269 | HOWTO (R_PPC64_TLS, |
1270 | 0, /* rightshift */ | |
1271 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1272 | 32, /* bitsize */ | |
1273 | FALSE, /* pc_relative */ | |
1274 | 0, /* bitpos */ | |
1275 | complain_overflow_dont, /* complain_on_overflow */ | |
1276 | bfd_elf_generic_reloc, /* special_function */ | |
1277 | "R_PPC64_TLS", /* name */ | |
1278 | FALSE, /* partial_inplace */ | |
1279 | 0, /* src_mask */ | |
1280 | 0, /* dst_mask */ | |
1281 | FALSE), /* pcrel_offset */ | |
1282 | ||
727fc41e AM |
1283 | HOWTO (R_PPC64_TLSGD, |
1284 | 0, /* rightshift */ | |
1285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 32, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont, /* complain_on_overflow */ | |
1290 | bfd_elf_generic_reloc, /* special_function */ | |
1291 | "R_PPC64_TLSGD", /* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0, /* src_mask */ | |
1294 | 0, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
1297 | HOWTO (R_PPC64_TLSLD, | |
1298 | 0, /* rightshift */ | |
1299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1300 | 32, /* bitsize */ | |
1301 | FALSE, /* pc_relative */ | |
1302 | 0, /* bitpos */ | |
1303 | complain_overflow_dont, /* complain_on_overflow */ | |
1304 | bfd_elf_generic_reloc, /* special_function */ | |
1305 | "R_PPC64_TLSLD", /* name */ | |
1306 | FALSE, /* partial_inplace */ | |
1307 | 0, /* src_mask */ | |
1308 | 0, /* dst_mask */ | |
1309 | FALSE), /* pcrel_offset */ | |
1310 | ||
3b421ab3 AM |
1311 | HOWTO (R_PPC64_TOCSAVE, |
1312 | 0, /* rightshift */ | |
1313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 32, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 0, /* bitpos */ | |
1317 | complain_overflow_dont, /* complain_on_overflow */ | |
1318 | bfd_elf_generic_reloc, /* special_function */ | |
1319 | "R_PPC64_TOCSAVE", /* name */ | |
1320 | FALSE, /* partial_inplace */ | |
1321 | 0, /* src_mask */ | |
1322 | 0, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
411e1bfb AM |
1325 | /* Computes the load module index of the load module that contains the |
1326 | definition of its TLS sym. */ | |
1327 | HOWTO (R_PPC64_DTPMOD64, | |
1328 | 0, /* rightshift */ | |
1329 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1330 | 64, /* bitsize */ | |
1331 | FALSE, /* pc_relative */ | |
1332 | 0, /* bitpos */ | |
1333 | complain_overflow_dont, /* complain_on_overflow */ | |
1334 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1335 | "R_PPC64_DTPMOD64", /* name */ | |
1336 | FALSE, /* partial_inplace */ | |
1337 | 0, /* src_mask */ | |
1338 | ONES (64), /* dst_mask */ | |
1339 | FALSE), /* pcrel_offset */ | |
1340 | ||
1341 | /* Computes a dtv-relative displacement, the difference between the value | |
1342 | of sym+add and the base address of the thread-local storage block that | |
1343 | contains the definition of sym, minus 0x8000. */ | |
1344 | HOWTO (R_PPC64_DTPREL64, | |
1345 | 0, /* rightshift */ | |
1346 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1347 | 64, /* bitsize */ | |
1348 | FALSE, /* pc_relative */ | |
1349 | 0, /* bitpos */ | |
1350 | complain_overflow_dont, /* complain_on_overflow */ | |
1351 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1352 | "R_PPC64_DTPREL64", /* name */ | |
1353 | FALSE, /* partial_inplace */ | |
1354 | 0, /* src_mask */ | |
1355 | ONES (64), /* dst_mask */ | |
1356 | FALSE), /* pcrel_offset */ | |
1357 | ||
1358 | /* A 16 bit dtprel reloc. */ | |
1359 | HOWTO (R_PPC64_DTPREL16, | |
1360 | 0, /* rightshift */ | |
1361 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1362 | 16, /* bitsize */ | |
1363 | FALSE, /* pc_relative */ | |
1364 | 0, /* bitpos */ | |
1365 | complain_overflow_signed, /* complain_on_overflow */ | |
1366 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1367 | "R_PPC64_DTPREL16", /* name */ | |
1368 | FALSE, /* partial_inplace */ | |
1369 | 0, /* src_mask */ | |
1370 | 0xffff, /* dst_mask */ | |
1371 | FALSE), /* pcrel_offset */ | |
1372 | ||
1373 | /* Like DTPREL16, but no overflow. */ | |
1374 | HOWTO (R_PPC64_DTPREL16_LO, | |
1375 | 0, /* rightshift */ | |
1376 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1377 | 16, /* bitsize */ | |
1378 | FALSE, /* pc_relative */ | |
1379 | 0, /* bitpos */ | |
1380 | complain_overflow_dont, /* complain_on_overflow */ | |
1381 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1382 | "R_PPC64_DTPREL16_LO", /* name */ | |
1383 | FALSE, /* partial_inplace */ | |
1384 | 0, /* src_mask */ | |
1385 | 0xffff, /* dst_mask */ | |
1386 | FALSE), /* pcrel_offset */ | |
1387 | ||
1388 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1389 | HOWTO (R_PPC64_DTPREL16_HI, | |
1390 | 16, /* rightshift */ | |
1391 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1392 | 16, /* bitsize */ | |
1393 | FALSE, /* pc_relative */ | |
1394 | 0, /* bitpos */ | |
f9c6b907 | 1395 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1396 | ppc64_elf_unhandled_reloc, /* special_function */ |
1397 | "R_PPC64_DTPREL16_HI", /* name */ | |
1398 | FALSE, /* partial_inplace */ | |
1399 | 0, /* src_mask */ | |
1400 | 0xffff, /* dst_mask */ | |
1401 | FALSE), /* pcrel_offset */ | |
1402 | ||
1403 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1404 | HOWTO (R_PPC64_DTPREL16_HA, | |
1405 | 16, /* rightshift */ | |
1406 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1407 | 16, /* bitsize */ | |
1408 | FALSE, /* pc_relative */ | |
1409 | 0, /* bitpos */ | |
f9c6b907 | 1410 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1411 | ppc64_elf_unhandled_reloc, /* special_function */ |
1412 | "R_PPC64_DTPREL16_HA", /* name */ | |
1413 | FALSE, /* partial_inplace */ | |
1414 | 0, /* src_mask */ | |
1415 | 0xffff, /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
1418 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1419 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1420 | 32, /* rightshift */ | |
1421 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1422 | 16, /* bitsize */ | |
1423 | FALSE, /* pc_relative */ | |
1424 | 0, /* bitpos */ | |
1425 | complain_overflow_dont, /* complain_on_overflow */ | |
1426 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1427 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1428 | FALSE, /* partial_inplace */ | |
1429 | 0, /* src_mask */ | |
1430 | 0xffff, /* dst_mask */ | |
1431 | FALSE), /* pcrel_offset */ | |
1432 | ||
1433 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1434 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1435 | 32, /* rightshift */ | |
1436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1437 | 16, /* bitsize */ | |
1438 | FALSE, /* pc_relative */ | |
1439 | 0, /* bitpos */ | |
1440 | complain_overflow_dont, /* complain_on_overflow */ | |
1441 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1442 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1443 | FALSE, /* partial_inplace */ | |
1444 | 0, /* src_mask */ | |
1445 | 0xffff, /* dst_mask */ | |
1446 | FALSE), /* pcrel_offset */ | |
1447 | ||
1448 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1449 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1450 | 48, /* rightshift */ | |
1451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1452 | 16, /* bitsize */ | |
1453 | FALSE, /* pc_relative */ | |
1454 | 0, /* bitpos */ | |
1455 | complain_overflow_dont, /* complain_on_overflow */ | |
1456 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1457 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1458 | FALSE, /* partial_inplace */ | |
1459 | 0, /* src_mask */ | |
1460 | 0xffff, /* dst_mask */ | |
1461 | FALSE), /* pcrel_offset */ | |
1462 | ||
1463 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1464 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1465 | 48, /* rightshift */ | |
1466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1467 | 16, /* bitsize */ | |
1468 | FALSE, /* pc_relative */ | |
1469 | 0, /* bitpos */ | |
1470 | complain_overflow_dont, /* complain_on_overflow */ | |
1471 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1472 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1473 | FALSE, /* partial_inplace */ | |
1474 | 0, /* src_mask */ | |
1475 | 0xffff, /* dst_mask */ | |
1476 | FALSE), /* pcrel_offset */ | |
1477 | ||
1478 | /* Like DTPREL16, but for insns with a DS field. */ | |
1479 | HOWTO (R_PPC64_DTPREL16_DS, | |
1480 | 0, /* rightshift */ | |
1481 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1482 | 16, /* bitsize */ | |
1483 | FALSE, /* pc_relative */ | |
1484 | 0, /* bitpos */ | |
1485 | complain_overflow_signed, /* complain_on_overflow */ | |
1486 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1487 | "R_PPC64_DTPREL16_DS", /* name */ | |
1488 | FALSE, /* partial_inplace */ | |
1489 | 0, /* src_mask */ | |
1490 | 0xfffc, /* dst_mask */ | |
1491 | FALSE), /* pcrel_offset */ | |
1492 | ||
1493 | /* Like DTPREL16_DS, but no overflow. */ | |
1494 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1495 | 0, /* rightshift */ | |
1496 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 16, /* bitsize */ | |
1498 | FALSE, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1502 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1503 | FALSE, /* partial_inplace */ | |
1504 | 0, /* src_mask */ | |
1505 | 0xfffc, /* dst_mask */ | |
1506 | FALSE), /* pcrel_offset */ | |
1507 | ||
1508 | /* Computes a tp-relative displacement, the difference between the value of | |
1509 | sym+add and the value of the thread pointer (r13). */ | |
1510 | HOWTO (R_PPC64_TPREL64, | |
1511 | 0, /* rightshift */ | |
1512 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1513 | 64, /* bitsize */ | |
1514 | FALSE, /* pc_relative */ | |
1515 | 0, /* bitpos */ | |
1516 | complain_overflow_dont, /* complain_on_overflow */ | |
1517 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1518 | "R_PPC64_TPREL64", /* name */ | |
1519 | FALSE, /* partial_inplace */ | |
1520 | 0, /* src_mask */ | |
1521 | ONES (64), /* dst_mask */ | |
1522 | FALSE), /* pcrel_offset */ | |
1523 | ||
1524 | /* A 16 bit tprel reloc. */ | |
1525 | HOWTO (R_PPC64_TPREL16, | |
1526 | 0, /* rightshift */ | |
1527 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1528 | 16, /* bitsize */ | |
1529 | FALSE, /* pc_relative */ | |
1530 | 0, /* bitpos */ | |
1531 | complain_overflow_signed, /* complain_on_overflow */ | |
1532 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1533 | "R_PPC64_TPREL16", /* name */ | |
1534 | FALSE, /* partial_inplace */ | |
1535 | 0, /* src_mask */ | |
1536 | 0xffff, /* dst_mask */ | |
1537 | FALSE), /* pcrel_offset */ | |
1538 | ||
1539 | /* Like TPREL16, but no overflow. */ | |
1540 | HOWTO (R_PPC64_TPREL16_LO, | |
1541 | 0, /* rightshift */ | |
1542 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1543 | 16, /* bitsize */ | |
1544 | FALSE, /* pc_relative */ | |
1545 | 0, /* bitpos */ | |
1546 | complain_overflow_dont, /* complain_on_overflow */ | |
1547 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1548 | "R_PPC64_TPREL16_LO", /* name */ | |
1549 | FALSE, /* partial_inplace */ | |
1550 | 0, /* src_mask */ | |
1551 | 0xffff, /* dst_mask */ | |
1552 | FALSE), /* pcrel_offset */ | |
1553 | ||
1554 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1555 | HOWTO (R_PPC64_TPREL16_HI, | |
1556 | 16, /* rightshift */ | |
1557 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1558 | 16, /* bitsize */ | |
1559 | FALSE, /* pc_relative */ | |
1560 | 0, /* bitpos */ | |
f9c6b907 | 1561 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1562 | ppc64_elf_unhandled_reloc, /* special_function */ |
1563 | "R_PPC64_TPREL16_HI", /* name */ | |
1564 | FALSE, /* partial_inplace */ | |
1565 | 0, /* src_mask */ | |
1566 | 0xffff, /* dst_mask */ | |
1567 | FALSE), /* pcrel_offset */ | |
1568 | ||
1569 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1570 | HOWTO (R_PPC64_TPREL16_HA, | |
1571 | 16, /* rightshift */ | |
1572 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 16, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
1575 | 0, /* bitpos */ | |
f9c6b907 | 1576 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1577 | ppc64_elf_unhandled_reloc, /* special_function */ |
1578 | "R_PPC64_TPREL16_HA", /* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0, /* src_mask */ | |
1581 | 0xffff, /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
1583 | ||
1584 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1585 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1586 | 32, /* rightshift */ | |
1587 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1588 | 16, /* bitsize */ | |
1589 | FALSE, /* pc_relative */ | |
1590 | 0, /* bitpos */ | |
1591 | complain_overflow_dont, /* complain_on_overflow */ | |
1592 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1593 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1594 | FALSE, /* partial_inplace */ | |
1595 | 0, /* src_mask */ | |
1596 | 0xffff, /* dst_mask */ | |
1597 | FALSE), /* pcrel_offset */ | |
1598 | ||
1599 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1600 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1601 | 32, /* rightshift */ | |
1602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1603 | 16, /* bitsize */ | |
1604 | FALSE, /* pc_relative */ | |
1605 | 0, /* bitpos */ | |
1606 | complain_overflow_dont, /* complain_on_overflow */ | |
1607 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1609 | FALSE, /* partial_inplace */ | |
1610 | 0, /* src_mask */ | |
1611 | 0xffff, /* dst_mask */ | |
1612 | FALSE), /* pcrel_offset */ | |
1613 | ||
1614 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1615 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1616 | 48, /* rightshift */ | |
1617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 16, /* bitsize */ | |
1619 | FALSE, /* pc_relative */ | |
1620 | 0, /* bitpos */ | |
1621 | complain_overflow_dont, /* complain_on_overflow */ | |
1622 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1623 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1624 | FALSE, /* partial_inplace */ | |
1625 | 0, /* src_mask */ | |
1626 | 0xffff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
1628 | ||
1629 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1630 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1631 | 48, /* rightshift */ | |
1632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 16, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
1636 | complain_overflow_dont, /* complain_on_overflow */ | |
1637 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1638 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1639 | FALSE, /* partial_inplace */ | |
1640 | 0, /* src_mask */ | |
1641 | 0xffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
1644 | /* Like TPREL16, but for insns with a DS field. */ | |
1645 | HOWTO (R_PPC64_TPREL16_DS, | |
1646 | 0, /* rightshift */ | |
1647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1648 | 16, /* bitsize */ | |
1649 | FALSE, /* pc_relative */ | |
1650 | 0, /* bitpos */ | |
1651 | complain_overflow_signed, /* complain_on_overflow */ | |
1652 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1653 | "R_PPC64_TPREL16_DS", /* name */ | |
1654 | FALSE, /* partial_inplace */ | |
1655 | 0, /* src_mask */ | |
1656 | 0xfffc, /* dst_mask */ | |
1657 | FALSE), /* pcrel_offset */ | |
1658 | ||
1659 | /* Like TPREL16_DS, but no overflow. */ | |
1660 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1661 | 0, /* rightshift */ | |
1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 16, /* bitsize */ | |
1664 | FALSE, /* pc_relative */ | |
1665 | 0, /* bitpos */ | |
1666 | complain_overflow_dont, /* complain_on_overflow */ | |
1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1668 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1669 | FALSE, /* partial_inplace */ | |
1670 | 0, /* src_mask */ | |
1671 | 0xfffc, /* dst_mask */ | |
1672 | FALSE), /* pcrel_offset */ | |
1673 | ||
1674 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1675 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1676 | to the first entry relative to the TOC base (r2). */ | |
1677 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1678 | 0, /* rightshift */ | |
1679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1680 | 16, /* bitsize */ | |
1681 | FALSE, /* pc_relative */ | |
1682 | 0, /* bitpos */ | |
1683 | complain_overflow_signed, /* complain_on_overflow */ | |
1684 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1685 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1686 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1687 | 0, /* src_mask */ |
1688 | 0xffff, /* dst_mask */ | |
b34976b6 | 1689 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1690 | |
411e1bfb AM |
1691 | /* Like GOT_TLSGD16, but no overflow. */ |
1692 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1693 | 0, /* rightshift */ |
1694 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1695 | 16, /* bitsize */ | |
b34976b6 | 1696 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1697 | 0, /* bitpos */ |
1698 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1699 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1700 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1701 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1702 | 0, /* src_mask */ |
1703 | 0xffff, /* dst_mask */ | |
b34976b6 | 1704 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1705 | |
411e1bfb AM |
1706 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1707 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1708 | 16, /* rightshift */ |
1709 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1710 | 16, /* bitsize */ | |
b34976b6 | 1711 | FALSE, /* pc_relative */ |
5bd4f169 | 1712 | 0, /* bitpos */ |
f9c6b907 | 1713 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1714 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1715 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1716 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1717 | 0, /* src_mask */ |
1718 | 0xffff, /* dst_mask */ | |
b34976b6 | 1719 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1720 | |
411e1bfb AM |
1721 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1722 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1723 | 16, /* rightshift */ |
1724 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1725 | 16, /* bitsize */ | |
b34976b6 | 1726 | FALSE, /* pc_relative */ |
5bd4f169 | 1727 | 0, /* bitpos */ |
f9c6b907 | 1728 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1729 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1730 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1731 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1732 | 0, /* src_mask */ |
1733 | 0xffff, /* dst_mask */ | |
b34976b6 | 1734 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1735 | |
411e1bfb AM |
1736 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1737 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1738 | first entry relative to the TOC base (r2). */ | |
1739 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1740 | 0, /* rightshift */ |
1741 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1742 | 16, /* bitsize */ | |
b34976b6 | 1743 | FALSE, /* pc_relative */ |
5bd4f169 | 1744 | 0, /* bitpos */ |
411e1bfb AM |
1745 | complain_overflow_signed, /* complain_on_overflow */ |
1746 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1747 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1748 | FALSE, /* partial_inplace */ |
d006db6c | 1749 | 0, /* src_mask */ |
411e1bfb | 1750 | 0xffff, /* dst_mask */ |
b34976b6 | 1751 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1752 | |
411e1bfb AM |
1753 | /* Like GOT_TLSLD16, but no overflow. */ |
1754 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1755 | 0, /* rightshift */ |
1756 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1757 | 16, /* bitsize */ | |
b34976b6 | 1758 | FALSE, /* pc_relative */ |
5bd4f169 | 1759 | 0, /* bitpos */ |
411e1bfb AM |
1760 | complain_overflow_dont, /* complain_on_overflow */ |
1761 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1762 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1763 | FALSE, /* partial_inplace */ |
d006db6c | 1764 | 0, /* src_mask */ |
411e1bfb | 1765 | 0xffff, /* dst_mask */ |
b34976b6 | 1766 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1767 | |
411e1bfb AM |
1768 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1769 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1770 | 16, /* rightshift */ | |
5bd4f169 AM |
1771 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1772 | 16, /* bitsize */ | |
b34976b6 | 1773 | FALSE, /* pc_relative */ |
5bd4f169 | 1774 | 0, /* bitpos */ |
f9c6b907 | 1775 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1776 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1777 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1778 | FALSE, /* partial_inplace */ |
d006db6c | 1779 | 0, /* src_mask */ |
411e1bfb | 1780 | 0xffff, /* dst_mask */ |
b34976b6 | 1781 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1782 | |
411e1bfb AM |
1783 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1784 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1785 | 16, /* rightshift */ | |
5bd4f169 AM |
1786 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1787 | 16, /* bitsize */ | |
b34976b6 | 1788 | FALSE, /* pc_relative */ |
5bd4f169 | 1789 | 0, /* bitpos */ |
f9c6b907 | 1790 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1791 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1792 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1793 | FALSE, /* partial_inplace */ |
d006db6c | 1794 | 0, /* src_mask */ |
411e1bfb | 1795 | 0xffff, /* dst_mask */ |
b34976b6 | 1796 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1797 | |
411e1bfb AM |
1798 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1799 | the offset to the entry relative to the TOC base (r2). */ | |
1800 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1801 | 0, /* rightshift */ |
1802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1803 | 16, /* bitsize */ | |
b34976b6 | 1804 | FALSE, /* pc_relative */ |
5bd4f169 | 1805 | 0, /* bitpos */ |
411e1bfb | 1806 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1807 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1808 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1809 | FALSE, /* partial_inplace */ |
d006db6c | 1810 | 0, /* src_mask */ |
5bd4f169 | 1811 | 0xfffc, /* dst_mask */ |
b34976b6 | 1812 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1813 | |
411e1bfb AM |
1814 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1815 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1816 | 0, /* rightshift */ |
c061c2d8 AM |
1817 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1818 | 16, /* bitsize */ | |
b34976b6 | 1819 | FALSE, /* pc_relative */ |
5bd4f169 | 1820 | 0, /* bitpos */ |
411e1bfb AM |
1821 | complain_overflow_dont, /* complain_on_overflow */ |
1822 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1823 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1824 | FALSE, /* partial_inplace */ |
d006db6c | 1825 | 0, /* src_mask */ |
c061c2d8 | 1826 | 0xfffc, /* dst_mask */ |
b34976b6 | 1827 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1828 | |
411e1bfb AM |
1829 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1830 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1831 | 16, /* rightshift */ | |
5bd4f169 AM |
1832 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1833 | 16, /* bitsize */ | |
b34976b6 | 1834 | FALSE, /* pc_relative */ |
5bd4f169 | 1835 | 0, /* bitpos */ |
f9c6b907 | 1836 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1837 | ppc64_elf_unhandled_reloc, /* special_function */ |
1838 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1839 | FALSE, /* partial_inplace */ |
d006db6c | 1840 | 0, /* src_mask */ |
411e1bfb | 1841 | 0xffff, /* dst_mask */ |
b34976b6 | 1842 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1843 | |
411e1bfb AM |
1844 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1845 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1846 | 16, /* rightshift */ | |
1847 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1848 | 16, /* bitsize */ | |
1849 | FALSE, /* pc_relative */ | |
1850 | 0, /* bitpos */ | |
f9c6b907 | 1851 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1852 | ppc64_elf_unhandled_reloc, /* special_function */ |
1853 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1854 | FALSE, /* partial_inplace */ | |
1855 | 0, /* src_mask */ | |
1856 | 0xffff, /* dst_mask */ | |
1857 | FALSE), /* pcrel_offset */ | |
1858 | ||
1859 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1860 | offset to the entry relative to the TOC base (r2). */ | |
1861 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1862 | 0, /* rightshift */ |
1863 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1864 | 16, /* bitsize */ | |
b34976b6 | 1865 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1866 | 0, /* bitpos */ |
1867 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1868 | ppc64_elf_unhandled_reloc, /* special_function */ |
1869 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1870 | FALSE, /* partial_inplace */ |
d006db6c | 1871 | 0, /* src_mask */ |
ad8e1ba5 | 1872 | 0xfffc, /* dst_mask */ |
b34976b6 | 1873 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1874 | |
411e1bfb AM |
1875 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1876 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1877 | 0, /* rightshift */ |
1878 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1879 | 16, /* bitsize */ | |
b34976b6 | 1880 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1881 | 0, /* bitpos */ |
1882 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1883 | ppc64_elf_unhandled_reloc, /* special_function */ |
1884 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1885 | FALSE, /* partial_inplace */ |
d006db6c | 1886 | 0, /* src_mask */ |
ad8e1ba5 | 1887 | 0xfffc, /* dst_mask */ |
b34976b6 | 1888 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1889 | |
411e1bfb AM |
1890 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1891 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1892 | 16, /* rightshift */ | |
5bd4f169 AM |
1893 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1894 | 16, /* bitsize */ | |
b34976b6 | 1895 | FALSE, /* pc_relative */ |
5bd4f169 | 1896 | 0, /* bitpos */ |
f9c6b907 | 1897 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1898 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1899 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1900 | FALSE, /* partial_inplace */ |
d006db6c | 1901 | 0, /* src_mask */ |
411e1bfb | 1902 | 0xffff, /* dst_mask */ |
b34976b6 | 1903 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1904 | |
411e1bfb AM |
1905 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1906 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1907 | 16, /* rightshift */ | |
5bd4f169 AM |
1908 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1909 | 16, /* bitsize */ | |
b34976b6 | 1910 | FALSE, /* pc_relative */ |
5bd4f169 | 1911 | 0, /* bitpos */ |
f9c6b907 | 1912 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1913 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1914 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1915 | FALSE, /* partial_inplace */ |
d006db6c | 1916 | 0, /* src_mask */ |
411e1bfb | 1917 | 0xffff, /* dst_mask */ |
b34976b6 | 1918 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1919 | |
25f23106 AM |
1920 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1921 | 0, /* rightshift */ | |
1922 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1923 | 0, /* bitsize */ | |
1924 | FALSE, /* pc_relative */ | |
1925 | 0, /* bitpos */ | |
1926 | complain_overflow_dont, /* complain_on_overflow */ | |
1927 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1928 | "R_PPC64_JMP_IREL", /* name */ | |
1929 | FALSE, /* partial_inplace */ | |
1930 | 0, /* src_mask */ | |
1931 | 0, /* dst_mask */ | |
1932 | FALSE), /* pcrel_offset */ | |
1933 | ||
e054468f AM |
1934 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1935 | 0, /* rightshift */ | |
1936 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1937 | 64, /* bitsize */ | |
1938 | FALSE, /* pc_relative */ | |
1939 | 0, /* bitpos */ | |
1940 | complain_overflow_dont, /* complain_on_overflow */ | |
1941 | bfd_elf_generic_reloc, /* special_function */ | |
1942 | "R_PPC64_IRELATIVE", /* name */ | |
1943 | FALSE, /* partial_inplace */ | |
1944 | 0, /* src_mask */ | |
1945 | ONES (64), /* dst_mask */ | |
1946 | FALSE), /* pcrel_offset */ | |
1947 | ||
25f23106 AM |
1948 | /* A 16 bit relative relocation. */ |
1949 | HOWTO (R_PPC64_REL16, /* type */ | |
1950 | 0, /* rightshift */ | |
1951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1952 | 16, /* bitsize */ | |
1953 | TRUE, /* pc_relative */ | |
1954 | 0, /* bitpos */ | |
1955 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1956 | bfd_elf_generic_reloc, /* special_function */ | |
1957 | "R_PPC64_REL16", /* name */ | |
1958 | FALSE, /* partial_inplace */ | |
1959 | 0, /* src_mask */ | |
1960 | 0xffff, /* dst_mask */ | |
1961 | TRUE), /* pcrel_offset */ | |
1962 | ||
1963 | /* A 16 bit relative relocation without overflow. */ | |
1964 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1965 | 0, /* rightshift */ | |
1966 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1967 | 16, /* bitsize */ | |
1968 | TRUE, /* pc_relative */ | |
1969 | 0, /* bitpos */ | |
1970 | complain_overflow_dont,/* complain_on_overflow */ | |
1971 | bfd_elf_generic_reloc, /* special_function */ | |
1972 | "R_PPC64_REL16_LO", /* name */ | |
1973 | FALSE, /* partial_inplace */ | |
1974 | 0, /* src_mask */ | |
1975 | 0xffff, /* dst_mask */ | |
1976 | TRUE), /* pcrel_offset */ | |
1977 | ||
1978 | /* The high order 16 bits of a relative address. */ | |
1979 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1980 | 16, /* rightshift */ | |
1981 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1982 | 16, /* bitsize */ | |
1983 | TRUE, /* pc_relative */ | |
1984 | 0, /* bitpos */ | |
f9c6b907 | 1985 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1986 | bfd_elf_generic_reloc, /* special_function */ |
1987 | "R_PPC64_REL16_HI", /* name */ | |
1988 | FALSE, /* partial_inplace */ | |
1989 | 0, /* src_mask */ | |
1990 | 0xffff, /* dst_mask */ | |
1991 | TRUE), /* pcrel_offset */ | |
1992 | ||
1993 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1994 | the low 16 bits, treated as a signed number, is negative. */ | |
1995 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1996 | 16, /* rightshift */ | |
1997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1998 | 16, /* bitsize */ | |
1999 | TRUE, /* pc_relative */ | |
2000 | 0, /* bitpos */ | |
f9c6b907 | 2001 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2002 | ppc64_elf_ha_reloc, /* special_function */ |
2003 | "R_PPC64_REL16_HA", /* name */ | |
2004 | FALSE, /* partial_inplace */ | |
2005 | 0, /* src_mask */ | |
2006 | 0xffff, /* dst_mask */ | |
2007 | TRUE), /* pcrel_offset */ | |
2008 | ||
f9c6b907 AM |
2009 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2010 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2011 | 16, /* rightshift */ | |
2012 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2013 | 16, /* bitsize */ | |
2014 | FALSE, /* pc_relative */ | |
2015 | 0, /* bitpos */ | |
2016 | complain_overflow_dont, /* complain_on_overflow */ | |
2017 | bfd_elf_generic_reloc, /* special_function */ | |
2018 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2019 | FALSE, /* partial_inplace */ | |
2020 | 0, /* src_mask */ | |
2021 | 0xffff, /* dst_mask */ | |
2022 | FALSE), /* pcrel_offset */ | |
2023 | ||
2024 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2025 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2026 | 16, /* rightshift */ | |
2027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2028 | 16, /* bitsize */ | |
2029 | FALSE, /* pc_relative */ | |
2030 | 0, /* bitpos */ | |
2031 | complain_overflow_dont, /* complain_on_overflow */ | |
2032 | ppc64_elf_ha_reloc, /* special_function */ | |
2033 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2034 | FALSE, /* partial_inplace */ | |
2035 | 0, /* src_mask */ | |
2036 | 0xffff, /* dst_mask */ | |
2037 | FALSE), /* pcrel_offset */ | |
2038 | ||
2039 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2040 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2041 | 16, /* rightshift */ | |
2042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2043 | 16, /* bitsize */ | |
2044 | FALSE, /* pc_relative */ | |
2045 | 0, /* bitpos */ | |
2046 | complain_overflow_dont, /* complain_on_overflow */ | |
2047 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2048 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2049 | FALSE, /* partial_inplace */ | |
2050 | 0, /* src_mask */ | |
2051 | 0xffff, /* dst_mask */ | |
2052 | FALSE), /* pcrel_offset */ | |
2053 | ||
2054 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2055 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2056 | 16, /* rightshift */ | |
2057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 16, /* bitsize */ | |
2059 | FALSE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
2061 | complain_overflow_dont, /* complain_on_overflow */ | |
2062 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2063 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2064 | FALSE, /* partial_inplace */ | |
2065 | 0, /* src_mask */ | |
2066 | 0xffff, /* dst_mask */ | |
2067 | FALSE), /* pcrel_offset */ | |
2068 | ||
2069 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2070 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2071 | 16, /* rightshift */ | |
2072 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 16, /* bitsize */ | |
2074 | FALSE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_dont, /* complain_on_overflow */ | |
2077 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2078 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2079 | FALSE, /* partial_inplace */ | |
2080 | 0, /* src_mask */ | |
2081 | 0xffff, /* dst_mask */ | |
2082 | FALSE), /* pcrel_offset */ | |
2083 | ||
2084 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2085 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2086 | 16, /* rightshift */ | |
2087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2088 | 16, /* bitsize */ | |
2089 | FALSE, /* pc_relative */ | |
2090 | 0, /* bitpos */ | |
2091 | complain_overflow_dont, /* complain_on_overflow */ | |
2092 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2093 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2094 | FALSE, /* partial_inplace */ | |
2095 | 0, /* src_mask */ | |
2096 | 0xffff, /* dst_mask */ | |
2097 | FALSE), /* pcrel_offset */ | |
2098 | ||
5bd4f169 AM |
2099 | /* GNU extension to record C++ vtable hierarchy. */ |
2100 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2101 | 0, /* rightshift */ | |
2102 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2103 | 0, /* bitsize */ | |
b34976b6 | 2104 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2105 | 0, /* bitpos */ |
2106 | complain_overflow_dont, /* complain_on_overflow */ | |
2107 | NULL, /* special_function */ | |
2108 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2109 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2110 | 0, /* src_mask */ |
2111 | 0, /* dst_mask */ | |
b34976b6 | 2112 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2113 | |
2114 | /* GNU extension to record C++ vtable member usage. */ | |
2115 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2116 | 0, /* rightshift */ | |
2117 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2118 | 0, /* bitsize */ | |
b34976b6 | 2119 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2120 | 0, /* bitpos */ |
2121 | complain_overflow_dont, /* complain_on_overflow */ | |
2122 | NULL, /* special_function */ | |
2123 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2124 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2125 | 0, /* src_mask */ |
2126 | 0, /* dst_mask */ | |
b34976b6 | 2127 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2128 | }; |
2129 | ||
2130 | \f | |
2131 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2132 | be done. */ | |
2133 | ||
2134 | static void | |
4ce794b7 | 2135 | ppc_howto_init (void) |
5bd4f169 AM |
2136 | { |
2137 | unsigned int i, type; | |
2138 | ||
2139 | for (i = 0; | |
2140 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2141 | i++) | |
2142 | { | |
2143 | type = ppc64_elf_howto_raw[i].type; | |
2144 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2145 | / sizeof (ppc64_elf_howto_table[0]))); | |
2146 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | static reloc_howto_type * | |
4ce794b7 AM |
2151 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2152 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2153 | { |
411e1bfb | 2154 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2155 | |
2156 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2157 | /* Initialize howto table if needed. */ | |
2158 | ppc_howto_init (); | |
2159 | ||
4ce794b7 | 2160 | switch (code) |
5bd4f169 AM |
2161 | { |
2162 | default: | |
4ce794b7 | 2163 | return NULL; |
5bd4f169 | 2164 | |
411e1bfb AM |
2165 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2166 | break; | |
2167 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2168 | break; | |
2169 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2170 | break; | |
2171 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2172 | break; | |
2173 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2174 | break; | |
2175 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2176 | break; | |
f9c6b907 AM |
2177 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2178 | break; | |
411e1bfb | 2179 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2180 | break; |
f9c6b907 AM |
2181 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2182 | break; | |
411e1bfb | 2183 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2184 | break; |
411e1bfb | 2185 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2186 | break; |
411e1bfb | 2187 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2188 | break; |
411e1bfb | 2189 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2190 | break; |
411e1bfb | 2191 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2192 | break; |
411e1bfb | 2193 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2194 | break; |
411e1bfb | 2195 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2196 | break; |
411e1bfb | 2197 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2198 | break; |
411e1bfb | 2199 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2200 | break; |
411e1bfb | 2201 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2202 | break; |
411e1bfb | 2203 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2204 | break; |
411e1bfb | 2205 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2206 | break; |
411e1bfb | 2207 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2208 | break; |
411e1bfb | 2209 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2210 | break; |
411e1bfb | 2211 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2212 | break; |
411e1bfb | 2213 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2214 | break; |
411e1bfb | 2215 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2216 | break; |
411e1bfb | 2217 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2218 | break; |
411e1bfb | 2219 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2220 | break; |
411e1bfb | 2221 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2222 | break; |
411e1bfb | 2223 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2224 | break; |
411e1bfb | 2225 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2226 | break; |
411e1bfb | 2227 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2228 | break; |
411e1bfb | 2229 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2230 | break; |
411e1bfb | 2231 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2232 | break; |
411e1bfb | 2233 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2234 | break; |
411e1bfb | 2235 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2236 | break; |
411e1bfb | 2237 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2238 | break; |
411e1bfb | 2239 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2240 | break; |
411e1bfb | 2241 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2242 | break; |
411e1bfb | 2243 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2244 | break; |
411e1bfb | 2245 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2246 | break; |
411e1bfb | 2247 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2248 | break; |
411e1bfb | 2249 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2250 | break; |
411e1bfb | 2251 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2252 | break; |
411e1bfb | 2253 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2254 | break; |
411e1bfb | 2255 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2256 | break; |
411e1bfb | 2257 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2258 | break; |
411e1bfb | 2259 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2260 | break; |
411e1bfb | 2261 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2262 | break; |
411e1bfb | 2263 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2264 | break; |
411e1bfb | 2265 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2266 | break; |
411e1bfb | 2267 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2268 | break; |
411e1bfb | 2269 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2270 | break; |
411e1bfb | 2271 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2272 | break; |
411e1bfb | 2273 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2274 | break; |
411e1bfb | 2275 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2276 | break; |
411e1bfb | 2277 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2278 | break; |
411e1bfb | 2279 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2280 | break; |
411e1bfb | 2281 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2282 | break; |
411e1bfb | 2283 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2284 | break; |
411e1bfb | 2285 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2286 | break; |
411e1bfb | 2287 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2288 | break; |
727fc41e AM |
2289 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2290 | break; | |
2291 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2292 | break; | |
411e1bfb | 2293 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2294 | break; |
411e1bfb | 2295 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2296 | break; |
411e1bfb | 2297 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2298 | break; |
411e1bfb | 2299 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2300 | break; |
f9c6b907 AM |
2301 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2302 | break; | |
411e1bfb | 2303 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2304 | break; |
f9c6b907 AM |
2305 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2306 | break; | |
411e1bfb | 2307 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2308 | break; |
411e1bfb AM |
2309 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2310 | break; | |
2311 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2312 | break; | |
2313 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2314 | break; | |
f9c6b907 AM |
2315 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2316 | break; | |
411e1bfb AM |
2317 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2318 | break; | |
f9c6b907 AM |
2319 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2320 | break; | |
411e1bfb AM |
2321 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2322 | break; | |
2323 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2324 | break; | |
2325 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2326 | break; | |
2327 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2328 | break; | |
2329 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2330 | break; | |
2331 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2332 | break; | |
2333 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2334 | break; | |
2335 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2336 | break; | |
2337 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2338 | break; | |
2339 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2340 | break; | |
2341 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2342 | break; | |
2343 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2344 | break; | |
2345 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2346 | break; | |
2347 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2348 | break; | |
2349 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2350 | break; | |
2351 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2352 | break; | |
2353 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2354 | break; | |
2355 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2356 | break; | |
2357 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2358 | break; | |
2359 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2360 | break; | |
2361 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2362 | break; | |
2363 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2364 | break; | |
2365 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2366 | break; | |
2367 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2368 | break; | |
2369 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2370 | break; | |
2371 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2372 | break; | |
2373 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2374 | break; | |
2375 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2376 | break; | |
2377 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2378 | break; | |
25f23106 AM |
2379 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2380 | break; | |
2381 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2382 | break; | |
2383 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2384 | break; | |
2385 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2386 | break; | |
411e1bfb AM |
2387 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2388 | break; | |
2389 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2390 | break; |
2391 | } | |
2392 | ||
4ce794b7 | 2393 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2394 | }; |
2395 | ||
157090f7 AM |
2396 | static reloc_howto_type * |
2397 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2398 | const char *r_name) | |
2399 | { | |
2400 | unsigned int i; | |
2401 | ||
2402 | for (i = 0; | |
2403 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2404 | i++) | |
2405 | if (ppc64_elf_howto_raw[i].name != NULL | |
2406 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2407 | return &ppc64_elf_howto_raw[i]; | |
2408 | ||
2409 | return NULL; | |
2410 | } | |
2411 | ||
5bd4f169 AM |
2412 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2413 | ||
2414 | static void | |
4ce794b7 AM |
2415 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2416 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2417 | { |
65f38f15 AM |
2418 | unsigned int type; |
2419 | ||
ef60b7ff | 2420 | /* Initialize howto table if needed. */ |
5bd4f169 | 2421 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2422 | ppc_howto_init (); |
2423 | ||
65f38f15 | 2424 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2425 | if (type >= (sizeof (ppc64_elf_howto_table) |
2426 | / sizeof (ppc64_elf_howto_table[0]))) | |
2427 | { | |
2428 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2429 | abfd, (int) type); |
2430 | type = R_PPC64_NONE; | |
d0fb9a8d | 2431 | } |
65f38f15 | 2432 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2433 | } |
2434 | ||
04c9666a | 2435 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2436 | |
2437 | static bfd_reloc_status_type | |
4ce794b7 AM |
2438 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2439 | void *data, asection *input_section, | |
2440 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2441 | { |
805fc799 AM |
2442 | /* If this is a relocatable link (output_bfd test tells us), just |
2443 | call the generic function. Any adjustment will be done at final | |
2444 | link time. */ | |
2445 | if (output_bfd != NULL) | |
cedb70c5 | 2446 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2447 | input_section, output_bfd, error_message); |
2448 | ||
2449 | /* Adjust the addend for sign extension of the low 16 bits. | |
2450 | We won't actually be using the low 16 bits, so trashing them | |
2451 | doesn't matter. */ | |
2452 | reloc_entry->addend += 0x8000; | |
2453 | return bfd_reloc_continue; | |
2454 | } | |
5bd4f169 | 2455 | |
2441e016 AM |
2456 | static bfd_reloc_status_type |
2457 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2458 | void *data, asection *input_section, | |
2459 | bfd *output_bfd, char **error_message) | |
2460 | { | |
2461 | if (output_bfd != NULL) | |
2462 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2463 | input_section, output_bfd, error_message); | |
2464 | ||
699733f6 AM |
2465 | if (strcmp (symbol->section->name, ".opd") == 0 |
2466 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2467 | { |
2468 | bfd_vma dest = opd_entry_value (symbol->section, | |
2469 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2470 | NULL, NULL, FALSE); |
2441e016 AM |
2471 | if (dest != (bfd_vma) -1) |
2472 | reloc_entry->addend = dest - (symbol->value | |
2473 | + symbol->section->output_section->vma | |
2474 | + symbol->section->output_offset); | |
2475 | } | |
2476 | return bfd_reloc_continue; | |
2477 | } | |
2478 | ||
805fc799 | 2479 | static bfd_reloc_status_type |
4ce794b7 AM |
2480 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2481 | void *data, asection *input_section, | |
2482 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2483 | { |
2484 | long insn; | |
04c9666a | 2485 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2486 | bfd_size_type octets; |
794e51c0 AM |
2487 | /* Assume 'at' branch hints. */ |
2488 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2489 | |
2490 | /* If this is a relocatable link (output_bfd test tells us), just | |
2491 | call the generic function. Any adjustment will be done at final | |
2492 | link time. */ | |
5bd4f169 | 2493 | if (output_bfd != NULL) |
cedb70c5 | 2494 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2495 | input_section, output_bfd, error_message); |
2496 | ||
2497 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2498 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2499 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2500 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2501 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2502 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2503 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2504 | |
794e51c0 | 2505 | if (is_isa_v2) |
5bd4f169 | 2506 | { |
805fc799 AM |
2507 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2508 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2509 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2510 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2511 | insn |= 0x02 << 21; | |
2512 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2513 | insn |= 0x08 << 21; | |
2514 | else | |
2441e016 | 2515 | goto out; |
5bd4f169 | 2516 | } |
805fc799 AM |
2517 | else |
2518 | { | |
2519 | bfd_vma target = 0; | |
2520 | bfd_vma from; | |
5bd4f169 | 2521 | |
805fc799 AM |
2522 | if (!bfd_is_com_section (symbol->section)) |
2523 | target = symbol->value; | |
2524 | target += symbol->section->output_section->vma; | |
2525 | target += symbol->section->output_offset; | |
2526 | target += reloc_entry->addend; | |
5bd4f169 | 2527 | |
805fc799 AM |
2528 | from = (reloc_entry->address |
2529 | + input_section->output_offset | |
2530 | + input_section->output_section->vma); | |
5bd4f169 | 2531 | |
805fc799 AM |
2532 | /* Invert 'y' bit if not the default. */ |
2533 | if ((bfd_signed_vma) (target - from) < 0) | |
2534 | insn ^= 0x01 << 21; | |
2535 | } | |
4ce794b7 | 2536 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2537 | out: |
2538 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2539 | input_section, output_bfd, error_message); | |
805fc799 | 2540 | } |
5bd4f169 | 2541 | |
805fc799 | 2542 | static bfd_reloc_status_type |
4ce794b7 AM |
2543 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2544 | void *data, asection *input_section, | |
2545 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2546 | { |
2547 | /* If this is a relocatable link (output_bfd test tells us), just | |
2548 | call the generic function. Any adjustment will be done at final | |
2549 | link time. */ | |
2550 | if (output_bfd != NULL) | |
cedb70c5 | 2551 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2552 | input_section, output_bfd, error_message); |
5bd4f169 | 2553 | |
805fc799 AM |
2554 | /* Subtract the symbol section base address. */ |
2555 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2556 | return bfd_reloc_continue; |
2557 | } | |
2558 | ||
805fc799 | 2559 | static bfd_reloc_status_type |
4ce794b7 AM |
2560 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2561 | void *data, asection *input_section, | |
2562 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2563 | { |
2564 | /* If this is a relocatable link (output_bfd test tells us), just | |
2565 | call the generic function. Any adjustment will be done at final | |
2566 | link time. */ | |
2567 | if (output_bfd != NULL) | |
cedb70c5 | 2568 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2569 | input_section, output_bfd, error_message); |
2570 | ||
2571 | /* Subtract the symbol section base address. */ | |
2572 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2573 | ||
2574 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2575 | reloc_entry->addend += 0x8000; | |
2576 | return bfd_reloc_continue; | |
2577 | } | |
2578 | ||
2579 | static bfd_reloc_status_type | |
4ce794b7 AM |
2580 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2581 | void *data, asection *input_section, | |
2582 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2583 | { |
2584 | bfd_vma TOCstart; | |
2585 | ||
2586 | /* If this is a relocatable link (output_bfd test tells us), just | |
2587 | call the generic function. Any adjustment will be done at final | |
2588 | link time. */ | |
2589 | if (output_bfd != NULL) | |
cedb70c5 | 2590 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2591 | input_section, output_bfd, error_message); |
2592 | ||
2593 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2594 | if (TOCstart == 0) | |
1c865ab2 | 2595 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2596 | |
2597 | /* Subtract the TOC base address. */ | |
2598 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2599 | return bfd_reloc_continue; | |
2600 | } | |
2601 | ||
2602 | static bfd_reloc_status_type | |
4ce794b7 AM |
2603 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2604 | void *data, asection *input_section, | |
2605 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2606 | { |
2607 | bfd_vma TOCstart; | |
2608 | ||
2609 | /* If this is a relocatable link (output_bfd test tells us), just | |
2610 | call the generic function. Any adjustment will be done at final | |
2611 | link time. */ | |
2612 | if (output_bfd != NULL) | |
cedb70c5 | 2613 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2614 | input_section, output_bfd, error_message); |
2615 | ||
2616 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2617 | if (TOCstart == 0) | |
1c865ab2 | 2618 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2619 | |
2620 | /* Subtract the TOC base address. */ | |
2621 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2622 | ||
2623 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2624 | reloc_entry->addend += 0x8000; | |
2625 | return bfd_reloc_continue; | |
2626 | } | |
2627 | ||
2628 | static bfd_reloc_status_type | |
4ce794b7 AM |
2629 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2630 | void *data, asection *input_section, | |
2631 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2632 | { |
2633 | bfd_vma TOCstart; | |
2634 | bfd_size_type octets; | |
2635 | ||
2636 | /* If this is a relocatable link (output_bfd test tells us), just | |
2637 | call the generic function. Any adjustment will be done at final | |
2638 | link time. */ | |
2639 | if (output_bfd != NULL) | |
cedb70c5 | 2640 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2641 | input_section, output_bfd, error_message); |
2642 | ||
2643 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2644 | if (TOCstart == 0) | |
1c865ab2 | 2645 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2646 | |
2647 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2648 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2649 | return bfd_reloc_ok; | |
2650 | } | |
2651 | ||
2652 | static bfd_reloc_status_type | |
4ce794b7 AM |
2653 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2654 | void *data, asection *input_section, | |
2655 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2656 | { |
2657 | /* If this is a relocatable link (output_bfd test tells us), just | |
2658 | call the generic function. Any adjustment will be done at final | |
2659 | link time. */ | |
2660 | if (output_bfd != NULL) | |
cedb70c5 | 2661 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2662 | input_section, output_bfd, error_message); |
2663 | ||
2664 | if (error_message != NULL) | |
2665 | { | |
2666 | static char buf[60]; | |
2667 | sprintf (buf, "generic linker can't handle %s", | |
2668 | reloc_entry->howto->name); | |
2669 | *error_message = buf; | |
2670 | } | |
2671 | return bfd_reloc_dangerous; | |
2672 | } | |
2673 | ||
927be08e AM |
2674 | /* Track GOT entries needed for a given symbol. We might need more |
2675 | than one got entry per symbol. */ | |
2676 | struct got_entry | |
2677 | { | |
2678 | struct got_entry *next; | |
2679 | ||
2680 | /* The symbol addend that we'll be placing in the GOT. */ | |
2681 | bfd_vma addend; | |
2682 | ||
2683 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2684 | symbol referenced from different input files. This is to support | |
2685 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2686 | from one input file to another. After partitioning into TOC groups | |
2687 | we merge entries within the group. | |
2688 | ||
2689 | Point to the BFD owning this GOT entry. */ | |
2690 | bfd *owner; | |
2691 | ||
2692 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2693 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2694 | unsigned char tls_type; |
927be08e AM |
2695 | |
2696 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2697 | unsigned char is_indirect; |
927be08e AM |
2698 | |
2699 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2700 | union | |
2701 | { | |
2702 | bfd_signed_vma refcount; | |
2703 | bfd_vma offset; | |
2704 | struct got_entry *ent; | |
2705 | } got; | |
2706 | }; | |
2707 | ||
2708 | /* The same for PLT. */ | |
2709 | struct plt_entry | |
2710 | { | |
2711 | struct plt_entry *next; | |
2712 | ||
2713 | bfd_vma addend; | |
2714 | ||
2715 | union | |
2716 | { | |
2717 | bfd_signed_vma refcount; | |
2718 | bfd_vma offset; | |
2719 | } plt; | |
2720 | }; | |
2721 | ||
e717da7e AM |
2722 | struct ppc64_elf_obj_tdata |
2723 | { | |
2724 | struct elf_obj_tdata elf; | |
2725 | ||
2726 | /* Shortcuts to dynamic linker sections. */ | |
2727 | asection *got; | |
2728 | asection *relgot; | |
2729 | ||
b3fac117 AM |
2730 | /* Used during garbage collection. We attach global symbols defined |
2731 | on removed .opd entries to this section so that the sym is removed. */ | |
2732 | asection *deleted_section; | |
81688140 | 2733 | |
927be08e | 2734 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2735 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2736 | struct got_entry tlsld_got; |
8860955f | 2737 | |
729eabd5 AM |
2738 | union { |
2739 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2740 | Elf_Internal_Rela *relocs; | |
2741 | ||
2742 | /* Section contents. */ | |
2743 | bfd_byte *contents; | |
2744 | } opd; | |
d77c8a4b AM |
2745 | |
2746 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2747 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2748 | unsigned int has_small_toc_reloc : 1; |
2749 | ||
560c8763 AM |
2750 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2751 | instruction not one we handle. */ | |
2752 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2753 | }; |
2754 | ||
2755 | #define ppc64_elf_tdata(bfd) \ | |
2756 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2757 | ||
2758 | #define ppc64_tlsld_got(bfd) \ | |
2759 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2760 | ||
0c8d6e5c AM |
2761 | #define is_ppc64_elf(bfd) \ |
2762 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2763 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2764 | |
e717da7e AM |
2765 | /* Override the generic function because we store some extras. */ |
2766 | ||
2767 | static bfd_boolean | |
2768 | ppc64_elf_mkobject (bfd *abfd) | |
2769 | { | |
0ffa91dd | 2770 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2771 | PPC64_ELF_DATA); |
e717da7e AM |
2772 | } |
2773 | ||
feee612b AM |
2774 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2775 | default is 32 bit. */ | |
2776 | ||
b34976b6 | 2777 | static bfd_boolean |
4ce794b7 | 2778 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2779 | { |
2780 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2781 | { | |
2782 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2783 | ||
2784 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2785 | { | |
2786 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2787 | abfd->arch_info = abfd->arch_info->next; | |
2788 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2789 | } | |
2790 | } | |
b34976b6 | 2791 | return TRUE; |
feee612b AM |
2792 | } |
2793 | ||
d37c89e5 AM |
2794 | /* Support for core dump NOTE sections. */ |
2795 | ||
2796 | static bfd_boolean | |
2797 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2798 | { | |
eea6121a | 2799 | size_t offset, size; |
d37c89e5 AM |
2800 | |
2801 | if (note->descsz != 504) | |
2802 | return FALSE; | |
2803 | ||
2804 | /* pr_cursig */ | |
228e534f | 2805 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2806 | |
2807 | /* pr_pid */ | |
228e534f | 2808 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2809 | |
2810 | /* pr_reg */ | |
2811 | offset = 112; | |
eea6121a | 2812 | size = 384; |
d37c89e5 AM |
2813 | |
2814 | /* Make a ".reg/999" section. */ | |
2815 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2816 | size, note->descpos + offset); |
d37c89e5 AM |
2817 | } |
2818 | ||
2819 | static bfd_boolean | |
2820 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2821 | { | |
2822 | if (note->descsz != 136) | |
2823 | return FALSE; | |
2824 | ||
228e534f | 2825 | elf_tdata (abfd)->core->pid |
bc989cdc | 2826 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2827 | elf_tdata (abfd)->core->program |
d37c89e5 | 2828 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2829 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2830 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2831 | ||
2832 | return TRUE; | |
2833 | } | |
2834 | ||
183e98be AM |
2835 | static char * |
2836 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2837 | ...) | |
2838 | { | |
2839 | switch (note_type) | |
2840 | { | |
2841 | default: | |
2842 | return NULL; | |
2843 | ||
2844 | case NT_PRPSINFO: | |
2845 | { | |
2846 | char data[136]; | |
2847 | va_list ap; | |
2848 | ||
2849 | va_start (ap, note_type); | |
75cd47ed | 2850 | memset (data, 0, sizeof (data)); |
183e98be AM |
2851 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2852 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2853 | va_end (ap); | |
2854 | return elfcore_write_note (abfd, buf, bufsiz, | |
2855 | "CORE", note_type, data, sizeof (data)); | |
2856 | } | |
2857 | ||
2858 | case NT_PRSTATUS: | |
2859 | { | |
2860 | char data[504]; | |
2861 | va_list ap; | |
2862 | long pid; | |
2863 | int cursig; | |
2864 | const void *greg; | |
2865 | ||
2866 | va_start (ap, note_type); | |
2867 | memset (data, 0, 112); | |
2868 | pid = va_arg (ap, long); | |
2869 | bfd_put_32 (abfd, pid, data + 32); | |
2870 | cursig = va_arg (ap, int); | |
2871 | bfd_put_16 (abfd, cursig, data + 12); | |
2872 | greg = va_arg (ap, const void *); | |
2873 | memcpy (data + 112, greg, 384); | |
2874 | memset (data + 496, 0, 8); | |
2875 | va_end (ap); | |
2876 | return elfcore_write_note (abfd, buf, bufsiz, | |
2877 | "CORE", note_type, data, sizeof (data)); | |
2878 | } | |
2879 | } | |
2880 | } | |
2881 | ||
5d35169e AM |
2882 | /* Add extra PPC sections. */ |
2883 | ||
