Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
6f2750fe | 2 | Copyright (C) 1999-2016 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 56 | static bfd_vma opd_entry_value |
aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 58 | |
6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
63 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
66 | #define ELF_MAXPAGESIZE 0x10000 | |
04c6a44c | 67 | #define ELF_COMMONPAGESIZE 0x10000 |
ad8e1ba5 AM |
68 | #define elf_info_to_howto ppc64_elf_info_to_howto |
69 | ||
70 | #define elf_backend_want_got_sym 0 | |
71 | #define elf_backend_want_plt_sym 0 | |
72 | #define elf_backend_plt_alignment 3 | |
73 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 74 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
75 | #define elf_backend_can_gc_sections 1 |
76 | #define elf_backend_can_refcount 1 | |
77 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 78 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 79 | |
e717da7e | 80 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 81 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
84 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 88 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
89 | |
90 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
91 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
92 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 93 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
94 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
95 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 96 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 97 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 98 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 99 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 100 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 101 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 102 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
103 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
104 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
105 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
106 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 107 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 110 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 111 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 112 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
113 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
114 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
115 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
116 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 117 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 118 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 119 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 120 | |
5bd4f169 AM |
121 | /* The name of the dynamic interpreter. This is put in the .interp |
122 | section. */ | |
123 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
124 | ||
125 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 126 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
127 | |
128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 129 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 130 | |
a078d95a AM |
131 | /* Offsets to some stack save slots. */ |
132 | #define STK_LR 16 | |
133 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 134 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
135 | CR save slot. Used only by optimised __tls_get_addr call stub, |
136 | relying on __tls_get_addr_opt not saving CR.. */ | |
137 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
138 | ||
5bd4f169 | 139 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 140 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
141 | /* TOC base alignment. */ |
142 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
143 | |
144 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
145 | #define TP_OFFSET 0x7000 | |
146 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 147 | |
ad8e1ba5 AM |
148 | /* .plt call stub instructions. The normal stub is like this, but |
149 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 150 | insert an addi to adjust r11. */ |
a078d95a | 151 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
152 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
153 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
154 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
155 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
156 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
157 | #define BCTR 0x4e800420 /* bctr */ |
158 | ||
71a39c98 | 159 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
160 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
161 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
162 | ||
71a39c98 AM |
163 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
164 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
165 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
166 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
167 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
168 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
169 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
170 | ||
71a39c98 | 171 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
172 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
173 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
174 | ||
a078d95a | 175 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
006589cf AM |
176 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ |
177 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 178 | |
006589cf AM |
179 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
180 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ | |
181 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d AM |
182 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
183 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
184 | ||
ee4bf8d2 | 185 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 186 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
187 | /* 0: */ |
188 | /* .quad plt0-1f */ | |
189 | /* __glink: */ | |
190 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
191 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
192 | /* 1: */ | |
193 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 194 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 195 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
196 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
197 | /* ld %12,0(%11) */ | |
198 | /* ld %2,8(%11) */ | |
199 | /* mtctr %12 */ | |
200 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 201 | /* bctr */ |
b9e5796b AM |
202 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
203 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
204 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
205 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
206 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
207 | |
208 | /* Pad with this. */ | |
209 | #define NOP 0x60000000 | |
210 | ||
721956f4 AM |
211 | /* Some other nops. */ |
212 | #define CROR_151515 0x4def7b82 | |
213 | #define CROR_313131 0x4ffffb82 | |
214 | ||
cedb70c5 | 215 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
216 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
217 | #define B_DOT 0x48000000 /* b . */ | |
218 | ||
219 | /* After that, we need two instructions to load the index, followed by | |
220 | a branch. */ | |
221 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 222 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 223 | |
deb0e272 AM |
224 | /* Instructions used by the save and restore reg functions. */ |
225 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
226 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
227 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
228 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
229 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
230 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
231 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
232 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
233 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
234 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
235 | #define BLR 0x4e800020 /* blr */ |
236 | ||
41bd81ab AM |
237 | /* Since .opd is an array of descriptors and each entry will end up |
238 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
239 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 240 | relocate .opd without reloc entries. */ |
41bd81ab AM |
241 | #ifndef NO_OPD_RELOCS |
242 | #define NO_OPD_RELOCS 0 | |
243 | #endif | |
810d4e75 | 244 | |
a4b6fadd AM |
245 | #ifndef ARRAY_SIZE |
246 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
247 | #endif | |
248 | ||
810d4e75 AM |
249 | static inline int |
250 | abiversion (bfd *abfd) | |
251 | { | |
252 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
253 | } | |
254 | ||
255 | static inline void | |
256 | set_abiversion (bfd *abfd, int ver) | |
257 | { | |
258 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
259 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
260 | } | |
5bd4f169 | 261 | \f |
f5e87a1d | 262 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 263 | |
5bd4f169 | 264 | /* Relocation HOWTO's. */ |
04c9666a | 265 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
266 | |
267 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
268 | /* This reloc does nothing. */ | |
269 | HOWTO (R_PPC64_NONE, /* type */ | |
270 | 0, /* rightshift */ | |
6346d5ca AM |
271 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
272 | 0, /* bitsize */ | |
b34976b6 | 273 | FALSE, /* pc_relative */ |
5bd4f169 | 274 | 0, /* bitpos */ |
f5e87a1d | 275 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
276 | bfd_elf_generic_reloc, /* special_function */ |
277 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 278 | FALSE, /* partial_inplace */ |
d006db6c | 279 | 0, /* src_mask */ |
5bd4f169 | 280 | 0, /* dst_mask */ |
b34976b6 | 281 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
282 | |
283 | /* A standard 32 bit relocation. */ | |
284 | HOWTO (R_PPC64_ADDR32, /* type */ | |
285 | 0, /* rightshift */ | |
286 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
287 | 32, /* bitsize */ | |
b34976b6 | 288 | FALSE, /* pc_relative */ |
5bd4f169 AM |
289 | 0, /* bitpos */ |
290 | complain_overflow_bitfield, /* complain_on_overflow */ | |
291 | bfd_elf_generic_reloc, /* special_function */ | |
292 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 293 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
294 | 0, /* src_mask */ |
295 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 296 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
297 | |
298 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
299 | FIXME: we don't check that, we just clear them. */ | |
300 | HOWTO (R_PPC64_ADDR24, /* type */ | |
301 | 0, /* rightshift */ | |
302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 26, /* bitsize */ | |
b34976b6 | 304 | FALSE, /* pc_relative */ |
5bd4f169 AM |
305 | 0, /* bitpos */ |
306 | complain_overflow_bitfield, /* complain_on_overflow */ | |
307 | bfd_elf_generic_reloc, /* special_function */ | |
308 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 309 | FALSE, /* partial_inplace */ |
d006db6c | 310 | 0, /* src_mask */ |
f5e87a1d | 311 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 312 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
313 | |
314 | /* A standard 16 bit relocation. */ | |
315 | HOWTO (R_PPC64_ADDR16, /* type */ | |
316 | 0, /* rightshift */ | |
317 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 16, /* bitsize */ | |
b34976b6 | 319 | FALSE, /* pc_relative */ |
5bd4f169 AM |
320 | 0, /* bitpos */ |
321 | complain_overflow_bitfield, /* complain_on_overflow */ | |
322 | bfd_elf_generic_reloc, /* special_function */ | |
323 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 324 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
325 | 0, /* src_mask */ |
326 | 0xffff, /* dst_mask */ | |
b34976b6 | 327 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
328 | |
329 | /* A 16 bit relocation without overflow. */ | |
330 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
331 | 0, /* rightshift */ | |
332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 16, /* bitsize */ | |
b34976b6 | 334 | FALSE, /* pc_relative */ |
5bd4f169 AM |
335 | 0, /* bitpos */ |
336 | complain_overflow_dont,/* complain_on_overflow */ | |
337 | bfd_elf_generic_reloc, /* special_function */ | |
338 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 339 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
340 | 0, /* src_mask */ |
341 | 0xffff, /* dst_mask */ | |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
343 | |
344 | /* Bits 16-31 of an address. */ | |
345 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
346 | 16, /* rightshift */ | |
347 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 16, /* bitsize */ | |
b34976b6 | 349 | FALSE, /* pc_relative */ |
5bd4f169 | 350 | 0, /* bitpos */ |
f9c6b907 | 351 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
352 | bfd_elf_generic_reloc, /* special_function */ |
353 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 354 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
355 | 0, /* src_mask */ |
356 | 0xffff, /* dst_mask */ | |
b34976b6 | 357 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
358 | |
359 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
360 | bits, treated as a signed number, is negative. */ | |
361 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
362 | 16, /* rightshift */ | |
363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
b34976b6 | 365 | FALSE, /* pc_relative */ |
5bd4f169 | 366 | 0, /* bitpos */ |
f9c6b907 | 367 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 368 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 369 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 370 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
371 | 0, /* src_mask */ |
372 | 0xffff, /* dst_mask */ | |
b34976b6 | 373 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
374 | |
375 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
376 | FIXME: we don't check that, we just clear them. */ | |
377 | HOWTO (R_PPC64_ADDR14, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 16, /* bitsize */ | |
b34976b6 | 381 | FALSE, /* pc_relative */ |
5bd4f169 | 382 | 0, /* bitpos */ |
b80eed39 | 383 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 384 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 385 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 386 | FALSE, /* partial_inplace */ |
d006db6c | 387 | 0, /* src_mask */ |
f5e87a1d | 388 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 389 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
390 | |
391 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
392 | indicate that the branch is expected to be taken. The lower two | |
393 | bits must be zero. */ | |
394 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
b34976b6 | 398 | FALSE, /* pc_relative */ |
5bd4f169 | 399 | 0, /* bitpos */ |
b80eed39 | 400 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 401 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 402 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 403 | FALSE, /* partial_inplace */ |
d006db6c | 404 | 0, /* src_mask */ |
f5e87a1d | 405 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 406 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
407 | |
408 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
409 | indicate that the branch is not expected to be taken. The lower | |
410 | two bits must be zero. */ | |
411 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
b34976b6 | 415 | FALSE, /* pc_relative */ |
5bd4f169 | 416 | 0, /* bitpos */ |
b80eed39 | 417 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 418 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 419 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 420 | FALSE, /* partial_inplace */ |
d006db6c | 421 | 0, /* src_mask */ |
f5e87a1d | 422 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 423 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
424 | |
425 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
426 | HOWTO (R_PPC64_REL24, /* type */ | |
427 | 0, /* rightshift */ | |
428 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 26, /* bitsize */ | |
b34976b6 | 430 | TRUE, /* pc_relative */ |
5bd4f169 AM |
431 | 0, /* bitpos */ |
432 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 433 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 434 | "R_PPC64_REL24", /* name */ |
b34976b6 | 435 | FALSE, /* partial_inplace */ |
d006db6c | 436 | 0, /* src_mask */ |
f5e87a1d | 437 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 438 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
439 | |
440 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
441 | HOWTO (R_PPC64_REL14, /* type */ | |
442 | 0, /* rightshift */ | |
443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 16, /* bitsize */ | |
b34976b6 | 445 | TRUE, /* pc_relative */ |
5bd4f169 AM |
446 | 0, /* bitpos */ |
447 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 448 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 449 | "R_PPC64_REL14", /* name */ |
b34976b6 | 450 | FALSE, /* partial_inplace */ |
d006db6c | 451 | 0, /* src_mask */ |
f5e87a1d | 452 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 453 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
454 | |
455 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
456 | the branch is expected to be taken. The lower two bits must be | |
457 | zero. */ | |
458 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 16, /* bitsize */ | |
b34976b6 | 462 | TRUE, /* pc_relative */ |
5bd4f169 AM |
463 | 0, /* bitpos */ |
464 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 465 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 466 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
d006db6c | 468 | 0, /* src_mask */ |
f5e87a1d | 469 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 470 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
471 | |
472 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
473 | the branch is not expected to be taken. The lower two bits must | |
474 | be zero. */ | |
475 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
476 | 0, /* rightshift */ | |
477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 16, /* bitsize */ | |
b34976b6 | 479 | TRUE, /* pc_relative */ |
5bd4f169 AM |
480 | 0, /* bitpos */ |
481 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 482 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 483 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 484 | FALSE, /* partial_inplace */ |
d006db6c | 485 | 0, /* src_mask */ |
f5e87a1d | 486 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 487 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
488 | |
489 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
490 | symbol. */ | |
491 | HOWTO (R_PPC64_GOT16, /* type */ | |
492 | 0, /* rightshift */ | |
493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
494 | 16, /* bitsize */ | |
b34976b6 | 495 | FALSE, /* pc_relative */ |
5bd4f169 AM |
496 | 0, /* bitpos */ |
497 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 498 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 499 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 500 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
501 | 0, /* src_mask */ |
502 | 0xffff, /* dst_mask */ | |
b34976b6 | 503 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
504 | |
505 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
506 | the symbol. */ | |
507 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
508 | 0, /* rightshift */ | |
509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 16, /* bitsize */ | |
b34976b6 | 511 | FALSE, /* pc_relative */ |
5bd4f169 AM |
512 | 0, /* bitpos */ |
513 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 514 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 515 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 516 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
517 | 0, /* src_mask */ |
518 | 0xffff, /* dst_mask */ | |
b34976b6 | 519 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
520 | |
521 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
522 | the symbol. */ | |
523 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
524 | 16, /* rightshift */ | |
525 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 16, /* bitsize */ | |
b34976b6 | 527 | FALSE, /* pc_relative */ |
5bd4f169 | 528 | 0, /* bitpos */ |
f9c6b907 | 529 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 530 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 531 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 532 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
533 | 0, /* src_mask */ |
534 | 0xffff, /* dst_mask */ | |
b34976b6 | 535 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
536 | |
537 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
538 | the symbol. */ | |
539 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
540 | 16, /* rightshift */ | |
541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 16, /* bitsize */ | |
b34976b6 | 543 | FALSE, /* pc_relative */ |
5bd4f169 | 544 | 0, /* bitpos */ |
f9c6b907 | 545 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 547 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
549 | 0, /* src_mask */ |
550 | 0xffff, /* dst_mask */ | |
b34976b6 | 551 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
552 | |
553 | /* This is used only by the dynamic linker. The symbol should exist | |
554 | both in the object being run and in some shared library. The | |
555 | dynamic linker copies the data addressed by the symbol from the | |
556 | shared library into the object, because the object being | |
557 | run has to have the data at some particular address. */ | |
558 | HOWTO (R_PPC64_COPY, /* type */ | |
559 | 0, /* rightshift */ | |
f5e87a1d AM |
560 | 0, /* this one is variable size */ |
561 | 0, /* bitsize */ | |
b34976b6 | 562 | FALSE, /* pc_relative */ |
5bd4f169 | 563 | 0, /* bitpos */ |
f5e87a1d AM |
564 | complain_overflow_dont, /* complain_on_overflow */ |
565 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 566 | "R_PPC64_COPY", /* name */ |
b34976b6 | 567 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
568 | 0, /* src_mask */ |
569 | 0, /* dst_mask */ | |
b34976b6 | 570 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
571 | |
572 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
573 | entries. */ | |
574 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
577 | 64, /* bitsize */ | |
b34976b6 | 578 | FALSE, /* pc_relative */ |
5bd4f169 AM |
579 | 0, /* bitpos */ |
580 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 581 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 582 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 583 | FALSE, /* partial_inplace */ |
5bd4f169 | 584 | 0, /* src_mask */ |
f5e87a1d | 585 | ONES (64), /* dst_mask */ |
b34976b6 | 586 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
587 | |
588 | /* Created by the link editor. Marks a procedure linkage table | |
589 | entry for a symbol. */ | |
590 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
591 | 0, /* rightshift */ | |
592 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
593 | 0, /* bitsize */ | |
b34976b6 | 594 | FALSE, /* pc_relative */ |
5bd4f169 AM |
595 | 0, /* bitpos */ |
596 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 597 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 598 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 599 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
600 | 0, /* src_mask */ |
601 | 0, /* dst_mask */ | |
b34976b6 | 602 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
603 | |
604 | /* Used only by the dynamic linker. When the object is run, this | |
605 | doubleword64 is set to the load address of the object, plus the | |
606 | addend. */ | |
607 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
608 | 0, /* rightshift */ | |
609 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
610 | 64, /* bitsize */ | |
b34976b6 | 611 | FALSE, /* pc_relative */ |
5bd4f169 AM |
612 | 0, /* bitpos */ |
613 | complain_overflow_dont, /* complain_on_overflow */ | |
614 | bfd_elf_generic_reloc, /* special_function */ | |
615 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 616 | FALSE, /* partial_inplace */ |
5bd4f169 | 617 | 0, /* src_mask */ |
f5e87a1d | 618 | ONES (64), /* dst_mask */ |
b34976b6 | 619 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
620 | |
621 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
622 | HOWTO (R_PPC64_UADDR32, /* type */ | |
623 | 0, /* rightshift */ | |
624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
625 | 32, /* bitsize */ | |
b34976b6 | 626 | FALSE, /* pc_relative */ |
5bd4f169 AM |
627 | 0, /* bitpos */ |
628 | complain_overflow_bitfield, /* complain_on_overflow */ | |
629 | bfd_elf_generic_reloc, /* special_function */ | |
630 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 631 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
632 | 0, /* src_mask */ |
633 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 634 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
635 | |
636 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
637 | HOWTO (R_PPC64_UADDR16, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 16, /* bitsize */ | |
b34976b6 | 641 | FALSE, /* pc_relative */ |
5bd4f169 AM |
642 | 0, /* bitpos */ |
643 | complain_overflow_bitfield, /* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* special_function */ | |
645 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 646 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
647 | 0, /* src_mask */ |
648 | 0xffff, /* dst_mask */ | |
b34976b6 | 649 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
650 | |
651 | /* 32-bit PC relative. */ | |
652 | HOWTO (R_PPC64_REL32, /* type */ | |
653 | 0, /* rightshift */ | |
654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
655 | 32, /* bitsize */ | |
b34976b6 | 656 | TRUE, /* pc_relative */ |
5bd4f169 | 657 | 0, /* bitpos */ |
5bd4f169 AM |
658 | complain_overflow_signed, /* complain_on_overflow */ |
659 | bfd_elf_generic_reloc, /* special_function */ | |
660 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 661 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
662 | 0, /* src_mask */ |
663 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 664 | TRUE), /* pcrel_offset */ |
5bd4f169 | 665 | |
10ed1bba | 666 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
667 | HOWTO (R_PPC64_PLT32, /* type */ |
668 | 0, /* rightshift */ | |
669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
670 | 32, /* bitsize */ | |
b34976b6 | 671 | FALSE, /* pc_relative */ |
5bd4f169 AM |
672 | 0, /* bitpos */ |
673 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 674 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 675 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
5bd4f169 | 677 | 0, /* src_mask */ |
f5e87a1d | 678 | 0xffffffff, /* dst_mask */ |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
680 | |
681 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
682 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
683 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
684 | 0, /* rightshift */ | |
685 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
686 | 32, /* bitsize */ | |
b34976b6 | 687 | TRUE, /* pc_relative */ |
5bd4f169 AM |
688 | 0, /* bitpos */ |
689 | complain_overflow_signed, /* complain_on_overflow */ | |
690 | bfd_elf_generic_reloc, /* special_function */ | |
691 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 692 | FALSE, /* partial_inplace */ |
5bd4f169 | 693 | 0, /* src_mask */ |
f5e87a1d | 694 | 0xffffffff, /* dst_mask */ |
b34976b6 | 695 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
696 | |
697 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
698 | the symbol. */ | |
699 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
700 | 0, /* rightshift */ | |
701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
b34976b6 | 703 | FALSE, /* pc_relative */ |
5bd4f169 AM |
704 | 0, /* bitpos */ |
705 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 706 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 707 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 708 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
709 | 0, /* src_mask */ |
710 | 0xffff, /* dst_mask */ | |
b34976b6 | 711 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
712 | |
713 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
714 | the symbol. */ | |
715 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
716 | 16, /* rightshift */ | |
717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 16, /* bitsize */ | |
b34976b6 | 719 | FALSE, /* pc_relative */ |
5bd4f169 | 720 | 0, /* bitpos */ |
f9c6b907 | 721 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 722 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 723 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 724 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
725 | 0, /* src_mask */ |
726 | 0xffff, /* dst_mask */ | |
b34976b6 | 727 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
728 | |
729 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
730 | the symbol. */ | |
731 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
732 | 16, /* rightshift */ | |
733 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
734 | 16, /* bitsize */ | |
b34976b6 | 735 | FALSE, /* pc_relative */ |
5bd4f169 | 736 | 0, /* bitpos */ |
f9c6b907 | 737 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 738 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 739 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 740 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
741 | 0, /* src_mask */ |
742 | 0xffff, /* dst_mask */ | |
b34976b6 | 743 | FALSE), /* pcrel_offset */ |
5bd4f169 | 744 | |
c061c2d8 | 745 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
746 | HOWTO (R_PPC64_SECTOFF, /* type */ |
747 | 0, /* rightshift */ | |
c061c2d8 AM |
748 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
749 | 16, /* bitsize */ | |
b34976b6 | 750 | FALSE, /* pc_relative */ |
5bd4f169 | 751 | 0, /* bitpos */ |
b80eed39 | 752 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 753 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 754 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 755 | FALSE, /* partial_inplace */ |
5bd4f169 | 756 | 0, /* src_mask */ |
c061c2d8 | 757 | 0xffff, /* dst_mask */ |
b34976b6 | 758 | FALSE), /* pcrel_offset */ |
5bd4f169 | 759 | |
c061c2d8 | 760 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
761 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
762 | 0, /* rightshift */ | |
763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
764 | 16, /* bitsize */ | |
b34976b6 | 765 | FALSE, /* pc_relative */ |
5bd4f169 AM |
766 | 0, /* bitpos */ |