b35d266b | 2884 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2885 | { |
0112cd26 NC |
2886 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2887 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2888 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2889 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2890 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2891 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2892 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2893 | }; |
2894 | ||
7c8fe5c4 AM |
2895 | enum _ppc64_sec_type { |
2896 | sec_normal = 0, | |
2897 | sec_opd = 1, | |
2898 | sec_toc = 2 | |
2899 | }; | |
2900 | ||
f0abc2a1 AM |
2901 | struct _ppc64_elf_section_data |
2902 | { | |
2903 | struct bfd_elf_section_data elf; | |
411e1bfb | 2904 | |
f0abc2a1 AM |
2905 | union |
2906 | { | |
74f0fb50 AM |
2907 | /* An array with one entry for each opd function descriptor. */ |
2908 | struct _opd_sec_data | |
2909 | { | |
2910 | /* Points to the function code section for local opd entries. */ | |
2911 | asection **func_sec; | |
2912 | ||
2913 | /* After editing .opd, adjust references to opd local syms. */ | |
2914 | long *adjust; | |
2915 | } opd; | |
7c8fe5c4 | 2916 | |
3a71aa26 AM |
2917 | /* An array for toc sections, indexed by offset/8. */ |
2918 | struct _toc_sec_data | |
2919 | { | |
2920 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2921 | unsigned *symndx; | |
2922 | ||
2923 | /* And the relocation addend. */ | |
2924 | bfd_vma *add; | |
2925 | } toc; | |
7c8fe5c4 AM |
2926 | } u; |
2927 | ||
2928 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2929 | |
7c8fe5c4 AM |
2930 | /* Flag set when small branches are detected. Used to |
2931 | select suitable defaults for the stub group size. */ | |
2932 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2933 | }; |
2934 | ||
2935 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2936 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2937 | |
2938 | static bfd_boolean | |
4ce794b7 | 2939 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2940 | { |
f592407e AM |
2941 | if (!sec->used_by_bfd) |
2942 | { | |
2943 | struct _ppc64_elf_section_data *sdata; | |
2944 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2945 | |
f592407e AM |
2946 | sdata = bfd_zalloc (abfd, amt); |
2947 | if (sdata == NULL) | |
2948 | return FALSE; | |
2949 | sec->used_by_bfd = sdata; | |
2950 | } | |
f0abc2a1 AM |
2951 | |
2952 | return _bfd_elf_new_section_hook (abfd, sec); | |
2953 | } | |
4025353c | 2954 | |
74f0fb50 | 2955 | static struct _opd_sec_data * |
4025353c AM |
2956 | get_opd_info (asection * sec) |
2957 | { | |
2958 | if (sec != NULL | |
2959 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2960 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2961 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2962 | return NULL; |
2963 | } | |
ee67d69a AM |
2964 | |
2965 | static inline int | |
2966 | abiversion (bfd *abfd) | |
2967 | { | |
2968 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
2969 | } | |
2970 | ||
2971 | static inline void | |
2972 | set_abiversion (bfd *abfd, int ver) | |
2973 | { | |
2974 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
2975 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
2976 | } | |
90e3cdf2 JJ |
2977 | \f |
2978 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2979 | static bfd_boolean synthetic_relocatable; |
2980 | ||
699733f6 | 2981 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2982 | |
2983 | static int | |
2984 | compare_symbols (const void *ap, const void *bp) | |
2985 | { | |
2986 | const asymbol *a = * (const asymbol **) ap; | |
2987 | const asymbol *b = * (const asymbol **) bp; | |
2988 | ||
699733f6 AM |
2989 | /* Section symbols first. */ |
2990 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2991 | return -1; |
699733f6 | 2992 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2993 | return 1; |
2994 | ||
699733f6 | 2995 | /* then .opd symbols. */ |
ffcfec52 AM |
2996 | if (strcmp (a->section->name, ".opd") == 0 |
2997 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2998 | return -1; |
ffcfec52 AM |
2999 | if (strcmp (a->section->name, ".opd") != 0 |
3000 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3001 | return 1; |
3002 | ||
699733f6 | 3003 | /* then other code symbols. */ |
90e3cdf2 JJ |
3004 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3005 | == (SEC_CODE | SEC_ALLOC) | |
3006 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3007 | != (SEC_CODE | SEC_ALLOC)) | |
3008 | return -1; | |
3009 | ||
3010 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3011 | != (SEC_CODE | SEC_ALLOC) | |
3012 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3013 | == (SEC_CODE | SEC_ALLOC)) | |
3014 | return 1; | |
3015 | ||
3016 | if (synthetic_relocatable) | |
3017 | { | |
3018 | if (a->section->id < b->section->id) | |
3019 | return -1; | |
3020 | ||
3021 | if (a->section->id > b->section->id) | |
3022 | return 1; | |
3023 | } | |
3024 | ||
3025 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3026 | return -1; | |
3027 | ||
3028 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3029 | return 1; | |
3030 | ||
4d35a0aa AM |
3031 | /* For syms with the same value, prefer strong dynamic global function |
3032 | syms over other syms. */ | |
3033 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3034 | return -1; | |
3035 | ||
3036 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3037 | return 1; | |
3038 | ||
3039 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3040 | return -1; | |
3041 | ||
3042 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3043 | return 1; | |
3044 | ||
3045 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3046 | return -1; | |
3047 | ||
3048 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3049 | return 1; | |
3050 | ||
3051 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3052 | return -1; | |
3053 | ||
3054 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3055 | return 1; | |
3056 | ||
90e3cdf2 JJ |
3057 | return 0; |
3058 | } | |
3059 | ||
699733f6 | 3060 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3061 | |
699733f6 AM |
3062 | static asymbol * |
3063 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 3064 | { |
699733f6 | 3065 | long mid; |
90e3cdf2 | 3066 | |
699733f6 AM |
3067 | if (id == -1) |
3068 | { | |
3069 | while (lo < hi) | |
3070 | { | |
3071 | mid = (lo + hi) >> 1; | |
3072 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3073 | lo = mid + 1; | |
3074 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3075 | hi = mid; | |
3076 | else | |
3077 | return syms[mid]; | |
3078 | } | |
3079 | } | |
3080 | else | |
3081 | { | |
3082 | while (lo < hi) | |
3083 | { | |
3084 | mid = (lo + hi) >> 1; | |
3085 | if (syms[mid]->section->id < id) | |
3086 | lo = mid + 1; | |
3087 | else if (syms[mid]->section->id > id) | |
3088 | hi = mid; | |
3089 | else if (syms[mid]->value < value) | |
3090 | lo = mid + 1; | |
3091 | else if (syms[mid]->value > value) | |
3092 | hi = mid; | |
3093 | else | |
3094 | return syms[mid]; | |
3095 | } | |
3096 | } | |
3097 | return NULL; | |
90e3cdf2 JJ |
3098 | } |
3099 | ||
468392fb AM |
3100 | static bfd_boolean |
3101 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3102 | { | |
3103 | bfd_vma vma = *(bfd_vma *) ptr; | |
3104 | return ((section->flags & SEC_ALLOC) != 0 | |
3105 | && section->vma <= vma | |
3106 | && vma < section->vma + section->size); | |
3107 | } | |
3108 | ||
699733f6 | 3109 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 3110 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
3111 | |
3112 | static long | |
a7535cf3 AM |
3113 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3114 | long static_count, asymbol **static_syms, | |
3115 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3116 | asymbol **ret) |
90e3cdf2 JJ |
3117 | { |
3118 | asymbol *s; | |
699733f6 AM |
3119 | long i; |
3120 | long count; | |
90e3cdf2 | 3121 | char *names; |
a7535cf3 | 3122 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3123 | asection *opd = NULL; |
90e3cdf2 | 3124 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3125 | asymbol **syms; |
ee67d69a | 3126 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3127 | |
3128 | *ret = NULL; | |
3129 | ||
ee67d69a AM |
3130 | if (abi < 2) |
3131 | { | |
3132 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3133 | if (opd == NULL && abi == 1) | |
3134 | return 0; | |
3135 | } | |
90e3cdf2 | 3136 | |
a7535cf3 | 3137 | symcount = static_count; |
c9727e01 | 3138 | if (!relocatable) |
a7535cf3 | 3139 | symcount += dyn_count; |
90e3cdf2 | 3140 | if (symcount == 0) |
c9727e01 | 3141 | return 0; |
90e3cdf2 | 3142 | |
a7535cf3 AM |
3143 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3144 | if (syms == NULL) | |
7356fed5 | 3145 | return -1; |
a7535cf3 AM |
3146 | |
3147 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3148 | { | |
3149 | /* Use both symbol tables. */ | |
3150 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3151 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3152 | } | |
3153 | else if (!relocatable && static_count == 0) | |
3154 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3155 | else | |
3156 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3157 | ||
90e3cdf2 | 3158 | synthetic_relocatable = relocatable; |
595da8c5 | 3159 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3160 | |
c9727e01 AM |
3161 | if (!relocatable && symcount > 1) |
3162 | { | |
3163 | long j; | |
3164 | /* Trim duplicate syms, since we may have merged the normal and | |
3165 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3166 | different values, so trim any with the same value. */ |
c9727e01 AM |
3167 | for (i = 1, j = 1; i < symcount; ++i) |
3168 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3169 | != syms[i]->value + syms[i]->section->vma) | |
3170 | syms[j++] = syms[i]; | |
3171 | symcount = j; | |
3172 | } | |
3173 | ||
699733f6 | 3174 | i = 0; |
ffcfec52 | 3175 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3176 | ++i; |
3177 | codesecsym = i; | |
90e3cdf2 | 3178 | |
699733f6 AM |
3179 | for (; i < symcount; ++i) |
3180 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3181 | != (SEC_CODE | SEC_ALLOC)) | |
3182 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3183 | break; | |
3184 | codesecsymend = i; | |
90e3cdf2 | 3185 | |
699733f6 AM |
3186 | for (; i < symcount; ++i) |
3187 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3188 | break; | |
3189 | secsymend = i; | |
90e3cdf2 | 3190 | |
699733f6 | 3191 | for (; i < symcount; ++i) |
ffcfec52 | 3192 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3193 | break; |
3194 | opdsymend = i; | |
90e3cdf2 | 3195 | |
699733f6 AM |
3196 | for (; i < symcount; ++i) |
3197 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3198 | != (SEC_CODE | SEC_ALLOC)) | |
3199 | break; | |
3200 | symcount = i; | |
3201 | ||
c9727e01 | 3202 | count = 0; |
90e3cdf2 | 3203 | |
699733f6 | 3204 | if (relocatable) |
90e3cdf2 | 3205 | { |
699733f6 AM |
3206 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3207 | arelent *r; | |
3208 | size_t size; | |
3209 | long relcount; | |
90e3cdf2 | 3210 | |
468392fb AM |
3211 | if (opdsymend == secsymend) |
3212 | goto done; | |
3213 | ||
699733f6 | 3214 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3215 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3216 | if (relcount == 0) |
c9727e01 | 3217 | goto done; |
90e3cdf2 | 3218 | |
7356fed5 AM |
3219 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3220 | { | |
3221 | count = -1; | |
3222 | goto done; | |
3223 | } | |
3224 | ||
699733f6 | 3225 | size = 0; |
595da8c5 | 3226 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3227 | { |
3228 | asymbol *sym; | |
90e3cdf2 | 3229 | |
595da8c5 | 3230 | while (r < opd->relocation + relcount |
699733f6 AM |
3231 | && r->address < syms[i]->value + opd->vma) |
3232 | ++r; | |
90e3cdf2 | 3233 | |
595da8c5 | 3234 | if (r == opd->relocation + relcount) |
699733f6 | 3235 | break; |
90e3cdf2 | 3236 | |
699733f6 AM |
3237 | if (r->address != syms[i]->value + opd->vma) |
3238 | continue; | |
90e3cdf2 | 3239 | |
699733f6 AM |
3240 | if (r->howto->type != R_PPC64_ADDR64) |
3241 | continue; | |
90e3cdf2 | 3242 | |
699733f6 AM |
3243 | sym = *r->sym_ptr_ptr; |
3244 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3245 | sym->section->id, sym->value + r->addend)) | |
3246 | { | |
3247 | ++count; | |
3248 | size += sizeof (asymbol); | |
3249 | size += strlen (syms[i]->name) + 2; | |
3250 | } | |
3251 | } | |
90e3cdf2 | 3252 | |
699733f6 AM |
3253 | s = *ret = bfd_malloc (size); |
3254 | if (s == NULL) | |
3255 | { | |
7356fed5 | 3256 | count = -1; |
c9727e01 | 3257 | goto done; |
699733f6 | 3258 | } |
90e3cdf2 | 3259 | |
699733f6 | 3260 | names = (char *) (s + count); |
90e3cdf2 | 3261 | |
595da8c5 | 3262 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3263 | { |
699733f6 | 3264 | asymbol *sym; |
90e3cdf2 | 3265 | |
595da8c5 | 3266 | while (r < opd->relocation + relcount |
699733f6 AM |
3267 | && r->address < syms[i]->value + opd->vma) |
3268 | ++r; | |
90e3cdf2 | 3269 | |
595da8c5 | 3270 | if (r == opd->relocation + relcount) |
699733f6 AM |
3271 | break; |
3272 | ||
3273 | if (r->address != syms[i]->value + opd->vma) | |
3274 | continue; | |
3275 | ||
3276 | if (r->howto->type != R_PPC64_ADDR64) | |
3277 | continue; | |
90e3cdf2 | 3278 | |
699733f6 AM |
3279 | sym = *r->sym_ptr_ptr; |
3280 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3281 | sym->section->id, sym->value + r->addend)) | |
3282 | { | |
3283 | size_t len; | |
3284 | ||
3285 | *s = *syms[i]; | |
6ba2a415 | 3286 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3287 | s->section = sym->section; |
3288 | s->value = sym->value + r->addend; | |
3289 | s->name = names; | |
3290 | *names++ = '.'; | |
3291 | len = strlen (syms[i]->name); | |
3292 | memcpy (names, syms[i]->name, len + 1); | |
3293 | names += len + 1; | |
6f610d07 UW |
3294 | /* Have udata.p point back to the original symbol this |
3295 | synthetic symbol was derived from. */ | |
3296 | s->udata.p = syms[i]; | |
699733f6 AM |
3297 | s++; |
3298 | } | |
3299 | } | |
3300 | } | |
3301 | else | |
90e3cdf2 | 3302 | { |
468392fb | 3303 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3304 | bfd_byte *contents = NULL; |
699733f6 | 3305 | size_t size; |
468392fb AM |
3306 | long plt_count = 0; |
3307 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3308 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3309 | arelent *p; | |
90e3cdf2 | 3310 | |
ee67d69a | 3311 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3312 | { |
ee67d69a | 3313 | free_contents_and_exit: |
699733f6 | 3314 | if (contents) |
ee67d69a | 3315 | free (contents); |
7356fed5 | 3316 | count = -1; |
c9727e01 | 3317 | goto done; |
699733f6 | 3318 | } |
90e3cdf2 | 3319 | |
699733f6 AM |
3320 | size = 0; |
3321 | for (i = secsymend; i < opdsymend; ++i) | |
3322 | { | |
3323 | bfd_vma ent; | |
90e3cdf2 | 3324 | |
5ef11c02 AM |
3325 | /* Ignore bogus symbols. */ |
3326 | if (syms[i]->value > opd->size - 8) | |
3327 | continue; | |
3328 | ||
699733f6 AM |
3329 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3330 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3331 | { | |
3332 | ++count; | |
3333 | size += sizeof (asymbol); | |
3334 | size += strlen (syms[i]->name) + 2; | |
3335 | } | |
3336 | } | |
90e3cdf2 | 3337 | |
468392fb | 3338 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3339 | if (dyn_count != 0 |
3340 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3341 | { |
3342 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3343 | size_t extdynsize; | |
3344 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3345 | ||
3346 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3347 | goto free_contents_and_exit; | |
3348 | ||
3349 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3350 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3351 | ||
3352 | extdyn = dynbuf; | |
3353 | extdynend = extdyn + dynamic->size; | |
3354 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3355 | { | |
3356 | Elf_Internal_Dyn dyn; | |
3357 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3358 | ||
3359 | if (dyn.d_tag == DT_NULL) | |
3360 | break; | |
3361 | ||
3362 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3363 | { | |
b9e5796b AM |
3364 | /* The first glink stub starts at offset 32; see |
3365 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3366 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3367 | /* The .glink section usually does not survive the final |
3368 | link; search for the section (usually .text) where the | |
3369 | glink stubs now reside. */ | |
3370 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3371 | &glink_vma); | |
3372 | break; | |
3373 | } | |
3374 | } | |
3375 | ||
3376 | free (dynbuf); | |
3377 | } | |
3378 | ||
3379 | if (glink != NULL) | |
3380 | { | |
3381 | /* Determine __glink trampoline by reading the relative branch | |
3382 | from the first glink stub. */ | |
3383 | bfd_byte buf[4]; | |
b9e5796b AM |
3384 | unsigned int off = 0; |
3385 | ||
3386 | while (bfd_get_section_contents (abfd, glink, buf, | |
3387 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3388 | { |
3389 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3390 | insn ^= B_DOT; | |
3391 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3392 | { |
3393 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3394 | break; | |
3395 | } | |
3396 | off += 4; | |
3397 | if (off > 4) | |
3398 | break; | |
468392fb AM |
3399 | } |
3400 | ||
3401 | if (resolv_vma) | |
3402 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3403 | |
066ee829 AM |
3404 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3405 | if (relplt != NULL) | |
3406 | { | |
3407 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3408 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3409 | goto free_contents_and_exit; | |
68ffbac6 | 3410 | |
066ee829 AM |
3411 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3412 | size += plt_count * sizeof (asymbol); | |
468392fb | 3413 | |
066ee829 AM |
3414 | p = relplt->relocation; |
3415 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3416 | { |
3417 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3418 | if (p->addend != 0) | |
3419 | size += sizeof ("+0x") - 1 + 16; | |
3420 | } | |
066ee829 | 3421 | } |
468392fb AM |
3422 | } |
3423 | ||
699733f6 AM |
3424 | s = *ret = bfd_malloc (size); |
3425 | if (s == NULL) | |
7356fed5 | 3426 | goto free_contents_and_exit; |
90e3cdf2 | 3427 | |
468392fb | 3428 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3429 | |
699733f6 | 3430 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3431 | { |
699733f6 | 3432 | bfd_vma ent; |
90e3cdf2 | 3433 | |
5ef11c02 AM |
3434 | if (syms[i]->value > opd->size - 8) |
3435 | continue; | |
3436 | ||
699733f6 AM |
3437 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3438 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3439 | { |
c9727e01 | 3440 | long lo, hi; |
699733f6 | 3441 | size_t len; |
c9727e01 | 3442 | asection *sec = abfd->sections; |
90e3cdf2 | 3443 | |
699733f6 AM |
3444 | *s = *syms[i]; |
3445 | lo = codesecsym; | |
3446 | hi = codesecsymend; | |
3447 | while (lo < hi) | |
3448 | { | |
c9727e01 | 3449 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3450 | if (syms[mid]->section->vma < ent) |
3451 | lo = mid + 1; | |
3452 | else if (syms[mid]->section->vma > ent) | |
3453 | hi = mid; | |
3454 | else | |
c9727e01 AM |
3455 | { |
3456 | sec = syms[mid]->section; | |
3457 | break; | |
3458 | } | |
699733f6 AM |
3459 | } |
3460 | ||
c9727e01 | 3461 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3462 | sec = syms[lo - 1]->section; |
699733f6 AM |
3463 | |
3464 | for (; sec != NULL; sec = sec->next) | |
3465 | { | |
3466 | if (sec->vma > ent) | |
3467 | break; | |
63524580 JK |
3468 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3469 | info file. */ | |
3470 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3471 | break; |
3472 | if ((sec->flags & SEC_CODE) != 0) | |
3473 | s->section = sec; | |
3474 | } | |
6ba2a415 | 3475 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3476 | s->value = ent - s->section->vma; |
3477 | s->name = names; | |
3478 | *names++ = '.'; | |
3479 | len = strlen (syms[i]->name); | |
3480 | memcpy (names, syms[i]->name, len + 1); | |
3481 | names += len + 1; | |
6f610d07 UW |
3482 | /* Have udata.p point back to the original symbol this |
3483 | synthetic symbol was derived from. */ | |
3484 | s->udata.p = syms[i]; | |
699733f6 | 3485 | s++; |
90e3cdf2 | 3486 | } |
90e3cdf2 | 3487 | } |
699733f6 | 3488 | free (contents); |
468392fb AM |
3489 | |
3490 | if (glink != NULL && relplt != NULL) | |
3491 | { | |
3492 | if (resolv_vma) | |
3493 | { | |
3494 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3495 | memset (s, 0, sizeof *s); |
468392fb | 3496 | s->the_bfd = abfd; |
6ba2a415 | 3497 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3498 | s->section = glink; |
3499 | s->value = resolv_vma - glink->vma; | |
3500 | s->name = names; | |
3501 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3502 | names += sizeof ("__glink_PLTresolve"); | |
3503 | s++; | |
3504 | count++; | |
3505 | } | |
3506 | ||
3507 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3508 | stub rather than on the glink branch table entry. The | |
3509 | objdump disassembler would then use a sensible symbol | |
3510 | name on plt calls. The difficulty in doing so is | |
3511 | a) finding the stubs, and, | |
3512 | b) matching stubs against plt entries, and, | |
3513 | c) there can be multiple stubs for a given plt entry. | |
3514 | ||
3515 | Solving (a) could be done by code scanning, but older | |
3516 | ppc64 binaries used different stubs to current code. | |
3517 | (b) is the tricky one since you need to known the toc | |
3518 | pointer for at least one function that uses a pic stub to | |
3519 | be able to calculate the plt address referenced. | |
3520 | (c) means gdb would need to set multiple breakpoints (or | |
3521 | find the glink branch itself) when setting breakpoints | |
3522 | for pending shared library loads. */ | |
3523 | p = relplt->relocation; | |
3524 | for (i = 0; i < plt_count; i++, p++) | |
3525 | { | |
3526 | size_t len; | |
3527 | ||
3528 | *s = **p->sym_ptr_ptr; | |
3529 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3530 | we are defining a symbol, ensure one of them is set. */ | |
3531 | if ((s->flags & BSF_LOCAL) == 0) | |
3532 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3533 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3534 | s->section = glink; |
3535 | s->value = glink_vma - glink->vma; | |
3536 | s->name = names; | |
3537 | s->udata.p = NULL; | |
3538 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3539 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3540 | names += len; | |
e054468f AM |
3541 | if (p->addend != 0) |
3542 | { | |
3543 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3544 | names += sizeof ("+0x") - 1; | |
3545 | bfd_sprintf_vma (abfd, names, p->addend); | |
3546 | names += strlen (names); | |
3547 | } | |
468392fb AM |
3548 | memcpy (names, "@plt", sizeof ("@plt")); |
3549 | names += sizeof ("@plt"); | |
3550 | s++; | |
b9e5796b AM |
3551 | if (abi < 2) |
3552 | { | |
3553 | glink_vma += 8; | |
3554 | if (i >= 0x8000) | |
3555 | glink_vma += 4; | |
3556 | } | |
3557 | else | |
468392fb AM |
3558 | glink_vma += 4; |
3559 | } | |
3560 | count += plt_count; | |
3561 | } | |
90e3cdf2 JJ |
3562 | } |
3563 | ||
c9727e01 | 3564 | done: |
a7535cf3 | 3565 | free (syms); |
90e3cdf2 JJ |
3566 | return count; |
3567 | } | |
5bd4f169 | 3568 | \f |
65f38f15 AM |
3569 | /* The following functions are specific to the ELF linker, while |
3570 | functions above are used generally. Those named ppc64_elf_* are | |
3571 | called by the main ELF linker code. They appear in this file more | |
3572 | or less in the order in which they are called. eg. | |
3573 | ppc64_elf_check_relocs is called early in the link process, | |
3574 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3575 | called. |
3576 | ||
3577 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3578 | functions have both a function code symbol and a function descriptor | |
3579 | symbol. A call to foo in a relocatable object file looks like: | |
3580 | ||
3581 | . .text | |
3582 | . x: | |
3583 | . bl .foo | |
3584 | . nop | |
3585 | ||
3586 | The function definition in another object file might be: | |
3587 | ||
3588 | . .section .opd | |
3589 | . foo: .quad .foo | |
3590 | . .quad .TOC.@tocbase | |
3591 | . .quad 0 | |
3592 | . | |
3593 | . .text | |
3594 | . .foo: blr | |
3595 | ||
3596 | When the linker resolves the call during a static link, the branch | |
3597 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3598 | If the function definition is in a shared library, things are a little | |
3599 | different: The call goes via a plt call stub, the opd information gets | |
3600 | copied to the plt, and the linker patches the nop. | |
3601 | ||
3602 | . x: | |
3603 | . bl .foo_stub | |
3604 | . ld 2,40(1) | |
3605 | . | |
3606 | . | |
3607 | . .foo_stub: | |
71a39c98 AM |
3608 | . std 2,40(1) # in practice, the call stub |
3609 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3610 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3611 | . ld 12,0(11) | |
3612 | . ld 2,8(11) | |
3613 | . mtctr 12 | |
3614 | . ld 11,16(11) | |
e86ce104 AM |
3615 | . bctr |
3616 | . | |
3617 | . .section .plt | |
3618 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3619 | ||
3620 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3621 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3622 | copying. | |
3623 | ||
3624 | What are the difficulties here? Well, firstly, the relocations | |
3625 | examined by the linker in check_relocs are against the function code | |
3626 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3627 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3628 | to carefully copy dynamic link information from one symbol to the other. | |
3629 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3630 | symbol as is normal for most other backends. We need foo dynamic | |
3631 | instead, at least for an application final link. However, when | |
3632 | creating a shared library containing foo, we need to have both symbols | |
3633 | dynamic so that references to .foo are satisfied during the early | |
3634 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3635 | definition from some other object, eg. a static library. |
3636 | ||
3637 | Update: As of August 2004, we support a new convention. Function | |
3638 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3639 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3640 | |
1d483afe | 3641 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3642 | selects those that must be copied when linking a shared library, |
3643 | even when the symbol is local. */ | |
65f38f15 | 3644 | |
1d483afe AM |
3645 | static int |
3646 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3647 | enum elf_ppc64_reloc_type r_type) | |
3648 | { | |
3649 | switch (r_type) | |
3650 | { | |
3651 | default: | |
3652 | return 1; | |
3653 | ||
3654 | case R_PPC64_REL32: | |
3655 | case R_PPC64_REL64: | |
3656 | case R_PPC64_REL30: | |
3657 | return 0; | |
3658 | ||
3659 | case R_PPC64_TPREL16: | |
3660 | case R_PPC64_TPREL16_LO: | |
3661 | case R_PPC64_TPREL16_HI: | |
3662 | case R_PPC64_TPREL16_HA: | |
3663 | case R_PPC64_TPREL16_DS: | |
3664 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3665 | case R_PPC64_TPREL16_HIGH: |
3666 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3667 | case R_PPC64_TPREL16_HIGHER: |
3668 | case R_PPC64_TPREL16_HIGHERA: | |
3669 | case R_PPC64_TPREL16_HIGHEST: | |
3670 | case R_PPC64_TPREL16_HIGHESTA: | |
3671 | case R_PPC64_TPREL64: | |
3672 | return !info->executable; | |
3673 | } | |
3674 | } | |
65f38f15 | 3675 | |
f4656909 AM |
3676 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3677 | copying dynamic variables from a shared lib into an app's dynbss | |
3678 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3679 | shared lib. With code that gcc generates, it's vital that this be |
3680 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3681 | the address of a function descriptor, which resides in the .opd | |
3682 | section. gcc uses the descriptor directly rather than going via the | |
3683 | GOT as some other ABI's do, which means that initialized function | |
3684 | pointers must reference the descriptor. Thus, a function pointer | |
3685 | initialized to the address of a function in a shared library will | |
3686 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3687 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3688 | presents a problem as a plt entry for that function is also |
3689 | initialized from the function descriptor symbol and the copy reloc | |
3690 | may not be initialized first. */ | |
a23b6845 | 3691 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3692 | |
721956f4 | 3693 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3694 | string. */ |
3695 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3696 | |
3697 | /* Linker stubs. | |
3698 | ppc_stub_long_branch: | |
3699 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3700 | destination, but a 24 bit branch in a stub section will reach. | |
3701 | . b dest | |
3702 | ||
3703 | ppc_stub_plt_branch: | |
3704 | Similar to the above, but a 24 bit branch in the stub section won't | |
3705 | reach its destination. | |
71a39c98 AM |
3706 | . addis %r11,%r2,xxx@toc@ha |
3707 | . ld %r12,xxx@toc@l(%r11) | |
3708 | . mtctr %r12 | |
721956f4 AM |
3709 | . bctr |
3710 | ||
3711 | ppc_stub_plt_call: | |
2c66dc6c AM |
3712 | Used to call a function in a shared library. If it so happens that |
3713 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3714 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3715 | . std %r2,40(%r1) |
71a39c98 AM |
3716 | . addis %r11,%r2,xxx@toc@ha |
3717 | . ld %r12,xxx+0@toc@l(%r11) | |
3718 | . mtctr %r12 | |
3719 | . ld %r2,xxx+8@toc@l(%r11) | |
3720 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3721 | . bctr |
ad8e1ba5 AM |
3722 | |
3723 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3724 | code to adjust the value and save r2 to support multiple toc sections. | |
3725 | A ppc_stub_long_branch with an r2 offset looks like: | |
3726 | . std %r2,40(%r1) | |
3727 | . addis %r2,%r2,off@ha | |
3728 | . addi %r2,%r2,off@l | |
3729 | . b dest | |
3730 | ||
3731 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3732 | . std %r2,40(%r1) | |
71a39c98 AM |
3733 | . addis %r11,%r2,xxx@toc@ha |
3734 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3735 | . addis %r2,%r2,off@ha |
3736 | . addi %r2,%r2,off@l | |
71a39c98 | 3737 | . mtctr %r12 |
ad8e1ba5 | 3738 | . bctr |
ac2df442 AM |
3739 | |
3740 | In cases where the "addis" instruction would add zero, the "addis" is | |
3741 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3742 | */ |
3743 | ||
3744 | enum ppc_stub_type { | |
3745 | ppc_stub_none, | |
3746 | ppc_stub_long_branch, | |
ad8e1ba5 | 3747 | ppc_stub_long_branch_r2off, |
721956f4 | 3748 | ppc_stub_plt_branch, |
ad8e1ba5 | 3749 | ppc_stub_plt_branch_r2off, |
794e51c0 AM |
3750 | ppc_stub_plt_call, |
3751 | ppc_stub_plt_call_r2save | |
721956f4 AM |
3752 | }; |
3753 | ||
3754 | struct ppc_stub_hash_entry { | |
3755 | ||
3756 | /* Base hash table entry structure. */ | |
3757 | struct bfd_hash_entry root; | |
3758 | ||
ad8e1ba5 AM |
3759 | enum ppc_stub_type stub_type; |
3760 | ||
721956f4 AM |
3761 | /* The stub section. */ |
3762 | asection *stub_sec; | |
3763 | ||
3764 | /* Offset within stub_sec of the beginning of this stub. */ | |
3765 | bfd_vma stub_offset; | |
3766 | ||
3767 | /* Given the symbol's value and its section we can determine its final | |
3768 | value when building the stubs (so the stub knows where to jump. */ | |
3769 | bfd_vma target_value; | |
3770 | asection *target_section; | |
3771 | ||
721956f4 AM |
3772 | /* The symbol table entry, if any, that this was derived from. */ |
3773 | struct ppc_link_hash_entry *h; | |
e054468f | 3774 | struct plt_entry *plt_ent; |
721956f4 AM |
3775 | |
3776 | /* Where this stub is being called from, or, in the case of combined | |
3777 | stub sections, the first input section in the group. */ | |
3778 | asection *id_sec; | |
6911b7dc AM |
3779 | |
3780 | /* Symbol st_other. */ | |
3781 | unsigned char other; | |
721956f4 AM |
3782 | }; |
3783 | ||
3784 | struct ppc_branch_hash_entry { | |
3785 | ||
3786 | /* Base hash table entry structure. */ | |
3787 | struct bfd_hash_entry root; | |
3788 | ||
c456f082 | 3789 | /* Offset within branch lookup table. */ |
721956f4 AM |
3790 | unsigned int offset; |
3791 | ||
3792 | /* Generation marker. */ | |
3793 | unsigned int iter; | |
3794 | }; | |
65f38f15 | 3795 | |
19e08130 AM |
3796 | /* Used to track dynamic relocations for local symbols. */ |
3797 | struct ppc_dyn_relocs | |
3798 | { | |
3799 | struct ppc_dyn_relocs *next; | |
3800 | ||
3801 | /* The input section of the reloc. */ | |
3802 | asection *sec; | |
3803 | ||
3804 | /* Total number of relocs copied for the input section. */ | |
3805 | unsigned int count : 31; | |
3806 | ||
3807 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3808 | unsigned int ifunc : 1; | |
3809 | }; | |
3810 | ||
65f38f15 AM |
3811 | struct ppc_link_hash_entry |
3812 | { | |
3813 | struct elf_link_hash_entry elf; | |
3814 | ||
b3fac117 AM |
3815 | union { |
3816 | /* A pointer to the most recently used stub hash entry against this | |
3817 | symbol. */ | |
3818 | struct ppc_stub_hash_entry *stub_cache; | |
3819 | ||
3820 | /* A pointer to the next symbol starting with a '.' */ | |
3821 | struct ppc_link_hash_entry *next_dot_sym; | |
3822 | } u; | |
721956f4 | 3823 | |
65f38f15 | 3824 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3825 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3826 | |
721956f4 | 3827 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3828 | struct ppc_link_hash_entry *oh; |
721956f4 | 3829 | |
e86ce104 AM |
3830 | /* Flag function code and descriptor symbols. */ |
3831 | unsigned int is_func:1; | |
3832 | unsigned int is_func_descriptor:1; | |
908b32fc | 3833 | unsigned int fake:1; |
411e1bfb | 3834 | |
c5614fa4 AM |
3835 | /* Whether global opd/toc sym has been adjusted or not. |
3836 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3837 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3838 | unsigned int adjust_done:1; |
3839 | ||
99877b66 AM |
3840 | /* Set if we twiddled this symbol to weak at some stage. */ |
3841 | unsigned int was_undefined:1; | |
3842 | ||
411e1bfb | 3843 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3844 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3845 | corresponding relocs are encountered during check_relocs. | |
3846 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3847 | indicate the corresponding GOT entry type is not needed. | |
3848 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3849 | a TPREL one. We use a separate flag rather than setting TPREL | |
3850 | just for convenience in distinguishing the two cases. */ | |
3851 | #define TLS_GD 1 /* GD reloc. */ | |
3852 | #define TLS_LD 2 /* LD reloc. */ | |
3853 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3854 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3855 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3856 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3857 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3858 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3859 | unsigned char tls_mask; |
65f38f15 AM |
3860 | }; |
3861 | ||
3862 | /* ppc64 ELF linker hash table. */ | |
3863 | ||
3864 | struct ppc_link_hash_table | |
3865 | { | |
3866 | struct elf_link_hash_table elf; | |
3867 | ||
721956f4 AM |
3868 | /* The stub hash table. */ |
3869 | struct bfd_hash_table stub_hash_table; | |
3870 | ||
3871 | /* Another hash table for plt_branch stubs. */ | |
3872 | struct bfd_hash_table branch_hash_table; | |
3873 | ||
3b421ab3 AM |
3874 | /* Hash table for function prologue tocsave. */ |
3875 | htab_t tocsave_htab; | |
3876 | ||
721956f4 AM |
3877 | /* Linker stub bfd. */ |
3878 | bfd *stub_bfd; | |
3879 | ||
3880 | /* Linker call-backs. */ | |
4ce794b7 AM |
3881 | asection * (*add_stub_section) (const char *, asection *); |
3882 | void (*layout_sections_again) (void); | |
721956f4 AM |
3883 | |
3884 | /* Array to keep track of which stub sections have been created, and | |
3885 | information on stub grouping. */ | |
3886 | struct map_stub { | |
3887 | /* This is the section to which stubs in the group will be attached. */ | |
3888 | asection *link_sec; | |
3889 | /* The stub section. */ | |
3890 | asection *stub_sec; | |
ad8e1ba5 AM |
3891 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3892 | bfd_vma toc_off; | |
721956f4 AM |
3893 | } *stub_group; |
3894 | ||
ad8e1ba5 AM |
3895 | /* Temp used when calculating TOC pointers. */ |
3896 | bfd_vma toc_curr; | |
bf102f86 AM |
3897 | bfd *toc_bfd; |
3898 | asection *toc_first_sec; | |
ad8e1ba5 | 3899 | |
8f3bab57 AM |
3900 | /* Highest input section id. */ |
3901 | int top_id; | |
3902 | ||
734b6cf9 AM |
3903 | /* Highest output section index. */ |
3904 | int top_index; | |
3905 | ||
b3fac117 AM |
3906 | /* Used when adding symbols. */ |
3907 | struct ppc_link_hash_entry *dot_syms; | |
3908 | ||
734b6cf9 AM |
3909 | /* List of input sections for each output section. */ |
3910 | asection **input_list; | |
721956f4 | 3911 | |
33e44f2e | 3912 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3913 | asection *dynbss; |
3914 | asection *relbss; | |
3915 | asection *glink; | |
82bd7b59 | 3916 | asection *sfpr; |
4ce794b7 AM |
3917 | asection *brlt; |
3918 | asection *relbrlt; | |
58d180e8 | 3919 | asection *glink_eh_frame; |
ec338859 | 3920 | |
8387904d AM |
3921 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3922 | struct ppc_link_hash_entry *tls_get_addr; | |
3923 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3924 | |
927be08e AM |
3925 | /* The size of reliplt used by got entry relocs. */ |
3926 | bfd_size_type got_reli_size; | |
3927 | ||
9b5ecbd0 | 3928 | /* Statistics. */ |
794e51c0 | 3929 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
9b5ecbd0 | 3930 | |
ee75fd95 AM |
3931 | /* Number of stubs against global syms. */ |
3932 | unsigned long stub_globals; | |
3933 | ||
794e51c0 AM |
3934 | /* Alignment of PLT call stubs. */ |
3935 | unsigned int plt_stub_align:4; | |
3936 | ||
ee67d69a AM |
3937 | /* Set if we're linking code with function descriptors. */ |
3938 | unsigned int opd_abi:1; | |
3939 | ||
9df0ef5f AM |
3940 | /* Set if PLT call stubs should load r11. */ |
3941 | unsigned int plt_static_chain:1; | |
3942 | ||
794e51c0 AM |
3943 | /* Set if PLT call stubs need a read-read barrier. */ |
3944 | unsigned int plt_thread_safe:1; | |
3945 | ||
ad8e1ba5 | 3946 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3947 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3948 | |
a7f2871e AM |
3949 | /* Set if __tls_get_addr optimization should not be done. */ |
3950 | unsigned int no_tls_get_addr_opt:1; | |
3951 | ||
4c52953f | 3952 | /* Support for multiple toc sections. */ |
33c0ec9d | 3953 | unsigned int do_multi_toc:1; |
4c52953f | 3954 | unsigned int multi_toc_needed:1; |
927be08e | 3955 | unsigned int second_toc_pass:1; |
67f0cbdb | 3956 | unsigned int do_toc_opt:1; |
4c52953f | 3957 | |
5d1634d7 | 3958 | /* Set on error. */ |
99877b66 | 3959 | unsigned int stub_error:1; |
721956f4 | 3960 | |
7d9616d7 | 3961 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3962 | unsigned int twiddled_syms:1; |
721956f4 AM |
3963 | |
3964 | /* Incremented every time we size stubs. */ | |
3965 | unsigned int stub_iteration; | |
5d1634d7 | 3966 | |
87d72d41 AM |
3967 | /* Small local sym cache. */ |
3968 | struct sym_cache sym_cache; | |
65f38f15 AM |
3969 | }; |
3970 | ||
4c52953f AM |
3971 | /* Rename some of the generic section flags to better document how they |
3972 | are used here. */ | |
b0dddeec AM |
3973 | |
3974 | /* Nonzero if this section has TLS related relocations. */ | |
3975 | #define has_tls_reloc sec_flg0 | |
3976 | ||
3977 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3978 | #define has_tls_get_addr_call sec_flg1 | |
3979 | ||
3980 | /* Nonzero if this section has any toc or got relocs. */ | |
3981 | #define has_toc_reloc sec_flg2 | |
3982 | ||
3983 | /* Nonzero if this section has a call to another section that uses | |
3984 | the toc or got. */ | |
d77c8a4b | 3985 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3986 | |
3987 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3988 | #define call_check_in_progress sec_flg4 |
70cc837d | 3989 | #define call_check_done sec_flg5 |
4c52953f | 3990 | |
65f38f15 AM |
3991 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3992 | ||
3993 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3994 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3995 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3996 | |
721956f4 AM |
3997 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3998 | ((struct ppc_stub_hash_entry *) \ | |
3999 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4000 | ||
4001 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4002 | ((struct ppc_branch_hash_entry *) \ | |
4003 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4004 | ||
4005 | /* Create an entry in the stub hash table. */ | |
4006 | ||
4007 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4008 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4009 | struct bfd_hash_table *table, | |
4010 | const char *string) | |
721956f4 AM |
4011 | { |
4012 | /* Allocate the structure if it has not already been allocated by a | |
4013 | subclass. */ | |
4014 | if (entry == NULL) | |
4015 | { | |
4016 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4017 | if (entry == NULL) | |
4018 | return entry; | |
4019 | } | |
4020 | ||
4021 | /* Call the allocation method of the superclass. */ | |
4022 | entry = bfd_hash_newfunc (entry, table, string); | |
4023 | if (entry != NULL) | |
4024 | { | |
4025 | struct ppc_stub_hash_entry *eh; | |
4026 | ||
4027 | /* Initialize the local fields. */ | |
4028 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4029 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
4030 | eh->stub_sec = NULL; |
4031 | eh->stub_offset = 0; | |
4032 | eh->target_value = 0; | |
4033 | eh->target_section = NULL; | |
721956f4 | 4034 | eh->h = NULL; |
6911b7dc | 4035 | eh->plt_ent = NULL; |
721956f4 | 4036 | eh->id_sec = NULL; |
6911b7dc | 4037 | eh->other = 0; |
721956f4 AM |
4038 | } |
4039 | ||
4040 | return entry; | |
4041 | } | |
4042 | ||
4043 | /* Create an entry in the branch hash table. */ | |
4044 | ||
4045 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4046 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4047 | struct bfd_hash_table *table, | |
4048 | const char *string) | |
721956f4 AM |
4049 | { |
4050 | /* Allocate the structure if it has not already been allocated by a | |
4051 | subclass. */ | |
4052 | if (entry == NULL) | |
4053 | { | |
4054 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4055 | if (entry == NULL) | |
4056 | return entry; | |
4057 | } | |
4058 | ||
4059 | /* Call the allocation method of the superclass. */ | |
4060 | entry = bfd_hash_newfunc (entry, table, string); | |
4061 | if (entry != NULL) | |
4062 | { | |
4063 | struct ppc_branch_hash_entry *eh; | |
4064 | ||
4065 | /* Initialize the local fields. */ | |
4066 | eh = (struct ppc_branch_hash_entry *) entry; | |
4067 | eh->offset = 0; | |
4068 | eh->iter = 0; | |
4069 | } | |
4070 | ||
4071 | return entry; | |
4072 | } | |
4073 | ||
65f38f15 AM |
4074 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4075 | ||
4076 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4077 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4078 | struct bfd_hash_table *table, | |
4079 | const char *string) | |
65f38f15 AM |
4080 | { |
4081 | /* Allocate the structure if it has not already been allocated by a | |
4082 | subclass. */ | |
4083 | if (entry == NULL) | |
4084 | { | |
4085 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4086 | if (entry == NULL) | |
4087 | return entry; | |
4088 | } | |
4089 | ||
4090 | /* Call the allocation method of the superclass. */ | |
4091 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4092 | if (entry != NULL) | |
4093 | { | |
4094 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4095 | ||
b3fac117 | 4096 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4097 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4098 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4099 | ||
4100 | /* When making function calls, old ABI code references function entry | |
4101 | points (dot symbols), while new ABI code references the function | |
4102 | descriptor symbol. We need to make any combination of reference and | |
4103 | definition work together, without breaking archive linking. | |
4104 | ||
4105 | For a defined function "foo" and an undefined call to "bar": | |
4106 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4107 | "bar" too). | |
4108 | A new object defines "foo" and references "bar". | |
4109 | ||
4110 | A new object thus has no problem with its undefined symbols being | |
4111 | satisfied by definitions in an old object. On the other hand, the | |
4112 | old object won't have ".bar" satisfied by a new object. | |
4113 | ||
4114 | Keep a list of newly added dot-symbols. */ | |
4115 | ||
4116 | if (string[0] == '.') | |
4117 | { | |
4118 | struct ppc_link_hash_table *htab; | |
4119 | ||
4120 | htab = (struct ppc_link_hash_table *) table; | |
4121 | eh->u.next_dot_sym = htab->dot_syms; | |
4122 | htab->dot_syms = eh; | |
4123 | } | |
65f38f15 AM |
4124 | } |
4125 | ||
4126 | return entry; | |
4127 | } | |
4128 | ||
3b421ab3 AM |
4129 | struct tocsave_entry { |
4130 | asection *sec; | |
4131 | bfd_vma offset; | |
4132 | }; | |
4133 | ||
4134 | static hashval_t | |
4135 | tocsave_htab_hash (const void *p) | |
4136 | { | |
4137 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4138 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4139 | } | |
4140 | ||
4141 | static int | |
4142 | tocsave_htab_eq (const void *p1, const void *p2) | |
4143 | { | |
4144 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4145 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4146 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4147 | } | |
4148 | ||
65f38f15 AM |
4149 | /* Create a ppc64 ELF linker hash table. */ |
4150 | ||
4151 | static struct bfd_link_hash_table * | |
4ce794b7 | 4152 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4153 | { |
4154 | struct ppc_link_hash_table *htab; | |
4155 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4156 | ||
4ce794b7 | 4157 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4158 | if (htab == NULL) |
4159 | return NULL; | |
4160 | ||
66eb6687 | 4161 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4162 | sizeof (struct ppc_link_hash_entry), |
4163 | PPC64_ELF_DATA)) | |
65f38f15 | 4164 | { |
e2d34d7d | 4165 | free (htab); |
65f38f15 AM |
4166 | return NULL; |
4167 | } | |
4168 | ||
721956f4 | 4169 | /* Init the stub hash table too. */ |
66eb6687 AM |
4170 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4171 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
4172 | return NULL; |
4173 | ||
4174 | /* And the branch hash table. */ | |
66eb6687 AM |
4175 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4176 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
4177 | return NULL; |
4178 | ||
3b421ab3 AM |
4179 | htab->tocsave_htab = htab_try_create (1024, |
4180 | tocsave_htab_hash, | |
4181 | tocsave_htab_eq, | |
4182 | NULL); | |
4183 | if (htab->tocsave_htab == NULL) | |
4184 | return NULL; | |
4185 | ||
3254fd24 AM |
4186 | /* Initializing two fields of the union is just cosmetic. We really |
4187 | only care about glist, but when compiled on a 32-bit host the | |
4188 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4189 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4190 | htab->elf.init_got_refcount.refcount = 0; |
4191 | htab->elf.init_got_refcount.glist = NULL; | |
4192 | htab->elf.init_plt_refcount.refcount = 0; | |
4193 | htab->elf.init_plt_refcount.glist = NULL; | |
4194 | htab->elf.init_got_offset.offset = 0; | |
4195 | htab->elf.init_got_offset.glist = NULL; | |
4196 | htab->elf.init_plt_offset.offset = 0; | |
4197 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4198 | |
65f38f15 AM |
4199 | return &htab->elf.root; |
4200 | } | |
4201 | ||
721956f4 AM |
4202 | /* Free the derived linker hash table. */ |
4203 | ||
4204 | static void | |
4ce794b7 | 4205 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4206 | { |
3b421ab3 | 4207 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4208 | |
3b421ab3 AM |
4209 | bfd_hash_table_free (&htab->stub_hash_table); |
4210 | bfd_hash_table_free (&htab->branch_hash_table); | |
4211 | if (htab->tocsave_htab) | |
4212 | htab_delete (htab->tocsave_htab); | |
9f7c3e5e | 4213 | _bfd_elf_link_hash_table_free (hash); |
721956f4 AM |
4214 | } |
4215 | ||
bfeb4a28 AM |
4216 | /* Create sections for linker generated code. */ |
4217 | ||
4218 | static bfd_boolean | |
4219 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4220 | { | |
4221 | struct ppc_link_hash_table *htab; | |
4222 | flagword flags; | |
4223 | ||
4224 | htab = ppc_hash_table (info); | |
4225 | ||
4226 | /* Create .sfpr for code to save and restore fp regs. */ | |
4227 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4228 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4229 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4230 | flags); | |
4231 | if (htab->sfpr == NULL | |
4232 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4233 | return FALSE; | |
4234 | ||
4235 | /* Create .glink for lazy dynamic linking support. */ | |
4236 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4237 | flags); | |
4238 | if (htab->glink == NULL | |
4239 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4240 | return FALSE; | |
4241 | ||
4242 | if (!info->no_ld_generated_unwind_info) | |
4243 | { | |
4244 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4245 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4246 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4247 | ".eh_frame", | |
4248 | flags); | |
4249 | if (htab->glink_eh_frame == NULL | |
4250 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4251 | return FALSE; | |
4252 | } | |
4253 | ||
4254 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4255 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4256 | if (htab->elf.iplt == NULL | |
4257 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4258 | return FALSE; |
4259 | ||
4260 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4261 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4262 | htab->elf.irelplt |
4263 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4264 | if (htab->elf.irelplt == NULL | |
4265 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4266 | return FALSE; |
4267 | ||
4268 | /* Create branch lookup table for plt_branch stubs. */ | |
4269 | flags = (SEC_ALLOC | SEC_LOAD | |
4270 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4271 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4272 | flags); | |
4273 | if (htab->brlt == NULL | |
4274 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4275 | return FALSE; | |
4276 | ||
4277 | if (!info->shared) | |
4278 | return TRUE; | |
4279 | ||
4280 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4281 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4282 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4283 | ".rela.branch_lt", | |
4284 | flags); | |
4285 | if (htab->relbrlt == NULL | |
4286 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4287 | return FALSE; | |
4288 | ||
4289 | return TRUE; | |
4290 | } | |
4291 | ||
e717da7e AM |
4292 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4293 | ||
bfeb4a28 | 4294 | bfd_boolean |
e717da7e AM |
4295 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) |
4296 | { | |
4297 | struct ppc_link_hash_table *htab; | |
4298 | ||
4299 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4300 | ||
4301 | /* Always hook our dynamic sections into the first bfd, which is the | |
4302 | linker created stub bfd. This ensures that the GOT header is at | |
4303 | the start of the output TOC section. */ | |
4304 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4305 | if (htab == NULL) |
bfeb4a28 | 4306 | return FALSE; |
e717da7e AM |
4307 | htab->stub_bfd = abfd; |
4308 | htab->elf.dynobj = abfd; | |
bfeb4a28 AM |
4309 | |
4310 | if (info->relocatable) | |
4311 | return TRUE; | |
4312 | ||
4313 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4314 | } |
4315 | ||
721956f4 AM |
4316 | /* Build a name for an entry in the stub hash table. */ |
4317 | ||
4318 | static char * | |
4ce794b7 AM |
4319 | ppc_stub_name (const asection *input_section, |
4320 | const asection *sym_sec, | |
4321 | const struct ppc_link_hash_entry *h, | |
4322 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4323 | { |
4324 | char *stub_name; | |
bcaa2f82 | 4325 | ssize_t len; |
721956f4 AM |
4326 | |
4327 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4328 | offsets from a sym as a branch target? In fact, we could | |
4329 | probably assume the addend is always zero. */ | |
4330 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4331 | ||
4332 | if (h) | |
4333 | { | |
4334 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4335 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4336 | if (stub_name == NULL) |
4337 | return stub_name; | |
4338 | ||
bcaa2f82 AM |
4339 | len = sprintf (stub_name, "%08x.%s+%x", |
4340 | input_section->id & 0xffffffff, | |
4341 | h->elf.root.root.string, | |
4342 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4343 | } |
4344 | else | |
4345 | { | |
ad8e1ba5 | 4346 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4347 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4348 | if (stub_name == NULL) |
4349 | return stub_name; | |
4350 | ||
bcaa2f82 AM |
4351 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4352 | input_section->id & 0xffffffff, | |
4353 | sym_sec->id & 0xffffffff, | |
4354 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4355 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4356 | } |
bcaa2f82 | 4357 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4358 | stub_name[len - 2] = 0; |
721956f4 AM |
4359 | return stub_name; |
4360 | } | |
4361 | ||
4362 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4363 | creating the stub name takes a bit of time. */ | |
4364 | ||
4365 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4366 | ppc_get_stub_entry (const asection *input_section, |
4367 | const asection *sym_sec, | |
039b3fef | 4368 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4369 | const Elf_Internal_Rela *rel, |
4370 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4371 | { |
4372 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4373 | const asection *id_sec; |
4374 | ||
4375 | /* If this input section is part of a group of sections sharing one | |
4376 | stub section, then use the id of the first section in the group. | |
4377 | Stub names need to include a section id, as there may well be | |
4378 | more than one stub used to reach say, printf, and we need to | |
4379 | distinguish between them. */ | |
4380 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4381 | ||
b3fac117 AM |
4382 | if (h != NULL && h->u.stub_cache != NULL |
4383 | && h->u.stub_cache->h == h | |
4384 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4385 | { |
b3fac117 | 4386 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4387 | } |
4388 | else | |
4389 | { | |
4390 | char *stub_name; | |
4391 | ||
4392 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4393 | if (stub_name == NULL) | |
4394 | return NULL; | |
4395 | ||
4396 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4397 | stub_name, FALSE, FALSE); |
721956f4 | 4398 | if (h != NULL) |
b3fac117 | 4399 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4400 | |
4401 | free (stub_name); | |
4402 | } | |
4403 | ||
4404 | return stub_entry; | |
4405 | } | |
4406 | ||
4407 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4408 | stub entry are initialised. */ | |
4409 | ||
4410 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4411 | ppc_add_stub (const char *stub_name, |
4412 | asection *section, | |
25f53a85 | 4413 | struct bfd_link_info *info) |
721956f4 | 4414 | { |
25f53a85 | 4415 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4416 | asection *link_sec; |
4417 | asection *stub_sec; | |
4418 | struct ppc_stub_hash_entry *stub_entry; | |
4419 | ||
4420 | link_sec = htab->stub_group[section->id].link_sec; | |
4421 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4422 | if (stub_sec == NULL) | |
4423 | { | |
4424 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4425 | if (stub_sec == NULL) | |
4426 | { | |
d4c88bbb | 4427 | size_t namelen; |
721956f4 AM |
4428 | bfd_size_type len; |
4429 | char *s_name; | |
4430 | ||
d4c88bbb AM |
4431 | namelen = strlen (link_sec->name); |
4432 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4433 | s_name = bfd_alloc (htab->stub_bfd, len); |
4434 | if (s_name == NULL) | |
4435 | return NULL; | |
4436 | ||
d4c88bbb AM |
4437 | memcpy (s_name, link_sec->name, namelen); |
4438 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4439 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4440 | if (stub_sec == NULL) | |
4441 | return NULL; | |
4442 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4443 | } | |
4444 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4445 | } | |
4446 | ||
4447 | /* Enter this entry into the linker stub hash table. */ | |
4448 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4449 | TRUE, FALSE); |
721956f4 AM |
4450 | if (stub_entry == NULL) |
4451 | { | |
8de848d8 | 4452 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4453 | section->owner, stub_name); |
721956f4 AM |
4454 | return NULL; |
4455 | } | |
4456 | ||
4457 | stub_entry->stub_sec = stub_sec; | |
4458 | stub_entry->stub_offset = 0; | |
4459 | stub_entry->id_sec = link_sec; | |
4460 | return stub_entry; | |
4461 | } | |
4462 | ||
e717da7e AM |
4463 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4464 | not already done. */ | |
65f38f15 | 4465 | |
b34976b6 | 4466 | static bfd_boolean |
e717da7e | 4467 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4468 | { |
e717da7e AM |
4469 | asection *got, *relgot; |
4470 | flagword flags; | |
4471 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4472 | |
0c8d6e5c | 4473 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4474 | return FALSE; |
4dfe6ac6 NC |
4475 | if (htab == NULL) |
4476 | return FALSE; | |
0ffa91dd | 4477 | |
33e44f2e AM |
4478 | if (!htab->elf.sgot |
4479 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4480 | return FALSE; | |
e717da7e AM |
4481 | |
4482 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4483 | | SEC_LINKER_CREATED); | |
4484 | ||
c456f082 | 4485 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4486 | if (!got |
e717da7e AM |
4487 | || !bfd_set_section_alignment (abfd, got, 3)) |
4488 | return FALSE; | |
65f38f15 | 4489 | |
c456f082 AM |
4490 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4491 | flags | SEC_READONLY); | |
e717da7e | 4492 | if (!relgot |
e717da7e | 4493 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4494 | return FALSE; |
e717da7e AM |
4495 | |
4496 | ppc64_elf_tdata (abfd)->got = got; | |
4497 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4498 | return TRUE; |
65f38f15 | 4499 | } |
5bd4f169 | 4500 | |
82bd7b59 | 4501 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4502 | |
b34976b6 | 4503 | static bfd_boolean |
4ce794b7 | 4504 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4505 | { |
65f38f15 | 4506 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4507 | |
65f38f15 | 4508 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4509 | return FALSE; |
65f38f15 | 4510 | |
e717da7e | 4511 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4512 | if (htab == NULL) |
4513 | return FALSE; | |
4514 | ||
3d4d4302 | 4515 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
65f38f15 | 4516 | if (!info->shared) |
3d4d4302 | 4517 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4518 | |
33e44f2e | 4519 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
4ce794b7 | 4520 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4521 | abort (); |
4522 | ||
b34976b6 | 4523 | return TRUE; |
5bd4f169 AM |
4524 | } |
4525 | ||
b31867b6 AM |
4526 | /* Follow indirect and warning symbol links. */ |
4527 | ||
4528 | static inline struct bfd_link_hash_entry * | |
4529 | follow_link (struct bfd_link_hash_entry *h) | |
4530 | { | |
4531 | while (h->type == bfd_link_hash_indirect | |
4532 | || h->type == bfd_link_hash_warning) | |
4533 | h = h->u.i.link; | |
4534 | return h; | |
4535 | } | |
4536 | ||
4537 | static inline struct elf_link_hash_entry * | |
4538 | elf_follow_link (struct elf_link_hash_entry *h) | |
4539 | { | |
4540 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4541 | } | |
4542 | ||
4543 | static inline struct ppc_link_hash_entry * | |
4544 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4545 | { | |
4546 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4547 | } | |
4548 | ||
40d16e0b AM |
4549 | /* Merge PLT info on FROM with that on TO. */ |
4550 | ||
4551 | static void | |
4552 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4553 | struct ppc_link_hash_entry *to) | |
4554 | { | |
4555 | if (from->elf.plt.plist != NULL) | |
4556 | { | |
4557 | if (to->elf.plt.plist != NULL) | |
4558 | { | |
4559 | struct plt_entry **entp; | |
4560 | struct plt_entry *ent; | |
4561 | ||
4562 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4563 | { | |
4564 | struct plt_entry *dent; | |
4565 | ||
4566 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4567 | if (dent->addend == ent->addend) | |
4568 | { | |
4569 | dent->plt.refcount += ent->plt.refcount; | |
4570 | *entp = ent->next; | |
4571 | break; | |
4572 | } | |
4573 | if (dent == NULL) | |
4574 | entp = &ent->next; | |
4575 | } | |
4576 | *entp = to->elf.plt.plist; | |
4577 | } | |
4578 | ||
4579 | to->elf.plt.plist = from->elf.plt.plist; | |
4580 | from->elf.plt.plist = NULL; | |
4581 | } | |
4582 | } | |
4583 | ||
65f38f15 AM |
4584 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4585 | ||
4586 | static void | |
fcfa13d2 AM |
4587 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4588 | struct elf_link_hash_entry *dir, | |
4589 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4590 | { |
4591 | struct ppc_link_hash_entry *edir, *eind; | |
4592 | ||
4593 | edir = (struct ppc_link_hash_entry *) dir; | |
4594 | eind = (struct ppc_link_hash_entry *) ind; | |
4595 | ||
c79d6685 AM |
4596 | edir->is_func |= eind->is_func; |
4597 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4598 | edir->tls_mask |= eind->tls_mask; | |
4599 | if (eind->oh != NULL) | |
4600 | edir->oh = ppc_follow_link (eind->oh); | |
4601 | ||
4602 | /* If called to transfer flags for a weakdef during processing | |
4603 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4604 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4605 | if (!(ELIMINATE_COPY_RELOCS | |
4606 | && eind->elf.root.type != bfd_link_hash_indirect | |
4607 | && edir->elf.dynamic_adjusted)) | |
4608 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4609 | ||
4610 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4611 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4612 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4613 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4614 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4615 | |
411e1bfb | 4616 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4617 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4618 | { |
bbd7ec4a AM |
4619 | if (edir->dyn_relocs != NULL) |
4620 | { | |
6061a67d AM |
4621 | struct elf_dyn_relocs **pp; |
4622 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4623 | |
fcfa13d2 | 4624 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4625 | list. Merge any entries against the same section. */ |
4626 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4627 | { | |
6061a67d | 4628 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4629 | |
4630 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4631 | if (q->sec == p->sec) | |
4632 | { | |
4633 | q->pc_count += p->pc_count; | |
4634 | q->count += p->count; | |
4635 | *pp = p->next; | |
4636 | break; | |
4637 | } | |
4638 | if (q == NULL) | |
4639 | pp = &p->next; | |
4640 | } | |
4641 | *pp = edir->dyn_relocs; | |
4642 | } | |
4643 | ||
65f38f15 AM |
4644 | edir->dyn_relocs = eind->dyn_relocs; |
4645 | eind->dyn_relocs = NULL; | |