767 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 768 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 769 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 770 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
771 | 0, /* src_mask */ |
772 | 0xffff, /* dst_mask */ | |
b34976b6 | 773 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
774 | |
775 | /* 16-bit upper half section relative relocation. */ | |
776 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
777 | 16, /* rightshift */ | |
778 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
779 | 16, /* bitsize */ | |
b34976b6 | 780 | FALSE, /* pc_relative */ |
5bd4f169 | 781 | 0, /* bitpos */ |
f9c6b907 | 782 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 783 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 784 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 785 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
786 | 0, /* src_mask */ |
787 | 0xffff, /* dst_mask */ | |
b34976b6 | 788 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
789 | |
790 | /* 16-bit upper half adjusted section relative relocation. */ | |
791 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
792 | 16, /* rightshift */ | |
793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 16, /* bitsize */ | |
b34976b6 | 795 | FALSE, /* pc_relative */ |
5bd4f169 | 796 | 0, /* bitpos */ |
f9c6b907 | 797 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 798 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 799 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 800 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
801 | 0, /* src_mask */ |
802 | 0xffff, /* dst_mask */ | |
b34976b6 | 803 | FALSE), /* pcrel_offset */ |
5bd4f169 | 804 | |
04c9666a AM |
805 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
806 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
807 | 2, /* rightshift */ |
808 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
809 | 30, /* bitsize */ | |
b34976b6 | 810 | TRUE, /* pc_relative */ |
5bd4f169 AM |
811 | 0, /* bitpos */ |
812 | complain_overflow_dont, /* complain_on_overflow */ | |
813 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 814 | "R_PPC64_REL30", /* name */ |
b34976b6 | 815 | FALSE, /* partial_inplace */ |
d006db6c | 816 | 0, /* src_mask */ |
5bd4f169 | 817 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 818 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
819 | |
820 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
821 | ||
822 | /* A standard 64-bit relocation. */ | |
823 | HOWTO (R_PPC64_ADDR64, /* type */ | |
824 | 0, /* rightshift */ | |
825 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
826 | 64, /* bitsize */ | |
b34976b6 | 827 | FALSE, /* pc_relative */ |
5bd4f169 AM |
828 | 0, /* bitpos */ |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 832 | FALSE, /* partial_inplace */ |
5bd4f169 | 833 | 0, /* src_mask */ |
f5e87a1d | 834 | ONES (64), /* dst_mask */ |
b34976b6 | 835 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
836 | |
837 | /* The bits 32-47 of an address. */ | |
838 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
839 | 32, /* rightshift */ | |
840 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
841 | 16, /* bitsize */ | |
b34976b6 | 842 | FALSE, /* pc_relative */ |
5bd4f169 AM |
843 | 0, /* bitpos */ |
844 | complain_overflow_dont, /* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 847 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
848 | 0, /* src_mask */ |
849 | 0xffff, /* dst_mask */ | |
b34976b6 | 850 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
851 | |
852 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
853 | 16 bits, treated as a signed number, is negative. */ | |
854 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
855 | 32, /* rightshift */ | |
856 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 16, /* bitsize */ | |
b34976b6 | 858 | FALSE, /* pc_relative */ |
5bd4f169 AM |
859 | 0, /* bitpos */ |
860 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 861 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 862 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 863 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
864 | 0, /* src_mask */ |
865 | 0xffff, /* dst_mask */ | |
b34976b6 | 866 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
867 | |
868 | /* The bits 48-63 of an address. */ | |
869 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
870 | 48, /* rightshift */ | |
871 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
872 | 16, /* bitsize */ | |
b34976b6 | 873 | FALSE, /* pc_relative */ |
5bd4f169 AM |
874 | 0, /* bitpos */ |
875 | complain_overflow_dont, /* complain_on_overflow */ | |
876 | bfd_elf_generic_reloc, /* special_function */ | |
877 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 878 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
879 | 0, /* src_mask */ |
880 | 0xffff, /* dst_mask */ | |
b34976b6 | 881 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
882 | |
883 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
884 | 16 bits, treated as a signed number, is negative. */ | |
885 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
886 | 48, /* rightshift */ | |
887 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 16, /* bitsize */ | |
b34976b6 | 889 | FALSE, /* pc_relative */ |
5bd4f169 AM |
890 | 0, /* bitpos */ |
891 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 892 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 893 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 894 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
895 | 0, /* src_mask */ |
896 | 0xffff, /* dst_mask */ | |
b34976b6 | 897 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
898 | |
899 | /* Like ADDR64, but may be unaligned. */ | |
900 | HOWTO (R_PPC64_UADDR64, /* type */ | |
901 | 0, /* rightshift */ | |
902 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
903 | 64, /* bitsize */ | |
b34976b6 | 904 | FALSE, /* pc_relative */ |
5bd4f169 AM |
905 | 0, /* bitpos */ |
906 | complain_overflow_dont, /* complain_on_overflow */ | |
907 | bfd_elf_generic_reloc, /* special_function */ | |
908 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 909 | FALSE, /* partial_inplace */ |
5bd4f169 | 910 | 0, /* src_mask */ |
f5e87a1d | 911 | ONES (64), /* dst_mask */ |
b34976b6 | 912 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
913 | |
914 | /* 64-bit relative relocation. */ | |
915 | HOWTO (R_PPC64_REL64, /* type */ | |
916 | 0, /* rightshift */ | |
917 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
918 | 64, /* bitsize */ | |
b34976b6 | 919 | TRUE, /* pc_relative */ |
5bd4f169 AM |
920 | 0, /* bitpos */ |
921 | complain_overflow_dont, /* complain_on_overflow */ | |
922 | bfd_elf_generic_reloc, /* special_function */ | |
923 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 924 | FALSE, /* partial_inplace */ |
5bd4f169 | 925 | 0, /* src_mask */ |
f5e87a1d | 926 | ONES (64), /* dst_mask */ |
b34976b6 | 927 | TRUE), /* pcrel_offset */ |
5bd4f169 | 928 | |
cedb70c5 | 929 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
930 | HOWTO (R_PPC64_PLT64, /* type */ |
931 | 0, /* rightshift */ | |
932 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
933 | 64, /* bitsize */ | |
b34976b6 | 934 | FALSE, /* pc_relative */ |
5bd4f169 AM |
935 | 0, /* bitpos */ |
936 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 937 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 938 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 939 | FALSE, /* partial_inplace */ |
5bd4f169 | 940 | 0, /* src_mask */ |
f5e87a1d | 941 | ONES (64), /* dst_mask */ |
b34976b6 | 942 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
943 | |
944 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
945 | table. */ | |
946 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
947 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
948 | 0, /* rightshift */ | |
949 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
950 | 64, /* bitsize */ | |
b34976b6 | 951 | TRUE, /* pc_relative */ |
5bd4f169 AM |
952 | 0, /* bitpos */ |
953 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 954 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 955 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 956 | FALSE, /* partial_inplace */ |
5bd4f169 | 957 | 0, /* src_mask */ |
f5e87a1d | 958 | ONES (64), /* dst_mask */ |
b34976b6 | 959 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
960 | |
961 | /* 16 bit TOC-relative relocation. */ | |
962 | ||
963 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
964 | HOWTO (R_PPC64_TOC16, /* type */ | |
965 | 0, /* rightshift */ | |
966 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
967 | 16, /* bitsize */ | |
b34976b6 | 968 | FALSE, /* pc_relative */ |
5bd4f169 AM |
969 | 0, /* bitpos */ |
970 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 971 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 972 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 973 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
974 | 0, /* src_mask */ |
975 | 0xffff, /* dst_mask */ | |
b34976b6 | 976 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
977 | |
978 | /* 16 bit TOC-relative relocation without overflow. */ | |
979 | ||
980 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
981 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
982 | 0, /* rightshift */ | |
983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 16, /* bitsize */ | |
b34976b6 | 985 | FALSE, /* pc_relative */ |
5bd4f169 AM |
986 | 0, /* bitpos */ |
987 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 988 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 989 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 990 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
991 | 0, /* src_mask */ |
992 | 0xffff, /* dst_mask */ | |
b34976b6 | 993 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
994 | |
995 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
996 | ||
997 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
998 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
999 | 16, /* rightshift */ | |
1000 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1001 | 16, /* bitsize */ | |
b34976b6 | 1002 | FALSE, /* pc_relative */ |
5bd4f169 | 1003 | 0, /* bitpos */ |
f9c6b907 | 1004 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1005 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1006 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1007 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1008 | 0, /* src_mask */ |
1009 | 0xffff, /* dst_mask */ | |
b34976b6 | 1010 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1011 | |
1012 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1013 | contents of the low 16 bits, treated as a signed number, is | |
1014 | negative. */ | |
1015 | ||
1016 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1017 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1018 | 16, /* rightshift */ | |
1019 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1020 | 16, /* bitsize */ | |
b34976b6 | 1021 | FALSE, /* pc_relative */ |
5bd4f169 | 1022 | 0, /* bitpos */ |
f9c6b907 | 1023 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1024 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1025 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1026 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1027 | 0, /* src_mask */ |
1028 | 0xffff, /* dst_mask */ | |
b34976b6 | 1029 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1030 | |
1031 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1032 | ||
1033 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1034 | HOWTO (R_PPC64_TOC, /* type */ | |
1035 | 0, /* rightshift */ | |
1036 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1037 | 64, /* bitsize */ | |
b34976b6 | 1038 | FALSE, /* pc_relative */ |
5bd4f169 | 1039 | 0, /* bitpos */ |
b80eed39 | 1040 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1041 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1042 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1043 | FALSE, /* partial_inplace */ |
5bd4f169 | 1044 | 0, /* src_mask */ |
f5e87a1d | 1045 | ONES (64), /* dst_mask */ |
b34976b6 | 1046 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1047 | |
1048 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1049 | value to relocate may (!) refer to a PLT entry which the link | |
1050 | editor (a) may replace with the symbol value. If the link editor | |
1051 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1052 | entry and store the address to the new PLT entry in the GOT. | |
1053 | This permits lazy resolution of function symbols at run time. | |
1054 | The link editor may also skip all of this and just (c) emit a | |
1055 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1056 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1057 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1058 | 0, /* rightshift */ | |
1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1060 | 16, /* bitsize */ | |
b34976b6 | 1061 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1062 | 0, /* bitpos */ |
1063 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1064 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1065 | "R_PPC64_PLTGOT16", /* name */ |
1066 | FALSE, /* partial_inplace */ | |
1067 | 0, /* src_mask */ | |
1068 | 0xffff, /* dst_mask */ | |
1069 | FALSE), /* pcrel_offset */ | |
1070 | ||
1071 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1072 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1073 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1074 | 0, /* rightshift */ | |
1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 16, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_dont, /* complain_on_overflow */ | |
1080 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1081 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xffff, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | ||
1087 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1088 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1089 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1090 | 16, /* rightshift */ | |
1091 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1092 | 16, /* bitsize */ | |
1093 | FALSE, /* pc_relative */ | |
1094 | 0, /* bitpos */ | |
f9c6b907 | 1095 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1096 | ppc64_elf_unhandled_reloc, /* special_function */ |
1097 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1098 | FALSE, /* partial_inplace */ | |
1099 | 0, /* src_mask */ | |
1100 | 0xffff, /* dst_mask */ | |
1101 | FALSE), /* pcrel_offset */ | |
1102 | ||
1103 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1104 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1105 | is negative. */ | |
1106 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1107 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1108 | 16, /* rightshift */ | |
1109 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1110 | 16, /* bitsize */ | |
1111 | FALSE, /* pc_relative */ | |
1112 | 0, /* bitpos */ | |
f9c6b907 | 1113 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1114 | ppc64_elf_unhandled_reloc, /* special_function */ |
1115 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1116 | FALSE, /* partial_inplace */ | |
1117 | 0, /* src_mask */ | |
1118 | 0xffff, /* dst_mask */ | |
1119 | FALSE), /* pcrel_offset */ | |
1120 | ||
1121 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1122 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1123 | 0, /* rightshift */ | |
1124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 16, /* bitsize */ | |
1126 | FALSE, /* pc_relative */ | |
1127 | 0, /* bitpos */ | |
b80eed39 | 1128 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1129 | bfd_elf_generic_reloc, /* special_function */ |
1130 | "R_PPC64_ADDR16_DS", /* name */ | |
1131 | FALSE, /* partial_inplace */ | |
1132 | 0, /* src_mask */ | |
1133 | 0xfffc, /* dst_mask */ | |
1134 | FALSE), /* pcrel_offset */ | |
1135 | ||
1136 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1137 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1138 | 0, /* rightshift */ | |
1139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1140 | 16, /* bitsize */ | |
1141 | FALSE, /* pc_relative */ | |
1142 | 0, /* bitpos */ | |
1143 | complain_overflow_dont,/* complain_on_overflow */ | |
1144 | bfd_elf_generic_reloc, /* special_function */ | |
1145 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1146 | FALSE, /* partial_inplace */ | |
1147 | 0, /* src_mask */ | |
1148 | 0xfffc, /* dst_mask */ | |
1149 | FALSE), /* pcrel_offset */ | |
1150 | ||
1151 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1152 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1153 | 0, /* rightshift */ | |
1154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1155 | 16, /* bitsize */ | |
1156 | FALSE, /* pc_relative */ | |
1157 | 0, /* bitpos */ | |
1158 | complain_overflow_signed, /* complain_on_overflow */ | |
1159 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1160 | "R_PPC64_GOT16_DS", /* name */ | |
1161 | FALSE, /* partial_inplace */ | |
1162 | 0, /* src_mask */ | |
1163 | 0xfffc, /* dst_mask */ | |
1164 | FALSE), /* pcrel_offset */ | |
1165 | ||
1166 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1167 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1168 | 0, /* rightshift */ | |
1169 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1170 | 16, /* bitsize */ | |
1171 | FALSE, /* pc_relative */ | |
1172 | 0, /* bitpos */ | |
1173 | complain_overflow_dont, /* complain_on_overflow */ | |
1174 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1175 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1176 | FALSE, /* partial_inplace */ | |
1177 | 0, /* src_mask */ | |
1178 | 0xfffc, /* dst_mask */ | |
1179 | FALSE), /* pcrel_offset */ | |
1180 | ||
1181 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1182 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1183 | 0, /* rightshift */ | |
1184 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1185 | 16, /* bitsize */ | |
1186 | FALSE, /* pc_relative */ | |
1187 | 0, /* bitpos */ | |
1188 | complain_overflow_dont, /* complain_on_overflow */ | |
1189 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1190 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1191 | FALSE, /* partial_inplace */ | |
1192 | 0, /* src_mask */ | |
1193 | 0xfffc, /* dst_mask */ | |
1194 | FALSE), /* pcrel_offset */ | |
1195 | ||
1196 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1197 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1198 | 0, /* rightshift */ | |
1199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1200 | 16, /* bitsize */ | |
1201 | FALSE, /* pc_relative */ | |
1202 | 0, /* bitpos */ | |
b80eed39 | 1203 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1204 | ppc64_elf_sectoff_reloc, /* special_function */ |
1205 | "R_PPC64_SECTOFF_DS", /* name */ | |
1206 | FALSE, /* partial_inplace */ | |
1207 | 0, /* src_mask */ | |
1208 | 0xfffc, /* dst_mask */ | |
1209 | FALSE), /* pcrel_offset */ | |
1210 | ||
1211 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1212 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1213 | 0, /* rightshift */ | |
1214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 16, /* bitsize */ | |
1216 | FALSE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_dont, /* complain_on_overflow */ | |
1219 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1220 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0, /* src_mask */ | |
1223 | 0xfffc, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | ||
1226 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1227 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1228 | 0, /* rightshift */ | |
1229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1230 | 16, /* bitsize */ | |
1231 | FALSE, /* pc_relative */ | |
1232 | 0, /* bitpos */ | |
1233 | complain_overflow_signed, /* complain_on_overflow */ | |
1234 | ppc64_elf_toc_reloc, /* special_function */ | |
1235 | "R_PPC64_TOC16_DS", /* name */ | |
1236 | FALSE, /* partial_inplace */ | |
1237 | 0, /* src_mask */ | |
1238 | 0xfffc, /* dst_mask */ | |
1239 | FALSE), /* pcrel_offset */ | |
1240 | ||
1241 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1242 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1243 | 0, /* rightshift */ | |
1244 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1245 | 16, /* bitsize */ | |
1246 | FALSE, /* pc_relative */ | |
1247 | 0, /* bitpos */ | |
1248 | complain_overflow_dont, /* complain_on_overflow */ | |
1249 | ppc64_elf_toc_reloc, /* special_function */ | |
1250 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1251 | FALSE, /* partial_inplace */ | |
1252 | 0, /* src_mask */ | |
1253 | 0xfffc, /* dst_mask */ | |
1254 | FALSE), /* pcrel_offset */ | |
1255 | ||
1256 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1257 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1258 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1259 | 0, /* rightshift */ |
1260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1261 | 16, /* bitsize */ | |
1262 | FALSE, /* pc_relative */ | |
1263 | 0, /* bitpos */ | |
1264 | complain_overflow_signed, /* complain_on_overflow */ | |
1265 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1266 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1267 | FALSE, /* partial_inplace */ | |
1268 | 0, /* src_mask */ | |
1269 | 0xfffc, /* dst_mask */ | |
1270 | FALSE), /* pcrel_offset */ | |
1271 | ||
1272 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1273 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1274 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1275 | 0, /* rightshift */ | |
1276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1277 | 16, /* bitsize */ | |
1278 | FALSE, /* pc_relative */ | |
1279 | 0, /* bitpos */ | |
1280 | complain_overflow_dont, /* complain_on_overflow */ | |
1281 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1282 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1283 | FALSE, /* partial_inplace */ | |
1284 | 0, /* src_mask */ | |
1285 | 0xfffc, /* dst_mask */ | |
1286 | FALSE), /* pcrel_offset */ | |
1287 | ||
727fc41e | 1288 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1289 | HOWTO (R_PPC64_TLS, |
1290 | 0, /* rightshift */ | |
1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1292 | 32, /* bitsize */ | |
1293 | FALSE, /* pc_relative */ | |
1294 | 0, /* bitpos */ | |
1295 | complain_overflow_dont, /* complain_on_overflow */ | |
1296 | bfd_elf_generic_reloc, /* special_function */ | |
1297 | "R_PPC64_TLS", /* name */ | |
1298 | FALSE, /* partial_inplace */ | |
1299 | 0, /* src_mask */ | |
1300 | 0, /* dst_mask */ | |
1301 | FALSE), /* pcrel_offset */ | |
1302 | ||
727fc41e AM |
1303 | HOWTO (R_PPC64_TLSGD, |
1304 | 0, /* rightshift */ | |
1305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1306 | 32, /* bitsize */ | |
1307 | FALSE, /* pc_relative */ | |
1308 | 0, /* bitpos */ | |
1309 | complain_overflow_dont, /* complain_on_overflow */ | |
1310 | bfd_elf_generic_reloc, /* special_function */ | |
1311 | "R_PPC64_TLSGD", /* name */ | |
1312 | FALSE, /* partial_inplace */ | |
1313 | 0, /* src_mask */ | |
1314 | 0, /* dst_mask */ | |
1315 | FALSE), /* pcrel_offset */ | |
1316 | ||
1317 | HOWTO (R_PPC64_TLSLD, | |
1318 | 0, /* rightshift */ | |
1319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 32, /* bitsize */ | |
1321 | FALSE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_dont, /* complain_on_overflow */ | |
1324 | bfd_elf_generic_reloc, /* special_function */ | |
1325 | "R_PPC64_TLSLD", /* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0, /* src_mask */ | |
1328 | 0, /* dst_mask */ | |
1329 | FALSE), /* pcrel_offset */ | |
1330 | ||
3b421ab3 AM |
1331 | HOWTO (R_PPC64_TOCSAVE, |
1332 | 0, /* rightshift */ | |
1333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 32, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_dont, /* complain_on_overflow */ | |
1338 | bfd_elf_generic_reloc, /* special_function */ | |
1339 | "R_PPC64_TOCSAVE", /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
411e1bfb AM |
1345 | /* Computes the load module index of the load module that contains the |
1346 | definition of its TLS sym. */ | |
1347 | HOWTO (R_PPC64_DTPMOD64, | |
1348 | 0, /* rightshift */ | |
1349 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 64, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1355 | "R_PPC64_DTPMOD64", /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | ONES (64), /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* Computes a dtv-relative displacement, the difference between the value | |
1362 | of sym+add and the base address of the thread-local storage block that | |
1363 | contains the definition of sym, minus 0x8000. */ | |
1364 | HOWTO (R_PPC64_DTPREL64, | |
1365 | 0, /* rightshift */ | |
1366 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1367 | 64, /* bitsize */ | |
1368 | FALSE, /* pc_relative */ | |
1369 | 0, /* bitpos */ | |
1370 | complain_overflow_dont, /* complain_on_overflow */ | |
1371 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1372 | "R_PPC64_DTPREL64", /* name */ | |
1373 | FALSE, /* partial_inplace */ | |
1374 | 0, /* src_mask */ | |
1375 | ONES (64), /* dst_mask */ | |
1376 | FALSE), /* pcrel_offset */ | |
1377 | ||
1378 | /* A 16 bit dtprel reloc. */ | |
1379 | HOWTO (R_PPC64_DTPREL16, | |
1380 | 0, /* rightshift */ | |
1381 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1382 | 16, /* bitsize */ | |
1383 | FALSE, /* pc_relative */ | |
1384 | 0, /* bitpos */ | |
1385 | complain_overflow_signed, /* complain_on_overflow */ | |
1386 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1387 | "R_PPC64_DTPREL16", /* name */ | |
1388 | FALSE, /* partial_inplace */ | |
1389 | 0, /* src_mask */ | |
1390 | 0xffff, /* dst_mask */ | |
1391 | FALSE), /* pcrel_offset */ | |
1392 | ||
1393 | /* Like DTPREL16, but no overflow. */ | |
1394 | HOWTO (R_PPC64_DTPREL16_LO, | |
1395 | 0, /* rightshift */ | |
1396 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1397 | 16, /* bitsize */ | |
1398 | FALSE, /* pc_relative */ | |
1399 | 0, /* bitpos */ | |
1400 | complain_overflow_dont, /* complain_on_overflow */ | |
1401 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1402 | "R_PPC64_DTPREL16_LO", /* name */ | |
1403 | FALSE, /* partial_inplace */ | |
1404 | 0, /* src_mask */ | |
1405 | 0xffff, /* dst_mask */ | |
1406 | FALSE), /* pcrel_offset */ | |
1407 | ||
1408 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1409 | HOWTO (R_PPC64_DTPREL16_HI, | |
1410 | 16, /* rightshift */ | |
1411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1412 | 16, /* bitsize */ | |
1413 | FALSE, /* pc_relative */ | |
1414 | 0, /* bitpos */ | |
f9c6b907 | 1415 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1416 | ppc64_elf_unhandled_reloc, /* special_function */ |
1417 | "R_PPC64_DTPREL16_HI", /* name */ | |
1418 | FALSE, /* partial_inplace */ | |
1419 | 0, /* src_mask */ | |
1420 | 0xffff, /* dst_mask */ | |
1421 | FALSE), /* pcrel_offset */ | |
1422 | ||
1423 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1424 | HOWTO (R_PPC64_DTPREL16_HA, | |
1425 | 16, /* rightshift */ | |
1426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1427 | 16, /* bitsize */ | |
1428 | FALSE, /* pc_relative */ | |
1429 | 0, /* bitpos */ | |
f9c6b907 | 1430 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1431 | ppc64_elf_unhandled_reloc, /* special_function */ |
1432 | "R_PPC64_DTPREL16_HA", /* name */ | |
1433 | FALSE, /* partial_inplace */ | |
1434 | 0, /* src_mask */ | |
1435 | 0xffff, /* dst_mask */ | |
1436 | FALSE), /* pcrel_offset */ | |
1437 | ||
1438 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1439 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1440 | 32, /* rightshift */ | |
1441 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1442 | 16, /* bitsize */ | |
1443 | FALSE, /* pc_relative */ | |
1444 | 0, /* bitpos */ | |
1445 | complain_overflow_dont, /* complain_on_overflow */ | |
1446 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1447 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1448 | FALSE, /* partial_inplace */ | |
1449 | 0, /* src_mask */ | |
1450 | 0xffff, /* dst_mask */ | |
1451 | FALSE), /* pcrel_offset */ | |
1452 | ||
1453 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1454 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1455 | 32, /* rightshift */ | |
1456 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1457 | 16, /* bitsize */ | |
1458 | FALSE, /* pc_relative */ | |
1459 | 0, /* bitpos */ | |
1460 | complain_overflow_dont, /* complain_on_overflow */ | |
1461 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1462 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1463 | FALSE, /* partial_inplace */ | |
1464 | 0, /* src_mask */ | |
1465 | 0xffff, /* dst_mask */ | |
1466 | FALSE), /* pcrel_offset */ | |
1467 | ||
1468 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1469 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1470 | 48, /* rightshift */ | |
1471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1472 | 16, /* bitsize */ | |
1473 | FALSE, /* pc_relative */ | |
1474 | 0, /* bitpos */ | |
1475 | complain_overflow_dont, /* complain_on_overflow */ | |
1476 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1477 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1478 | FALSE, /* partial_inplace */ | |
1479 | 0, /* src_mask */ | |
1480 | 0xffff, /* dst_mask */ | |
1481 | FALSE), /* pcrel_offset */ | |
1482 | ||
1483 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1484 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1485 | 48, /* rightshift */ | |
1486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1487 | 16, /* bitsize */ | |
1488 | FALSE, /* pc_relative */ | |
1489 | 0, /* bitpos */ | |
1490 | complain_overflow_dont, /* complain_on_overflow */ | |
1491 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1492 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1493 | FALSE, /* partial_inplace */ | |
1494 | 0, /* src_mask */ | |
1495 | 0xffff, /* dst_mask */ | |
1496 | FALSE), /* pcrel_offset */ | |
1497 | ||
1498 | /* Like DTPREL16, but for insns with a DS field. */ | |
1499 | HOWTO (R_PPC64_DTPREL16_DS, | |
1500 | 0, /* rightshift */ | |
1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 16, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
1505 | complain_overflow_signed, /* complain_on_overflow */ | |
1506 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1507 | "R_PPC64_DTPREL16_DS", /* name */ | |
1508 | FALSE, /* partial_inplace */ | |
1509 | 0, /* src_mask */ | |
1510 | 0xfffc, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | ||
1513 | /* Like DTPREL16_DS, but no overflow. */ | |
1514 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1515 | 0, /* rightshift */ | |
1516 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1517 | 16, /* bitsize */ | |
1518 | FALSE, /* pc_relative */ | |
1519 | 0, /* bitpos */ | |
1520 | complain_overflow_dont, /* complain_on_overflow */ | |
1521 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1522 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1523 | FALSE, /* partial_inplace */ | |
1524 | 0, /* src_mask */ | |
1525 | 0xfffc, /* dst_mask */ | |
1526 | FALSE), /* pcrel_offset */ | |
1527 | ||
1528 | /* Computes a tp-relative displacement, the difference between the value of | |
1529 | sym+add and the value of the thread pointer (r13). */ | |
1530 | HOWTO (R_PPC64_TPREL64, | |
1531 | 0, /* rightshift */ | |
1532 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1533 | 64, /* bitsize */ | |
1534 | FALSE, /* pc_relative */ | |
1535 | 0, /* bitpos */ | |
1536 | complain_overflow_dont, /* complain_on_overflow */ | |
1537 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1538 | "R_PPC64_TPREL64", /* name */ | |
1539 | FALSE, /* partial_inplace */ | |
1540 | 0, /* src_mask */ | |
1541 | ONES (64), /* dst_mask */ | |
1542 | FALSE), /* pcrel_offset */ | |
1543 | ||
1544 | /* A 16 bit tprel reloc. */ | |
1545 | HOWTO (R_PPC64_TPREL16, | |
1546 | 0, /* rightshift */ | |
1547 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1548 | 16, /* bitsize */ | |
1549 | FALSE, /* pc_relative */ | |
1550 | 0, /* bitpos */ | |
1551 | complain_overflow_signed, /* complain_on_overflow */ | |
1552 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1553 | "R_PPC64_TPREL16", /* name */ | |
1554 | FALSE, /* partial_inplace */ | |
1555 | 0, /* src_mask */ | |
1556 | 0xffff, /* dst_mask */ | |
1557 | FALSE), /* pcrel_offset */ | |
1558 | ||
1559 | /* Like TPREL16, but no overflow. */ | |
1560 | HOWTO (R_PPC64_TPREL16_LO, | |
1561 | 0, /* rightshift */ | |
1562 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 16, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
1565 | 0, /* bitpos */ | |
1566 | complain_overflow_dont, /* complain_on_overflow */ | |
1567 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1568 | "R_PPC64_TPREL16_LO", /* name */ | |
1569 | FALSE, /* partial_inplace */ | |
1570 | 0, /* src_mask */ | |
1571 | 0xffff, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
1573 | ||
1574 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1575 | HOWTO (R_PPC64_TPREL16_HI, | |
1576 | 16, /* rightshift */ | |
1577 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1578 | 16, /* bitsize */ | |
1579 | FALSE, /* pc_relative */ | |
1580 | 0, /* bitpos */ | |
f9c6b907 | 1581 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1582 | ppc64_elf_unhandled_reloc, /* special_function */ |
1583 | "R_PPC64_TPREL16_HI", /* name */ | |
1584 | FALSE, /* partial_inplace */ | |
1585 | 0, /* src_mask */ | |
1586 | 0xffff, /* dst_mask */ | |
1587 | FALSE), /* pcrel_offset */ | |
1588 | ||
1589 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1590 | HOWTO (R_PPC64_TPREL16_HA, | |
1591 | 16, /* rightshift */ | |
1592 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1593 | 16, /* bitsize */ | |
1594 | FALSE, /* pc_relative */ | |
1595 | 0, /* bitpos */ | |
f9c6b907 | 1596 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1597 | ppc64_elf_unhandled_reloc, /* special_function */ |
1598 | "R_PPC64_TPREL16_HA", /* name */ | |
1599 | FALSE, /* partial_inplace */ | |
1600 | 0, /* src_mask */ | |
1601 | 0xffff, /* dst_mask */ | |
1602 | FALSE), /* pcrel_offset */ | |
1603 | ||
1604 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1605 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1606 | 32, /* rightshift */ | |
1607 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1608 | 16, /* bitsize */ | |
1609 | FALSE, /* pc_relative */ | |
1610 | 0, /* bitpos */ | |
1611 | complain_overflow_dont, /* complain_on_overflow */ | |
1612 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1613 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1614 | FALSE, /* partial_inplace */ | |
1615 | 0, /* src_mask */ | |
1616 | 0xffff, /* dst_mask */ | |
1617 | FALSE), /* pcrel_offset */ | |
1618 | ||
1619 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1620 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1621 | 32, /* rightshift */ | |
1622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1623 | 16, /* bitsize */ | |
1624 | FALSE, /* pc_relative */ | |
1625 | 0, /* bitpos */ | |
1626 | complain_overflow_dont, /* complain_on_overflow */ | |
1627 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1628 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1629 | FALSE, /* partial_inplace */ | |
1630 | 0, /* src_mask */ | |
1631 | 0xffff, /* dst_mask */ | |
1632 | FALSE), /* pcrel_offset */ | |
1633 | ||
1634 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1635 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1636 | 48, /* rightshift */ | |
1637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 16, /* bitsize */ | |
1639 | FALSE, /* pc_relative */ | |
1640 | 0, /* bitpos */ | |
1641 | complain_overflow_dont, /* complain_on_overflow */ | |
1642 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1643 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1644 | FALSE, /* partial_inplace */ | |
1645 | 0, /* src_mask */ | |
1646 | 0xffff, /* dst_mask */ | |
1647 | FALSE), /* pcrel_offset */ | |
1648 | ||
1649 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1650 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1651 | 48, /* rightshift */ | |
1652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 16, /* bitsize */ | |
1654 | FALSE, /* pc_relative */ | |
1655 | 0, /* bitpos */ | |
1656 | complain_overflow_dont, /* complain_on_overflow */ | |
1657 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1658 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1659 | FALSE, /* partial_inplace */ | |
1660 | 0, /* src_mask */ | |
1661 | 0xffff, /* dst_mask */ | |
1662 | FALSE), /* pcrel_offset */ | |
1663 | ||
1664 | /* Like TPREL16, but for insns with a DS field. */ | |
1665 | HOWTO (R_PPC64_TPREL16_DS, | |
1666 | 0, /* rightshift */ | |
1667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1668 | 16, /* bitsize */ | |
1669 | FALSE, /* pc_relative */ | |
1670 | 0, /* bitpos */ | |
1671 | complain_overflow_signed, /* complain_on_overflow */ | |
1672 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1673 | "R_PPC64_TPREL16_DS", /* name */ | |
1674 | FALSE, /* partial_inplace */ | |
1675 | 0, /* src_mask */ | |
1676 | 0xfffc, /* dst_mask */ | |
1677 | FALSE), /* pcrel_offset */ | |
1678 | ||
1679 | /* Like TPREL16_DS, but no overflow. */ | |
1680 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1681 | 0, /* rightshift */ | |
1682 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1683 | 16, /* bitsize */ | |
1684 | FALSE, /* pc_relative */ | |
1685 | 0, /* bitpos */ | |
1686 | complain_overflow_dont, /* complain_on_overflow */ | |
1687 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1688 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1689 | FALSE, /* partial_inplace */ | |
1690 | 0, /* src_mask */ | |
1691 | 0xfffc, /* dst_mask */ | |
1692 | FALSE), /* pcrel_offset */ | |
1693 | ||
1694 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1695 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1696 | to the first entry relative to the TOC base (r2). */ | |
1697 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1698 | 0, /* rightshift */ | |
1699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1700 | 16, /* bitsize */ | |
1701 | FALSE, /* pc_relative */ | |
1702 | 0, /* bitpos */ | |
1703 | complain_overflow_signed, /* complain_on_overflow */ | |
1704 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1705 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1706 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1707 | 0, /* src_mask */ |
1708 | 0xffff, /* dst_mask */ | |
b34976b6 | 1709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1710 | |
411e1bfb AM |
1711 | /* Like GOT_TLSGD16, but no overflow. */ |
1712 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1713 | 0, /* rightshift */ |
1714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1715 | 16, /* bitsize */ | |
b34976b6 | 1716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1717 | 0, /* bitpos */ |
1718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1719 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1720 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1721 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1722 | 0, /* src_mask */ |
1723 | 0xffff, /* dst_mask */ | |
b34976b6 | 1724 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1725 | |
411e1bfb AM |
1726 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1727 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1728 | 16, /* rightshift */ |
1729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1730 | 16, /* bitsize */ | |
b34976b6 | 1731 | FALSE, /* pc_relative */ |
5bd4f169 | 1732 | 0, /* bitpos */ |
f9c6b907 | 1733 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1734 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1735 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1736 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1737 | 0, /* src_mask */ |
1738 | 0xffff, /* dst_mask */ | |
b34976b6 | 1739 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1740 | |
411e1bfb AM |
1741 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1742 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1743 | 16, /* rightshift */ |
1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1745 | 16, /* bitsize */ | |
b34976b6 | 1746 | FALSE, /* pc_relative */ |
5bd4f169 | 1747 | 0, /* bitpos */ |
f9c6b907 | 1748 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1749 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1750 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1751 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1752 | 0, /* src_mask */ |
1753 | 0xffff, /* dst_mask */ | |
b34976b6 | 1754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1755 | |
411e1bfb AM |
1756 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1757 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1758 | first entry relative to the TOC base (r2). */ | |
1759 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1760 | 0, /* rightshift */ |
1761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1762 | 16, /* bitsize */ | |
b34976b6 | 1763 | FALSE, /* pc_relative */ |
5bd4f169 | 1764 | 0, /* bitpos */ |
411e1bfb AM |
1765 | complain_overflow_signed, /* complain_on_overflow */ |
1766 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1767 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1768 | FALSE, /* partial_inplace */ |
d006db6c | 1769 | 0, /* src_mask */ |
411e1bfb | 1770 | 0xffff, /* dst_mask */ |
b34976b6 | 1771 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1772 | |
411e1bfb AM |
1773 | /* Like GOT_TLSLD16, but no overflow. */ |
1774 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1775 | 0, /* rightshift */ |
1776 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1777 | 16, /* bitsize */ | |
b34976b6 | 1778 | FALSE, /* pc_relative */ |
5bd4f169 | 1779 | 0, /* bitpos */ |
411e1bfb AM |
1780 | complain_overflow_dont, /* complain_on_overflow */ |
1781 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1782 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1783 | FALSE, /* partial_inplace */ |
d006db6c | 1784 | 0, /* src_mask */ |
411e1bfb | 1785 | 0xffff, /* dst_mask */ |
b34976b6 | 1786 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1787 | |
411e1bfb AM |
1788 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1789 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1790 | 16, /* rightshift */ | |
5bd4f169 AM |
1791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1792 | 16, /* bitsize */ | |
b34976b6 | 1793 | FALSE, /* pc_relative */ |
5bd4f169 | 1794 | 0, /* bitpos */ |
f9c6b907 | 1795 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1796 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1797 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1798 | FALSE, /* partial_inplace */ |
d006db6c | 1799 | 0, /* src_mask */ |
411e1bfb | 1800 | 0xffff, /* dst_mask */ |
b34976b6 | 1801 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1802 | |
411e1bfb AM |
1803 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1804 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1805 | 16, /* rightshift */ | |
5bd4f169 AM |
1806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1807 | 16, /* bitsize */ | |
b34976b6 | 1808 | FALSE, /* pc_relative */ |
5bd4f169 | 1809 | 0, /* bitpos */ |
f9c6b907 | 1810 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1811 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1812 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1813 | FALSE, /* partial_inplace */ |
d006db6c | 1814 | 0, /* src_mask */ |
411e1bfb | 1815 | 0xffff, /* dst_mask */ |
b34976b6 | 1816 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1817 | |
411e1bfb AM |
1818 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1819 | the offset to the entry relative to the TOC base (r2). */ | |
1820 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1821 | 0, /* rightshift */ |
1822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1823 | 16, /* bitsize */ | |
b34976b6 | 1824 | FALSE, /* pc_relative */ |
5bd4f169 | 1825 | 0, /* bitpos */ |
411e1bfb | 1826 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1827 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1828 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1829 | FALSE, /* partial_inplace */ |
d006db6c | 1830 | 0, /* src_mask */ |
5bd4f169 | 1831 | 0xfffc, /* dst_mask */ |
b34976b6 | 1832 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1833 | |
411e1bfb AM |
1834 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1835 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1836 | 0, /* rightshift */ |
c061c2d8 AM |
1837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1838 | 16, /* bitsize */ | |
b34976b6 | 1839 | FALSE, /* pc_relative */ |
5bd4f169 | 1840 | 0, /* bitpos */ |
411e1bfb AM |
1841 | complain_overflow_dont, /* complain_on_overflow */ |
1842 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1843 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1844 | FALSE, /* partial_inplace */ |
d006db6c | 1845 | 0, /* src_mask */ |
c061c2d8 | 1846 | 0xfffc, /* dst_mask */ |
b34976b6 | 1847 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1848 | |
411e1bfb AM |
1849 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1850 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1851 | 16, /* rightshift */ | |
5bd4f169 AM |
1852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1853 | 16, /* bitsize */ | |
b34976b6 | 1854 | FALSE, /* pc_relative */ |
5bd4f169 | 1855 | 0, /* bitpos */ |
f9c6b907 | 1856 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1857 | ppc64_elf_unhandled_reloc, /* special_function */ |
1858 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1859 | FALSE, /* partial_inplace */ |
d006db6c | 1860 | 0, /* src_mask */ |
411e1bfb | 1861 | 0xffff, /* dst_mask */ |
b34976b6 | 1862 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1863 | |
411e1bfb AM |
1864 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1865 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1866 | 16, /* rightshift */ | |
1867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1868 | 16, /* bitsize */ | |
1869 | FALSE, /* pc_relative */ | |
1870 | 0, /* bitpos */ | |
f9c6b907 | 1871 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1872 | ppc64_elf_unhandled_reloc, /* special_function */ |
1873 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1874 | FALSE, /* partial_inplace */ | |
1875 | 0, /* src_mask */ | |
1876 | 0xffff, /* dst_mask */ | |
1877 | FALSE), /* pcrel_offset */ | |
1878 | ||
1879 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1880 | offset to the entry relative to the TOC base (r2). */ | |
1881 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1882 | 0, /* rightshift */ |
1883 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1884 | 16, /* bitsize */ | |
b34976b6 | 1885 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1886 | 0, /* bitpos */ |
1887 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1888 | ppc64_elf_unhandled_reloc, /* special_function */ |
1889 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1890 | FALSE, /* partial_inplace */ |
d006db6c | 1891 | 0, /* src_mask */ |
ad8e1ba5 | 1892 | 0xfffc, /* dst_mask */ |
b34976b6 | 1893 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1894 | |
411e1bfb AM |
1895 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1896 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1897 | 0, /* rightshift */ |
1898 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1899 | 16, /* bitsize */ | |
b34976b6 | 1900 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1901 | 0, /* bitpos */ |
1902 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1903 | ppc64_elf_unhandled_reloc, /* special_function */ |
1904 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1905 | FALSE, /* partial_inplace */ |
d006db6c | 1906 | 0, /* src_mask */ |
ad8e1ba5 | 1907 | 0xfffc, /* dst_mask */ |
b34976b6 | 1908 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1909 | |
411e1bfb AM |
1910 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1911 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1912 | 16, /* rightshift */ | |
5bd4f169 AM |
1913 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1914 | 16, /* bitsize */ | |
b34976b6 | 1915 | FALSE, /* pc_relative */ |
5bd4f169 | 1916 | 0, /* bitpos */ |
f9c6b907 | 1917 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1918 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1919 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1920 | FALSE, /* partial_inplace */ |
d006db6c | 1921 | 0, /* src_mask */ |
411e1bfb | 1922 | 0xffff, /* dst_mask */ |
b34976b6 | 1923 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1924 | |
411e1bfb AM |
1925 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1926 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1927 | 16, /* rightshift */ | |
5bd4f169 AM |
1928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1929 | 16, /* bitsize */ | |
b34976b6 | 1930 | FALSE, /* pc_relative */ |
5bd4f169 | 1931 | 0, /* bitpos */ |
f9c6b907 | 1932 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1933 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1934 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1935 | FALSE, /* partial_inplace */ |
d006db6c | 1936 | 0, /* src_mask */ |
411e1bfb | 1937 | 0xffff, /* dst_mask */ |
b34976b6 | 1938 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1939 | |
25f23106 AM |
1940 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1941 | 0, /* rightshift */ | |
1942 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1943 | 0, /* bitsize */ | |
1944 | FALSE, /* pc_relative */ | |
1945 | 0, /* bitpos */ | |
1946 | complain_overflow_dont, /* complain_on_overflow */ | |
1947 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1948 | "R_PPC64_JMP_IREL", /* name */ | |
1949 | FALSE, /* partial_inplace */ | |
1950 | 0, /* src_mask */ | |
1951 | 0, /* dst_mask */ | |
1952 | FALSE), /* pcrel_offset */ | |
1953 | ||
e054468f AM |
1954 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1955 | 0, /* rightshift */ | |
1956 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1957 | 64, /* bitsize */ | |
1958 | FALSE, /* pc_relative */ | |
1959 | 0, /* bitpos */ | |
1960 | complain_overflow_dont, /* complain_on_overflow */ | |
1961 | bfd_elf_generic_reloc, /* special_function */ | |
1962 | "R_PPC64_IRELATIVE", /* name */ | |
1963 | FALSE, /* partial_inplace */ | |
1964 | 0, /* src_mask */ | |
1965 | ONES (64), /* dst_mask */ | |
1966 | FALSE), /* pcrel_offset */ | |
1967 | ||
25f23106 AM |
1968 | /* A 16 bit relative relocation. */ |
1969 | HOWTO (R_PPC64_REL16, /* type */ | |
1970 | 0, /* rightshift */ | |
1971 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1972 | 16, /* bitsize */ | |
1973 | TRUE, /* pc_relative */ | |
1974 | 0, /* bitpos */ | |
b80eed39 | 1975 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1976 | bfd_elf_generic_reloc, /* special_function */ |
1977 | "R_PPC64_REL16", /* name */ | |
1978 | FALSE, /* partial_inplace */ | |
1979 | 0, /* src_mask */ | |
1980 | 0xffff, /* dst_mask */ | |
1981 | TRUE), /* pcrel_offset */ | |
1982 | ||
1983 | /* A 16 bit relative relocation without overflow. */ | |
1984 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1985 | 0, /* rightshift */ | |
1986 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1987 | 16, /* bitsize */ | |
1988 | TRUE, /* pc_relative */ | |
1989 | 0, /* bitpos */ | |
1990 | complain_overflow_dont,/* complain_on_overflow */ | |
1991 | bfd_elf_generic_reloc, /* special_function */ | |
1992 | "R_PPC64_REL16_LO", /* name */ | |
1993 | FALSE, /* partial_inplace */ | |
1994 | 0, /* src_mask */ | |
1995 | 0xffff, /* dst_mask */ | |
1996 | TRUE), /* pcrel_offset */ | |
1997 | ||
1998 | /* The high order 16 bits of a relative address. */ | |
1999 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2000 | 16, /* rightshift */ | |
2001 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2002 | 16, /* bitsize */ | |
2003 | TRUE, /* pc_relative */ | |
2004 | 0, /* bitpos */ | |
f9c6b907 | 2005 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2006 | bfd_elf_generic_reloc, /* special_function */ |
2007 | "R_PPC64_REL16_HI", /* name */ | |
2008 | FALSE, /* partial_inplace */ | |
2009 | 0, /* src_mask */ | |
2010 | 0xffff, /* dst_mask */ | |
2011 | TRUE), /* pcrel_offset */ | |
2012 | ||
2013 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2014 | the low 16 bits, treated as a signed number, is negative. */ | |
2015 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2016 | 16, /* rightshift */ | |
2017 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2018 | 16, /* bitsize */ | |
2019 | TRUE, /* pc_relative */ | |
2020 | 0, /* bitpos */ | |
f9c6b907 | 2021 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2022 | ppc64_elf_ha_reloc, /* special_function */ |
2023 | "R_PPC64_REL16_HA", /* name */ | |
2024 | FALSE, /* partial_inplace */ | |
2025 | 0, /* src_mask */ | |
2026 | 0xffff, /* dst_mask */ | |
2027 | TRUE), /* pcrel_offset */ | |
2028 | ||
a680de9a PB |
2029 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2030 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2031 | 16, /* rightshift */ | |
2032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2033 | 16, /* bitsize */ | |
2034 | TRUE, /* pc_relative */ | |
2035 | 0, /* bitpos */ | |
2036 | complain_overflow_signed, /* complain_on_overflow */ | |
2037 | ppc64_elf_ha_reloc, /* special_function */ | |
2038 | "R_PPC64_REL16DX_HA", /* name */ | |
2039 | FALSE, /* partial_inplace */ | |
2040 | 0, /* src_mask */ | |
2041 | 0x1fffc1, /* dst_mask */ | |
2042 | TRUE), /* pcrel_offset */ | |
2043 | ||
f9c6b907 AM |
2044 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2045 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2046 | 16, /* rightshift */ | |
2047 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2048 | 16, /* bitsize */ | |
2049 | FALSE, /* pc_relative */ | |
2050 | 0, /* bitpos */ | |
2051 | complain_overflow_dont, /* complain_on_overflow */ | |
2052 | bfd_elf_generic_reloc, /* special_function */ | |
2053 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2054 | FALSE, /* partial_inplace */ | |
2055 | 0, /* src_mask */ | |
2056 | 0xffff, /* dst_mask */ | |
2057 | FALSE), /* pcrel_offset */ | |
2058 | ||
2059 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2060 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2061 | 16, /* rightshift */ | |
2062 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2063 | 16, /* bitsize */ | |
2064 | FALSE, /* pc_relative */ | |
2065 | 0, /* bitpos */ | |
2066 | complain_overflow_dont, /* complain_on_overflow */ | |
2067 | ppc64_elf_ha_reloc, /* special_function */ | |
2068 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2069 | FALSE, /* partial_inplace */ | |
2070 | 0, /* src_mask */ | |
2071 | 0xffff, /* dst_mask */ | |
2072 | FALSE), /* pcrel_offset */ | |
2073 | ||
2074 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2075 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2076 | 16, /* rightshift */ | |
2077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2078 | 16, /* bitsize */ | |
2079 | FALSE, /* pc_relative */ | |
2080 | 0, /* bitpos */ | |
2081 | complain_overflow_dont, /* complain_on_overflow */ | |
2082 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2083 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2084 | FALSE, /* partial_inplace */ | |
2085 | 0, /* src_mask */ | |
2086 | 0xffff, /* dst_mask */ | |
2087 | FALSE), /* pcrel_offset */ | |
2088 | ||
2089 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2090 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2091 | 16, /* rightshift */ | |
2092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2093 | 16, /* bitsize */ | |
2094 | FALSE, /* pc_relative */ | |
2095 | 0, /* bitpos */ | |
2096 | complain_overflow_dont, /* complain_on_overflow */ | |
2097 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2098 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2099 | FALSE, /* partial_inplace */ | |
2100 | 0, /* src_mask */ | |
2101 | 0xffff, /* dst_mask */ | |
2102 | FALSE), /* pcrel_offset */ | |
2103 | ||
2104 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2105 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2106 | 16, /* rightshift */ | |
2107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2108 | 16, /* bitsize */ | |
2109 | FALSE, /* pc_relative */ | |
2110 | 0, /* bitpos */ | |
2111 | complain_overflow_dont, /* complain_on_overflow */ | |
2112 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2113 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2114 | FALSE, /* partial_inplace */ | |
2115 | 0, /* src_mask */ | |
2116 | 0xffff, /* dst_mask */ | |
2117 | FALSE), /* pcrel_offset */ | |
2118 | ||
2119 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2120 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2121 | 16, /* rightshift */ | |
2122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2123 | 16, /* bitsize */ | |
2124 | FALSE, /* pc_relative */ | |
2125 | 0, /* bitpos */ | |
2126 | complain_overflow_dont, /* complain_on_overflow */ | |
2127 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2128 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2129 | FALSE, /* partial_inplace */ | |
2130 | 0, /* src_mask */ | |
2131 | 0xffff, /* dst_mask */ | |
2132 | FALSE), /* pcrel_offset */ | |
2133 | ||
006589cf AM |
2134 | /* Marker reloc on ELFv2 large-model function entry. */ |
2135 | HOWTO (R_PPC64_ENTRY, | |
2136 | 0, /* rightshift */ | |
2137 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2138 | 32, /* bitsize */ | |
2139 | FALSE, /* pc_relative */ | |
2140 | 0, /* bitpos */ | |
2141 | complain_overflow_dont, /* complain_on_overflow */ | |
2142 | bfd_elf_generic_reloc, /* special_function */ | |
2143 | "R_PPC64_ENTRY", /* name */ | |
2144 | FALSE, /* partial_inplace */ | |
2145 | 0, /* src_mask */ | |
2146 | 0, /* dst_mask */ | |
2147 | FALSE), /* pcrel_offset */ | |
2148 | ||
45965137 AM |
2149 | /* Like ADDR64, but use local entry point of function. */ |
2150 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2151 | 0, /* rightshift */ | |
2152 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2153 | 64, /* bitsize */ | |
2154 | FALSE, /* pc_relative */ | |
2155 | 0, /* bitpos */ | |
2156 | complain_overflow_dont, /* complain_on_overflow */ | |
2157 | bfd_elf_generic_reloc, /* special_function */ | |
2158 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2159 | FALSE, /* partial_inplace */ | |
2160 | 0, /* src_mask */ | |
2161 | ONES (64), /* dst_mask */ | |
2162 | FALSE), /* pcrel_offset */ | |
2163 | ||
5bd4f169 AM |
2164 | /* GNU extension to record C++ vtable hierarchy. */ |
2165 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2166 | 0, /* rightshift */ | |
2167 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2168 | 0, /* bitsize */ | |
b34976b6 | 2169 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2170 | 0, /* bitpos */ |
2171 | complain_overflow_dont, /* complain_on_overflow */ | |
2172 | NULL, /* special_function */ | |
2173 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2174 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2175 | 0, /* src_mask */ |
2176 | 0, /* dst_mask */ | |
b34976b6 | 2177 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2178 | |
2179 | /* GNU extension to record C++ vtable member usage. */ | |
2180 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2181 | 0, /* rightshift */ | |
2182 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2183 | 0, /* bitsize */ | |
b34976b6 | 2184 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2185 | 0, /* bitpos */ |
2186 | complain_overflow_dont, /* complain_on_overflow */ | |
2187 | NULL, /* special_function */ | |
2188 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2189 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2190 | 0, /* src_mask */ |
2191 | 0, /* dst_mask */ | |
b34976b6 | 2192 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2193 | }; |
2194 | ||
2195 | \f | |
2196 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2197 | be done. */ | |
2198 | ||
2199 | static void | |
4ce794b7 | 2200 | ppc_howto_init (void) |
5bd4f169 AM |
2201 | { |
2202 | unsigned int i, type; | |
2203 | ||
a4b6fadd | 2204 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2205 | { |
2206 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2207 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2208 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2209 | } | |
2210 | } | |
2211 | ||
2212 | static reloc_howto_type * | |
4ce794b7 AM |
2213 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2214 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2215 | { |
411e1bfb | 2216 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2217 | |
2218 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2219 | /* Initialize howto table if needed. */ | |
2220 | ppc_howto_init (); | |
2221 | ||
4ce794b7 | 2222 | switch (code) |
5bd4f169 AM |
2223 | { |
2224 | default: | |
4ce794b7 | 2225 | return NULL; |
5bd4f169 | 2226 | |
411e1bfb AM |
2227 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2228 | break; | |
2229 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2230 | break; | |
2231 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2232 | break; | |
2233 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2234 | break; | |
2235 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2236 | break; | |
2237 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2238 | break; | |
f9c6b907 AM |
2239 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2240 | break; | |
411e1bfb | 2241 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2242 | break; |
f9c6b907 AM |
2243 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2244 | break; | |
411e1bfb | 2245 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2246 | break; |
411e1bfb | 2247 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2248 | break; |
411e1bfb | 2249 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2250 | break; |