4646 | } | |
65f38f15 | 4647 | |
68ba6d40 AM |
4648 | /* If we were called to copy over info for a weak sym, that's all. |
4649 | You might think dyn_relocs need not be copied over; After all, | |
4650 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4651 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4652 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4653 | dyn_relocs in read-only sections, and it does so on what is the | |
4654 | DIR sym here. */ | |
4655 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4656 | return; | |
4657 | ||
81848ca0 AM |
4658 | /* Copy over got entries that we may have already seen to the |
4659 | symbol which just became indirect. */ | |
411e1bfb AM |
4660 | if (eind->elf.got.glist != NULL) |
4661 | { | |
4662 | if (edir->elf.got.glist != NULL) | |
4663 | { | |
4664 | struct got_entry **entp; | |
4665 | struct got_entry *ent; | |
4666 | ||
4667 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4668 | { | |
4669 | struct got_entry *dent; | |
4670 | ||
4671 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4672 | if (dent->addend == ent->addend | |
e717da7e | 4673 | && dent->owner == ent->owner |
411e1bfb AM |
4674 | && dent->tls_type == ent->tls_type) |
4675 | { | |
4676 | dent->got.refcount += ent->got.refcount; | |
4677 | *entp = ent->next; | |
4678 | break; | |
4679 | } | |
4680 | if (dent == NULL) | |
4681 | entp = &ent->next; | |
4682 | } | |
4683 | *entp = edir->elf.got.glist; | |
4684 | } | |
4685 | ||
4686 | edir->elf.got.glist = eind->elf.got.glist; | |
4687 | eind->elf.got.glist = NULL; | |
4688 | } | |
4689 | ||
4690 | /* And plt entries. */ | |
40d16e0b | 4691 | move_plt_plist (eind, edir); |
411e1bfb | 4692 | |
fcfa13d2 | 4693 | if (eind->elf.dynindx != -1) |
411e1bfb | 4694 | { |
fcfa13d2 AM |
4695 | if (edir->elf.dynindx != -1) |
4696 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4697 | edir->elf.dynstr_index); | |
411e1bfb AM |
4698 | edir->elf.dynindx = eind->elf.dynindx; |
4699 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4700 | eind->elf.dynindx = -1; | |
4701 | eind->elf.dynstr_index = 0; | |
4702 | } | |
411e1bfb AM |
4703 | } |
4704 | ||
8387904d AM |
4705 | /* Find the function descriptor hash entry from the given function code |
4706 | hash entry FH. Link the entries via their OH fields. */ | |
4707 | ||
4708 | static struct ppc_link_hash_entry * | |
b31867b6 | 4709 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4710 | { |
4711 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4712 | ||
4713 | if (fdh == NULL) | |
4714 | { | |
4715 | const char *fd_name = fh->elf.root.root.string + 1; | |
4716 | ||
4717 | fdh = (struct ppc_link_hash_entry *) | |
4718 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4719 | if (fdh == NULL) |
4720 | return fdh; | |
4721 | ||
4722 | fdh->is_func_descriptor = 1; | |
4723 | fdh->oh = fh; | |
4724 | fh->is_func = 1; | |
4725 | fh->oh = fdh; | |
8387904d AM |
4726 | } |
4727 | ||
b31867b6 | 4728 | return ppc_follow_link (fdh); |
8387904d AM |
4729 | } |
4730 | ||
bb700d78 AM |
4731 | /* Make a fake function descriptor sym for the code sym FH. */ |
4732 | ||
4733 | static struct ppc_link_hash_entry * | |
4734 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4735 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4736 | { |
4737 | bfd *abfd; | |
4738 | asymbol *newsym; | |
4739 | struct bfd_link_hash_entry *bh; | |
4740 | struct ppc_link_hash_entry *fdh; | |
4741 | ||
4742 | abfd = fh->elf.root.u.undef.abfd; | |
4743 | newsym = bfd_make_empty_symbol (abfd); | |
4744 | newsym->name = fh->elf.root.root.string + 1; | |
4745 | newsym->section = bfd_und_section_ptr; | |
4746 | newsym->value = 0; | |
908b32fc | 4747 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4748 | |
4749 | bh = NULL; | |
4750 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4751 | newsym->flags, newsym->section, | |
4752 | newsym->value, NULL, FALSE, FALSE, | |
4753 | &bh)) | |
4754 | return NULL; | |
4755 | ||
4756 | fdh = (struct ppc_link_hash_entry *) bh; | |
4757 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4758 | fdh->fake = 1; |
4759 | fdh->is_func_descriptor = 1; | |
4760 | fdh->oh = fh; | |
4761 | fh->is_func = 1; | |
4762 | fh->oh = fdh; | |
bb700d78 AM |
4763 | return fdh; |
4764 | } | |
4765 | ||
8387904d AM |
4766 | /* Fix function descriptor symbols defined in .opd sections to be |
4767 | function type. */ | |
555cd476 AM |
4768 | |
4769 | static bfd_boolean | |
c16153ae | 4770 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4771 | struct bfd_link_info *info, |
555cd476 | 4772 | Elf_Internal_Sym *isym, |
6911b7dc | 4773 | const char **name, |
555cd476 AM |
4774 | flagword *flags ATTRIBUTE_UNUSED, |
4775 | asection **sec, | |
4776 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4777 | { | |
f64b2e8d NC |
4778 | if ((ibfd->flags & DYNAMIC) == 0 |
4779 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4780 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4781 | ||
e054468f | 4782 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4783 | { |
4784 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4785 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4786 | } |
e054468f AM |
4787 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4788 | ; | |
4789 | else if (*sec != NULL | |
70cc837d | 4790 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4791 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4792 | |
6911b7dc AM |
4793 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4794 | { | |
4795 | if (abiversion (ibfd) == 0) | |
4796 | set_abiversion (ibfd, 2); | |
4797 | else if (abiversion (ibfd) == 1) | |
4798 | { | |
4799 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4800 | " for ABI version 1\n"), name); | |
4801 | bfd_set_error (bfd_error_bad_value); | |
4802 | return FALSE; | |
4803 | } | |
4804 | } | |
4805 | ||
555cd476 AM |
4806 | return TRUE; |
4807 | } | |
4808 | ||
6911b7dc AM |
4809 | /* Merge non-visibility st_other attributes: local entry point. */ |
4810 | ||
4811 | static void | |
4812 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4813 | const Elf_Internal_Sym *isym, | |
4814 | bfd_boolean definition, | |
4815 | bfd_boolean dynamic) | |
4816 | { | |
4817 | if (definition && !dynamic) | |
4818 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4819 | | ELF_ST_VISIBILITY (h->other)); | |
4820 | } | |
4821 | ||
8387904d | 4822 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4823 | inclusion of a new ABI object archive that defines "bar". |
4824 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4825 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4826 | |
4827 | static struct elf_link_hash_entry * | |
4828 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4829 | struct bfd_link_info *info, | |
4830 | const char *name) | |
4831 | { | |
4832 | struct elf_link_hash_entry *h; | |
4833 | char *dot_name; | |
4834 | size_t len; | |
4835 | ||
4836 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4837 | if (h != NULL |
4838 | /* Don't return this sym if it is a fake function descriptor | |
4839 | created by add_symbol_adjust. */ | |
4840 | && !(h->root.type == bfd_link_hash_undefweak | |
4841 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4842 | return h; |
4843 | ||
4844 | if (name[0] == '.') | |
4845 | return h; | |
4846 | ||
4847 | len = strlen (name); | |
4848 | dot_name = bfd_alloc (abfd, len + 2); | |
4849 | if (dot_name == NULL) | |
4850 | return (struct elf_link_hash_entry *) 0 - 1; | |
4851 | dot_name[0] = '.'; | |
4852 | memcpy (dot_name + 1, name, len + 1); | |
4853 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4854 | bfd_release (abfd, dot_name); | |
4855 | return h; | |
4856 | } | |
4857 | ||
4858 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4859 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4860 | are made weak. This stops later archive searches from including an | |
4861 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4862 | prevents the linker complaining about undefined symbols. |
4863 | We also check and correct mismatched symbol visibility here. The | |
4864 | most restrictive visibility of the function descriptor and the | |
4865 | function entry symbol is used. */ | |
8387904d AM |
4866 | |
4867 | static bfd_boolean | |
b3fac117 | 4868 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4869 | { |
8387904d AM |
4870 | struct ppc_link_hash_table *htab; |
4871 | struct ppc_link_hash_entry *fdh; | |
4872 | ||
b3fac117 | 4873 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4874 | return TRUE; |
4875 | ||
b3fac117 AM |
4876 | if (eh->elf.root.type == bfd_link_hash_warning) |
4877 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4878 | |
b3fac117 AM |
4879 | if (eh->elf.root.root.string[0] != '.') |
4880 | abort (); | |
8387904d | 4881 | |
b3fac117 | 4882 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4883 | if (htab == NULL) |
4884 | return FALSE; | |
4885 | ||
b31867b6 AM |
4886 | fdh = lookup_fdh (eh, htab); |
4887 | if (fdh == NULL) | |
4888 | { | |
4889 | if (!info->relocatable | |
4890 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4891 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4892 | && eh->elf.ref_regular) | |
4893 | { | |
4894 | /* Make an undefweak function descriptor sym, which is enough to | |
4895 | pull in an --as-needed shared lib, but won't cause link | |
4896 | errors. Archives are handled elsewhere. */ | |
4897 | fdh = make_fdh (info, eh); | |
4898 | if (fdh == NULL) | |
4899 | return FALSE; | |
4900 | fdh->elf.ref_regular = 1; | |
4901 | } | |
bb700d78 | 4902 | } |
b31867b6 | 4903 | else |
8387904d | 4904 | { |
35b0ce59 AM |
4905 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4906 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4907 | if (entry_vis < descr_vis) | |
4908 | fdh->elf.other += entry_vis - descr_vis; | |
4909 | else if (entry_vis > descr_vis) | |
4910 | eh->elf.other += descr_vis - entry_vis; | |
4911 | ||
e87d886e AM |
4912 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4913 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4914 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4915 | { |
4916 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4917 | eh->was_undefined = 1; | |
4918 | htab->twiddled_syms = 1; | |
4919 | } | |
8387904d | 4920 | } |
99877b66 | 4921 | |
8387904d AM |
4922 | return TRUE; |
4923 | } | |
4924 | ||
b3fac117 AM |
4925 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4926 | ||
8387904d | 4927 | static bfd_boolean |
7d9616d7 | 4928 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4929 | { |
99877b66 | 4930 | struct ppc_link_hash_table *htab; |
b3fac117 | 4931 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4932 | |
0c8d6e5c | 4933 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4934 | return TRUE; |
4dfe6ac6 NC |
4935 | htab = ppc_hash_table (info); |
4936 | if (htab == NULL) | |
4937 | return FALSE; | |
35b0ce59 | 4938 | |
0c8d6e5c | 4939 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4940 | { |
4941 | p = &htab->dot_syms; | |
4942 | while ((eh = *p) != NULL) | |
4943 | { | |
4944 | *p = NULL; | |
1c865ab2 AM |
4945 | if (&eh->elf == htab->elf.hgot) |
4946 | ; | |
4947 | else if (htab->elf.hgot == NULL | |
4948 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4949 | htab->elf.hgot = &eh->elf; | |
4950 | else if (!add_symbol_adjust (eh, info)) | |
b3fac117 AM |
4951 | return FALSE; |
4952 | p = &eh->u.next_dot_sym; | |
4953 | } | |
4954 | } | |
4955 | ||
4956 | /* Clear the list for non-ppc64 input files. */ | |
4957 | p = &htab->dot_syms; | |
4958 | while ((eh = *p) != NULL) | |
4959 | { | |
4960 | *p = NULL; | |
4961 | p = &eh->u.next_dot_sym; | |
4962 | } | |
99877b66 AM |
4963 | |
4964 | /* We need to fix the undefs list for any syms we have twiddled to | |
4965 | undef_weak. */ | |
4966 | if (htab->twiddled_syms) | |
4967 | { | |
77cfaee6 | 4968 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4969 | htab->twiddled_syms = 0; |
4970 | } | |
b3fac117 | 4971 | return TRUE; |
8387904d AM |
4972 | } |
4973 | ||
97fed1c9 JJ |
4974 | /* Undo hash table changes when an --as-needed input file is determined |
4975 | not to be needed. */ | |
4976 | ||
4977 | static bfd_boolean | |
e5034e59 AM |
4978 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4979 | struct bfd_link_info *info, | |
4980 | enum notice_asneeded_action act) | |
97fed1c9 | 4981 | { |
e5034e59 AM |
4982 | if (act == notice_not_needed) |
4983 | { | |
4984 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4985 | |
e5034e59 AM |
4986 | if (htab == NULL) |
4987 | return FALSE; | |
4dfe6ac6 | 4988 | |
e5034e59 AM |
4989 | htab->dot_syms = NULL; |
4990 | } | |
4991 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4992 | } |
4993 | ||
aa374f67 AM |
4994 | /* If --just-symbols against a final linked binary, then assume we need |
4995 | toc adjusting stubs when calling functions defined there. */ | |
4996 | ||
4997 | static void | |
4998 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4999 | { | |
5000 | if ((sec->flags & SEC_CODE) != 0 | |
5001 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5002 | && is_ppc64_elf (sec->owner)) | |
5003 | { | |
5004 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
5005 | if (got != NULL | |
5006 | && got->size >= elf_backend_got_header_size | |
5007 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
5008 | sec->has_toc_reloc = 1; | |
5009 | } | |
5010 | _bfd_elf_link_just_syms (sec, info); | |
5011 | } | |
5012 | ||
e054468f | 5013 | static struct plt_entry ** |
4ce794b7 AM |
5014 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5015 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5016 | { |
5017 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5018 | struct plt_entry **local_plt; |
f961d9dd | 5019 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5020 | |
5021 | if (local_got_ents == NULL) | |
5022 | { | |
5023 | bfd_size_type size = symtab_hdr->sh_info; | |
5024 | ||
e054468f AM |
5025 | size *= (sizeof (*local_got_ents) |
5026 | + sizeof (*local_plt) | |
5027 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5028 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5029 | if (local_got_ents == NULL) |
e054468f | 5030 | return NULL; |
411e1bfb AM |
5031 | elf_local_got_ents (abfd) = local_got_ents; |
5032 | } | |
5033 | ||
e054468f | 5034 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5035 | { |
5036 | struct got_entry *ent; | |
5037 | ||
5038 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5039 | if (ent->addend == r_addend |
5040 | && ent->owner == abfd | |
5041 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5042 | break; |
5043 | if (ent == NULL) | |
5044 | { | |
5045 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5046 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5047 | if (ent == NULL) |
5048 | return FALSE; | |
5049 | ent->next = local_got_ents[r_symndx]; | |
5050 | ent->addend = r_addend; | |
e717da7e | 5051 | ent->owner = abfd; |
411e1bfb | 5052 | ent->tls_type = tls_type; |
927be08e | 5053 | ent->is_indirect = FALSE; |
411e1bfb AM |
5054 | ent->got.refcount = 0; |
5055 | local_got_ents[r_symndx] = ent; | |
5056 | } | |
5057 | ent->got.refcount += 1; | |
5058 | } | |
5059 | ||
e054468f | 5060 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5061 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5062 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5063 | |
5064 | return local_plt + r_symndx; | |
65f38f15 AM |
5065 | } |
5066 | ||
411e1bfb | 5067 | static bfd_boolean |
e054468f | 5068 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5069 | { |
411e1bfb | 5070 | struct plt_entry *ent; |
1e2f5b6e | 5071 | |
e054468f | 5072 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5073 | if (ent->addend == addend) |
5074 | break; | |
5075 | if (ent == NULL) | |
1e2f5b6e | 5076 | { |
411e1bfb | 5077 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5078 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5079 | if (ent == NULL) |
5080 | return FALSE; | |
e054468f | 5081 | ent->next = *plist; |
411e1bfb AM |
5082 | ent->addend = addend; |
5083 | ent->plt.refcount = 0; | |
e054468f | 5084 | *plist = ent; |
1e2f5b6e | 5085 | } |
411e1bfb | 5086 | ent->plt.refcount += 1; |
b34976b6 | 5087 | return TRUE; |
1e2f5b6e AM |
5088 | } |
5089 | ||
e054468f AM |
5090 | static bfd_boolean |
5091 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5092 | { | |
5093 | return (r_type == R_PPC64_REL24 | |
5094 | || r_type == R_PPC64_REL14 | |
5095 | || r_type == R_PPC64_REL14_BRTAKEN | |
5096 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5097 | || r_type == R_PPC64_ADDR24 | |
5098 | || r_type == R_PPC64_ADDR14 | |
5099 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5100 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5101 | } | |
5102 | ||
5bd4f169 | 5103 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5104 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5105 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5106 | |
b34976b6 | 5107 | static bfd_boolean |
4ce794b7 AM |
5108 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5109 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5110 | { |
65f38f15 | 5111 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5112 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5113 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5114 | const Elf_Internal_Rela *rel; |
5115 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5116 | asection *sreloc; |
1e2f5b6e | 5117 | asection **opd_sym_map; |
3a71aa26 | 5118 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5119 | |
1049f94e | 5120 | if (info->relocatable) |
b34976b6 | 5121 | return TRUE; |
5bd4f169 | 5122 | |
680a3378 AM |
5123 | /* Don't do anything special with non-loaded, non-alloced sections. |
5124 | In particular, any relocs in such sections should not affect GOT | |
5125 | and PLT reference counting (ie. we don't allow them to create GOT | |
5126 | or PLT entries), there's no possibility or desire to optimize TLS | |
5127 | relocs, and there's not much point in propagating relocs to shared | |
5128 | libs that the dynamic linker won't relocate. */ | |
5129 | if ((sec->flags & SEC_ALLOC) == 0) | |
5130 | return TRUE; | |
5131 | ||
0c8d6e5c | 5132 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5133 | |
65f38f15 | 5134 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5135 | if (htab == NULL) |
5136 | return FALSE; | |
5137 | ||
3a71aa26 AM |
5138 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5139 | FALSE, FALSE, TRUE); | |
5140 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5141 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5142 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5143 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5144 | sreloc = NULL; |
1e2f5b6e | 5145 | opd_sym_map = NULL; |
70cc837d | 5146 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
5147 | { |
5148 | /* Garbage collection needs some extra help with .opd sections. | |
5149 | We don't want to necessarily keep everything referenced by | |
5150 | relocs in .opd, as that would keep all functions. Instead, | |
5151 | if we reference an .opd symbol (a function descriptor), we | |
5152 | want to keep the function code symbol's section. This is | |
5153 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 5154 | information about the associated function section. */ |
1e2f5b6e AM |
5155 | bfd_size_type amt; |
5156 | ||
ee67d69a AM |
5157 | if (abiversion (abfd) == 0) |
5158 | set_abiversion (abfd, 1); | |
5159 | else if (abiversion (abfd) == 2) | |
5160 | { | |
5161 | info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"), | |
5162 | abiversion (abfd)); | |
5163 | bfd_set_error (bfd_error_bad_value); | |
5164 | return FALSE; | |
5165 | } | |
74f0fb50 | 5166 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 5167 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 5168 | if (opd_sym_map == NULL) |
b34976b6 | 5169 | return FALSE; |
74f0fb50 | 5170 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
5171 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
5172 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 5173 | } |
5bd4f169 AM |
5174 | |
5175 | rel_end = relocs + sec->reloc_count; | |
5176 | for (rel = relocs; rel < rel_end; rel++) | |
5177 | { | |
5178 | unsigned long r_symndx; | |
5179 | struct elf_link_hash_entry *h; | |
04c9666a | 5180 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5181 | int tls_type; |
7c8fe5c4 | 5182 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5183 | struct plt_entry **ifunc; |
5bd4f169 AM |
5184 | |
5185 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5186 | if (r_symndx < symtab_hdr->sh_info) | |
5187 | h = NULL; | |
5188 | else | |
973a3492 L |
5189 | { |
5190 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5191 | h = elf_follow_link (h); |
81fbe831 AM |
5192 | |
5193 | /* PR15323, ref flags aren't set for references in the same | |
5194 | object. */ | |
5195 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5196 | |
5197 | if (h == htab->elf.hgot) | |
5198 | sec->has_toc_reloc = 1; | |
973a3492 | 5199 | } |
5bd4f169 | 5200 | |
727fc41e | 5201 | tls_type = 0; |
e054468f | 5202 | ifunc = NULL; |
25f23106 AM |
5203 | if (h != NULL) |
5204 | { | |
5205 | if (h->type == STT_GNU_IFUNC) | |
5206 | { | |
5207 | h->needs_plt = 1; | |
5208 | ifunc = &h->plt.plist; | |
5209 | } | |
5210 | } | |
5211 | else | |
5212 | { | |
5213 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5214 | abfd, r_symndx); | |
5215 | if (isym == NULL) | |
5216 | return FALSE; | |
5217 | ||
5218 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5219 | { | |
5220 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5221 | rel->r_addend, PLT_IFUNC); | |
5222 | if (ifunc == NULL) | |
5223 | return FALSE; | |
5224 | } | |
5225 | } | |
4ce794b7 | 5226 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5227 | if (is_branch_reloc (r_type)) |
5228 | { | |
5229 | if (h != NULL && (h == tga || h == dottga)) | |
5230 | { | |
5231 | if (rel != relocs | |
5232 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5233 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5234 | /* We have a new-style __tls_get_addr call with a marker | |
5235 | reloc. */ | |
5236 | ; | |
5237 | else | |
5238 | /* Mark this section as having an old-style call. */ | |
5239 | sec->has_tls_get_addr_call = 1; | |
5240 | } | |
727fc41e | 5241 | |
e054468f | 5242 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5243 | if (ifunc != NULL |
5244 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5245 | return FALSE; | |
5246 | } | |
727fc41e | 5247 | |
a33d1f77 | 5248 | switch (r_type) |
5bd4f169 | 5249 | { |
727fc41e AM |
5250 | case R_PPC64_TLSGD: |
5251 | case R_PPC64_TLSLD: | |
5252 | /* These special tls relocs tie a call to __tls_get_addr with | |
5253 | its parameter symbol. */ | |
5254 | break; | |
5255 | ||
411e1bfb AM |
5256 | case R_PPC64_GOT_TLSLD16: |
5257 | case R_PPC64_GOT_TLSLD16_LO: | |
5258 | case R_PPC64_GOT_TLSLD16_HI: | |
5259 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5260 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5261 | goto dogottls; |
5262 | ||
5263 | case R_PPC64_GOT_TLSGD16: | |
5264 | case R_PPC64_GOT_TLSGD16_LO: | |
5265 | case R_PPC64_GOT_TLSGD16_HI: | |
5266 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5267 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5268 | goto dogottls; |
5269 | ||
5270 | case R_PPC64_GOT_TPREL16_DS: | |
5271 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5272 | case R_PPC64_GOT_TPREL16_HI: | |
5273 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5274 | if (!info->executable) |
411e1bfb AM |
5275 | info->flags |= DF_STATIC_TLS; |
5276 | tls_type = TLS_TLS | TLS_TPREL; | |
5277 | goto dogottls; | |
5278 | ||
5279 | case R_PPC64_GOT_DTPREL16_DS: | |
5280 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5281 | case R_PPC64_GOT_DTPREL16_HI: | |
5282 | case R_PPC64_GOT_DTPREL16_HA: | |
5283 | tls_type = TLS_TLS | TLS_DTPREL; | |
5284 | dogottls: | |
5285 | sec->has_tls_reloc = 1; | |
5286 | /* Fall thru */ | |
5287 | ||
5bd4f169 | 5288 | case R_PPC64_GOT16: |
5bd4f169 | 5289 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5290 | case R_PPC64_GOT16_HA: |
5291 | case R_PPC64_GOT16_HI: | |
5292 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5293 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5294 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5295 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5296 | if (r_type == R_PPC64_GOT_TLSLD16 |
5297 | || r_type == R_PPC64_GOT_TLSGD16 | |
5298 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5299 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5300 | || r_type == R_PPC64_GOT16 | |
5301 | || r_type == R_PPC64_GOT16_DS) | |
5302 | { | |
5303 | htab->do_multi_toc = 1; | |
d77c8a4b | 5304 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5305 | } |
5306 | ||
e717da7e AM |
5307 | if (ppc64_elf_tdata (abfd)->got == NULL |
5308 | && !create_got_section (abfd, info)) | |
b34976b6 | 5309 | return FALSE; |
5bd4f169 AM |
5310 | |
5311 | if (h != NULL) | |
5312 | { | |
411e1bfb AM |
5313 | struct ppc_link_hash_entry *eh; |
5314 | struct got_entry *ent; | |
65f38f15 | 5315 | |
411e1bfb AM |
5316 | eh = (struct ppc_link_hash_entry *) h; |
5317 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5318 | if (ent->addend == rel->r_addend | |
e717da7e | 5319 | && ent->owner == abfd |
411e1bfb AM |
5320 | && ent->tls_type == tls_type) |
5321 | break; | |
5322 | if (ent == NULL) | |
5bd4f169 | 5323 | { |
411e1bfb | 5324 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5325 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5326 | if (ent == NULL) |
b34976b6 | 5327 | return FALSE; |
411e1bfb AM |
5328 | ent->next = eh->elf.got.glist; |
5329 | ent->addend = rel->r_addend; | |
e717da7e | 5330 | ent->owner = abfd; |
411e1bfb | 5331 | ent->tls_type = tls_type; |
927be08e | 5332 | ent->is_indirect = FALSE; |
411e1bfb AM |
5333 | ent->got.refcount = 0; |
5334 | eh->elf.got.glist = ent; | |
5bd4f169 | 5335 | } |
411e1bfb | 5336 | ent->got.refcount += 1; |
e7b938ca | 5337 | eh->tls_mask |= tls_type; |
5bd4f169 | 5338 | } |
411e1bfb AM |
5339 | else |
5340 | /* This is a global offset table entry for a local symbol. */ | |
5341 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5342 | rel->r_addend, tls_type)) | |
5343 | return FALSE; | |
a345bc8d AM |
5344 | |
5345 | /* We may also need a plt entry if the symbol turns out to be | |
5346 | an ifunc. */ | |
5347 | if (h != NULL && !info->shared && abiversion (abfd) == 2) | |
5348 | { | |
5349 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5350 | return FALSE; | |
5351 | } | |
5bd4f169 AM |
5352 | break; |
5353 | ||
5bd4f169 | 5354 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5355 | case R_PPC64_PLT16_HI: |
5356 | case R_PPC64_PLT16_LO: | |
5357 | case R_PPC64_PLT32: | |
5358 | case R_PPC64_PLT64: | |
5bd4f169 | 5359 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5360 | actually build the entry in adjust_dynamic_symbol, |
5361 | because this might be a case of linking PIC code without | |
5362 | linking in any dynamic objects, in which case we don't | |
5363 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5364 | if (h == NULL) |
5365 | { | |
5366 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5367 | table entry for a local symbol. */ |
5bd4f169 | 5368 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5369 | return FALSE; |
5bd4f169 | 5370 | } |
411e1bfb | 5371 | else |
e054468f AM |
5372 | { |
5373 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5374 | return FALSE; | |
5375 | h->needs_plt = 1; | |
5376 | if (h->root.root.string[0] == '.' | |
5377 | && h->root.root.string[1] != '\0') | |
5378 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5379 | } | |
5bd4f169 AM |
5380 | break; |
5381 | ||
5382 | /* The following relocations don't need to propagate the | |
5383 | relocation if linking a shared object since they are | |
5384 | section relative. */ | |
5385 | case R_PPC64_SECTOFF: | |
5386 | case R_PPC64_SECTOFF_LO: | |
5387 | case R_PPC64_SECTOFF_HI: | |
5388 | case R_PPC64_SECTOFF_HA: | |
5389 | case R_PPC64_SECTOFF_DS: | |
5390 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5391 | case R_PPC64_DTPREL16: |
5392 | case R_PPC64_DTPREL16_LO: | |
5393 | case R_PPC64_DTPREL16_HI: | |
5394 | case R_PPC64_DTPREL16_HA: | |
5395 | case R_PPC64_DTPREL16_DS: | |
5396 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5397 | case R_PPC64_DTPREL16_HIGH: |
5398 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5399 | case R_PPC64_DTPREL16_HIGHER: |
5400 | case R_PPC64_DTPREL16_HIGHERA: | |
5401 | case R_PPC64_DTPREL16_HIGHEST: | |
5402 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5403 | break; |
5404 | ||
ad8e1ba5 | 5405 | /* Nor do these. */ |
25f23106 AM |
5406 | case R_PPC64_REL16: |
5407 | case R_PPC64_REL16_LO: | |
5408 | case R_PPC64_REL16_HI: | |
5409 | case R_PPC64_REL16_HA: | |
5410 | break; | |
5411 | ||
ad8e1ba5 | 5412 | case R_PPC64_TOC16: |
33c0ec9d AM |
5413 | case R_PPC64_TOC16_DS: |
5414 | htab->do_multi_toc = 1; | |
d77c8a4b | 5415 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5416 | case R_PPC64_TOC16_LO: |
5417 | case R_PPC64_TOC16_HI: | |
5418 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5419 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5420 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5421 | break; |
5422 | ||
5bd4f169 AM |
5423 | /* This relocation describes the C++ object vtable hierarchy. |
5424 | Reconstruct it for later use during GC. */ | |
5425 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5426 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5427 | return FALSE; |
5bd4f169 AM |
5428 | break; |
5429 | ||
5430 | /* This relocation describes which C++ vtable entries are actually | |
5431 | used. Record for later use during GC. */ | |
5432 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5433 | BFD_ASSERT (h != NULL); |
5434 | if (h != NULL | |
5435 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5436 | return FALSE; |
5bd4f169 AM |
5437 | break; |
5438 | ||
721956f4 AM |
5439 | case R_PPC64_REL14: |
5440 | case R_PPC64_REL14_BRTAKEN: | |
5441 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5442 | { |
5443 | asection *dest = NULL; | |
5444 | ||
5445 | /* Heuristic: If jumping outside our section, chances are | |
5446 | we are going to need a stub. */ | |
5447 | if (h != NULL) | |
5448 | { | |
5449 | /* If the sym is weak it may be overridden later, so | |
5450 | don't assume we know where a weak sym lives. */ | |
5451 | if (h->root.type == bfd_link_hash_defined) | |
5452 | dest = h->root.u.def.section; | |
5453 | } | |
5454 | else | |
87d72d41 AM |
5455 | { |
5456 | Elf_Internal_Sym *isym; | |
5457 | ||
5458 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5459 | abfd, r_symndx); | |
5460 | if (isym == NULL) | |
5461 | return FALSE; | |
5462 | ||
5463 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5464 | } | |
5465 | ||
220c76dd | 5466 | if (dest != sec) |
7c8fe5c4 | 5467 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5468 | } |
721956f4 AM |
5469 | /* Fall through. */ |
5470 | ||
5d1634d7 | 5471 | case R_PPC64_REL24: |
e054468f | 5472 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5473 | { |
5474 | /* We may need a .plt entry if the function this reloc | |
5475 | refers to is in a shared lib. */ | |
e054468f | 5476 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5477 | return FALSE; |
e054468f AM |
5478 | h->needs_plt = 1; |
5479 | if (h->root.root.string[0] == '.' | |
5480 | && h->root.root.string[1] != '\0') | |
5481 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5482 | if (h == tga || h == dottga) |
411e1bfb | 5483 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5484 | } |
5485 | break; | |
5486 | ||
5487 | case R_PPC64_TPREL64: | |
5488 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5489 | if (!info->executable) |
411e1bfb AM |
5490 | info->flags |= DF_STATIC_TLS; |
5491 | goto dotlstoc; | |
5492 | ||
5493 | case R_PPC64_DTPMOD64: | |
5494 | if (rel + 1 < rel_end | |
5495 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5496 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5497 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5498 | else |
951fd09b | 5499 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5500 | goto dotlstoc; |
5501 | ||
5502 | case R_PPC64_DTPREL64: | |
5503 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5504 | if (rel != relocs | |
5505 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5506 | && rel[-1].r_offset == rel->r_offset - 8) | |
5507 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5508 | Don't mark with TLS_DTPREL. */ | |
5509 | goto dodyn; | |
5510 | ||
5511 | dotlstoc: | |
5512 | sec->has_tls_reloc = 1; | |
5513 | if (h != NULL) | |
5514 | { | |
5515 | struct ppc_link_hash_entry *eh; | |
5516 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5517 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5518 | } |
5519 | else | |
5520 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5521 | rel->r_addend, tls_type)) | |
5522 | return FALSE; | |
5523 | ||
7c8fe5c4 AM |
5524 | ppc64_sec = ppc64_elf_section_data (sec); |
5525 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5526 | { |
3a71aa26 AM |
5527 | bfd_size_type amt; |
5528 | ||
e7b938ca | 5529 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5530 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5531 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5532 | if (ppc64_sec->u.toc.symndx == NULL) | |
5533 | return FALSE; | |
5534 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5535 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5536 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5537 | return FALSE; |
7c8fe5c4 AM |
5538 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5539 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5540 | } |
5541 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5542 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5543 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5544 | |
5545 | /* Mark the second slot of a GD or LD entry. | |
5546 | -1 to indicate GD and -2 to indicate LD. */ | |
5547 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5548 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5549 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5550 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5551 | goto dodyn; |
5552 | ||
5553 | case R_PPC64_TPREL16: | |
5554 | case R_PPC64_TPREL16_LO: | |
5555 | case R_PPC64_TPREL16_HI: | |
5556 | case R_PPC64_TPREL16_HA: | |
5557 | case R_PPC64_TPREL16_DS: | |
5558 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5559 | case R_PPC64_TPREL16_HIGH: |
5560 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5561 | case R_PPC64_TPREL16_HIGHER: |
5562 | case R_PPC64_TPREL16_HIGHERA: | |
5563 | case R_PPC64_TPREL16_HIGHEST: | |
5564 | case R_PPC64_TPREL16_HIGHESTA: | |
5565 | if (info->shared) | |
5566 | { | |
1d483afe AM |
5567 | if (!info->executable) |
5568 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5569 | goto dodyn; |
5d1634d7 AM |
5570 | } |
5571 | break; | |
5572 | ||
e86ce104 | 5573 | case R_PPC64_ADDR64: |
1e2f5b6e | 5574 | if (opd_sym_map != NULL |
1e2f5b6e | 5575 | && rel + 1 < rel_end |
4ce794b7 | 5576 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5577 | { |
8387904d AM |
5578 | if (h != NULL) |
5579 | { | |
5580 | if (h->root.root.string[0] == '.' | |
5581 | && h->root.root.string[1] != 0 | |
b31867b6 | 5582 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5583 | ; |
5584 | else | |
5585 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5586 | } | |
5587 | else | |
5588 | { | |
5589 | asection *s; | |
87d72d41 | 5590 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5591 | |
87d72d41 AM |
5592 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5593 | abfd, r_symndx); | |
5594 | if (isym == NULL) | |
8387904d | 5595 | return FALSE; |
87d72d41 AM |
5596 | |
5597 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5598 | if (s != NULL && s != sec) | |
3f764659 | 5599 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5600 | } |
1e2f5b6e | 5601 | } |
e86ce104 AM |
5602 | /* Fall through. */ |
5603 | ||
65f38f15 AM |
5604 | case R_PPC64_ADDR16: |
5605 | case R_PPC64_ADDR16_DS: | |
5606 | case R_PPC64_ADDR16_HA: | |
5607 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5608 | case R_PPC64_ADDR16_HIGH: |
5609 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5610 | case R_PPC64_ADDR16_HIGHER: |
5611 | case R_PPC64_ADDR16_HIGHERA: | |
5612 | case R_PPC64_ADDR16_HIGHEST: | |
5613 | case R_PPC64_ADDR16_HIGHESTA: | |
5614 | case R_PPC64_ADDR16_LO: | |
5615 | case R_PPC64_ADDR16_LO_DS: | |
a345bc8d AM |
5616 | if (h != NULL && !info->shared && abiversion (abfd) == 2 |
5617 | && rel->r_addend == 0) | |
5618 | { | |
5619 | /* We may need a .plt entry if this reloc refers to a | |
5620 | function in a shared lib. */ | |
5621 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5622 | return FALSE; | |
5623 | h->pointer_equality_needed = 1; | |
5624 | } | |
5625 | /* Fall through. */ | |
5626 | ||
5627 | case R_PPC64_REL30: | |
5628 | case R_PPC64_REL32: | |
5629 | case R_PPC64_REL64: | |
5630 | case R_PPC64_ADDR14: | |
5631 | case R_PPC64_ADDR14_BRNTAKEN: | |
5632 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5633 | case R_PPC64_ADDR24: |
65f38f15 | 5634 | case R_PPC64_ADDR32: |
65f38f15 AM |
5635 | case R_PPC64_UADDR16: |
5636 | case R_PPC64_UADDR32: | |
5637 | case R_PPC64_UADDR64: | |
5bd4f169 | 5638 | case R_PPC64_TOC: |
81848ca0 AM |
5639 | if (h != NULL && !info->shared) |
5640 | /* We may need a copy reloc. */ | |
f5385ebf | 5641 | h->non_got_ref = 1; |
81848ca0 | 5642 | |
41bd81ab | 5643 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5644 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5645 | break; |
e86ce104 | 5646 | |
65f38f15 AM |
5647 | /* If we are creating a shared library, and this is a reloc |
5648 | against a global symbol, or a non PC relative reloc | |
5649 | against a local symbol, then we need to copy the reloc | |
5650 | into the shared library. However, if we are linking with | |
5651 | -Bsymbolic, we do not need to copy a reloc against a | |
5652 | global symbol which is defined in an object we are | |
5653 | including in the link (i.e., DEF_REGULAR is set). At | |
5654 | this point we have not seen all the input files, so it is | |
5655 | possible that DEF_REGULAR is not set now but will be set | |
5656 | later (it is never cleared). In case of a weak definition, | |
5657 | DEF_REGULAR may be cleared later by a strong definition in | |
5658 | a shared library. We account for that possibility below by | |
f4656909 | 5659 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5660 | table entry. A similar situation occurs when creating |
5661 | shared libraries and symbol visibility changes render the | |
5662 | symbol local. | |
5663 | ||
5664 | If on the other hand, we are creating an executable, we | |
5665 | may need to keep relocations for symbols satisfied by a | |
5666 | dynamic library if we manage to avoid copy relocs for the | |
5667 | symbol. */ | |
411e1bfb | 5668 | dodyn: |
65f38f15 | 5669 | if ((info->shared |
1d483afe | 5670 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5671 | || (h != NULL |
198f1157 | 5672 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5673 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5674 | || !h->def_regular)))) |
f4656909 AM |
5675 | || (ELIMINATE_COPY_RELOCS |
5676 | && !info->shared | |
65f38f15 AM |
5677 | && h != NULL |
5678 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5679 | || !h->def_regular)) |
5680 | || (!info->shared | |
5681 | && ifunc != NULL)) | |
5bd4f169 | 5682 | { |
65f38f15 AM |
5683 | /* We must copy these reloc types into the output file. |
5684 | Create a reloc section in dynobj and make room for | |
5685 | this reloc. */ | |
5bd4f169 AM |
5686 | if (sreloc == NULL) |
5687 | { | |
83bac4b0 NC |
5688 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5689 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5690 | |
5bd4f169 | 5691 | if (sreloc == NULL) |
83bac4b0 | 5692 | return FALSE; |
5bd4f169 AM |
5693 | } |
5694 | ||
65f38f15 AM |
5695 | /* If this is a global symbol, we count the number of |
5696 | relocations we need for this symbol. */ | |
5697 | if (h != NULL) | |
5698 | { | |
19e08130 AM |
5699 | struct elf_dyn_relocs *p; |
5700 | struct elf_dyn_relocs **head; | |
5701 | ||
ec338859 | 5702 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5703 | p = *head; |
5704 | if (p == NULL || p->sec != sec) | |
5705 | { | |
5706 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5707 | if (p == NULL) | |
5708 | return FALSE; | |
5709 | p->next = *head; | |
5710 | *head = p; | |
5711 | p->sec = sec; | |
5712 | p->count = 0; | |
5713 | p->pc_count = 0; | |
5714 | } | |
5715 | p->count += 1; | |
5716 | if (!must_be_dyn_reloc (info, r_type)) | |
5717 | p->pc_count += 1; | |
65f38f15 AM |
5718 | } |
5719 | else | |
5720 | { | |
ec338859 AM |
5721 | /* Track dynamic relocs needed for local syms too. |
5722 | We really need local syms available to do this | |
5723 | easily. Oh well. */ | |
19e08130 AM |
5724 | struct ppc_dyn_relocs *p; |
5725 | struct ppc_dyn_relocs **head; | |
5726 | bfd_boolean is_ifunc; | |
ec338859 | 5727 | asection *s; |
6edfbbad | 5728 | void *vpp; |
87d72d41 | 5729 | Elf_Internal_Sym *isym; |
6edfbbad | 5730 | |
87d72d41 AM |
5731 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5732 | abfd, r_symndx); | |
5733 | if (isym == NULL) | |
b34976b6 | 5734 | return FALSE; |
ec338859 | 5735 | |
87d72d41 AM |
5736 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5737 | if (s == NULL) | |
5738 | s = sec; | |
5739 | ||
6edfbbad | 5740 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5741 | head = (struct ppc_dyn_relocs **) vpp; |
5742 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5743 | p = *head; | |
5744 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5745 | p = p->next; | |
5746 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5747 | { | |
5748 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5749 | if (p == NULL) | |
5750 | return FALSE; | |
5751 | p->next = *head; | |
5752 | *head = p; | |
5753 | p->sec = sec; | |
5754 | p->ifunc = is_ifunc; | |
5755 | p->count = 0; | |
5756 | } | |
5757 | p->count += 1; | |
ec338859 | 5758 | } |
65f38f15 | 5759 | } |
5bd4f169 | 5760 | break; |
65f38f15 AM |
5761 | |
5762 | default: | |
96e0dda4 | 5763 | break; |
5bd4f169 AM |
5764 | } |
5765 | } | |
5766 | ||
b34976b6 | 5767 | return TRUE; |
5bd4f169 AM |
5768 | } |
5769 | ||
ee67d69a AM |
5770 | /* Merge backend specific data from an object file to the output |
5771 | object file when linking. */ | |
5772 | ||
5773 | static bfd_boolean | |
5774 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5775 | { | |
5776 | unsigned long iflags, oflags; | |
5777 | ||
5778 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5779 | return TRUE; | |
5780 | ||
5781 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5782 | return TRUE; | |
5783 | ||
5784 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5785 | return FALSE; | |
5786 | ||
5787 | iflags = elf_elfheader (ibfd)->e_flags; | |
5788 | oflags = elf_elfheader (obfd)->e_flags; | |
5789 | ||
5790 | if (!elf_flags_init (obfd) || oflags == 0) | |
5791 | { | |
5792 | elf_flags_init (obfd) = TRUE; | |
5793 | elf_elfheader (obfd)->e_flags = iflags; | |
5794 | } | |
5795 | else if (iflags == oflags || iflags == 0) | |
5796 | ; | |
5797 | else if (iflags & ~EF_PPC64_ABI) | |
5798 | { | |
5799 | (*_bfd_error_handler) | |
5800 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5801 | bfd_set_error (bfd_error_bad_value); | |
5802 | return FALSE; | |
5803 | } | |
5804 | else | |
5805 | { | |
5806 | (*_bfd_error_handler) | |
5807 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5808 | ibfd, iflags, oflags); | |
5809 | bfd_set_error (bfd_error_bad_value); | |
5810 | return FALSE; | |
5811 | } | |
5812 | ||
5813 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5814 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5815 | ||
5816 | return TRUE; | |
5817 | } | |
5818 | ||
5819 | static bfd_boolean | |
5820 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5821 | { | |
5822 | /* Print normal ELF private data. */ | |
5823 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5824 | ||
5825 | if (elf_elfheader (abfd)->e_flags != 0) | |
5826 | { | |
5827 | FILE *file = ptr; | |
5828 | ||
5829 | /* xgettext:c-format */ | |
5830 | fprintf (file, _("private flags = 0x%lx:"), | |
5831 | elf_elfheader (abfd)->e_flags); | |
5832 | ||
5833 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5834 | fprintf (file, _(" [abiv%ld]"), | |
5835 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5836 | fputc ('\n', file); | |
5837 | } | |
5838 | ||
5839 | return TRUE; | |
5840 | } | |
5841 | ||
8387904d AM |
5842 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5843 | of the code entry point, and its section. */ | |
5844 | ||
5845 | static bfd_vma | |
5846 | opd_entry_value (asection *opd_sec, | |
5847 | bfd_vma offset, | |
5848 | asection **code_sec, | |
aef36ac1 AM |
5849 | bfd_vma *code_off, |
5850 | bfd_boolean in_code_sec) | |
8387904d AM |
5851 | { |
5852 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5853 | Elf_Internal_Rela *relocs; |
8387904d | 5854 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5855 | bfd_vma val; |
8387904d | 5856 | |
9f296da3 AM |
5857 | /* No relocs implies we are linking a --just-symbols object, or looking |
5858 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5859 | if (opd_sec->reloc_count == 0) |
5860 | { | |
729eabd5 | 5861 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5862 | |
729eabd5 AM |
5863 | if (contents == NULL) |
5864 | { | |
5865 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5866 | return (bfd_vma) -1; | |
5867 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5868 | } | |
ee1e4ede | 5869 | |
729eabd5 | 5870 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5871 | if (code_sec != NULL) |
5872 | { | |
5873 | asection *sec, *likely = NULL; | |
ee1e4ede | 5874 | |
aef36ac1 | 5875 | if (in_code_sec) |
4b85d634 | 5876 | { |
aef36ac1 AM |
5877 | sec = *code_sec; |
5878 | if (sec->vma <= val | |
5879 | && val < sec->vma + sec->size) | |
5880 | likely = sec; | |
5881 | else | |
5882 | val = -1; | |
5883 | } | |
5884 | else | |
5885 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5886 | if (sec->vma <= val | |
5887 | && (sec->flags & SEC_LOAD) != 0 | |
5888 | && (sec->flags & SEC_ALLOC) != 0) | |
5889 | likely = sec; | |
5890 | if (likely != NULL) | |
5891 | { | |
5892 | *code_sec = likely; | |
5893 | if (code_off != NULL) | |
5894 | *code_off = val - likely->vma; | |
4b85d634 AM |
5895 | } |
5896 | } | |
aef36ac1 | 5897 | return val; |
4b85d634 AM |
5898 | } |
5899 | ||
0c8d6e5c | 5900 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5901 | |
729eabd5 | 5902 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5903 | if (relocs == NULL) |
5904 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5905 | |
8387904d | 5906 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5907 | lo = relocs; |
8387904d AM |
5908 | BFD_ASSERT (lo != NULL); |
5909 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5910 | val = (bfd_vma) -1; |
8387904d AM |
5911 | while (lo < hi) |
5912 | { | |
5913 | look = lo + (hi - lo) / 2; | |
5914 | if (look->r_offset < offset) | |
5915 | lo = look + 1; | |
5916 | else if (look->r_offset > offset) | |
5917 | hi = look; | |
5918 | else | |
5919 | { | |
0ffa91dd NC |
5920 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5921 | ||
8387904d AM |
5922 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5923 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5924 | { | |
5925 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5926 | asection *sec; |
5927 | ||
62599110 AM |
5928 | if (symndx < symtab_hdr->sh_info |
5929 | || elf_sym_hashes (opd_bfd) == NULL) | |
8387904d AM |
5930 | { |
5931 | Elf_Internal_Sym *sym; | |
5932 | ||
5933 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5934 | if (sym == NULL) | |
5935 | { | |
62599110 AM |
5936 | size_t symcnt = symtab_hdr->sh_info; |
5937 | if (elf_sym_hashes (opd_bfd) == NULL) | |
5938 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
5939 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
8387904d AM |
5940 | 0, NULL, NULL, NULL); |
5941 | if (sym == NULL) | |
645ea6a9 | 5942 | break; |
8387904d AM |
5943 | symtab_hdr->contents = (bfd_byte *) sym; |
5944 | } | |
5945 | ||
5946 | sym += symndx; | |
5947 | val = sym->st_value; | |
cb33740c | 5948 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5949 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5950 | } | |
5951 | else | |
5952 | { | |
5953 | struct elf_link_hash_entry **sym_hashes; | |
5954 | struct elf_link_hash_entry *rh; | |
5955 | ||
5956 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5957 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5958 | if (rh != NULL) |
5959 | { | |
5960 | rh = elf_follow_link (rh); | |
5961 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5962 | || rh->root.type == bfd_link_hash_defweak); | |
5963 | val = rh->root.u.def.value; | |
5964 | sec = rh->root.u.def.section; | |
5965 | } | |
5966 | else | |
5967 | { | |
5968 | /* Handle the odd case where we can be called | |
5969 | during bfd_elf_link_add_symbols before the | |
5970 | symbol hashes have been fully populated. */ | |
5971 | Elf_Internal_Sym *sym; | |
5972 | ||
5973 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
5974 | symndx, NULL, NULL, NULL); | |
5975 | if (sym == NULL) | |
5976 | break; | |
5977 | ||
5978 | val = sym->st_value; | |
5979 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5980 | free (sym); | |
5981 | } | |
8387904d AM |
5982 | } |
5983 | val += look->r_addend; | |
5984 | if (code_off != NULL) | |
5985 | *code_off = val; | |
5986 | if (code_sec != NULL) | |
aef36ac1 AM |
5987 | { |
5988 | if (in_code_sec && *code_sec != sec) | |
5989 | return -1; | |
5990 | else | |
5991 | *code_sec = sec; | |
5992 | } | |
8387904d AM |
5993 | if (sec != NULL && sec->output_section != NULL) |
5994 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5995 | } |
5996 | break; | |
5997 | } | |
5998 | } | |
645ea6a9 | 5999 | |
645ea6a9 | 6000 | return val; |
8387904d AM |
6001 | } |
6002 | ||
aef36ac1 AM |
6003 | /* If the ELF symbol SYM might be a function in SEC, return the |
6004 | function size and set *CODE_OFF to the function's entry point, | |
6005 | otherwise return zero. */ | |
9f296da3 | 6006 | |
aef36ac1 AM |
6007 | static bfd_size_type |
6008 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6009 | bfd_vma *code_off) | |
9f296da3 | 6010 | { |
aef36ac1 AM |
6011 | bfd_size_type size; |
6012 | ||
6013 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6014 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6015 | return 0; | |
6016 | ||
6017 | size = 0; | |
6018 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6019 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6020 | ||
6021 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6022 | { |
aef36ac1 AM |
6023 | if (opd_entry_value (sym->section, sym->value, |
6024 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
6025 | return 0; | |
6026 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6027 | symbol. This size has nothing to do with the code size of the | |
6028 | function, which is what we're supposed to return, but the | |
6029 | code size isn't available without looking up the dot-sym. | |
6030 | However, doing that would be a waste of time particularly | |
6031 | since elf_find_function will look at the dot-sym anyway. | |
6032 | Now, elf_find_function will keep the largest size of any | |
6033 | function sym found at the code address of interest, so return | |
6034 | 1 here to avoid it incorrectly caching a larger function size | |
6035 | for a small function. This does mean we return the wrong | |
6036 | size for a new-ABI function of size 24, but all that does is | |
6037 | disable caching for such functions. */ | |
6038 | if (size == 24) | |
6039 | size = 1; | |
9f296da3 | 6040 | } |
aef36ac1 AM |
6041 | else |
6042 | { | |
6043 | if (sym->section != sec) | |
6044 | return 0; | |
6045 | *code_off = sym->value; | |
6046 | } | |
6047 | if (size == 0) | |
6048 | size = 1; | |
6049 | return size; | |
9f296da3 AM |
6050 | } |
6051 | ||
854b41e7 AM |
6052 | /* Return true if symbol is defined in a regular object file. */ |
6053 | ||
6054 | static bfd_boolean | |
6055 | is_static_defined (struct elf_link_hash_entry *h) | |
6056 | { | |
6057 | return ((h->root.type == bfd_link_hash_defined | |
6058 | || h->root.type == bfd_link_hash_defweak) | |
6059 | && h->root.u.def.section != NULL | |
6060 | && h->root.u.def.section->output_section != NULL); | |
6061 | } | |
6062 | ||
b31867b6 AM |
6063 | /* If FDH is a function descriptor symbol, return the associated code |
6064 | entry symbol if it is defined. Return NULL otherwise. */ | |
6065 | ||
6066 | static struct ppc_link_hash_entry * | |
6067 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6068 | { | |
6069 | if (fdh->is_func_descriptor) | |
6070 | { | |
6071 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6072 | if (fh->elf.root.type == bfd_link_hash_defined | |
6073 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6074 | return fh; | |
6075 | } | |
6076 | return NULL; | |
6077 | } | |
6078 | ||
6079 | /* If FH is a function code entry symbol, return the associated | |
6080 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6081 | ||
6082 | static struct ppc_link_hash_entry * | |
6083 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6084 | { | |
6085 | if (fh->oh != NULL | |
6086 | && fh->oh->is_func_descriptor) | |
6087 | { | |
6088 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6089 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6090 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6091 | return fdh; | |
6092 | } | |
6093 | return NULL; | |
6094 | } | |
6095 | ||
74f0fb50 AM |
6096 | /* Mark all our entry sym sections, both opd and code section. */ |
6097 | ||
6098 | static void | |
6099 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6100 | { | |
6101 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6102 | struct bfd_sym_chain *sym; | |
6103 | ||
4dfe6ac6 NC |
6104 | if (htab == NULL) |
6105 | return; | |
6106 | ||
74f0fb50 AM |
6107 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6108 | { | |
b31867b6 | 6109 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6110 | asection *sec; |
6111 | ||
6112 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6113 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6114 | if (eh == NULL) |
6115 | continue; | |
6116 | if (eh->elf.root.type != bfd_link_hash_defined | |
6117 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6118 | continue; | |
6119 | ||
b31867b6 AM |
6120 | fh = defined_code_entry (eh); |
6121 | if (fh != NULL) | |
74f0fb50 | 6122 | { |
b31867b6 | 6123 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6124 | sec->flags |= SEC_KEEP; |
6125 | } | |
6126 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6127 | && opd_entry_value (eh->elf.root.u.def.section, | |
6128 | eh->elf.root.u.def.value, | |
aef36ac1 | 6129 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6130 | sec->flags |= SEC_KEEP; |
6131 | ||
6132 | sec = eh->elf.root.u.def.section; | |
6133 | sec->flags |= SEC_KEEP; | |
6134 | } | |
6135 | } | |
6136 | ||
64d03ab5 AM |
6137 | /* Mark sections containing dynamically referenced symbols. When |
6138 | building shared libraries, we must assume that any visible symbol is | |
6139 | referenced. */ | |
6140 | ||
6141 | static bfd_boolean | |
6142 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6143 | { | |
6144 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6145 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6146 | struct ppc_link_hash_entry *fdh; |
64d03ab5 | 6147 | |
64d03ab5 | 6148 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6149 | fdh = defined_func_desc (eh); |
6150 | if (fdh != NULL) | |
6151 | eh = fdh; | |
64d03ab5 AM |
6152 | |
6153 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6154 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6155 | && (eh->elf.ref_dynamic | |
6156 | || (!info->executable | |
6157 | && eh->elf.def_regular | |
6158 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
4c58e0d8 AM |
6159 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
6160 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
6161 | || !bfd_hide_sym_by_version (info->version_info, | |
6162 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6163 | { |
6164 | asection *code_sec; | |
b31867b6 | 6165 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6166 | |
6167 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6168 | ||
6169 | /* Function descriptor syms cause the associated | |
6170 | function code sym section to be marked. */ | |
b31867b6 AM |
6171 | fh = defined_code_entry (eh); |
6172 | if (fh != NULL) | |
6173 | { | |
6174 | code_sec = fh->elf.root.u.def.section; | |
6175 | code_sec->flags |= SEC_KEEP; | |
6176 | } | |
64d03ab5 AM |
6177 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6178 | && opd_entry_value (eh->elf.root.u.def.section, | |
6179 | eh->elf.root.u.def.value, | |
aef36ac1 | 6180 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6181 | code_sec->flags |= SEC_KEEP; |
6182 | } | |
6183 | ||
6184 | return TRUE; | |
6185 | } | |
6186 | ||
5bd4f169 AM |
6187 | /* Return the section that should be marked against GC for a given |
6188 | relocation. */ | |
6189 | ||
6190 | static asection * | |
4ce794b7 | 6191 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6192 | struct bfd_link_info *info, |
4ce794b7 AM |
6193 | Elf_Internal_Rela *rel, |
6194 | struct elf_link_hash_entry *h, | |
6195 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6196 | { |
ccfa59ea AM |
6197 | asection *rsec; |
6198 | ||
ccfa59ea AM |
6199 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6200 | function sections, as all functions are referenced in .opd. */ | |
6201 | rsec = NULL; | |
6202 | if (get_opd_info (sec) != NULL) | |
6203 | return rsec; | |
1e2f5b6e | 6204 | |
5bd4f169 AM |
6205 | if (h != NULL) |
6206 | { | |
04c9666a | 6207 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6208 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6209 | |
4ce794b7 | 6210 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6211 | switch (r_type) |
5bd4f169 AM |
6212 | { |
6213 | case R_PPC64_GNU_VTINHERIT: | |
6214 | case R_PPC64_GNU_VTENTRY: | |
6215 | break; | |
6216 | ||
6217 | default: | |
6218 | switch (h->root.type) | |
6219 | { | |
6220 | case bfd_link_hash_defined: | |
6221 | case bfd_link_hash_defweak: | |
ccfa59ea | 6222 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6223 | fdh = defined_func_desc (eh); |
6224 | if (fdh != NULL) | |
6225 | eh = fdh; | |
1e2f5b6e AM |
6226 | |
6227 | /* Function descriptor syms cause the associated | |
6228 | function code sym section to be marked. */ | |
b31867b6 AM |
6229 | fh = defined_code_entry (eh); |
6230 | if (fh != NULL) | |
ccfa59ea AM |
6231 | { |
6232 | /* They also mark their opd section. */ | |
74f0fb50 | 6233 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6234 | |
b31867b6 | 6235 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6236 | } |
8387904d AM |
6237 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6238 | && opd_entry_value (eh->elf.root.u.def.section, | |
6239 | eh->elf.root.u.def.value, | |
aef36ac1 | 6240 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6241 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6242 | else |
1e2f5b6e AM |
6243 | rsec = h->root.u.def.section; |
6244 | break; | |
5bd4f169 AM |
6245 | |
6246 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6247 | rsec = h->root.u.c.p->section; |
6248 | break; | |
5bd4f169 AM |
6249 | |
6250 | default: | |
fb34365b | 6251 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6252 | } |
6253 | } | |
6254 | } | |
6255 | else | |
6256 | { | |
74f0fb50 | 6257 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6258 | |
6259 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6260 | opd = get_opd_info (rsec); |
6261 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6262 | { |
74f0fb50 | 6263 | rsec->gc_mark = 1; |
ccfa59ea | 6264 | |
74f0fb50 | 6265 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 6266 | } |
5bd4f169 AM |
6267 | } |
6268 | ||
1e2f5b6e | 6269 | return rsec; |
5bd4f169 AM |
6270 | } |
6271 | ||
65f38f15 AM |
6272 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6273 | section being removed. */ | |
5bd4f169 | 6274 | |
b34976b6 | 6275 | static bfd_boolean |
4ce794b7 AM |
6276 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6277 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6278 | { |
411e1bfb | 6279 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6280 | Elf_Internal_Shdr *symtab_hdr; |
6281 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6282 | struct got_entry **local_got_ents; |
5bd4f169 | 6283 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6284 | |
7dda2462 TG |
6285 | if (info->relocatable) |
6286 | return TRUE; | |
6287 | ||
680a3378 AM |
6288 | if ((sec->flags & SEC_ALLOC) == 0) |
6289 | return TRUE; | |
6290 | ||
ec338859 AM |
6291 | elf_section_data (sec)->local_dynrel = NULL; |
6292 | ||
411e1bfb | 6293 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6294 | if (htab == NULL) |
6295 | return FALSE; | |
6296 | ||
0ffa91dd | 6297 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6298 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6299 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6300 | |
6301 | relend = relocs + sec->reloc_count; | |
6302 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6303 | { |
6304 | unsigned long r_symndx; | |
04c9666a | 6305 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6306 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6307 | unsigned char tls_type = 0; |
5bd4f169 | 6308 | |
a33d1f77 | 6309 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6310 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6311 | if (r_symndx >= symtab_hdr->sh_info) |
6312 | { | |
6313 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6314 | struct elf_dyn_relocs **pp; |
6315 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6316 | |
6317 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6318 | h = elf_follow_link (h); |
58ac9f71 AM |
6319 | eh = (struct ppc_link_hash_entry *) h; |
6320 | ||
6321 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6322 | if (p->sec == sec) | |
6323 | { | |
6324 | /* Everything must go for SEC. */ | |
6325 | *pp = p->next; | |
6326 | break; | |
6327 | } | |
6328 | } | |
6329 | ||
e054468f AM |
6330 | if (is_branch_reloc (r_type)) |
6331 | { | |
6332 | struct plt_entry **ifunc = NULL; | |
6333 | if (h != NULL) | |
6334 | { | |
6335 | if (h->type == STT_GNU_IFUNC) | |
6336 | ifunc = &h->plt.plist; | |
6337 | } | |
6338 | else if (local_got_ents != NULL) | |
6339 | { | |
6340 | struct plt_entry **local_plt = (struct plt_entry **) | |
6341 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6342 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6343 | (local_plt + symtab_hdr->sh_info); |
6344 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6345 | ifunc = local_plt + r_symndx; | |
6346 | } | |
6347 | if (ifunc != NULL) | |
6348 | { | |
6349 | struct plt_entry *ent; | |
6350 | ||
6351 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6352 | if (ent->addend == rel->r_addend) | |
6353 | break; | |
6354 | if (ent == NULL) | |
6355 | abort (); | |
6356 | if (ent->plt.refcount > 0) | |
6357 | ent->plt.refcount -= 1; | |
6358 | continue; | |
6359 | } | |
6360 | } | |
6361 | ||
a33d1f77 AM |
6362 | switch (r_type) |
6363 | { | |
411e1bfb AM |
6364 | case R_PPC64_GOT_TLSLD16: |
6365 | case R_PPC64_GOT_TLSLD16_LO: | |
6366 | case R_PPC64_GOT_TLSLD16_HI: | |
6367 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6368 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6369 | goto dogot; |
6370 | ||
6371 | case R_PPC64_GOT_TLSGD16: | |
6372 | case R_PPC64_GOT_TLSGD16_LO: | |
6373 | case R_PPC64_GOT_TLSGD16_HI: | |
6374 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6375 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6376 | goto dogot; |
6377 | ||
6378 | case R_PPC64_GOT_TPREL16_DS: | |
6379 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6380 | case R_PPC64_GOT_TPREL16_HI: | |
6381 | case R_PPC64_GOT_TPREL16_HA: | |
6382 | tls_type = TLS_TLS | TLS_TPREL; | |
6383 | goto dogot; | |
6384 | ||
6385 | case R_PPC64_GOT_DTPREL16_DS: | |
6386 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6387 | case R_PPC64_GOT_DTPREL16_HI: | |
6388 | case R_PPC64_GOT_DTPREL16_HA: | |
6389 | tls_type = TLS_TLS | TLS_DTPREL; | |
6390 | goto dogot; | |