411e1bfb | 2251 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2252 | break; |
411e1bfb | 2253 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2254 | break; |
411e1bfb | 2255 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2256 | break; |
411e1bfb | 2257 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2258 | break; |
411e1bfb | 2259 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2260 | break; |
411e1bfb | 2261 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2262 | break; |
411e1bfb | 2263 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2264 | break; |
411e1bfb | 2265 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2266 | break; |
411e1bfb | 2267 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2268 | break; |
411e1bfb | 2269 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2270 | break; |
411e1bfb | 2271 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2272 | break; |
411e1bfb | 2273 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2274 | break; |
411e1bfb | 2275 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2276 | break; |
411e1bfb | 2277 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2278 | break; |
411e1bfb | 2279 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2280 | break; |
411e1bfb | 2281 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2282 | break; |
411e1bfb | 2283 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2284 | break; |
411e1bfb | 2285 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2286 | break; |
411e1bfb | 2287 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2288 | break; |
411e1bfb | 2289 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2290 | break; |
411e1bfb | 2291 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2292 | break; |
411e1bfb | 2293 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2294 | break; |
411e1bfb | 2295 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2296 | break; |
411e1bfb | 2297 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2298 | break; |
411e1bfb | 2299 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2300 | break; |
411e1bfb | 2301 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2302 | break; |
411e1bfb | 2303 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2304 | break; |
411e1bfb | 2305 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2306 | break; |
411e1bfb | 2307 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2308 | break; |
411e1bfb | 2309 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2310 | break; |
411e1bfb | 2311 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2312 | break; |
411e1bfb | 2313 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2314 | break; |
411e1bfb | 2315 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2316 | break; |
411e1bfb | 2317 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2318 | break; |
411e1bfb | 2319 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2320 | break; |
411e1bfb | 2321 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2322 | break; |
411e1bfb | 2323 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2324 | break; |
411e1bfb | 2325 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2326 | break; |
411e1bfb | 2327 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2328 | break; |
411e1bfb | 2329 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2330 | break; |
411e1bfb | 2331 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2332 | break; |
411e1bfb | 2333 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2334 | break; |
411e1bfb | 2335 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2336 | break; |
411e1bfb | 2337 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2338 | break; |
411e1bfb | 2339 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2340 | break; |
411e1bfb | 2341 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2342 | break; |
411e1bfb | 2343 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2344 | break; |
411e1bfb | 2345 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2346 | break; |
411e1bfb | 2347 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2348 | break; |
411e1bfb | 2349 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2350 | break; |
727fc41e AM |
2351 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2352 | break; | |
2353 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2354 | break; | |
411e1bfb | 2355 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2356 | break; |
411e1bfb | 2357 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2358 | break; |
411e1bfb | 2359 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2360 | break; |
411e1bfb | 2361 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2362 | break; |
f9c6b907 AM |
2363 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2364 | break; | |
411e1bfb | 2365 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2366 | break; |
f9c6b907 AM |
2367 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2368 | break; | |
411e1bfb | 2369 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2370 | break; |
411e1bfb AM |
2371 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2372 | break; | |
2373 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2374 | break; | |
2375 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2376 | break; | |
f9c6b907 AM |
2377 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2378 | break; | |
411e1bfb AM |
2379 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2380 | break; | |
f9c6b907 AM |
2381 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2382 | break; | |
411e1bfb AM |
2383 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2384 | break; | |
2385 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2386 | break; | |
2387 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2388 | break; | |
2389 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2390 | break; | |
2391 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2392 | break; | |
2393 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2394 | break; | |
2395 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2396 | break; | |
2397 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2398 | break; | |
2399 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2400 | break; | |
2401 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2402 | break; | |
2403 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2404 | break; | |
2405 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2406 | break; | |
2407 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2408 | break; | |
2409 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2410 | break; | |
2411 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2412 | break; | |
2413 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2414 | break; | |
2415 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2416 | break; | |
2417 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2418 | break; | |
2419 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2420 | break; | |
2421 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2422 | break; | |
2423 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2424 | break; | |
2425 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2426 | break; | |
2427 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2428 | break; | |
2429 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2430 | break; | |
2431 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2432 | break; | |
2433 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2434 | break; | |
2435 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2436 | break; | |
2437 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2438 | break; | |
2439 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2440 | break; | |
25f23106 AM |
2441 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2442 | break; | |
2443 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2444 | break; | |
2445 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2446 | break; | |
2447 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2448 | break; | |
a680de9a PB |
2449 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2450 | break; | |
006589cf AM |
2451 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2452 | break; | |
45965137 AM |
2453 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2454 | break; | |
411e1bfb AM |
2455 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2456 | break; | |
2457 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2458 | break; |
2459 | } | |
2460 | ||
4ce794b7 | 2461 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2462 | }; |
2463 | ||
157090f7 AM |
2464 | static reloc_howto_type * |
2465 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2466 | const char *r_name) | |
2467 | { | |
2468 | unsigned int i; | |
2469 | ||
a4b6fadd | 2470 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2471 | if (ppc64_elf_howto_raw[i].name != NULL |
2472 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2473 | return &ppc64_elf_howto_raw[i]; | |
2474 | ||
2475 | return NULL; | |
2476 | } | |
2477 | ||
5bd4f169 AM |
2478 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2479 | ||
2480 | static void | |
4ce794b7 AM |
2481 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2482 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2483 | { |
65f38f15 AM |
2484 | unsigned int type; |
2485 | ||
ef60b7ff | 2486 | /* Initialize howto table if needed. */ |
5bd4f169 | 2487 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2488 | ppc_howto_init (); |
2489 | ||
65f38f15 | 2490 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2491 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d JJ |
2492 | { |
2493 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2494 | abfd, (int) type); |
2495 | type = R_PPC64_NONE; | |
d0fb9a8d | 2496 | } |
65f38f15 | 2497 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2498 | } |
2499 | ||
04c9666a | 2500 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2501 | |
2502 | static bfd_reloc_status_type | |
4ce794b7 AM |
2503 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2504 | void *data, asection *input_section, | |
2505 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2506 | { |
a680de9a PB |
2507 | enum elf_ppc64_reloc_type r_type; |
2508 | long insn; | |
2509 | bfd_size_type octets; | |
2510 | bfd_vma value; | |
2511 | ||
805fc799 AM |
2512 | /* If this is a relocatable link (output_bfd test tells us), just |
2513 | call the generic function. Any adjustment will be done at final | |
2514 | link time. */ | |
2515 | if (output_bfd != NULL) | |
cedb70c5 | 2516 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2517 | input_section, output_bfd, error_message); |
2518 | ||
2519 | /* Adjust the addend for sign extension of the low 16 bits. | |
2520 | We won't actually be using the low 16 bits, so trashing them | |
2521 | doesn't matter. */ | |
2522 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2523 | r_type = reloc_entry->howto->type; |
2524 | if (r_type != R_PPC64_REL16DX_HA) | |
2525 | return bfd_reloc_continue; | |
2526 | ||
2527 | value = 0; | |
2528 | if (!bfd_is_com_section (symbol->section)) | |
2529 | value = symbol->value; | |
2530 | value += (reloc_entry->addend | |
2531 | + symbol->section->output_offset | |
2532 | + symbol->section->output_section->vma); | |
2533 | value -= (reloc_entry->address | |
2534 | + input_section->output_offset | |
2535 | + input_section->output_section->vma); | |
2536 | value = (bfd_signed_vma) value >> 16; | |
2537 | ||
2538 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2539 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2540 | insn &= ~0x1fffc1; | |
2541 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2542 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2543 | if (value + 0x8000 > 0xffff) | |
2544 | return bfd_reloc_overflow; | |
2545 | return bfd_reloc_ok; | |
805fc799 | 2546 | } |
5bd4f169 | 2547 | |
2441e016 AM |
2548 | static bfd_reloc_status_type |
2549 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2550 | void *data, asection *input_section, | |
2551 | bfd *output_bfd, char **error_message) | |
2552 | { | |
2553 | if (output_bfd != NULL) | |
2554 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2555 | input_section, output_bfd, error_message); | |
2556 | ||
699733f6 AM |
2557 | if (strcmp (symbol->section->name, ".opd") == 0 |
2558 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2559 | { |
2560 | bfd_vma dest = opd_entry_value (symbol->section, | |
2561 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2562 | NULL, NULL, FALSE); |
2441e016 AM |
2563 | if (dest != (bfd_vma) -1) |
2564 | reloc_entry->addend = dest - (symbol->value | |
2565 | + symbol->section->output_section->vma | |
2566 | + symbol->section->output_offset); | |
2567 | } | |
810d4e75 AM |
2568 | else |
2569 | { | |
2570 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2571 | ||
2572 | if (symbol->section->owner != abfd | |
9f284bf9 | 2573 | && symbol->section->owner != NULL |
810d4e75 AM |
2574 | && abiversion (symbol->section->owner) >= 2) |
2575 | { | |
2576 | unsigned int i; | |
2577 | ||
2578 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2579 | { | |
2580 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2581 | ||
2582 | if (strcmp (symdef->name, symbol->name) == 0) | |
2583 | { | |
2584 | elfsym = (elf_symbol_type *) symdef; | |
2585 | break; | |
2586 | } | |
2587 | } | |
2588 | } | |
2589 | reloc_entry->addend | |
2590 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2591 | } | |
2441e016 AM |
2592 | return bfd_reloc_continue; |
2593 | } | |
2594 | ||
805fc799 | 2595 | static bfd_reloc_status_type |
4ce794b7 AM |
2596 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2597 | void *data, asection *input_section, | |
2598 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2599 | { |
2600 | long insn; | |
04c9666a | 2601 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2602 | bfd_size_type octets; |
794e51c0 AM |
2603 | /* Assume 'at' branch hints. */ |
2604 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2605 | |
2606 | /* If this is a relocatable link (output_bfd test tells us), just | |
2607 | call the generic function. Any adjustment will be done at final | |
2608 | link time. */ | |
5bd4f169 | 2609 | if (output_bfd != NULL) |
cedb70c5 | 2610 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2611 | input_section, output_bfd, error_message); |
2612 | ||
2613 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2614 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2615 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2616 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2617 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2618 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2619 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2620 | |
794e51c0 | 2621 | if (is_isa_v2) |
5bd4f169 | 2622 | { |
805fc799 AM |
2623 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2624 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2625 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2626 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2627 | insn |= 0x02 << 21; | |
2628 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2629 | insn |= 0x08 << 21; | |
2630 | else | |
2441e016 | 2631 | goto out; |
5bd4f169 | 2632 | } |
805fc799 AM |
2633 | else |
2634 | { | |
2635 | bfd_vma target = 0; | |
2636 | bfd_vma from; | |
5bd4f169 | 2637 | |
805fc799 AM |
2638 | if (!bfd_is_com_section (symbol->section)) |
2639 | target = symbol->value; | |
2640 | target += symbol->section->output_section->vma; | |
2641 | target += symbol->section->output_offset; | |
2642 | target += reloc_entry->addend; | |
5bd4f169 | 2643 | |
805fc799 AM |
2644 | from = (reloc_entry->address |
2645 | + input_section->output_offset | |
2646 | + input_section->output_section->vma); | |
5bd4f169 | 2647 | |
805fc799 AM |
2648 | /* Invert 'y' bit if not the default. */ |
2649 | if ((bfd_signed_vma) (target - from) < 0) | |
2650 | insn ^= 0x01 << 21; | |
2651 | } | |
4ce794b7 | 2652 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2653 | out: |
2654 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2655 | input_section, output_bfd, error_message); | |
805fc799 | 2656 | } |
5bd4f169 | 2657 | |
805fc799 | 2658 | static bfd_reloc_status_type |
4ce794b7 AM |
2659 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2660 | void *data, asection *input_section, | |
2661 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2662 | { |
2663 | /* If this is a relocatable link (output_bfd test tells us), just | |
2664 | call the generic function. Any adjustment will be done at final | |
2665 | link time. */ | |
2666 | if (output_bfd != NULL) | |
cedb70c5 | 2667 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2668 | input_section, output_bfd, error_message); |
5bd4f169 | 2669 | |
805fc799 AM |
2670 | /* Subtract the symbol section base address. */ |
2671 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2672 | return bfd_reloc_continue; |
2673 | } | |
2674 | ||
805fc799 | 2675 | static bfd_reloc_status_type |
4ce794b7 AM |
2676 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2677 | void *data, asection *input_section, | |
2678 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2679 | { |
2680 | /* If this is a relocatable link (output_bfd test tells us), just | |
2681 | call the generic function. Any adjustment will be done at final | |
2682 | link time. */ | |
2683 | if (output_bfd != NULL) | |
cedb70c5 | 2684 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2685 | input_section, output_bfd, error_message); |
2686 | ||
2687 | /* Subtract the symbol section base address. */ | |
2688 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2689 | ||
2690 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2691 | reloc_entry->addend += 0x8000; | |
2692 | return bfd_reloc_continue; | |
2693 | } | |
2694 | ||
2695 | static bfd_reloc_status_type | |
4ce794b7 AM |
2696 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2697 | void *data, asection *input_section, | |
2698 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2699 | { |
2700 | bfd_vma TOCstart; | |
2701 | ||
2702 | /* If this is a relocatable link (output_bfd test tells us), just | |
2703 | call the generic function. Any adjustment will be done at final | |
2704 | link time. */ | |
2705 | if (output_bfd != NULL) | |
cedb70c5 | 2706 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2707 | input_section, output_bfd, error_message); |
2708 | ||
2709 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2710 | if (TOCstart == 0) | |
1c865ab2 | 2711 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2712 | |
2713 | /* Subtract the TOC base address. */ | |
2714 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2715 | return bfd_reloc_continue; | |
2716 | } | |
2717 | ||
2718 | static bfd_reloc_status_type | |
4ce794b7 AM |
2719 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2720 | void *data, asection *input_section, | |
2721 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2722 | { |
2723 | bfd_vma TOCstart; | |
2724 | ||
2725 | /* If this is a relocatable link (output_bfd test tells us), just | |
2726 | call the generic function. Any adjustment will be done at final | |
2727 | link time. */ | |
2728 | if (output_bfd != NULL) | |
cedb70c5 | 2729 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2730 | input_section, output_bfd, error_message); |
2731 | ||
2732 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2733 | if (TOCstart == 0) | |
1c865ab2 | 2734 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2735 | |
2736 | /* Subtract the TOC base address. */ | |
2737 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2738 | ||
2739 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2740 | reloc_entry->addend += 0x8000; | |
2741 | return bfd_reloc_continue; | |
2742 | } | |
2743 | ||
2744 | static bfd_reloc_status_type | |
4ce794b7 AM |
2745 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2746 | void *data, asection *input_section, | |
2747 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2748 | { |
2749 | bfd_vma TOCstart; | |
2750 | bfd_size_type octets; | |
2751 | ||
2752 | /* If this is a relocatable link (output_bfd test tells us), just | |
2753 | call the generic function. Any adjustment will be done at final | |
2754 | link time. */ | |
2755 | if (output_bfd != NULL) | |
cedb70c5 | 2756 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2757 | input_section, output_bfd, error_message); |
2758 | ||
2759 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2760 | if (TOCstart == 0) | |
1c865ab2 | 2761 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2762 | |
2763 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2764 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2765 | return bfd_reloc_ok; | |
2766 | } | |
2767 | ||
2768 | static bfd_reloc_status_type | |
4ce794b7 AM |
2769 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2770 | void *data, asection *input_section, | |
2771 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2772 | { |
2773 | /* If this is a relocatable link (output_bfd test tells us), just | |
2774 | call the generic function. Any adjustment will be done at final | |
2775 | link time. */ | |
2776 | if (output_bfd != NULL) | |
cedb70c5 | 2777 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2778 | input_section, output_bfd, error_message); |
2779 | ||
2780 | if (error_message != NULL) | |
2781 | { | |
2782 | static char buf[60]; | |
2783 | sprintf (buf, "generic linker can't handle %s", | |
2784 | reloc_entry->howto->name); | |
2785 | *error_message = buf; | |
2786 | } | |
2787 | return bfd_reloc_dangerous; | |
2788 | } | |
2789 | ||
927be08e AM |
2790 | /* Track GOT entries needed for a given symbol. We might need more |
2791 | than one got entry per symbol. */ | |
2792 | struct got_entry | |
2793 | { | |
2794 | struct got_entry *next; | |
2795 | ||
2796 | /* The symbol addend that we'll be placing in the GOT. */ | |
2797 | bfd_vma addend; | |
2798 | ||
2799 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2800 | symbol referenced from different input files. This is to support | |
2801 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2802 | from one input file to another. After partitioning into TOC groups | |
2803 | we merge entries within the group. | |
2804 | ||
2805 | Point to the BFD owning this GOT entry. */ | |
2806 | bfd *owner; | |
2807 | ||
2808 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2809 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2810 | unsigned char tls_type; |
927be08e AM |
2811 | |
2812 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2813 | unsigned char is_indirect; |
927be08e AM |
2814 | |
2815 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2816 | union | |
2817 | { | |
2818 | bfd_signed_vma refcount; | |
2819 | bfd_vma offset; | |
2820 | struct got_entry *ent; | |
2821 | } got; | |
2822 | }; | |
2823 | ||
2824 | /* The same for PLT. */ | |
2825 | struct plt_entry | |
2826 | { | |
2827 | struct plt_entry *next; | |
2828 | ||
2829 | bfd_vma addend; | |
2830 | ||
2831 | union | |
2832 | { | |
2833 | bfd_signed_vma refcount; | |
2834 | bfd_vma offset; | |
2835 | } plt; | |
2836 | }; | |
2837 | ||
e717da7e AM |
2838 | struct ppc64_elf_obj_tdata |
2839 | { | |
2840 | struct elf_obj_tdata elf; | |
2841 | ||
2842 | /* Shortcuts to dynamic linker sections. */ | |
2843 | asection *got; | |
2844 | asection *relgot; | |
2845 | ||
b3fac117 AM |
2846 | /* Used during garbage collection. We attach global symbols defined |
2847 | on removed .opd entries to this section so that the sym is removed. */ | |
2848 | asection *deleted_section; | |
81688140 | 2849 | |
927be08e | 2850 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2851 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2852 | struct got_entry tlsld_got; |
8860955f | 2853 | |
729eabd5 AM |
2854 | union { |
2855 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2856 | Elf_Internal_Rela *relocs; | |
2857 | ||
2858 | /* Section contents. */ | |
2859 | bfd_byte *contents; | |
2860 | } opd; | |
d77c8a4b AM |
2861 | |
2862 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2863 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2864 | unsigned int has_small_toc_reloc : 1; |
2865 | ||
560c8763 AM |
2866 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2867 | instruction not one we handle. */ | |
2868 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2869 | }; |
2870 | ||
2871 | #define ppc64_elf_tdata(bfd) \ | |
2872 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2873 | ||
2874 | #define ppc64_tlsld_got(bfd) \ | |
2875 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2876 | ||
0c8d6e5c AM |
2877 | #define is_ppc64_elf(bfd) \ |
2878 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2879 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2880 | |
e717da7e AM |
2881 | /* Override the generic function because we store some extras. */ |
2882 | ||
2883 | static bfd_boolean | |
2884 | ppc64_elf_mkobject (bfd *abfd) | |
2885 | { | |
0ffa91dd | 2886 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2887 | PPC64_ELF_DATA); |
e717da7e AM |
2888 | } |
2889 | ||
feee612b | 2890 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2891 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2892 | |
b34976b6 | 2893 | static bfd_boolean |
4ce794b7 | 2894 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2895 | { |
14b57c7c AM |
2896 | if (!abfd->arch_info->the_default) |
2897 | return TRUE; | |
2898 | ||
2899 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2900 | { |
2901 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2902 | ||
2903 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2904 | { | |
2905 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2906 | abfd->arch_info = abfd->arch_info->next; | |
2907 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2908 | } | |
2909 | } | |
14b57c7c | 2910 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2911 | } |
2912 | ||
d37c89e5 AM |
2913 | /* Support for core dump NOTE sections. */ |
2914 | ||
2915 | static bfd_boolean | |
2916 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2917 | { | |
eea6121a | 2918 | size_t offset, size; |
d37c89e5 AM |
2919 | |
2920 | if (note->descsz != 504) | |
2921 | return FALSE; | |
2922 | ||
2923 | /* pr_cursig */ | |
228e534f | 2924 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2925 | |
2926 | /* pr_pid */ | |
228e534f | 2927 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2928 | |
2929 | /* pr_reg */ | |
2930 | offset = 112; | |
eea6121a | 2931 | size = 384; |
d37c89e5 AM |
2932 | |
2933 | /* Make a ".reg/999" section. */ | |
2934 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2935 | size, note->descpos + offset); |
d37c89e5 AM |
2936 | } |
2937 | ||
2938 | static bfd_boolean | |
2939 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2940 | { | |
2941 | if (note->descsz != 136) | |
2942 | return FALSE; | |
2943 | ||
228e534f | 2944 | elf_tdata (abfd)->core->pid |
bc989cdc | 2945 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2946 | elf_tdata (abfd)->core->program |
d37c89e5 | 2947 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2948 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2949 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2950 | ||
2951 | return TRUE; | |
2952 | } | |
2953 | ||
183e98be AM |
2954 | static char * |
2955 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2956 | ...) | |
2957 | { | |
2958 | switch (note_type) | |
2959 | { | |
2960 | default: | |
2961 | return NULL; | |
2962 | ||
2963 | case NT_PRPSINFO: | |
2964 | { | |
2965 | char data[136]; | |
2966 | va_list ap; | |
2967 | ||
2968 | va_start (ap, note_type); | |
75cd47ed | 2969 | memset (data, 0, sizeof (data)); |
183e98be AM |
2970 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2971 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2972 | va_end (ap); | |
2973 | return elfcore_write_note (abfd, buf, bufsiz, | |
2974 | "CORE", note_type, data, sizeof (data)); | |
2975 | } | |
2976 | ||
2977 | case NT_PRSTATUS: | |
2978 | { | |
2979 | char data[504]; | |
2980 | va_list ap; | |
2981 | long pid; | |
2982 | int cursig; | |
2983 | const void *greg; | |
2984 | ||
2985 | va_start (ap, note_type); | |
2986 | memset (data, 0, 112); | |
2987 | pid = va_arg (ap, long); | |
2988 | bfd_put_32 (abfd, pid, data + 32); | |
2989 | cursig = va_arg (ap, int); | |
2990 | bfd_put_16 (abfd, cursig, data + 12); | |
2991 | greg = va_arg (ap, const void *); | |
2992 | memcpy (data + 112, greg, 384); | |
2993 | memset (data + 496, 0, 8); | |
2994 | va_end (ap); | |
2995 | return elfcore_write_note (abfd, buf, bufsiz, | |
2996 | "CORE", note_type, data, sizeof (data)); | |
2997 | } | |
2998 | } | |
2999 | } | |
3000 | ||
5d35169e AM |
3001 | /* Add extra PPC sections. */ |
3002 | ||
b35d266b | 3003 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3004 | { |
0112cd26 NC |
3005 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3006 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
3007 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3008 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3009 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3010 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
3011 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
3012 | }; |
3013 | ||
7c8fe5c4 AM |
3014 | enum _ppc64_sec_type { |
3015 | sec_normal = 0, | |
3016 | sec_opd = 1, | |
3017 | sec_toc = 2 | |
3018 | }; | |
3019 | ||
f0abc2a1 AM |
3020 | struct _ppc64_elf_section_data |
3021 | { | |
3022 | struct bfd_elf_section_data elf; | |
411e1bfb | 3023 | |
f0abc2a1 AM |
3024 | union |
3025 | { | |
51aecdc5 AM |
3026 | /* An array with one entry for each opd function descriptor, |
3027 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3028 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3029 | struct _opd_sec_data |
3030 | { | |
3031 | /* Points to the function code section for local opd entries. */ | |
3032 | asection **func_sec; | |
3033 | ||
3034 | /* After editing .opd, adjust references to opd local syms. */ | |
3035 | long *adjust; | |
3036 | } opd; | |
7c8fe5c4 | 3037 | |
3a71aa26 AM |
3038 | /* An array for toc sections, indexed by offset/8. */ |
3039 | struct _toc_sec_data | |
3040 | { | |
3041 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3042 | unsigned *symndx; | |
3043 | ||
3044 | /* And the relocation addend. */ | |
3045 | bfd_vma *add; | |
3046 | } toc; | |
7c8fe5c4 AM |
3047 | } u; |
3048 | ||
3049 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3050 | |
7c8fe5c4 AM |
3051 | /* Flag set when small branches are detected. Used to |
3052 | select suitable defaults for the stub group size. */ | |
3053 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
3054 | }; |
3055 | ||
3056 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3057 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3058 | |
3059 | static bfd_boolean | |
4ce794b7 | 3060 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3061 | { |
f592407e AM |
3062 | if (!sec->used_by_bfd) |
3063 | { | |
3064 | struct _ppc64_elf_section_data *sdata; | |
3065 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3066 | |
f592407e AM |
3067 | sdata = bfd_zalloc (abfd, amt); |
3068 | if (sdata == NULL) | |
3069 | return FALSE; | |
3070 | sec->used_by_bfd = sdata; | |
3071 | } | |
f0abc2a1 AM |
3072 | |
3073 | return _bfd_elf_new_section_hook (abfd, sec); | |
3074 | } | |
4025353c | 3075 | |
74f0fb50 | 3076 | static struct _opd_sec_data * |
4025353c AM |
3077 | get_opd_info (asection * sec) |
3078 | { | |
3079 | if (sec != NULL | |
3080 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3081 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3082 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3083 | return NULL; |
3084 | } | |
90e3cdf2 JJ |
3085 | \f |
3086 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
3087 | static bfd_boolean synthetic_relocatable; |
3088 | ||
699733f6 | 3089 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3090 | |
3091 | static int | |
3092 | compare_symbols (const void *ap, const void *bp) | |
3093 | { | |
3094 | const asymbol *a = * (const asymbol **) ap; | |
3095 | const asymbol *b = * (const asymbol **) bp; | |
3096 | ||
699733f6 AM |
3097 | /* Section symbols first. */ |
3098 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3099 | return -1; |
699733f6 | 3100 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3101 | return 1; |
3102 | ||
699733f6 | 3103 | /* then .opd symbols. */ |
ffcfec52 AM |
3104 | if (strcmp (a->section->name, ".opd") == 0 |
3105 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 3106 | return -1; |
ffcfec52 AM |
3107 | if (strcmp (a->section->name, ".opd") != 0 |
3108 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3109 | return 1; |
3110 | ||
699733f6 | 3111 | /* then other code symbols. */ |
90e3cdf2 JJ |
3112 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3113 | == (SEC_CODE | SEC_ALLOC) | |
3114 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3115 | != (SEC_CODE | SEC_ALLOC)) | |
3116 | return -1; | |
3117 | ||
3118 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3119 | != (SEC_CODE | SEC_ALLOC) | |
3120 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3121 | == (SEC_CODE | SEC_ALLOC)) | |
3122 | return 1; | |
3123 | ||
3124 | if (synthetic_relocatable) | |
3125 | { | |
3126 | if (a->section->id < b->section->id) | |
3127 | return -1; | |
3128 | ||
3129 | if (a->section->id > b->section->id) | |
3130 | return 1; | |
3131 | } | |
3132 | ||
3133 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3134 | return -1; | |
3135 | ||
3136 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3137 | return 1; | |
3138 | ||
4d35a0aa AM |
3139 | /* For syms with the same value, prefer strong dynamic global function |
3140 | syms over other syms. */ | |
3141 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3142 | return -1; | |
3143 | ||
3144 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3145 | return 1; | |
3146 | ||
3147 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3148 | return -1; | |
3149 | ||
3150 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3151 | return 1; | |
3152 | ||
3153 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3154 | return -1; | |
3155 | ||
3156 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3157 | return 1; | |
3158 | ||
3159 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3160 | return -1; | |
3161 | ||
3162 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3163 | return 1; | |
3164 | ||
90e3cdf2 JJ |
3165 | return 0; |
3166 | } | |
3167 | ||
699733f6 | 3168 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3169 | |
699733f6 | 3170 | static asymbol * |
7292b3ac | 3171 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3172 | { |
699733f6 | 3173 | long mid; |
90e3cdf2 | 3174 | |
7292b3ac | 3175 | if (id == (unsigned) -1) |
699733f6 AM |
3176 | { |
3177 | while (lo < hi) | |
3178 | { | |
3179 | mid = (lo + hi) >> 1; | |
3180 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3181 | lo = mid + 1; | |
3182 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3183 | hi = mid; | |
3184 | else | |
3185 | return syms[mid]; | |
3186 | } | |
3187 | } | |
3188 | else | |
3189 | { | |
3190 | while (lo < hi) | |
3191 | { | |
3192 | mid = (lo + hi) >> 1; | |
3193 | if (syms[mid]->section->id < id) | |
3194 | lo = mid + 1; | |
3195 | else if (syms[mid]->section->id > id) | |
3196 | hi = mid; | |
3197 | else if (syms[mid]->value < value) | |
3198 | lo = mid + 1; | |
3199 | else if (syms[mid]->value > value) | |
3200 | hi = mid; | |
3201 | else | |
3202 | return syms[mid]; | |
3203 | } | |
3204 | } | |
3205 | return NULL; | |
90e3cdf2 JJ |
3206 | } |
3207 | ||
468392fb AM |
3208 | static bfd_boolean |
3209 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3210 | { | |
3211 | bfd_vma vma = *(bfd_vma *) ptr; | |
3212 | return ((section->flags & SEC_ALLOC) != 0 | |
3213 | && section->vma <= vma | |
3214 | && vma < section->vma + section->size); | |
3215 | } | |
3216 | ||
699733f6 | 3217 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3218 | entry syms. Also generate @plt symbols for the glink branch table. |
3219 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3220 | |
3221 | static long | |
a7535cf3 AM |
3222 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3223 | long static_count, asymbol **static_syms, | |
3224 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3225 | asymbol **ret) |
90e3cdf2 JJ |
3226 | { |
3227 | asymbol *s; | |
699733f6 AM |
3228 | long i; |
3229 | long count; | |
90e3cdf2 | 3230 | char *names; |
a7535cf3 | 3231 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3232 | asection *opd = NULL; |
90e3cdf2 | 3233 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3234 | asymbol **syms; |
ee67d69a | 3235 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3236 | |
3237 | *ret = NULL; | |
3238 | ||
ee67d69a AM |
3239 | if (abi < 2) |
3240 | { | |
3241 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3242 | if (opd == NULL && abi == 1) | |
3243 | return 0; | |
3244 | } | |
90e3cdf2 | 3245 | |
a7535cf3 | 3246 | symcount = static_count; |
c9727e01 | 3247 | if (!relocatable) |
a7535cf3 | 3248 | symcount += dyn_count; |
90e3cdf2 | 3249 | if (symcount == 0) |
c9727e01 | 3250 | return 0; |
90e3cdf2 | 3251 | |
a7535cf3 AM |
3252 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3253 | if (syms == NULL) | |
7356fed5 | 3254 | return -1; |
a7535cf3 AM |
3255 | |
3256 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3257 | { | |
3258 | /* Use both symbol tables. */ | |
3259 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3260 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3261 | } | |
3262 | else if (!relocatable && static_count == 0) | |
3263 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3264 | else | |
3265 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3266 | ||
90e3cdf2 | 3267 | synthetic_relocatable = relocatable; |
595da8c5 | 3268 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3269 | |
c9727e01 AM |
3270 | if (!relocatable && symcount > 1) |
3271 | { | |
3272 | long j; | |
3273 | /* Trim duplicate syms, since we may have merged the normal and | |
3274 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3275 | different values, so trim any with the same value. */ |
c9727e01 AM |
3276 | for (i = 1, j = 1; i < symcount; ++i) |
3277 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3278 | != syms[i]->value + syms[i]->section->vma) | |
3279 | syms[j++] = syms[i]; | |
3280 | symcount = j; | |
3281 | } | |
3282 | ||
699733f6 | 3283 | i = 0; |
ffcfec52 | 3284 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3285 | ++i; |
3286 | codesecsym = i; | |
90e3cdf2 | 3287 | |
699733f6 AM |
3288 | for (; i < symcount; ++i) |
3289 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3290 | != (SEC_CODE | SEC_ALLOC)) | |
3291 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3292 | break; | |
3293 | codesecsymend = i; | |
90e3cdf2 | 3294 | |
699733f6 AM |
3295 | for (; i < symcount; ++i) |
3296 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3297 | break; | |
3298 | secsymend = i; | |
90e3cdf2 | 3299 | |
699733f6 | 3300 | for (; i < symcount; ++i) |
ffcfec52 | 3301 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3302 | break; |
3303 | opdsymend = i; | |
90e3cdf2 | 3304 | |
699733f6 AM |
3305 | for (; i < symcount; ++i) |
3306 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3307 | != (SEC_CODE | SEC_ALLOC)) | |
3308 | break; | |
3309 | symcount = i; | |
3310 | ||
c9727e01 | 3311 | count = 0; |
90e3cdf2 | 3312 | |
699733f6 | 3313 | if (relocatable) |
90e3cdf2 | 3314 | { |
699733f6 AM |
3315 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3316 | arelent *r; | |
3317 | size_t size; | |
3318 | long relcount; | |
90e3cdf2 | 3319 | |
468392fb AM |
3320 | if (opdsymend == secsymend) |
3321 | goto done; | |
3322 | ||
699733f6 | 3323 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3324 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3325 | if (relcount == 0) |
c9727e01 | 3326 | goto done; |
90e3cdf2 | 3327 | |
7356fed5 AM |
3328 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3329 | { | |
3330 | count = -1; | |
3331 | goto done; | |
3332 | } | |
3333 | ||
699733f6 | 3334 | size = 0; |
595da8c5 | 3335 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3336 | { |
3337 | asymbol *sym; | |
90e3cdf2 | 3338 | |
595da8c5 | 3339 | while (r < opd->relocation + relcount |
699733f6 AM |
3340 | && r->address < syms[i]->value + opd->vma) |
3341 | ++r; | |
90e3cdf2 | 3342 | |
595da8c5 | 3343 | if (r == opd->relocation + relcount) |
699733f6 | 3344 | break; |
90e3cdf2 | 3345 | |
699733f6 AM |
3346 | if (r->address != syms[i]->value + opd->vma) |
3347 | continue; | |
90e3cdf2 | 3348 | |
699733f6 AM |
3349 | if (r->howto->type != R_PPC64_ADDR64) |
3350 | continue; | |
90e3cdf2 | 3351 | |
699733f6 AM |
3352 | sym = *r->sym_ptr_ptr; |
3353 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3354 | sym->section->id, sym->value + r->addend)) | |
3355 | { | |
3356 | ++count; | |
3357 | size += sizeof (asymbol); | |
3358 | size += strlen (syms[i]->name) + 2; | |
3359 | } | |
3360 | } | |
90e3cdf2 | 3361 | |
c4b0b099 AM |
3362 | if (size == 0) |
3363 | goto done; | |
699733f6 AM |
3364 | s = *ret = bfd_malloc (size); |
3365 | if (s == NULL) | |
3366 | { | |
7356fed5 | 3367 | count = -1; |
c9727e01 | 3368 | goto done; |
699733f6 | 3369 | } |
90e3cdf2 | 3370 | |
699733f6 | 3371 | names = (char *) (s + count); |
90e3cdf2 | 3372 | |
595da8c5 | 3373 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3374 | { |
699733f6 | 3375 | asymbol *sym; |
90e3cdf2 | 3376 | |
595da8c5 | 3377 | while (r < opd->relocation + relcount |
699733f6 AM |
3378 | && r->address < syms[i]->value + opd->vma) |
3379 | ++r; | |
90e3cdf2 | 3380 | |
595da8c5 | 3381 | if (r == opd->relocation + relcount) |
699733f6 AM |
3382 | break; |
3383 | ||
3384 | if (r->address != syms[i]->value + opd->vma) | |
3385 | continue; | |
3386 | ||
3387 | if (r->howto->type != R_PPC64_ADDR64) | |
3388 | continue; | |
90e3cdf2 | 3389 | |
699733f6 AM |
3390 | sym = *r->sym_ptr_ptr; |
3391 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3392 | sym->section->id, sym->value + r->addend)) | |
3393 | { | |
3394 | size_t len; | |
3395 | ||
3396 | *s = *syms[i]; | |
6ba2a415 | 3397 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3398 | s->section = sym->section; |
3399 | s->value = sym->value + r->addend; | |
3400 | s->name = names; | |
3401 | *names++ = '.'; | |
3402 | len = strlen (syms[i]->name); | |
3403 | memcpy (names, syms[i]->name, len + 1); | |
3404 | names += len + 1; | |
6f610d07 UW |
3405 | /* Have udata.p point back to the original symbol this |
3406 | synthetic symbol was derived from. */ | |
3407 | s->udata.p = syms[i]; | |
699733f6 AM |
3408 | s++; |
3409 | } | |
3410 | } | |
3411 | } | |
3412 | else | |
90e3cdf2 | 3413 | { |
468392fb | 3414 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3415 | bfd_byte *contents = NULL; |
699733f6 | 3416 | size_t size; |
468392fb AM |
3417 | long plt_count = 0; |
3418 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3419 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3420 | arelent *p; | |
90e3cdf2 | 3421 | |
ee67d69a | 3422 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3423 | { |
c4b0b099 AM |
3424 | free_contents_and_exit_err: |
3425 | count = -1; | |
ee67d69a | 3426 | free_contents_and_exit: |
699733f6 | 3427 | if (contents) |
ee67d69a | 3428 | free (contents); |
c9727e01 | 3429 | goto done; |
699733f6 | 3430 | } |
90e3cdf2 | 3431 | |
699733f6 AM |
3432 | size = 0; |
3433 | for (i = secsymend; i < opdsymend; ++i) | |
3434 | { | |
3435 | bfd_vma ent; | |
90e3cdf2 | 3436 | |
5ef11c02 AM |
3437 | /* Ignore bogus symbols. */ |
3438 | if (syms[i]->value > opd->size - 8) | |
3439 | continue; | |
3440 | ||
699733f6 AM |
3441 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3442 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3443 | { | |
3444 | ++count; | |
3445 | size += sizeof (asymbol); | |
3446 | size += strlen (syms[i]->name) + 2; | |
3447 | } | |
3448 | } | |
90e3cdf2 | 3449 | |
468392fb | 3450 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3451 | if (dyn_count != 0 |
3452 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3453 | { |
3454 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3455 | size_t extdynsize; | |
3456 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3457 | ||
3458 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3459 | goto free_contents_and_exit_err; |
468392fb AM |
3460 | |
3461 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3462 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3463 | ||
3464 | extdyn = dynbuf; | |
3465 | extdynend = extdyn + dynamic->size; | |
3466 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3467 | { | |
3468 | Elf_Internal_Dyn dyn; | |
3469 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3470 | ||
3471 | if (dyn.d_tag == DT_NULL) | |
3472 | break; | |
3473 | ||
3474 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3475 | { | |
b9e5796b AM |
3476 | /* The first glink stub starts at offset 32; see |
3477 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3478 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3479 | /* The .glink section usually does not survive the final |
3480 | link; search for the section (usually .text) where the | |
3481 | glink stubs now reside. */ | |
3482 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3483 | &glink_vma); | |
3484 | break; | |
3485 | } | |
3486 | } | |
3487 | ||
3488 | free (dynbuf); | |
3489 | } | |
3490 | ||
3491 | if (glink != NULL) | |
3492 | { | |
3493 | /* Determine __glink trampoline by reading the relative branch | |
3494 | from the first glink stub. */ | |
3495 | bfd_byte buf[4]; | |
b9e5796b AM |
3496 | unsigned int off = 0; |
3497 | ||
3498 | while (bfd_get_section_contents (abfd, glink, buf, | |
3499 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3500 | { |
3501 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3502 | insn ^= B_DOT; | |
3503 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3504 | { |
3505 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3506 | break; | |
3507 | } | |
3508 | off += 4; | |
3509 | if (off > 4) | |
3510 | break; | |
468392fb AM |
3511 | } |
3512 | ||
3513 | if (resolv_vma) | |
3514 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3515 | |
066ee829 AM |
3516 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3517 | if (relplt != NULL) | |
3518 | { | |
3519 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3520 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3521 | goto free_contents_and_exit_err; |
68ffbac6 | 3522 | |
066ee829 AM |
3523 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3524 | size += plt_count * sizeof (asymbol); | |
468392fb | 3525 | |
066ee829 AM |
3526 | p = relplt->relocation; |
3527 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3528 | { |
3529 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3530 | if (p->addend != 0) | |
3531 | size += sizeof ("+0x") - 1 + 16; | |
3532 | } | |
066ee829 | 3533 | } |
468392fb AM |
3534 | } |
3535 | ||
c4b0b099 AM |
3536 | if (size == 0) |
3537 | goto free_contents_and_exit; | |
699733f6 AM |
3538 | s = *ret = bfd_malloc (size); |
3539 | if (s == NULL) | |
c4b0b099 | 3540 | goto free_contents_and_exit_err; |
90e3cdf2 | 3541 | |
468392fb | 3542 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3543 | |
699733f6 | 3544 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3545 | { |
699733f6 | 3546 | bfd_vma ent; |
90e3cdf2 | 3547 | |
5ef11c02 AM |
3548 | if (syms[i]->value > opd->size - 8) |
3549 | continue; | |
3550 | ||
699733f6 AM |
3551 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3552 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3553 | { |
c9727e01 | 3554 | long lo, hi; |
699733f6 | 3555 | size_t len; |
c9727e01 | 3556 | asection *sec = abfd->sections; |
90e3cdf2 | 3557 | |
699733f6 AM |
3558 | *s = *syms[i]; |
3559 | lo = codesecsym; | |
3560 | hi = codesecsymend; | |
3561 | while (lo < hi) | |
3562 | { | |
c9727e01 | 3563 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3564 | if (syms[mid]->section->vma < ent) |
3565 | lo = mid + 1; | |
3566 | else if (syms[mid]->section->vma > ent) | |
3567 | hi = mid; | |
3568 | else | |
c9727e01 AM |
3569 | { |
3570 | sec = syms[mid]->section; | |
3571 | break; | |
3572 | } | |
699733f6 AM |
3573 | } |
3574 | ||
c9727e01 | 3575 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3576 | sec = syms[lo - 1]->section; |
699733f6 AM |
3577 | |
3578 | for (; sec != NULL; sec = sec->next) | |
3579 | { | |
3580 | if (sec->vma > ent) | |
3581 | break; | |
63524580 JK |
3582 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3583 | info file. */ | |
3584 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3585 | break; |
3586 | if ((sec->flags & SEC_CODE) != 0) | |
3587 | s->section = sec; | |
3588 | } | |
6ba2a415 | 3589 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3590 | s->value = ent - s->section->vma; |
3591 | s->name = names; | |
3592 | *names++ = '.'; | |
3593 | len = strlen (syms[i]->name); | |
3594 | memcpy (names, syms[i]->name, len + 1); | |
3595 | names += len + 1; | |
6f610d07 UW |
3596 | /* Have udata.p point back to the original symbol this |
3597 | synthetic symbol was derived from. */ | |
3598 | s->udata.p = syms[i]; | |
699733f6 | 3599 | s++; |
90e3cdf2 | 3600 | } |
90e3cdf2 | 3601 | } |
699733f6 | 3602 | free (contents); |
468392fb AM |
3603 | |
3604 | if (glink != NULL && relplt != NULL) | |
3605 | { | |
3606 | if (resolv_vma) | |
3607 | { | |
3608 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3609 | memset (s, 0, sizeof *s); |
468392fb | 3610 | s->the_bfd = abfd; |
6ba2a415 | 3611 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3612 | s->section = glink; |
3613 | s->value = resolv_vma - glink->vma; | |
3614 | s->name = names; | |
3615 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3616 | names += sizeof ("__glink_PLTresolve"); | |
3617 | s++; | |
3618 | count++; | |
3619 | } | |
3620 | ||
3621 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3622 | stub rather than on the glink branch table entry. The | |
3623 | objdump disassembler would then use a sensible symbol | |
3624 | name on plt calls. The difficulty in doing so is | |
3625 | a) finding the stubs, and, | |
3626 | b) matching stubs against plt entries, and, | |
3627 | c) there can be multiple stubs for a given plt entry. | |
3628 | ||
3629 | Solving (a) could be done by code scanning, but older | |
3630 | ppc64 binaries used different stubs to current code. | |
3631 | (b) is the tricky one since you need to known the toc | |
3632 | pointer for at least one function that uses a pic stub to | |
3633 | be able to calculate the plt address referenced. | |
3634 | (c) means gdb would need to set multiple breakpoints (or | |
3635 | find the glink branch itself) when setting breakpoints | |
3636 | for pending shared library loads. */ | |
3637 | p = relplt->relocation; | |
3638 | for (i = 0; i < plt_count; i++, p++) | |
3639 | { | |
3640 | size_t len; | |
3641 | ||
3642 | *s = **p->sym_ptr_ptr; | |
3643 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3644 | we are defining a symbol, ensure one of them is set. */ | |
3645 | if ((s->flags & BSF_LOCAL) == 0) | |
3646 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3647 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3648 | s->section = glink; |
3649 | s->value = glink_vma - glink->vma; | |
3650 | s->name = names; | |
3651 | s->udata.p = NULL; | |
3652 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3653 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3654 | names += len; | |
e054468f AM |
3655 | if (p->addend != 0) |
3656 | { | |
3657 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3658 | names += sizeof ("+0x") - 1; | |
3659 | bfd_sprintf_vma (abfd, names, p->addend); | |
3660 | names += strlen (names); | |
3661 | } | |
468392fb AM |
3662 | memcpy (names, "@plt", sizeof ("@plt")); |
3663 | names += sizeof ("@plt"); | |
3664 | s++; | |
b9e5796b AM |
3665 | if (abi < 2) |
3666 | { | |
3667 | glink_vma += 8; | |
3668 | if (i >= 0x8000) | |
3669 | glink_vma += 4; | |
3670 | } | |
3671 | else | |
468392fb AM |
3672 | glink_vma += 4; |
3673 | } | |
3674 | count += plt_count; | |
3675 | } | |
90e3cdf2 JJ |
3676 | } |
3677 | ||
c9727e01 | 3678 | done: |
a7535cf3 | 3679 | free (syms); |
90e3cdf2 JJ |
3680 | return count; |
3681 | } | |
5bd4f169 | 3682 | \f |
65f38f15 AM |
3683 | /* The following functions are specific to the ELF linker, while |
3684 | functions above are used generally. Those named ppc64_elf_* are | |
3685 | called by the main ELF linker code. They appear in this file more | |
3686 | or less in the order in which they are called. eg. | |
3687 | ppc64_elf_check_relocs is called early in the link process, | |
3688 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3689 | called. |
3690 | ||
3691 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3692 | functions have both a function code symbol and a function descriptor | |
3693 | symbol. A call to foo in a relocatable object file looks like: | |
3694 | ||
3695 | . .text | |
3696 | . x: | |
3697 | . bl .foo | |
3698 | . nop | |
3699 | ||
3700 | The function definition in another object file might be: | |
3701 | ||
3702 | . .section .opd | |
3703 | . foo: .quad .foo | |
3704 | . .quad .TOC.@tocbase | |
3705 | . .quad 0 | |
3706 | . | |
3707 | . .text | |
3708 | . .foo: blr | |
3709 | ||
3710 | When the linker resolves the call during a static link, the branch | |
3711 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3712 | If the function definition is in a shared library, things are a little | |
3713 | different: The call goes via a plt call stub, the opd information gets | |
3714 | copied to the plt, and the linker patches the nop. | |
3715 | ||
3716 | . x: | |
3717 | . bl .foo_stub | |
3718 | . ld 2,40(1) | |
3719 | . | |
3720 | . | |
3721 | . .foo_stub: | |
71a39c98 AM |
3722 | . std 2,40(1) # in practice, the call stub |
3723 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3724 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3725 | . ld 12,0(11) | |
3726 | . ld 2,8(11) | |
3727 | . mtctr 12 | |
3728 | . ld 11,16(11) | |
e86ce104 AM |
3729 | . bctr |
3730 | . | |
3731 | . .section .plt | |
3732 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3733 | ||
3734 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3735 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3736 | copying. | |
3737 | ||
3738 | What are the difficulties here? Well, firstly, the relocations | |
3739 | examined by the linker in check_relocs are against the function code | |
3740 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3741 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3742 | to carefully copy dynamic link information from one symbol to the other. | |
3743 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3744 | symbol as is normal for most other backends. We need foo dynamic | |
3745 | instead, at least for an application final link. However, when | |
3746 | creating a shared library containing foo, we need to have both symbols | |
3747 | dynamic so that references to .foo are satisfied during the early | |
3748 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3749 | definition from some other object, eg. a static library. |
3750 | ||
3751 | Update: As of August 2004, we support a new convention. Function | |
3752 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3753 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3754 | |
1d483afe | 3755 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3756 | selects those that must be copied when linking a shared library, |
3757 | even when the symbol is local. */ | |
65f38f15 | 3758 | |
1d483afe AM |
3759 | static int |
3760 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3761 | enum elf_ppc64_reloc_type r_type) | |
3762 | { | |
3763 | switch (r_type) | |
3764 | { | |
3765 | default: | |
3766 | return 1; | |
3767 | ||
3768 | case R_PPC64_REL32: | |
3769 | case R_PPC64_REL64: | |
3770 | case R_PPC64_REL30: | |
3771 | return 0; | |
3772 | ||
3773 | case R_PPC64_TPREL16: | |
3774 | case R_PPC64_TPREL16_LO: | |
3775 | case R_PPC64_TPREL16_HI: | |
3776 | case R_PPC64_TPREL16_HA: | |
3777 | case R_PPC64_TPREL16_DS: | |
3778 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3779 | case R_PPC64_TPREL16_HIGH: |
3780 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3781 | case R_PPC64_TPREL16_HIGHER: |
3782 | case R_PPC64_TPREL16_HIGHERA: | |
3783 | case R_PPC64_TPREL16_HIGHEST: | |
3784 | case R_PPC64_TPREL16_HIGHESTA: | |
3785 | case R_PPC64_TPREL64: | |
0e1862bb | 3786 | return !bfd_link_executable (info); |
1d483afe AM |
3787 | } |
3788 | } | |
65f38f15 | 3789 | |
f4656909 AM |
3790 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3791 | copying dynamic variables from a shared lib into an app's dynbss | |
3792 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3793 | shared lib. With code that gcc generates, it's vital that this be |
3794 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3795 | the address of a function descriptor, which resides in the .opd | |
3796 | section. gcc uses the descriptor directly rather than going via the | |
3797 | GOT as some other ABI's do, which means that initialized function | |
3798 | pointers must reference the descriptor. Thus, a function pointer | |
3799 | initialized to the address of a function in a shared library will | |
3800 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3801 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3802 | presents a problem as a plt entry for that function is also |
3803 | initialized from the function descriptor symbol and the copy reloc | |
3804 | may not be initialized first. */ | |
a23b6845 | 3805 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3806 | |
721956f4 | 3807 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3808 | string. */ |
3809 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3810 | |
3811 | /* Linker stubs. | |
3812 | ppc_stub_long_branch: | |
3813 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3814 | destination, but a 24 bit branch in a stub section will reach. | |
3815 | . b dest | |
3816 | ||
3817 | ppc_stub_plt_branch: | |
3818 | Similar to the above, but a 24 bit branch in the stub section won't | |
3819 | reach its destination. | |
71a39c98 AM |
3820 | . addis %r11,%r2,xxx@toc@ha |
3821 | . ld %r12,xxx@toc@l(%r11) | |
3822 | . mtctr %r12 | |
721956f4 AM |
3823 | . bctr |
3824 | ||
3825 | ppc_stub_plt_call: | |
2c66dc6c AM |
3826 | Used to call a function in a shared library. If it so happens that |
3827 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3828 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3829 | . std %r2,40(%r1) |
71a39c98 AM |
3830 | . addis %r11,%r2,xxx@toc@ha |
3831 | . ld %r12,xxx+0@toc@l(%r11) | |
3832 | . mtctr %r12 | |
3833 | . ld %r2,xxx+8@toc@l(%r11) | |
3834 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3835 | . bctr |
ad8e1ba5 AM |
3836 | |
3837 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3838 | code to adjust the value and save r2 to support multiple toc sections. | |
3839 | A ppc_stub_long_branch with an r2 offset looks like: | |
3840 | . std %r2,40(%r1) | |
3841 | . addis %r2,%r2,off@ha | |
3842 | . addi %r2,%r2,off@l | |
3843 | . b dest | |
3844 | ||
3845 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3846 | . std %r2,40(%r1) | |
71a39c98 AM |
3847 | . addis %r11,%r2,xxx@toc@ha |
3848 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3849 | . addis %r2,%r2,off@ha |
3850 | . addi %r2,%r2,off@l | |
71a39c98 | 3851 | . mtctr %r12 |
ad8e1ba5 | 3852 | . bctr |
ac2df442 AM |
3853 | |
3854 | In cases where the "addis" instruction would add zero, the "addis" is | |
3855 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3856 | */ |
3857 | ||
3858 | enum ppc_stub_type { | |
3859 | ppc_stub_none, | |
3860 | ppc_stub_long_branch, | |
ad8e1ba5 | 3861 | ppc_stub_long_branch_r2off, |
721956f4 | 3862 | ppc_stub_plt_branch, |
ad8e1ba5 | 3863 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3864 | ppc_stub_plt_call, |
7341d5e2 | 3865 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3866 | ppc_stub_global_entry, |
3867 | ppc_stub_save_res | |
721956f4 AM |
3868 | }; |
3869 | ||
6f20ed8a AM |
3870 | /* Information on stub grouping. */ |
3871 | struct map_stub | |
3872 | { | |
3873 | /* The stub section. */ | |
3874 | asection *stub_sec; | |
3875 | /* This is the section to which stubs in the group will be attached. */ | |
3876 | asection *link_sec; | |
a4b6fadd AM |
3877 | /* Next group. */ |
3878 | struct map_stub *next; | |
3879 | /* Whether to emit a copy of register save/restore functions in this | |
3880 | group. */ | |
3881 | int needs_save_res; | |
6f20ed8a AM |
3882 | }; |
3883 | ||
721956f4 AM |
3884 | struct ppc_stub_hash_entry { |
3885 | ||
3886 | /* Base hash table entry structure. */ | |
3887 | struct bfd_hash_entry root; | |
3888 | ||
ad8e1ba5 AM |
3889 | enum ppc_stub_type stub_type; |
3890 | ||
6f20ed8a AM |
3891 | /* Group information. */ |
3892 | struct map_stub *group; | |
721956f4 AM |
3893 | |
3894 | /* Offset within stub_sec of the beginning of this stub. */ | |
3895 | bfd_vma stub_offset; | |
3896 | ||
3897 | /* Given the symbol's value and its section we can determine its final | |
3898 | value when building the stubs (so the stub knows where to jump. */ | |
3899 | bfd_vma target_value; | |
3900 | asection *target_section; | |
3901 | ||
721956f4 AM |
3902 | /* The symbol table entry, if any, that this was derived from. */ |
3903 | struct ppc_link_hash_entry *h; | |
e054468f | 3904 | struct plt_entry *plt_ent; |
721956f4 | 3905 | |
6911b7dc AM |
3906 | /* Symbol st_other. */ |
3907 | unsigned char other; | |
721956f4 AM |
3908 | }; |
3909 | ||
3910 | struct ppc_branch_hash_entry { | |
3911 | ||
3912 | /* Base hash table entry structure. */ | |
3913 | struct bfd_hash_entry root; | |
3914 | ||
c456f082 | 3915 | /* Offset within branch lookup table. */ |
721956f4 AM |
3916 | unsigned int offset; |
3917 | ||
3918 | /* Generation marker. */ | |
3919 | unsigned int iter; | |
3920 | }; | |
65f38f15 | 3921 | |