6391 | ||
a33d1f77 AM |
6392 | case R_PPC64_GOT16: |
6393 | case R_PPC64_GOT16_DS: | |
6394 | case R_PPC64_GOT16_HA: | |
6395 | case R_PPC64_GOT16_HI: | |
6396 | case R_PPC64_GOT16_LO: | |
6397 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6398 | dogot: |
6399 | { | |
6400 | struct got_entry *ent; | |
6401 | ||
58ac9f71 AM |
6402 | if (h != NULL) |
6403 | ent = h->got.glist; | |
411e1bfb AM |
6404 | else |
6405 | ent = local_got_ents[r_symndx]; | |
6406 | ||
6407 | for (; ent != NULL; ent = ent->next) | |
6408 | if (ent->addend == rel->r_addend | |
e717da7e | 6409 | && ent->owner == abfd |
411e1bfb AM |
6410 | && ent->tls_type == tls_type) |
6411 | break; | |
6412 | if (ent == NULL) | |
6413 | abort (); | |
6414 | if (ent->got.refcount > 0) | |
6415 | ent->got.refcount -= 1; | |
6416 | } | |
a33d1f77 | 6417 | break; |
65f38f15 | 6418 | |
a33d1f77 AM |
6419 | case R_PPC64_PLT16_HA: |
6420 | case R_PPC64_PLT16_HI: | |
6421 | case R_PPC64_PLT16_LO: | |
6422 | case R_PPC64_PLT32: | |
6423 | case R_PPC64_PLT64: | |
721956f4 AM |
6424 | case R_PPC64_REL14: |
6425 | case R_PPC64_REL14_BRNTAKEN: | |
6426 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6427 | case R_PPC64_REL24: |
58ac9f71 | 6428 | if (h != NULL) |
5d1634d7 | 6429 | { |
411e1bfb AM |
6430 | struct plt_entry *ent; |
6431 | ||
411e1bfb AM |
6432 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6433 | if (ent->addend == rel->r_addend) | |
6434 | break; | |
7c6c1722 | 6435 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6436 | ent->plt.refcount -= 1; |
5d1634d7 | 6437 | } |
e86ce104 | 6438 | break; |
5d1634d7 | 6439 | |
a33d1f77 AM |
6440 | default: |
6441 | break; | |
6442 | } | |
6443 | } | |
b34976b6 | 6444 | return TRUE; |
5bd4f169 AM |
6445 | } |
6446 | ||
deb0e272 AM |
6447 | /* The maximum size of .sfpr. */ |
6448 | #define SFPR_MAX (218*4) | |
6449 | ||
6450 | struct sfpr_def_parms | |
6451 | { | |
699733f6 AM |
6452 | const char name[12]; |
6453 | unsigned char lo, hi; | |
deb0e272 AM |
6454 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6455 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6456 | }; | |
6457 | ||
6458 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6459 | ||
4dfe6ac6 | 6460 | static bfd_boolean |
deb0e272 AM |
6461 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6462 | { | |
6463 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6464 | unsigned int i; | |
6465 | size_t len = strlen (parm->name); | |
6466 | bfd_boolean writing = FALSE; | |
699733f6 | 6467 | char sym[16]; |
deb0e272 | 6468 | |
4dfe6ac6 NC |
6469 | if (htab == NULL) |
6470 | return FALSE; | |
6471 | ||
deb0e272 AM |
6472 | memcpy (sym, parm->name, len); |
6473 | sym[len + 2] = 0; | |
6474 | ||
6475 | for (i = parm->lo; i <= parm->hi; i++) | |
6476 | { | |
6477 | struct elf_link_hash_entry *h; | |
6478 | ||
6479 | sym[len + 0] = i / 10 + '0'; | |
6480 | sym[len + 1] = i % 10 + '0'; | |
6481 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6482 | if (h != NULL | |
f5385ebf | 6483 | && !h->def_regular) |
deb0e272 AM |
6484 | { |
6485 | h->root.type = bfd_link_hash_defined; | |
6486 | h->root.u.def.section = htab->sfpr; | |
6487 | h->root.u.def.value = htab->sfpr->size; | |
6488 | h->type = STT_FUNC; | |
f5385ebf | 6489 | h->def_regular = 1; |
deb0e272 AM |
6490 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6491 | writing = TRUE; | |
6492 | if (htab->sfpr->contents == NULL) | |
6493 | { | |
6494 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6495 | if (htab->sfpr->contents == NULL) | |
6496 | return FALSE; | |
6497 | } | |
6498 | } | |
6499 | if (writing) | |
6500 | { | |
6501 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6502 | if (i != parm->hi) | |
6503 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6504 | else | |
6505 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6506 | htab->sfpr->size = p - htab->sfpr->contents; | |
6507 | } | |
6508 | } | |
6509 | ||
6510 | return TRUE; | |
6511 | } | |
6512 | ||
6513 | static bfd_byte * | |
6514 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6515 | { | |
6516 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6517 | return p + 4; | |
6518 | } | |
6519 | ||
6520 | static bfd_byte * | |
6521 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6522 | { | |
6523 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6524 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6525 | p = p + 4; |
6526 | bfd_put_32 (abfd, BLR, p); | |
6527 | return p + 4; | |
6528 | } | |
6529 | ||
6530 | static bfd_byte * | |
6531 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6532 | { | |
6533 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6534 | return p + 4; | |
6535 | } | |
6536 | ||
6537 | static bfd_byte * | |
6538 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6539 | { | |
a078d95a | 6540 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6541 | p = p + 4; |
6542 | p = restgpr0 (abfd, p, r); | |
6543 | bfd_put_32 (abfd, MTLR_R0, p); | |
6544 | p = p + 4; | |
6545 | if (r == 29) | |
6546 | { | |
6547 | p = restgpr0 (abfd, p, 30); | |
6548 | p = restgpr0 (abfd, p, 31); | |
6549 | } | |
6550 | bfd_put_32 (abfd, BLR, p); | |
6551 | return p + 4; | |
6552 | } | |
6553 | ||
6554 | static bfd_byte * | |
6555 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6556 | { | |
6557 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6558 | return p + 4; | |
6559 | } | |
6560 | ||
6561 | static bfd_byte * | |
6562 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6563 | { | |
6564 | p = savegpr1 (abfd, p, r); | |
6565 | bfd_put_32 (abfd, BLR, p); | |
6566 | return p + 4; | |
6567 | } | |
6568 | ||
6569 | static bfd_byte * | |
6570 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6571 | { | |
6572 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6573 | return p + 4; | |
6574 | } | |
6575 | ||
6576 | static bfd_byte * | |
6577 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6578 | { | |
6579 | p = restgpr1 (abfd, p, r); | |
6580 | bfd_put_32 (abfd, BLR, p); | |
6581 | return p + 4; | |
6582 | } | |
6583 | ||
6584 | static bfd_byte * | |
6585 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6586 | { | |
6587 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6588 | return p + 4; | |
6589 | } | |
6590 | ||
6591 | static bfd_byte * | |
6592 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6593 | { | |
6594 | p = savefpr (abfd, p, r); | |
a078d95a | 6595 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6596 | p = p + 4; |
6597 | bfd_put_32 (abfd, BLR, p); | |
6598 | return p + 4; | |
6599 | } | |
6600 | ||
6601 | static bfd_byte * | |
6602 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6603 | { | |
6604 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6605 | return p + 4; | |
6606 | } | |
6607 | ||
6608 | static bfd_byte * | |
6609 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6610 | { | |
a078d95a | 6611 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6612 | p = p + 4; |
6613 | p = restfpr (abfd, p, r); | |
6614 | bfd_put_32 (abfd, MTLR_R0, p); | |
6615 | p = p + 4; | |
6616 | if (r == 29) | |
6617 | { | |
6618 | p = restfpr (abfd, p, 30); | |
6619 | p = restfpr (abfd, p, 31); | |
6620 | } | |
6621 | bfd_put_32 (abfd, BLR, p); | |
6622 | return p + 4; | |
6623 | } | |
6624 | ||
6625 | static bfd_byte * | |
6626 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6627 | { | |
6628 | p = savefpr (abfd, p, r); | |
6629 | bfd_put_32 (abfd, BLR, p); | |
6630 | return p + 4; | |
6631 | } | |
6632 | ||
6633 | static bfd_byte * | |
6634 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6635 | { | |
6636 | p = restfpr (abfd, p, r); | |
6637 | bfd_put_32 (abfd, BLR, p); | |
6638 | return p + 4; | |
6639 | } | |
6640 | ||
6641 | static bfd_byte * | |
6642 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6643 | { | |
6644 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6645 | p = p + 4; | |
6646 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6647 | return p + 4; | |
6648 | } | |
6649 | ||
6650 | static bfd_byte * | |
6651 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6652 | { | |
6653 | p = savevr (abfd, p, r); | |
6654 | bfd_put_32 (abfd, BLR, p); | |
6655 | return p + 4; | |
6656 | } | |
6657 | ||
6658 | static bfd_byte * | |
6659 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6660 | { | |
6661 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6662 | p = p + 4; | |
6663 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6664 | return p + 4; | |
6665 | } | |
6666 | ||
6667 | static bfd_byte * | |
6668 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6669 | { | |
6670 | p = restvr (abfd, p, r); | |
6671 | bfd_put_32 (abfd, BLR, p); | |
6672 | return p + 4; | |
6673 | } | |
6674 | ||
e86ce104 AM |
6675 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6676 | information on function code symbol entries to their corresponding | |
6677 | function descriptor symbol entries. */ | |
deb0e272 | 6678 | |
b34976b6 | 6679 | static bfd_boolean |
4ce794b7 | 6680 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6681 | { |
e86ce104 | 6682 | struct bfd_link_info *info; |
65f38f15 | 6683 | struct ppc_link_hash_table *htab; |
411e1bfb | 6684 | struct plt_entry *ent; |
50bc7936 AM |
6685 | struct ppc_link_hash_entry *fh; |
6686 | struct ppc_link_hash_entry *fdh; | |
6687 | bfd_boolean force_local; | |
5bd4f169 | 6688 | |
50bc7936 AM |
6689 | fh = (struct ppc_link_hash_entry *) h; |
6690 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6691 | return TRUE; |
e86ce104 | 6692 | |
4ce794b7 | 6693 | info = inf; |
65f38f15 | 6694 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6695 | if (htab == NULL) |
6696 | return FALSE; | |
5bd4f169 | 6697 | |
c09bdfe5 AM |
6698 | /* Resolve undefined references to dot-symbols as the value |
6699 | in the function descriptor, if we have one in a regular object. | |
6700 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6701 | in dynamic objects are handled elsewhere. */ | |
6702 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6703 | && fh->was_undefined | |
b31867b6 AM |
6704 | && (fdh = defined_func_desc (fh)) != NULL |
6705 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6706 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6707 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6708 | &fh->elf.root.u.def.section, |
aef36ac1 | 6709 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6710 | { |
b31867b6 | 6711 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6712 | fh->elf.forced_local = 1; |
b31867b6 AM |
6713 | fh->elf.def_regular = fdh->elf.def_regular; |
6714 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6715 | } |
6716 | ||
e86ce104 AM |
6717 | /* If this is a function code symbol, transfer dynamic linking |
6718 | information to the function descriptor symbol. */ | |
50bc7936 | 6719 | if (!fh->is_func) |
b34976b6 | 6720 | return TRUE; |
e86ce104 | 6721 | |
50bc7936 | 6722 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6723 | if (ent->plt.refcount > 0) |
6724 | break; | |
50bc7936 AM |
6725 | if (ent == NULL |
6726 | || fh->elf.root.root.string[0] != '.' | |
6727 | || fh->elf.root.root.string[1] == '\0') | |
6728 | return TRUE; | |
5bd4f169 | 6729 | |
50bc7936 AM |
6730 | /* Find the corresponding function descriptor symbol. Create it |
6731 | as undefined if necessary. */ | |
5bd4f169 | 6732 | |
b31867b6 | 6733 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6734 | if (fdh == NULL |
df131623 | 6735 | && !info->executable |
50bc7936 AM |
6736 | && (fh->elf.root.type == bfd_link_hash_undefined |
6737 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6738 | { | |
908b32fc | 6739 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6740 | if (fdh == NULL) |
6741 | return FALSE; | |
50bc7936 | 6742 | } |
648cca2c | 6743 | |
908b32fc | 6744 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6745 | code symbol is strong undefined, make the fake sym the same. |
6746 | If the function code symbol is defined, then force the fake | |
6747 | descriptor local; We can't support overriding of symbols in a | |
6748 | shared library on a fake descriptor. */ | |
908b32fc AM |
6749 | |
6750 | if (fdh != NULL | |
6751 | && fdh->fake | |
433817dd | 6752 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6753 | { |
433817dd AM |
6754 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6755 | { | |
6756 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6757 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6758 | } | |
6759 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6760 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6761 | { | |
6762 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6763 | } | |
908b32fc AM |
6764 | } |
6765 | ||
50bc7936 | 6766 | if (fdh != NULL |
f5385ebf | 6767 | && !fdh->elf.forced_local |
df131623 | 6768 | && (!info->executable |
f5385ebf AM |
6769 | || fdh->elf.def_dynamic |
6770 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6771 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6772 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6773 | { | |
6774 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6775 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6776 | return FALSE; |
f5385ebf AM |
6777 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6778 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6779 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6780 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6781 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6782 | { |
40d16e0b | 6783 | move_plt_plist (fh, fdh); |
f5385ebf | 6784 | fdh->elf.needs_plt = 1; |
e86ce104 | 6785 | } |
50bc7936 | 6786 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6787 | fdh->oh = fh; |
6788 | fh->oh = fdh; | |
e86ce104 AM |
6789 | } |
6790 | ||
50bc7936 AM |
6791 | /* Now that the info is on the function descriptor, clear the |
6792 | function code sym info. Any function code syms for which we | |
6793 | don't have a definition in a regular file, we force local. | |
6794 | This prevents a shared library from exporting syms that have | |
6795 | been imported from another library. Function code syms that | |
6796 | are really in the library we must leave global to prevent the | |
6797 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6798 | force_local = (!fh->elf.def_regular |
6799 | || fdh == NULL | |
6800 | || !fdh->elf.def_regular | |
6801 | || fdh->elf.forced_local); | |
50bc7936 AM |
6802 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6803 | ||
b34976b6 | 6804 | return TRUE; |
e86ce104 | 6805 | } |
40b8271b | 6806 | |
e86ce104 | 6807 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6808 | this hook to a) provide some gcc support functions, and b) transfer |
6809 | dynamic linking information gathered so far on function code symbol | |
6810 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6811 | |
b34976b6 | 6812 | static bfd_boolean |
4ce794b7 AM |
6813 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6814 | struct bfd_link_info *info) | |
e86ce104 AM |
6815 | { |
6816 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6817 | unsigned int i; |
27fc25a1 | 6818 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6819 | { |
6820 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6821 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6822 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6823 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6824 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6825 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6826 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6827 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6828 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6829 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6830 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6831 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6832 | }; | |
e86ce104 AM |
6833 | |
6834 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6835 | if (htab == NULL) |
6836 | return FALSE; | |
6837 | ||
5295321c AM |
6838 | if (!info->relocatable |
6839 | && htab->elf.hgot != NULL) | |
dba6fa9b AM |
6840 | { |
6841 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6842 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6843 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
6844 | htab->elf.hgot->type = STT_OBJECT; | |
6845 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6846 | htab->elf.hgot->root.u.def.value = 0; | |
6847 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6848 | htab->elf.hgot->def_regular = 1; | |
6849 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
6850 | | STV_HIDDEN); | |
6851 | } | |
c66bb0ee | 6852 | |
82bd7b59 AM |
6853 | if (htab->sfpr == NULL) |
6854 | /* We don't have any relocs. */ | |
b34976b6 | 6855 | return TRUE; |
82bd7b59 | 6856 | |
deb0e272 AM |
6857 | /* Provide any missing _save* and _rest* functions. */ |
6858 | htab->sfpr->size = 0; | |
27fc25a1 AM |
6859 | if (!info->relocatable) |
6860 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6861 | if (!sfpr_define (info, &funcs[i])) | |
6862 | return FALSE; | |
82bd7b59 | 6863 | |
4ce794b7 | 6864 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6865 | |
eea6121a | 6866 | if (htab->sfpr->size == 0) |
8423293d | 6867 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6868 | |
b34976b6 | 6869 | return TRUE; |
e86ce104 AM |
6870 | } |
6871 | ||
a345bc8d AM |
6872 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
6873 | ||
6874 | static bfd_boolean | |
6875 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6876 | { | |
6877 | struct ppc_link_hash_entry *eh; | |
6878 | struct elf_dyn_relocs *p; | |
6879 | ||
6880 | eh = (struct ppc_link_hash_entry *) h; | |
6881 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6882 | { | |
6883 | asection *s = p->sec->output_section; | |
6884 | ||
6885 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6886 | return TRUE; | |
6887 | } | |
6888 | return FALSE; | |
6889 | } | |
6890 | ||
e86ce104 AM |
6891 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6892 | regular object. The current definition is in some section of the | |
6893 | dynamic object, but we're not including those sections. We have to | |
6894 | change the definition to something the rest of the link can | |
6895 | understand. */ | |
6896 | ||
b34976b6 | 6897 | static bfd_boolean |
4ce794b7 AM |
6898 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6899 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6900 | { |
6901 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6902 | asection *s; |
e86ce104 AM |
6903 | |
6904 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6905 | if (htab == NULL) |
6906 | return FALSE; | |
e86ce104 AM |
6907 | |
6908 | /* Deal with function syms. */ | |
6909 | if (h->type == STT_FUNC | |
e054468f | 6910 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6911 | || h->needs_plt) |
e86ce104 AM |
6912 | { |
6913 | /* Clear procedure linkage table information for any symbol that | |
6914 | won't need a .plt entry. */ | |
411e1bfb AM |
6915 | struct plt_entry *ent; |
6916 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6917 | if (ent->plt.refcount > 0) | |
6918 | break; | |
8387904d | 6919 | if (ent == NULL |
e054468f AM |
6920 | || (h->type != STT_GNU_IFUNC |
6921 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6922 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6923 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6924 | { |
411e1bfb | 6925 | h->plt.plist = NULL; |
f5385ebf | 6926 | h->needs_plt = 0; |
40b8271b | 6927 | } |
a345bc8d AM |
6928 | else if (abiversion (info->output_bfd) == 2) |
6929 | { | |
6930 | /* After adjust_dynamic_symbol, non_got_ref set in the | |
6931 | non-shared case means that we have allocated space in | |
6932 | .dynbss for the symbol and thus dyn_relocs for this | |
6933 | symbol should be discarded. | |
6934 | If we get here we know we are making a PLT entry for this | |
6935 | symbol, and in an executable we'd normally resolve | |
6936 | relocations against this symbol to the PLT entry. Allow | |
6937 | dynamic relocs if the reference is weak, and the dynamic | |
6938 | relocs will not cause text relocation. */ | |
6939 | if (!h->ref_regular_nonweak | |
6940 | && h->non_got_ref | |
6941 | && h->type != STT_GNU_IFUNC | |
6942 | && !readonly_dynrelocs (h)) | |
6943 | h->non_got_ref = 0; | |
6944 | ||
6945 | /* If making a plt entry, then we don't need copy relocs. */ | |
6946 | return TRUE; | |
6947 | } | |
5bd4f169 | 6948 | } |
bbd7ec4a | 6949 | else |
411e1bfb | 6950 | h->plt.plist = NULL; |
5bd4f169 AM |
6951 | |
6952 | /* If this is a weak symbol, and there is a real definition, the | |
6953 | processor independent code will have arranged for us to see the | |
6954 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6955 | if (h->u.weakdef != NULL) |
5bd4f169 | 6956 | { |
f6e332e6 AM |
6957 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6958 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6959 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6960 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6961 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6962 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6963 | return TRUE; |
5bd4f169 AM |
6964 | } |
6965 | ||
5bd4f169 AM |
6966 | /* If we are creating a shared library, we must presume that the |
6967 | only references to the symbol are via the global offset table. | |
6968 | For such cases we need not do anything here; the relocations will | |
6969 | be handled correctly by relocate_section. */ | |
6970 | if (info->shared) | |
b34976b6 | 6971 | return TRUE; |
5bd4f169 | 6972 | |
65f38f15 AM |
6973 | /* If there are no references to this symbol that do not use the |
6974 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6975 | if (!h->non_got_ref) |
b34976b6 | 6976 | return TRUE; |
65f38f15 | 6977 | |
b186458a JJ |
6978 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6979 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6980 | return TRUE; | |
6981 | ||
a345bc8d AM |
6982 | /* If we didn't find any dynamic relocs in read-only sections, then |
6983 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6984 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 6985 | { |
a345bc8d AM |
6986 | h->non_got_ref = 0; |
6987 | return TRUE; | |
65f38f15 AM |
6988 | } |
6989 | ||
5d35169e | 6990 | if (h->plt.plist != NULL) |
97b639ba AM |
6991 | { |
6992 | /* We should never get here, but unfortunately there are versions | |
6993 | of gcc out there that improperly (for this ABI) put initialized | |
6994 | function pointers, vtable refs and suchlike in read-only | |
6995 | sections. Allow them to proceed, but warn that this might | |
6996 | break at runtime. */ | |
25f53a85 | 6997 | info->callbacks->einfo |
bc30df16 | 6998 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 6999 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7000 | h->root.root.string); |
7001 | } | |
5d35169e AM |
7002 | |
7003 | /* This is a reference to a symbol defined by a dynamic object which | |
7004 | is not a function. */ | |
7005 | ||
5bd4f169 AM |
7006 | /* We must allocate the symbol in our .dynbss section, which will |
7007 | become part of the .bss section of the executable. There will be | |
7008 | an entry for this symbol in the .dynsym section. The dynamic | |
7009 | object will contain position independent code, so all references | |
7010 | from the dynamic object to this symbol will go through the global | |
7011 | offset table. The dynamic linker will use the .dynsym entry to | |
7012 | determine the address it must put in the global offset table, so | |
7013 | both the dynamic object and the regular object will refer to the | |
7014 | same memory location for the variable. */ | |
5bd4f169 | 7015 | |
04c9666a AM |
7016 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7017 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7018 | runtime process image. We need to remember the offset into the |
7019 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7020 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7021 | { |
eea6121a | 7022 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7023 | h->needs_copy = 1; |
5bd4f169 AM |
7024 | } |
7025 | ||
4ce794b7 | 7026 | s = htab->dynbss; |
5bd4f169 | 7027 | |
027297b7 | 7028 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
7029 | } |
7030 | ||
e86ce104 AM |
7031 | /* If given a function descriptor symbol, hide both the function code |
7032 | sym and the descriptor. */ | |
7033 | static void | |
4ce794b7 AM |
7034 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7035 | struct elf_link_hash_entry *h, | |
7036 | bfd_boolean force_local) | |
e86ce104 | 7037 | { |
34814b9f | 7038 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7039 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7040 | ||
34814b9f AM |
7041 | eh = (struct ppc_link_hash_entry *) h; |
7042 | if (eh->is_func_descriptor) | |
e86ce104 | 7043 | { |
34814b9f | 7044 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7045 | |
721956f4 | 7046 | if (fh == NULL) |
d1329ca3 AM |
7047 | { |
7048 | const char *p, *q; | |
7049 | struct ppc_link_hash_table *htab; | |
7050 | char save; | |
7051 | ||
7052 | /* We aren't supposed to use alloca in BFD because on | |
7053 | systems which do not have alloca the version in libiberty | |
7054 | calls xmalloc, which might cause the program to crash | |
7055 | when it runs out of memory. This function doesn't have a | |
7056 | return status, so there's no way to gracefully return an | |
7057 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7058 | accessed; It's either a string in an ELF string table, |
7059 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7060 | |
34814b9f | 7061 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7062 | save = *p; |
7063 | *(char *) p = '.'; | |
7064 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7065 | if (htab == NULL) |
7066 | return; | |
7067 | ||
34814b9f AM |
7068 | fh = (struct ppc_link_hash_entry *) |
7069 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7070 | *(char *) p = save; |
7071 | ||
7072 | /* Unfortunately, if it so happens that the string we were | |
7073 | looking for was allocated immediately before this string, | |
7074 | then we overwrote the string terminator. That's the only | |
7075 | reason the lookup should fail. */ | |
7076 | if (fh == NULL) | |
7077 | { | |
34814b9f AM |
7078 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7079 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7080 | --q, --p; |
34814b9f AM |
7081 | if (q < eh->elf.root.root.string && *p == '.') |
7082 | fh = (struct ppc_link_hash_entry *) | |
7083 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7084 | } |
7085 | if (fh != NULL) | |
7086 | { | |
34814b9f AM |
7087 | eh->oh = fh; |
7088 | fh->oh = eh; | |
d1329ca3 AM |
7089 | } |
7090 | } | |
e86ce104 | 7091 | if (fh != NULL) |
34814b9f | 7092 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7093 | } |
7094 | } | |
7095 | ||
411e1bfb | 7096 | static bfd_boolean |
8843416a AM |
7097 | get_sym_h (struct elf_link_hash_entry **hp, |
7098 | Elf_Internal_Sym **symp, | |
7099 | asection **symsecp, | |
f961d9dd | 7100 | unsigned char **tls_maskp, |
8843416a AM |
7101 | Elf_Internal_Sym **locsymsp, |
7102 | unsigned long r_symndx, | |
7103 | bfd *ibfd) | |
411e1bfb | 7104 | { |
0ffa91dd | 7105 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7106 | |
7107 | if (r_symndx >= symtab_hdr->sh_info) | |
7108 | { | |
7109 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7110 | struct elf_link_hash_entry *h; | |
7111 | ||
7112 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7113 | h = elf_follow_link (h); |
411e1bfb AM |
7114 | |
7115 | if (hp != NULL) | |
7116 | *hp = h; | |
7117 | ||
7118 | if (symp != NULL) | |
7119 | *symp = NULL; | |
7120 | ||
7121 | if (symsecp != NULL) | |
7122 | { | |
7123 | asection *symsec = NULL; | |
7124 | if (h->root.type == bfd_link_hash_defined | |
7125 | || h->root.type == bfd_link_hash_defweak) | |
7126 | symsec = h->root.u.def.section; | |
7127 | *symsecp = symsec; | |
7128 | } | |
7129 | ||
e7b938ca | 7130 | if (tls_maskp != NULL) |
411e1bfb AM |
7131 | { |
7132 | struct ppc_link_hash_entry *eh; | |
7133 | ||
7134 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7135 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7136 | } |
7137 | } | |
7138 | else | |
7139 | { | |
7140 | Elf_Internal_Sym *sym; | |
7141 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7142 | ||
7143 | if (locsyms == NULL) | |
7144 | { | |
7145 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7146 | if (locsyms == NULL) | |
7147 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7148 | symtab_hdr->sh_info, | |
7149 | 0, NULL, NULL, NULL); | |
7150 | if (locsyms == NULL) | |
7151 | return FALSE; | |
7152 | *locsymsp = locsyms; | |
7153 | } | |
7154 | sym = locsyms + r_symndx; | |
7155 | ||
7156 | if (hp != NULL) | |
7157 | *hp = NULL; | |
7158 | ||
7159 | if (symp != NULL) | |
7160 | *symp = sym; | |
7161 | ||
7162 | if (symsecp != NULL) | |
cb33740c | 7163 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7164 | |
e7b938ca | 7165 | if (tls_maskp != NULL) |
411e1bfb AM |
7166 | { |
7167 | struct got_entry **lgot_ents; | |
f961d9dd | 7168 | unsigned char *tls_mask; |
411e1bfb | 7169 | |
e7b938ca | 7170 | tls_mask = NULL; |
411e1bfb AM |
7171 | lgot_ents = elf_local_got_ents (ibfd); |
7172 | if (lgot_ents != NULL) | |
7173 | { | |
e054468f AM |
7174 | struct plt_entry **local_plt = (struct plt_entry **) |
7175 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7176 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7177 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7178 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7179 | } |
e7b938ca | 7180 | *tls_maskp = tls_mask; |
411e1bfb AM |
7181 | } |
7182 | } | |
7183 | return TRUE; | |
7184 | } | |
7185 | ||
e7b938ca | 7186 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7187 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7188 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7189 | |
7190 | static int | |
f961d9dd | 7191 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7192 | unsigned long *toc_symndx, |
7193 | bfd_vma *toc_addend, | |
0d4792f7 | 7194 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7195 | const Elf_Internal_Rela *rel, |
7196 | bfd *ibfd) | |
411e1bfb AM |
7197 | { |
7198 | unsigned long r_symndx; | |
0d4792f7 | 7199 | int next_r; |
411e1bfb AM |
7200 | struct elf_link_hash_entry *h; |
7201 | Elf_Internal_Sym *sym; | |
7202 | asection *sec; | |
7203 | bfd_vma off; | |
7204 | ||
7205 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7206 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7207 | return 0; |
411e1bfb | 7208 | |
e7b938ca | 7209 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7210 | || sec == NULL |
6bee8834 | 7211 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7212 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7213 | return 1; |
411e1bfb AM |
7214 | |
7215 | /* Look inside a TOC section too. */ | |
7216 | if (h != NULL) | |
7217 | { | |
7218 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7219 | off = h->root.u.def.value; | |
7220 | } | |
7221 | else | |
7222 | off = sym->st_value; | |
7223 | off += rel->r_addend; | |
7224 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7225 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7226 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7227 | if (toc_symndx != NULL) |
7228 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7229 | if (toc_addend != NULL) |
7230 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7231 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7232 | return 0; | |
854b41e7 | 7233 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7234 | && (next_r == -1 || next_r == -2)) |
7235 | return 1 - next_r; | |
951fd09b | 7236 | return 1; |
411e1bfb AM |
7237 | } |
7238 | ||
3b421ab3 AM |
7239 | /* Find (or create) an entry in the tocsave hash table. */ |
7240 | ||
7241 | static struct tocsave_entry * | |
7242 | tocsave_find (struct ppc_link_hash_table *htab, | |
7243 | enum insert_option insert, | |
7244 | Elf_Internal_Sym **local_syms, | |
7245 | const Elf_Internal_Rela *irela, | |
7246 | bfd *ibfd) | |
7247 | { | |
7248 | unsigned long r_indx; | |
7249 | struct elf_link_hash_entry *h; | |
7250 | Elf_Internal_Sym *sym; | |
7251 | struct tocsave_entry ent, *p; | |
7252 | hashval_t hash; | |
7253 | struct tocsave_entry **slot; | |
7254 | ||
7255 | r_indx = ELF64_R_SYM (irela->r_info); | |
7256 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7257 | return NULL; | |
7258 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7259 | { | |
7260 | (*_bfd_error_handler) | |
7261 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7262 | return NULL; | |
7263 | } | |
7264 | ||
7265 | if (h != NULL) | |
7266 | ent.offset = h->root.u.def.value; | |
7267 | else | |
7268 | ent.offset = sym->st_value; | |
7269 | ent.offset += irela->r_addend; | |
7270 | ||
7271 | hash = tocsave_htab_hash (&ent); | |
7272 | slot = ((struct tocsave_entry **) | |
7273 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7274 | if (slot == NULL) | |
7275 | return NULL; | |
7276 | ||
7277 | if (*slot == NULL) | |
7278 | { | |
7279 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7280 | if (p == NULL) | |
7281 | return NULL; | |
7282 | *p = ent; | |
7283 | *slot = p; | |
7284 | } | |
7285 | return *slot; | |
7286 | } | |
7287 | ||
754021d0 | 7288 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7289 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7290 | |
7291 | static bfd_boolean | |
7292 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7293 | { | |
7294 | struct ppc_link_hash_entry *eh; | |
7295 | asection *sym_sec; | |
74f0fb50 | 7296 | struct _opd_sec_data *opd; |
754021d0 AM |
7297 | |
7298 | if (h->root.type == bfd_link_hash_indirect) | |
7299 | return TRUE; | |
7300 | ||
754021d0 AM |
7301 | if (h->root.type != bfd_link_hash_defined |
7302 | && h->root.type != bfd_link_hash_defweak) | |
7303 | return TRUE; | |
7304 | ||
7305 | eh = (struct ppc_link_hash_entry *) h; | |
7306 | if (eh->adjust_done) | |
7307 | return TRUE; | |
7308 | ||
7309 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7310 | opd = get_opd_info (sym_sec); |
7311 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7312 | { |
74f0fb50 | 7313 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
7314 | if (adjust == -1) |
7315 | { | |
7316 | /* This entry has been deleted. */ | |
b3fac117 | 7317 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7318 | if (dsec == NULL) |
7319 | { | |
7320 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7321 | if (discarded_section (dsec)) |
81688140 | 7322 | { |
b3fac117 | 7323 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7324 | break; |
7325 | } | |
7326 | } | |
4025353c | 7327 | eh->elf.root.u.def.value = 0; |
81688140 | 7328 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7329 | } |
7330 | else | |
7331 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7332 | eh->adjust_done = 1; |
7333 | } | |
7334 | return TRUE; | |
7335 | } | |
7336 | ||
8c1d1bb8 | 7337 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7338 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7339 | have already been determined. */ |
7340 | ||
7341 | static bfd_boolean | |
7342 | dec_dynrel_count (bfd_vma r_info, | |
7343 | asection *sec, | |
7344 | struct bfd_link_info *info, | |
7345 | Elf_Internal_Sym **local_syms, | |
7346 | struct elf_link_hash_entry *h, | |
19e08130 | 7347 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7348 | { |
7349 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7350 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7351 | |
7352 | /* Can this reloc be dynamic? This switch, and later tests here | |
7353 | should be kept in sync with the code in check_relocs. */ | |
7354 | r_type = ELF64_R_TYPE (r_info); | |
7355 | switch (r_type) | |
7356 | { | |
7357 | default: | |
7358 | return TRUE; | |
7359 | ||
7360 | case R_PPC64_TPREL16: | |
7361 | case R_PPC64_TPREL16_LO: | |
7362 | case R_PPC64_TPREL16_HI: | |
7363 | case R_PPC64_TPREL16_HA: | |
7364 | case R_PPC64_TPREL16_DS: | |
7365 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7366 | case R_PPC64_TPREL16_HIGH: |
7367 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7368 | case R_PPC64_TPREL16_HIGHER: |
7369 | case R_PPC64_TPREL16_HIGHERA: | |
7370 | case R_PPC64_TPREL16_HIGHEST: | |
7371 | case R_PPC64_TPREL16_HIGHESTA: | |
7372 | if (!info->shared) | |
7373 | return TRUE; | |
7374 | ||
7375 | case R_PPC64_TPREL64: | |
7376 | case R_PPC64_DTPMOD64: | |
7377 | case R_PPC64_DTPREL64: | |
7378 | case R_PPC64_ADDR64: | |
7379 | case R_PPC64_REL30: | |
7380 | case R_PPC64_REL32: | |
7381 | case R_PPC64_REL64: | |
7382 | case R_PPC64_ADDR14: | |
7383 | case R_PPC64_ADDR14_BRNTAKEN: | |
7384 | case R_PPC64_ADDR14_BRTAKEN: | |
7385 | case R_PPC64_ADDR16: | |
7386 | case R_PPC64_ADDR16_DS: | |
7387 | case R_PPC64_ADDR16_HA: | |
7388 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7389 | case R_PPC64_ADDR16_HIGH: |
7390 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7391 | case R_PPC64_ADDR16_HIGHER: |
7392 | case R_PPC64_ADDR16_HIGHERA: | |
7393 | case R_PPC64_ADDR16_HIGHEST: | |
7394 | case R_PPC64_ADDR16_HIGHESTA: | |
7395 | case R_PPC64_ADDR16_LO: | |
7396 | case R_PPC64_ADDR16_LO_DS: | |
7397 | case R_PPC64_ADDR24: | |
7398 | case R_PPC64_ADDR32: | |
7399 | case R_PPC64_UADDR16: | |
7400 | case R_PPC64_UADDR32: | |
7401 | case R_PPC64_UADDR64: | |
7402 | case R_PPC64_TOC: | |
7403 | break; | |
7404 | } | |
7405 | ||
7406 | if (local_syms != NULL) | |
7407 | { | |
7408 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7409 | bfd *ibfd = sec->owner; |
7410 | ||
7411 | r_symndx = ELF64_R_SYM (r_info); | |
7412 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7413 | return FALSE; | |
7414 | } | |
7415 | ||
7416 | if ((info->shared | |
1d483afe | 7417 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7418 | || (h != NULL |
198f1157 | 7419 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7420 | || h->root.type == bfd_link_hash_defweak |
7421 | || !h->def_regular)))) | |
7422 | || (ELIMINATE_COPY_RELOCS | |
7423 | && !info->shared | |
7424 | && h != NULL | |
7425 | && (h->root.type == bfd_link_hash_defweak | |
7426 | || !h->def_regular))) | |
7427 | ; | |
7428 | else | |
7429 | return TRUE; | |
7430 | ||
7431 | if (h != NULL) | |
6edfbbad | 7432 | { |
19e08130 AM |
7433 | struct elf_dyn_relocs *p; |
7434 | struct elf_dyn_relocs **pp; | |
7435 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7436 | ||
7437 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7438 | with local syms for a given section. Also, symbol flags are | |
7439 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7440 | report a dynreloc miscount. */ | |
7441 | if (*pp == NULL && info->gc_sections) | |
7442 | return TRUE; | |
7443 | ||
7444 | while ((p = *pp) != NULL) | |
60124e18 | 7445 | { |
19e08130 AM |
7446 | if (p->sec == sec) |
7447 | { | |
7448 | if (!must_be_dyn_reloc (info, r_type)) | |
7449 | p->pc_count -= 1; | |
7450 | p->count -= 1; | |
7451 | if (p->count == 0) | |
7452 | *pp = p->next; | |
7453 | return TRUE; | |
7454 | } | |
7455 | pp = &p->next; | |
60124e18 | 7456 | } |
6edfbbad | 7457 | } |
19e08130 AM |
7458 | else |
7459 | { | |
7460 | struct ppc_dyn_relocs *p; | |
7461 | struct ppc_dyn_relocs **pp; | |
7462 | void *vpp; | |
7463 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7464 | |
19e08130 AM |
7465 | if (local_syms == NULL) |
7466 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7467 | if (sym_sec == NULL) | |
7468 | sym_sec = sec; | |
c57da1a7 | 7469 | |
19e08130 AM |
7470 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7471 | pp = (struct ppc_dyn_relocs **) vpp; | |
7472 | ||
7473 | if (*pp == NULL && info->gc_sections) | |
7474 | return TRUE; | |
7475 | ||
7476 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7477 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7478 | { |
19e08130 AM |
7479 | if (p->sec == sec && p->ifunc == is_ifunc) |
7480 | { | |
7481 | p->count -= 1; | |
7482 | if (p->count == 0) | |
7483 | *pp = p->next; | |
7484 | return TRUE; | |
7485 | } | |
7486 | pp = &p->next; | |
8c1d1bb8 | 7487 | } |
8c1d1bb8 AM |
7488 | } |
7489 | ||
8de848d8 | 7490 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7491 | sec->owner, sec); |
8c1d1bb8 AM |
7492 | bfd_set_error (bfd_error_bad_value); |
7493 | return FALSE; | |
7494 | } | |
7495 | ||
754021d0 AM |
7496 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7497 | only remove those associated with functions in discarded link-once | |
7498 | sections, or weakly defined functions that have been overridden. It | |
7499 | would be possible to remove many more entries for statically linked | |
7500 | applications. */ | |
7501 | ||
b34976b6 | 7502 | bfd_boolean |
33c0ec9d | 7503 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
7504 | { |
7505 | bfd *ibfd; | |
754021d0 | 7506 | bfd_boolean some_edited = FALSE; |
3f764659 | 7507 | asection *need_pad = NULL; |
1e2f5b6e | 7508 | |
411e1bfb | 7509 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7510 | { |
7511 | asection *sec; | |
7512 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7513 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7514 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7515 | bfd_vma offset; |
74f0fb50 | 7516 | struct _opd_sec_data *opd; |
3f764659 JJ |
7517 | bfd_boolean need_edit, add_aux_fields; |
7518 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7519 | |
854b41e7 AM |
7520 | if (!is_ppc64_elf (ibfd)) |
7521 | continue; | |
7522 | ||
1e2f5b6e | 7523 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7524 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7525 | continue; |
7526 | ||
dbaa2011 | 7527 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7528 | continue; |
7529 | ||
1e2f5b6e AM |
7530 | if (sec->output_section == bfd_abs_section_ptr) |
7531 | continue; | |
7532 | ||
7533 | /* Look through the section relocs. */ | |
7534 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7535 | continue; | |
7536 | ||
6cdc0ccc | 7537 | local_syms = NULL; |
0ffa91dd | 7538 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7539 | |
7540 | /* Read the relocations. */ | |
4ce794b7 | 7541 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7542 | info->keep_memory); |
1e2f5b6e | 7543 | if (relstart == NULL) |
b34976b6 | 7544 | return FALSE; |
1e2f5b6e AM |
7545 | |
7546 | /* First run through the relocs to check they are sane, and to | |
7547 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7548 | need_edit = FALSE; |
3f764659 | 7549 | need_pad = sec; |
1e2f5b6e AM |
7550 | offset = 0; |
7551 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7552 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7553 | { |
04c9666a | 7554 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7555 | unsigned long r_symndx; |
7556 | asection *sym_sec; | |
7557 | struct elf_link_hash_entry *h; | |
7558 | Elf_Internal_Sym *sym; | |
7559 | ||
3f764659 | 7560 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7561 | only interested in the reloc pointing to a function entry |
7562 | point. */ | |
50bc7936 AM |
7563 | if (rel->r_offset != offset |
7564 | || rel + 1 >= relend | |
7565 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7566 | { |
7567 | /* If someone messes with .opd alignment then after a | |
7568 | "ld -r" we might have padding in the middle of .opd. | |
7569 | Also, there's nothing to prevent someone putting | |
7570 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7571 | optimization for them! */ |
3f764659 | 7572 | broken_opd: |
1e2f5b6e | 7573 | (*_bfd_error_handler) |
d003868e | 7574 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7575 | need_edit = FALSE; |
1e2f5b6e AM |
7576 | break; |
7577 | } | |
7578 | ||
50bc7936 AM |
7579 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7580 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7581 | { | |
7582 | (*_bfd_error_handler) | |
d003868e AM |
7583 | (_("%B: unexpected reloc type %u in .opd section"), |
7584 | ibfd, r_type); | |
50bc7936 AM |
7585 | need_edit = FALSE; |
7586 | break; | |
7587 | } | |
7588 | ||
1e2f5b6e | 7589 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7590 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7591 | r_symndx, ibfd)) | |
50bc7936 | 7592 | goto error_ret; |
1e2f5b6e AM |
7593 | |
7594 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7595 | { | |
411e1bfb AM |
7596 | const char *sym_name; |
7597 | if (h != NULL) | |
7598 | sym_name = h->root.root.string; | |
7599 | else | |
26c61ae5 L |
7600 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7601 | sym_sec); | |
411e1bfb | 7602 | |
1e2f5b6e | 7603 | (*_bfd_error_handler) |
d003868e AM |
7604 | (_("%B: undefined sym `%s' in .opd section"), |
7605 | ibfd, sym_name); | |
b34976b6 | 7606 | need_edit = FALSE; |
1e2f5b6e AM |
7607 | break; |
7608 | } | |
7609 | ||
51020317 AM |
7610 | /* opd entries are always for functions defined in the |
7611 | current input bfd. If the symbol isn't defined in the | |
7612 | input bfd, then we won't be using the function in this | |
7613 | bfd; It must be defined in a linkonce section in another | |
7614 | bfd, or is weak. It's also possible that we are | |
7615 | discarding the function due to a linker script /DISCARD/, | |
7616 | which we test for via the output_section. */ | |
7617 | if (sym_sec->owner != ibfd | |
7618 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7619 | need_edit = TRUE; |
1e2f5b6e | 7620 | |
50bc7936 | 7621 | rel += 2; |
3f764659 JJ |
7622 | if (rel == relend |
7623 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7624 | { | |
7625 | if (sec->size == offset + 24) | |
7626 | { | |
7627 | need_pad = NULL; | |
7628 | break; | |
7629 | } | |
7630 | if (rel == relend && sec->size == offset + 16) | |
7631 | { | |
7632 | cnt_16b++; | |
7633 | break; | |
7634 | } | |
7635 | goto broken_opd; | |
7636 | } | |
7637 | ||
7638 | if (rel->r_offset == offset + 24) | |
7639 | offset += 24; | |
7640 | else if (rel->r_offset != offset + 16) | |
7641 | goto broken_opd; | |
7642 | else if (rel + 1 < relend | |
7643 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7644 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7645 | { | |
7646 | offset += 16; | |
7647 | cnt_16b++; | |
7648 | } | |
7649 | else if (rel + 2 < relend | |
7650 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7651 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7652 | { | |
7653 | offset += 24; | |
7654 | rel += 1; | |
7655 | } | |
7656 | else | |
7657 | goto broken_opd; | |
1e2f5b6e AM |
7658 | } |
7659 | ||
3f764659 JJ |
7660 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7661 | ||
7662 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7663 | { |
7664 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7665 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7666 | bfd_byte *rptr, *wptr; |
983bddc8 | 7667 | bfd_byte *new_contents; |
b34976b6 | 7668 | bfd_boolean skip; |
3f764659 | 7669 | long opd_ent_size; |
74f0fb50 AM |
7670 | bfd_size_type amt; |
7671 | ||
983bddc8 | 7672 | new_contents = NULL; |
74f0fb50 AM |
7673 | amt = sec->size * sizeof (long) / 8; |
7674 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7675 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7676 | if (opd->adjust == NULL) |
7677 | return FALSE; | |
7678 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7679 | |
7680 | /* This seems a waste of time as input .opd sections are all | |
7681 | zeros as generated by gcc, but I suppose there's no reason | |
7682 | this will always be so. We might start putting something in | |
7683 | the third word of .opd entries. */ | |
7684 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7685 | { | |
eea6121a AM |
7686 | bfd_byte *loc; |
7687 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7688 | { |
eea6121a AM |
7689 | if (loc != NULL) |
7690 | free (loc); | |
50bc7936 | 7691 | error_ret: |
6cdc0ccc AM |
7692 | if (local_syms != NULL |
7693 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7694 | free (local_syms); | |
6cdc0ccc AM |
7695 | if (elf_section_data (sec)->relocs != relstart) |
7696 | free (relstart); | |
b34976b6 | 7697 | return FALSE; |
6cdc0ccc | 7698 | } |
1e2f5b6e AM |
7699 | sec->contents = loc; |
7700 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7701 | } | |
7702 | ||
7703 | elf_section_data (sec)->relocs = relstart; | |
7704 | ||
3f764659 | 7705 | new_contents = sec->contents; |
3f764659 JJ |
7706 | if (add_aux_fields) |
7707 | { | |
7708 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7709 | if (new_contents == NULL) | |
7710 | return FALSE; | |
7711 | need_pad = FALSE; | |
3f764659 | 7712 | } |
b4f4e59f AM |
7713 | wptr = new_contents; |
7714 | rptr = sec->contents; | |
3f764659 | 7715 | |
1e2f5b6e | 7716 | write_rel = relstart; |
b34976b6 | 7717 | skip = FALSE; |
1e2f5b6e | 7718 | offset = 0; |
3f764659 | 7719 | opd_ent_size = 0; |
1e2f5b6e AM |
7720 | for (rel = relstart; rel < relend; rel++) |
7721 | { | |
50bc7936 AM |
7722 | unsigned long r_symndx; |
7723 | asection *sym_sec; | |
7724 | struct elf_link_hash_entry *h; | |
7725 | Elf_Internal_Sym *sym; | |
7726 | ||
7727 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7728 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7729 | r_symndx, ibfd)) |
50bc7936 AM |
7730 | goto error_ret; |
7731 | ||
1e2f5b6e AM |
7732 | if (rel->r_offset == offset) |
7733 | { | |
50bc7936 | 7734 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7735 | |
7736 | /* See if the .opd entry is full 24 byte or | |
7737 | 16 byte (with fd_aux entry overlapped with next | |
7738 | fd_func). */ | |
7739 | opd_ent_size = 24; | |
7740 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7741 | || (rel + 3 < relend | |
7742 | && rel[2].r_offset == offset + 16 | |
7743 | && rel[3].r_offset == offset + 24 | |
7744 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7745 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7746 | opd_ent_size = 16; | |
7747 | ||
4025353c AM |
7748 | if (h != NULL |
7749 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7750 | { |
4dfe6ac6 NC |
7751 | struct ppc_link_hash_table *htab; |
7752 | ||
7753 | htab = ppc_hash_table (info); | |
7754 | if (htab != NULL) | |
7755 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7756 | htab); | |
c4f68ce3 AM |
7757 | if (fdh != NULL |
7758 | && fdh->elf.root.type != bfd_link_hash_defined | |
7759 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7760 | fdh = NULL; | |
7761 | } | |
1e2f5b6e | 7762 | |
51020317 AM |
7763 | skip = (sym_sec->owner != ibfd |
7764 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7765 | if (skip) |
7766 | { | |
4025353c | 7767 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7768 | { |
7769 | /* Arrange for the function descriptor sym | |
7770 | to be dropped. */ | |
d6fe2dc1 AM |
7771 | fdh->elf.root.u.def.value = 0; |
7772 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7773 | } |
74f0fb50 | 7774 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7775 | } |
7776 | else | |
1e2f5b6e AM |
7777 | { |
7778 | /* We'll be keeping this opd entry. */ | |
7779 | ||
4025353c | 7780 | if (fdh != NULL) |
1e2f5b6e | 7781 | { |
754021d0 AM |
7782 | /* Redefine the function descriptor symbol to |
7783 | this location in the opd section. It is | |
7784 | necessary to update the value here rather | |
7785 | than using an array of adjustments as we do | |
7786 | for local symbols, because various places | |
7787 | in the generic ELF code use the value | |
7788 | stored in u.def.value. */ | |
3f764659 | 7789 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7790 | fdh->adjust_done = 1; |
1e2f5b6e | 7791 | } |
754021d0 AM |
7792 | |
7793 | /* Local syms are a bit tricky. We could | |
7794 | tweak them as they can be cached, but | |
7795 | we'd need to look through the local syms | |
7796 | for the function descriptor sym which we | |
7797 | don't have at the moment. So keep an | |
7798 | array of adjustments. */ | |
74f0fb50 | 7799 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7800 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7801 | |
7802 | if (wptr != rptr) | |
3f764659 JJ |
7803 | memcpy (wptr, rptr, opd_ent_size); |
7804 | wptr += opd_ent_size; | |
7805 | if (add_aux_fields && opd_ent_size == 16) | |
7806 | { | |
7807 | memset (wptr, '\0', 8); | |
7808 | wptr += 8; | |
7809 | } | |
1e2f5b6e | 7810 | } |
3f764659 JJ |
7811 | rptr += opd_ent_size; |
7812 | offset += opd_ent_size; | |
1e2f5b6e AM |
7813 | } |
7814 | ||
50bc7936 AM |
7815 | if (skip) |
7816 | { | |
60124e18 AM |
7817 | if (!NO_OPD_RELOCS |
7818 | && !info->relocatable | |
18d944df | 7819 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7820 | NULL, h, sym)) |
8c1d1bb8 | 7821 | goto error_ret; |
50bc7936 AM |
7822 | } |
7823 | else | |
1e2f5b6e | 7824 | { |
50bc7936 AM |
7825 | /* We need to adjust any reloc offsets to point to the |
7826 | new opd entries. While we're at it, we may as well | |
7827 | remove redundant relocs. */ | |
74f0fb50 | 7828 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7829 | if (write_rel != rel) |
7830 | memcpy (write_rel, rel, sizeof (*rel)); | |
7831 | ++write_rel; | |
7832 | } | |
7833 | } | |
7834 | ||
3f764659 | 7835 | sec->size = wptr - new_contents; |
1e2f5b6e | 7836 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7837 | if (add_aux_fields) |
7838 | { | |
7839 | free (sec->contents); | |
7840 | sec->contents = new_contents; | |
7841 | } | |
7842 | ||
05bf9422 | 7843 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7844 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7845 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7846 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7847 | some_edited = TRUE; |
1e2f5b6e | 7848 | } |
6cdc0ccc | 7849 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7850 | free (relstart); |
6cdc0ccc | 7851 | |
411e1bfb AM |
7852 | if (local_syms != NULL |
7853 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7854 | { | |
7855 | if (!info->keep_memory) | |
7856 | free (local_syms); | |
7857 | else | |
7858 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7859 | } | |
7860 | } | |
7861 | ||
754021d0 AM |
7862 | if (some_edited) |
7863 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7864 | ||
3f764659 JJ |
7865 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7866 | long, add a 8 byte padding after it. */ | |
7867 | if (need_pad != NULL && !info->relocatable) | |
7868 | { | |
7869 | bfd_byte *p; | |
7870 | ||
7871 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7872 | { | |
7873 | BFD_ASSERT (need_pad->size > 0); | |
7874 | ||
7875 | p = bfd_malloc (need_pad->size + 8); | |
7876 | if (p == NULL) | |
7877 | return FALSE; | |
699733f6 | 7878 | |
3f764659 JJ |
7879 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7880 | p, 0, need_pad->size)) | |
7881 | return FALSE; | |
7882 | ||
7883 | need_pad->contents = p; | |
7884 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7885 | } | |
7886 | else | |
7887 | { | |
7888 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7889 | if (p == NULL) | |
7890 | return FALSE; | |
7891 | ||
7892 | need_pad->contents = p; | |
7893 | } | |
7894 | ||
7895 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7896 | need_pad->size += 8; | |
7897 | } | |
7898 | ||
411e1bfb AM |
7899 | return TRUE; |
7900 | } | |
7901 | ||
e1918d23 | 7902 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7903 | |
e1918d23 | 7904 | asection * |
33c0ec9d AM |
7905 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7906 | int no_tls_get_addr_opt, | |
7907 | int *no_multi_toc) | |
411e1bfb | 7908 | { |
411e1bfb AM |
7909 | struct ppc_link_hash_table *htab; |
7910 | ||
411e1bfb | 7911 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7912 | if (htab == NULL) |
7913 | return NULL; | |
7914 | ||
ee67d69a AM |
7915 | if (abiversion (info->output_bfd) == 1) |
7916 | htab->opd_abi = 1; | |
7917 | ||
33c0ec9d AM |
7918 | if (*no_multi_toc) |
7919 | htab->do_multi_toc = 0; | |
7920 | else if (!htab->do_multi_toc) | |
7921 | *no_multi_toc = 1; | |
7922 | ||
3a71aa26 AM |
7923 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7924 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7925 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7926 | /* Move dynamic linking info to the function descriptor sym. */ |
7927 | if (htab->tls_get_addr != NULL) | |
7928 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7929 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7930 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7931 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7932 | if (!no_tls_get_addr_opt) |
7933 | { | |
7934 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7935 | ||
7936 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7937 | FALSE, FALSE, TRUE); | |
7938 | if (opt != NULL) | |
7939 | func_desc_adjust (opt, info); | |
7940 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7941 | FALSE, FALSE, TRUE); | |
7942 | if (opt_fd != NULL | |
7943 | && (opt_fd->root.type == bfd_link_hash_defined | |
7944 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7945 | { | |
7946 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7947 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7948 | be calling __tls_get_addr via a plt call stub, then | |
7949 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7950 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7951 | if (htab->elf.dynamic_sections_created | |
7952 | && tga_fd != NULL | |
7953 | && (tga_fd->type == STT_FUNC | |
7954 | || tga_fd->needs_plt) | |
7955 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7956 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7957 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7958 | { | |
7959 | struct plt_entry *ent; | |
7960 | ||
7961 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7962 | if (ent->plt.refcount > 0) | |
7963 | break; | |
7964 | if (ent != NULL) | |
7965 | { | |
7966 | tga_fd->root.type = bfd_link_hash_indirect; | |
7967 | tga_fd->root.u.i.link = &opt_fd->root; | |
7968 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7969 | if (opt_fd->dynindx != -1) | |
7970 | { | |
7971 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7972 | opt_fd->dynindx = -1; | |
7973 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7974 | opt_fd->dynstr_index); | |
7975 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7976 | return NULL; |
a7f2871e AM |
7977 | } |
7978 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7979 | tga = &htab->tls_get_addr->elf; | |
7980 | if (opt != NULL && tga != NULL) | |
7981 | { | |
7982 | tga->root.type = bfd_link_hash_indirect; | |
7983 | tga->root.u.i.link = &opt->root; | |
7984 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7985 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7986 | tga->forced_local); | |
7987 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7988 | } | |
7989 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7990 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7991 | if (htab->tls_get_addr != NULL) | |
7992 | { | |
7993 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7994 | htab->tls_get_addr->is_func = 1; | |
7995 | } | |
7996 | } | |
7997 | } | |
7998 | } | |
7999 | else | |
8000 | no_tls_get_addr_opt = TRUE; | |
8001 | } | |
8002 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 8003 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8004 | } |
8387904d | 8005 | |
3a71aa26 AM |
8006 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8007 | HASH1 or HASH2. */ | |
8387904d | 8008 | |
3a71aa26 AM |
8009 | static bfd_boolean |
8010 | branch_reloc_hash_match (const bfd *ibfd, | |
8011 | const Elf_Internal_Rela *rel, | |
8012 | const struct ppc_link_hash_entry *hash1, | |
8013 | const struct ppc_link_hash_entry *hash2) | |
8014 | { | |
8015 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8016 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8017 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8018 | ||
e054468f | 8019 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8020 | { |
3a71aa26 AM |
8021 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8022 | struct elf_link_hash_entry *h; | |
8387904d | 8023 | |
3a71aa26 | 8024 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8025 | h = elf_follow_link (h); |
3a71aa26 AM |
8026 | if (h == &hash1->elf || h == &hash2->elf) |
8027 | return TRUE; | |
a48ebf4d | 8028 | } |
3a71aa26 | 8029 | return FALSE; |
951fd09b | 8030 | } |
411e1bfb | 8031 | |
951fd09b AM |
8032 | /* Run through all the TLS relocs looking for optimization |
8033 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8034 | a preliminary section layout so that we know the TLS segment | |
8035 | offsets. We can't optimize earlier because some optimizations need | |
8036 | to know the tp offset, and we need to optimize before allocating | |
8037 | dynamic relocations. */ | |
8038 | ||
8039 | bfd_boolean | |
33c0ec9d | 8040 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8041 | { |
8042 | bfd *ibfd; | |
8043 | asection *sec; | |
8044 | struct ppc_link_hash_table *htab; | |
663a1470 | 8045 | unsigned char *toc_ref; |
102890f0 | 8046 | int pass; |
951fd09b | 8047 | |
1d483afe | 8048 | if (info->relocatable || !info->executable) |
411e1bfb AM |
8049 | return TRUE; |
8050 | ||
951fd09b | 8051 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8052 | if (htab == NULL) |
8053 | return FALSE; | |
8054 | ||
663a1470 AM |
8055 | /* Make two passes over the relocs. On the first pass, mark toc |
8056 | entries involved with tls relocs, and check that tls relocs | |
8057 | involved in setting up a tls_get_addr call are indeed followed by | |
8058 | such a call. If they are not, we can't do any tls optimization. | |
8059 | On the second pass twiddle tls_mask flags to notify | |
8060 | relocate_section that optimization can be done, and adjust got | |
8061 | and plt refcounts. */ | |
8062 | toc_ref = NULL; | |
8063 | for (pass = 0; pass < 2; ++pass) | |
8064 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8065 | { | |
8066 | Elf_Internal_Sym *locsyms = NULL; | |
8067 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8068 | ||
102890f0 AM |
8069 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8070 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8071 | { | |
8072 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8073 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8074 | |
102890f0 AM |
8075 | /* Read the relocations. */ |
8076 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8077 | info->keep_memory); | |
8078 | if (relstart == NULL) | |
8079 | return FALSE; | |
411e1bfb | 8080 | |
102890f0 AM |
8081 | relend = relstart + sec->reloc_count; |
8082 | for (rel = relstart; rel < relend; rel++) | |
8083 | { | |
8084 | enum elf_ppc64_reloc_type r_type; | |
8085 | unsigned long r_symndx; | |
8086 | struct elf_link_hash_entry *h; | |
8087 | Elf_Internal_Sym *sym; | |
8088 | asection *sym_sec; | |
f961d9dd AM |
8089 | unsigned char *tls_mask; |
8090 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8091 | bfd_vma value; |
8092 | bfd_boolean ok_tprel, is_local; | |
8093 | long toc_ref_index = 0; | |
8094 | int expecting_tls_get_addr = 0; | |
663a1470 | 8095 | bfd_boolean ret = FALSE; |
411e1bfb | 8096 | |
102890f0 AM |
8097 | r_symndx = ELF64_R_SYM (rel->r_info); |
8098 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8099 | r_symndx, ibfd)) | |
8100 | { | |
8101 | err_free_rel: | |
8102 | if (elf_section_data (sec)->relocs != relstart) | |
8103 | free (relstart); | |
8104 | if (toc_ref != NULL) | |
8105 | free (toc_ref); | |
8106 | if (locsyms != NULL | |
0ffa91dd | 8107 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8108 | != (unsigned char *) locsyms)) |
8109 | free (locsyms); | |
663a1470 | 8110 | return ret; |
102890f0 | 8111 | } |
411e1bfb | 8112 | |
102890f0 AM |
8113 | if (h != NULL) |
8114 | { | |
766bc656 AM |
8115 | if (h->root.type == bfd_link_hash_defined |
8116 | || h->root.type == bfd_link_hash_defweak) | |
8117 | value = h->root.u.def.value; | |
8118 | else if (h->root.type == bfd_link_hash_undefweak) | |
8119 | value = 0; | |
8120 | else | |
663a1470 AM |
8121 | { |
8122 | found_tls_get_addr_arg = 0; | |
8123 | continue; | |
8124 | } | |
102890f0 AM |
8125 | } |
8126 | else | |
8127 | /* Symbols referenced by TLS relocs must be of type | |
8128 | STT_TLS. So no need for .opd local sym adjust. */ | |
8129 | value = sym->st_value; | |
8130 | ||
8131 | ok_tprel = FALSE; | |
8132 | is_local = FALSE; | |
8133 | if (h == NULL | |
8134 | || !h->def_dynamic) | |
8135 | { | |
8136 | is_local = TRUE; | |
766bc656 AM |
8137 | if (h != NULL |
8138 | && h->root.type == bfd_link_hash_undefweak) | |
8139 | ok_tprel = TRUE; | |
8140 | else | |
8141 | { | |
8142 | value += sym_sec->output_offset; | |
8143 | value += sym_sec->output_section->vma; | |