19e08130 AM |
3922 | /* Used to track dynamic relocations for local symbols. */ |
3923 | struct ppc_dyn_relocs | |
3924 | { | |
3925 | struct ppc_dyn_relocs *next; | |
3926 | ||
3927 | /* The input section of the reloc. */ | |
3928 | asection *sec; | |
3929 | ||
3930 | /* Total number of relocs copied for the input section. */ | |
3931 | unsigned int count : 31; | |
3932 | ||
3933 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3934 | unsigned int ifunc : 1; | |
3935 | }; | |
3936 | ||
65f38f15 AM |
3937 | struct ppc_link_hash_entry |
3938 | { | |
3939 | struct elf_link_hash_entry elf; | |
3940 | ||
b3fac117 AM |
3941 | union { |
3942 | /* A pointer to the most recently used stub hash entry against this | |
3943 | symbol. */ | |
3944 | struct ppc_stub_hash_entry *stub_cache; | |
3945 | ||
3946 | /* A pointer to the next symbol starting with a '.' */ | |
3947 | struct ppc_link_hash_entry *next_dot_sym; | |
3948 | } u; | |
721956f4 | 3949 | |
65f38f15 | 3950 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3951 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3952 | |
721956f4 | 3953 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3954 | struct ppc_link_hash_entry *oh; |
721956f4 | 3955 | |
e86ce104 AM |
3956 | /* Flag function code and descriptor symbols. */ |
3957 | unsigned int is_func:1; | |
3958 | unsigned int is_func_descriptor:1; | |
908b32fc | 3959 | unsigned int fake:1; |
411e1bfb | 3960 | |
c5614fa4 AM |
3961 | /* Whether global opd/toc sym has been adjusted or not. |
3962 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3963 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3964 | unsigned int adjust_done:1; |
3965 | ||
99877b66 AM |
3966 | /* Set if we twiddled this symbol to weak at some stage. */ |
3967 | unsigned int was_undefined:1; | |
3968 | ||
a4b6fadd AM |
3969 | /* Set if this is an out-of-line register save/restore function, |
3970 | with non-standard calling convention. */ | |
3971 | unsigned int save_res:1; | |
3972 | ||
411e1bfb | 3973 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3974 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3975 | corresponding relocs are encountered during check_relocs. | |
3976 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3977 | indicate the corresponding GOT entry type is not needed. | |
3978 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3979 | a TPREL one. We use a separate flag rather than setting TPREL | |
3980 | just for convenience in distinguishing the two cases. */ | |
3981 | #define TLS_GD 1 /* GD reloc. */ | |
3982 | #define TLS_LD 2 /* LD reloc. */ | |
3983 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3984 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3985 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3986 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3987 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3988 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3989 | unsigned char tls_mask; |
65f38f15 AM |
3990 | }; |
3991 | ||
3992 | /* ppc64 ELF linker hash table. */ | |
3993 | ||
3994 | struct ppc_link_hash_table | |
3995 | { | |
3996 | struct elf_link_hash_table elf; | |
3997 | ||
721956f4 AM |
3998 | /* The stub hash table. */ |
3999 | struct bfd_hash_table stub_hash_table; | |
4000 | ||
4001 | /* Another hash table for plt_branch stubs. */ | |
4002 | struct bfd_hash_table branch_hash_table; | |
4003 | ||
3b421ab3 AM |
4004 | /* Hash table for function prologue tocsave. */ |
4005 | htab_t tocsave_htab; | |
4006 | ||
e7d1c40c AM |
4007 | /* Various options and other info passed from the linker. */ |
4008 | struct ppc64_elf_params *params; | |
721956f4 | 4009 | |
6f20ed8a AM |
4010 | /* The size of sec_info below. */ |
4011 | unsigned int sec_info_arr_size; | |
4012 | ||
4013 | /* Per-section array of extra section info. Done this way rather | |
4014 | than as part of ppc64_elf_section_data so we have the info for | |
4015 | non-ppc64 sections. */ | |
4016 | struct | |
4017 | { | |
4018 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4019 | bfd_vma toc_off; |
6f20ed8a AM |
4020 | |
4021 | union | |
4022 | { | |
4023 | /* The section group that this section belongs to. */ | |
4024 | struct map_stub *group; | |
4025 | /* A temp section list pointer. */ | |
4026 | asection *list; | |
4027 | } u; | |
4028 | } *sec_info; | |
721956f4 | 4029 | |
a4b6fadd AM |
4030 | /* Linked list of groups. */ |
4031 | struct map_stub *group; | |
4032 | ||
ad8e1ba5 AM |
4033 | /* Temp used when calculating TOC pointers. */ |
4034 | bfd_vma toc_curr; | |
bf102f86 AM |
4035 | bfd *toc_bfd; |
4036 | asection *toc_first_sec; | |
ad8e1ba5 | 4037 | |
b3fac117 AM |
4038 | /* Used when adding symbols. */ |
4039 | struct ppc_link_hash_entry *dot_syms; | |
4040 | ||
33e44f2e | 4041 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
4042 | asection *dynbss; |
4043 | asection *relbss; | |
4044 | asection *glink; | |
82bd7b59 | 4045 | asection *sfpr; |
4ce794b7 AM |
4046 | asection *brlt; |
4047 | asection *relbrlt; | |
58d180e8 | 4048 | asection *glink_eh_frame; |
ec338859 | 4049 | |
8387904d AM |
4050 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4051 | struct ppc_link_hash_entry *tls_get_addr; | |
4052 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4053 | |
927be08e AM |
4054 | /* The size of reliplt used by got entry relocs. */ |
4055 | bfd_size_type got_reli_size; | |
4056 | ||
9b5ecbd0 | 4057 | /* Statistics. */ |
7341d5e2 | 4058 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4059 | |
ee75fd95 AM |
4060 | /* Number of stubs against global syms. */ |
4061 | unsigned long stub_globals; | |
4062 | ||
ee67d69a AM |
4063 | /* Set if we're linking code with function descriptors. */ |
4064 | unsigned int opd_abi:1; | |
4065 | ||
4c52953f | 4066 | /* Support for multiple toc sections. */ |
33c0ec9d | 4067 | unsigned int do_multi_toc:1; |
4c52953f | 4068 | unsigned int multi_toc_needed:1; |
927be08e | 4069 | unsigned int second_toc_pass:1; |
67f0cbdb | 4070 | unsigned int do_toc_opt:1; |
4c52953f | 4071 | |
5d1634d7 | 4072 | /* Set on error. */ |
99877b66 | 4073 | unsigned int stub_error:1; |
721956f4 | 4074 | |
f6c7c3e8 | 4075 | /* Temp used by ppc64_elf_before_check_relocs. */ |
99877b66 | 4076 | unsigned int twiddled_syms:1; |
721956f4 AM |
4077 | |
4078 | /* Incremented every time we size stubs. */ | |
4079 | unsigned int stub_iteration; | |
5d1634d7 | 4080 | |
87d72d41 AM |
4081 | /* Small local sym cache. */ |
4082 | struct sym_cache sym_cache; | |
65f38f15 AM |
4083 | }; |
4084 | ||
4c52953f AM |
4085 | /* Rename some of the generic section flags to better document how they |
4086 | are used here. */ | |
b0dddeec AM |
4087 | |
4088 | /* Nonzero if this section has TLS related relocations. */ | |
4089 | #define has_tls_reloc sec_flg0 | |
4090 | ||
4091 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
4092 | #define has_tls_get_addr_call sec_flg1 | |
4093 | ||
4094 | /* Nonzero if this section has any toc or got relocs. */ | |
4095 | #define has_toc_reloc sec_flg2 | |
4096 | ||
4097 | /* Nonzero if this section has a call to another section that uses | |
4098 | the toc or got. */ | |
d77c8a4b | 4099 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4100 | |
4101 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4102 | #define call_check_in_progress sec_flg4 |
70cc837d | 4103 | #define call_check_done sec_flg5 |
4c52953f | 4104 | |
65f38f15 AM |
4105 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4106 | ||
4107 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4108 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4109 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4110 | |
721956f4 AM |
4111 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4112 | ((struct ppc_stub_hash_entry *) \ | |
4113 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4114 | ||
4115 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4116 | ((struct ppc_branch_hash_entry *) \ | |
4117 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4118 | ||
4119 | /* Create an entry in the stub hash table. */ | |
4120 | ||
4121 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4122 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4123 | struct bfd_hash_table *table, | |
4124 | const char *string) | |
721956f4 AM |
4125 | { |
4126 | /* Allocate the structure if it has not already been allocated by a | |
4127 | subclass. */ | |
4128 | if (entry == NULL) | |
4129 | { | |
4130 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4131 | if (entry == NULL) | |
4132 | return entry; | |
4133 | } | |
4134 | ||
4135 | /* Call the allocation method of the superclass. */ | |
4136 | entry = bfd_hash_newfunc (entry, table, string); | |
4137 | if (entry != NULL) | |
4138 | { | |
4139 | struct ppc_stub_hash_entry *eh; | |
4140 | ||
4141 | /* Initialize the local fields. */ | |
4142 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4143 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4144 | eh->group = NULL; |
721956f4 AM |
4145 | eh->stub_offset = 0; |
4146 | eh->target_value = 0; | |
4147 | eh->target_section = NULL; | |
721956f4 | 4148 | eh->h = NULL; |
6911b7dc | 4149 | eh->plt_ent = NULL; |
6911b7dc | 4150 | eh->other = 0; |
721956f4 AM |
4151 | } |
4152 | ||
4153 | return entry; | |
4154 | } | |
4155 | ||
4156 | /* Create an entry in the branch hash table. */ | |
4157 | ||
4158 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4159 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4160 | struct bfd_hash_table *table, | |
4161 | const char *string) | |
721956f4 AM |
4162 | { |
4163 | /* Allocate the structure if it has not already been allocated by a | |
4164 | subclass. */ | |
4165 | if (entry == NULL) | |
4166 | { | |
4167 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4168 | if (entry == NULL) | |
4169 | return entry; | |
4170 | } | |
4171 | ||
4172 | /* Call the allocation method of the superclass. */ | |
4173 | entry = bfd_hash_newfunc (entry, table, string); | |
4174 | if (entry != NULL) | |
4175 | { | |
4176 | struct ppc_branch_hash_entry *eh; | |
4177 | ||
4178 | /* Initialize the local fields. */ | |
4179 | eh = (struct ppc_branch_hash_entry *) entry; | |
4180 | eh->offset = 0; | |
4181 | eh->iter = 0; | |
4182 | } | |
4183 | ||
4184 | return entry; | |
4185 | } | |
4186 | ||
65f38f15 AM |
4187 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4188 | ||
4189 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4190 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4191 | struct bfd_hash_table *table, | |
4192 | const char *string) | |
65f38f15 AM |
4193 | { |
4194 | /* Allocate the structure if it has not already been allocated by a | |
4195 | subclass. */ | |
4196 | if (entry == NULL) | |
4197 | { | |
4198 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4199 | if (entry == NULL) | |
4200 | return entry; | |
4201 | } | |
4202 | ||
4203 | /* Call the allocation method of the superclass. */ | |
4204 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4205 | if (entry != NULL) | |
4206 | { | |
4207 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4208 | ||
b3fac117 | 4209 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4210 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4211 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4212 | ||
4213 | /* When making function calls, old ABI code references function entry | |
4214 | points (dot symbols), while new ABI code references the function | |
4215 | descriptor symbol. We need to make any combination of reference and | |
4216 | definition work together, without breaking archive linking. | |
4217 | ||
4218 | For a defined function "foo" and an undefined call to "bar": | |
4219 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4220 | "bar" too). | |
4221 | A new object defines "foo" and references "bar". | |
4222 | ||
4223 | A new object thus has no problem with its undefined symbols being | |
4224 | satisfied by definitions in an old object. On the other hand, the | |
4225 | old object won't have ".bar" satisfied by a new object. | |
4226 | ||
4227 | Keep a list of newly added dot-symbols. */ | |
4228 | ||
4229 | if (string[0] == '.') | |
4230 | { | |
4231 | struct ppc_link_hash_table *htab; | |
4232 | ||
4233 | htab = (struct ppc_link_hash_table *) table; | |
4234 | eh->u.next_dot_sym = htab->dot_syms; | |
4235 | htab->dot_syms = eh; | |
4236 | } | |
65f38f15 AM |
4237 | } |
4238 | ||
4239 | return entry; | |
4240 | } | |
4241 | ||
3b421ab3 AM |
4242 | struct tocsave_entry { |
4243 | asection *sec; | |
4244 | bfd_vma offset; | |
4245 | }; | |
4246 | ||
4247 | static hashval_t | |
4248 | tocsave_htab_hash (const void *p) | |
4249 | { | |
4250 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4251 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4252 | } | |
4253 | ||
4254 | static int | |
4255 | tocsave_htab_eq (const void *p1, const void *p2) | |
4256 | { | |
4257 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4258 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4259 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4260 | } | |
4261 | ||
68faa637 AM |
4262 | /* Destroy a ppc64 ELF linker hash table. */ |
4263 | ||
4264 | static void | |
d495ab0d | 4265 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4266 | { |
d495ab0d | 4267 | struct ppc_link_hash_table *htab; |
68faa637 | 4268 | |
d495ab0d | 4269 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4270 | if (htab->tocsave_htab) |
4271 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4272 | bfd_hash_table_free (&htab->branch_hash_table); |
4273 | bfd_hash_table_free (&htab->stub_hash_table); | |
4274 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4275 | } |
4276 | ||
65f38f15 AM |
4277 | /* Create a ppc64 ELF linker hash table. */ |
4278 | ||
4279 | static struct bfd_link_hash_table * | |
4ce794b7 | 4280 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4281 | { |
4282 | struct ppc_link_hash_table *htab; | |
4283 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4284 | ||
4ce794b7 | 4285 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4286 | if (htab == NULL) |
4287 | return NULL; | |
4288 | ||
66eb6687 | 4289 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4290 | sizeof (struct ppc_link_hash_entry), |
4291 | PPC64_ELF_DATA)) | |
65f38f15 | 4292 | { |
e2d34d7d | 4293 | free (htab); |
65f38f15 AM |
4294 | return NULL; |
4295 | } | |
4296 | ||
721956f4 | 4297 | /* Init the stub hash table too. */ |
66eb6687 AM |
4298 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4299 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4300 | { |
d495ab0d | 4301 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4302 | return NULL; |
4303 | } | |
721956f4 AM |
4304 | |
4305 | /* And the branch hash table. */ | |
66eb6687 AM |
4306 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4307 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4308 | { |
4309 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4310 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4311 | return NULL; |
4312 | } | |
721956f4 | 4313 | |
3b421ab3 AM |
4314 | htab->tocsave_htab = htab_try_create (1024, |
4315 | tocsave_htab_hash, | |
4316 | tocsave_htab_eq, | |
4317 | NULL); | |
4318 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4319 | { |
d495ab0d | 4320 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4321 | return NULL; |
4322 | } | |
d495ab0d | 4323 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4324 | |
3254fd24 AM |
4325 | /* Initializing two fields of the union is just cosmetic. We really |
4326 | only care about glist, but when compiled on a 32-bit host the | |
4327 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4328 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4329 | htab->elf.init_got_refcount.refcount = 0; |
4330 | htab->elf.init_got_refcount.glist = NULL; | |
4331 | htab->elf.init_plt_refcount.refcount = 0; | |
4332 | htab->elf.init_plt_refcount.glist = NULL; | |
4333 | htab->elf.init_got_offset.offset = 0; | |
4334 | htab->elf.init_got_offset.glist = NULL; | |
4335 | htab->elf.init_plt_offset.offset = 0; | |
4336 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4337 | |
65f38f15 AM |
4338 | return &htab->elf.root; |
4339 | } | |
4340 | ||
bfeb4a28 AM |
4341 | /* Create sections for linker generated code. */ |
4342 | ||
4343 | static bfd_boolean | |
4344 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4345 | { | |
4346 | struct ppc_link_hash_table *htab; | |
4347 | flagword flags; | |
4348 | ||
4349 | htab = ppc_hash_table (info); | |
4350 | ||
bfeb4a28 AM |
4351 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4352 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4353 | if (htab->params->save_restore_funcs) |
4354 | { | |
4355 | /* Create .sfpr for code to save and restore fp regs. */ | |
4356 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4357 | flags); | |
4358 | if (htab->sfpr == NULL | |
4359 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4360 | return FALSE; | |
4361 | } | |
4362 | ||
4363 | if (bfd_link_relocatable (info)) | |
4364 | return TRUE; | |
bfeb4a28 AM |
4365 | |
4366 | /* Create .glink for lazy dynamic linking support. */ | |
4367 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4368 | flags); | |
4369 | if (htab->glink == NULL | |
4370 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4371 | return FALSE; | |
4372 | ||
4373 | if (!info->no_ld_generated_unwind_info) | |
4374 | { | |
4375 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4376 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4377 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4378 | ".eh_frame", | |
4379 | flags); | |
4380 | if (htab->glink_eh_frame == NULL | |
4381 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4382 | return FALSE; | |
4383 | } | |
4384 | ||
4385 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4386 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4387 | if (htab->elf.iplt == NULL | |
4388 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4389 | return FALSE; |
4390 | ||
4391 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4392 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4393 | htab->elf.irelplt |
4394 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4395 | if (htab->elf.irelplt == NULL | |
4396 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4397 | return FALSE; |
4398 | ||
4399 | /* Create branch lookup table for plt_branch stubs. */ | |
4400 | flags = (SEC_ALLOC | SEC_LOAD | |
4401 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4402 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4403 | flags); | |
4404 | if (htab->brlt == NULL | |
4405 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4406 | return FALSE; | |
4407 | ||
0e1862bb | 4408 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4409 | return TRUE; |
4410 | ||
4411 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4412 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4413 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4414 | ".rela.branch_lt", | |
4415 | flags); | |
4416 | if (htab->relbrlt == NULL | |
4417 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4418 | return FALSE; | |
4419 | ||
4420 | return TRUE; | |
4421 | } | |
4422 | ||
e717da7e AM |
4423 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4424 | ||
bfeb4a28 | 4425 | bfd_boolean |
e7d1c40c AM |
4426 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4427 | struct ppc64_elf_params *params) | |
e717da7e AM |
4428 | { |
4429 | struct ppc_link_hash_table *htab; | |
4430 | ||
e7d1c40c | 4431 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4432 | |
4433 | /* Always hook our dynamic sections into the first bfd, which is the | |
4434 | linker created stub bfd. This ensures that the GOT header is at | |
4435 | the start of the output TOC section. */ | |
4436 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4437 | htab->elf.dynobj = params->stub_bfd; |
4438 | htab->params = params; | |
bfeb4a28 | 4439 | |
bfeb4a28 | 4440 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4441 | } |
4442 | ||
721956f4 AM |
4443 | /* Build a name for an entry in the stub hash table. */ |
4444 | ||
4445 | static char * | |
4ce794b7 AM |
4446 | ppc_stub_name (const asection *input_section, |
4447 | const asection *sym_sec, | |
4448 | const struct ppc_link_hash_entry *h, | |
4449 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4450 | { |
4451 | char *stub_name; | |
bcaa2f82 | 4452 | ssize_t len; |
721956f4 AM |
4453 | |
4454 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4455 | offsets from a sym as a branch target? In fact, we could | |
4456 | probably assume the addend is always zero. */ | |
4457 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4458 | ||
4459 | if (h) | |
4460 | { | |
4461 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4462 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4463 | if (stub_name == NULL) |
4464 | return stub_name; | |
4465 | ||
bcaa2f82 AM |
4466 | len = sprintf (stub_name, "%08x.%s+%x", |
4467 | input_section->id & 0xffffffff, | |
4468 | h->elf.root.root.string, | |
4469 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4470 | } |
4471 | else | |
4472 | { | |
ad8e1ba5 | 4473 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4474 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4475 | if (stub_name == NULL) |
4476 | return stub_name; | |
4477 | ||
bcaa2f82 AM |
4478 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4479 | input_section->id & 0xffffffff, | |
4480 | sym_sec->id & 0xffffffff, | |
4481 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4482 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4483 | } |
bcaa2f82 | 4484 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4485 | stub_name[len - 2] = 0; |
721956f4 AM |
4486 | return stub_name; |
4487 | } | |
4488 | ||
4489 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4490 | creating the stub name takes a bit of time. */ | |
4491 | ||
4492 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4493 | ppc_get_stub_entry (const asection *input_section, |
4494 | const asection *sym_sec, | |
039b3fef | 4495 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4496 | const Elf_Internal_Rela *rel, |
4497 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4498 | { |
4499 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4500 | struct map_stub *group; |
721956f4 AM |
4501 | |
4502 | /* If this input section is part of a group of sections sharing one | |
4503 | stub section, then use the id of the first section in the group. | |
4504 | Stub names need to include a section id, as there may well be | |
4505 | more than one stub used to reach say, printf, and we need to | |
4506 | distinguish between them. */ | |
6f20ed8a | 4507 | group = htab->sec_info[input_section->id].u.group; |
721956f4 | 4508 | |
b3fac117 AM |
4509 | if (h != NULL && h->u.stub_cache != NULL |
4510 | && h->u.stub_cache->h == h | |
6f20ed8a | 4511 | && h->u.stub_cache->group == group) |
721956f4 | 4512 | { |
b3fac117 | 4513 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4514 | } |
4515 | else | |
4516 | { | |
4517 | char *stub_name; | |
4518 | ||
6f20ed8a | 4519 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4520 | if (stub_name == NULL) |
4521 | return NULL; | |
4522 | ||
4523 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4524 | stub_name, FALSE, FALSE); |
721956f4 | 4525 | if (h != NULL) |
b3fac117 | 4526 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4527 | |
4528 | free (stub_name); | |
4529 | } | |
4530 | ||
4531 | return stub_entry; | |
4532 | } | |
4533 | ||
4534 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4535 | stub entry are initialised. */ | |
4536 | ||
4537 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4538 | ppc_add_stub (const char *stub_name, |
4539 | asection *section, | |
25f53a85 | 4540 | struct bfd_link_info *info) |
721956f4 | 4541 | { |
25f53a85 | 4542 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4543 | struct map_stub *group; |
721956f4 AM |
4544 | asection *link_sec; |
4545 | asection *stub_sec; | |
4546 | struct ppc_stub_hash_entry *stub_entry; | |
4547 | ||
6f20ed8a AM |
4548 | group = htab->sec_info[section->id].u.group; |
4549 | link_sec = group->link_sec; | |
4550 | stub_sec = group->stub_sec; | |
721956f4 AM |
4551 | if (stub_sec == NULL) |
4552 | { | |
6f20ed8a AM |
4553 | size_t namelen; |
4554 | bfd_size_type len; | |
4555 | char *s_name; | |
721956f4 | 4556 | |
6f20ed8a AM |
4557 | namelen = strlen (link_sec->name); |
4558 | len = namelen + sizeof (STUB_SUFFIX); | |
4559 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4560 | if (s_name == NULL) | |
4561 | return NULL; | |
721956f4 | 4562 | |
6f20ed8a AM |
4563 | memcpy (s_name, link_sec->name, namelen); |
4564 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4565 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4566 | if (stub_sec == NULL) | |
4567 | return NULL; | |
4568 | group->stub_sec = stub_sec; | |
721956f4 AM |
4569 | } |
4570 | ||
4571 | /* Enter this entry into the linker stub hash table. */ | |
4572 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4573 | TRUE, FALSE); |
721956f4 AM |
4574 | if (stub_entry == NULL) |
4575 | { | |
8de848d8 | 4576 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4577 | section->owner, stub_name); |
721956f4 AM |
4578 | return NULL; |
4579 | } | |
4580 | ||
6f20ed8a | 4581 | stub_entry->group = group; |
721956f4 | 4582 | stub_entry->stub_offset = 0; |
721956f4 AM |
4583 | return stub_entry; |
4584 | } | |
4585 | ||
e717da7e AM |
4586 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4587 | not already done. */ | |
65f38f15 | 4588 | |
b34976b6 | 4589 | static bfd_boolean |
e717da7e | 4590 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4591 | { |
e717da7e AM |
4592 | asection *got, *relgot; |
4593 | flagword flags; | |
4594 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4595 | |
0c8d6e5c | 4596 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4597 | return FALSE; |
4dfe6ac6 NC |
4598 | if (htab == NULL) |
4599 | return FALSE; | |
0ffa91dd | 4600 | |
33e44f2e AM |
4601 | if (!htab->elf.sgot |
4602 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4603 | return FALSE; | |
e717da7e AM |
4604 | |
4605 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4606 | | SEC_LINKER_CREATED); | |
4607 | ||
c456f082 | 4608 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4609 | if (!got |
e717da7e AM |
4610 | || !bfd_set_section_alignment (abfd, got, 3)) |
4611 | return FALSE; | |
65f38f15 | 4612 | |
c456f082 AM |
4613 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4614 | flags | SEC_READONLY); | |
e717da7e | 4615 | if (!relgot |
e717da7e | 4616 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4617 | return FALSE; |
e717da7e AM |
4618 | |
4619 | ppc64_elf_tdata (abfd)->got = got; | |
4620 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4621 | return TRUE; |
65f38f15 | 4622 | } |
5bd4f169 | 4623 | |
82bd7b59 | 4624 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4625 | |
b34976b6 | 4626 | static bfd_boolean |
4ce794b7 | 4627 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4628 | { |
65f38f15 | 4629 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4630 | |
65f38f15 | 4631 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4632 | return FALSE; |
65f38f15 | 4633 | |
e717da7e | 4634 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4635 | if (htab == NULL) |
4636 | return FALSE; | |
4637 | ||
3d4d4302 | 4638 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 4639 | if (!bfd_link_pic (info)) |
3d4d4302 | 4640 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4641 | |
33e44f2e | 4642 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
0e1862bb | 4643 | || (!bfd_link_pic (info) && !htab->relbss)) |
65f38f15 AM |
4644 | abort (); |
4645 | ||
b34976b6 | 4646 | return TRUE; |
5bd4f169 AM |
4647 | } |
4648 | ||
b31867b6 AM |
4649 | /* Follow indirect and warning symbol links. */ |
4650 | ||
4651 | static inline struct bfd_link_hash_entry * | |
4652 | follow_link (struct bfd_link_hash_entry *h) | |
4653 | { | |
4654 | while (h->type == bfd_link_hash_indirect | |
4655 | || h->type == bfd_link_hash_warning) | |
4656 | h = h->u.i.link; | |
4657 | return h; | |
4658 | } | |
4659 | ||
4660 | static inline struct elf_link_hash_entry * | |
4661 | elf_follow_link (struct elf_link_hash_entry *h) | |
4662 | { | |
4663 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4664 | } | |
4665 | ||
4666 | static inline struct ppc_link_hash_entry * | |
4667 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4668 | { | |
4669 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4670 | } | |
4671 | ||
40d16e0b AM |
4672 | /* Merge PLT info on FROM with that on TO. */ |
4673 | ||
4674 | static void | |
4675 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4676 | struct ppc_link_hash_entry *to) | |
4677 | { | |
4678 | if (from->elf.plt.plist != NULL) | |
4679 | { | |
4680 | if (to->elf.plt.plist != NULL) | |
4681 | { | |
4682 | struct plt_entry **entp; | |
4683 | struct plt_entry *ent; | |
4684 | ||
4685 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4686 | { | |
4687 | struct plt_entry *dent; | |
4688 | ||
4689 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4690 | if (dent->addend == ent->addend) | |
4691 | { | |
4692 | dent->plt.refcount += ent->plt.refcount; | |
4693 | *entp = ent->next; | |
4694 | break; | |
4695 | } | |
4696 | if (dent == NULL) | |
4697 | entp = &ent->next; | |
4698 | } | |
4699 | *entp = to->elf.plt.plist; | |
4700 | } | |
4701 | ||
4702 | to->elf.plt.plist = from->elf.plt.plist; | |
4703 | from->elf.plt.plist = NULL; | |
4704 | } | |
4705 | } | |
4706 | ||
65f38f15 AM |
4707 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4708 | ||
4709 | static void | |
fcfa13d2 AM |
4710 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4711 | struct elf_link_hash_entry *dir, | |
4712 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4713 | { |
4714 | struct ppc_link_hash_entry *edir, *eind; | |
4715 | ||
4716 | edir = (struct ppc_link_hash_entry *) dir; | |
4717 | eind = (struct ppc_link_hash_entry *) ind; | |
4718 | ||
c79d6685 AM |
4719 | edir->is_func |= eind->is_func; |
4720 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4721 | edir->tls_mask |= eind->tls_mask; | |
4722 | if (eind->oh != NULL) | |
4723 | edir->oh = ppc_follow_link (eind->oh); | |
4724 | ||
4725 | /* If called to transfer flags for a weakdef during processing | |
4726 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4727 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4728 | if (!(ELIMINATE_COPY_RELOCS | |
4729 | && eind->elf.root.type != bfd_link_hash_indirect | |
4730 | && edir->elf.dynamic_adjusted)) | |
4731 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4732 | ||
4733 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4734 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4735 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4736 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4737 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4738 | |
411e1bfb | 4739 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4740 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4741 | { |
bbd7ec4a AM |
4742 | if (edir->dyn_relocs != NULL) |
4743 | { | |
6061a67d AM |
4744 | struct elf_dyn_relocs **pp; |
4745 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4746 | |
fcfa13d2 | 4747 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4748 | list. Merge any entries against the same section. */ |
4749 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4750 | { | |
6061a67d | 4751 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4752 | |
4753 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4754 | if (q->sec == p->sec) | |
4755 | { | |
4756 | q->pc_count += p->pc_count; | |
4757 | q->count += p->count; | |
4758 | *pp = p->next; | |
4759 | break; | |
4760 | } | |
4761 | if (q == NULL) | |
4762 | pp = &p->next; | |
4763 | } | |
4764 | *pp = edir->dyn_relocs; | |
4765 | } | |
4766 | ||
65f38f15 AM |
4767 | edir->dyn_relocs = eind->dyn_relocs; |
4768 | eind->dyn_relocs = NULL; | |
4769 | } | |
65f38f15 | 4770 | |
68ba6d40 AM |
4771 | /* If we were called to copy over info for a weak sym, that's all. |
4772 | You might think dyn_relocs need not be copied over; After all, | |
4773 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4774 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4775 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4776 | dyn_relocs in read-only sections, and it does so on what is the | |
4777 | DIR sym here. */ | |
4778 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4779 | return; | |
4780 | ||
81848ca0 AM |
4781 | /* Copy over got entries that we may have already seen to the |
4782 | symbol which just became indirect. */ | |
411e1bfb AM |
4783 | if (eind->elf.got.glist != NULL) |
4784 | { | |
4785 | if (edir->elf.got.glist != NULL) | |
4786 | { | |
4787 | struct got_entry **entp; | |
4788 | struct got_entry *ent; | |
4789 | ||
4790 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4791 | { | |
4792 | struct got_entry *dent; | |
4793 | ||
4794 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4795 | if (dent->addend == ent->addend | |
e717da7e | 4796 | && dent->owner == ent->owner |
411e1bfb AM |
4797 | && dent->tls_type == ent->tls_type) |
4798 | { | |
4799 | dent->got.refcount += ent->got.refcount; | |
4800 | *entp = ent->next; | |
4801 | break; | |
4802 | } | |
4803 | if (dent == NULL) | |
4804 | entp = &ent->next; | |
4805 | } | |
4806 | *entp = edir->elf.got.glist; | |
4807 | } | |
4808 | ||
4809 | edir->elf.got.glist = eind->elf.got.glist; | |
4810 | eind->elf.got.glist = NULL; | |
4811 | } | |
4812 | ||
4813 | /* And plt entries. */ | |
40d16e0b | 4814 | move_plt_plist (eind, edir); |
411e1bfb | 4815 | |
fcfa13d2 | 4816 | if (eind->elf.dynindx != -1) |
411e1bfb | 4817 | { |
fcfa13d2 AM |
4818 | if (edir->elf.dynindx != -1) |
4819 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4820 | edir->elf.dynstr_index); | |
411e1bfb AM |
4821 | edir->elf.dynindx = eind->elf.dynindx; |
4822 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4823 | eind->elf.dynindx = -1; | |
4824 | eind->elf.dynstr_index = 0; | |
4825 | } | |
411e1bfb AM |
4826 | } |
4827 | ||
8387904d AM |
4828 | /* Find the function descriptor hash entry from the given function code |
4829 | hash entry FH. Link the entries via their OH fields. */ | |
4830 | ||
4831 | static struct ppc_link_hash_entry * | |
b31867b6 | 4832 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4833 | { |
4834 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4835 | ||
4836 | if (fdh == NULL) | |
4837 | { | |
4838 | const char *fd_name = fh->elf.root.root.string + 1; | |
4839 | ||
4840 | fdh = (struct ppc_link_hash_entry *) | |
4841 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4842 | if (fdh == NULL) |
4843 | return fdh; | |
4844 | ||
4845 | fdh->is_func_descriptor = 1; | |
4846 | fdh->oh = fh; | |
4847 | fh->is_func = 1; | |
4848 | fh->oh = fdh; | |
8387904d AM |
4849 | } |
4850 | ||
b31867b6 | 4851 | return ppc_follow_link (fdh); |
8387904d AM |
4852 | } |
4853 | ||
bb700d78 AM |
4854 | /* Make a fake function descriptor sym for the code sym FH. */ |
4855 | ||
4856 | static struct ppc_link_hash_entry * | |
4857 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4858 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4859 | { |
4860 | bfd *abfd; | |
4861 | asymbol *newsym; | |
4862 | struct bfd_link_hash_entry *bh; | |
4863 | struct ppc_link_hash_entry *fdh; | |
4864 | ||
4865 | abfd = fh->elf.root.u.undef.abfd; | |
4866 | newsym = bfd_make_empty_symbol (abfd); | |
4867 | newsym->name = fh->elf.root.root.string + 1; | |
4868 | newsym->section = bfd_und_section_ptr; | |
4869 | newsym->value = 0; | |
908b32fc | 4870 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4871 | |
4872 | bh = NULL; | |
4873 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4874 | newsym->flags, newsym->section, | |
4875 | newsym->value, NULL, FALSE, FALSE, | |
4876 | &bh)) | |
4877 | return NULL; | |
4878 | ||
4879 | fdh = (struct ppc_link_hash_entry *) bh; | |
4880 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4881 | fdh->fake = 1; |
4882 | fdh->is_func_descriptor = 1; | |
4883 | fdh->oh = fh; | |
4884 | fh->is_func = 1; | |
4885 | fh->oh = fdh; | |
bb700d78 AM |
4886 | return fdh; |
4887 | } | |
4888 | ||
8387904d AM |
4889 | /* Fix function descriptor symbols defined in .opd sections to be |
4890 | function type. */ | |
555cd476 AM |
4891 | |
4892 | static bfd_boolean | |
c16153ae | 4893 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4894 | struct bfd_link_info *info, |
555cd476 | 4895 | Elf_Internal_Sym *isym, |
6911b7dc | 4896 | const char **name, |
555cd476 AM |
4897 | flagword *flags ATTRIBUTE_UNUSED, |
4898 | asection **sec, | |
b53dfeb2 | 4899 | bfd_vma *value) |
555cd476 | 4900 | { |
a43942db | 4901 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
4902 | && (ibfd->flags & DYNAMIC) == 0 |
4903 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 4904 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
f64b2e8d | 4905 | |
b53dfeb2 | 4906 | if (*sec != NULL |
f1885d1e | 4907 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4908 | { |
4909 | asection *code_sec; | |
4910 | ||
4911 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4912 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4913 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4914 | ||
4915 | /* If the symbol is a function defined in .opd, and the function | |
4916 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4917 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4918 | && (*sec)->reloc_count != 0 |
4919 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4920 | FALSE) != (bfd_vma) -1 | |
4921 | && discarded_section (code_sec)) | |
4922 | { | |
4923 | *sec = bfd_und_section_ptr; | |
4924 | isym->st_shndx = SHN_UNDEF; | |
4925 | } | |
4926 | } | |
dbd1e97e AM |
4927 | else if (*sec != NULL |
4928 | && strcmp ((*sec)->name, ".toc") == 0 | |
4929 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4930 | { | |
4931 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4932 | if (htab != NULL) | |
4933 | htab->params->object_in_toc = 1; | |
4934 | } | |
433817dd | 4935 | |
6911b7dc AM |
4936 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4937 | { | |
4938 | if (abiversion (ibfd) == 0) | |
4939 | set_abiversion (ibfd, 2); | |
4940 | else if (abiversion (ibfd) == 1) | |
4941 | { | |
4942 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4943 | " for ABI version 1\n"), name); | |
4944 | bfd_set_error (bfd_error_bad_value); | |
4945 | return FALSE; | |
4946 | } | |
4947 | } | |
4948 | ||
555cd476 AM |
4949 | return TRUE; |
4950 | } | |
4951 | ||
6911b7dc AM |
4952 | /* Merge non-visibility st_other attributes: local entry point. */ |
4953 | ||
4954 | static void | |
4955 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4956 | const Elf_Internal_Sym *isym, | |
4957 | bfd_boolean definition, | |
4958 | bfd_boolean dynamic) | |
4959 | { | |
4960 | if (definition && !dynamic) | |
4961 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4962 | | ELF_ST_VISIBILITY (h->other)); | |
4963 | } | |
4964 | ||
8387904d | 4965 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4966 | inclusion of a new ABI object archive that defines "bar". |
4967 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4968 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4969 | |
4970 | static struct elf_link_hash_entry * | |
4971 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4972 | struct bfd_link_info *info, | |
4973 | const char *name) | |
4974 | { | |
4975 | struct elf_link_hash_entry *h; | |
4976 | char *dot_name; | |
4977 | size_t len; | |
4978 | ||
4979 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4980 | if (h != NULL |
4981 | /* Don't return this sym if it is a fake function descriptor | |
4982 | created by add_symbol_adjust. */ | |
4983 | && !(h->root.type == bfd_link_hash_undefweak | |
4984 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4985 | return h; |
4986 | ||
4987 | if (name[0] == '.') | |
4988 | return h; | |
4989 | ||
4990 | len = strlen (name); | |
4991 | dot_name = bfd_alloc (abfd, len + 2); | |
4992 | if (dot_name == NULL) | |
4993 | return (struct elf_link_hash_entry *) 0 - 1; | |
4994 | dot_name[0] = '.'; | |
4995 | memcpy (dot_name + 1, name, len + 1); | |
4996 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4997 | bfd_release (abfd, dot_name); | |
4998 | return h; | |
4999 | } | |
5000 | ||
5001 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5002 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5003 | are made weak. This stops later archive searches from including an | |
5004 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5005 | prevents the linker complaining about undefined symbols. |
5006 | We also check and correct mismatched symbol visibility here. The | |
5007 | most restrictive visibility of the function descriptor and the | |
5008 | function entry symbol is used. */ | |
8387904d AM |
5009 | |
5010 | static bfd_boolean | |
b3fac117 | 5011 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5012 | { |
8387904d AM |
5013 | struct ppc_link_hash_table *htab; |
5014 | struct ppc_link_hash_entry *fdh; | |
5015 | ||
b3fac117 | 5016 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
5017 | return TRUE; |
5018 | ||
b3fac117 AM |
5019 | if (eh->elf.root.type == bfd_link_hash_warning) |
5020 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5021 | |
b3fac117 AM |
5022 | if (eh->elf.root.root.string[0] != '.') |
5023 | abort (); | |
8387904d | 5024 | |
b3fac117 | 5025 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5026 | if (htab == NULL) |
5027 | return FALSE; | |
5028 | ||
b31867b6 AM |
5029 | fdh = lookup_fdh (eh, htab); |
5030 | if (fdh == NULL) | |
5031 | { | |
0e1862bb | 5032 | if (!bfd_link_relocatable (info) |
b31867b6 AM |
5033 | && (eh->elf.root.type == bfd_link_hash_undefined |
5034 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5035 | && eh->elf.ref_regular) | |
5036 | { | |
5037 | /* Make an undefweak function descriptor sym, which is enough to | |
5038 | pull in an --as-needed shared lib, but won't cause link | |
5039 | errors. Archives are handled elsewhere. */ | |
5040 | fdh = make_fdh (info, eh); | |
5041 | if (fdh == NULL) | |
5042 | return FALSE; | |
5043 | fdh->elf.ref_regular = 1; | |
5044 | } | |
bb700d78 | 5045 | } |
b31867b6 | 5046 | else |
8387904d | 5047 | { |
35b0ce59 AM |
5048 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5049 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
5050 | if (entry_vis < descr_vis) | |
5051 | fdh->elf.other += entry_vis - descr_vis; | |
5052 | else if (entry_vis > descr_vis) | |
5053 | eh->elf.other += descr_vis - entry_vis; | |
5054 | ||
e87d886e AM |
5055 | if ((fdh->elf.root.type == bfd_link_hash_defined |
5056 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5057 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
5058 | { |
5059 | eh->elf.root.type = bfd_link_hash_undefweak; | |
5060 | eh->was_undefined = 1; | |
5061 | htab->twiddled_syms = 1; | |
5062 | } | |
8387904d | 5063 | } |
99877b66 | 5064 | |
8387904d AM |
5065 | return TRUE; |
5066 | } | |
5067 | ||
f6c7c3e8 AM |
5068 | /* Set up opd section info and abiversion for IBFD, and process list |
5069 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5070 | |
8387904d | 5071 | static bfd_boolean |
f6c7c3e8 | 5072 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5073 | { |
99877b66 | 5074 | struct ppc_link_hash_table *htab; |
b3fac117 | 5075 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5076 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5077 | |
459609d6 | 5078 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5079 | { |
459609d6 AM |
5080 | if (abiversion (ibfd) == 0) |
5081 | set_abiversion (ibfd, 1); | |
5082 | else if (abiversion (ibfd) == 2) | |
f6c7c3e8 | 5083 | { |
459609d6 AM |
5084 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
5085 | " version %d\n"), | |
5086 | ibfd, abiversion (ibfd)); | |
5087 | bfd_set_error (bfd_error_bad_value); | |
5088 | return FALSE; | |
f6c7c3e8 AM |
5089 | } |
5090 | ||
459609d6 AM |
5091 | if ((ibfd->flags & DYNAMIC) == 0 |
5092 | && (opd->flags & SEC_RELOC) != 0 | |
5093 | && opd->reloc_count != 0 | |
5094 | && !bfd_is_abs_section (opd->output_section)) | |
b3fac117 | 5095 | { |
459609d6 AM |
5096 | /* Garbage collection needs some extra help with .opd sections. |
5097 | We don't want to necessarily keep everything referenced by | |
5098 | relocs in .opd, as that would keep all functions. Instead, | |
5099 | if we reference an .opd symbol (a function descriptor), we | |
5100 | want to keep the function code symbol's section. This is | |
5101 | easy for global symbols, but for local syms we need to keep | |
5102 | information about the associated function section. */ | |
5103 | bfd_size_type amt; | |
5104 | asection **opd_sym_map; | |
5105 | ||
51aecdc5 | 5106 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
459609d6 AM |
5107 | opd_sym_map = bfd_zalloc (ibfd, amt); |
5108 | if (opd_sym_map == NULL) | |
b3fac117 | 5109 | return FALSE; |
459609d6 AM |
5110 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
5111 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
5112 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
b3fac117 AM |
5113 | } |
5114 | } | |
5115 | ||
459609d6 AM |
5116 | if (!is_ppc64_elf (info->output_bfd)) |
5117 | return TRUE; | |
5118 | htab = ppc_hash_table (info); | |
5119 | if (htab == NULL) | |
5120 | return FALSE; | |
5121 | ||
5122 | /* For input files without an explicit abiversion in e_flags | |
5123 | we should have flagged any with symbol st_other bits set | |
5124 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5125 | Set the output abiversion if not yet set, and for any input | |
5126 | still ambiguous, take its abiversion from the output. | |
5127 | Differences in ABI are reported later. */ | |
5128 | if (abiversion (info->output_bfd) == 0) | |
5129 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5130 | else if (abiversion (ibfd) == 0) | |
5131 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
5132 | ||
5133 | p = &htab->dot_syms; | |
5134 | while ((eh = *p) != NULL) | |
5135 | { | |
5136 | *p = NULL; | |
5137 | if (&eh->elf == htab->elf.hgot) | |
5138 | ; | |
5139 | else if (htab->elf.hgot == NULL | |
5140 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5141 | htab->elf.hgot = &eh->elf; | |
5142 | else if (!add_symbol_adjust (eh, info)) | |
5143 | return FALSE; | |
5144 | p = &eh->u.next_dot_sym; | |
5145 | } | |
5146 | ||
b3fac117 AM |
5147 | /* Clear the list for non-ppc64 input files. */ |
5148 | p = &htab->dot_syms; | |
5149 | while ((eh = *p) != NULL) | |
5150 | { | |
5151 | *p = NULL; | |
5152 | p = &eh->u.next_dot_sym; | |
5153 | } | |
99877b66 AM |
5154 | |
5155 | /* We need to fix the undefs list for any syms we have twiddled to | |
57e7d118 | 5156 | undefweak. */ |
99877b66 AM |
5157 | if (htab->twiddled_syms) |
5158 | { | |
77cfaee6 | 5159 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
5160 | htab->twiddled_syms = 0; |
5161 | } | |
b3fac117 | 5162 | return TRUE; |
8387904d AM |
5163 | } |
5164 | ||
97fed1c9 JJ |
5165 | /* Undo hash table changes when an --as-needed input file is determined |
5166 | not to be needed. */ | |
5167 | ||
5168 | static bfd_boolean | |
e5034e59 AM |
5169 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5170 | struct bfd_link_info *info, | |
5171 | enum notice_asneeded_action act) | |
97fed1c9 | 5172 | { |
e5034e59 AM |
5173 | if (act == notice_not_needed) |
5174 | { | |
5175 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5176 | |
e5034e59 AM |
5177 | if (htab == NULL) |
5178 | return FALSE; | |
4dfe6ac6 | 5179 | |
e5034e59 AM |
5180 | htab->dot_syms = NULL; |
5181 | } | |
5182 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5183 | } |
5184 | ||
aa374f67 AM |
5185 | /* If --just-symbols against a final linked binary, then assume we need |
5186 | toc adjusting stubs when calling functions defined there. */ | |
5187 | ||
5188 | static void | |
5189 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5190 | { | |
5191 | if ((sec->flags & SEC_CODE) != 0 | |
5192 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5193 | && is_ppc64_elf (sec->owner)) | |
5194 | { | |
2c3f079f AM |
5195 | if (abiversion (sec->owner) >= 2 |
5196 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5197 | sec->has_toc_reloc = 1; |
5198 | } | |
5199 | _bfd_elf_link_just_syms (sec, info); | |
5200 | } | |
5201 | ||
e054468f | 5202 | static struct plt_entry ** |
4ce794b7 AM |
5203 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5204 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5205 | { |
5206 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5207 | struct plt_entry **local_plt; |
f961d9dd | 5208 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5209 | |
5210 | if (local_got_ents == NULL) | |
5211 | { | |
5212 | bfd_size_type size = symtab_hdr->sh_info; | |
5213 | ||
e054468f AM |
5214 | size *= (sizeof (*local_got_ents) |
5215 | + sizeof (*local_plt) | |
5216 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5217 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5218 | if (local_got_ents == NULL) |
e054468f | 5219 | return NULL; |
411e1bfb AM |
5220 | elf_local_got_ents (abfd) = local_got_ents; |
5221 | } | |
5222 | ||
e054468f | 5223 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5224 | { |
5225 | struct got_entry *ent; | |
5226 | ||
5227 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5228 | if (ent->addend == r_addend |
5229 | && ent->owner == abfd | |
5230 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5231 | break; |
5232 | if (ent == NULL) | |
5233 | { | |
5234 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5235 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5236 | if (ent == NULL) |
5237 | return FALSE; | |
5238 | ent->next = local_got_ents[r_symndx]; | |
5239 | ent->addend = r_addend; | |
e717da7e | 5240 | ent->owner = abfd; |
411e1bfb | 5241 | ent->tls_type = tls_type; |
927be08e | 5242 | ent->is_indirect = FALSE; |
411e1bfb AM |
5243 | ent->got.refcount = 0; |
5244 | local_got_ents[r_symndx] = ent; | |
5245 | } | |
5246 | ent->got.refcount += 1; | |
5247 | } | |
5248 | ||
e054468f | 5249 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5250 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5251 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5252 | |
5253 | return local_plt + r_symndx; | |
65f38f15 AM |
5254 | } |
5255 | ||
411e1bfb | 5256 | static bfd_boolean |
e054468f | 5257 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5258 | { |
411e1bfb | 5259 | struct plt_entry *ent; |
1e2f5b6e | 5260 | |
e054468f | 5261 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5262 | if (ent->addend == addend) |
5263 | break; | |
5264 | if (ent == NULL) | |
1e2f5b6e | 5265 | { |
411e1bfb | 5266 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5267 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5268 | if (ent == NULL) |
5269 | return FALSE; | |
e054468f | 5270 | ent->next = *plist; |
411e1bfb AM |
5271 | ent->addend = addend; |
5272 | ent->plt.refcount = 0; | |
e054468f | 5273 | *plist = ent; |
1e2f5b6e | 5274 | } |
411e1bfb | 5275 | ent->plt.refcount += 1; |
b34976b6 | 5276 | return TRUE; |
1e2f5b6e AM |
5277 | } |
5278 | ||
e054468f AM |
5279 | static bfd_boolean |
5280 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5281 | { | |
5282 | return (r_type == R_PPC64_REL24 | |
5283 | || r_type == R_PPC64_REL14 | |
5284 | || r_type == R_PPC64_REL14_BRTAKEN | |
5285 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5286 | || r_type == R_PPC64_ADDR24 | |
5287 | || r_type == R_PPC64_ADDR14 | |
5288 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5289 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5290 | } | |
5291 | ||
5bd4f169 | 5292 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5293 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5294 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5295 | |
b34976b6 | 5296 | static bfd_boolean |
4ce794b7 AM |
5297 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5298 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5299 | { |
65f38f15 | 5300 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5301 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5302 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5303 | const Elf_Internal_Rela *rel; |
5304 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5305 | asection *sreloc; |
1e2f5b6e | 5306 | asection **opd_sym_map; |
3a71aa26 | 5307 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5308 | |
0e1862bb | 5309 | if (bfd_link_relocatable (info)) |
b34976b6 | 5310 | return TRUE; |
5bd4f169 | 5311 | |
680a3378 AM |
5312 | /* Don't do anything special with non-loaded, non-alloced sections. |
5313 | In particular, any relocs in such sections should not affect GOT | |
5314 | and PLT reference counting (ie. we don't allow them to create GOT | |
5315 | or PLT entries), there's no possibility or desire to optimize TLS | |
5316 | relocs, and there's not much point in propagating relocs to shared | |
5317 | libs that the dynamic linker won't relocate. */ | |
5318 | if ((sec->flags & SEC_ALLOC) == 0) | |
5319 | return TRUE; | |
5320 | ||
0c8d6e5c | 5321 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5322 | |
65f38f15 | 5323 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5324 | if (htab == NULL) |
5325 | return FALSE; | |
5326 | ||
3a71aa26 AM |
5327 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5328 | FALSE, FALSE, TRUE); | |
5329 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5330 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5331 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5332 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5333 | sreloc = NULL; |
1e2f5b6e | 5334 | opd_sym_map = NULL; |
f6c7c3e8 AM |
5335 | if (ppc64_elf_section_data (sec) != NULL |
5336 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
5337 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
5bd4f169 AM |
5338 | |
5339 | rel_end = relocs + sec->reloc_count; | |
5340 | for (rel = relocs; rel < rel_end; rel++) | |
5341 | { | |
5342 | unsigned long r_symndx; | |
5343 | struct elf_link_hash_entry *h; | |
04c9666a | 5344 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5345 | int tls_type; |
7c8fe5c4 | 5346 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5347 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5348 | |
5349 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5350 | if (r_symndx < symtab_hdr->sh_info) | |
5351 | h = NULL; | |
5352 | else | |
973a3492 L |
5353 | { |
5354 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5355 | h = elf_follow_link (h); |
81fbe831 AM |
5356 | |
5357 | /* PR15323, ref flags aren't set for references in the same | |
5358 | object. */ | |
5359 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5360 | |
5361 | if (h == htab->elf.hgot) | |
5362 | sec->has_toc_reloc = 1; | |
973a3492 | 5363 | } |
5bd4f169 | 5364 | |
727fc41e | 5365 | tls_type = 0; |
e054468f | 5366 | ifunc = NULL; |
25f23106 AM |
5367 | if (h != NULL) |
5368 | { | |
5369 | if (h->type == STT_GNU_IFUNC) | |
5370 | { | |
5371 | h->needs_plt = 1; | |
5372 | ifunc = &h->plt.plist; | |
5373 | } | |
5374 | } | |
5375 | else | |
5376 | { | |
5377 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5378 | abfd, r_symndx); | |
5379 | if (isym == NULL) | |
5380 | return FALSE; | |
5381 | ||
5382 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5383 | { | |
5384 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5385 | rel->r_addend, PLT_IFUNC); | |
5386 | if (ifunc == NULL) | |
5387 | return FALSE; | |
5388 | } | |
5389 | } | |
727fc41e | 5390 | |
cbf95972 | 5391 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5392 | switch (r_type) |
5bd4f169 | 5393 | { |
727fc41e AM |
5394 | case R_PPC64_TLSGD: |
5395 | case R_PPC64_TLSLD: | |
5396 | /* These special tls relocs tie a call to __tls_get_addr with | |
5397 | its parameter symbol. */ | |
5398 | break; | |
5399 | ||
411e1bfb AM |
5400 | case R_PPC64_GOT_TLSLD16: |
5401 | case R_PPC64_GOT_TLSLD16_LO: | |
5402 | case R_PPC64_GOT_TLSLD16_HI: | |
5403 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5404 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5405 | goto dogottls; |
5406 | ||
5407 | case R_PPC64_GOT_TLSGD16: | |
5408 | case R_PPC64_GOT_TLSGD16_LO: | |
5409 | case R_PPC64_GOT_TLSGD16_HI: | |
5410 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5411 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5412 | goto dogottls; |
5413 | ||
5414 | case R_PPC64_GOT_TPREL16_DS: | |
5415 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5416 | case R_PPC64_GOT_TPREL16_HI: | |
5417 | case R_PPC64_GOT_TPREL16_HA: | |
0e1862bb | 5418 | if (bfd_link_pic (info)) |
411e1bfb AM |
5419 | info->flags |= DF_STATIC_TLS; |
5420 | tls_type = TLS_TLS | TLS_TPREL; | |
5421 | goto dogottls; | |
5422 | ||
5423 | case R_PPC64_GOT_DTPREL16_DS: | |
5424 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5425 | case R_PPC64_GOT_DTPREL16_HI: | |
5426 | case R_PPC64_GOT_DTPREL16_HA: | |
5427 | tls_type = TLS_TLS | TLS_DTPREL; | |
5428 | dogottls: | |
5429 | sec->has_tls_reloc = 1; | |
5430 | /* Fall thru */ | |
5431 | ||
5bd4f169 | 5432 | case R_PPC64_GOT16: |
5bd4f169 | 5433 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5434 | case R_PPC64_GOT16_HA: |
5435 | case R_PPC64_GOT16_HI: | |
5436 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5437 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5438 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5439 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5440 | if (r_type == R_PPC64_GOT_TLSLD16 |
5441 | || r_type == R_PPC64_GOT_TLSGD16 | |
5442 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5443 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5444 | || r_type == R_PPC64_GOT16 | |
5445 | || r_type == R_PPC64_GOT16_DS) | |
5446 | { | |
5447 | htab->do_multi_toc = 1; | |
d77c8a4b | 5448 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5449 | } |
5450 | ||
e717da7e AM |
5451 | if (ppc64_elf_tdata (abfd)->got == NULL |
5452 | && !create_got_section (abfd, info)) | |
b34976b6 | 5453 | return FALSE; |
5bd4f169 AM |
5454 | |
5455 | if (h != NULL) | |
5456 | { | |
411e1bfb AM |
5457 | struct ppc_link_hash_entry *eh; |
5458 | struct got_entry *ent; | |
65f38f15 | 5459 | |
411e1bfb AM |
5460 | eh = (struct ppc_link_hash_entry *) h; |
5461 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5462 | if (ent->addend == rel->r_addend | |
e717da7e | 5463 | && ent->owner == abfd |
411e1bfb AM |
5464 | && ent->tls_type == tls_type) |
5465 | break; | |
5466 | if (ent == NULL) | |
5bd4f169 | 5467 | { |
411e1bfb | 5468 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5469 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5470 | if (ent == NULL) |
b34976b6 | 5471 | return FALSE; |
411e1bfb AM |
5472 | ent->next = eh->elf.got.glist; |
5473 | ent->addend = rel->r_addend; | |
e717da7e | 5474 | ent->owner = abfd; |
411e1bfb | 5475 | ent->tls_type = tls_type; |
927be08e | 5476 | ent->is_indirect = FALSE; |
411e1bfb AM |
5477 | ent->got.refcount = 0; |
5478 | eh->elf.got.glist = ent; | |
5bd4f169 | 5479 | } |
411e1bfb | 5480 | ent->got.refcount += 1; |
e7b938ca | 5481 | eh->tls_mask |= tls_type; |
5bd4f169 | 5482 | } |
411e1bfb AM |
5483 | else |
5484 | /* This is a global offset table entry for a local symbol. */ | |
5485 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5486 | rel->r_addend, tls_type)) | |
5487 | return FALSE; | |
a345bc8d AM |
5488 | |
5489 | /* We may also need a plt entry if the symbol turns out to be | |
5490 | an ifunc. */ | |
0e1862bb | 5491 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5492 | { |
5493 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5494 | return FALSE; | |
5495 | } | |
5bd4f169 AM |
5496 | break; |
5497 | ||
5bd4f169 | 5498 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5499 | case R_PPC64_PLT16_HI: |
5500 | case R_PPC64_PLT16_LO: | |
5501 | case R_PPC64_PLT32: | |
5502 | case R_PPC64_PLT64: | |
cbf95972 AM |
5503 | /* This symbol requires a procedure linkage table entry. */ |
5504 | plt_list = ifunc; | |
5505 | if (h != NULL) | |
e054468f | 5506 | { |
e054468f AM |
5507 | h->needs_plt = 1; |
5508 | if (h->root.root.string[0] == '.' | |
5509 | && h->root.root.string[1] != '\0') | |
5510 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 AM |
5511 | plt_list = &h->plt.plist; |
5512 | } | |
5513 | if (plt_list == NULL) | |
5514 | { | |
5515 | /* It does not make sense to have a procedure linkage | |
5516 | table entry for a non-ifunc local symbol. */ | |
5517 | info->callbacks->einfo | |
5518 | (_("%P: %H: %s reloc against local symbol\n"), | |
5519 | abfd, sec, rel->r_offset, | |
5520 | ppc64_elf_howto_table[r_type]->name); | |
5521 | bfd_set_error (bfd_error_bad_value); | |
5522 | return FALSE; | |
e054468f | 5523 | } |
cbf95972 AM |
5524 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5525 | return FALSE; | |
5bd4f169 AM |
5526 | break; |
5527 | ||
5528 | /* The following relocations don't need to propagate the | |
5529 | relocation if linking a shared object since they are | |
5530 | section relative. */ | |
5531 | case R_PPC64_SECTOFF: | |
5532 | case R_PPC64_SECTOFF_LO: | |
5533 | case R_PPC64_SECTOFF_HI: | |
5534 | case R_PPC64_SECTOFF_HA: | |
5535 | case R_PPC64_SECTOFF_DS: | |
5536 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5537 | case R_PPC64_DTPREL16: |
5538 | case R_PPC64_DTPREL16_LO: | |
5539 | case R_PPC64_DTPREL16_HI: | |
5540 | case R_PPC64_DTPREL16_HA: | |
5541 | case R_PPC64_DTPREL16_DS: | |
5542 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5543 | case R_PPC64_DTPREL16_HIGH: |
5544 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5545 | case R_PPC64_DTPREL16_HIGHER: |
5546 | case R_PPC64_DTPREL16_HIGHERA: | |
5547 | case R_PPC64_DTPREL16_HIGHEST: | |
5548 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5549 | break; |
5550 | ||
ad8e1ba5 | 5551 | /* Nor do these. */ |
25f23106 AM |
5552 | case R_PPC64_REL16: |
5553 | case R_PPC64_REL16_LO: | |
5554 | case R_PPC64_REL16_HI: | |
5555 | case R_PPC64_REL16_HA: | |