8144 | value -= htab->elf.tls_sec->vma; | |
8145 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8146 | < (bfd_vma) 1 << 32); | |
8147 | } | |
102890f0 | 8148 | } |
951fd09b | 8149 | |
102890f0 | 8150 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8151 | /* If this section has old-style __tls_get_addr calls |
8152 | without marker relocs, then check that each | |
8153 | __tls_get_addr call reloc is preceded by a reloc | |
8154 | that conceivably belongs to the __tls_get_addr arg | |
8155 | setup insn. If we don't find matching arg setup | |
8156 | relocs, don't do any tls optimization. */ | |
8157 | if (pass == 0 | |
8158 | && sec->has_tls_get_addr_call | |
8159 | && h != NULL | |
8160 | && (h == &htab->tls_get_addr->elf | |
8161 | || h == &htab->tls_get_addr_fd->elf) | |
8162 | && !found_tls_get_addr_arg | |
8163 | && is_branch_reloc (r_type)) | |
8164 | { | |
25f53a85 | 8165 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8166 | "TLS optimization disabled\n"), |
8167 | ibfd, sec, rel->r_offset); | |
8168 | ret = TRUE; | |
8169 | goto err_free_rel; | |
8170 | } | |
8171 | ||
8172 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8173 | switch (r_type) |
8174 | { | |
8175 | case R_PPC64_GOT_TLSLD16: | |
8176 | case R_PPC64_GOT_TLSLD16_LO: | |
8177 | expecting_tls_get_addr = 1; | |
663a1470 | 8178 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8179 | /* Fall thru */ |
8180 | ||
8181 | case R_PPC64_GOT_TLSLD16_HI: | |
8182 | case R_PPC64_GOT_TLSLD16_HA: | |
8183 | /* These relocs should never be against a symbol | |
8184 | defined in a shared lib. Leave them alone if | |
8185 | that turns out to be the case. */ | |
8186 | if (!is_local) | |
8187 | continue; | |
411e1bfb | 8188 | |
102890f0 | 8189 | /* LD -> LE */ |
411e1bfb | 8190 | tls_set = 0; |
102890f0 AM |
8191 | tls_clear = TLS_LD; |
8192 | tls_type = TLS_TLS | TLS_LD; | |
8193 | break; | |
411e1bfb | 8194 | |
102890f0 AM |
8195 | case R_PPC64_GOT_TLSGD16: |
8196 | case R_PPC64_GOT_TLSGD16_LO: | |
8197 | expecting_tls_get_addr = 1; | |
663a1470 | 8198 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8199 | /* Fall thru */ |
8200 | ||
8201 | case R_PPC64_GOT_TLSGD16_HI: | |
8202 | case R_PPC64_GOT_TLSGD16_HA: | |
8203 | if (ok_tprel) | |
8204 | /* GD -> LE */ | |
411e1bfb | 8205 | tls_set = 0; |
102890f0 AM |
8206 | else |
8207 | /* GD -> IE */ | |
8208 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8209 | tls_clear = TLS_GD; | |
8210 | tls_type = TLS_TLS | TLS_GD; | |
8211 | break; | |
8212 | ||
8213 | case R_PPC64_GOT_TPREL16_DS: | |
8214 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8215 | case R_PPC64_GOT_TPREL16_HI: | |
8216 | case R_PPC64_GOT_TPREL16_HA: | |
8217 | if (ok_tprel) | |
8218 | { | |
8219 | /* IE -> LE */ | |
8220 | tls_set = 0; | |
8221 | tls_clear = TLS_TPREL; | |
8222 | tls_type = TLS_TLS | TLS_TPREL; | |
8223 | break; | |
8224 | } | |
411e1bfb AM |
8225 | continue; |
8226 | ||
727fc41e AM |
8227 | case R_PPC64_TLSGD: |
8228 | case R_PPC64_TLSLD: | |
663a1470 AM |
8229 | found_tls_get_addr_arg = 1; |
8230 | /* Fall thru */ | |
8231 | ||
8232 | case R_PPC64_TLS: | |
8233 | case R_PPC64_TOC16: | |
8234 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8235 | if (sym_sec == NULL || sym_sec != toc) |
8236 | continue; | |
8237 | ||
8238 | /* Mark this toc entry as referenced by a TLS | |
8239 | code sequence. We can do that now in the | |
8240 | case of R_PPC64_TLS, and after checking for | |
8241 | tls_get_addr for the TOC16 relocs. */ | |
8242 | if (toc_ref == NULL) | |
663a1470 AM |
8243 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8244 | if (toc_ref == NULL) | |
8245 | goto err_free_rel; | |
8246 | ||
102890f0 AM |
8247 | if (h != NULL) |
8248 | value = h->root.u.def.value; | |
8249 | else | |
8250 | value = sym->st_value; | |
8251 | value += rel->r_addend; | |
8252 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 8253 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8254 | if (r_type == R_PPC64_TLS |
8255 | || r_type == R_PPC64_TLSGD | |
8256 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8257 | { |
8258 | toc_ref[toc_ref_index] = 1; | |
8259 | continue; | |
8260 | } | |
8261 | ||
8262 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8263 | continue; | |
8264 | ||
8265 | tls_set = 0; | |
8266 | tls_clear = 0; | |
8267 | expecting_tls_get_addr = 2; | |
8268 | break; | |
8269 | ||
8270 | case R_PPC64_TPREL64: | |
8271 | if (pass == 0 | |
8272 | || sec != toc | |
8273 | || toc_ref == NULL | |
663a1470 | 8274 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8275 | continue; |
8276 | if (ok_tprel) | |
8277 | { | |
8278 | /* IE -> LE */ | |
8279 | tls_set = TLS_EXPLICIT; | |
8280 | tls_clear = TLS_TPREL; | |
8281 | break; | |
8282 | } | |
8283 | continue; | |
8284 | ||
8285 | case R_PPC64_DTPMOD64: | |
8286 | if (pass == 0 | |
8287 | || sec != toc | |
8288 | || toc_ref == NULL | |
663a1470 | 8289 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8290 | continue; |
8291 | if (rel + 1 < relend | |
8292 | && (rel[1].r_info | |
8293 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8294 | && rel[1].r_offset == rel->r_offset + 8) | |
8295 | { | |
8296 | if (ok_tprel) | |
8297 | /* GD -> LE */ | |
8298 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8299 | else | |
8300 | /* GD -> IE */ | |
8301 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8302 | tls_clear = TLS_GD; | |
8303 | } | |
8304 | else | |
8305 | { | |
8306 | if (!is_local) | |
8307 | continue; | |
8308 | ||
8309 | /* LD -> LE */ | |
8310 | tls_set = TLS_EXPLICIT; | |
8311 | tls_clear = TLS_LD; | |
8312 | } | |
8313 | break; | |
8314 | ||
8315 | default: | |
8316 | continue; | |
8317 | } | |
8318 | ||
8319 | if (pass == 0) | |
8320 | { | |
727fc41e AM |
8321 | if (!expecting_tls_get_addr |
8322 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8323 | continue; |
8324 | ||
3a71aa26 AM |
8325 | if (rel + 1 < relend |
8326 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8327 | htab->tls_get_addr, | |
8328 | htab->tls_get_addr_fd)) | |
102890f0 | 8329 | { |
3a71aa26 | 8330 | if (expecting_tls_get_addr == 2) |
102890f0 | 8331 | { |
3a71aa26 | 8332 | /* Check for toc tls entries. */ |
f961d9dd | 8333 | unsigned char *toc_tls; |
3a71aa26 AM |
8334 | int retval; |
8335 | ||
8336 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8337 | &locsyms, | |
8338 | rel, ibfd); | |
8339 | if (retval == 0) | |
8340 | goto err_free_rel; | |
663a1470 AM |
8341 | if (toc_tls != NULL) |
8342 | { | |
8343 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8344 | found_tls_get_addr_arg = 1; | |
8345 | if (retval > 1) | |
8346 | toc_ref[toc_ref_index] = 1; | |
8347 | } | |
102890f0 | 8348 | } |
3a71aa26 | 8349 | continue; |
102890f0 AM |
8350 | } |
8351 | ||
8352 | if (expecting_tls_get_addr != 1) | |
8353 | continue; | |
8354 | ||
8355 | /* Uh oh, we didn't find the expected call. We | |
8356 | could just mark this symbol to exclude it | |
8357 | from tls optimization but it's safer to skip | |
663a1470 | 8358 | the entire optimization. */ |
25f53a85 | 8359 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8360 | "TLS optimization disabled\n"), |
8361 | ibfd, sec, rel->r_offset); | |
8362 | ret = TRUE; | |
8363 | goto err_free_rel; | |
102890f0 AM |
8364 | } |
8365 | ||
85f7a9cb | 8366 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8367 | { |
8368 | struct plt_entry *ent; | |
8369 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8370 | ent != NULL; | |
8371 | ent = ent->next) | |
8372 | if (ent->addend == 0) | |
411e1bfb | 8373 | { |
102890f0 | 8374 | if (ent->plt.refcount > 0) |
30038c59 | 8375 | { |
102890f0 AM |
8376 | ent->plt.refcount -= 1; |
8377 | expecting_tls_get_addr = 0; | |
30038c59 | 8378 | } |
102890f0 | 8379 | break; |
411e1bfb | 8380 | } |
102890f0 | 8381 | } |
411e1bfb | 8382 | |
85f7a9cb | 8383 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8384 | { |
8385 | struct plt_entry *ent; | |
8386 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8387 | ent != NULL; | |
8388 | ent = ent->next) | |
8389 | if (ent->addend == 0) | |
411e1bfb | 8390 | { |
102890f0 AM |
8391 | if (ent->plt.refcount > 0) |
8392 | ent->plt.refcount -= 1; | |
8393 | break; | |
411e1bfb | 8394 | } |
102890f0 | 8395 | } |
411e1bfb | 8396 | |
102890f0 | 8397 | if (tls_clear == 0) |
30038c59 AM |
8398 | continue; |
8399 | ||
102890f0 AM |
8400 | if ((tls_set & TLS_EXPLICIT) == 0) |
8401 | { | |
8402 | struct got_entry *ent; | |
411e1bfb | 8403 | |
102890f0 AM |
8404 | /* Adjust got entry for this reloc. */ |
8405 | if (h != NULL) | |
8406 | ent = h->got.glist; | |
8407 | else | |
8408 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8409 | |
102890f0 AM |
8410 | for (; ent != NULL; ent = ent->next) |
8411 | if (ent->addend == rel->r_addend | |
8412 | && ent->owner == ibfd | |
8413 | && ent->tls_type == tls_type) | |
8414 | break; | |
8415 | if (ent == NULL) | |
8416 | abort (); | |
411e1bfb | 8417 | |
102890f0 AM |
8418 | if (tls_set == 0) |
8419 | { | |
8420 | /* We managed to get rid of a got entry. */ | |
8421 | if (ent->got.refcount > 0) | |
8422 | ent->got.refcount -= 1; | |
8423 | } | |
8424 | } | |
8425 | else | |
8426 | { | |
8427 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8428 | we'll lose one or two dyn relocs. */ | |
8429 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8430 | NULL, h, sym)) |
102890f0 | 8431 | return FALSE; |
411e1bfb | 8432 | |
102890f0 AM |
8433 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8434 | { | |
8435 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8436 | NULL, h, sym)) |
102890f0 AM |
8437 | return FALSE; |
8438 | } | |
8439 | } | |
411e1bfb | 8440 | |
102890f0 AM |
8441 | *tls_mask |= tls_set; |
8442 | *tls_mask &= ~tls_clear; | |
8443 | } | |
8c1d1bb8 | 8444 | |
102890f0 AM |
8445 | if (elf_section_data (sec)->relocs != relstart) |
8446 | free (relstart); | |
8447 | } | |
411e1bfb | 8448 | |
663a1470 AM |
8449 | if (locsyms != NULL |
8450 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8451 | { | |
8452 | if (!info->keep_memory) | |
8453 | free (locsyms); | |
8454 | else | |
8455 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8456 | } | |
8457 | } | |
411e1bfb | 8458 | |
663a1470 AM |
8459 | if (toc_ref != NULL) |
8460 | free (toc_ref); | |
b34976b6 | 8461 | return TRUE; |
1e2f5b6e | 8462 | } |
b34976b6 | 8463 | |
c5614fa4 AM |
8464 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8465 | the values of any global symbols in a toc section that has been | |
8466 | edited. Globals in toc sections should be a rarity, so this function | |
8467 | sets a flag if any are found in toc sections other than the one just | |
8468 | edited, so that futher hash table traversals can be avoided. */ | |
8469 | ||
8470 | struct adjust_toc_info | |
8471 | { | |
8472 | asection *toc; | |
8473 | unsigned long *skip; | |
8474 | bfd_boolean global_toc_syms; | |
8475 | }; | |
8476 | ||
ba761f19 AM |
8477 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8478 | ||
c5614fa4 AM |
8479 | static bfd_boolean |
8480 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8481 | { | |
8482 | struct ppc_link_hash_entry *eh; | |
8483 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8484 | unsigned long i; |
c5614fa4 | 8485 | |
c5614fa4 AM |
8486 | if (h->root.type != bfd_link_hash_defined |
8487 | && h->root.type != bfd_link_hash_defweak) | |
8488 | return TRUE; | |
8489 | ||
8490 | eh = (struct ppc_link_hash_entry *) h; | |
8491 | if (eh->adjust_done) | |
8492 | return TRUE; | |
8493 | ||
8494 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8495 | { | |
854b41e7 AM |
8496 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8497 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8498 | else |
854b41e7 AM |
8499 | i = eh->elf.root.u.def.value >> 3; |
8500 | ||
ba761f19 | 8501 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8502 | { |
8503 | (*_bfd_error_handler) | |
854b41e7 AM |
8504 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8505 | do | |
8506 | ++i; | |
ba761f19 | 8507 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8508 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8509 | } |
854b41e7 AM |
8510 | |
8511 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8512 | eh->adjust_done = 1; |
8513 | } | |
8514 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8515 | toc_inf->global_toc_syms = TRUE; | |
8516 | ||
8517 | return TRUE; | |
8518 | } | |
8519 | ||
560c8763 AM |
8520 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8521 | ||
8522 | static bfd_boolean | |
8523 | ok_lo_toc_insn (unsigned int insn) | |
8524 | { | |
8525 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8526 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8527 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8528 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8529 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8530 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8531 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8532 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8533 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8534 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8535 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8536 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8537 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8538 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8539 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8540 | && (insn & 3) != 1) | |
8541 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8542 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8543 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8544 | } | |
8545 | ||
c5614fa4 AM |
8546 | /* Examine all relocs referencing .toc sections in order to remove |
8547 | unused .toc entries. */ | |
8548 | ||
8549 | bfd_boolean | |
33c0ec9d | 8550 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8551 | { |
8552 | bfd *ibfd; | |
8553 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8554 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8555 | |
67f0cbdb | 8556 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8557 | toc_inf.global_toc_syms = TRUE; |
8558 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8559 | { | |
8560 | asection *toc, *sec; | |
8561 | Elf_Internal_Shdr *symtab_hdr; | |
8562 | Elf_Internal_Sym *local_syms; | |
425b145b | 8563 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8564 | unsigned long *skip, *drop; |
8565 | unsigned char *used; | |
8566 | unsigned char *keep, last, some_unused; | |
8567 | ||
854b41e7 AM |
8568 | if (!is_ppc64_elf (ibfd)) |
8569 | continue; | |
8570 | ||
c5614fa4 AM |
8571 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8572 | if (toc == NULL | |
92b7a70f | 8573 | || toc->size == 0 |
dbaa2011 AM |
8574 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8575 | || discarded_section (toc)) | |
c5614fa4 AM |
8576 | continue; |
8577 | ||
425b145b | 8578 | toc_relocs = NULL; |
c5614fa4 | 8579 | local_syms = NULL; |
0ffa91dd | 8580 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8581 | |
8582 | /* Look at sections dropped from the final link. */ | |
8583 | skip = NULL; | |
8584 | relstart = NULL; | |
8585 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8586 | { | |
8587 | if (sec->reloc_count == 0 | |
dbaa2011 | 8588 | || !discarded_section (sec) |
c5614fa4 AM |
8589 | || get_opd_info (sec) |
8590 | || (sec->flags & SEC_ALLOC) == 0 | |
8591 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8592 | continue; | |
8593 | ||
8594 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8595 | if (relstart == NULL) | |
8596 | goto error_ret; | |
8597 | ||
8598 | /* Run through the relocs to see which toc entries might be | |
8599 | unused. */ | |
8600 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8601 | { | |
8602 | enum elf_ppc64_reloc_type r_type; | |
8603 | unsigned long r_symndx; | |
8604 | asection *sym_sec; | |
8605 | struct elf_link_hash_entry *h; | |
8606 | Elf_Internal_Sym *sym; | |
8607 | bfd_vma val; | |
8608 | ||
8609 | r_type = ELF64_R_TYPE (rel->r_info); | |
8610 | switch (r_type) | |
8611 | { | |
8612 | default: | |
8613 | continue; | |
8614 | ||
8615 | case R_PPC64_TOC16: | |
8616 | case R_PPC64_TOC16_LO: | |
8617 | case R_PPC64_TOC16_HI: | |
8618 | case R_PPC64_TOC16_HA: | |
8619 | case R_PPC64_TOC16_DS: | |
8620 | case R_PPC64_TOC16_LO_DS: | |
8621 | break; | |
8622 | } | |
8623 | ||
8624 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8625 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8626 | r_symndx, ibfd)) | |
8627 | goto error_ret; | |
8628 | ||
8629 | if (sym_sec != toc) | |
8630 | continue; | |
8631 | ||
8632 | if (h != NULL) | |
8633 | val = h->root.u.def.value; | |
8634 | else | |
8635 | val = sym->st_value; | |
8636 | val += rel->r_addend; | |
8637 | ||
8638 | if (val >= toc->size) | |
8639 | continue; | |
8640 | ||
8641 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8642 | If not, don't mark as unused. */ | |
8643 | if (val & 7) | |
8644 | continue; | |
8645 | ||
8646 | if (skip == NULL) | |
8647 | { | |
854b41e7 | 8648 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8649 | if (skip == NULL) |
8650 | goto error_ret; | |
8651 | } | |
8652 | ||
ba761f19 | 8653 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8654 | } |
8655 | ||
8656 | if (elf_section_data (sec)->relocs != relstart) | |
8657 | free (relstart); | |
8658 | } | |
8659 | ||
ba761f19 AM |
8660 | /* For largetoc loads of address constants, we can convert |
8661 | . addis rx,2,addr@got@ha | |
8662 | . ld ry,addr@got@l(rx) | |
8663 | to | |
8664 | . addis rx,2,addr@toc@ha | |
8665 | . addi ry,rx,addr@toc@l | |
8666 | when addr is within 2G of the toc pointer. This then means | |
8667 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8668 | |
ba761f19 AM |
8669 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8670 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8671 | && toc->reloc_count != 0) | |
8672 | { | |
8673 | /* Read toc relocs. */ | |
425b145b AM |
8674 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8675 | info->keep_memory); | |
8676 | if (toc_relocs == NULL) | |
ba761f19 AM |
8677 | goto error_ret; |
8678 | ||
425b145b | 8679 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8680 | { |
8681 | enum elf_ppc64_reloc_type r_type; | |
8682 | unsigned long r_symndx; | |
8683 | asection *sym_sec; | |
8684 | struct elf_link_hash_entry *h; | |
8685 | Elf_Internal_Sym *sym; | |
8686 | bfd_vma val, addr; | |
8687 | ||
8688 | r_type = ELF64_R_TYPE (rel->r_info); | |
8689 | if (r_type != R_PPC64_ADDR64) | |
8690 | continue; | |
8691 | ||
8692 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8693 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8694 | r_symndx, ibfd)) | |
8695 | goto error_ret; | |
8696 | ||
425b145b | 8697 | if (sym_sec == NULL |
dbaa2011 | 8698 | || discarded_section (sym_sec)) |
425b145b AM |
8699 | continue; |
8700 | ||
afe397ea | 8701 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8702 | continue; |
8703 | ||
8704 | if (h != NULL) | |
bddc25c9 AM |
8705 | { |
8706 | if (h->type == STT_GNU_IFUNC) | |
8707 | continue; | |
8708 | val = h->root.u.def.value; | |
8709 | } | |
ba761f19 | 8710 | else |
bddc25c9 AM |
8711 | { |
8712 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8713 | continue; | |
8714 | val = sym->st_value; | |
8715 | } | |
ba761f19 AM |
8716 | val += rel->r_addend; |
8717 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8718 | ||
8719 | /* We don't yet know the exact toc pointer value, but we | |
8720 | know it will be somewhere in the toc section. Don't | |
8721 | optimize if the difference from any possible toc | |
8722 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8723 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8724 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8725 | continue; | |
8726 | ||
8727 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8728 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8729 | continue; | |
8730 | ||
8731 | if (skip == NULL) | |
8732 | { | |
8733 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8734 | if (skip == NULL) | |
8735 | goto error_ret; | |
8736 | } | |
8737 | ||
8738 | skip[rel->r_offset >> 3] | |
425b145b | 8739 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8740 | } |
ba761f19 AM |
8741 | } |
8742 | ||
c5614fa4 AM |
8743 | if (skip == NULL) |
8744 | continue; | |
8745 | ||
8746 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8747 | if (used == NULL) | |
8748 | { | |
8749 | error_ret: | |
8750 | if (local_syms != NULL | |
8751 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8752 | free (local_syms); | |
8753 | if (sec != NULL | |
8754 | && relstart != NULL | |
8755 | && elf_section_data (sec)->relocs != relstart) | |
8756 | free (relstart); | |
425b145b AM |
8757 | if (toc_relocs != NULL |
8758 | && elf_section_data (toc)->relocs != toc_relocs) | |
8759 | free (toc_relocs); | |
c5614fa4 AM |
8760 | if (skip != NULL) |
8761 | free (skip); | |
8762 | return FALSE; | |
8763 | } | |
8764 | ||
30038c59 AM |
8765 | /* Now check all kept sections that might reference the toc. |
8766 | Check the toc itself last. */ | |
8767 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8768 | : ibfd->sections); | |
c5614fa4 | 8769 | sec != NULL; |
c5614fa4 | 8770 | sec = (sec == toc ? NULL |
c5614fa4 | 8771 | : sec->next == NULL ? toc |
30038c59 | 8772 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8773 | : sec->next)) |
8774 | { | |
8775 | int repeat; | |
8776 | ||
8777 | if (sec->reloc_count == 0 | |
dbaa2011 | 8778 | || discarded_section (sec) |
c5614fa4 AM |
8779 | || get_opd_info (sec) |
8780 | || (sec->flags & SEC_ALLOC) == 0 | |
8781 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8782 | continue; | |
8783 | ||
854b41e7 AM |
8784 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8785 | info->keep_memory); | |
c5614fa4 AM |
8786 | if (relstart == NULL) |
8787 | goto error_ret; | |
8788 | ||
8789 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8790 | do |
d4f1ee75 AM |
8791 | { |
8792 | repeat = 0; | |
8793 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8794 | { | |
8795 | enum elf_ppc64_reloc_type r_type; | |
8796 | unsigned long r_symndx; | |
8797 | asection *sym_sec; | |
8798 | struct elf_link_hash_entry *h; | |
8799 | Elf_Internal_Sym *sym; | |
8800 | bfd_vma val; | |
8801 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8802 | |
d4f1ee75 AM |
8803 | r_type = ELF64_R_TYPE (rel->r_info); |
8804 | switch (r_type) | |
8805 | { | |
8806 | default: | |
8807 | insn_check = no_check; | |
8808 | break; | |
98528052 | 8809 | |
d4f1ee75 AM |
8810 | case R_PPC64_GOT_TLSLD16_HA: |
8811 | case R_PPC64_GOT_TLSGD16_HA: | |
8812 | case R_PPC64_GOT_TPREL16_HA: | |
8813 | case R_PPC64_GOT_DTPREL16_HA: | |
8814 | case R_PPC64_GOT16_HA: | |
8815 | case R_PPC64_TOC16_HA: | |
8816 | insn_check = check_ha; | |
8817 | break; | |
98528052 | 8818 | |
d4f1ee75 AM |
8819 | case R_PPC64_GOT_TLSLD16_LO: |
8820 | case R_PPC64_GOT_TLSGD16_LO: | |
8821 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8822 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8823 | case R_PPC64_GOT16_LO: | |
8824 | case R_PPC64_GOT16_LO_DS: | |
8825 | case R_PPC64_TOC16_LO: | |
8826 | case R_PPC64_TOC16_LO_DS: | |
8827 | insn_check = check_lo; | |
8828 | break; | |
8829 | } | |
560c8763 | 8830 | |
d4f1ee75 AM |
8831 | if (insn_check != no_check) |
8832 | { | |
8833 | bfd_vma off = rel->r_offset & ~3; | |
8834 | unsigned char buf[4]; | |
8835 | unsigned int insn; | |
c5614fa4 | 8836 | |
d4f1ee75 AM |
8837 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8838 | { | |
8839 | free (used); | |
8840 | goto error_ret; | |
8841 | } | |
8842 | insn = bfd_get_32 (ibfd, buf); | |
8843 | if (insn_check == check_lo | |
8844 | ? !ok_lo_toc_insn (insn) | |
8845 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8846 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8847 | { | |
8848 | char str[12]; | |
8849 | ||
8850 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8851 | sprintf (str, "%#08x", insn); | |
8852 | info->callbacks->einfo | |
8853 | (_("%P: %H: toc optimization is not supported for" | |
8854 | " %s instruction.\n"), | |
8855 | ibfd, sec, rel->r_offset & ~3, str); | |
8856 | } | |
8857 | } | |
c5614fa4 | 8858 | |
d4f1ee75 AM |
8859 | switch (r_type) |
8860 | { | |
8861 | case R_PPC64_TOC16: | |
8862 | case R_PPC64_TOC16_LO: | |
8863 | case R_PPC64_TOC16_HI: | |
8864 | case R_PPC64_TOC16_HA: | |
8865 | case R_PPC64_TOC16_DS: | |
8866 | case R_PPC64_TOC16_LO_DS: | |
8867 | /* In case we're taking addresses of toc entries. */ | |
8868 | case R_PPC64_ADDR64: | |
8869 | break; | |
c5614fa4 | 8870 | |
d4f1ee75 AM |
8871 | default: |
8872 | continue; | |
8873 | } | |
c5614fa4 | 8874 | |
d4f1ee75 AM |
8875 | r_symndx = ELF64_R_SYM (rel->r_info); |
8876 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8877 | r_symndx, ibfd)) | |
8878 | { | |
8879 | free (used); | |
8880 | goto error_ret; | |
8881 | } | |
c5614fa4 | 8882 | |
d4f1ee75 AM |
8883 | if (sym_sec != toc) |
8884 | continue; | |
c5614fa4 | 8885 | |
d4f1ee75 AM |
8886 | if (h != NULL) |
8887 | val = h->root.u.def.value; | |
8888 | else | |
8889 | val = sym->st_value; | |
8890 | val += rel->r_addend; | |
ba761f19 | 8891 | |
d4f1ee75 AM |
8892 | if (val >= toc->size) |
8893 | continue; | |
ba761f19 | 8894 | |
d4f1ee75 AM |
8895 | if ((skip[val >> 3] & can_optimize) != 0) |
8896 | { | |
8897 | bfd_vma off; | |
8898 | unsigned char opc; | |
8899 | ||
8900 | switch (r_type) | |
8901 | { | |
8902 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8903 | break; |
ba761f19 | 8904 | |
d4f1ee75 AM |
8905 | case R_PPC64_TOC16_LO_DS: |
8906 | off = rel->r_offset; | |
8907 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8908 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8909 | off, 1)) | |
8910 | { | |
8911 | free (used); | |
8912 | goto error_ret; | |
8913 | } | |
8914 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8915 | break; | |
8916 | /* Fall thru */ | |
ba761f19 | 8917 | |
d4f1ee75 AM |
8918 | default: |
8919 | /* Wrong sort of reloc, or not a ld. We may | |
8920 | as well clear ref_from_discarded too. */ | |
8921 | skip[val >> 3] = 0; | |
8922 | } | |
8923 | } | |
8924 | ||
8925 | if (sec != toc) | |
8926 | used[val >> 3] = 1; | |
8927 | /* For the toc section, we only mark as used if this | |
8928 | entry itself isn't unused. */ | |
8929 | else if ((used[rel->r_offset >> 3] | |
8930 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8931 | && !used[val >> 3]) | |
8932 | { | |
8933 | /* Do all the relocs again, to catch reference | |
8934 | chains. */ | |
8935 | repeat = 1; | |
8936 | used[val >> 3] = 1; | |
8937 | } | |
8938 | } | |
8939 | } | |
c5614fa4 | 8940 | while (repeat); |
854b41e7 AM |
8941 | |
8942 | if (elf_section_data (sec)->relocs != relstart) | |
8943 | free (relstart); | |
c5614fa4 AM |
8944 | } |
8945 | ||
8946 | /* Merge the used and skip arrays. Assume that TOC | |
8947 | doublewords not appearing as either used or unused belong | |
8948 | to to an entry more than one doubleword in size. */ | |
8949 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8950 | drop < skip + (toc->size + 7) / 8; | |
8951 | ++drop, ++keep) | |
8952 | { | |
8953 | if (*keep) | |
8954 | { | |
ba761f19 AM |
8955 | *drop &= ~ref_from_discarded; |
8956 | if ((*drop & can_optimize) != 0) | |
8957 | some_unused = 1; | |
c5614fa4 AM |
8958 | last = 0; |
8959 | } | |
b140b010 | 8960 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8961 | { |
8962 | some_unused = 1; | |
ba761f19 | 8963 | last = ref_from_discarded; |
c5614fa4 AM |
8964 | } |
8965 | else | |
8966 | *drop = last; | |
8967 | } | |
8968 | ||
8969 | free (used); | |
8970 | ||
8971 | if (some_unused) | |
8972 | { | |
8973 | bfd_byte *contents, *src; | |
8974 | unsigned long off; | |
d62b3684 | 8975 | Elf_Internal_Sym *sym; |
ba761f19 | 8976 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8977 | |
8978 | /* Shuffle the toc contents, and at the same time convert the | |
8979 | skip array from booleans into offsets. */ | |
8980 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8981 | goto error_ret; | |
8982 | ||
8983 | elf_section_data (toc)->this_hdr.contents = contents; | |
8984 | ||
8985 | for (src = contents, off = 0, drop = skip; | |
8986 | src < contents + toc->size; | |
8987 | src += 8, ++drop) | |
8988 | { | |
ba761f19 AM |
8989 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8990 | off += 8; | |
c5614fa4 AM |
8991 | else if (off != 0) |
8992 | { | |
8993 | *drop = off; | |
8994 | memcpy (src - off, src, 8); | |
8995 | } | |
8996 | } | |
854b41e7 | 8997 | *drop = off; |
c5614fa4 AM |
8998 | toc->rawsize = toc->size; |
8999 | toc->size = src - contents - off; | |
9000 | ||
ba761f19 AM |
9001 | /* Adjust addends for relocs against the toc section sym, |
9002 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9003 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9004 | { | |
9005 | if (sec->reloc_count == 0 | |
dbaa2011 | 9006 | || discarded_section (sec)) |
c5614fa4 AM |
9007 | continue; |
9008 | ||
9009 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9010 | info->keep_memory); |
c5614fa4 AM |
9011 | if (relstart == NULL) |
9012 | goto error_ret; | |
9013 | ||
9014 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9015 | { | |
9016 | enum elf_ppc64_reloc_type r_type; | |
9017 | unsigned long r_symndx; | |
9018 | asection *sym_sec; | |
9019 | struct elf_link_hash_entry *h; | |
854b41e7 | 9020 | bfd_vma val; |
c5614fa4 AM |
9021 | |
9022 | r_type = ELF64_R_TYPE (rel->r_info); | |
9023 | switch (r_type) | |
9024 | { | |
9025 | default: | |
9026 | continue; | |
9027 | ||
9028 | case R_PPC64_TOC16: | |
9029 | case R_PPC64_TOC16_LO: | |
9030 | case R_PPC64_TOC16_HI: | |
9031 | case R_PPC64_TOC16_HA: | |
9032 | case R_PPC64_TOC16_DS: | |
9033 | case R_PPC64_TOC16_LO_DS: | |
9034 | case R_PPC64_ADDR64: | |
9035 | break; | |
9036 | } | |
9037 | ||
9038 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9039 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9040 | r_symndx, ibfd)) | |
9041 | goto error_ret; | |
9042 | ||
ba761f19 | 9043 | if (sym_sec != toc) |
c5614fa4 AM |
9044 | continue; |
9045 | ||
ba761f19 AM |
9046 | if (h != NULL) |
9047 | val = h->root.u.def.value; | |
9048 | else | |
9049 | { | |
9050 | val = sym->st_value; | |
9051 | if (val != 0) | |
9052 | local_toc_syms = TRUE; | |
9053 | } | |
9054 | ||
9055 | val += rel->r_addend; | |
854b41e7 AM |
9056 | |
9057 | if (val > toc->rawsize) | |
9058 | val = toc->rawsize; | |
ba761f19 AM |
9059 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9060 | continue; | |
9061 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9062 | { | |
9063 | Elf_Internal_Rela *tocrel | |
425b145b | 9064 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9065 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9066 | ||
9067 | switch (r_type) | |
9068 | { | |
9069 | case R_PPC64_TOC16_HA: | |
9070 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9071 | break; | |
9072 | ||
9073 | case R_PPC64_TOC16_LO_DS: | |
9074 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9075 | break; | |
9076 | ||
9077 | default: | |
28942f62 AM |
9078 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9079 | ppc_howto_init (); | |
b140b010 | 9080 | info->callbacks->einfo |
bc30df16 | 9081 | (_("%P: %H: %s references " |
b140b010 AM |
9082 | "optimized away TOC entry\n"), |
9083 | ibfd, sec, rel->r_offset, | |
9084 | ppc64_elf_howto_table[r_type]->name); | |
9085 | bfd_set_error (bfd_error_bad_value); | |
9086 | goto error_ret; | |
ba761f19 AM |
9087 | } |
9088 | rel->r_addend = tocrel->r_addend; | |
9089 | elf_section_data (sec)->relocs = relstart; | |
9090 | continue; | |
9091 | } | |
9092 | ||
9093 | if (h != NULL || sym->st_value != 0) | |
9094 | continue; | |
854b41e7 AM |
9095 | |
9096 | rel->r_addend -= skip[val >> 3]; | |
9097 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9098 | } |
854b41e7 AM |
9099 | |
9100 | if (elf_section_data (sec)->relocs != relstart) | |
9101 | free (relstart); | |
c5614fa4 AM |
9102 | } |
9103 | ||
9104 | /* We shouldn't have local or global symbols defined in the TOC, | |
9105 | but handle them anyway. */ | |
df22d223 AM |
9106 | if (local_syms != NULL) |
9107 | for (sym = local_syms; | |
9108 | sym < local_syms + symtab_hdr->sh_info; | |
9109 | ++sym) | |
9110 | if (sym->st_value != 0 | |
9111 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9112 | { | |
9113 | unsigned long i; | |
854b41e7 | 9114 | |
df22d223 AM |
9115 | if (sym->st_value > toc->rawsize) |
9116 | i = toc->rawsize >> 3; | |
9117 | else | |
9118 | i = sym->st_value >> 3; | |
854b41e7 | 9119 | |
df22d223 AM |
9120 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9121 | { | |
9122 | if (local_toc_syms) | |
9123 | (*_bfd_error_handler) | |
9124 | (_("%s defined on removed toc entry"), | |
9125 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9126 | do | |
9127 | ++i; | |
9128 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9129 | sym->st_value = (bfd_vma) i << 3; | |
9130 | } | |
d62b3684 | 9131 | |
df22d223 AM |
9132 | sym->st_value -= skip[i]; |
9133 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9134 | } | |
c5614fa4 | 9135 | |
854b41e7 | 9136 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9137 | if (toc_inf.global_toc_syms) |
9138 | { | |
9139 | toc_inf.toc = toc; | |
9140 | toc_inf.skip = skip; | |
9141 | toc_inf.global_toc_syms = FALSE; | |
9142 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9143 | &toc_inf); | |
9144 | } | |
854b41e7 AM |
9145 | |
9146 | if (toc->reloc_count != 0) | |
9147 | { | |
d4730f92 | 9148 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9149 | Elf_Internal_Rela *wrel; |
9150 | bfd_size_type sz; | |
9151 | ||
854b41e7 | 9152 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9153 | if (toc_relocs == NULL) |
9154 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9155 | info->keep_memory); | |
9156 | if (toc_relocs == NULL) | |
9157 | goto error_ret; | |
9158 | ||
425b145b AM |
9159 | wrel = toc_relocs; |
9160 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9161 | if ((skip[rel->r_offset >> 3] |
9162 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9163 | { |
9164 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9165 | wrel->r_info = rel->r_info; | |
9166 | wrel->r_addend = rel->r_addend; | |
9167 | ++wrel; | |
9168 | } | |
9169 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9170 | &local_syms, NULL, NULL)) | |
9171 | goto error_ret; | |
9172 | ||
425b145b AM |
9173 | elf_section_data (toc)->relocs = toc_relocs; |
9174 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9175 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9176 | sz = rel_hdr->sh_entsize; | |
9177 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9178 | } |
c5614fa4 | 9179 | } |
28be611c AM |
9180 | else if (toc_relocs != NULL |
9181 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9182 | free (toc_relocs); |
c5614fa4 AM |
9183 | |
9184 | if (local_syms != NULL | |
9185 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9186 | { | |
9187 | if (!info->keep_memory) | |
9188 | free (local_syms); | |
9189 | else | |
9190 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9191 | } | |
9192 | free (skip); | |
9193 | } | |
9194 | ||
9195 | return TRUE; | |
9196 | } | |
9197 | ||
1bbe0902 AM |
9198 | /* Return true iff input section I references the TOC using |
9199 | instructions limited to +/-32k offsets. */ | |
9200 | ||
9201 | bfd_boolean | |
9202 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9203 | { | |
9204 | return (is_ppc64_elf (i->owner) | |
9205 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9206 | } | |
9207 | ||
927be08e AM |
9208 | /* Allocate space for one GOT entry. */ |
9209 | ||
9210 | static void | |
9211 | allocate_got (struct elf_link_hash_entry *h, | |
9212 | struct bfd_link_info *info, | |
9213 | struct got_entry *gent) | |
9214 | { | |
9215 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9216 | bfd_boolean dyn; | |
9217 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9218 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9219 | ? 16 : 8); | |
9220 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9221 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9222 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9223 | ||
9224 | gent->got.offset = got->size; | |
9225 | got->size += entsize; | |
9226 | ||
9227 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9228 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9229 | { |
33e44f2e | 9230 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9231 | htab->got_reli_size += rentsize; |
927be08e | 9232 | } |
19e08130 AM |
9233 | else if ((info->shared |
9234 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
9235 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9236 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9237 | { |
19e08130 | 9238 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9239 | relgot->size += rentsize; |
927be08e AM |
9240 | } |
9241 | } | |
9242 | ||
7865406b AM |
9243 | /* This function merges got entries in the same toc group. */ |
9244 | ||
9245 | static void | |
9246 | merge_got_entries (struct got_entry **pent) | |
9247 | { | |
9248 | struct got_entry *ent, *ent2; | |
9249 | ||
9250 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9251 | if (!ent->is_indirect) | |
9252 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9253 | if (!ent2->is_indirect | |
9254 | && ent2->addend == ent->addend | |
9255 | && ent2->tls_type == ent->tls_type | |
9256 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9257 | { | |
9258 | ent2->is_indirect = TRUE; | |
9259 | ent2->got.ent = ent; | |
9260 | } | |
9261 | } | |
9262 | ||
65f38f15 AM |
9263 | /* Allocate space in .plt, .got and associated reloc sections for |
9264 | dynamic relocs. */ | |
5bd4f169 | 9265 | |
b34976b6 | 9266 | static bfd_boolean |
4ce794b7 | 9267 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9268 | { |
65f38f15 AM |
9269 | struct bfd_link_info *info; |
9270 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9271 | asection *s; |
65f38f15 | 9272 | struct ppc_link_hash_entry *eh; |
6061a67d | 9273 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9274 | struct got_entry **pgent, *gent; |
5bd4f169 | 9275 | |
e92d460e | 9276 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9277 | return TRUE; |
5bd4f169 | 9278 | |
65f38f15 AM |
9279 | info = (struct bfd_link_info *) inf; |
9280 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9281 | if (htab == NULL) |
9282 | return FALSE; | |
5bd4f169 | 9283 | |
e054468f AM |
9284 | if ((htab->elf.dynamic_sections_created |
9285 | && h->dynindx != -1 | |
9286 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
9287 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 9288 | { |
411e1bfb AM |
9289 | struct plt_entry *pent; |
9290 | bfd_boolean doneone = FALSE; | |
9291 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9292 | if (pent->plt.refcount > 0) | |
9293 | { | |
25f23106 AM |
9294 | if (!htab->elf.dynamic_sections_created |
9295 | || h->dynindx == -1) | |
e054468f | 9296 | { |
33e44f2e | 9297 | s = htab->elf.iplt; |
e054468f | 9298 | pent->plt.offset = s->size; |
b9e5796b | 9299 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9300 | s = htab->elf.irelplt; |
e054468f AM |
9301 | } |
9302 | else | |
9303 | { | |
9304 | /* If this is the first .plt entry, make room for the special | |
9305 | first entry. */ | |
33e44f2e | 9306 | s = htab->elf.splt; |
e054468f | 9307 | if (s->size == 0) |
b9e5796b | 9308 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9309 | |
9310 | pent->plt.offset = s->size; | |
9311 | ||
9312 | /* Make room for this entry. */ | |
b9e5796b | 9313 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9314 | |
9315 | /* Make room for the .glink code. */ | |
9316 | s = htab->glink; | |
9317 | if (s->size == 0) | |
9318 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9319 | if (htab->opd_abi) |
9320 | { | |
9321 | /* We need bigger stubs past index 32767. */ | |
9322 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9323 | s->size += 4; | |
9324 | s->size += 2*4; | |
9325 | } | |
9326 | else | |
e054468f | 9327 | s->size += 4; |
e054468f AM |
9328 | |
9329 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9330 | s = htab->elf.srelplt; |
e054468f | 9331 | } |
eea6121a | 9332 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9333 | doneone = TRUE; |
9334 | } | |
9335 | else | |
9336 | pent->plt.offset = (bfd_vma) -1; | |
9337 | if (!doneone) | |
65f38f15 | 9338 | { |
411e1bfb | 9339 | h->plt.plist = NULL; |
f5385ebf | 9340 | h->needs_plt = 0; |
65f38f15 AM |
9341 | } |
9342 | } | |
9343 | else | |
9344 | { | |
411e1bfb | 9345 | h->plt.plist = NULL; |
f5385ebf | 9346 | h->needs_plt = 0; |
65f38f15 AM |
9347 | } |
9348 | ||
951fd09b AM |
9349 | eh = (struct ppc_link_hash_entry *) h; |
9350 | /* Run through the TLS GD got entries first if we're changing them | |
9351 | to TPREL. */ | |
e7b938ca | 9352 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9353 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9354 | if (gent->got.refcount > 0 | |
9355 | && (gent->tls_type & TLS_GD) != 0) | |
9356 | { | |
9357 | /* This was a GD entry that has been converted to TPREL. If | |
9358 | there happens to be a TPREL entry we can use that one. */ | |
9359 | struct got_entry *ent; | |
9360 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9361 | if (ent->got.refcount > 0 | |
9362 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9363 | && ent->addend == gent->addend |
9364 | && ent->owner == gent->owner) | |
951fd09b AM |
9365 | { |
9366 | gent->got.refcount = 0; | |
9367 | break; | |
9368 | } | |
9369 | ||
9370 | /* If not, then we'll be using our own TPREL entry. */ | |
9371 | if (gent->got.refcount != 0) | |
9372 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9373 | } | |
9374 | ||
7865406b AM |
9375 | /* Remove any list entry that won't generate a word in the GOT before |
9376 | we call merge_got_entries. Otherwise we risk merging to empty | |
9377 | entries. */ | |
0b8bcf0d AM |
9378 | pgent = &h->got.glist; |
9379 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9380 | if (gent->got.refcount > 0) |
7865406b AM |
9381 | { |
9382 | if ((gent->tls_type & TLS_LD) != 0 | |
9383 | && !h->def_dynamic) | |
9384 | { | |
9385 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9386 | *pgent = gent->next; | |
9387 | } | |
9388 | else | |
9389 | pgent = &gent->next; | |
9390 | } | |
9391 | else | |
9392 | *pgent = gent->next; | |
9393 | ||
9394 | if (!htab->do_multi_toc) | |
9395 | merge_got_entries (&h->got.glist); | |
9396 | ||
9397 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9398 | if (!gent->is_indirect) | |
411e1bfb AM |
9399 | { |
9400 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9401 | Undefined weak syms won't yet be marked as dynamic, |
9402 | nor will all TLS symbols. */ | |
411e1bfb | 9403 | if (h->dynindx == -1 |
b099ab9f | 9404 | && !h->forced_local |
25f23106 | 9405 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9406 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9407 | { |
c152c796 | 9408 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9409 | return FALSE; |
9410 | } | |
65f38f15 | 9411 | |
0c8d6e5c | 9412 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9413 | abort (); |
0ffa91dd | 9414 | |
927be08e | 9415 | allocate_got (h, info, gent); |
411e1bfb | 9416 | } |
65f38f15 | 9417 | |
b099ab9f | 9418 | if (eh->dyn_relocs == NULL |
25f23106 | 9419 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9420 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9421 | return TRUE; |
65f38f15 AM |
9422 | |
9423 | /* In the shared -Bsymbolic case, discard space allocated for | |
9424 | dynamic pc-relative relocs against symbols which turn out to be | |
9425 | defined in regular objects. For the normal shared case, discard | |
9426 | space for relocs that have become local due to symbol visibility | |
9427 | changes. */ | |
9428 | ||
9429 | if (info->shared) | |
9430 | { | |
9c7a29a3 | 9431 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9432 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9433 | generated via assembly. We want calls to protected symbols to |
9434 | resolve directly to the function rather than going via the plt. | |
9435 | If people want function pointer comparisons to work as expected | |
9436 | then they should avoid writing weird assembly. */ | |
09695f56 | 9437 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9438 | { |
6061a67d | 9439 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9440 | |
9441 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9442 | { |
65f38f15 AM |
9443 | p->count -= p->pc_count; |
9444 | p->pc_count = 0; | |
9445 | if (p->count == 0) | |
9446 | *pp = p->next; | |
9447 | else | |
9448 | pp = &p->next; | |
5bd4f169 | 9449 | } |
65f38f15 | 9450 | } |
4e795f50 AM |
9451 | |
9452 | /* Also discard relocs on undefined weak syms with non-default | |
9453 | visibility. */ | |
cab87ef9 AM |
9454 | if (eh->dyn_relocs != NULL |
9455 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9456 | { |
9457 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9458 | eh->dyn_relocs = NULL; | |
9459 | ||
9460 | /* Make sure this symbol is output as a dynamic symbol. | |
9461 | Undefined weak syms won't yet be marked as dynamic. */ | |
9462 | else if (h->dynindx == -1 | |
9463 | && !h->forced_local) | |
9464 | { | |
9465 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9466 | return FALSE; | |
9467 | } | |
9468 | } | |
65f38f15 | 9469 | } |
25f23106 AM |
9470 | else if (h->type == STT_GNU_IFUNC) |
9471 | { | |
9472 | if (!h->non_got_ref) | |
9473 | eh->dyn_relocs = NULL; | |
9474 | } | |
f4656909 | 9475 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9476 | { |
9477 | /* For the non-shared case, discard space for relocs against | |
9478 | symbols which turn out to need copy relocs or are not | |
9479 | dynamic. */ | |
9480 | ||
f5385ebf | 9481 | if (!h->non_got_ref |
f5385ebf | 9482 | && !h->def_regular) |
65f38f15 AM |
9483 | { |
9484 | /* Make sure this symbol is output as a dynamic symbol. | |
9485 | Undefined weak syms won't yet be marked as dynamic. */ | |
9486 | if (h->dynindx == -1 | |
f5385ebf | 9487 | && !h->forced_local) |
65f38f15 | 9488 | { |
c152c796 | 9489 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9490 | return FALSE; |
65f38f15 AM |
9491 | } |
9492 | ||
9493 | /* If that succeeded, we know we'll be keeping all the | |
9494 | relocs. */ | |
9495 | if (h->dynindx != -1) | |
9496 | goto keep; | |
9497 | } | |
9498 | ||
9499 | eh->dyn_relocs = NULL; | |
9500 | ||
ec338859 | 9501 | keep: ; |
65f38f15 AM |
9502 | } |
9503 | ||
9504 | /* Finally, allocate space. */ | |
9505 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9506 | { | |
9507 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9508 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9509 | sreloc = htab->elf.irelplt; |
eea6121a | 9510 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9511 | } |
9512 | ||
b34976b6 | 9513 | return TRUE; |
65f38f15 AM |
9514 | } |
9515 | ||
a345bc8d AM |
9516 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9517 | to set up space for global entry stubs. These are put in glink, | |
9518 | after the branch table. */ | |
65f38f15 | 9519 | |
b34976b6 | 9520 | static bfd_boolean |
a345bc8d | 9521 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9522 | { |
a345bc8d AM |
9523 | struct bfd_link_info *info; |
9524 | struct ppc_link_hash_table *htab; | |
9525 | struct plt_entry *pent; | |
9526 | asection *s; | |
65f38f15 | 9527 | |
a345bc8d AM |
9528 | if (h->root.type == bfd_link_hash_indirect) |
9529 | return TRUE; | |
65f38f15 | 9530 | |
a345bc8d AM |
9531 | if (!h->pointer_equality_needed) |
9532 | return TRUE; | |
65f38f15 | 9533 | |
a345bc8d AM |
9534 | if (h->def_regular) |
9535 | return TRUE; | |
65f38f15 | 9536 | |
a345bc8d AM |
9537 | info = inf; |
9538 | htab = ppc_hash_table (info); | |
9539 | if (htab == NULL) | |
9540 | return FALSE; | |
9541 | ||
9542 | s = htab->glink; | |
9543 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9544 | if (pent->plt.offset != (bfd_vma) -1 | |
9545 | && pent->addend == 0) | |
9546 | { | |
afe397ea AM |
9547 | /* For ELFv2, if this symbol is not defined in a regular file |
9548 | and we are not generating a shared library or pie, then we | |
9549 | need to define the symbol in the executable on a call stub. | |
9550 | This is to avoid text relocations. */ | |
a345bc8d | 9551 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9552 | h->root.u.def.section = s; |
9553 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9554 | s->size += 16; |
9555 | break; | |
9556 | } | |
9557 | return TRUE; | |
9558 | } | |
9559 | ||
9560 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9561 | read-only sections. */ | |
9562 | ||
9563 | static bfd_boolean | |
9564 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9565 | { | |
9566 | if (h->root.type == bfd_link_hash_indirect) | |
9567 | return TRUE; | |
9568 | ||
9569 | if (readonly_dynrelocs (h)) | |
9570 | { | |
9571 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9572 | ||
9573 | /* Not an error, just cut short the traversal. */ | |
9574 | return FALSE; | |
65f38f15 | 9575 | } |
b34976b6 | 9576 | return TRUE; |
65f38f15 AM |
9577 | } |
9578 | ||
9579 | /* Set the sizes of the dynamic sections. */ | |
9580 | ||
b34976b6 | 9581 | static bfd_boolean |
ee67d69a | 9582 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9583 | struct bfd_link_info *info) |
65f38f15 AM |
9584 | { |
9585 | struct ppc_link_hash_table *htab; | |
9586 | bfd *dynobj; | |
9587 | asection *s; | |
b34976b6 | 9588 | bfd_boolean relocs; |
65f38f15 | 9589 | bfd *ibfd; |
7865406b | 9590 | struct got_entry *first_tlsld; |
65f38f15 AM |
9591 | |
9592 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9593 | if (htab == NULL) |
9594 | return FALSE; | |
9595 | ||
65f38f15 AM |
9596 | dynobj = htab->elf.dynobj; |
9597 | if (dynobj == NULL) | |
9598 | abort (); | |
9599 | ||
9600 | if (htab->elf.dynamic_sections_created) | |
9601 | { | |
9602 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9603 | if (info->executable) |
65f38f15 | 9604 | { |
3d4d4302 | 9605 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9606 | if (s == NULL) |
9607 | abort (); | |
eea6121a | 9608 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9609 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9610 | } | |
9611 | } | |
9612 | ||
9613 | /* Set up .got offsets for local syms, and space for local dynamic | |
9614 | relocs. */ | |
9615 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9616 | { | |
411e1bfb AM |
9617 | struct got_entry **lgot_ents; |
9618 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9619 | struct plt_entry **local_plt; |
9620 | struct plt_entry **end_local_plt; | |
f961d9dd | 9621 | unsigned char *lgot_masks; |
65f38f15 AM |
9622 | bfd_size_type locsymcount; |
9623 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9624 | |
0c8d6e5c | 9625 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9626 | continue; |
9627 | ||
9628 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9629 | { | |
19e08130 | 9630 | struct ppc_dyn_relocs *p; |
65f38f15 | 9631 | |
6edfbbad | 9632 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9633 | { |
ec338859 AM |
9634 | if (!bfd_is_abs_section (p->sec) |
9635 | && bfd_is_abs_section (p->sec->output_section)) | |
9636 | { | |
9637 | /* Input section has been discarded, either because | |
9638 | it is a copy of a linkonce section or due to | |
9639 | linker script /DISCARD/, so we'll be discarding | |
9640 | the relocs too. */ | |
9641 | } | |
248866a8 | 9642 | else if (p->count != 0) |
ec338859 | 9643 | { |
19e08130 AM |
9644 | asection *srel = elf_section_data (p->sec)->sreloc; |
9645 | if (p->ifunc) | |
33e44f2e | 9646 | srel = htab->elf.irelplt; |
eea6121a | 9647 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9648 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9649 | info->flags |= DF_TEXTREL; | |
ec338859 | 9650 | } |
65f38f15 AM |
9651 | } |
9652 | } | |
9653 | ||
411e1bfb AM |
9654 | lgot_ents = elf_local_got_ents (ibfd); |
9655 | if (!lgot_ents) | |
65f38f15 AM |
9656 | continue; |
9657 | ||
0ffa91dd | 9658 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9659 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9660 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9661 | local_plt = (struct plt_entry **) end_lgot_ents; |
9662 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9663 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9664 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9665 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9666 | { |
0b8bcf0d | 9667 | struct got_entry **pent, *ent; |
411e1bfb | 9668 | |
0b8bcf0d AM |
9669 | pent = lgot_ents; |
9670 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9671 | if (ent->got.refcount > 0) |
9672 | { | |
e7b938ca | 9673 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9674 | { |
927be08e | 9675 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9676 | *pent = ent->next; |
411e1bfb AM |
9677 | } |
9678 | else | |
9679 | { | |
19e08130 AM |
9680 | unsigned int ent_size = 8; |
9681 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9682 | ||
eea6121a | 9683 | ent->got.offset = s->size; |
e7b938ca | 9684 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9685 | { |
19e08130 AM |
9686 | ent_size *= 2; |
9687 | rel_size *= 2; | |
9688 | } | |
9689 | s->size += ent_size; | |
9690 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9691 | { | |
33e44f2e | 9692 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9693 | htab->got_reli_size += rel_size; |
9694 | } | |
9695 | else if (info->shared) | |
9696 | { | |
9697 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9698 | srel->size += rel_size; | |
927be08e | 9699 | } |
0b8bcf0d | 9700 | pent = &ent->next; |
411e1bfb AM |
9701 | } |
9702 | } | |
9703 | else | |
0b8bcf0d | 9704 | *pent = ent->next; |
65f38f15 | 9705 | } |
e054468f AM |
9706 | |
9707 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9708 | for (; local_plt < end_local_plt; ++local_plt) | |
9709 | { | |
9710 | struct plt_entry *ent; | |
9711 | ||
9712 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9713 | if (ent->plt.refcount > 0) | |
9714 | { | |
33e44f2e | 9715 | s = htab->elf.iplt; |
e054468f | 9716 | ent->plt.offset = s->size; |
b9e5796b | 9717 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9718 | |
33e44f2e | 9719 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9720 | } |
9721 | else | |
9722 | ent->plt.offset = (bfd_vma) -1; | |
9723 | } | |
65f38f15 AM |
9724 | } |
9725 | ||
9726 | /* Allocate global sym .plt and .got entries, and space for global | |
9727 | sym dynamic relocs. */ | |
4ce794b7 | 9728 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9729 | /* Stash the end of glink branch table. */ |
9730 | if (htab->glink != NULL) | |
9731 | htab->glink->rawsize = htab->glink->size; | |
9732 | ||
9733 | if (!htab->opd_abi && !info->shared) | |
9734 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
65f38f15 | 9735 | |
7865406b | 9736 | first_tlsld = NULL; |
102890f0 AM |
9737 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9738 | { | |
7865406b AM |
9739 | struct got_entry *ent; |
9740 | ||
0c8d6e5c | 9741 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9742 | continue; |
9743 | ||
7865406b AM |
9744 | ent = ppc64_tlsld_got (ibfd); |
9745 | if (ent->got.refcount > 0) | |
102890f0 | 9746 | { |
7865406b | 9747 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9748 | { |
7865406b AM |
9749 | ent->is_indirect = TRUE; |
9750 | ent->got.ent = first_tlsld; | |
9751 | } | |
9752 | else | |
9753 | { | |
9754 | if (first_tlsld == NULL) | |
9755 | first_tlsld = ent; | |
9756 | s = ppc64_elf_tdata (ibfd)->got; | |
9757 | ent->got.offset = s->size; | |
9758 | ent->owner = ibfd; | |
9759 | s->size += 16; | |
9760 | if (info->shared) | |
9761 | { | |
9762 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9763 | srel->size += sizeof (Elf64_External_Rela); | |
9764 | } | |
102890f0 AM |
9765 | } |
9766 | } | |
9767 | else | |
7865406b | 9768 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9769 | } |
9770 | ||
65f38f15 AM |
9771 | /* We now have determined the sizes of the various dynamic sections. |
9772 | Allocate memory for them. */ | |
b34976b6 | 9773 | relocs = FALSE; |
65f38f15 AM |
9774 | for (s = dynobj->sections; s != NULL; s = s->next) |
9775 | { | |
9776 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9777 | continue; | |
9778 | ||
4ce794b7 | 9779 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9780 | /* These haven't been allocated yet; don't strip. */ |
9781 | continue; | |
33e44f2e AM |
9782 | else if (s == htab->elf.sgot |
9783 | || s == htab->elf.splt | |
9784 | || s == htab->elf.iplt | |
c456f082 AM |
9785 | || s == htab->glink |
9786 | || s == htab->dynbss) | |
65f38f15 AM |
9787 | { |
9788 | /* Strip this section if we don't need it; see the | |
9789 | comment below. */ | |
5bd4f169 | 9790 | } |
58d180e8 AM |
9791 | else if (s == htab->glink_eh_frame) |
9792 | { | |
9793 | if (!bfd_is_abs_section (s->output_section)) | |
9794 | /* Not sized yet. */ | |
9795 | continue; | |
9796 | } | |
70cc837d | 9797 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9798 | { |
c456f082 | 9799 | if (s->size != 0) |
5bd4f169 | 9800 | { |
33e44f2e | 9801 | if (s != htab->elf.srelplt) |
b34976b6 | 9802 | relocs = TRUE; |
5bd4f169 AM |
9803 | |
9804 | /* We use the reloc_count field as a counter if we need | |
9805 | to copy relocs into the output file. */ | |
9806 | s->reloc_count = 0; | |
9807 | } | |
9808 | } | |
65f38f15 | 9809 | else |
5bd4f169 AM |
9810 | { |
9811 | /* It's not one of our sections, so don't allocate space. */ | |
9812 | continue; | |
9813 | } | |
9814 | ||
eea6121a | 9815 | if (s->size == 0) |
5bd4f169 | 9816 | { |
c456f082 AM |
9817 | /* If we don't need this section, strip it from the |
9818 | output file. This is mostly to handle .rela.bss and | |
9819 | .rela.plt. We must create both sections in | |
9820 | create_dynamic_sections, because they must be created | |
9821 | before the linker maps input sections to output | |
9822 | sections. The linker does that before | |
9823 | adjust_dynamic_symbol is called, and it is that | |
9824 | function which decides whether anything needs to go | |
9825 | into these sections. */ | |
8423293d | 9826 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9827 | continue; |
9828 | } | |
9829 | ||
c456f082 | 9830 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9831 | continue; |
9832 | ||
65f38f15 AM |
9833 | /* Allocate memory for the section contents. We use bfd_zalloc |
9834 | here in case unused entries are not reclaimed before the | |
9835 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9836 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9837 | sections instead of garbage. | |
9838 | We also rely on the section contents being zero when writing | |
9839 | the GOT. */ | |
eea6121a | 9840 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9841 | if (s->contents == NULL) |
b34976b6 | 9842 | return FALSE; |
5bd4f169 AM |
9843 | } |
9844 | ||
e717da7e AM |
9845 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9846 | { | |
0c8d6e5c | 9847 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9848 | continue; |
9849 | ||
e717da7e | 9850 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9851 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9852 | { |
eea6121a | 9853 | if (s->size == 0) |
8423293d | 9854 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9855 | else |
9856 | { | |
eea6121a | 9857 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9858 | if (s->contents == NULL) |
9859 | return FALSE; | |
9860 | } | |
9861 | } | |
9862 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9863 | if (s != NULL) | |
9864 | { | |
eea6121a | 9865 | if (s->size == 0) |
8423293d | 9866 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9867 | else |
9868 | { | |
eea6121a | 9869 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9870 | if (s->contents == NULL) |
9871 | return FALSE; | |
9872 | relocs = TRUE; | |
9873 | s->reloc_count = 0; | |
9874 | } | |
9875 | } | |
9876 | } | |
9877 | ||
e86ce104 | 9878 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9879 | { |
e8910a83 AM |
9880 | bfd_boolean tls_opt; |
9881 | ||
5bd4f169 AM |
9882 | /* Add some entries to the .dynamic section. We fill in the |
9883 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9884 | must add the entries now so that we get the correct size for | |
9885 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9886 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9887 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9888 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9889 | |
36af4a4e | 9890 | if (info->executable) |
5bd4f169 | 9891 | { |
dc810e39 | 9892 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9893 | return FALSE; |
5bd4f169 AM |
9894 | } |
9895 | ||
33e44f2e | 9896 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9897 | { |
dc810e39 AM |
9898 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9899 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9900 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9901 | || !add_dynamic_entry (DT_JMPREL, 0) |
9902 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9903 | return FALSE; |
5bd4f169 AM |
9904 | } |
9905 | ||
ee67d69a | 9906 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9907 | { |
9908 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9909 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9910 | return FALSE; |
19397422 AM |
9911 | } |
9912 | ||
e8910a83 AM |
9913 | tls_opt = (!htab->no_tls_get_addr_opt |
9914 | && htab->tls_get_addr_fd != NULL | |
9915 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9916 | if (tls_opt || !htab->opd_abi) | |
9917 | { | |
9918 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9919 | return FALSE; | |
9920 | } | |
a7f2871e | 9921 | |
5bd4f169 AM |
9922 | if (relocs) |
9923 | { | |
dc810e39 AM |
9924 | if (!add_dynamic_entry (DT_RELA, 0) |
9925 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9926 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9927 | return FALSE; |
5bd4f169 | 9928 | |
65f38f15 AM |
9929 | /* If any dynamic relocs apply to a read-only section, |
9930 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9931 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9932 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9933 | |
65f38f15 | 9934 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9935 | { |
65f38f15 | 9936 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9937 | return FALSE; |
5bd4f169 | 9938 | } |
5bd4f169 | 9939 | } |
5bd4f169 | 9940 | } |
65f38f15 | 9941 | #undef add_dynamic_entry |
5bd4f169 | 9942 | |
b34976b6 | 9943 | return TRUE; |
5bd4f169 AM |
9944 | } |
9945 | ||
a345bc8d AM |
9946 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9947 | ||
9948 | static bfd_boolean | |
9949 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9950 | { | |
9951 | if (h->plt.plist != NULL | |
9952 | && !h->def_regular | |
9953 | && !h->pointer_equality_needed) | |
9954 | return FALSE; | |
9955 | ||
9956 | return _bfd_elf_hash_symbol (h); | |
9957 | } | |
9958 | ||
721956f4 | 9959 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9960 | |
4ce794b7 AM |
9961 | static inline enum ppc_stub_type |
9962 | ppc_type_of_stub (asection *input_sec, | |
9963 | const Elf_Internal_Rela *rel, | |
9964 | struct ppc_link_hash_entry **hash, | |
e054468f | 9965 | struct plt_entry **plt_ent, |
6911b7dc AM |
9966 | bfd_vma destination, |
9967 | unsigned long local_off) | |
5bd4f169 | 9968 | { |
721956f4 AM |
9969 | struct ppc_link_hash_entry *h = *hash; |
9970 | bfd_vma location; | |
9971 | bfd_vma branch_offset; | |
9972 | bfd_vma max_branch_offset; | |
4ce794b7 | 9973 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9974 | |
721956f4 AM |
9975 | if (h != NULL) |
9976 | { | |
e054468f | 9977 | struct plt_entry *ent; |
7fe2b9a6 | 9978 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9979 | if (h->oh != NULL |
9980 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9981 | { |
9982 | fdh = ppc_follow_link (h->oh); | |
9983 | *hash = fdh; | |
9984 | } | |
8387904d | 9985 | |
e054468f AM |
9986 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9987 | if (ent->addend == rel->r_addend | |
9988 | && ent->plt.offset != (bfd_vma) -1) | |
9989 | { | |
e054468f AM |
9990 | *plt_ent = ent; |
9991 | return ppc_stub_plt_call; | |
9992 | } | |
5bd4f169 | 9993 | |
7fe2b9a6 AM |
9994 | /* Here, we know we don't have a plt entry. If we don't have a |
9995 | either a defined function descriptor or a defined entry symbol | |
9996 | in a regular object file, then it is pointless trying to make | |
9997 | any other type of stub. */ | |
854b41e7 AM |
9998 | if (!is_static_defined (&fdh->elf) |
9999 | && !is_static_defined (&h->elf)) | |
721956f4 | 10000 | return ppc_stub_none; |
5d1634d7 | 10001 | } |
e054468f AM |
10002 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10003 | { | |
10004 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10005 | struct plt_entry **local_plt = (struct plt_entry **) | |
10006 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10007 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10008 | ||
10009 | if (local_plt[r_symndx] != NULL) | |
10010 | { | |
10011 | struct plt_entry *ent; | |
10012 | ||
10013 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10014 | if (ent->addend == rel->r_addend | |
10015 | && ent->plt.offset != (bfd_vma) -1) | |
10016 | { | |
10017 | *plt_ent = ent; | |
10018 | return ppc_stub_plt_call; | |
10019 | } | |
10020 | } | |
10021 | } | |
5d1634d7 | 10022 | |
721956f4 AM |
10023 | /* Determine where the call point is. */ |
10024 | location = (input_sec->output_offset | |
10025 | + input_sec->output_section->vma | |
10026 | + rel->r_offset); | |
5d1634d7 | 10027 | |
721956f4 AM |
10028 | branch_offset = destination - location; |
10029 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10030 | |
721956f4 AM |
10031 | /* Determine if a long branch stub is needed. */ |
10032 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10033 | if (r_type != R_PPC64_REL24) |
721956f4 | 10034 | max_branch_offset = 1 << 15; |
5d1634d7 | 10035 | |
6911b7dc | 10036 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10037 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10038 | is needed later. */ | |
10039 | return ppc_stub_long_branch; | |
5d1634d7 | 10040 | |
721956f4 | 10041 | return ppc_stub_none; |
5d1634d7 AM |
10042 | } |
10043 | ||
794e51c0 AM |
10044 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10045 | to update a plt entry in one thread and have another thread see a | |
10046 | stale zero toc entry. To avoid this we need some sort of acquire | |
10047 | barrier in the call stub. One solution is to make the load of the | |
10048 | toc word seem to appear to depend on the load of the function entry | |
10049 | word. Another solution is to test for r2 being zero, and branch to | |
10050 | the appropriate glink entry if so. | |
10051 | ||
10052 | . fake dep barrier compare | |
71a39c98 AM |
10053 | . ld 12,xxx(2) ld 12,xxx(2) |
10054 | . mtctr 12 mtctr 12 | |
10055 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10056 | . add 2,2,11 cmpldi 2,0 |
10057 | . ld 2,xxx+8(2) bnectr+ | |
10058 | . bctr b <glink_entry> | |
10059 | ||
10060 | The solution involving the compare turns out to be faster, so | |
10061 | that's what we use unless the branch won't reach. */ | |
10062 | ||
10063 | #define ALWAYS_USE_FAKE_DEP 0 | |
10064 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10065 | |
5d1634d7 AM |
10066 | #define PPC_LO(v) ((v) & 0xffff) |
10067 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10068 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10069 | ||
794e51c0 AM |
10070 | static inline unsigned int |
10071 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10072 | struct ppc_stub_hash_entry *stub_entry, | |
10073 | bfd_vma off) | |
10074 | { | |
b9e5796b AM |
10075 | unsigned size = 12; |
10076 | ||
10077 | if (ALWAYS_EMIT_R2SAVE | |
10078 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10079 | size += 4; | |
10080 | if (PPC_HA (off) != 0) | |
794e51c0 | 10081 | size += 4; |
b9e5796b AM |
10082 | if (htab->opd_abi) |
10083 | { | |
10084 | size += 4; | |
10085 | if (htab->plt_static_chain) | |
10086 | size += 4; | |
10087 | if (htab->plt_thread_safe) | |
10088 | size += 8; | |
10089 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) | |
10090 | size += 4; | |
10091 | } | |
794e51c0 AM |
10092 | if (stub_entry->h != NULL |
10093 | && (stub_entry->h == htab->tls_get_addr_fd | |
10094 | || stub_entry->h == htab->tls_get_addr) | |
10095 | && !htab->no_tls_get_addr_opt) | |
10096 | size += 13 * 4; | |
10097 | return size; | |
10098 | } | |
10099 | ||
10100 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10101 | then return the padding needed to do so. */ | |
10102 | static inline unsigned int | |
10103 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10104 | struct ppc_stub_hash_entry *stub_entry, | |
10105 | bfd_vma plt_off) | |
10106 | { | |
10107 | int stub_align = 1 << htab->plt_stub_align; | |
10108 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); | |
10109 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
10110 | ||
10111 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
10112 | > (stub_size & -stub_align)) | |
10113 | return stub_align - (stub_off & (stub_align - 1)); | |
10114 | return 0; | |
10115 | } | |
10116 | ||
10117 | /* Build a .plt call stub. */ | |
10118 | ||
10119 | static inline bfd_byte * | |
10120 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10121 | struct ppc_stub_hash_entry *stub_entry, | |
10122 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10123 | { | |
10124 | bfd *obfd = htab->stub_bfd; | |
b9e5796b | 10125 | bfd_boolean plt_load_toc = htab->opd_abi; |
794e51c0 AM |
10126 | bfd_boolean plt_static_chain = htab->plt_static_chain; |
10127 | bfd_boolean plt_thread_safe = htab->plt_thread_safe; | |
10128 | bfd_boolean use_fake_dep = plt_thread_safe; | |
10129 | bfd_vma cmp_branch_off = 0; | |
10130 | ||
10131 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10132 | && plt_load_toc |
794e51c0 AM |
10133 | && plt_thread_safe |
10134 | && !(stub_entry->h != NULL | |
10135 | && (stub_entry->h == htab->tls_get_addr_fd | |
10136 | || stub_entry->h == htab->tls_get_addr) | |
10137 | && !htab->no_tls_get_addr_opt)) | |
10138 | { | |
10139 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10140 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10141 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10142 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10143 | bfd_vma to, from; | |
10144 | ||
68d62958 AM |
10145 | if (pltindex > 32768) |
10146 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10147 | to = (glinkoff |
10148 | + htab->glink->output_offset | |
10149 | + htab->glink->output_section->vma); | |
10150 | from = (p - stub_entry->stub_sec->contents | |
10151 | + 4 * (ALWAYS_EMIT_R2SAVE | |
10152 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10153 | + 4 * (PPC_HA (offset) != 0) | |
10154 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10155 | != PPC_HA (offset)) | |
10156 | + 4 * (plt_static_chain != 0) | |
10157 | + 20 | |
10158 | + stub_entry->stub_sec->output_offset | |
10159 | + stub_entry->stub_sec->output_section->vma); | |
10160 | cmp_branch_off = to - from; | |
10161 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10162 | } | |
10163 | ||
ac2df442 AM |
10164 | if (PPC_HA (offset) != 0) |
10165 | { | |
176a0d42 AM |
10166 | if (r != NULL) |
10167 | { | |
794e51c0 AM |
10168 | if (ALWAYS_EMIT_R2SAVE |
10169 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10170 | r[0].r_offset += 4; | |
176a0d42 | 10171 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10172 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10173 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10174 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10175 | if (plt_load_toc) |
176a0d42 | 10176 | { |
b9e5796b | 10177 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10178 | { |
b9e5796b AM |
10179 | r[2].r_offset = r[1].r_offset + 4; |
10180 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10181 | r[2].r_addend = r[0].r_addend; | |
10182 | } | |
10183 | else | |
10184 | { | |
10185 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10186 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10187 | r[2].r_addend = r[0].r_addend + 8; | |
10188 | if (plt_static_chain) | |
10189 | { | |
10190 | r[3].r_offset = r[2].r_offset + 4; | |
10191 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10192 | r[3].r_addend = r[0].r_addend + 16; | |
10193 | } | |
c7131b65 | 10194 | } |
176a0d42 AM |
10195 | } |
10196 | } | |
794e51c0 AM |
10197 | if (ALWAYS_EMIT_R2SAVE |
10198 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10199 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 AM |
10200 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; |
10201 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
b9e5796b AM |
10202 | if (plt_load_toc |
10203 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10204 | { |
71a39c98 | 10205 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10206 | offset = 0; |
10207 | } | |
71a39c98 | 10208 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10209 | if (plt_load_toc) |
794e51c0 | 10210 | { |
b9e5796b AM |
10211 | if (use_fake_dep) |
10212 | { | |
10213 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10214 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10215 | } | |
10216 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10217 | if (plt_static_chain) | |
10218 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10219 | } |
ac2df442 AM |
10220 | } |
10221 | else | |
10222 | { | |
176a0d42 AM |
10223 | if (r != NULL) |
10224 | { | |
794e51c0 AM |
10225 | if (ALWAYS_EMIT_R2SAVE |
10226 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10227 | r[0].r_offset += 4; | |
176a0d42 | 10228 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10229 | if (plt_load_toc) |
176a0d42 | 10230 | { |
b9e5796b | 10231 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10232 | { |
b9e5796b AM |
10233 | r[1].r_offset = r[0].r_offset + 4; |
10234 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10235 | r[1].r_addend = r[0].r_addend; | |
10236 | } | |
10237 | else | |
10238 | { | |
10239 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10240 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10241 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10242 | if (plt_static_chain) | |
10243 | { | |
10244 | r[2].r_offset = r[1].r_offset + 4; | |
10245 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10246 | r[2].r_addend = r[0].r_addend + 8; | |
10247 | } | |
c7131b65 | 10248 | } |
176a0d42 AM |
10249 | } |
10250 | } | |
794e51c0 AM |
10251 | if (ALWAYS_EMIT_R2SAVE |
10252 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10253 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10254 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10255 | if (plt_load_toc |
10256 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10257 | { |
10258 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10259 | offset = 0; | |
10260 | } | |
71a39c98 | 10261 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10262 | if (plt_load_toc) |
794e51c0 | 10263 | { |
b9e5796b AM |
10264 | if (use_fake_dep) |
10265 | { | |
10266 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10267 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10268 | } | |
10269 | if (plt_static_chain) | |
10270 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10271 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10272 | } |
ac2df442 | 10273 | } |
b9e5796b | 10274 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10275 | { |
10276 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10277 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10278 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10279 | } |
10280 | else | |
10281 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10282 | return p; |
10283 | } | |
10284 | ||
a7f2871e AM |
10285 | /* Build a special .plt call stub for __tls_get_addr. */ |
10286 | ||
10287 | #define LD_R11_0R3 0xe9630000 | |
10288 | #define LD_R12_0R3 0xe9830000 | |
10289 | #define MR_R0_R3 0x7c601b78 | |
10290 | #define CMPDI_R11_0 0x2c2b0000 | |
10291 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10292 | #define BEQLR 0x4d820020 | |
10293 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10294 | #define STD_R11_0R1 0xf9610000 |
10295 | #define BCTRL 0x4e800421 | |
10296 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10297 | #define MTLR_R11 0x7d6803a6 |
10298 | ||
10299 | static inline bfd_byte * | |
794e51c0 AM |
10300 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10301 | struct ppc_stub_hash_entry *stub_entry, | |
10302 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10303 | { |
794e51c0 AM |
10304 | bfd *obfd = htab->stub_bfd; |
10305 | ||
a7f2871e AM |
10306 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10307 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10308 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10309 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10310 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10311 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10312 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10313 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10314 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10315 | |
10316 | if (r != NULL) | |
10317 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10318 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10319 | bfd_put_32 (obfd, BCTRL, p - 4); |
10320 | ||
a078d95a AM |
10321 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
10322 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
a7f2871e AM |
10323 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10324 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10325 | ||
10326 | return p; | |
10327 | } | |
10328 | ||
176a0d42 AM |
10329 | static Elf_Internal_Rela * |
10330 | get_relocs (asection *sec, int count) | |
10331 | { | |
10332 | Elf_Internal_Rela *relocs; | |
10333 | struct bfd_elf_section_data *elfsec_data; | |
10334 | ||
10335 | elfsec_data = elf_section_data (sec); | |
10336 | relocs = elfsec_data->relocs; | |
10337 | if (relocs == NULL) | |
10338 | { | |
10339 | bfd_size_type relsize; | |
10340 | relsize = sec->reloc_count * sizeof (*relocs); | |
10341 | relocs = bfd_alloc (sec->owner, relsize); | |
10342 | if (relocs == NULL) | |
10343 | return NULL; | |
10344 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10345 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10346 | sizeof (Elf_Internal_Shdr)); | |
10347 | if (elfsec_data->rela.hdr == NULL) | |
10348 | return NULL; | |
10349 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10350 | * sizeof (Elf64_External_Rela)); | |
10351 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10352 | sec->reloc_count = 0; |
10353 | } | |
10354 | relocs += sec->reloc_count; | |
10355 | sec->reloc_count += count; | |
10356 | return relocs; | |
10357 | } | |
10358 | ||
aa374f67 | 10359 | static bfd_vma |
25f53a85 | 10360 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10361 | struct ppc_stub_hash_entry *stub_entry) |
10362 | { | |
25f53a85 | 10363 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
10364 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
10365 | ||
10366 | if (r2off == 0) | |
10367 | { | |
10368 | /* Support linking -R objects. Get the toc pointer from the | |
10369 | opd entry. */ | |
10370 | char buf[8]; | |
b9e5796b AM |
10371 | if (!htab->opd_abi) |
10372 | return r2off; | |
aa374f67 AM |
10373 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10374 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10375 | ||
10376 | if (strcmp (opd->name, ".opd") != 0 | |
10377 | || opd->reloc_count != 0) | |
10378 | { | |
bc30df16 | 10379 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10380 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
10381 | bfd_set_error (bfd_error_bad_value); |
10382 | return 0; | |
10383 | } | |
10384 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
10385 | return 0; | |
10386 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 10387 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
10388 | } |
10389 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
10390 | return r2off; | |
10391 | } | |
10392 | ||
b34976b6 | 10393 | static bfd_boolean |
4ce794b7 | 10394 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10395 | { |
721956f4 AM |
10396 | struct ppc_stub_hash_entry *stub_entry; |
10397 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10398 | struct bfd_link_info *info; |
10399 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10400 | bfd_byte *loc; |
10401 | bfd_byte *p; | |
ee75fd95 | 10402 | bfd_vma dest, off; |
721956f4 | 10403 | int size; |
176a0d42 | 10404 | Elf_Internal_Rela *r; |
e054468f | 10405 | asection *plt; |
5d1634d7 | 10406 | |
721956f4 AM |
10407 | /* Massage our args to the form they really have. */ |
10408 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10409 | info = in_arg; |
5d1634d7 | 10410 | |
5d1634d7 | 10411 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10412 | if (htab == NULL) |
10413 | return FALSE; | |
5d1634d7 | 10414 | |
721956f4 | 10415 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10416 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10417 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10418 | |
4ce794b7 | 10419 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10420 | switch (stub_entry->stub_type) |
5d1634d7 | 10421 | { |
721956f4 | 10422 | case ppc_stub_long_branch: |
ad8e1ba5 | 10423 | case ppc_stub_long_branch_r2off: |
721956f4 | 10424 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10425 | dest = (stub_entry->target_value |
10426 | + stub_entry->target_section->output_offset | |
10427 | + stub_entry->target_section->output_section->vma); | |
10428 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10429 | off = dest; | |
5d1634d7 | 10430 | |
721956f4 AM |
10431 | /* And this is where we are coming from. */ |
10432 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10433 | + stub_entry->stub_sec->output_offset |
10434 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10435 | |
ac2df442 AM |
10436 | size = 4; |
10437 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10438 | { |
25f53a85 | 10439 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10440 | |
aa374f67 AM |
10441 | if (r2off == 0) |
10442 | { | |
10443 | htab->stub_error = TRUE; | |
10444 | return FALSE; | |
10445 | } | |
a078d95a | 10446 | bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10447 | loc += 4; |
ac2df442 AM |
10448 | size = 12; |
10449 | if (PPC_HA (r2off) != 0) | |
10450 | { | |
10451 | size = 16; | |
10452 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10453 | loc += 4; | |
10454 | } | |
97b639ba | 10455 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10456 | loc += 4; |
ac2df442 | 10457 | off -= size - 4; |
ad8e1ba5 | 10458 | } |
97b639ba | 10459 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10460 | |
5c3dead3 AM |
10461 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10462 | { | |
bc30df16 AM |
10463 | info->callbacks->einfo |
10464 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10465 | stub_entry->root.string); | |
5c3dead3 AM |
10466 | htab->stub_error = TRUE; |
10467 | return FALSE; | |
10468 | } | |
ee75fd95 AM |
10469 | |
10470 | if (info->emitrelocations) | |
10471 | { | |
176a0d42 AM |
10472 | r = get_relocs (stub_entry->stub_sec, 1); |
10473 | if (r == NULL) | |
10474 | return FALSE; | |
ee75fd95 AM |
10475 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10476 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10477 | r->r_addend = dest; | |
10478 | if (stub_entry->h != NULL) | |
10479 | { | |
10480 | struct elf_link_hash_entry **hashes; | |
10481 | unsigned long symndx; | |
10482 | struct ppc_link_hash_entry *h; | |
10483 | ||
10484 | hashes = elf_sym_hashes (htab->stub_bfd); | |
10485 | if (hashes == NULL) | |
10486 | { | |
10487 | bfd_size_type hsize; | |
10488 | ||
10489 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10490 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
10491 | if (hashes == NULL) | |
10492 | return FALSE; | |
10493 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
10494 | htab->stub_globals = 1; | |
10495 | } | |
10496 | symndx = htab->stub_globals++; | |
10497 | h = stub_entry->h; | |
10498 | hashes[symndx] = &h->elf; | |
10499 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10500 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10501 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10502 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10503 | /* H is an opd symbol. The addend must be zero. */ | |
10504 | r->r_addend = 0; | |
10505 | else | |
10506 | { | |
10507 | off = (h->elf.root.u.def.value | |
10508 | + h->elf.root.u.def.section->output_offset | |
10509 | + h->elf.root.u.def.section->output_section->vma); | |
10510 | r->r_addend -= off; | |
10511 | } | |
10512 | } | |
10513 | } | |
721956f4 | 10514 | break; |
e86ce104 | 10515 | |
721956f4 | 10516 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10517 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10518 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10519 | stub_entry->root.string + 9, | |
b34976b6 | 10520 | FALSE, FALSE); |
721956f4 AM |
10521 | if (br_entry == NULL) |
10522 | { | |
8de848d8 | 10523 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10524 | stub_entry->root.string); |
b34976b6 AM |
10525 | htab->stub_error = TRUE; |
10526 | return FALSE; | |
721956f4 AM |
10527 | } |
10528 | ||
176a0d42 AM |
10529 | dest = (stub_entry->target_value |
10530 | + stub_entry->target_section->output_offset | |
10531 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10532 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10533 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10534 | |
176a0d42 | 10535 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10536 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10537 | |
f94498ff | 10538 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10539 | { |
f94498ff | 10540 | br_entry->iter = 0; |
84f5d08e | 10541 | |
f94498ff | 10542 | if (htab->relbrlt != NULL) |
84f5d08e | 10543 | { |
f94498ff AM |
10544 | /* Create a reloc for the branch lookup table entry. */ |
10545 | Elf_Internal_Rela rela; | |
10546 | bfd_byte *rl; | |
10547 | ||
10548 | rela.r_offset = (br_entry->offset | |
10549 | + htab->brlt->output_offset | |
10550 | + htab->brlt->output_section->vma); | |
10551 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10552 | rela.r_addend = dest; |
f94498ff AM |
10553 | |
10554 | rl = htab->relbrlt->contents; | |
10555 | rl += (htab->relbrlt->reloc_count++ | |
10556 | * sizeof (Elf64_External_Rela)); | |
10557 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10558 | } | |
10559 | else if (info->emitrelocations) | |
10560 | { | |
176a0d42 AM |
10561 | r = get_relocs (htab->brlt, 1); |
10562 | if (r == NULL) | |
10563 | return FALSE; | |
10564 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10565 | normal reloc processing. Symbols and offsets are not | |
10566 | translated from input file to output file form, so | |
10567 | set up the offset per the output file. */ | |
f94498ff AM |
10568 | r->r_offset = (br_entry->offset |
10569 | + htab->brlt->output_offset | |
10570 | + htab->brlt->output_section->vma); | |
10571 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10572 | r->r_addend = dest; |
84f5d08e | 10573 | } |
84f5d08e | 10574 | } |
721956f4 | 10575 | |
176a0d42 AM |
10576 | dest = (br_entry->offset |
10577 | + htab->brlt->output_offset | |
10578 | + htab->brlt->output_section->vma); | |
10579 | ||
10580 | off = (dest | |
4ce794b7 | 10581 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10582 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10583 | |
ad8e1ba5 | 10584 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10585 | { |
25f53a85 | 10586 | info->callbacks->einfo |
bc30df16 | 10587 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10588 | stub_entry->root.string); |
5d1634d7 | 10589 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10590 | htab->stub_error = TRUE; |
10591 | return FALSE; | |
5d1634d7 | 10592 | } |
41bd81ab | 10593 | |
176a0d42 AM |
10594 | if (info->emitrelocations) |
10595 | { | |
10596 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10597 | if (r == NULL) | |
10598 | return FALSE; | |
10599 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10600 | if (bfd_big_endian (info->output_bfd)) |
10601 | r[0].r_offset += 2; | |
b9e5796b AM |
10602 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off |
10603 | && htab->opd_abi) | |
176a0d42 AM |
10604 | r[0].r_offset += 4; |
10605 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10606 | r[0].r_addend = dest; | |
10607 | if (PPC_HA (off) != 0) | |
10608 | { | |
10609 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10610 | r[1].r_offset = r[0].r_offset + 4; | |
10611 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10612 | r[1].r_addend = r[0].r_addend; | |
10613 | } | |
10614 | } | |
10615 | ||
b9e5796b AM |
10616 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off |
10617 | || !htab->opd_abi) | |
ad8e1ba5 | 10618 | { |
176a0d42 | 10619 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10620 | { |
10621 | size = 16; | |
71a39c98 | 10622 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
ac2df442 | 10623 | loc += 4; |
71a39c98 | 10624 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
ac2df442 AM |
10625 | } |
10626 | else | |
10627 | { | |
10628 | size = 12; | |
71a39c98 | 10629 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 | 10630 | } |
ad8e1ba5 AM |
10631 | } |
10632 | else | |
10633 | { | |
25f53a85 | 10634 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10635 | |
10636 | if (r2off == 0) | |
10637 | { | |
10638 | htab->stub_error = TRUE; | |
10639 | return FALSE; | |
10640 | } | |
ad8e1ba5 | 10641 | |
a078d95a | 10642 | bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10643 | loc += 4; |
ac2df442 | 10644 | size = 20; |
176a0d42 | 10645 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10646 | { |
10647 | size += 4; | |
71a39c98 | 10648 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
ac2df442 | 10649 | loc += 4; |
71a39c98 | 10650 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
ac2df442 AM |
10651 | loc += 4; |
10652 | } | |
10653 | else | |
10654 | { | |
71a39c98 | 10655 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10656 | loc += 4; |
10657 | } | |
10658 | ||
10659 | if (PPC_HA (r2off) != 0) | |
10660 | { | |
10661 | size += 4; | |
10662 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
10663 | loc += 4; | |
10664 | } | |
97b639ba | 10665 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
10666 | } |
10667 | loc += 4; | |
71a39c98 | 10668 | bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10669 | loc += 4; |
97b639ba | 10670 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 10671 | break; |
5d1634d7 | 10672 | |
721956f4 | 10673 | case ppc_stub_plt_call: |
794e51c0 | 10674 | case ppc_stub_plt_call_r2save: |
e054468f | 10675 | if (stub_entry->h != NULL |
b31867b6 AM |
10676 | && stub_entry->h->is_func_descriptor |
10677 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10678 | { |
b31867b6 AM |
10679 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10680 | ||
10681 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10682 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10683 | FIXME: We used to define the symbol on one of the call | |
10684 | stubs instead, which is why we test symbol section id | |
10685 | against htab->top_id in various places. Likely all | |
10686 | these checks could now disappear. */ | |
10687 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10688 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10689 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10690 | fh->was_undefined = 0; | |
c862ae31 AM |
10691 | } |
10692 | ||
721956f4 | 10693 | /* Now build the stub. */ |
e054468f | 10694 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10695 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10696 | abort (); |
10697 | ||
33e44f2e | 10698 | plt = htab->elf.splt; |
25f23106 AM |
10699 | if (!htab->elf.dynamic_sections_created |
10700 | || stub_entry->h == NULL | |
10701 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10702 | plt = htab->elf.iplt; |
e054468f AM |
10703 | |
10704 | dest += plt->output_offset + plt->output_section->vma; | |
10705 | ||
10706 | if (stub_entry->h == NULL | |
10707 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10708 | { | |
10709 | Elf_Internal_Rela rela; | |
10710 | bfd_byte *rl; | |
10711 | ||
10712 | rela.r_offset = dest; | |
ee67d69a AM |
10713 | if (htab->opd_abi) |
10714 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10715 | else | |
10716 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10717 | rela.r_addend = (stub_entry->target_value |
10718 | + stub_entry->target_section->output_offset | |
10719 | + stub_entry->target_section->output_section->vma); | |
10720 | ||
33e44f2e AM |
10721 | rl = (htab->elf.irelplt->contents |
10722 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10723 | * sizeof (Elf64_External_Rela))); |
10724 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10725 | stub_entry->plt_ent->plt.offset |= 1; |
10726 | } | |
176a0d42 AM |
10727 | |
10728 | off = (dest | |
e054468f | 10729 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10730 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10731 | |
ad8e1ba5 | 10732 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10733 | { |
25f53a85 | 10734 | info->callbacks->einfo |
bc30df16 | 10735 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10736 | stub_entry->h != NULL |
10737 | ? stub_entry->h->elf.root.root.string | |
10738 | : "<local sym>"); | |
721956f4 | 10739 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10740 | htab->stub_error = TRUE; |
10741 | return FALSE; | |
721956f4 AM |
10742 | } |
10743 | ||
794e51c0 AM |
10744 | if (htab->plt_stub_align != 0) |
10745 | { | |
10746 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10747 | ||
10748 | stub_entry->stub_sec->size += pad; | |
10749 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10750 | loc += pad; | |
10751 | } | |
10752 | ||
176a0d42 AM |
10753 | r = NULL; |
10754 | if (info->emitrelocations) | |
10755 | { | |
10756 | r = get_relocs (stub_entry->stub_sec, | |
c7131b65 AM |
10757 | (2 |
10758 | + (PPC_HA (off) != 0) | |
10759 | + (htab->plt_static_chain | |
10760 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
176a0d42 AM |
10761 | if (r == NULL) |
10762 | return FALSE; | |
10763 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10764 | if (bfd_big_endian (info->output_bfd)) |
10765 | r[0].r_offset += 2; | |
176a0d42 AM |
10766 | r[0].r_addend = dest; |
10767 | } | |
a7f2871e AM |
10768 | if (stub_entry->h != NULL |
10769 | && (stub_entry->h == htab->tls_get_addr_fd | |
10770 | || stub_entry->h == htab->tls_get_addr) | |
10771 | && !htab->no_tls_get_addr_opt) | |
794e51c0 | 10772 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10773 | else |
794e51c0 | 10774 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10775 | size = p - loc; |
10776 | break; | |
10777 | ||
10778 | default: | |
10779 | BFD_FAIL (); | |
b34976b6 | 10780 | return FALSE; |
721956f4 AM |
10781 | } |
10782 | ||
eea6121a | 10783 | stub_entry->stub_sec->size += size; |
97b639ba | 10784 | |
ee75fd95 | 10785 | if (htab->emit_stub_syms) |
97b639ba AM |
10786 | { |
10787 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10788 | size_t len1, len2; |
10789 | char *name; | |
10790 | const char *const stub_str[] = { "long_branch", | |
10791 | "long_branch_r2off", | |
10792 | "plt_branch", | |
10793 | "plt_branch_r2off", | |
794e51c0 | 10794 | "plt_call", |
ee75fd95 AM |
10795 | "plt_call" }; |
10796 | ||
10797 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10798 | len2 = strlen (stub_entry->root.string); | |
10799 | name = bfd_malloc (len1 + len2 + 2); | |
10800 | if (name == NULL) | |
10801 | return FALSE; | |
10802 | memcpy (name, stub_entry->root.string, 9); | |
10803 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10804 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10805 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10806 | if (h == NULL) |
10807 | return FALSE; | |
10808 | if (h->root.type == bfd_link_hash_new) | |
10809 | { | |
10810 | h->root.type = bfd_link_hash_defined; | |
10811 | h->root.u.def.section = stub_entry->stub_sec; | |
10812 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10813 | h->ref_regular = 1; |
10814 | h->def_regular = 1; | |
10815 | h->ref_regular_nonweak = 1; | |
10816 | h->forced_local = 1; | |
10817 | h->non_elf = 0; | |
97b639ba AM |
10818 | } |
10819 | } | |
10820 | ||
b34976b6 | 10821 | return TRUE; |
721956f4 AM |
10822 | } |
10823 | ||
10824 | /* As above, but don't actually build the stub. Just bump offset so | |
10825 | we know stub section sizes, and select plt_branch stubs where | |
10826 | long_branch stubs won't do. */ | |
10827 | ||
b34976b6 | 10828 | static bfd_boolean |
4ce794b7 | 10829 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10830 | { |
10831 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10832 | struct bfd_link_info *info; |
721956f4 AM |
10833 | struct ppc_link_hash_table *htab; |
10834 | bfd_vma off; | |
10835 | int size; | |
10836 | ||
10837 | /* Massage our args to the form they really have. */ | |
10838 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10839 | info = in_arg; |
10840 | ||
10841 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10842 | if (htab == NULL) |
10843 | return FALSE; | |
721956f4 | 10844 | |
794e51c0 AM |
10845 | if (stub_entry->stub_type == ppc_stub_plt_call |
10846 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10847 | { |
e054468f AM |
10848 | asection *plt; |
10849 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10850 | if (off >= (bfd_vma) -2) |
411e1bfb | 10851 | abort (); |
33e44f2e | 10852 | plt = htab->elf.splt; |
25f23106 AM |
10853 | if (!htab->elf.dynamic_sections_created |
10854 | || stub_entry->h == NULL | |
10855 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10856 | plt = htab->elf.iplt; |
e054468f AM |
10857 | off += (plt->output_offset |
10858 | + plt->output_section->vma | |
10859 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10860 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10861 | |
794e51c0 AM |
10862 | size = plt_stub_size (htab, stub_entry, off); |
10863 | if (htab->plt_stub_align) | |
10864 | size += plt_stub_pad (htab, stub_entry, off); | |
176a0d42 AM |
10865 | if (info->emitrelocations) |
10866 | { | |
10867 | stub_entry->stub_sec->reloc_count | |
b9e5796b AM |
10868 | += ((PPC_HA (off) != 0) |
10869 | + (htab->opd_abi | |
10870 | ? 2 + (htab->plt_static_chain | |
10871 | && PPC_HA (off + 16) == PPC_HA (off)) | |
10872 | : 1)); | |
176a0d42 AM |
10873 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10874 | } | |
721956f4 AM |
10875 | } |
10876 | else | |
10877 | { | |
ad8e1ba5 AM |
10878 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10879 | variants. */ | |
ac2df442 | 10880 | bfd_vma r2off = 0; |
6911b7dc | 10881 | bfd_vma local_off = 0; |
ac2df442 | 10882 | |
721956f4 AM |
10883 | off = (stub_entry->target_value |
10884 | + stub_entry->target_section->output_offset | |
10885 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10886 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10887 | + stub_entry->stub_sec->output_offset |
10888 | + stub_entry->stub_sec->output_section->vma); | |
10889 | ||
ad8e1ba5 AM |
10890 | /* Reset the stub type from the plt variant in case we now |
10891 | can reach with a shorter stub. */ | |
10892 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10893 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10894 | ||
10895 | size = 4; | |
10896 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10897 | { | |
25f53a85 | 10898 | r2off = get_r2off (info, stub_entry); |
b9e5796b | 10899 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10900 | { |
10901 | htab->stub_error = TRUE; | |
10902 | return FALSE; | |
10903 | } | |
ac2df442 AM |
10904 | size = 12; |
10905 | if (PPC_HA (r2off) != 0) | |
10906 | size = 16; | |
10907 | off -= size - 4; | |
ad8e1ba5 AM |
10908 | } |
10909 | ||
6911b7dc AM |
10910 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
10911 | ||
b9e5796b AM |
10912 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
10913 | Do the same for -R objects without function descriptors. */ | |
10914 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
10915 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
10916 | && r2off == 0)) | |
721956f4 AM |
10917 | { |
10918 | struct ppc_branch_hash_entry *br_entry; | |
10919 | ||
10920 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10921 | stub_entry->root.string + 9, | |
b34976b6 | 10922 | TRUE, FALSE); |
721956f4 AM |
10923 | if (br_entry == NULL) |
10924 | { | |
8de848d8 | 10925 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10926 | stub_entry->root.string); |
b34976b6 AM |
10927 | htab->stub_error = TRUE; |
10928 | return FALSE; | |
721956f4 AM |
10929 | } |
10930 | ||
10931 | if (br_entry->iter != htab->stub_iteration) | |
10932 | { | |
10933 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10934 | br_entry->offset = htab->brlt->size; |
10935 | htab->brlt->size += 8; | |
63bc6f6c | 10936 | |
ee75fd95 | 10937 | if (htab->relbrlt != NULL) |
eea6121a | 10938 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10939 | else if (info->emitrelocations) |
10940 | { | |
10941 | htab->brlt->reloc_count += 1; | |
10942 | htab->brlt->flags |= SEC_RELOC; | |
10943 | } | |
721956f4 | 10944 | } |
ad8e1ba5 AM |
10945 | |
10946 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10947 | off = (br_entry->offset |
10948 | + htab->brlt->output_offset | |
10949 | + htab->brlt->output_section->vma | |
10950 | - elf_gp (htab->brlt->output_section->owner) | |
10951 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10952 | ||
176a0d42 AM |
10953 | if (info->emitrelocations) |
10954 | { | |
10955 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10956 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10957 | } | |
10958 | ||
b9e5796b AM |
10959 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off |
10960 | || !htab->opd_abi) | |
ac2df442 AM |
10961 | { |
10962 | size = 12; | |
176a0d42 | 10963 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10964 | size = 16; |
10965 | } | |
10966 | else | |
10967 | { | |
10968 | size = 20; | |
176a0d42 | 10969 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10970 | size += 4; |
10971 | ||
10972 | if (PPC_HA (r2off) != 0) | |
10973 | size += 4; | |
10974 | } | |
721956f4 | 10975 | } |
84f5d08e AM |
10976 | else if (info->emitrelocations) |
10977 | { | |
10978 | stub_entry->stub_sec->reloc_count += 1; | |
10979 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10980 | } | |
721956f4 AM |
10981 | } |
10982 | ||
eea6121a | 10983 | stub_entry->stub_sec->size += size; |
b34976b6 | 10984 | return TRUE; |
721956f4 AM |
10985 | } |
10986 | ||
10987 | /* Set up various things so that we can make a list of input sections | |
10988 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10989 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10990 | |
10991 | int | |
927be08e AM |
10992 | ppc64_elf_setup_section_lists |
10993 | (struct bfd_link_info *info, | |
10994 | asection *(*add_stub_section) (const char *, asection *), | |
10995 | void (*layout_sections_again) (void)) | |
721956f4 AM |
10996 | { |
10997 | bfd *input_bfd; | |
734b6cf9 | 10998 | int top_id, top_index, id; |
721956f4 | 10999 | asection *section; |
734b6cf9 | 11000 | asection **input_list; |
721956f4 AM |
11001 | bfd_size_type amt; |
11002 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11003 | ||
4dfe6ac6 NC |
11004 | if (htab == NULL) |
11005 | return -1; | |
927be08e AM |
11006 | /* Stash our params away. */ |
11007 | htab->add_stub_section = add_stub_section; | |
11008 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 11009 | |
1e2f5b6e | 11010 | /* Find the top input section id. */ |
3d6f9012 | 11011 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
11012 | input_bfd != NULL; |
11013 | input_bfd = input_bfd->link_next) | |
11014 | { | |
721956f4 AM |
11015 | for (section = input_bfd->sections; |
11016 | section != NULL; | |
11017 | section = section->next) | |
11018 | { | |
11019 | if (top_id < section->id) | |
11020 | top_id = section->id; | |
11021 | } | |
11022 | } | |
721956f4 | 11023 | |
8f3bab57 | 11024 | htab->top_id = top_id; |
721956f4 | 11025 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 11026 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
11027 | if (htab->stub_group == NULL) |
11028 | return -1; | |
11029 | ||
3d6f9012 AM |
11030 | /* Set toc_off for com, und, abs and ind sections. */ |
11031 | for (id = 0; id < 3; id++) | |
11032 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 11033 | |
734b6cf9 AM |
11034 | /* We can't use output_bfd->section_count here to find the top output |
11035 | section index as some sections may have been removed, and | |
8423293d | 11036 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 11037 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
11038 | section != NULL; |
11039 | section = section->next) | |
11040 | { | |
11041 | if (top_index < section->index) | |
11042 | top_index = section->index; | |
11043 | } | |
11044 | ||
11045 | htab->top_index = top_index; | |
11046 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 11047 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
11048 | htab->input_list = input_list; |
11049 | if (input_list == NULL) | |
11050 | return -1; | |
11051 | ||
721956f4 AM |
11052 | return 1; |
11053 | } | |
11054 | ||
927be08e AM |
11055 | /* Set up for first pass at multitoc partitioning. */ |
11056 | ||
11057 | void | |
11058 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11059 | { | |
11060 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11061 | ||
1c865ab2 | 11062 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11063 | htab->toc_bfd = NULL; |
11064 | htab->toc_first_sec = NULL; | |
11065 | } | |
11066 | ||
e717da7e AM |
11067 | /* The linker repeatedly calls this function for each TOC input section |
11068 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11069 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11070 | |
927be08e | 11071 | bfd_boolean |
4ce794b7 | 11072 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11073 | { |
11074 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11075 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11076 | |
4dfe6ac6 NC |
11077 | if (htab == NULL) |
11078 | return FALSE; | |
11079 | ||
927be08e | 11080 | if (!htab->second_toc_pass) |
4c52953f | 11081 | { |
927be08e | 11082 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11083 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11084 | ||
11085 | if (new_bfd) | |
bf102f86 AM |
11086 | { |
11087 | htab->toc_bfd = isec->owner; | |
11088 | htab->toc_first_sec = isec; | |
11089 | } | |
927be08e | 11090 | |
bf102f86 AM |
11091 | addr = isec->output_offset + isec->output_section->vma; |
11092 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11093 | limit = 0x80008000; |
11094 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11095 | limit = 0x10000; | |
11096 | if (off + isec->size > limit) | |
bf102f86 AM |
11097 | { |
11098 | addr = (htab->toc_first_sec->output_offset | |
11099 | + htab->toc_first_sec->output_section->vma); | |
11100 | htab->toc_curr = addr; | |
11101 | } | |
99877b66 | 11102 | |
927be08e AM |
11103 | /* toc_curr is the base address of this toc group. Set elf_gp |
11104 | for the input section to be the offset relative to the | |
11105 | output toc base plus 0x8000. Making the input elf_gp an | |
11106 | offset allows us to move the toc as a whole without | |
11107 | recalculating input elf_gp. */ | |
11108 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11109 | off += TOC_BASE_OFF; | |
11110 | ||
11111 | /* Die if someone uses a linker script that doesn't keep input | |
11112 | file .toc and .got together. */ | |
a4fd3de5 AM |
11113 | if (new_bfd |
11114 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11115 | && elf_gp (isec->owner) != off) |
11116 | return FALSE; | |
11117 | ||
11118 | elf_gp (isec->owner) = off; | |
11119 | return TRUE; | |
4c52953f | 11120 | } |
927be08e AM |
11121 | |
11122 | /* During the second pass toc_first_sec points to the start of | |
11123 | a toc group, and toc_curr is used to track the old elf_gp. | |
11124 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11125 | if (htab->toc_bfd == isec->owner) | |
11126 | return TRUE; | |
11127 | htab->toc_bfd = isec->owner; | |
11128 | ||
11129 | if (htab->toc_first_sec == NULL | |
11130 | || htab->toc_curr != elf_gp (isec->owner)) | |
11131 | { | |
11132 | htab->toc_curr = elf_gp (isec->owner); | |
11133 | htab->toc_first_sec = isec; | |
11134 | } | |
11135 | addr = (htab->toc_first_sec->output_offset | |
11136 | + htab->toc_first_sec->output_section->vma); | |
11137 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11138 | elf_gp (isec->owner) = off; | |
11139 | ||
11140 | return TRUE; | |
ad8e1ba5 AM |
11141 | } |
11142 | ||
927be08e AM |
11143 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11144 | symbol H. */ | |
11145 | ||
11146 | static bfd_boolean | |
11147 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11148 | { | |
11149 | if (h->root.type == bfd_link_hash_indirect) | |
11150 | return TRUE; | |
11151 | ||
927be08e AM |
11152 | merge_got_entries (&h->got.glist); |
11153 | ||
11154 | return TRUE; | |
11155 | } | |
11156 | ||
11157 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11158 | symbol H. */ | |
11159 | ||
11160 | static bfd_boolean | |
11161 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11162 | { | |
11163 | struct got_entry *gent; | |
11164 | ||
11165 | if (h->root.type == bfd_link_hash_indirect) | |
11166 | return TRUE; | |
11167 | ||
927be08e AM |
11168 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11169 | if (!gent->is_indirect) | |
11170 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11171 | return TRUE; | |
11172 | } | |
11173 | ||
11174 | /* Called on the first multitoc pass after the last call to | |
11175 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11176 | entries. */ | |
11177 | ||
11178 | bfd_boolean | |
11179 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11180 | { |
11181 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11182 | struct bfd *ibfd, *ibfd2; |
11183 | bfd_boolean done_something; | |
11184 | ||
11185 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11186 | |
7865406b AM |
11187 | if (!htab->do_multi_toc) |
11188 | return FALSE; | |
11189 | ||
d0fae19d | 11190 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11191 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11192 | ||
11193 | /* And tlsld_got. */ | |
11194 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11195 | { | |
11196 | struct got_entry *ent, *ent2; | |
11197 | ||
11198 | if (!is_ppc64_elf (ibfd)) | |
11199 | continue; | |
11200 | ||
11201 | ent = ppc64_tlsld_got (ibfd); | |
11202 | if (!ent->is_indirect | |
11203 | && ent->got.offset != (bfd_vma) -1) | |
11204 | { | |
11205 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
11206 | { | |
11207 | if (!is_ppc64_elf (ibfd2)) | |
11208 | continue; | |
11209 | ||
11210 | ent2 = ppc64_tlsld_got (ibfd2); | |
11211 | if (!ent2->is_indirect | |
11212 | && ent2->got.offset != (bfd_vma) -1 | |
11213 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11214 | { | |
11215 | ent2->is_indirect = TRUE; | |
11216 | ent2->got.ent = ent; | |
11217 | } | |
11218 | } | |
11219 | } | |
11220 | } | |
11221 | ||
11222 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11223 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11224 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11225 | htab->got_reli_size = 0; |
11226 | ||
11227 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11228 | { | |
11229 | asection *got, *relgot; | |
11230 | ||
11231 | if (!is_ppc64_elf (ibfd)) | |
11232 | continue; | |
11233 | ||
11234 | got = ppc64_elf_tdata (ibfd)->got; | |
11235 | if (got != NULL) | |
11236 | { | |
11237 | got->rawsize = got->size; | |
11238 | got->size = 0; | |
11239 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11240 | relgot->rawsize = relgot->size; | |
11241 | relgot->size = 0; | |
11242 | } | |
11243 | } | |
11244 | ||
11245 | /* Now reallocate the got, local syms first. We don't need to | |
11246 | allocate section contents again since we never increase size. */ | |
11247 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11248 | { | |
11249 | struct got_entry **lgot_ents; | |
11250 | struct got_entry **end_lgot_ents; | |
11251 | struct plt_entry **local_plt; | |
11252 | struct plt_entry **end_local_plt; | |
f961d9dd | 11253 | unsigned char *lgot_masks; |
927be08e AM |
11254 | bfd_size_type locsymcount; |
11255 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11256 | asection *s; |
927be08e AM |
11257 | |
11258 | if (!is_ppc64_elf (ibfd)) | |
11259 | continue; | |
11260 | ||
11261 | lgot_ents = elf_local_got_ents (ibfd); | |
11262 | if (!lgot_ents) | |
11263 | continue; | |
11264 | ||
11265 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11266 | locsymcount = symtab_hdr->sh_info; | |
11267 | end_lgot_ents = lgot_ents + locsymcount; | |
11268 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11269 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11270 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11271 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11272 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11273 | { | |
11274 | struct got_entry *ent; | |
11275 | ||
11276 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11277 | { |
19e08130 AM |
11278 | unsigned int ent_size = 8; |
11279 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11280 | ||
d0fae19d AM |
11281 | ent->got.offset = s->size; |
11282 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11283 | { |
19e08130 AM |
11284 | ent_size *= 2; |
11285 | rel_size *= 2; | |
11286 | } | |
11287 | s->size += ent_size; | |
11288 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11289 | { | |
33e44f2e | 11290 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11291 | htab->got_reli_size += rel_size; |
11292 | } | |
11293 | else if (info->shared) | |
11294 | { | |
11295 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11296 | srel->size += rel_size; | |
d0fae19d AM |
11297 | } |
11298 | } | |
927be08e AM |
11299 | } |
11300 | } | |
11301 | ||
11302 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11303 | ||
11304 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11305 | { | |
11306 | struct got_entry *ent; | |
11307 | ||
11308 | if (!is_ppc64_elf (ibfd)) | |
11309 | continue; | |
11310 | ||
11311 | ent = ppc64_tlsld_got (ibfd); | |
11312 | if (!ent->is_indirect | |
11313 | && ent->got.offset != (bfd_vma) -1) | |
11314 | { | |
11315 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11316 | ent->got.offset = s->size; | |
11317 | s->size += 16; | |
11318 | if (info->shared) | |
11319 | { | |
11320 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11321 | srel->size += sizeof (Elf64_External_Rela); | |
11322 | } | |
11323 | } | |
11324 | } | |
11325 | ||
33e44f2e | 11326 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e AM |
11327 | if (!done_something) |
11328 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11329 | { | |
11330 | asection *got; | |
11331 | ||
11332 | if (!is_ppc64_elf (ibfd)) | |
11333 | continue; | |
11334 | ||
11335 | got = ppc64_elf_tdata (ibfd)->got; | |
11336 | if (got != NULL) | |
11337 | { | |
11338 | done_something = got->rawsize != got->size; | |
11339 | if (done_something) | |
11340 | break; | |
11341 | } | |
11342 | } | |
11343 | ||
11344 | if (done_something) | |
11345 | (*htab->layout_sections_again) (); | |
11346 | ||
11347 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11348 | on input sections. */ | |
11349 | htab->toc_bfd = NULL; | |
11350 | htab->toc_first_sec = NULL; | |
11351 | htab->second_toc_pass = TRUE; | |
11352 | return done_something; | |
11353 | } | |
11354 | ||
11355 | /* Called after second pass of multitoc partitioning. */ | |
11356 | ||
11357 | void | |
11358 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11359 | { | |
11360 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11361 | ||
11362 | /* After the second pass, toc_curr tracks the TOC offset used | |
11363 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11364 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11365 | } |
11366 | ||
9b5ecbd0 AM |
11367 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11368 | calls, then there's no need to use toc adjusting stubs when branching | |
11369 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11370 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11371 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11372 | for a stub was detected. If called from the top level, a return of | |
11373 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11374 | |
11375 | static int | |
4ce794b7 | 11376 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11377 | { |
9b5ecbd0 | 11378 | int ret; |
70cc837d AM |
11379 | |
11380 | /* Mark this section as checked. */ | |
11381 | isec->call_check_done = 1; | |
9b5ecbd0 | 11382 | |
772119ce AM |
11383 | /* We know none of our code bearing sections will need toc stubs. */ |
11384 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11385 | return 0; | |
11386 | ||
eea6121a | 11387 | if (isec->size == 0) |
082c50f8 AM |
11388 | return 0; |
11389 | ||
4c52953f AM |
11390 | if (isec->output_section == NULL) |
11391 | return 0; | |
11392 | ||
4c52953f | 11393 | ret = 0; |
70cc837d | 11394 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11395 | { |
70cc837d AM |
11396 | Elf_Internal_Rela *relstart, *rel; |
11397 | Elf_Internal_Sym *local_syms; | |
11398 | struct ppc_link_hash_table *htab; | |
2917689a | 11399 | |
70cc837d AM |
11400 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11401 | info->keep_memory); | |
11402 | if (relstart == NULL) | |
11403 | return -1; | |
90aecf7a | 11404 | |
70cc837d AM |
11405 | /* Look for branches to outside of this section. */ |
11406 | local_syms = NULL; | |
11407 | htab = ppc_hash_table (info); | |
11408 | if (htab == NULL) | |
11409 | return -1; | |
4c52953f | 11410 | |
70cc837d | 11411 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11412 | { |
70cc837d AM |
11413 | enum elf_ppc64_reloc_type r_type; |
11414 | unsigned long r_symndx; | |
11415 | struct elf_link_hash_entry *h; | |
11416 | struct ppc_link_hash_entry *eh; | |
11417 | Elf_Internal_Sym *sym; | |
11418 | asection *sym_sec; | |
11419 | struct _opd_sec_data *opd; | |
11420 | bfd_vma sym_value; | |
11421 | bfd_vma dest; | |
11422 | ||
11423 | r_type = ELF64_R_TYPE (rel->r_info); | |
11424 | if (r_type != R_PPC64_REL24 | |
11425 | && r_type != R_PPC64_REL14 | |
11426 | && r_type != R_PPC64_REL14_BRTAKEN | |
11427 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11428 | continue; | |
4c52953f | 11429 | |
70cc837d AM |
11430 | r_symndx = ELF64_R_SYM (rel->r_info); |
11431 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11432 | isec->owner)) | |
4c52953f | 11433 | { |
70cc837d AM |
11434 | ret = -1; |
11435 | break; | |
11436 | } | |
4c52953f | 11437 | |
70cc837d AM |
11438 | /* Calls to dynamic lib functions go through a plt call stub |
11439 | that uses r2. */ | |
11440 | eh = (struct ppc_link_hash_entry *) h; | |
11441 | if (eh != NULL | |
11442 | && (eh->elf.plt.plist != NULL | |
11443 | || (eh->oh != NULL | |
11444 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11445 | { | |
11446 | ret = 1; | |
11447 | break; | |
4c52953f AM |
11448 | } |
11449 | ||
70cc837d AM |
11450 | if (sym_sec == NULL) |
11451 | /* Ignore other undefined symbols. */ | |
4c52953f | 11452 | continue; |
4c52953f | 11453 | |
70cc837d AM |
11454 | /* Assume branches to other sections not included in the |
11455 | link need stubs too, to cover -R and absolute syms. */ | |
11456 | if (sym_sec->output_section == NULL) | |
11457 | { | |
11458 | ret = 1; | |
11459 | break; | |
11460 | } | |
4c52953f | 11461 | |
70cc837d AM |
11462 | if (h == NULL) |
11463 | sym_value = sym->st_value; | |
11464 | else | |
11465 | { | |
11466 | if (h->root.type != bfd_link_hash_defined | |
11467 | && h->root.type != bfd_link_hash_defweak) | |
11468 | abort (); | |
11469 | sym_value = h->root.u.def.value; | |
11470 | } | |
11471 | sym_value += rel->r_addend; | |
4c52953f | 11472 | |
70cc837d AM |
11473 | /* If this branch reloc uses an opd sym, find the code section. */ |
11474 | opd = get_opd_info (sym_sec); | |
11475 | if (opd != NULL) | |
11476 | { | |
11477 | if (h == NULL && opd->adjust != NULL) | |
11478 | { | |
11479 | long adjust; | |
4c52953f | 11480 | |
70cc837d AM |
11481 | adjust = opd->adjust[sym->st_value / 8]; |
11482 | if (adjust == -1) | |
11483 | /* Assume deleted functions won't ever be called. */ | |
11484 | continue; | |
11485 | sym_value += adjust; | |
11486 | } | |
4c52953f | 11487 | |
aef36ac1 AM |
11488 | dest = opd_entry_value (sym_sec, sym_value, |
11489 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11490 | if (dest == (bfd_vma) -1) |
11491 | continue; | |
11492 | } | |
11493 | else | |
11494 | dest = (sym_value | |
11495 | + sym_sec->output_offset | |
11496 | + sym_sec->output_section->vma); | |
4c52953f | 11497 | |
70cc837d AM |
11498 | /* Ignore branch to self. */ |
11499 | if (sym_sec == isec) | |
11500 | continue; | |
4c52953f | 11501 | |
70cc837d AM |
11502 | /* If the called function uses the toc, we need a stub. */ |
11503 | if (sym_sec->has_toc_reloc | |
11504 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11505 | { |
70cc837d | 11506 | ret = 1; |
4c52953f AM |
11507 | break; |
11508 | } | |
70cc837d AM |
11509 | |
11510 | /* Assume any branch that needs a long branch stub might in fact | |
11511 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11512 | else if (dest - (isec->output_offset | |
11513 | + isec->output_section->vma | |
6911b7dc AM |
11514 | + rel->r_offset) + (1 << 25) |
11515 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11516 | ? h->other | |
11517 | : sym->st_other)) | |
4c52953f | 11518 | { |
70cc837d AM |
11519 | ret = 1; |
11520 | break; | |
11521 | } | |
11522 | ||
11523 | /* If calling back to a section in the process of being | |
11524 | tested, we can't say for sure that no toc adjusting stubs | |
11525 | are needed, so don't return zero. */ | |
11526 | else if (sym_sec->call_check_in_progress) | |
11527 | ret = 2; | |
11528 | ||
11529 | /* Branches to another section that itself doesn't have any TOC | |
11530 | references are OK. Recursively call ourselves to check. */ | |
11531 | else if (!sym_sec->call_check_done) | |
11532 | { | |
11533 | int recur; | |
11534 | ||
11535 | /* Mark current section as indeterminate, so that other | |
11536 | sections that call back to current won't be marked as | |
11537 | known. */ | |
11538 | isec->call_check_in_progress = 1; | |
11539 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11540 | isec->call_check_in_progress = 0; | |
11541 | ||
4c52953f AM |
11542 | if (recur != 0) |
11543 | { | |
70cc837d AM |
11544 | ret = recur; |
11545 | if (recur != 2) | |
11546 | break; | |
4c52953f AM |
11547 | } |
11548 | } | |
4c52953f | 11549 | } |
70cc837d AM |
11550 | |
11551 | if (local_syms != NULL | |
11552 | && (elf_symtab_hdr (isec->owner).contents | |
11553 | != (unsigned char *) local_syms)) | |
11554 | free (local_syms); | |
11555 | if (elf_section_data (isec)->relocs != relstart) | |
11556 | free (relstart); | |
9b5ecbd0 AM |
11557 | } |
11558 | ||
70cc837d AM |
11559 | if ((ret & 1) == 0 |
11560 | && isec->map_head.s != NULL | |
11561 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11562 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11563 | { | |
11564 | if (isec->map_head.s->has_toc_reloc | |
11565 | || isec->map_head.s->makes_toc_func_call) | |
11566 | ret = 1; | |
11567 | else if (!isec->map_head.s->call_check_done) | |
11568 | { | |
11569 | int recur; | |
11570 | isec->call_check_in_progress = 1; | |
11571 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11572 | isec->call_check_in_progress = 0; | |
11573 | if (recur != 0) | |
11574 | ret = recur; | |
11575 | } | |
11576 | } | |
11577 | ||
11578 | if (ret == 1) | |
11579 | isec->makes_toc_func_call = 1; | |
4c52953f | 11580 | |
9b5ecbd0 AM |
11581 | return ret; |
11582 | } | |
11583 | ||
721956f4 AM |
11584 | /* The linker repeatedly calls this function for each input section, |
11585 | in the order that input sections are linked into output sections. | |
11586 | Build lists of input sections to determine groupings between which | |
11587 | we may insert linker stubs. */ | |
11588 | ||
9b5ecbd0 | 11589 | bfd_boolean |
4ce794b7 | 11590 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11591 | { |
11592 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11593 | ||
4dfe6ac6 NC |
11594 | if (htab == NULL) |
11595 | return FALSE; | |
11596 | ||
734b6cf9 AM |
11597 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11598 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11599 | { |
734b6cf9 | 11600 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11601 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11602 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11603 | /* This happens to make the list in reverse order, |
11604 | which is what we want. */ | |
734b6cf9 AM |
11605 | PREV_SEC (isec) = *list; |
11606 | *list = isec; | |
721956f4 | 11607 | } |
ad8e1ba5 | 11608 | |
4c52953f | 11609 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11610 | { |
8b974ba3 AM |
11611 | /* Analyse sections that aren't already flagged as needing a |
11612 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11613 | .fixup contains branches, but only back to the function that | |
11614 | hit an exception. */ | |
11615 | if (!(isec->has_toc_reloc | |
11616 | || (isec->flags & SEC_CODE) == 0 | |
11617 | || strcmp (isec->name, ".fixup") == 0 | |
11618 | || isec->call_check_done)) | |
11619 | { | |
11620 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11621 | return FALSE; |
8b974ba3 AM |
11622 | } |
11623 | /* Make all sections use the TOC assigned for this object file. | |
11624 | This will be wrong for pasted sections; We fix that in | |
11625 | check_pasted_section(). */ | |
11626 | if (elf_gp (isec->owner) != 0) | |
11627 | htab->toc_curr = elf_gp (isec->owner); | |
11628 | } | |
11629 | ||
ad8e1ba5 | 11630 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11631 | return TRUE; |
721956f4 AM |
11632 | } |
11633 | ||
70cc837d AM |
11634 | /* Check that all .init and .fini sections use the same toc, if they |
11635 | have toc relocs. */ | |
11636 | ||
11637 | static bfd_boolean | |
11638 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11639 | { | |
11640 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11641 | ||
11642 | if (o != NULL) | |
11643 | { | |
11644 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11645 | bfd_vma toc_off = 0; | |
11646 | asection *i; | |
11647 | ||
11648 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11649 | if (i->has_toc_reloc) | |
11650 | { | |
11651 | if (toc_off == 0) | |
11652 | toc_off = htab->stub_group[i->id].toc_off; | |
11653 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11654 | return FALSE; | |
11655 | } | |
6683a28d AM |
11656 | |
11657 | if (toc_off == 0) | |
11658 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11659 | if (i->makes_toc_func_call) | |
11660 | { | |
11661 | toc_off = htab->stub_group[i->id].toc_off; | |
11662 | break; | |
11663 | } | |
11664 | ||
70cc837d AM |
11665 | /* Make sure the whole pasted function uses the same toc offset. */ |
11666 | if (toc_off != 0) | |
11667 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11668 | htab->stub_group[i->id].toc_off = toc_off; | |
11669 | } | |
11670 | return TRUE; | |
11671 | } | |
11672 | ||
11673 | bfd_boolean | |
11674 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11675 | { | |
11676 | return (check_pasted_section (info, ".init") | |
11677 | & check_pasted_section (info, ".fini")); | |
11678 | } | |
11679 | ||
721956f4 AM |
11680 | /* See whether we can group stub sections together. Grouping stub |
11681 | sections may result in fewer stubs. More importantly, we need to | |
11682 | put all .init* and .fini* stubs at the beginning of the .init or | |
11683 | .fini output sections respectively, because glibc splits the | |
11684 | _init and _fini functions into multiple parts. Putting a stub in | |
11685 | the middle of a function is not a good idea. */ | |
11686 | ||
11687 | static void | |
4ce794b7 AM |
11688 | group_sections (struct ppc_link_hash_table *htab, |
11689 | bfd_size_type stub_group_size, | |
11690 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11691 | { |
7c8fe5c4 AM |
11692 | asection **list; |
11693 | bfd_size_type stub14_group_size; | |
11694 | bfd_boolean suppress_size_errors; | |
11695 | ||
11696 | suppress_size_errors = FALSE; | |
11697 | stub14_group_size = stub_group_size; | |
11698 | if (stub_group_size == 1) | |
11699 | { | |
11700 | /* Default values. */ | |
11701 | if (stubs_always_before_branch) | |
11702 | { | |
11703 | stub_group_size = 0x1e00000; | |
11704 | stub14_group_size = 0x7800; | |
11705 | } | |
11706 | else | |
11707 | { | |
11708 | stub_group_size = 0x1c00000; | |
11709 | stub14_group_size = 0x7000; | |
11710 | } | |
11711 | suppress_size_errors = TRUE; | |
11712 | } | |
11713 | ||
11714 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11715 | do |
721956f4 | 11716 | { |
734b6cf9 AM |
11717 | asection *tail = *list; |
11718 | while (tail != NULL) | |
721956f4 | 11719 | { |
734b6cf9 AM |
11720 | asection *curr; |
11721 | asection *prev; | |
11722 | bfd_size_type total; | |
11723 | bfd_boolean big_sec; | |
11724 | bfd_vma curr_toc; | |
11725 | ||
11726 | curr = tail; | |
eea6121a | 11727 | total = tail->size; |
6bee8834 AM |
11728 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11729 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11730 | ? stub14_group_size : stub_group_size); |
11731 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11732 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11733 | tail->owner, tail); | |
734b6cf9 AM |
11734 | curr_toc = htab->stub_group[tail->id].toc_off; |
11735 | ||
11736 | while ((prev = PREV_SEC (curr)) != NULL | |
11737 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11738 | < (ppc64_elf_section_data (prev) != NULL |
11739 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11740 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11741 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11742 | curr = prev; |
11743 | ||
11744 | /* OK, the size from the start of CURR to the end is less | |
11745 | than stub_group_size and thus can be handled by one stub | |
11746 | section. (or the tail section is itself larger than | |
11747 | stub_group_size, in which case we may be toast.) We | |
11748 | should really be keeping track of the total size of stubs | |
11749 | added here, as stubs contribute to the final output | |
11750 | section size. That's a little tricky, and this way will | |
11751 | only break if stubs added make the total size more than | |
11752 | 2^25, ie. for the default stub_group_size, if stubs total | |
11753 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11754 | do | |
721956f4 AM |
11755 | { |
11756 | prev = PREV_SEC (tail); | |
734b6cf9 | 11757 | /* Set up this stub group. */ |
721956f4 AM |
11758 | htab->stub_group[tail->id].link_sec = curr; |
11759 | } | |
734b6cf9 AM |
11760 | while (tail != curr && (tail = prev) != NULL); |
11761 | ||
11762 | /* But wait, there's more! Input sections up to stub_group_size | |
11763 | bytes before the stub section can be handled by it too. | |
11764 | Don't do this if we have a really large section after the | |
11765 | stubs, as adding more stubs increases the chance that | |
11766 | branches may not reach into the stub section. */ | |
11767 | if (!stubs_always_before_branch && !big_sec) | |
11768 | { | |
11769 | total = 0; | |
11770 | while (prev != NULL | |
11771 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11772 | < (ppc64_elf_section_data (prev) != NULL |
11773 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11774 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11775 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11776 | { | |
11777 | tail = prev; | |
11778 | prev = PREV_SEC (tail); | |
11779 | htab->stub_group[tail->id].link_sec = curr; | |
11780 | } | |
11781 | } | |
11782 | tail = prev; | |
721956f4 AM |
11783 | } |
11784 | } | |
734b6cf9 AM |
11785 | while (list-- != htab->input_list); |
11786 | free (htab->input_list); | |
721956f4 AM |
11787 | #undef PREV_SEC |
11788 | } | |
11789 | ||
58d180e8 AM |
11790 | static const unsigned char glink_eh_frame_cie[] = |
11791 | { | |
11792 | 0, 0, 0, 16, /* length. */ | |
11793 | 0, 0, 0, 0, /* id. */ | |
11794 | 1, /* CIE version. */ | |
11795 | 'z', 'R', 0, /* Augmentation string. */ | |
11796 | 4, /* Code alignment. */ | |
11797 | 0x78, /* Data alignment. */ | |
11798 | 65, /* RA reg. */ | |
11799 | 1, /* Augmentation size. */ | |
11800 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11801 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11802 | }; | |
11803 | ||
d969d15f AM |
11804 | /* Stripping output sections is normally done before dynamic section |
11805 | symbols have been allocated. This function is called later, and | |
11806 | handles cases like htab->brlt which is mapped to its own output | |
11807 | section. */ | |
11808 | ||
11809 | static void | |
11810 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11811 | { | |
11812 | if (isec->size == 0 | |
11813 | && isec->output_section->size == 0 | |
53d8967a | 11814 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11815 | && !bfd_section_removed_from_list (info->output_bfd, |
11816 | isec->output_section) | |
11817 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11818 | { | |
11819 | isec->output_section->flags |= SEC_EXCLUDE; | |
11820 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11821 | info->output_bfd->section_count--; | |
11822 | } | |
11823 | } | |
11824 | ||
721956f4 AM |
11825 | /* Determine and set the size of the stub section for a final link. |
11826 | ||
11827 | The basic idea here is to examine all the relocations looking for | |
11828 | PC-relative calls to a target that is unreachable with a "bl" | |
11829 | instruction. */ | |
11830 | ||
b34976b6 | 11831 | bfd_boolean |
9df0ef5f | 11832 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
794e51c0 AM |
11833 | bfd_boolean plt_static_chain, int plt_thread_safe, |
11834 | int plt_stub_align) | |
721956f4 AM |
11835 | { |
11836 | bfd_size_type stub_group_size; | |
b34976b6 | 11837 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11838 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11839 | ||
4dfe6ac6 NC |
11840 | if (htab == NULL) |
11841 | return FALSE; | |
11842 | ||
9df0ef5f | 11843 | htab->plt_static_chain = plt_static_chain; |
794e51c0 | 11844 | htab->plt_stub_align = plt_stub_align; |
e2458743 AM |
11845 | if (plt_thread_safe == -1 && !info->executable) |
11846 | plt_thread_safe = 1; | |
b9e5796b AM |
11847 | if (!htab->opd_abi) |
11848 | plt_thread_safe = 0; | |
11849 | else if (plt_thread_safe == -1) | |
794e51c0 | 11850 | { |
e2458743 | 11851 | static const char *const thread_starter[] = |
794e51c0 AM |
11852 | { |
11853 | "pthread_create", | |
11854 | /* libstdc++ */ | |
11855 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11856 | /* librt */ | |
11857 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11858 | "mq_notify", "create_timer", | |
11859 | /* libanl */ | |
11860 | "getaddrinfo_a", | |
11861 | /* libgomp */ | |
11862 | "GOMP_parallel_start", | |
11863 | "GOMP_parallel_loop_static_start", | |
11864 | "GOMP_parallel_loop_dynamic_start", | |
11865 | "GOMP_parallel_loop_guided_start", | |
11866 | "GOMP_parallel_loop_runtime_start", | |
68ffbac6 | 11867 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11868 | }; |
11869 | unsigned i; | |
11870 | ||
11871 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11872 | { | |
11873 | struct elf_link_hash_entry *h; | |
11874 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11875 | FALSE, FALSE, TRUE); | |
11876 | plt_thread_safe = h != NULL && h->ref_regular; | |
11877 | if (plt_thread_safe) | |
11878 | break; | |
11879 | } | |
11880 | } | |
11881 | htab->plt_thread_safe = plt_thread_safe; | |
721956f4 AM |
11882 | stubs_always_before_branch = group_size < 0; |
11883 | if (group_size < 0) | |
11884 | stub_group_size = -group_size; | |
11885 | else | |
11886 | stub_group_size = group_size; | |
721956f4 AM |
11887 | |
11888 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11889 | ||
721956f4 AM |
11890 | while (1) |
11891 | { | |
11892 | bfd *input_bfd; | |
11893 | unsigned int bfd_indx; | |
11894 | asection *stub_sec; | |
721956f4 AM |
11895 | |
11896 | htab->stub_iteration += 1; | |
721956f4 AM |
11897 | |
11898 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11899 | input_bfd != NULL; | |
11900 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11901 | { | |
11902 | Elf_Internal_Shdr *symtab_hdr; | |
11903 | asection *section; | |
6cdc0ccc | 11904 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11905 | |
0c8d6e5c | 11906 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11907 | continue; |
11908 | ||
721956f4 | 11909 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11910 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11911 | if (symtab_hdr->sh_info == 0) |
11912 | continue; | |
11913 | ||
721956f4 AM |
11914 | /* Walk over each section attached to the input bfd. */ |
11915 | for (section = input_bfd->sections; | |
11916 | section != NULL; | |
11917 | section = section->next) | |
11918 | { | |
721956f4 | 11919 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11920 | |
11921 | /* If there aren't any relocs, then there's nothing more | |
11922 | to do. */ | |
11923 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11924 | || (section->flags & SEC_ALLOC) == 0 |
11925 | || (section->flags & SEC_LOAD) == 0 | |
11926 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11927 | || section->reloc_count == 0) |
11928 | continue; | |
11929 | ||
11930 | /* If this section is a link-once section that will be | |
11931 | discarded, then don't create any stubs. */ | |
11932 | if (section->output_section == NULL | |
927be08e | 11933 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11934 | continue; |
11935 | ||
1e2f5b6e AM |
11936 | /* Get the relocs. */ |
11937 | internal_relocs | |
4ce794b7 | 11938 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11939 | info->keep_memory); |
721956f4 | 11940 | if (internal_relocs == NULL) |
1e2f5b6e | 11941 | goto error_ret_free_local; |
721956f4 AM |
11942 | |
11943 | /* Now examine each relocation. */ | |
11944 | irela = internal_relocs; | |
11945 | irelaend = irela + section->reloc_count; | |
11946 | for (; irela < irelaend; irela++) | |
11947 | { | |
4ce794b7 AM |
11948 | enum elf_ppc64_reloc_type r_type; |
11949 | unsigned int r_indx; | |
721956f4 AM |
11950 | enum ppc_stub_type stub_type; |
11951 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11952 | asection *sym_sec, *code_sec; |
e054468f | 11953 | bfd_vma sym_value, code_value; |
721956f4 | 11954 | bfd_vma destination; |
6911b7dc | 11955 | unsigned long local_off; |
8843416a | 11956 | bfd_boolean ok_dest; |
721956f4 | 11957 | struct ppc_link_hash_entry *hash; |
8387904d | 11958 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11959 | struct elf_link_hash_entry *h; |
11960 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11961 | char *stub_name; |
11962 | const asection *id_sec; | |
74f0fb50 | 11963 | struct _opd_sec_data *opd; |
e054468f | 11964 | struct plt_entry *plt_ent; |
721956f4 AM |
11965 | |
11966 | r_type = ELF64_R_TYPE (irela->r_info); | |
11967 | r_indx = ELF64_R_SYM (irela->r_info); | |
11968 | ||
4ce794b7 | 11969 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11970 | { |
11971 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11972 | goto error_ret_free_internal; |
721956f4 AM |
11973 | } |
11974 | ||
11975 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
11976 | if (r_type != R_PPC64_REL24 |
11977 | && r_type != R_PPC64_REL14 | |
11978 | && r_type != R_PPC64_REL14_BRTAKEN | |
11979 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11980 | continue; |
11981 | ||
11982 | /* Now determine the call target, its name, value, | |
11983 | section. */ | |
411e1bfb AM |
11984 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11985 | r_indx, input_bfd)) | |
11986 | goto error_ret_free_internal; | |
11987 | hash = (struct ppc_link_hash_entry *) h; | |
11988 | ||
8843416a | 11989 | ok_dest = FALSE; |
8387904d | 11990 | fdh = NULL; |
7fe2b9a6 | 11991 | sym_value = 0; |
411e1bfb | 11992 | if (hash == NULL) |
721956f4 | 11993 | { |
411e1bfb | 11994 | sym_value = sym->st_value; |
8843416a | 11995 | ok_dest = TRUE; |
721956f4 | 11996 | } |
7fe2b9a6 AM |
11997 | else if (hash->elf.root.type == bfd_link_hash_defined |
11998 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11999 | { | |
12000 | sym_value = hash->elf.root.u.def.value; | |
12001 | if (sym_sec->output_section != NULL) | |
12002 | ok_dest = TRUE; | |
12003 | } | |
12004 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12005 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12006 | { |
99877b66 | 12007 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12008 | use the func descriptor sym instead if it is |
12009 | defined. */ | |
ceb1f1ef | 12010 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12011 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12012 | { |
8387904d AM |
12013 | if (fdh->elf.root.type == bfd_link_hash_defined |
12014 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12015 | { | |
12016 | sym_sec = fdh->elf.root.u.def.section; | |
12017 | sym_value = fdh->elf.root.u.def.value; | |
12018 | if (sym_sec->output_section != NULL) | |
12019 | ok_dest = TRUE; | |
12020 | } | |
99877b66 AM |
12021 | else |
12022 | fdh = NULL; | |
8387904d | 12023 | } |
7fe2b9a6 AM |
12024 | } |
12025 | else | |
12026 | { | |
12027 | bfd_set_error (bfd_error_bad_value); | |
12028 | goto error_ret_free_internal; | |
721956f4 AM |
12029 | } |
12030 | ||
8843416a | 12031 | destination = 0; |
6911b7dc | 12032 | local_off = 0; |
8843416a AM |
12033 | if (ok_dest) |
12034 | { | |
12035 | sym_value += irela->r_addend; | |
12036 | destination = (sym_value | |
12037 | + sym_sec->output_offset | |
12038 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12039 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12040 | ? hash->elf.other | |
12041 | : sym->st_other); | |
8843416a AM |
12042 | } |
12043 | ||
8387904d | 12044 | code_sec = sym_sec; |
e054468f | 12045 | code_value = sym_value; |
74f0fb50 AM |
12046 | opd = get_opd_info (sym_sec); |
12047 | if (opd != NULL) | |
8387904d AM |
12048 | { |
12049 | bfd_vma dest; | |
12050 | ||
74f0fb50 | 12051 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12052 | { |
74f0fb50 | 12053 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
12054 | if (adjust == -1) |
12055 | continue; | |
e054468f | 12056 | code_value += adjust; |
8387904d AM |
12057 | sym_value += adjust; |
12058 | } | |
12059 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12060 | &code_sec, &code_value, FALSE); |
8387904d AM |
12061 | if (dest != (bfd_vma) -1) |
12062 | { | |
12063 | destination = dest; | |
12064 | if (fdh != NULL) | |
12065 | { | |
12066 | /* Fixup old ABI sym to point at code | |
12067 | entry. */ | |
99877b66 | 12068 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12069 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12070 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12071 | } |
12072 | } | |
12073 | } | |
12074 | ||
721956f4 | 12075 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12076 | plt_ent = NULL; |
721956f4 | 12077 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12078 | &plt_ent, destination, |
12079 | local_off); | |
ad8e1ba5 AM |
12080 | |
12081 | if (stub_type != ppc_stub_plt_call) | |
12082 | { | |
12083 | /* Check whether we need a TOC adjusting stub. | |
12084 | Since the linker pastes together pieces from | |
12085 | different object files when creating the | |
12086 | _init and _fini functions, it may be that a | |
12087 | call to what looks like a local sym is in | |
12088 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12089 | if (code_sec != NULL |
12090 | && code_sec->output_section != NULL | |
12091 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 12092 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
12093 | && (code_sec->has_toc_reloc |
12094 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12095 | stub_type = ppc_stub_long_branch_r2off; |
12096 | } | |
12097 | ||
721956f4 AM |
12098 | if (stub_type == ppc_stub_none) |
12099 | continue; | |
12100 | ||
411e1bfb AM |
12101 | /* __tls_get_addr calls might be eliminated. */ |
12102 | if (stub_type != ppc_stub_plt_call | |
12103 | && hash != NULL | |
8387904d AM |
12104 | && (hash == htab->tls_get_addr |
12105 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12106 | && section->has_tls_reloc |
12107 | && irela != internal_relocs) | |
12108 | { | |
12109 | /* Get tls info. */ | |
f961d9dd | 12110 | unsigned char *tls_mask; |
411e1bfb | 12111 | |
3a71aa26 | 12112 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12113 | irela - 1, input_bfd)) |
12114 | goto error_ret_free_internal; | |
e7b938ca | 12115 | if (*tls_mask != 0) |
411e1bfb AM |
12116 | continue; |
12117 | } | |
12118 | ||
3b421ab3 AM |
12119 | if (stub_type == ppc_stub_plt_call |
12120 | && irela + 1 < irelaend | |
12121 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12122 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12123 | { | |
12124 | if (!tocsave_find (htab, INSERT, | |
12125 | &local_syms, irela + 1, input_bfd)) | |
12126 | goto error_ret_free_internal; | |
12127 | } | |
12128 | else if (stub_type == ppc_stub_plt_call) | |
12129 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12130 | |
721956f4 AM |
12131 | /* Support for grouping stub sections. */ |
12132 | id_sec = htab->stub_group[section->id].link_sec; | |
12133 | ||
12134 | /* Get the name of this stub. */ | |
12135 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12136 | if (!stub_name) | |
12137 | goto error_ret_free_internal; | |
12138 | ||
12139 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12140 | stub_name, FALSE, FALSE); |
721956f4 AM |
12141 | if (stub_entry != NULL) |
12142 | { | |
12143 | /* The proper stub has already been created. */ | |
12144 | free (stub_name); | |
794e51c0 AM |
12145 | if (stub_type == ppc_stub_plt_call_r2save) |
12146 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12147 | continue; |
12148 | } | |
12149 | ||
25f53a85 | 12150 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12151 | if (stub_entry == NULL) |
12152 | { | |
12153 | free (stub_name); | |
6cdc0ccc AM |
12154 | error_ret_free_internal: |
12155 | if (elf_section_data (section)->relocs == NULL) | |
12156 | free (internal_relocs); | |
12157 | error_ret_free_local: | |
12158 | if (local_syms != NULL | |
12159 | && (symtab_hdr->contents | |
12160 | != (unsigned char *) local_syms)) | |
12161 | free (local_syms); | |
b34976b6 | 12162 | return FALSE; |
721956f4 AM |
12163 | } |
12164 | ||
ad8e1ba5 | 12165 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12166 | if (stub_type != ppc_stub_plt_call |
12167 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12168 | { |
12169 | stub_entry->target_value = code_value; | |
12170 | stub_entry->target_section = code_sec; | |
12171 | } | |
12172 | else | |
12173 | { | |
12174 | stub_entry->target_value = sym_value; | |
12175 | stub_entry->target_section = sym_sec; | |
12176 | } | |
721956f4 | 12177 | stub_entry->h = hash; |
e054468f | 12178 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12179 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12180 | |
12181 | if (stub_entry->h != NULL) | |
12182 | htab->stub_globals += 1; | |
721956f4 AM |
12183 | } |
12184 | ||
12185 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12186 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12187 | free (internal_relocs); |
721956f4 | 12188 | } |
6cdc0ccc AM |
12189 | |
12190 | if (local_syms != NULL | |
12191 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12192 | { | |
12193 | if (!info->keep_memory) | |
12194 | free (local_syms); | |
12195 | else | |
12196 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12197 | } | |
721956f4 AM |
12198 | } |
12199 | ||
5c3dead3 | 12200 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
12201 | stub sections. */ |
12202 | for (stub_sec = htab->stub_bfd->sections; | |
12203 | stub_sec != NULL; | |
12204 | stub_sec = stub_sec->next) | |
e717da7e | 12205 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12206 | { |
5c3dead3 | 12207 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12208 | stub_sec->size = 0; |
12209 | stub_sec->reloc_count = 0; | |
84f5d08e | 12210 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12211 | } |
eea6121a AM |
12212 | |
12213 | htab->brlt->size = 0; | |
84f5d08e AM |
12214 | htab->brlt->reloc_count = 0; |
12215 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12216 | if (htab->relbrlt != NULL) |
eea6121a | 12217 | htab->relbrlt->size = 0; |
721956f4 | 12218 | |
63bc6f6c | 12219 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12220 | |
176a0d42 AM |
12221 | if (info->emitrelocations |
12222 | && htab->glink != NULL && htab->glink->size != 0) | |
12223 | { | |
12224 | htab->glink->reloc_count = 1; | |
12225 | htab->glink->flags |= SEC_RELOC; | |
12226 | } | |
12227 | ||
58d180e8 AM |
12228 | if (htab->glink_eh_frame != NULL |
12229 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12230 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12231 | { |
4bbe044a | 12232 | size_t size = 0, align; |
58d180e8 AM |
12233 | |
12234 | for (stub_sec = htab->stub_bfd->sections; | |
12235 | stub_sec != NULL; | |
12236 | stub_sec = stub_sec->next) | |
12237 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12238 | size += 20; | |
12239 | if (htab->glink != NULL && htab->glink->size != 0) | |
12240 | size += 24; | |
12241 | if (size != 0) | |
12242 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12243 | align = 1; |
12244 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12245 | align -= 1; | |
12246 | size = (size + align) & ~align; | |
58d180e8 AM |
12247 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12248 | htab->glink_eh_frame->size = size; | |
12249 | } | |
12250 | ||
794e51c0 AM |
12251 | if (htab->plt_stub_align != 0) |
12252 | for (stub_sec = htab->stub_bfd->sections; | |
12253 | stub_sec != NULL; | |
12254 | stub_sec = stub_sec->next) | |
12255 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12256 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
12257 | & (-1 << htab->plt_stub_align)); | |
12258 | ||
5c3dead3 AM |
12259 | for (stub_sec = htab->stub_bfd->sections; |
12260 | stub_sec != NULL; | |
12261 | stub_sec = stub_sec->next) | |
12262 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12263 | && stub_sec->rawsize != stub_sec->size) | |
12264 | break; | |
12265 | ||
12266 | /* Exit from this loop when no stubs have been added, and no stubs | |
12267 | have changed size. */ | |
58d180e8 AM |
12268 | if (stub_sec == NULL |
12269 | && (htab->glink_eh_frame == NULL | |
12270 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12271 | break; |
12272 | ||
721956f4 AM |
12273 | /* Ask the linker to do its stuff. */ |
12274 | (*htab->layout_sections_again) (); | |
12275 | } | |
12276 | ||
d969d15f AM |
12277 | maybe_strip_output (info, htab->brlt); |
12278 | if (htab->glink_eh_frame != NULL) | |
12279 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12280 | |
b34976b6 | 12281 | return TRUE; |
721956f4 AM |
12282 | } |
12283 | ||
12284 | /* Called after we have determined section placement. If sections | |
805fc799 | 12285 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12286 | |
805fc799 | 12287 | bfd_vma |
1c865ab2 | 12288 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12289 | { |
805fc799 AM |
12290 | asection *s; |
12291 | bfd_vma TOCstart; | |
721956f4 | 12292 | |
805fc799 AM |
12293 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12294 | order. The TOC starts where the first of these sections starts. */ | |
12295 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12296 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12297 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12298 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12299 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12300 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12301 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12302 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12303 | { |
12304 | /* This may happen for | |
12305 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12306 | .toc directive | |
12307 | o bad linker script | |
12308 | o --gc-sections and empty TOC sections | |
12309 | ||
12310 | FIXME: Warn user? */ | |
12311 | ||
12312 | /* Look for a likely section. We probably won't even be | |
12313 | using TOCstart. */ | |
12314 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12315 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12316 | | SEC_EXCLUDE)) | |
805fc799 AM |
12317 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12318 | break; | |
721956f4 | 12319 | if (s == NULL) |
805fc799 | 12320 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12321 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12322 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12323 | break; | |
721956f4 | 12324 | if (s == NULL) |
805fc799 | 12325 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12326 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12327 | == SEC_ALLOC) | |
805fc799 | 12328 | break; |
721956f4 | 12329 | if (s == NULL) |
805fc799 | 12330 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12331 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12332 | break; |
12333 | } | |
721956f4 | 12334 | |
805fc799 AM |
12335 | TOCstart = 0; |
12336 | if (s != NULL) | |
12337 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12338 | |
1c865ab2 AM |
12339 | _bfd_set_gp_value (obfd, TOCstart); |
12340 | ||
12341 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
12342 | { | |
12343 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12344 | ||
12345 | if (htab != NULL | |
12346 | && htab->elf.hgot != NULL) | |
12347 | { | |
1c865ab2 AM |
12348 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; |
12349 | htab->elf.hgot->root.u.def.section = s; | |
12350 | } | |
12351 | } | |
805fc799 | 12352 | return TOCstart; |
721956f4 AM |
12353 | } |
12354 | ||
a345bc8d AM |
12355 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12356 | write out any global entry stubs. */ | |
12357 | ||
12358 | static bfd_boolean | |
12359 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12360 | { | |
12361 | struct bfd_link_info *info; | |
12362 | struct ppc_link_hash_table *htab; | |
12363 | struct plt_entry *pent; | |
12364 | asection *s; | |
12365 | ||
12366 | if (h->root.type == bfd_link_hash_indirect) | |
12367 | return TRUE; | |
12368 | ||
12369 | if (!h->pointer_equality_needed) | |
12370 | return TRUE; | |
12371 | ||
12372 | if (h->def_regular) | |
12373 | return TRUE; | |
12374 | ||
12375 | info = inf; | |
12376 | htab = ppc_hash_table (info); | |
12377 | if (htab == NULL) | |
12378 | return FALSE; | |
12379 | ||
12380 | s = htab->glink; | |
12381 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12382 | if (pent->plt.offset != (bfd_vma) -1 | |
12383 | && pent->addend == 0) | |
12384 | { | |
12385 | bfd_byte *p; | |
12386 | asection *plt; | |
12387 | bfd_vma off; | |
12388 | ||
a345bc8d | 12389 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12390 | plt = htab->elf.splt; |
a345bc8d AM |
12391 | if (!htab->elf.dynamic_sections_created |
12392 | || h->dynindx == -1) | |
33e44f2e | 12393 | plt = htab->elf.iplt; |
a345bc8d AM |
12394 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12395 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12396 | ||
12397 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12398 | { | |
12399 | info->callbacks->einfo | |
12400 | (_("%P: linkage table error against `%T'\n"), | |
12401 | h->root.root.string); | |
12402 | bfd_set_error (bfd_error_bad_value); | |
12403 | htab->stub_error = TRUE; | |
12404 | } | |
12405 | ||
12406 | if (PPC_HA (off) != 0) | |
12407 | { | |
12408 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12409 | p += 4; | |
12410 | } | |
12411 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12412 | p += 4; | |
12413 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12414 | p += 4; | |
12415 | bfd_put_32 (s->owner, BCTR, p); | |
12416 | break; | |
12417 | } | |
12418 | return TRUE; | |
12419 | } | |
12420 | ||
721956f4 AM |
12421 | /* Build all the stubs associated with the current output file. |
12422 | The stubs are kept in a hash table attached to the main linker | |
12423 | hash table. This function is called via gldelf64ppc_finish. */ | |
12424 | ||
b34976b6 | 12425 | bfd_boolean |
4ce794b7 AM |
12426 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
12427 | struct bfd_link_info *info, | |
12428 | char **stats) | |
5d1634d7 AM |
12429 | { |
12430 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 12431 | asection *stub_sec; |
5d1634d7 | 12432 | bfd_byte *p; |
e717da7e | 12433 | int stub_sec_count = 0; |
5d1634d7 | 12434 | |
4dfe6ac6 NC |
12435 | if (htab == NULL) |
12436 | return FALSE; | |
12437 | ||
ad8e1ba5 | 12438 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
12439 | |
12440 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
12441 | for (stub_sec = htab->stub_bfd->sections; |
12442 | stub_sec != NULL; | |
12443 | stub_sec = stub_sec->next) | |
eea6121a AM |
12444 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12445 | && stub_sec->size != 0) | |
e717da7e | 12446 | { |
eea6121a AM |
12447 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
12448 | if (stub_sec->contents == NULL) | |
12449 | return FALSE; | |
12450 | /* We want to check that built size is the same as calculated | |
12451 | size. rawsize is a convenient location to use. */ | |
12452 | stub_sec->rawsize = stub_sec->size; | |
12453 | stub_sec->size = 0; | |
e717da7e | 12454 | } |
5d1634d7 | 12455 | |
23eb7e01 | 12456 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12457 | { |
9f951329 | 12458 | unsigned int indx; |
ad8e1ba5 | 12459 | bfd_vma plt0; |
9f951329 | 12460 | |
721956f4 | 12461 | /* Build the .glink plt call stub. */ |
97b639ba AM |
12462 | if (htab->emit_stub_syms) |
12463 | { | |
12464 | struct elf_link_hash_entry *h; | |
468392fb AM |
12465 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12466 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12467 | if (h == NULL) |
12468 | return FALSE; | |
12469 | if (h->root.type == bfd_link_hash_new) | |
12470 | { | |
12471 | h->root.type = bfd_link_hash_defined; | |
12472 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12473 | h->root.u.def.value = 8; |
f5385ebf AM |
12474 | h->ref_regular = 1; |
12475 | h->def_regular = 1; | |
12476 | h->ref_regular_nonweak = 1; | |
12477 | h->forced_local = 1; | |
12478 | h->non_elf = 0; | |
97b639ba AM |
12479 | } |
12480 | } | |
33e44f2e AM |
12481 | plt0 = (htab->elf.splt->output_section->vma |
12482 | + htab->elf.splt->output_offset | |
12483 | - 16); | |
176a0d42 AM |
12484 | if (info->emitrelocations) |
12485 | { | |
12486 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12487 | if (r == NULL) | |
12488 | return FALSE; | |
12489 | r->r_offset = (htab->glink->output_offset | |
12490 | + htab->glink->output_section->vma); | |
12491 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12492 | r->r_addend = plt0; | |
12493 | } | |
4ce794b7 | 12494 | p = htab->glink->contents; |
176a0d42 | 12495 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12496 | bfd_put_64 (htab->glink->owner, plt0, p); |
12497 | p += 8; | |
b9e5796b AM |
12498 | if (htab->opd_abi) |
12499 | { | |
12500 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12501 | p += 4; | |
12502 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12503 | p += 4; | |
12504 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12505 | p += 4; | |
12506 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12507 | p += 4; | |
12508 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12509 | p += 4; | |
12510 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12511 | p += 4; | |
12512 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12513 | p += 4; | |
12514 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12515 | p += 4; | |
12516 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12517 | p += 4; | |
12518 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12519 | p += 4; | |
12520 | } | |
12521 | else | |
12522 | { | |
12523 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12524 | p += 4; | |
12525 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12526 | p += 4; | |
12527 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12528 | p += 4; | |
12529 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12530 | p += 4; | |
12531 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12532 | p += 4; | |
12533 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12534 | p += 4; | |
12535 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12536 | p += 4; | |
12537 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12538 | p += 4; | |
12539 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12540 | p += 4; | |
12541 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12542 | p += 4; | |
12543 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12544 | p += 4; | |
12545 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12546 | p += 4; | |
12547 | } | |
4ce794b7 | 12548 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12549 | p += 4; |
ee4bf8d2 AM |
12550 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12551 | { | |
12552 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12553 | p += 4; | |
12554 | } | |
ad8e1ba5 | 12555 | |
9f951329 AM |
12556 | /* Build the .glink lazy link call stubs. */ |
12557 | indx = 0; | |
a345bc8d | 12558 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12559 | { |
b9e5796b | 12560 | if (htab->opd_abi) |
9f951329 | 12561 | { |
b9e5796b AM |
12562 | if (indx < 0x8000) |
12563 | { | |
12564 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12565 | p += 4; | |
12566 | } | |
12567 | else | |
12568 | { | |
12569 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12570 | p += 4; | |
12571 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12572 | p); | |
12573 | p += 4; | |
12574 | } | |
9f951329 | 12575 | } |
4ce794b7 | 12576 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12577 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12578 | indx++; |
9f951329 AM |
12579 | p += 4; |
12580 | } | |
a345bc8d AM |
12581 | |
12582 | /* Build .glink global entry stubs. */ | |
12583 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12584 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12585 | } |
5d1634d7 | 12586 | |
eea6121a | 12587 | if (htab->brlt->size != 0) |
721956f4 | 12588 | { |
4ce794b7 | 12589 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12590 | htab->brlt->size); |
4ce794b7 | 12591 | if (htab->brlt->contents == NULL) |
b34976b6 | 12592 | return FALSE; |
721956f4 | 12593 | } |
ee75fd95 | 12594 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12595 | { |
12596 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12597 | htab->relbrlt->size); |
63bc6f6c AM |
12598 | if (htab->relbrlt->contents == NULL) |
12599 | return FALSE; | |
12600 | } | |
5d1634d7 | 12601 | |
58d180e8 AM |
12602 | if (htab->glink_eh_frame != NULL |
12603 | && htab->glink_eh_frame->size != 0) | |
12604 | { | |
12605 | bfd_vma val; | |
4bbe044a AM |
12606 | bfd_byte *last_fde; |
12607 | size_t last_fde_len, size, align, pad; | |
58d180e8 AM |
12608 | |
12609 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12610 | if (p == NULL) | |
12611 | return FALSE; | |
12612 | htab->glink_eh_frame->contents = p; | |
4bbe044a | 12613 | last_fde = p; |
58d180e8 AM |
12614 | |
12615 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
12616 | ||
12617 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12618 | /* CIE length (rewrite in case little-endian). */ | |
4bbe044a AM |
12619 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
12620 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
58d180e8 AM |
12621 | p += sizeof (glink_eh_frame_cie); |
12622 | ||
12623 | for (stub_sec = htab->stub_bfd->sections; | |
12624 | stub_sec != NULL; | |
12625 | stub_sec = stub_sec->next) | |
12626 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12627 | { | |
4bbe044a AM |
12628 | last_fde = p; |
12629 | last_fde_len = 16; | |
58d180e8 AM |
12630 | /* FDE length. */ |
12631 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
12632 | p += 4; | |
12633 | /* CIE pointer. */ | |
12634 | val = p - htab->glink_eh_frame->contents; | |
12635 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12636 | p += 4; | |
12637 | /* Offset to stub section. */ | |
12638 | val = (stub_sec->output_section->vma | |
12639 | + stub_sec->output_offset); | |
12640 | val -= (htab->glink_eh_frame->output_section->vma | |
12641 | + htab->glink_eh_frame->output_offset); | |
12642 | val -= p - htab->glink_eh_frame->contents; | |
12643 | if (val + 0x80000000 > 0xffffffff) | |
12644 | { | |
12645 | info->callbacks->einfo | |
8de848d8 | 12646 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12647 | stub_sec->name); |
12648 | return FALSE; | |
12649 | } | |
12650 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12651 | p += 4; | |
12652 | /* stub section size. */ | |
12653 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
12654 | p += 4; | |
12655 | /* Augmentation. */ | |
12656 | p += 1; | |
12657 | /* Pad. */ | |
12658 | p += 3; | |
12659 | } | |
12660 | if (htab->glink != NULL && htab->glink->size != 0) | |
12661 | { | |
4bbe044a AM |
12662 | last_fde = p; |
12663 | last_fde_len = 20; | |
58d180e8 AM |
12664 | /* FDE length. */ |
12665 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12666 | p += 4; | |
12667 | /* CIE pointer. */ | |
12668 | val = p - htab->glink_eh_frame->contents; | |
12669 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12670 | p += 4; | |
12671 | /* Offset to .glink. */ | |
12672 | val = (htab->glink->output_section->vma | |
12673 | + htab->glink->output_offset | |
12674 | + 8); | |
12675 | val -= (htab->glink_eh_frame->output_section->vma | |
12676 | + htab->glink_eh_frame->output_offset); | |
12677 | val -= p - htab->glink_eh_frame->contents; | |
12678 | if (val + 0x80000000 > 0xffffffff) | |
12679 | { | |
12680 | info->callbacks->einfo | |
8de848d8 | 12681 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12682 | htab->glink->name); |
12683 | return FALSE; | |
12684 | } | |
12685 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12686 | p += 4; | |
12687 | /* .glink size. */ | |
a345bc8d | 12688 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); |
58d180e8 AM |
12689 | p += 4; |
12690 | /* Augmentation. */ | |
12691 | p += 1; | |
12692 | ||
12693 | *p++ = DW_CFA_advance_loc + 1; | |
12694 | *p++ = DW_CFA_register; | |
12695 | *p++ = 65; | |
12696 | *p++ = 12; | |
12697 | *p++ = DW_CFA_advance_loc + 4; | |
12698 | *p++ = DW_CFA_restore_extended; | |
12699 | *p++ = 65; | |
12700 | } | |
4bbe044a AM |
12701 | /* Subsume any padding into the last FDE if user .eh_frame |
12702 | sections are aligned more than glink_eh_frame. Otherwise any | |
12703 | zero padding will be seen as a terminator. */ | |
12704 | size = p - htab->glink_eh_frame->contents; | |
12705 | align = 1; | |
12706 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12707 | align -= 1; | |
12708 | pad = ((size + align) & ~align) - size; | |
12709 | htab->glink_eh_frame->size = size + pad; | |
12710 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
58d180e8 AM |
12711 | } |
12712 | ||
721956f4 AM |
12713 | /* Build the stubs as directed by the stub hash table. */ |
12714 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12715 | |
aa8a7074 AM |
12716 | if (htab->relbrlt != NULL) |
12717 | htab->relbrlt->reloc_count = 0; | |
12718 | ||
794e51c0 AM |
12719 | if (htab->plt_stub_align != 0) |
12720 | for (stub_sec = htab->stub_bfd->sections; | |
12721 | stub_sec != NULL; | |
12722 | stub_sec = stub_sec->next) | |
12723 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12724 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
12725 | & (-1 << htab->plt_stub_align)); | |
12726 | ||
721956f4 AM |
12727 | for (stub_sec = htab->stub_bfd->sections; |
12728 | stub_sec != NULL; | |
12729 | stub_sec = stub_sec->next) | |
e717da7e AM |
12730 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12731 | { | |
12732 | stub_sec_count += 1; | |
eea6121a | 12733 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12734 | break; |
12735 | } | |
5d1634d7 | 12736 | |
721956f4 | 12737 | if (stub_sec != NULL |
58d180e8 AM |
12738 | || (htab->glink_eh_frame != NULL |
12739 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12740 | { |
b34976b6 | 12741 | htab->stub_error = TRUE; |
8de848d8 | 12742 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12743 | } |
721956f4 | 12744 | |
d2a300cf AM |
12745 | if (htab->stub_error) |
12746 | return FALSE; | |
12747 | ||
12748 | if (stats != NULL) | |
12749 | { | |
12750 | *stats = bfd_malloc (500); | |
12751 | if (*stats == NULL) | |
12752 | return FALSE; | |
12753 | ||
ee75fd95 | 12754 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12755 | " branch %lu\n" |
12756 | " toc adjust %lu\n" | |
12757 | " long branch %lu\n" | |
12758 | " long toc adj %lu\n" | |
794e51c0 AM |
12759 | " plt call %lu\n" |
12760 | " plt call toc %lu"), | |
e717da7e | 12761 | stub_sec_count, |
ee75fd95 | 12762 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12763 | htab->stub_count[ppc_stub_long_branch - 1], |
12764 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12765 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12766 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 AM |
12767 | htab->stub_count[ppc_stub_plt_call - 1], |
12768 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
d2a300cf AM |
12769 | } |
12770 | return TRUE; | |
5bd4f169 AM |
12771 | } |
12772 | ||
99877b66 AM |
12773 | /* This function undoes the changes made by add_symbol_adjust. */ |
12774 | ||
12775 | static bfd_boolean | |
12776 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12777 | { | |
12778 | struct ppc_link_hash_entry *eh; | |
12779 | ||
12780 | if (h->root.type == bfd_link_hash_indirect) | |
12781 | return TRUE; | |
12782 | ||
99877b66 AM |
12783 | eh = (struct ppc_link_hash_entry *) h; |
12784 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12785 | return TRUE; | |
12786 | ||
12787 | eh->elf.root.type = bfd_link_hash_undefined; | |
12788 | return TRUE; | |
12789 | } | |
12790 | ||
12791 | void | |
12792 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12793 | { | |
12794 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12795 | |
12796 | if (htab != NULL) | |
12797 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12798 | } |
12799 | ||
60124e18 AM |
12800 | /* What to do when ld finds relocations against symbols defined in |
12801 | discarded sections. */ | |
12802 | ||
12803 | static unsigned int | |
12804 | ppc64_elf_action_discarded (asection *sec) | |
12805 | { | |
12806 | if (strcmp (".opd", sec->name) == 0) | |
12807 | return 0; | |
12808 | ||
12809 | if (strcmp (".toc", sec->name) == 0) | |
12810 | return 0; | |
12811 | ||
bce50a28 JJ |
12812 | if (strcmp (".toc1", sec->name) == 0) |
12813 | return 0; | |
12814 | ||
60124e18 AM |
12815 | return _bfd_elf_default_action_discarded (sec); |
12816 | } | |
12817 | ||
5bd4f169 AM |
12818 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12819 | to handle the relocations for a section. | |
12820 | ||
12821 | The relocs are always passed as Rela structures; if the section | |
12822 | actually uses Rel structures, the r_addend field will always be | |
12823 | zero. | |
12824 | ||
12825 | This function is responsible for adjust the section contents as | |
12826 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12827 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12828 | necessary. |
12829 | ||
12830 | This function does not have to worry about setting the reloc | |
12831 | address or the reloc symbol index. | |
12832 | ||
12833 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12834 | ||
12835 | LOCAL_SECTIONS is an array giving the section in the input file | |
12836 | corresponding to the st_shndx field of each local symbol. | |
12837 | ||
12838 | The global hash table entry for the global symbols can be found | |
12839 | via elf_sym_hashes (input_bfd). | |
12840 | ||
1049f94e | 12841 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12842 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12843 | going to be the section symbol corresponding to the output | |
12844 | section, which means that the addend must be adjusted | |
12845 | accordingly. */ | |
12846 | ||
b34976b6 | 12847 | static bfd_boolean |
4ce794b7 AM |
12848 | ppc64_elf_relocate_section (bfd *output_bfd, |
12849 | struct bfd_link_info *info, | |
12850 | bfd *input_bfd, | |
12851 | asection *input_section, | |
12852 | bfd_byte *contents, | |
12853 | Elf_Internal_Rela *relocs, | |
12854 | Elf_Internal_Sym *local_syms, | |
12855 | asection **local_sections) | |
5bd4f169 | 12856 | { |
65f38f15 | 12857 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12858 | Elf_Internal_Shdr *symtab_hdr; |
12859 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12860 | Elf_Internal_Rela *rel; |
12861 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12862 | Elf_Internal_Rela outrel; |
12863 | bfd_byte *loc; | |
411e1bfb | 12864 | struct got_entry **local_got_ents; |
5bd4f169 | 12865 | bfd_vma TOCstart; |
b34976b6 AM |
12866 | bfd_boolean ret = TRUE; |
12867 | bfd_boolean is_opd; | |
794e51c0 AM |
12868 | /* Assume 'at' branch hints. */ |
12869 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12870 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12871 | |
65f38f15 | 12872 | /* Initialize howto table if needed. */ |
5bd4f169 | 12873 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12874 | ppc_howto_init (); |
12875 | ||
65f38f15 | 12876 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12877 | if (htab == NULL) |
12878 | return FALSE; | |
ee75fd95 AM |
12879 | |
12880 | /* Don't relocate stub sections. */ | |
12881 | if (input_section->owner == htab->stub_bfd) | |
12882 | return TRUE; | |
12883 | ||
0c8d6e5c | 12884 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 12885 | |
411e1bfb | 12886 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 12887 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 12888 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 12889 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 12890 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 12891 | |
5bd4f169 AM |
12892 | rel = relocs; |
12893 | relend = relocs + input_section->reloc_count; | |
12894 | for (; rel < relend; rel++) | |
12895 | { | |
04c9666a | 12896 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 12897 | bfd_vma addend; |
5bd4f169 AM |
12898 | bfd_reloc_status_type r; |
12899 | Elf_Internal_Sym *sym; | |
12900 | asection *sec; | |
039b3fef AM |
12901 | struct elf_link_hash_entry *h_elf; |
12902 | struct ppc_link_hash_entry *h; | |
12903 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 12904 | const char *sym_name; |
0d4792f7 | 12905 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 12906 | bfd_vma toc_addend; |
f961d9dd AM |
12907 | unsigned char tls_mask, tls_gd, tls_type; |
12908 | unsigned char sym_type; | |
5bd4f169 | 12909 | bfd_vma relocation; |
b34976b6 AM |
12910 | bfd_boolean unresolved_reloc; |
12911 | bfd_boolean warned; | |
bc30df16 | 12912 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 12913 | unsigned int insn; |
e11840f9 | 12914 | unsigned int mask; |
721956f4 AM |
12915 | struct ppc_stub_hash_entry *stub_entry; |
12916 | bfd_vma max_br_offset; | |
12917 | bfd_vma from; | |
31c76678 | 12918 | const Elf_Internal_Rela orig_rel = *rel; |
5bd4f169 | 12919 | |
4ce794b7 | 12920 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 12921 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
12922 | |
12923 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
12924 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
12925 | proper TOC base to use. */ | |
12926 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
12927 | && rel != relocs | |
12928 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
12929 | && is_opd) | |
12930 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
12931 | ||
4ce794b7 AM |
12932 | sym = NULL; |
12933 | sec = NULL; | |
039b3fef | 12934 | h_elf = NULL; |
4ce794b7 | 12935 | sym_name = NULL; |
b34976b6 AM |
12936 | unresolved_reloc = FALSE; |
12937 | warned = FALSE; | |
65f38f15 | 12938 | |
0b13192e | 12939 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
12940 | { |
12941 | /* It's a local symbol. */ | |
74f0fb50 | 12942 | struct _opd_sec_data *opd; |
4025353c | 12943 | |
5bd4f169 AM |
12944 | sym = local_syms + r_symndx; |
12945 | sec = local_sections[r_symndx]; | |
26c61ae5 | 12946 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 12947 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 12948 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
12949 | opd = get_opd_info (sec); |
12950 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 12951 | { |
74f0fb50 | 12952 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
12953 | if (adjust == -1) |
12954 | relocation = 0; | |
12955 | else | |
4cc603a5 AM |
12956 | { |
12957 | /* If this is a relocation against the opd section sym | |
12958 | and we have edited .opd, adjust the reloc addend so | |
12959 | that ld -r and ld --emit-relocs output is correct. | |
12960 | If it is a reloc against some other .opd symbol, | |
12961 | then the symbol value will be adjusted later. */ | |
12962 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12963 | rel->r_addend += adjust; | |
12964 | else | |
12965 | relocation += adjust; | |
12966 | } | |
1e2f5b6e | 12967 | } |
5bd4f169 AM |
12968 | } |
12969 | else | |
12970 | { | |
62d887d4 L |
12971 | bfd_boolean ignored; |
12972 | ||
b2a8e766 AM |
12973 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
12974 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 12975 | h_elf, sec, relocation, |
62d887d4 | 12976 | unresolved_reloc, warned, ignored); |
039b3fef AM |
12977 | sym_name = h_elf->root.root.string; |
12978 | sym_type = h_elf->type; | |
b69fdb4e AM |
12979 | if (sec != NULL |
12980 | && sec->owner == output_bfd | |
12981 | && strcmp (sec->name, ".opd") == 0) | |
12982 | { | |
12983 | /* This is a symbol defined in a linker script. All | |
12984 | such are defined in output sections, even those | |
12985 | defined by simple assignment from a symbol defined in | |
12986 | an input section. Transfer the symbol to an | |
12987 | appropriate input .opd section, so that a branch to | |
12988 | this symbol will be mapped to the location specified | |
12989 | by the opd entry. */ | |
12990 | struct bfd_link_order *lo; | |
12991 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
12992 | if (lo->type == bfd_indirect_link_order) | |
12993 | { | |
12994 | asection *isec = lo->u.indirect.section; | |
12995 | if (h_elf->root.u.def.value >= isec->output_offset | |
12996 | && h_elf->root.u.def.value < (isec->output_offset | |
12997 | + isec->size)) | |
12998 | { | |
12999 | h_elf->root.u.def.value -= isec->output_offset; | |
13000 | h_elf->root.u.def.section = isec; | |
13001 | sec = isec; | |
13002 | break; | |
13003 | } | |
13004 | } | |
13005 | } | |
5bd4f169 | 13006 | } |
039b3fef | 13007 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13008 | |
dbaa2011 | 13009 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13010 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13011 | rel, 1, relend, |
13012 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13013 | contents); |
ab96bf03 AM |
13014 | |
13015 | if (info->relocatable) | |
13016 | continue; | |
13017 | ||
f40da81b AM |
13018 | if (h != NULL && &h->elf == htab->elf.hgot) |
13019 | { | |
13020 | relocation = (TOCstart | |
13021 | + htab->stub_group[input_section->id].toc_off); | |
13022 | sec = bfd_abs_section_ptr; | |
13023 | unresolved_reloc = FALSE; | |
13024 | } | |
13025 | ||
951fd09b AM |
13026 | /* TLS optimizations. Replace instruction sequences and relocs |
13027 | based on information we collected in tls_optimize. We edit | |
13028 | RELOCS so that --emit-relocs will output something sensible | |
13029 | for the final instruction stream. */ | |
13030 | tls_mask = 0; | |
13031 | tls_gd = 0; | |
0d4792f7 | 13032 | toc_symndx = 0; |
727fc41e AM |
13033 | if (h != NULL) |
13034 | tls_mask = h->tls_mask; | |
13035 | else if (local_got_ents != NULL) | |
411e1bfb | 13036 | { |
e054468f AM |
13037 | struct plt_entry **local_plt = (struct plt_entry **) |
13038 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13039 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13040 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13041 | tls_mask = lgot_masks[r_symndx]; |
13042 | } | |
13043 | if (tls_mask == 0 | |
13044 | && (r_type == R_PPC64_TLS | |
13045 | || r_type == R_PPC64_TLSGD | |
13046 | || r_type == R_PPC64_TLSLD)) | |
13047 | { | |
13048 | /* Check for toc tls entries. */ | |
f961d9dd | 13049 | unsigned char *toc_tls; |
0d4792f7 | 13050 | |
727fc41e AM |
13051 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13052 | &local_syms, rel, input_bfd)) | |
13053 | return FALSE; | |
0d4792f7 | 13054 | |
727fc41e AM |
13055 | if (toc_tls) |
13056 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13057 | } |
13058 | ||
13059 | /* Check that tls relocs are used with tls syms, and non-tls | |
13060 | relocs are used with non-tls syms. */ | |
cf35638d | 13061 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13062 | && r_type != R_PPC64_NONE |
13063 | && (h == NULL | |
039b3fef AM |
13064 | || h->elf.root.type == bfd_link_hash_defined |
13065 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13066 | && (IS_PPC64_TLS_RELOC (r_type) |
13067 | != (sym_type == STT_TLS | |
13068 | || (sym_type == STT_SECTION | |
13069 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13070 | { |
727fc41e AM |
13071 | if (tls_mask != 0 |
13072 | && (r_type == R_PPC64_TLS | |
13073 | || r_type == R_PPC64_TLSGD | |
13074 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13075 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13076 | ; | |
13077 | else | |
25f53a85 | 13078 | info->callbacks->einfo |
1d483afe | 13079 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13080 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13081 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13082 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13083 | ppc64_elf_howto_table[r_type]->name, |
13084 | sym_name); | |
411e1bfb AM |
13085 | } |
13086 | ||
13087 | /* Ensure reloc mapping code below stays sane. */ | |
13088 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13089 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13090 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13091 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13092 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13093 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13094 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13095 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13096 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13097 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13098 | abort (); | |
0d4792f7 | 13099 | |
411e1bfb AM |
13100 | switch (r_type) |
13101 | { | |
13102 | default: | |
411e1bfb AM |
13103 | break; |
13104 | ||
ba761f19 AM |
13105 | case R_PPC64_LO_DS_OPT: |
13106 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13107 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13108 | abort (); | |
13109 | insn += (14u << 26) - (58u << 26); | |
13110 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13111 | r_type = R_PPC64_TOC16_LO; | |
13112 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13113 | break; | |
13114 | ||
411e1bfb AM |
13115 | case R_PPC64_TOC16: |
13116 | case R_PPC64_TOC16_LO: | |
13117 | case R_PPC64_TOC16_DS: | |
13118 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13119 | { |
13120 | /* Check for toc tls entries. */ | |
f961d9dd | 13121 | unsigned char *toc_tls; |
951fd09b | 13122 | int retval; |
411e1bfb | 13123 | |
3a71aa26 AM |
13124 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13125 | &local_syms, rel, input_bfd); | |
951fd09b | 13126 | if (retval == 0) |
411e1bfb AM |
13127 | return FALSE; |
13128 | ||
13129 | if (toc_tls) | |
13130 | { | |
951fd09b | 13131 | tls_mask = *toc_tls; |
411e1bfb AM |
13132 | if (r_type == R_PPC64_TOC16_DS |
13133 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13134 | { |
13135 | if (tls_mask != 0 | |
13136 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13137 | goto toctprel; | |
13138 | } | |
411e1bfb | 13139 | else |
951fd09b AM |
13140 | { |
13141 | /* If we found a GD reloc pair, then we might be | |
13142 | doing a GD->IE transition. */ | |
13143 | if (retval == 2) | |
13144 | { | |
13145 | tls_gd = TLS_TPRELGD; | |
13146 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13147 | goto tls_ldgd_opt; |
951fd09b AM |
13148 | } |
13149 | else if (retval == 3) | |
13150 | { | |
13151 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13152 | goto tls_ldgd_opt; |
951fd09b AM |
13153 | } |
13154 | } | |
411e1bfb AM |
13155 | } |
13156 | } | |
13157 | break; | |
13158 | ||
9d6ded02 AM |
13159 | case R_PPC64_GOT_TPREL16_HI: |
13160 | case R_PPC64_GOT_TPREL16_HA: | |
13161 | if (tls_mask != 0 | |
13162 | && (tls_mask & TLS_TPREL) == 0) | |
13163 | { | |
13164 | rel->r_offset -= d_offset; | |
13165 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13166 | r_type = R_PPC64_NONE; | |
13167 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13168 | } | |
13169 | break; | |
13170 | ||
411e1bfb AM |
13171 | case R_PPC64_GOT_TPREL16_DS: |
13172 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13173 | if (tls_mask != 0 |
13174 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13175 | { |
81407a69 | 13176 | toctprel: |
4fe5ca5b | 13177 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13178 | insn &= 31 << 21; |
13179 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13180 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13181 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13182 | if (toc_symndx != 0) |
13183 | { | |
13184 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13185 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13186 | /* We changed the symbol. Start over in order to |
13187 | get h, sym, sec etc. right. */ | |
13188 | rel--; | |
13189 | continue; | |
13190 | } | |
13191 | else | |
13192 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13193 | } |
13194 | break; | |
13195 | ||
13196 | case R_PPC64_TLS: | |
951fd09b AM |
13197 | if (tls_mask != 0 |
13198 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13199 | { |
411e1bfb | 13200 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13201 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13202 | if (insn == 0) | |
411e1bfb | 13203 | abort (); |
411e1bfb | 13204 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13205 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13206 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13207 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13208 | r_type = R_PPC64_TPREL16_LO; |
13209 | if (toc_symndx != 0) | |
13210 | { | |
13211 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13212 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13213 | /* We changed the symbol. Start over in order to |
13214 | get h, sym, sec etc. right. */ | |
13215 | rel--; | |
13216 | continue; | |
13217 | } | |
13218 | else | |
13219 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13220 | } |
13221 | break; | |
13222 | ||
411e1bfb AM |
13223 | case R_PPC64_GOT_TLSGD16_HI: |
13224 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13225 | tls_gd = TLS_TPRELGD; |
13226 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13227 | goto tls_gdld_hi; | |
13228 | break; | |
13229 | ||
411e1bfb AM |
13230 | case R_PPC64_GOT_TLSLD16_HI: |
13231 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13232 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13233 | { |
951fd09b AM |
13234 | tls_gdld_hi: |
13235 | if ((tls_mask & tls_gd) != 0) | |
13236 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13237 | + R_PPC64_GOT_TPREL16_DS); | |
13238 | else | |
411e1bfb | 13239 | { |
4fe5ca5b | 13240 | rel->r_offset -= d_offset; |
727ac201 | 13241 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13242 | r_type = R_PPC64_NONE; |
411e1bfb | 13243 | } |
951fd09b | 13244 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13245 | } |
13246 | break; | |
13247 | ||
951fd09b AM |
13248 | case R_PPC64_GOT_TLSGD16: |
13249 | case R_PPC64_GOT_TLSGD16_LO: | |
13250 | tls_gd = TLS_TPRELGD; | |
13251 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13252 | goto tls_ldgd_opt; |
951fd09b | 13253 | break; |
411e1bfb | 13254 | |
951fd09b AM |
13255 | case R_PPC64_GOT_TLSLD16: |
13256 | case R_PPC64_GOT_TLSLD16_LO: | |
13257 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13258 | { | |
3a71aa26 | 13259 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13260 | bfd_vma offset; |
13261 | ||
13262 | tls_ldgd_opt: | |
727fc41e AM |
13263 | offset = (bfd_vma) -1; |
13264 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13265 | __tls_get_addr calls, we must trust that the call | |
13266 | stays with its arg setup insns, ie. that the next | |
13267 | reloc is the __tls_get_addr call associated with | |
13268 | the current reloc. Edit both insns. */ | |
13269 | if (input_section->has_tls_get_addr_call | |
13270 | && rel + 1 < relend | |
13271 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13272 | htab->tls_get_addr, | |
13273 | htab->tls_get_addr_fd)) | |
13274 | offset = rel[1].r_offset; | |
102890f0 | 13275 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13276 | { |
102890f0 | 13277 | /* IE */ |
3a71aa26 AM |
13278 | insn1 = bfd_get_32 (output_bfd, |
13279 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
13280 | insn1 &= (1 << 26) - (1 << 2); |
13281 | insn1 |= 58 << 26; /* ld */ | |
13282 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13283 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13284 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13285 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13286 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13287 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13288 | else |
102890f0 AM |
13289 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13290 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13291 | } | |
13292 | else | |
13293 | { | |
13294 | /* LE */ | |
13295 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
13296 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13297 | if (tls_gd == 0) | |
951fd09b | 13298 | { |
102890f0 | 13299 | /* Was an LD reloc. */ |
1d483afe AM |
13300 | if (toc_symndx) |
13301 | sec = local_sections[toc_symndx]; | |
13302 | for (r_symndx = 0; | |
13303 | r_symndx < symtab_hdr->sh_info; | |
13304 | r_symndx++) | |
13305 | if (local_sections[r_symndx] == sec) | |
13306 | break; | |
13307 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13308 | r_symndx = STN_UNDEF; |
102890f0 | 13309 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13310 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13311 | rel->r_addend -= (local_syms[r_symndx].st_value |
13312 | + sec->output_offset | |
13313 | + sec->output_section->vma); | |
951fd09b | 13314 | } |
102890f0 | 13315 | else if (toc_symndx != 0) |
3a71aa26 AM |
13316 | { |
13317 | r_symndx = toc_symndx; | |
13318 | rel->r_addend = toc_addend; | |
13319 | } | |
102890f0 AM |
13320 | r_type = R_PPC64_TPREL16_HA; |
13321 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13322 | if (offset != (bfd_vma) -1) |
13323 | { | |
13324 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13325 | R_PPC64_TPREL16_LO); | |
13326 | rel[1].r_offset = offset + d_offset; | |
13327 | rel[1].r_addend = rel->r_addend; | |
13328 | } | |
102890f0 | 13329 | } |
3a71aa26 AM |
13330 | bfd_put_32 (output_bfd, insn1, |
13331 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13332 | if (offset != (bfd_vma) -1) |
13333 | { | |
13334 | insn3 = bfd_get_32 (output_bfd, | |
13335 | contents + offset + 4); | |
13336 | if (insn3 == NOP | |
13337 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13338 | { | |
13339 | rel[1].r_offset += 4; | |
13340 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13341 | insn2 = NOP; | |
13342 | } | |
13343 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13344 | } | |
13345 | if ((tls_mask & tls_gd) == 0 | |
13346 | && (tls_gd == 0 || toc_symndx != 0)) | |
13347 | { | |
13348 | /* We changed the symbol. Start over in order | |
13349 | to get h, sym, sec etc. right. */ | |
13350 | rel--; | |
13351 | continue; | |
13352 | } | |
13353 | } | |
13354 | break; | |
13355 | ||
13356 | case R_PPC64_TLSGD: | |
13357 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13358 | { | |
13359 | unsigned int insn2, insn3; | |
13360 | bfd_vma offset = rel->r_offset; | |
13361 | ||
13362 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13363 | { | |
13364 | /* IE */ | |
13365 | r_type = R_PPC64_NONE; | |
13366 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13367 | } | |
13368 | else | |
13369 | { | |
13370 | /* LE */ | |
13371 | if (toc_symndx != 0) | |
13372 | { | |
13373 | r_symndx = toc_symndx; | |
13374 | rel->r_addend = toc_addend; | |
13375 | } | |
13376 | r_type = R_PPC64_TPREL16_LO; | |
13377 | rel->r_offset = offset + d_offset; | |
13378 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13379 | } | |
13380 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13381 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13382 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13383 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13384 | insn3 = bfd_get_32 (output_bfd, |
13385 | contents + offset + 4); | |
102890f0 AM |
13386 | if (insn3 == NOP |
13387 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13388 | { | |
727fc41e | 13389 | rel->r_offset += 4; |
3a71aa26 AM |
13390 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13391 | insn2 = NOP; | |
102890f0 | 13392 | } |
102890f0 | 13393 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13394 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13395 | { |
102890f0 AM |
13396 | rel--; |
13397 | continue; | |
411e1bfb | 13398 | } |
411e1bfb | 13399 | } |
411e1bfb AM |
13400 | break; |
13401 | ||
727fc41e AM |
13402 | case R_PPC64_TLSLD: |
13403 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13404 | { | |
13405 | unsigned int insn2, insn3; | |
13406 | bfd_vma offset = rel->r_offset; | |
13407 | ||
13408 | if (toc_symndx) | |
13409 | sec = local_sections[toc_symndx]; | |
13410 | for (r_symndx = 0; | |
13411 | r_symndx < symtab_hdr->sh_info; | |
13412 | r_symndx++) | |
13413 | if (local_sections[r_symndx] == sec) | |
13414 | break; | |
13415 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13416 | r_symndx = STN_UNDEF; |
727fc41e | 13417 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13418 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13419 | rel->r_addend -= (local_syms[r_symndx].st_value |
13420 | + sec->output_offset | |
13421 | + sec->output_section->vma); | |
13422 | ||
13423 | r_type = R_PPC64_TPREL16_LO; | |
13424 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13425 | rel->r_offset = offset + d_offset; | |
13426 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13427 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13428 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13429 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13430 | insn3 = bfd_get_32 (output_bfd, | |
13431 | contents + offset + 4); | |
13432 | if (insn3 == NOP | |
13433 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13434 | { | |
13435 | rel->r_offset += 4; | |
13436 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13437 | insn2 = NOP; | |
13438 | } | |
13439 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13440 | rel--; | |
13441 | continue; | |
13442 | } | |
13443 | break; | |
13444 | ||
411e1bfb | 13445 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13446 | if (rel + 1 < relend |
13447 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13448 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13449 | { |
951fd09b AM |
13450 | if ((tls_mask & TLS_GD) == 0) |
13451 | { | |
13452 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13453 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13454 | r_type = R_PPC64_TPREL64; | |
13455 | else | |
13456 | { | |
4ce794b7 | 13457 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13458 | r_type = R_PPC64_NONE; |
13459 | } | |
13460 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13461 | } | |
13462 | } | |
13463 | else | |
13464 | { | |
13465 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13466 | { |
4ce794b7 | 13467 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13468 | r_type = R_PPC64_NONE; |
951fd09b | 13469 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13470 | } |
411e1bfb AM |
13471 | } |
13472 | break; | |
13473 | ||
13474 | case R_PPC64_TPREL64: | |
951fd09b | 13475 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13476 | { |
13477 | r_type = R_PPC64_NONE; | |
13478 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13479 | } | |
13480 | break; | |
52a82034 AM |
13481 | |
13482 | case R_PPC64_REL16_HA: | |
13483 | /* If we are generating a non-PIC executable, edit | |
13484 | . 0: addis 2,12,.TOC.-0b@ha | |
13485 | . addi 2,2,.TOC.-0b@l | |
13486 | used by ELFv2 global entry points to set up r2, to | |
13487 | . lis 2,.TOC.@ha | |
13488 | . addi 2,2,.TOC.@l | |
13489 | if .TOC. is in range. */ | |
13490 | if (!info->shared | |
13491 | && h != NULL && &h->elf == htab->elf.hgot | |
13492 | && rel + 1 < relend | |
13493 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13494 | && rel[1].r_offset == rel->r_offset + 4 | |
13495 | && rel[1].r_addend == rel->r_addend + 4 | |
13496 | && relocation + 0x80008000 <= 0xffffffff) | |
13497 | { | |
13498 | unsigned int insn1, insn2; | |
13499 | bfd_vma offset = rel->r_offset - d_offset; | |
13500 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13501 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13502 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13503 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13504 | { | |
13505 | r_type = R_PPC64_ADDR16_HA; | |
13506 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13507 | rel->r_addend -= d_offset; | |
13508 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13509 | rel[1].r_addend -= d_offset + 4; | |
13510 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13511 | } | |
13512 | } | |
13513 | break; | |
411e1bfb AM |
13514 | } |
13515 | ||
13516 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13517 | insn = 0; |
b25116a9 AM |
13518 | max_br_offset = 1 << 25; |
13519 | addend = rel->r_addend; | |
bc30df16 | 13520 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13521 | switch (r_type) |
5bd4f169 AM |
13522 | { |
13523 | default: | |
65f38f15 | 13524 | break; |
5bd4f169 | 13525 | |
3b421ab3 AM |
13526 | case R_PPC64_TOCSAVE: |
13527 | if (relocation + addend == (rel->r_offset | |
13528 | + input_section->output_offset | |
13529 | + input_section->output_section->vma) | |
13530 | && tocsave_find (htab, NO_INSERT, | |
13531 | &local_syms, rel, input_bfd)) | |
13532 | { | |
13533 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13534 | if (insn == NOP | |
13535 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13536 | bfd_put_32 (input_bfd, |
13537 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13538 | contents + rel->r_offset); |
13539 | } | |
13540 | break; | |
13541 | ||
65f38f15 AM |
13542 | /* Branch taken prediction relocations. */ |
13543 | case R_PPC64_ADDR14_BRTAKEN: | |
13544 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13545 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13546 | /* Fall thru. */ | |
65f38f15 | 13547 | |
86c76c7b | 13548 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13549 | case R_PPC64_ADDR14_BRNTAKEN: |
13550 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13551 | insn |= bfd_get_32 (output_bfd, |
13552 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13553 | /* Fall thru. */ |
86c76c7b | 13554 | |
b25116a9 AM |
13555 | case R_PPC64_REL14: |
13556 | max_br_offset = 1 << 15; | |
13557 | /* Fall thru. */ | |
5bd4f169 | 13558 | |
65f38f15 | 13559 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13560 | /* Calls to functions with a different TOC, such as calls to |
13561 | shared objects, need to alter the TOC pointer. This is | |
13562 | done using a linkage stub. A REL24 branching to these | |
13563 | linkage stubs needs to be followed by a nop, as the nop | |
13564 | will be replaced with an instruction to restore the TOC | |
13565 | base pointer. */ | |
8387904d | 13566 | fdh = h; |
b31867b6 AM |
13567 | if (h != NULL |
13568 | && h->oh != NULL | |
13569 | && h->oh->is_func_descriptor) | |
13570 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13571 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13572 | htab); | |
6abec6bc | 13573 | if (stub_entry != NULL |
ad8e1ba5 | 13574 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13575 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13576 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13577 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13578 | { |
b25116a9 | 13579 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13580 | |
ba8ca3e7 AM |
13581 | /* All of these stubs will modify r2, so there must be a |
13582 | branch and link followed by a nop. The nop is | |
13583 | replaced by an insn to restore r2. */ | |
eea6121a | 13584 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13585 | { |
ba8ca3e7 AM |
13586 | unsigned long br; |
13587 | ||
13588 | br = bfd_get_32 (input_bfd, | |
13589 | contents + rel->r_offset); | |
13590 | if ((br & 1) != 0) | |
41bd81ab | 13591 | { |
ba8ca3e7 AM |
13592 | unsigned long nop; |
13593 | ||
13594 | nop = bfd_get_32 (input_bfd, | |
13595 | contents + rel->r_offset + 4); | |
13596 | if (nop == NOP | |
13597 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13598 | { |
ba8ca3e7 AM |
13599 | if (h != NULL |
13600 | && (h == htab->tls_get_addr_fd | |
13601 | || h == htab->tls_get_addr) | |
13602 | && !htab->no_tls_get_addr_opt) | |
13603 | { | |
13604 | /* Special stub used, leave nop alone. */ | |
13605 | } | |
13606 | else | |
a078d95a AM |
13607 | bfd_put_32 (input_bfd, |
13608 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13609 | contents + rel->r_offset + 4); |
13610 | can_plt_call = TRUE; | |
a7f2871e | 13611 | } |
41bd81ab | 13612 | } |
5bd4f169 | 13613 | } |
721956f4 | 13614 | |
ba8ca3e7 | 13615 | if (!can_plt_call && h != NULL) |
721956f4 | 13616 | { |
ba8ca3e7 AM |
13617 | const char *name = h->elf.root.root.string; |
13618 | ||
13619 | if (*name == '.') | |
13620 | ++name; | |
13621 | ||
13622 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13623 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13624 | { |
ba8ca3e7 AM |
13625 | /* Allow crt1 branch to go via a toc adjusting |
13626 | stub. Other calls that never return could do | |
13627 | the same, if we could detect such. */ | |
b25116a9 | 13628 | can_plt_call = TRUE; |
6ab189d5 | 13629 | } |
ba8ca3e7 AM |
13630 | } |
13631 | ||
13632 | if (!can_plt_call) | |
13633 | { | |
13634 | /* g++ as of 20130507 emits self-calls without a | |
13635 | following nop. This is arguably wrong since we | |
13636 | have conflicting information. On the one hand a | |
13637 | global symbol and on the other a local call | |
13638 | sequence, but don't error for this special case. | |
13639 | It isn't possible to cheaply verify we have | |
13640 | exactly such a call. Allow all calls to the same | |
13641 | section. */ | |
13642 | asection *code_sec = sec; | |
13643 | ||
13644 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13645 | { |
ba8ca3e7 AM |
13646 | bfd_vma off = (relocation + addend |
13647 | - sec->output_section->vma | |
13648 | - sec->output_offset); | |
bc30df16 | 13649 | |
ba8ca3e7 | 13650 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13651 | } |
ba8ca3e7 AM |
13652 | if (code_sec == input_section) |
13653 | can_plt_call = TRUE; | |
13654 | } | |
13655 | ||
13656 | if (!can_plt_call) | |
13657 | { | |
13658 | info->callbacks->einfo | |
13659 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13660 | "recompile with -fPIC"), | |
13661 | input_bfd, input_section, rel->r_offset, sym_name); | |
13662 | ||
13663 | bfd_set_error (bfd_error_bad_value); | |
13664 | ret = FALSE; | |
721956f4 AM |
13665 | } |
13666 | ||
b25116a9 | 13667 | if (can_plt_call |
794e51c0 AM |
13668 | && (stub_entry->stub_type == ppc_stub_plt_call |
13669 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13670 | unresolved_reloc = FALSE; |
13671 | } | |
13672 | ||
6abec6bc AM |
13673 | if ((stub_entry == NULL |
13674 | || stub_entry->stub_type == ppc_stub_long_branch | |
13675 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13676 | && get_opd_info (sec) != NULL) |
13677 | { | |
13678 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13679 | bfd_vma off = (relocation + addend |
13680 | - sec->output_section->vma | |
13681 | - sec->output_offset); | |
aef36ac1 | 13682 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13683 | if (dest != (bfd_vma) -1) |
13684 | { | |
13685 | relocation = dest; | |
13686 | addend = 0; | |
bc30df16 | 13687 | reloc_dest = DEST_OPD; |
8387904d AM |
13688 | } |
13689 | } | |
13690 | ||
b25116a9 AM |
13691 | /* If the branch is out of reach we ought to have a long |
13692 | branch stub. */ | |
13693 | from = (rel->r_offset | |
13694 | + input_section->output_offset | |
13695 | + input_section->output_section->vma); | |
13696 | ||
6911b7dc AM |
13697 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
13698 | ? fdh->elf.other | |
13699 | : sym->st_other); | |
13700 | ||
6abec6bc AM |
13701 | if (stub_entry != NULL |
13702 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13703 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13704 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13705 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13706 | || (relocation + addend - from + max_br_offset | |
13707 | < 2 * max_br_offset))) | |
13708 | /* Don't use the stub if this branch is in range. */ | |
13709 | stub_entry = NULL; | |
b25116a9 AM |
13710 | |
13711 | if (stub_entry != NULL) | |
13712 | { | |
13713 | /* Munge up the value and addend so that we call the stub | |
13714 | rather than the procedure directly. */ | |
13715 | relocation = (stub_entry->stub_offset | |
13716 | + stub_entry->stub_sec->output_offset | |
13717 | + stub_entry->stub_sec->output_section->vma); | |
13718 | addend = 0; | |
bc30df16 | 13719 | reloc_dest = DEST_STUB; |
3b421ab3 | 13720 | |
794e51c0 AM |
13721 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13722 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13723 | && (ALWAYS_EMIT_R2SAVE | |
13724 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13725 | && rel + 1 < relend |
13726 | && rel[1].r_offset == rel->r_offset + 4 | |
13727 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13728 | relocation += 4; | |
b25116a9 AM |
13729 | } |
13730 | ||
13731 | if (insn != 0) | |
13732 | { | |
794e51c0 | 13733 | if (is_isa_v2) |
721956f4 | 13734 | { |
b25116a9 AM |
13735 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13736 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13737 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13738 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13739 | insn |= 0x02 << 21; | |
13740 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13741 | insn |= 0x08 << 21; | |
13742 | else | |
13743 | break; | |
13744 | } | |
13745 | else | |
13746 | { | |
13747 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13748 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13749 | insn ^= 0x01 << 21; |
721956f4 | 13750 | } |
b25116a9 AM |
13751 | |
13752 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13753 | } |
e86ce104 | 13754 | |
06da1e8e AM |
13755 | /* NOP out calls to undefined weak functions. |
13756 | We can thus call a weak function without first | |
13757 | checking whether the function is defined. */ | |
b25116a9 | 13758 | else if (h != NULL |
039b3fef | 13759 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13760 | && h->elf.dynindx == -1 |
b25116a9 AM |
13761 | && r_type == R_PPC64_REL24 |
13762 | && relocation == 0 | |
4cc603a5 | 13763 | && addend == 0) |
e86ce104 | 13764 | { |
06da1e8e AM |
13765 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13766 | continue; | |
e86ce104 | 13767 | } |
65f38f15 AM |
13768 | break; |
13769 | } | |
5bd4f169 | 13770 | |
65f38f15 | 13771 | /* Set `addend'. */ |
411e1bfb | 13772 | tls_type = 0; |
65f38f15 AM |
13773 | switch (r_type) |
13774 | { | |
13775 | default: | |
25f53a85 | 13776 | info->callbacks->einfo |
bc30df16 | 13777 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13778 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13779 | |
65f38f15 | 13780 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13781 | ret = FALSE; |
65f38f15 | 13782 | continue; |
5bd4f169 | 13783 | |
65f38f15 | 13784 | case R_PPC64_NONE: |
411e1bfb | 13785 | case R_PPC64_TLS: |
727fc41e AM |
13786 | case R_PPC64_TLSGD: |
13787 | case R_PPC64_TLSLD: | |
3b421ab3 | 13788 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13789 | case R_PPC64_GNU_VTINHERIT: |
13790 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13791 | continue; |
5bd4f169 AM |
13792 | |
13793 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13794 | address in the GOT as relocation value instead of the | |
411e1bfb | 13795 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13796 | symbol and put the symbol value there. */ |
411e1bfb AM |
13797 | case R_PPC64_GOT_TLSGD16: |
13798 | case R_PPC64_GOT_TLSGD16_LO: | |
13799 | case R_PPC64_GOT_TLSGD16_HI: | |
13800 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13801 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13802 | goto dogot; |
13803 | ||
13804 | case R_PPC64_GOT_TLSLD16: | |
13805 | case R_PPC64_GOT_TLSLD16_LO: | |
13806 | case R_PPC64_GOT_TLSLD16_HI: | |
13807 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13808 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13809 | goto dogot; |
13810 | ||
13811 | case R_PPC64_GOT_TPREL16_DS: | |
13812 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13813 | case R_PPC64_GOT_TPREL16_HI: | |
13814 | case R_PPC64_GOT_TPREL16_HA: | |
13815 | tls_type = TLS_TLS | TLS_TPREL; | |
13816 | goto dogot; | |
13817 | ||
13818 | case R_PPC64_GOT_DTPREL16_DS: | |
13819 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13820 | case R_PPC64_GOT_DTPREL16_HI: | |
13821 | case R_PPC64_GOT_DTPREL16_HA: | |
13822 | tls_type = TLS_TLS | TLS_DTPREL; | |
13823 | goto dogot; | |
13824 | ||
65f38f15 AM |
13825 | case R_PPC64_GOT16: |
13826 | case R_PPC64_GOT16_LO: | |
13827 | case R_PPC64_GOT16_HI: | |
13828 | case R_PPC64_GOT16_HA: | |
13829 | case R_PPC64_GOT16_DS: | |
13830 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13831 | dogot: |
5bd4f169 AM |
13832 | { |
13833 | /* Relocation is to the entry for this symbol in the global | |
13834 | offset table. */ | |
e717da7e | 13835 | asection *got; |
d881513a | 13836 | bfd_vma *offp; |
5bd4f169 | 13837 | bfd_vma off; |
d881513a | 13838 | unsigned long indx = 0; |
927be08e | 13839 | struct got_entry *ent; |
65f38f15 | 13840 | |
d881513a AM |
13841 | if (tls_type == (TLS_TLS | TLS_LD) |
13842 | && (h == NULL | |
f5385ebf | 13843 | || !h->elf.def_dynamic)) |
927be08e | 13844 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13845 | else |
5bd4f169 | 13846 | { |
5bd4f169 | 13847 | |
d881513a AM |
13848 | if (h != NULL) |
13849 | { | |
13850 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13851 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13852 | &h->elf) | |
d881513a | 13853 | || (info->shared |
afe397ea | 13854 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
13855 | /* This is actually a static link, or it is a |
13856 | -Bsymbolic link and the symbol is defined | |
13857 | locally, or the symbol was forced to be local | |
13858 | because of a version file. */ | |
13859 | ; | |
13860 | else | |
13861 | { | |
14acf4dc | 13862 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13863 | indx = h->elf.dynindx; |
d881513a AM |
13864 | unresolved_reloc = FALSE; |
13865 | } | |
039b3fef | 13866 | ent = h->elf.got.glist; |
d881513a | 13867 | } |
411e1bfb | 13868 | else |
5bd4f169 | 13869 | { |
d881513a AM |
13870 | if (local_got_ents == NULL) |
13871 | abort (); | |
13872 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 13873 | } |
d881513a AM |
13874 | |
13875 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 13876 | if (ent->addend == orig_rel.r_addend |
e717da7e | 13877 | && ent->owner == input_bfd |
d881513a AM |
13878 | && ent->tls_type == tls_type) |
13879 | break; | |
5bd4f169 | 13880 | } |
411e1bfb | 13881 | |
927be08e AM |
13882 | if (ent == NULL) |
13883 | abort (); | |
13884 | if (ent->is_indirect) | |
13885 | ent = ent->got.ent; | |
13886 | offp = &ent->got.offset; | |
13887 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
13888 | if (got == NULL) |
13889 | abort (); | |
13890 | ||
411e1bfb AM |
13891 | /* The offset must always be a multiple of 8. We use the |
13892 | least significant bit to record whether we have already | |
13893 | processed this entry. */ | |
d881513a | 13894 | off = *offp; |
411e1bfb AM |
13895 | if ((off & 1) != 0) |
13896 | off &= ~1; | |
5bd4f169 AM |
13897 | else |
13898 | { | |
411e1bfb AM |
13899 | /* Generate relocs for the dynamic linker, except in |
13900 | the case of TLSLD where we'll use one entry per | |
13901 | module. */ | |
25f23106 AM |
13902 | asection *relgot; |
13903 | bfd_boolean ifunc; | |
e717da7e | 13904 | |
d881513a | 13905 | *offp = off | 1; |
25f23106 AM |
13906 | relgot = NULL; |
13907 | ifunc = (h != NULL | |
13908 | ? h->elf.type == STT_GNU_IFUNC | |
13909 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 13910 | if (ifunc) |
33e44f2e | 13911 | relgot = htab->elf.irelplt; |
19e08130 AM |
13912 | else if ((info->shared || indx != 0) |
13913 | && (h == NULL | |
13914 | || (tls_type == (TLS_TLS | TLS_LD) | |
13915 | && !h->elf.def_dynamic) | |
13916 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
13917 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
13918 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 13919 | if (relgot != NULL) |
5bd4f169 | 13920 | { |
e717da7e AM |
13921 | outrel.r_offset = (got->output_section->vma |
13922 | + got->output_offset | |
411e1bfb | 13923 | + off); |
4cc603a5 | 13924 | outrel.r_addend = addend; |
d881513a | 13925 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 13926 | { |
411e1bfb | 13927 | outrel.r_addend = 0; |
e515b051 | 13928 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
13929 | if (tls_type == (TLS_TLS | TLS_GD)) |
13930 | { | |
e717da7e AM |
13931 | loc = relgot->contents; |
13932 | loc += (relgot->reloc_count++ | |
d881513a AM |
13933 | * sizeof (Elf64_External_Rela)); |
13934 | bfd_elf64_swap_reloca_out (output_bfd, | |
13935 | &outrel, loc); | |
e515b051 | 13936 | outrel.r_offset += 8; |
4cc603a5 | 13937 | outrel.r_addend = addend; |
d881513a AM |
13938 | outrel.r_info |
13939 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 13940 | } |
411e1bfb | 13941 | } |
951fd09b | 13942 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 13943 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 13944 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13945 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
13946 | else if (indx != 0) |
13947 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
13948 | else | |
81407a69 | 13949 | { |
25f23106 AM |
13950 | if (ifunc) |
13951 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13952 | else | |
13953 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
13954 | |
13955 | /* Write the .got section contents for the sake | |
13956 | of prelink. */ | |
e717da7e | 13957 | loc = got->contents + off; |
23fbd6fa JJ |
13958 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
13959 | loc); | |
81407a69 | 13960 | } |
81407a69 AM |
13961 | |
13962 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
13963 | { |
13964 | outrel.r_addend += relocation; | |
13965 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 13966 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 13967 | } |
e717da7e AM |
13968 | loc = relgot->contents; |
13969 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
13970 | * sizeof (Elf64_External_Rela)); |
13971 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
13972 | } | |
13973 | ||
ad8e1ba5 | 13974 | /* Init the .got section contents here if we're not |
81407a69 | 13975 | emitting a reloc. */ |
d881513a | 13976 | else |
411e1bfb | 13977 | { |
4cc603a5 | 13978 | relocation += addend; |
7b609f53 AM |
13979 | if (tls_type == (TLS_TLS | TLS_LD)) |
13980 | relocation = 1; | |
13981 | else if (tls_type != 0) | |
411e1bfb | 13982 | { |
e1918d23 | 13983 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 13984 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13985 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 13986 | |
7b609f53 AM |
13987 | if (tls_type == (TLS_TLS | TLS_GD)) |
13988 | { | |
13989 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 13990 | got->contents + off + 8); |
7b609f53 AM |
13991 | relocation = 1; |
13992 | } | |
411e1bfb | 13993 | } |
7b609f53 | 13994 | |
411e1bfb | 13995 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 13996 | got->contents + off); |
5bd4f169 AM |
13997 | } |
13998 | } | |
13999 | ||
65f38f15 AM |
14000 | if (off >= (bfd_vma) -2) |
14001 | abort (); | |
14002 | ||
bf102f86 AM |
14003 | relocation = got->output_section->vma + got->output_offset + off; |
14004 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 14005 | } |
65f38f15 AM |
14006 | break; |
14007 | ||
14008 | case R_PPC64_PLT16_HA: | |
14009 | case R_PPC64_PLT16_HI: | |
14010 | case R_PPC64_PLT16_LO: | |
14011 | case R_PPC64_PLT32: | |
14012 | case R_PPC64_PLT64: | |
14013 | /* Relocation is to the entry for this symbol in the | |
14014 | procedure linkage table. */ | |
14015 | ||
14016 | /* Resolve a PLT reloc against a local symbol directly, | |
14017 | without using the procedure linkage table. */ | |
14018 | if (h == NULL) | |
14019 | break; | |
14020 | ||
411e1bfb AM |
14021 | /* It's possible that we didn't make a PLT entry for this |
14022 | symbol. This happens when statically linking PIC code, | |
14023 | or when using -Bsymbolic. Go find a match if there is a | |
14024 | PLT entry. */ | |
33e44f2e | 14025 | if (htab->elf.splt != NULL) |
65f38f15 | 14026 | { |
411e1bfb | 14027 | struct plt_entry *ent; |
039b3fef | 14028 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14029 | if (ent->plt.offset != (bfd_vma) -1 |
14030 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14031 | { |
33e44f2e AM |
14032 | relocation = (htab->elf.splt->output_section->vma |
14033 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14034 | + ent->plt.offset); |
14035 | unresolved_reloc = FALSE; | |
a345bc8d | 14036 | break; |
411e1bfb | 14037 | } |
65f38f15 | 14038 | } |
65f38f15 | 14039 | break; |
5bd4f169 | 14040 | |
0b13192e AM |
14041 | case R_PPC64_TOC: |
14042 | /* Relocation value is TOC base. */ | |
14043 | relocation = TOCstart; | |
cf35638d | 14044 | if (r_symndx == STN_UNDEF) |
0b13192e | 14045 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
14046 | else if (unresolved_reloc) |
14047 | ; | |
14048 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
14049 | relocation += htab->stub_group[sec->id].toc_off; |
14050 | else | |
14051 | unresolved_reloc = TRUE; | |
ab96bf03 | 14052 | goto dodyn; |
0b13192e | 14053 | |
5bd4f169 AM |
14054 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14055 | which is the address of the start of the TOC plus 0x8000. | |
14056 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14057 | in this order. */ | |
65f38f15 AM |
14058 | case R_PPC64_TOC16: |
14059 | case R_PPC64_TOC16_LO: | |
14060 | case R_PPC64_TOC16_HI: | |
14061 | case R_PPC64_TOC16_DS: | |
14062 | case R_PPC64_TOC16_LO_DS: | |
14063 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 14064 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
14065 | break; |
14066 | ||
14067 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14068 | case R_PPC64_SECTOFF: |
14069 | case R_PPC64_SECTOFF_LO: | |
14070 | case R_PPC64_SECTOFF_HI: | |
14071 | case R_PPC64_SECTOFF_DS: | |
14072 | case R_PPC64_SECTOFF_LO_DS: | |
14073 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14074 | if (sec != NULL) |
65f38f15 | 14075 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14076 | break; |
14077 | ||
25f23106 AM |
14078 | case R_PPC64_REL16: |
14079 | case R_PPC64_REL16_LO: | |
14080 | case R_PPC64_REL16_HI: | |
14081 | case R_PPC64_REL16_HA: | |
14082 | break; | |
14083 | ||
721956f4 AM |
14084 | case R_PPC64_REL14: |
14085 | case R_PPC64_REL14_BRNTAKEN: | |
14086 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14087 | case R_PPC64_REL24: |
14088 | break; | |
14089 | ||
411e1bfb AM |
14090 | case R_PPC64_TPREL16: |
14091 | case R_PPC64_TPREL16_LO: | |
14092 | case R_PPC64_TPREL16_HI: | |
14093 | case R_PPC64_TPREL16_HA: | |
14094 | case R_PPC64_TPREL16_DS: | |
14095 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14096 | case R_PPC64_TPREL16_HIGH: |
14097 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14098 | case R_PPC64_TPREL16_HIGHER: |
14099 | case R_PPC64_TPREL16_HIGHERA: | |
14100 | case R_PPC64_TPREL16_HIGHEST: | |
14101 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14102 | if (h != NULL |
14103 | && h->elf.root.type == bfd_link_hash_undefweak | |
14104 | && h->elf.dynindx == -1) | |
14105 | { | |
14106 | /* Make this relocation against an undefined weak symbol | |
14107 | resolve to zero. This is really just a tweak, since | |
14108 | code using weak externs ought to check that they are | |
14109 | defined before using them. */ | |
14110 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14111 | ||
14112 | insn = bfd_get_32 (output_bfd, p); | |
14113 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14114 | if (insn != 0) | |
14115 | bfd_put_32 (output_bfd, insn, p); | |
14116 | break; | |
14117 | } | |
e1918d23 | 14118 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14119 | if (info->shared) |
14120 | /* The TPREL16 relocs shouldn't really be used in shared | |
14121 | libs as they will result in DT_TEXTREL being set, but | |
14122 | support them anyway. */ | |
14123 | goto dodyn; | |
14124 | break; | |
14125 | ||
14126 | case R_PPC64_DTPREL16: | |
14127 | case R_PPC64_DTPREL16_LO: | |
14128 | case R_PPC64_DTPREL16_HI: | |
14129 | case R_PPC64_DTPREL16_HA: | |
14130 | case R_PPC64_DTPREL16_DS: | |
14131 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14132 | case R_PPC64_DTPREL16_HIGH: |
14133 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14134 | case R_PPC64_DTPREL16_HIGHER: |
14135 | case R_PPC64_DTPREL16_HIGHERA: | |
14136 | case R_PPC64_DTPREL16_HIGHEST: | |
14137 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 14138 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14139 | break; |
14140 | ||
e515b051 AM |
14141 | case R_PPC64_DTPMOD64: |
14142 | relocation = 1; | |
14143 | addend = 0; | |
14144 | goto dodyn; | |
14145 | ||
411e1bfb | 14146 | case R_PPC64_TPREL64: |
e1918d23 | 14147 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14148 | goto dodyn; |
14149 | ||
14150 | case R_PPC64_DTPREL64: | |
e1918d23 | 14151 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14152 | /* Fall thru */ |
14153 | ||
65f38f15 AM |
14154 | /* Relocations that may need to be propagated if this is a |
14155 | dynamic object. */ | |
04c9666a | 14156 | case R_PPC64_REL30: |
65f38f15 AM |
14157 | case R_PPC64_REL32: |
14158 | case R_PPC64_REL64: | |
14159 | case R_PPC64_ADDR14: | |
14160 | case R_PPC64_ADDR14_BRNTAKEN: | |
14161 | case R_PPC64_ADDR14_BRTAKEN: | |
14162 | case R_PPC64_ADDR16: | |
14163 | case R_PPC64_ADDR16_DS: | |
14164 | case R_PPC64_ADDR16_HA: | |
14165 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14166 | case R_PPC64_ADDR16_HIGH: |
14167 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14168 | case R_PPC64_ADDR16_HIGHER: |
14169 | case R_PPC64_ADDR16_HIGHERA: | |
14170 | case R_PPC64_ADDR16_HIGHEST: | |
14171 | case R_PPC64_ADDR16_HIGHESTA: | |
14172 | case R_PPC64_ADDR16_LO: | |
14173 | case R_PPC64_ADDR16_LO_DS: | |
14174 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14175 | case R_PPC64_ADDR32: |
14176 | case R_PPC64_ADDR64: | |
14177 | case R_PPC64_UADDR16: | |
14178 | case R_PPC64_UADDR32: | |
14179 | case R_PPC64_UADDR64: | |
411e1bfb | 14180 | dodyn: |
5d1634d7 | 14181 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14182 | break; |
14183 | ||
41bd81ab AM |
14184 | if (NO_OPD_RELOCS && is_opd) |
14185 | break; | |
14186 | ||
65f38f15 | 14187 | if ((info->shared |
4e795f50 | 14188 | && (h == NULL |
039b3fef AM |
14189 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14190 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14191 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14192 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
14193 | || (ELIMINATE_COPY_RELOCS |
14194 | && !info->shared | |
65f38f15 | 14195 | && h != NULL |
039b3fef | 14196 | && h->elf.dynindx != -1 |
f5385ebf | 14197 | && !h->elf.non_got_ref |
25f23106 AM |
14198 | && !h->elf.def_regular) |
14199 | || (!info->shared | |
14200 | && (h != NULL | |
14201 | ? h->elf.type == STT_GNU_IFUNC | |
14202 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14203 | { |
b34976b6 | 14204 | bfd_boolean skip, relocate; |
65f38f15 | 14205 | asection *sreloc; |
1cf1f670 | 14206 | bfd_vma out_off; |
65f38f15 AM |
14207 | |
14208 | /* When generating a dynamic object, these relocations | |
14209 | are copied into the output file to be resolved at run | |
14210 | time. */ | |
14211 | ||
b34976b6 AM |
14212 | skip = FALSE; |
14213 | relocate = FALSE; | |
65f38f15 | 14214 | |
1cf1f670 AM |
14215 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14216 | input_section, rel->r_offset); | |
14217 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14218 | skip = TRUE; |
1cf1f670 | 14219 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14220 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14221 | out_off += (input_section->output_section->vma |
14222 | + input_section->output_offset); | |
14223 | outrel.r_offset = out_off; | |
411e1bfb | 14224 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14225 | |
1cf1f670 AM |
14226 | /* Optimize unaligned reloc use. */ |
14227 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14228 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14229 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14230 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14231 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14232 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14233 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14234 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14235 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14236 | ||
65f38f15 | 14237 | if (skip) |
0bb2d96a | 14238 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14239 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14240 | && !is_opd |
14241 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14242 | { |
14243 | BFD_ASSERT (h->elf.dynindx != -1); | |
14244 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14245 | } | |
65f38f15 AM |
14246 | else |
14247 | { | |
41bd81ab AM |
14248 | /* This symbol is local, or marked to become local, |
14249 | or this is an opd section reloc which must point | |
14250 | at a local function. */ | |
65f38f15 | 14251 | outrel.r_addend += relocation; |
e86ce104 | 14252 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14253 | { |
3fad3c7c | 14254 | if (is_opd && h != NULL) |
afbe61cf AM |
14255 | { |
14256 | /* Lie about opd entries. This case occurs | |
14257 | when building shared libraries and we | |
14258 | reference a function in another shared | |
3fad3c7c AM |
14259 | lib. The same thing happens for a weak |
14260 | definition in an application that's | |
14261 | overridden by a strong definition in a | |
14262 | shared lib. (I believe this is a generic | |
14263 | bug in binutils handling of weak syms.) | |
14264 | In these cases we won't use the opd | |
1e2f5b6e | 14265 | entry in this lib. */ |
b34976b6 | 14266 | unresolved_reloc = FALSE; |
afbe61cf | 14267 | } |
25f23106 AM |
14268 | if (!is_opd |
14269 | && r_type == R_PPC64_ADDR64 | |
14270 | && (h != NULL | |
14271 | ? h->elf.type == STT_GNU_IFUNC | |
14272 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14273 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14274 | else | |
14275 | { | |
14276 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14277 | |
25f23106 AM |
14278 | /* We need to relocate .opd contents for ld.so. |
14279 | Prelink also wants simple and consistent rules | |
14280 | for relocs. This make all RELATIVE relocs have | |
14281 | *r_offset equal to r_addend. */ | |
14282 | relocate = TRUE; | |
14283 | } | |
65f38f15 AM |
14284 | } |
14285 | else | |
14286 | { | |
14287 | long indx = 0; | |
14288 | ||
25f23106 AM |
14289 | if (h != NULL |
14290 | ? h->elf.type == STT_GNU_IFUNC | |
14291 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14292 | { | |
25f53a85 | 14293 | info->callbacks->einfo |
bc30df16 AM |
14294 | (_("%P: %H: %s for indirect " |
14295 | "function `%T' unsupported\n"), | |
25f53a85 | 14296 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14297 | ppc64_elf_howto_table[r_type]->name, |
14298 | sym_name); | |
14299 | ret = FALSE; | |
14300 | } | |
cf35638d | 14301 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14302 | ; |
14303 | else if (sec == NULL || sec->owner == NULL) | |
14304 | { | |
14305 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14306 | return FALSE; |
65f38f15 AM |
14307 | } |
14308 | else | |
14309 | { | |
14310 | asection *osec; | |
14311 | ||
14312 | osec = sec->output_section; | |
14313 | indx = elf_section_data (osec)->dynindx; | |
14314 | ||
74541ad4 AM |
14315 | if (indx == 0) |
14316 | { | |
14317 | if ((osec->flags & SEC_READONLY) == 0 | |
14318 | && htab->elf.data_index_section != NULL) | |
14319 | osec = htab->elf.data_index_section; | |
14320 | else | |
14321 | osec = htab->elf.text_index_section; | |
14322 | indx = elf_section_data (osec)->dynindx; | |
14323 | } | |
14324 | BFD_ASSERT (indx != 0); | |
14325 | ||
65f38f15 AM |
14326 | /* We are turning this relocation into one |
14327 | against a section symbol, so subtract out | |
14328 | the output section's address but not the | |
14329 | offset of the input section in the output | |
14330 | section. */ | |
14331 | outrel.r_addend -= osec->vma; | |
14332 | } | |
14333 | ||
14334 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14335 | } | |
14336 | } | |
14337 | ||
14338 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14339 | if (h != NULL |
14340 | ? h->elf.type == STT_GNU_IFUNC | |
14341 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14342 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14343 | if (sreloc == NULL) |
14344 | abort (); | |
14345 | ||
dfbb6ac9 AM |
14346 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14347 | >= sreloc->size) | |
14348 | abort (); | |
947216bf AM |
14349 | loc = sreloc->contents; |
14350 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14351 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14352 | ||
14353 | /* If this reloc is against an external symbol, it will | |
14354 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14355 | anything now. However, for the sake of prelink ensure |
14356 | that the section contents are a known value. */ | |
65f38f15 | 14357 | if (! relocate) |
81407a69 AM |
14358 | { |
14359 | unresolved_reloc = FALSE; | |
14360 | /* The value chosen here is quite arbitrary as ld.so | |
14361 | ignores section contents except for the special | |
14362 | case of .opd where the contents might be accessed | |
14363 | before relocation. Choose zero, as that won't | |
14364 | cause reloc overflow. */ | |
14365 | relocation = 0; | |
14366 | addend = 0; | |
14367 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14368 | to improve backward compatibility with older | |
14369 | versions of ld. */ | |
14370 | if (r_type == R_PPC64_ADDR64) | |
14371 | addend = outrel.r_addend; | |
14372 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14373 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14374 | addend = (input_section->output_section->vma |
14375 | + input_section->output_offset | |
14376 | + rel->r_offset); | |
81407a69 | 14377 | } |
65f38f15 | 14378 | } |
5bd4f169 AM |
14379 | break; |
14380 | ||
65f38f15 AM |
14381 | case R_PPC64_COPY: |
14382 | case R_PPC64_GLOB_DAT: | |
14383 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14384 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14385 | case R_PPC64_RELATIVE: |
14386 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14387 | files. */ | |
ae9a127f | 14388 | /* Fall through. */ |
65f38f15 AM |
14389 | |
14390 | case R_PPC64_PLTGOT16: | |
14391 | case R_PPC64_PLTGOT16_DS: | |
14392 | case R_PPC64_PLTGOT16_HA: | |
14393 | case R_PPC64_PLTGOT16_HI: | |
14394 | case R_PPC64_PLTGOT16_LO: | |
14395 | case R_PPC64_PLTGOT16_LO_DS: | |
14396 | case R_PPC64_PLTREL32: | |
14397 | case R_PPC64_PLTREL64: | |
14398 | /* These ones haven't been implemented yet. */ | |
14399 | ||
25f53a85 | 14400 | info->callbacks->einfo |
bc30df16 | 14401 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14402 | input_bfd, |
4ce794b7 | 14403 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14404 | |
14405 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14406 | ret = FALSE; |
5bd4f169 | 14407 | continue; |
65f38f15 | 14408 | } |
5bd4f169 | 14409 | |
67f0cbdb AM |
14410 | /* Multi-instruction sequences that access the TOC can be |
14411 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14412 | to nop; addi rb,r2,x; */ | |
14413 | switch (r_type) | |
14414 | { | |
14415 | default: | |
14416 | break; | |
14417 | ||
14418 | case R_PPC64_GOT_TLSLD16_HI: | |
14419 | case R_PPC64_GOT_TLSGD16_HI: | |
14420 | case R_PPC64_GOT_TPREL16_HI: | |
14421 | case R_PPC64_GOT_DTPREL16_HI: | |
14422 | case R_PPC64_GOT16_HI: | |
14423 | case R_PPC64_TOC16_HI: | |
14424 | /* These relocs would only be useful if building up an | |
14425 | offset to later add to r2, perhaps in an indexed | |
14426 | addressing mode instruction. Don't try to optimize. | |
14427 | Unfortunately, the possibility of someone building up an | |
14428 | offset like this or even with the HA relocs, means that | |
14429 | we need to check the high insn when optimizing the low | |
14430 | insn. */ | |
14431 | break; | |
14432 | ||
14433 | case R_PPC64_GOT_TLSLD16_HA: | |
14434 | case R_PPC64_GOT_TLSGD16_HA: | |
14435 | case R_PPC64_GOT_TPREL16_HA: | |
14436 | case R_PPC64_GOT_DTPREL16_HA: | |
14437 | case R_PPC64_GOT16_HA: | |
14438 | case R_PPC64_TOC16_HA: | |
98528052 | 14439 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14440 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14441 | { |
14442 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14443 | bfd_put_32 (input_bfd, NOP, p); | |
14444 | } | |
67f0cbdb AM |
14445 | break; |
14446 | ||
14447 | case R_PPC64_GOT_TLSLD16_LO: | |
14448 | case R_PPC64_GOT_TLSGD16_LO: | |
14449 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14450 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14451 | case R_PPC64_GOT16_LO: | |
14452 | case R_PPC64_GOT16_LO_DS: | |
14453 | case R_PPC64_TOC16_LO: | |
14454 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14455 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14456 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14457 | { |
14458 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14459 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14460 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14461 | { | |
14462 | /* Transform addic to addi when we change reg. */ | |
14463 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14464 | insn |= (14u << 26) | (2 << 16); | |
14465 | } | |
14466 | else | |
67f0cbdb | 14467 | { |
98528052 AM |
14468 | insn &= ~(0x1f << 16); |
14469 | insn |= 2 << 16; | |
67f0cbdb | 14470 | } |
560c8763 | 14471 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14472 | } |
14473 | break; | |
14474 | } | |
14475 | ||
65f38f15 AM |
14476 | /* Do any further special processing. */ |
14477 | switch (r_type) | |
14478 | { | |
14479 | default: | |
14480 | break; | |
14481 | ||
25f23106 | 14482 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14483 | case R_PPC64_ADDR16_HA: |
14484 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14485 | case R_PPC64_ADDR16_HIGHERA: |
14486 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14487 | case R_PPC64_TOC16_HA: |
14488 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14489 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14490 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14491 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14492 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14493 | case R_PPC64_DTPREL16_HA: |
14494 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14495 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14496 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14497 | /* It's just possible that this symbol is a weak symbol |
14498 | that's not actually defined anywhere. In that case, | |
14499 | 'sec' would be NULL, and we should leave the symbol | |
14500 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14501 | if (sec == NULL) |
14502 | break; | |
14503 | /* Fall thru */ | |
14504 | ||
14505 | case R_PPC64_GOT16_HA: | |
14506 | case R_PPC64_PLTGOT16_HA: | |
14507 | case R_PPC64_PLT16_HA: | |
14508 | case R_PPC64_GOT_TLSGD16_HA: | |
14509 | case R_PPC64_GOT_TLSLD16_HA: | |
14510 | case R_PPC64_GOT_TPREL16_HA: | |
14511 | case R_PPC64_GOT_DTPREL16_HA: | |
14512 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14513 | Bits 0:15 are not used. */ | |
14514 | addend += 0x8000; | |
65f38f15 AM |
14515 | break; |
14516 | ||
14517 | case R_PPC64_ADDR16_DS: | |
14518 | case R_PPC64_ADDR16_LO_DS: | |
14519 | case R_PPC64_GOT16_DS: | |
14520 | case R_PPC64_GOT16_LO_DS: | |
14521 | case R_PPC64_PLT16_LO_DS: | |
14522 | case R_PPC64_SECTOFF_DS: | |
14523 | case R_PPC64_SECTOFF_LO_DS: | |
14524 | case R_PPC64_TOC16_DS: | |
14525 | case R_PPC64_TOC16_LO_DS: | |
14526 | case R_PPC64_PLTGOT16_DS: | |
14527 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14528 | case R_PPC64_GOT_TPREL16_DS: |
14529 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14530 | case R_PPC64_GOT_DTPREL16_DS: | |
14531 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14532 | case R_PPC64_TPREL16_DS: | |
14533 | case R_PPC64_TPREL16_LO_DS: | |
14534 | case R_PPC64_DTPREL16_DS: | |
14535 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14536 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14537 | mask = 3; | |
14538 | /* If this reloc is against an lq insn, then the value must be | |
14539 | a multiple of 16. This is somewhat of a hack, but the | |
14540 | "correct" way to do this by defining _DQ forms of all the | |
14541 | _DS relocs bloats all reloc switches in this file. It | |
14542 | doesn't seem to make much sense to use any of these relocs | |
14543 | in data, so testing the insn should be safe. */ | |
494dac0c | 14544 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14545 | mask = 15; |
14546 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14547 | { |
25f53a85 | 14548 | info->callbacks->einfo |
8de848d8 | 14549 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14550 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 14551 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 14552 | mask + 1); |
65f38f15 | 14553 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14554 | ret = FALSE; |
65f38f15 AM |
14555 | continue; |
14556 | } | |
14557 | break; | |
5bd4f169 AM |
14558 | } |
14559 | ||
239e1f3a AM |
14560 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14561 | because such sections are not SEC_ALLOC and thus ld.so will | |
14562 | not process them. */ | |
65f38f15 | 14563 | if (unresolved_reloc |
239e1f3a | 14564 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14565 | && h->elf.def_dynamic) |
14566 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14567 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14568 | { |
25f53a85 | 14569 | info->callbacks->einfo |
bc30df16 | 14570 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14571 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 14572 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 14573 | h->elf.root.root.string); |
b34976b6 | 14574 | ret = FALSE; |
9c07fe7c | 14575 | } |
5bd4f169 | 14576 | |
65f38f15 | 14577 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
14578 | input_bfd, |
14579 | input_section, | |
14580 | contents, | |
411e1bfb | 14581 | rel->r_offset, |
5bd4f169 AM |
14582 | relocation, |
14583 | addend); | |
14584 | ||
ef60b7ff | 14585 | if (r != bfd_reloc_ok) |
5bd4f169 | 14586 | { |
bc30df16 AM |
14587 | char *more_info = NULL; |
14588 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
14589 | ||
14590 | if (reloc_dest != DEST_NORMAL) | |
14591 | { | |
14592 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14593 | if (more_info != NULL) | |
14594 | { | |
14595 | strcpy (more_info, reloc_name); | |
14596 | strcat (more_info, (reloc_dest == DEST_OPD | |
14597 | ? " (OPD)" : " (stub)")); | |
14598 | reloc_name = more_info; | |
14599 | } | |
14600 | } | |
14601 | ||
cd27b276 | 14602 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14603 | { |
cd27b276 AM |
14604 | if (warned) |
14605 | continue; | |
14606 | if (h != NULL | |
039b3fef | 14607 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 14608 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
14609 | { |
14610 | /* Assume this is a call protected by other code that | |
14611 | detects the symbol is undefined. If this is the case, | |
14612 | we can safely ignore the overflow. If not, the | |
14613 | program is hosed anyway, and a little warning isn't | |
14614 | going to help. */ | |
14615 | ||
14616 | continue; | |
14617 | } | |
14618 | ||
ef60b7ff | 14619 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14620 | (info, &h->elf.root, sym_name, |
14621 | reloc_name, orig_rel.r_addend, | |
14622 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14623 | return FALSE; |
ef60b7ff AM |
14624 | } |
14625 | else | |
14626 | { | |
25f53a85 | 14627 | info->callbacks->einfo |
bc30df16 | 14628 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14629 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14630 | reloc_name, sym_name, (int) r); |
b34976b6 | 14631 | ret = FALSE; |
ef60b7ff | 14632 | } |
bc30df16 AM |
14633 | if (more_info != NULL) |
14634 | free (more_info); | |
5bd4f169 | 14635 | } |
5bd4f169 AM |
14636 | } |
14637 | ||
645ea6a9 AM |
14638 | /* If we're emitting relocations, then shortly after this function |
14639 | returns, reloc offsets and addends for this section will be | |
14640 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14641 | file rather than the input. Save a copy of the relocs for |
14642 | opd_entry_value. */ | |
4cc603a5 | 14643 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14644 | { |
14645 | bfd_size_type amt; | |
14646 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14647 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14648 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14649 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14650 | if (rel == NULL) |
14651 | return FALSE; | |
14652 | memcpy (rel, relocs, amt); | |
14653 | } | |
5bd4f169 AM |
14654 | return ret; |
14655 | } | |
14656 | ||
754021d0 AM |
14657 | /* Adjust the value of any local symbols in opd sections. */ |
14658 | ||
6e0b88f1 | 14659 | static int |
754021d0 AM |
14660 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14661 | const char *name ATTRIBUTE_UNUSED, | |
14662 | Elf_Internal_Sym *elfsym, | |
14663 | asection *input_sec, | |
14664 | struct elf_link_hash_entry *h) | |
14665 | { | |
74f0fb50 AM |
14666 | struct _opd_sec_data *opd; |
14667 | long adjust; | |
754021d0 AM |
14668 | bfd_vma value; |
14669 | ||
4025353c | 14670 | if (h != NULL) |
6e0b88f1 | 14671 | return 1; |
4025353c | 14672 | |
74f0fb50 AM |
14673 | opd = get_opd_info (input_sec); |
14674 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14675 | return 1; |
754021d0 AM |
14676 | |
14677 | value = elfsym->st_value - input_sec->output_offset; | |
14678 | if (!info->relocatable) | |
14679 | value -= input_sec->output_section->vma; | |
14680 | ||
74f0fb50 | 14681 | adjust = opd->adjust[value / 8]; |
4025353c | 14682 | if (adjust == -1) |
6e0b88f1 AM |
14683 | return 2; |
14684 | ||
14685 | elfsym->st_value += adjust; | |
14686 | return 1; | |
754021d0 AM |
14687 | } |
14688 | ||
5bd4f169 AM |
14689 | /* Finish up dynamic symbol handling. We set the contents of various |
14690 | dynamic sections here. */ | |
14691 | ||
b34976b6 | 14692 | static bfd_boolean |
4ce794b7 AM |
14693 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14694 | struct bfd_link_info *info, | |
14695 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14696 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14697 | { |
65f38f15 | 14698 | struct ppc_link_hash_table *htab; |
8387904d AM |
14699 | struct plt_entry *ent; |
14700 | Elf_Internal_Rela rela; | |
14701 | bfd_byte *loc; | |
5bd4f169 | 14702 | |
65f38f15 | 14703 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14704 | if (htab == NULL) |
14705 | return FALSE; | |
5bd4f169 | 14706 | |
8387904d AM |
14707 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14708 | if (ent->plt.offset != (bfd_vma) -1) | |
14709 | { | |
14710 | /* This symbol has an entry in the procedure linkage | |
14711 | table. Set it up. */ | |
e054468f AM |
14712 | if (!htab->elf.dynamic_sections_created |
14713 | || h->dynindx == -1) | |
14714 | { | |
14715 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14716 | && h->def_regular | |
14717 | && (h->root.type == bfd_link_hash_defined | |
14718 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
14719 | rela.r_offset = (htab->elf.iplt->output_section->vma |
14720 | + htab->elf.iplt->output_offset | |
25f23106 | 14721 | + ent->plt.offset); |
ee67d69a AM |
14722 | if (htab->opd_abi) |
14723 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14724 | else | |
14725 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
14726 | rela.r_addend = (h->root.u.def.value |
14727 | + h->root.u.def.section->output_offset | |
14728 | + h->root.u.def.section->output_section->vma | |
14729 | + ent->addend); | |
33e44f2e AM |
14730 | loc = (htab->elf.irelplt->contents |
14731 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 14732 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
14733 | } |
14734 | else | |
14735 | { | |
33e44f2e AM |
14736 | rela.r_offset = (htab->elf.splt->output_section->vma |
14737 | + htab->elf.splt->output_offset | |
25f23106 | 14738 | + ent->plt.offset); |
e054468f AM |
14739 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14740 | rela.r_addend = ent->addend; | |
33e44f2e | 14741 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
14742 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
14743 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 14744 | } |
8387904d | 14745 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
14746 | |
14747 | if (!htab->opd_abi) | |
14748 | { | |
14749 | if (!h->def_regular) | |
14750 | { | |
14751 | /* Mark the symbol as undefined, rather than as | |
14752 | defined in glink. Leave the value if there were | |
14753 | any relocations where pointer equality matters | |
14754 | (this is a clue for the dynamic linker, to make | |
14755 | function pointer comparisons work between an | |
14756 | application and shared library), otherwise set it | |
14757 | to zero. */ | |
14758 | sym->st_shndx = SHN_UNDEF; | |
14759 | if (!h->pointer_equality_needed) | |
14760 | sym->st_value = 0; | |
14761 | else if (!h->ref_regular_nonweak) | |
14762 | { | |
14763 | /* This breaks function pointer comparisons, but | |
14764 | that is better than breaking tests for a NULL | |
14765 | function pointer. */ | |
14766 | sym->st_value = 0; | |
14767 | } | |
14768 | } | |
14769 | } | |
8387904d | 14770 | } |
5bd4f169 | 14771 | |
f5385ebf | 14772 | if (h->needs_copy) |
5bd4f169 | 14773 | { |
65f38f15 | 14774 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14775 | |
65f38f15 AM |
14776 | if (h->dynindx == -1 |
14777 | || (h->root.type != bfd_link_hash_defined | |
14778 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14779 | || htab->relbss == NULL) |
65f38f15 | 14780 | abort (); |
5bd4f169 AM |
14781 | |
14782 | rela.r_offset = (h->root.u.def.value | |
14783 | + h->root.u.def.section->output_section->vma | |
14784 | + h->root.u.def.section->output_offset); | |
14785 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14786 | rela.r_addend = 0; | |
4ce794b7 AM |
14787 | loc = htab->relbss->contents; |
14788 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14789 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14790 | } |
14791 | ||
b34976b6 | 14792 | return TRUE; |
5bd4f169 AM |
14793 | } |
14794 | ||
65f38f15 AM |
14795 | /* Used to decide how to sort relocs in an optimal manner for the |
14796 | dynamic linker, before writing them out. */ | |
14797 | ||
14798 | static enum elf_reloc_type_class | |
7e612e98 AM |
14799 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14800 | const asection *rel_sec, | |
14801 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14802 | { |
04c9666a | 14803 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14804 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14805 | ||
33e44f2e | 14806 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 14807 | return reloc_class_ifunc; |
a33d1f77 | 14808 | |
4ce794b7 | 14809 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14810 | switch (r_type) |
65f38f15 AM |
14811 | { |
14812 | case R_PPC64_RELATIVE: | |
14813 | return reloc_class_relative; | |
14814 | case R_PPC64_JMP_SLOT: | |
14815 | return reloc_class_plt; | |
14816 | case R_PPC64_COPY: | |
14817 | return reloc_class_copy; | |
14818 | default: | |
14819 | return reloc_class_normal; | |
14820 | } | |
14821 | } | |
14822 | ||
5bd4f169 AM |
14823 | /* Finish up the dynamic sections. */ |
14824 | ||
b34976b6 | 14825 | static bfd_boolean |
4ce794b7 AM |
14826 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14827 | struct bfd_link_info *info) | |
5bd4f169 | 14828 | { |
65f38f15 AM |
14829 | struct ppc_link_hash_table *htab; |
14830 | bfd *dynobj; | |
5bd4f169 | 14831 | asection *sdyn; |
5bd4f169 | 14832 | |
65f38f15 | 14833 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14834 | if (htab == NULL) |
14835 | return FALSE; | |
14836 | ||
65f38f15 | 14837 | dynobj = htab->elf.dynobj; |
3d4d4302 | 14838 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 14839 | |
65f38f15 | 14840 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 14841 | { |
5bd4f169 AM |
14842 | Elf64_External_Dyn *dyncon, *dynconend; |
14843 | ||
33e44f2e | 14844 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 14845 | abort (); |
5bd4f169 AM |
14846 | |
14847 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 14848 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
14849 | for (; dyncon < dynconend; dyncon++) |
14850 | { | |
14851 | Elf_Internal_Dyn dyn; | |
19397422 | 14852 | asection *s; |
5bd4f169 AM |
14853 | |
14854 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
14855 | ||
14856 | switch (dyn.d_tag) | |
14857 | { | |
65f38f15 AM |
14858 | default: |
14859 | continue; | |
5bd4f169 | 14860 | |
5d1634d7 | 14861 | case DT_PPC64_GLINK: |
4ce794b7 | 14862 | s = htab->glink; |
6348e046 | 14863 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
14864 | /* We stupidly defined DT_PPC64_GLINK to be the start |
14865 | of glink rather than the first entry point, which is | |
14866 | what ld.so needs, and now have a bigger stub to | |
14867 | support automatic multiple TOCs. */ | |
b9e5796b | 14868 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
14869 | break; |
14870 | ||
19397422 AM |
14871 | case DT_PPC64_OPD: |
14872 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14873 | if (s == NULL) |
14874 | continue; | |
14875 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
14876 | break; |
14877 | ||
e8910a83 AM |
14878 | case DT_PPC64_OPT: |
14879 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
14880 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
14881 | break; | |
14882 | ||
19397422 AM |
14883 | case DT_PPC64_OPDSZ: |
14884 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14885 | if (s == NULL) |
14886 | continue; | |
eea6121a | 14887 | dyn.d_un.d_val = s->size; |
19397422 AM |
14888 | break; |
14889 | ||
65f38f15 | 14890 | case DT_PLTGOT: |
33e44f2e | 14891 | s = htab->elf.splt; |
6348e046 | 14892 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
14893 | break; |
14894 | ||
14895 | case DT_JMPREL: | |
33e44f2e | 14896 | s = htab->elf.srelplt; |
6348e046 | 14897 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 14898 | break; |
5bd4f169 | 14899 | |
65f38f15 | 14900 | case DT_PLTRELSZ: |
33e44f2e | 14901 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
14902 | break; |
14903 | ||
14904 | case DT_RELASZ: | |
14905 | /* Don't count procedure linkage table relocs in the | |
14906 | overall reloc count. */ | |
33e44f2e | 14907 | s = htab->elf.srelplt; |
6348e046 AM |
14908 | if (s == NULL) |
14909 | continue; | |
eea6121a | 14910 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
14911 | break; |
14912 | ||
14913 | case DT_RELA: | |
14914 | /* We may not be using the standard ELF linker script. | |
14915 | If .rela.plt is the first .rela section, we adjust | |
14916 | DT_RELA to not include it. */ | |
33e44f2e | 14917 | s = htab->elf.srelplt; |
6348e046 AM |
14918 | if (s == NULL) |
14919 | continue; | |
14920 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
14921 | continue; | |
eea6121a | 14922 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 14923 | break; |
5bd4f169 | 14924 | } |
5bd4f169 | 14925 | |
65f38f15 | 14926 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 14927 | } |
5bd4f169 AM |
14928 | } |
14929 | ||
33e44f2e | 14930 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
14931 | { |
14932 | /* Fill in the first entry in the global offset table. | |
14933 | We use it to hold the link-time TOCbase. */ | |
14934 | bfd_put_64 (output_bfd, | |
60ee0d4a | 14935 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 14936 | htab->elf.sgot->contents); |
5d1634d7 AM |
14937 | |
14938 | /* Set .got entry size. */ | |
33e44f2e | 14939 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
14940 | } |
14941 | ||
33e44f2e | 14942 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
14943 | { |
14944 | /* Set .plt entry size. */ | |
33e44f2e | 14945 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 14946 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
14947 | } |
14948 | ||
84f5d08e AM |
14949 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
14950 | brlt ourselves if emitrelocations. */ | |
14951 | if (htab->brlt != NULL | |
14952 | && htab->brlt->reloc_count != 0 | |
14953 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14954 | htab->brlt, | |
d4730f92 | 14955 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
14956 | elf_section_data (htab->brlt)->relocs, |
14957 | NULL)) | |
14958 | return FALSE; | |
14959 | ||
176a0d42 AM |
14960 | if (htab->glink != NULL |
14961 | && htab->glink->reloc_count != 0 | |
14962 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14963 | htab->glink, | |
d4730f92 | 14964 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
14965 | elf_section_data (htab->glink)->relocs, |
14966 | NULL)) | |
14967 | return FALSE; | |
14968 | ||
58d180e8 AM |
14969 | |
14970 | if (htab->glink_eh_frame != NULL | |
dbaa2011 | 14971 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
58d180e8 AM |
14972 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
14973 | htab->glink_eh_frame, | |
14974 | htab->glink_eh_frame->contents)) | |
14975 | return FALSE; | |
14976 | ||
e717da7e | 14977 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
14978 | since we didn't add them to DYNOBJ. We know dynobj is the first |
14979 | bfd. */ | |
e717da7e AM |
14980 | while ((dynobj = dynobj->link_next) != NULL) |
14981 | { | |
14982 | asection *s; | |
7b53ace3 | 14983 | |
0c8d6e5c | 14984 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
14985 | continue; |
14986 | ||
e717da7e AM |
14987 | s = ppc64_elf_tdata (dynobj)->got; |
14988 | if (s != NULL | |
eea6121a | 14989 | && s->size != 0 |
e717da7e AM |
14990 | && s->output_section != bfd_abs_section_ptr |
14991 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14992 | s->contents, s->output_offset, | |
eea6121a | 14993 | s->size)) |
e717da7e AM |
14994 | return FALSE; |
14995 | s = ppc64_elf_tdata (dynobj)->relgot; | |
14996 | if (s != NULL | |
eea6121a | 14997 | && s->size != 0 |
e717da7e AM |
14998 | && s->output_section != bfd_abs_section_ptr |
14999 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15000 | s->contents, s->output_offset, | |
eea6121a | 15001 | s->size)) |
e717da7e AM |
15002 | return FALSE; |
15003 | } | |
f6c52c13 | 15004 | |
b34976b6 | 15005 | return TRUE; |
5bd4f169 AM |
15006 | } |
15007 | ||
5bd4f169 | 15008 | #include "elf64-target.h" |
7b8e7dad AM |
15009 | |
15010 | /* FreeBSD support */ | |
15011 | ||
15012 | #undef TARGET_LITTLE_SYM | |
15013 | #undef TARGET_LITTLE_NAME | |
15014 | ||
15015 | #undef TARGET_BIG_SYM | |
15016 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
15017 | #undef TARGET_BIG_NAME | |
15018 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15019 | ||
15020 | #undef ELF_OSABI | |
15021 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15022 | ||
15023 | #undef elf64_bed | |
15024 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15025 | ||
15026 | #include "elf64-target.h" | |
15027 |