a680de9a | 5556 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5557 | break; |
5558 | ||
45965137 AM |
5559 | /* Not supported as a dynamic relocation. */ |
5560 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5561 | if (bfd_link_pic (info)) |
45965137 AM |
5562 | { |
5563 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5564 | ppc_howto_init (); | |
5565 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
5566 | "in shared libraries and PIEs.\n"), | |
5567 | abfd, sec, rel->r_offset, | |
5568 | ppc64_elf_howto_table[r_type]->name); | |
5569 | bfd_set_error (bfd_error_bad_value); | |
5570 | return FALSE; | |
5571 | } | |
5572 | break; | |
5573 | ||
ad8e1ba5 | 5574 | case R_PPC64_TOC16: |
33c0ec9d AM |
5575 | case R_PPC64_TOC16_DS: |
5576 | htab->do_multi_toc = 1; | |
d77c8a4b | 5577 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5578 | case R_PPC64_TOC16_LO: |
5579 | case R_PPC64_TOC16_HI: | |
5580 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5581 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5582 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5583 | break; |
5584 | ||
006589cf AM |
5585 | /* Marker reloc. */ |
5586 | case R_PPC64_ENTRY: | |
5587 | break; | |
5588 | ||
5bd4f169 AM |
5589 | /* This relocation describes the C++ object vtable hierarchy. |
5590 | Reconstruct it for later use during GC. */ | |
5591 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5592 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5593 | return FALSE; |
5bd4f169 AM |
5594 | break; |
5595 | ||
5596 | /* This relocation describes which C++ vtable entries are actually | |
5597 | used. Record for later use during GC. */ | |
5598 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5599 | BFD_ASSERT (h != NULL); |
5600 | if (h != NULL | |
5601 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5602 | return FALSE; |
5bd4f169 AM |
5603 | break; |
5604 | ||
721956f4 AM |
5605 | case R_PPC64_REL14: |
5606 | case R_PPC64_REL14_BRTAKEN: | |
5607 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5608 | { |
5609 | asection *dest = NULL; | |
5610 | ||
5611 | /* Heuristic: If jumping outside our section, chances are | |
5612 | we are going to need a stub. */ | |
5613 | if (h != NULL) | |
5614 | { | |
5615 | /* If the sym is weak it may be overridden later, so | |
5616 | don't assume we know where a weak sym lives. */ | |
5617 | if (h->root.type == bfd_link_hash_defined) | |
5618 | dest = h->root.u.def.section; | |
5619 | } | |
5620 | else | |
87d72d41 AM |
5621 | { |
5622 | Elf_Internal_Sym *isym; | |
5623 | ||
5624 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5625 | abfd, r_symndx); | |
5626 | if (isym == NULL) | |
5627 | return FALSE; | |
5628 | ||
5629 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5630 | } | |
5631 | ||
220c76dd | 5632 | if (dest != sec) |
7c8fe5c4 | 5633 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5634 | } |
721956f4 AM |
5635 | /* Fall through. */ |
5636 | ||
5d1634d7 | 5637 | case R_PPC64_REL24: |
cbf95972 AM |
5638 | plt_list = ifunc; |
5639 | if (h != NULL) | |
5d1634d7 | 5640 | { |
e054468f AM |
5641 | h->needs_plt = 1; |
5642 | if (h->root.root.string[0] == '.' | |
5643 | && h->root.root.string[1] != '\0') | |
5644 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5645 | |
3a71aa26 | 5646 | if (h == tga || h == dottga) |
cbf95972 AM |
5647 | { |
5648 | sec->has_tls_reloc = 1; | |
5649 | if (rel != relocs | |
5650 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5651 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5652 | /* We have a new-style __tls_get_addr call with | |
5653 | a marker reloc. */ | |
5654 | ; | |
5655 | else | |
5656 | /* Mark this section as having an old-style call. */ | |
5657 | sec->has_tls_get_addr_call = 1; | |
5658 | } | |
5659 | plt_list = &h->plt.plist; | |
411e1bfb | 5660 | } |
cbf95972 AM |
5661 | |
5662 | /* We may need a .plt entry if the function this reloc | |
5663 | refers to is in a shared lib. */ | |
5664 | if (plt_list | |
5665 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5666 | return FALSE; | |
411e1bfb AM |
5667 | break; |
5668 | ||
cbf95972 AM |
5669 | case R_PPC64_ADDR14: |
5670 | case R_PPC64_ADDR14_BRNTAKEN: | |
5671 | case R_PPC64_ADDR14_BRTAKEN: | |
5672 | case R_PPC64_ADDR24: | |
5673 | goto dodyn; | |
5674 | ||
411e1bfb AM |
5675 | case R_PPC64_TPREL64: |
5676 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
0e1862bb | 5677 | if (bfd_link_pic (info)) |
411e1bfb AM |
5678 | info->flags |= DF_STATIC_TLS; |
5679 | goto dotlstoc; | |
5680 | ||
5681 | case R_PPC64_DTPMOD64: | |
5682 | if (rel + 1 < rel_end | |
5683 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5684 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5685 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5686 | else |
951fd09b | 5687 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5688 | goto dotlstoc; |
5689 | ||
5690 | case R_PPC64_DTPREL64: | |
5691 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5692 | if (rel != relocs | |
5693 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5694 | && rel[-1].r_offset == rel->r_offset - 8) | |
5695 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5696 | Don't mark with TLS_DTPREL. */ | |
5697 | goto dodyn; | |
5698 | ||
5699 | dotlstoc: | |
5700 | sec->has_tls_reloc = 1; | |
5701 | if (h != NULL) | |
5702 | { | |
5703 | struct ppc_link_hash_entry *eh; | |
5704 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5705 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5706 | } |
5707 | else | |
5708 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5709 | rel->r_addend, tls_type)) | |
5710 | return FALSE; | |
5711 | ||
7c8fe5c4 AM |
5712 | ppc64_sec = ppc64_elf_section_data (sec); |
5713 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5714 | { |
3a71aa26 AM |
5715 | bfd_size_type amt; |
5716 | ||
e7b938ca | 5717 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5718 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5719 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5720 | if (ppc64_sec->u.toc.symndx == NULL) | |
5721 | return FALSE; | |
5722 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5723 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5724 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5725 | return FALSE; |
7c8fe5c4 AM |
5726 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5727 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5728 | } |
5729 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5730 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5731 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5732 | |
5733 | /* Mark the second slot of a GD or LD entry. | |
5734 | -1 to indicate GD and -2 to indicate LD. */ | |
5735 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5736 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5737 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5738 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5739 | goto dodyn; |
5740 | ||
5741 | case R_PPC64_TPREL16: | |
5742 | case R_PPC64_TPREL16_LO: | |
5743 | case R_PPC64_TPREL16_HI: | |
5744 | case R_PPC64_TPREL16_HA: | |
5745 | case R_PPC64_TPREL16_DS: | |
5746 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5747 | case R_PPC64_TPREL16_HIGH: |
5748 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5749 | case R_PPC64_TPREL16_HIGHER: |
5750 | case R_PPC64_TPREL16_HIGHERA: | |
5751 | case R_PPC64_TPREL16_HIGHEST: | |
5752 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 5753 | if (bfd_link_pic (info)) |
411e1bfb | 5754 | { |
afb93314 | 5755 | info->flags |= DF_STATIC_TLS; |
411e1bfb | 5756 | goto dodyn; |
5d1634d7 AM |
5757 | } |
5758 | break; | |
5759 | ||
e86ce104 | 5760 | case R_PPC64_ADDR64: |
1e2f5b6e | 5761 | if (opd_sym_map != NULL |
1e2f5b6e | 5762 | && rel + 1 < rel_end |
4ce794b7 | 5763 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5764 | { |
8387904d AM |
5765 | if (h != NULL) |
5766 | { | |
5767 | if (h->root.root.string[0] == '.' | |
5768 | && h->root.root.string[1] != 0 | |
b31867b6 | 5769 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5770 | ; |
5771 | else | |
5772 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5773 | } | |
5774 | else | |
5775 | { | |
5776 | asection *s; | |
87d72d41 | 5777 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5778 | |
87d72d41 AM |
5779 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5780 | abfd, r_symndx); | |
5781 | if (isym == NULL) | |
8387904d | 5782 | return FALSE; |
87d72d41 AM |
5783 | |
5784 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5785 | if (s != NULL && s != sec) | |
51aecdc5 | 5786 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
8387904d | 5787 | } |
1e2f5b6e | 5788 | } |
e86ce104 AM |
5789 | /* Fall through. */ |
5790 | ||
65f38f15 AM |
5791 | case R_PPC64_ADDR16: |
5792 | case R_PPC64_ADDR16_DS: | |
5793 | case R_PPC64_ADDR16_HA: | |
5794 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5795 | case R_PPC64_ADDR16_HIGH: |
5796 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5797 | case R_PPC64_ADDR16_HIGHER: |
5798 | case R_PPC64_ADDR16_HIGHERA: | |
5799 | case R_PPC64_ADDR16_HIGHEST: | |
5800 | case R_PPC64_ADDR16_HIGHESTA: | |
5801 | case R_PPC64_ADDR16_LO: | |
5802 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5803 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5804 | && rel->r_addend == 0) |
5805 | { | |
5806 | /* We may need a .plt entry if this reloc refers to a | |
5807 | function in a shared lib. */ | |
5808 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5809 | return FALSE; | |
5810 | h->pointer_equality_needed = 1; | |
5811 | } | |
5812 | /* Fall through. */ | |
5813 | ||
5814 | case R_PPC64_REL30: | |
5815 | case R_PPC64_REL32: | |
5816 | case R_PPC64_REL64: | |
65f38f15 | 5817 | case R_PPC64_ADDR32: |
65f38f15 AM |
5818 | case R_PPC64_UADDR16: |
5819 | case R_PPC64_UADDR32: | |
5820 | case R_PPC64_UADDR64: | |
5bd4f169 | 5821 | case R_PPC64_TOC: |
0e1862bb | 5822 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5823 | /* We may need a copy reloc. */ |
f5385ebf | 5824 | h->non_got_ref = 1; |
81848ca0 | 5825 | |
41bd81ab | 5826 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5827 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5828 | break; |
e86ce104 | 5829 | |
65f38f15 AM |
5830 | /* If we are creating a shared library, and this is a reloc |
5831 | against a global symbol, or a non PC relative reloc | |
5832 | against a local symbol, then we need to copy the reloc | |
5833 | into the shared library. However, if we are linking with | |
5834 | -Bsymbolic, we do not need to copy a reloc against a | |
5835 | global symbol which is defined in an object we are | |
5836 | including in the link (i.e., DEF_REGULAR is set). At | |
5837 | this point we have not seen all the input files, so it is | |
5838 | possible that DEF_REGULAR is not set now but will be set | |
5839 | later (it is never cleared). In case of a weak definition, | |
5840 | DEF_REGULAR may be cleared later by a strong definition in | |
5841 | a shared library. We account for that possibility below by | |
f4656909 | 5842 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5843 | table entry. A similar situation occurs when creating |
5844 | shared libraries and symbol visibility changes render the | |
5845 | symbol local. | |
5846 | ||
5847 | If on the other hand, we are creating an executable, we | |
5848 | may need to keep relocations for symbols satisfied by a | |
5849 | dynamic library if we manage to avoid copy relocs for the | |
5850 | symbol. */ | |
411e1bfb | 5851 | dodyn: |
0e1862bb | 5852 | if ((bfd_link_pic (info) |
1d483afe | 5853 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5854 | || (h != NULL |
198f1157 | 5855 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5856 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5857 | || !h->def_regular)))) |
f4656909 | 5858 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 5859 | && !bfd_link_pic (info) |
65f38f15 AM |
5860 | && h != NULL |
5861 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5862 | || !h->def_regular)) |
0e1862bb | 5863 | || (!bfd_link_pic (info) |
25f23106 | 5864 | && ifunc != NULL)) |
5bd4f169 | 5865 | { |
65f38f15 AM |
5866 | /* We must copy these reloc types into the output file. |
5867 | Create a reloc section in dynobj and make room for | |
5868 | this reloc. */ | |
5bd4f169 AM |
5869 | if (sreloc == NULL) |
5870 | { | |
83bac4b0 NC |
5871 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5872 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5873 | |
5bd4f169 | 5874 | if (sreloc == NULL) |
83bac4b0 | 5875 | return FALSE; |
5bd4f169 AM |
5876 | } |
5877 | ||
65f38f15 AM |
5878 | /* If this is a global symbol, we count the number of |
5879 | relocations we need for this symbol. */ | |
5880 | if (h != NULL) | |
5881 | { | |
19e08130 AM |
5882 | struct elf_dyn_relocs *p; |
5883 | struct elf_dyn_relocs **head; | |
5884 | ||
ec338859 | 5885 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5886 | p = *head; |
5887 | if (p == NULL || p->sec != sec) | |
5888 | { | |
5889 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5890 | if (p == NULL) | |
5891 | return FALSE; | |
5892 | p->next = *head; | |
5893 | *head = p; | |
5894 | p->sec = sec; | |
5895 | p->count = 0; | |
5896 | p->pc_count = 0; | |
5897 | } | |
5898 | p->count += 1; | |
5899 | if (!must_be_dyn_reloc (info, r_type)) | |
5900 | p->pc_count += 1; | |
65f38f15 AM |
5901 | } |
5902 | else | |
5903 | { | |
ec338859 AM |
5904 | /* Track dynamic relocs needed for local syms too. |
5905 | We really need local syms available to do this | |
5906 | easily. Oh well. */ | |
19e08130 AM |
5907 | struct ppc_dyn_relocs *p; |
5908 | struct ppc_dyn_relocs **head; | |
5909 | bfd_boolean is_ifunc; | |
ec338859 | 5910 | asection *s; |
6edfbbad | 5911 | void *vpp; |
87d72d41 | 5912 | Elf_Internal_Sym *isym; |
6edfbbad | 5913 | |
87d72d41 AM |
5914 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5915 | abfd, r_symndx); | |
5916 | if (isym == NULL) | |
b34976b6 | 5917 | return FALSE; |
ec338859 | 5918 | |
87d72d41 AM |
5919 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5920 | if (s == NULL) | |
5921 | s = sec; | |
5922 | ||
6edfbbad | 5923 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5924 | head = (struct ppc_dyn_relocs **) vpp; |
5925 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5926 | p = *head; | |
5927 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5928 | p = p->next; | |
5929 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5930 | { | |
5931 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5932 | if (p == NULL) | |
5933 | return FALSE; | |
5934 | p->next = *head; | |
5935 | *head = p; | |
5936 | p->sec = sec; | |
5937 | p->ifunc = is_ifunc; | |
5938 | p->count = 0; | |
5939 | } | |
5940 | p->count += 1; | |
ec338859 | 5941 | } |
65f38f15 | 5942 | } |
5bd4f169 | 5943 | break; |
65f38f15 AM |
5944 | |
5945 | default: | |
96e0dda4 | 5946 | break; |
5bd4f169 AM |
5947 | } |
5948 | } | |
5949 | ||
b34976b6 | 5950 | return TRUE; |
5bd4f169 AM |
5951 | } |
5952 | ||
ee67d69a AM |
5953 | /* Merge backend specific data from an object file to the output |
5954 | object file when linking. */ | |
5955 | ||
5956 | static bfd_boolean | |
5957 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5958 | { | |
5959 | unsigned long iflags, oflags; | |
5960 | ||
5961 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5962 | return TRUE; | |
5963 | ||
5964 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5965 | return TRUE; | |
5966 | ||
5967 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5968 | return FALSE; | |
5969 | ||
5970 | iflags = elf_elfheader (ibfd)->e_flags; | |
5971 | oflags = elf_elfheader (obfd)->e_flags; | |
5972 | ||
f6c7c3e8 | 5973 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a AM |
5974 | { |
5975 | (*_bfd_error_handler) | |
5976 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5977 | bfd_set_error (bfd_error_bad_value); | |
5978 | return FALSE; | |
5979 | } | |
f6c7c3e8 | 5980 | else if (iflags != oflags && iflags != 0) |
ee67d69a AM |
5981 | { |
5982 | (*_bfd_error_handler) | |
5983 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5984 | ibfd, iflags, oflags); | |
5985 | bfd_set_error (bfd_error_bad_value); | |
5986 | return FALSE; | |
5987 | } | |
5988 | ||
5989 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5990 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5991 | ||
5992 | return TRUE; | |
5993 | } | |
5994 | ||
5995 | static bfd_boolean | |
5996 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5997 | { | |
5998 | /* Print normal ELF private data. */ | |
5999 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6000 | ||
6001 | if (elf_elfheader (abfd)->e_flags != 0) | |
6002 | { | |
6003 | FILE *file = ptr; | |
6004 | ||
6005 | /* xgettext:c-format */ | |
6006 | fprintf (file, _("private flags = 0x%lx:"), | |
6007 | elf_elfheader (abfd)->e_flags); | |
6008 | ||
6009 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6010 | fprintf (file, _(" [abiv%ld]"), | |
6011 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6012 | fputc ('\n', file); | |
6013 | } | |
6014 | ||
6015 | return TRUE; | |
6016 | } | |
6017 | ||
8387904d | 6018 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6019 | of the code entry point, and its section, which must be in the same |
6020 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6021 | |
6022 | static bfd_vma | |
6023 | opd_entry_value (asection *opd_sec, | |
6024 | bfd_vma offset, | |
6025 | asection **code_sec, | |
aef36ac1 AM |
6026 | bfd_vma *code_off, |
6027 | bfd_boolean in_code_sec) | |
8387904d AM |
6028 | { |
6029 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6030 | Elf_Internal_Rela *relocs; |
8387904d | 6031 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6032 | bfd_vma val; |
8387904d | 6033 | |
9f296da3 AM |
6034 | /* No relocs implies we are linking a --just-symbols object, or looking |
6035 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6036 | if (opd_sec->reloc_count == 0) |
6037 | { | |
729eabd5 | 6038 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6039 | |
729eabd5 AM |
6040 | if (contents == NULL) |
6041 | { | |
6042 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6043 | return (bfd_vma) -1; | |
6044 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6045 | } | |
ee1e4ede | 6046 | |
dbb3fbbb | 6047 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6048 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6049 | return (bfd_vma) -1; |
6050 | ||
729eabd5 | 6051 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6052 | if (code_sec != NULL) |
6053 | { | |
6054 | asection *sec, *likely = NULL; | |
ee1e4ede | 6055 | |
aef36ac1 | 6056 | if (in_code_sec) |
4b85d634 | 6057 | { |
aef36ac1 AM |
6058 | sec = *code_sec; |
6059 | if (sec->vma <= val | |
6060 | && val < sec->vma + sec->size) | |
6061 | likely = sec; | |
6062 | else | |
6063 | val = -1; | |
6064 | } | |
6065 | else | |
6066 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6067 | if (sec->vma <= val | |
6068 | && (sec->flags & SEC_LOAD) != 0 | |
6069 | && (sec->flags & SEC_ALLOC) != 0) | |
6070 | likely = sec; | |
6071 | if (likely != NULL) | |
6072 | { | |
6073 | *code_sec = likely; | |
6074 | if (code_off != NULL) | |
6075 | *code_off = val - likely->vma; | |
4b85d634 AM |
6076 | } |
6077 | } | |
aef36ac1 | 6078 | return val; |
4b85d634 AM |
6079 | } |
6080 | ||
0c8d6e5c | 6081 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6082 | |
729eabd5 | 6083 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6084 | if (relocs == NULL) |
6085 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6086 | /* PR 17512: file: df8e1fd6. */ |
6087 | if (relocs == NULL) | |
6088 | return (bfd_vma) -1; | |
645ea6a9 | 6089 | |
8387904d | 6090 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6091 | lo = relocs; |
8387904d | 6092 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6093 | val = (bfd_vma) -1; |
8387904d AM |
6094 | while (lo < hi) |
6095 | { | |
6096 | look = lo + (hi - lo) / 2; | |
6097 | if (look->r_offset < offset) | |
6098 | lo = look + 1; | |
6099 | else if (look->r_offset > offset) | |
6100 | hi = look; | |
6101 | else | |
6102 | { | |
0ffa91dd NC |
6103 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6104 | ||
8387904d AM |
6105 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6106 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6107 | { | |
6108 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6109 | asection *sec = NULL; |
8387904d | 6110 | |
b53dfeb2 AM |
6111 | if (symndx >= symtab_hdr->sh_info |
6112 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6113 | { |
6114 | struct elf_link_hash_entry **sym_hashes; | |
6115 | struct elf_link_hash_entry *rh; | |
6116 | ||
6117 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6118 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6119 | if (rh != NULL) |
6120 | { | |
6121 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6122 | if (rh->root.type != bfd_link_hash_defined |
6123 | && rh->root.type != bfd_link_hash_defweak) | |
6124 | break; | |
6125 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6126 | { |
bb854a36 AM |
6127 | val = rh->root.u.def.value; |
6128 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6129 | } |
6130 | } | |
6131 | } | |
6132 | ||
6133 | if (sec == NULL) | |
6134 | { | |
6135 | Elf_Internal_Sym *sym; | |
6136 | ||
6137 | if (symndx < symtab_hdr->sh_info) | |
6138 | { | |
6139 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6140 | if (sym == NULL) | |
6141 | { | |
6142 | size_t symcnt = symtab_hdr->sh_info; | |
6143 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6144 | symcnt, 0, | |
6145 | NULL, NULL, NULL); | |
6146 | if (sym == NULL) | |
6147 | break; | |
6148 | symtab_hdr->contents = (bfd_byte *) sym; | |
6149 | } | |
6150 | sym += symndx; | |
128205bb AM |
6151 | } |
6152 | else | |
6153 | { | |
b53dfeb2 AM |
6154 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6155 | 1, symndx, | |
6156 | NULL, NULL, NULL); | |
128205bb AM |
6157 | if (sym == NULL) |
6158 | break; | |
128205bb | 6159 | } |
b53dfeb2 AM |
6160 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6161 | if (sec == NULL) | |
6162 | break; | |
6163 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6164 | val = sym->st_value; | |
8387904d | 6165 | } |
b53dfeb2 | 6166 | |
8387904d AM |
6167 | val += look->r_addend; |
6168 | if (code_off != NULL) | |
6169 | *code_off = val; | |
6170 | if (code_sec != NULL) | |
aef36ac1 AM |
6171 | { |
6172 | if (in_code_sec && *code_sec != sec) | |
6173 | return -1; | |
6174 | else | |
6175 | *code_sec = sec; | |
6176 | } | |
b53dfeb2 | 6177 | if (sec->output_section != NULL) |
8387904d | 6178 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6179 | } |
6180 | break; | |
6181 | } | |
6182 | } | |
645ea6a9 | 6183 | |
645ea6a9 | 6184 | return val; |
8387904d AM |
6185 | } |
6186 | ||
aef36ac1 AM |
6187 | /* If the ELF symbol SYM might be a function in SEC, return the |
6188 | function size and set *CODE_OFF to the function's entry point, | |
6189 | otherwise return zero. */ | |
9f296da3 | 6190 | |
aef36ac1 AM |
6191 | static bfd_size_type |
6192 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6193 | bfd_vma *code_off) | |
9f296da3 | 6194 | { |
aef36ac1 AM |
6195 | bfd_size_type size; |
6196 | ||
6197 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6198 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6199 | return 0; | |
6200 | ||
6201 | size = 0; | |
6202 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6203 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6204 | ||
6205 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6206 | { |
b07bca4e AM |
6207 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6208 | bfd_vma symval = sym->value; | |
6209 | ||
6210 | if (opd != NULL | |
6211 | && opd->adjust != NULL | |
6212 | && elf_section_data (sym->section)->relocs != NULL) | |
6213 | { | |
6214 | /* opd_entry_value will use cached relocs that have been | |
6215 | adjusted, but with raw symbols. That means both local | |
6216 | and global symbols need adjusting. */ | |
6217 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6218 | if (adjust == -1) | |
6219 | return 0; | |
6220 | symval += adjust; | |
6221 | } | |
6222 | ||
6223 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6224 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6225 | return 0; | |
6226 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6227 | symbol. This size has nothing to do with the code size of the | |
6228 | function, which is what we're supposed to return, but the | |
6229 | code size isn't available without looking up the dot-sym. | |
6230 | However, doing that would be a waste of time particularly | |
6231 | since elf_find_function will look at the dot-sym anyway. | |
6232 | Now, elf_find_function will keep the largest size of any | |
6233 | function sym found at the code address of interest, so return | |
6234 | 1 here to avoid it incorrectly caching a larger function size | |
6235 | for a small function. This does mean we return the wrong | |
6236 | size for a new-ABI function of size 24, but all that does is | |
6237 | disable caching for such functions. */ | |
6238 | if (size == 24) | |
6239 | size = 1; | |
9f296da3 | 6240 | } |
aef36ac1 AM |
6241 | else |
6242 | { | |
6243 | if (sym->section != sec) | |
6244 | return 0; | |
6245 | *code_off = sym->value; | |
6246 | } | |
6247 | if (size == 0) | |
6248 | size = 1; | |
6249 | return size; | |
9f296da3 AM |
6250 | } |
6251 | ||
854b41e7 AM |
6252 | /* Return true if symbol is defined in a regular object file. */ |
6253 | ||
6254 | static bfd_boolean | |
6255 | is_static_defined (struct elf_link_hash_entry *h) | |
6256 | { | |
6257 | return ((h->root.type == bfd_link_hash_defined | |
6258 | || h->root.type == bfd_link_hash_defweak) | |
6259 | && h->root.u.def.section != NULL | |
6260 | && h->root.u.def.section->output_section != NULL); | |
6261 | } | |
6262 | ||
b31867b6 AM |
6263 | /* If FDH is a function descriptor symbol, return the associated code |
6264 | entry symbol if it is defined. Return NULL otherwise. */ | |
6265 | ||
6266 | static struct ppc_link_hash_entry * | |
6267 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6268 | { | |
6269 | if (fdh->is_func_descriptor) | |
6270 | { | |
6271 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6272 | if (fh->elf.root.type == bfd_link_hash_defined | |
6273 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6274 | return fh; | |
6275 | } | |
6276 | return NULL; | |
6277 | } | |
6278 | ||
6279 | /* If FH is a function code entry symbol, return the associated | |
6280 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6281 | ||
6282 | static struct ppc_link_hash_entry * | |
6283 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6284 | { | |
6285 | if (fh->oh != NULL | |
6286 | && fh->oh->is_func_descriptor) | |
6287 | { | |
6288 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6289 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6290 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6291 | return fdh; | |
6292 | } | |
6293 | return NULL; | |
6294 | } | |
6295 | ||
74f0fb50 AM |
6296 | /* Mark all our entry sym sections, both opd and code section. */ |
6297 | ||
6298 | static void | |
6299 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6300 | { | |
6301 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6302 | struct bfd_sym_chain *sym; | |
6303 | ||
4dfe6ac6 NC |
6304 | if (htab == NULL) |
6305 | return; | |
6306 | ||
74f0fb50 AM |
6307 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6308 | { | |
b31867b6 | 6309 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6310 | asection *sec; |
6311 | ||
6312 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6313 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6314 | if (eh == NULL) |
6315 | continue; | |
6316 | if (eh->elf.root.type != bfd_link_hash_defined | |
6317 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6318 | continue; | |
6319 | ||
b31867b6 AM |
6320 | fh = defined_code_entry (eh); |
6321 | if (fh != NULL) | |
74f0fb50 | 6322 | { |
b31867b6 | 6323 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6324 | sec->flags |= SEC_KEEP; |
6325 | } | |
6326 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6327 | && opd_entry_value (eh->elf.root.u.def.section, | |
6328 | eh->elf.root.u.def.value, | |
aef36ac1 | 6329 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6330 | sec->flags |= SEC_KEEP; |
6331 | ||
6332 | sec = eh->elf.root.u.def.section; | |
6333 | sec->flags |= SEC_KEEP; | |
6334 | } | |
6335 | } | |
6336 | ||
64d03ab5 AM |
6337 | /* Mark sections containing dynamically referenced symbols. When |
6338 | building shared libraries, we must assume that any visible symbol is | |
6339 | referenced. */ | |
6340 | ||
6341 | static bfd_boolean | |
6342 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6343 | { | |
6344 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6345 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6346 | struct ppc_link_hash_entry *fdh; |
b407645f | 6347 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6348 | |
64d03ab5 | 6349 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6350 | fdh = defined_func_desc (eh); |
6351 | if (fdh != NULL) | |
6352 | eh = fdh; | |
64d03ab5 AM |
6353 | |
6354 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6355 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6356 | && (eh->elf.ref_dynamic | |
1c9177d9 | 6357 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6358 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6359 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6360 | && (!bfd_link_executable (info) |
b407645f AM |
6361 | || info->export_dynamic |
6362 | || (eh->elf.dynamic | |
6363 | && d != NULL | |
6364 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6365 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6366 | || !bfd_hide_sym_by_version (info->version_info, | |
6367 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6368 | { |
6369 | asection *code_sec; | |
b31867b6 | 6370 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6371 | |
6372 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6373 | ||
6374 | /* Function descriptor syms cause the associated | |
6375 | function code sym section to be marked. */ | |
b31867b6 AM |
6376 | fh = defined_code_entry (eh); |
6377 | if (fh != NULL) | |
6378 | { | |
6379 | code_sec = fh->elf.root.u.def.section; | |
6380 | code_sec->flags |= SEC_KEEP; | |
6381 | } | |
64d03ab5 AM |
6382 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6383 | && opd_entry_value (eh->elf.root.u.def.section, | |
6384 | eh->elf.root.u.def.value, | |
aef36ac1 | 6385 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6386 | code_sec->flags |= SEC_KEEP; |
6387 | } | |
6388 | ||
6389 | return TRUE; | |
6390 | } | |
6391 | ||
5bd4f169 AM |
6392 | /* Return the section that should be marked against GC for a given |
6393 | relocation. */ | |
6394 | ||
6395 | static asection * | |
4ce794b7 | 6396 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6397 | struct bfd_link_info *info, |
4ce794b7 AM |
6398 | Elf_Internal_Rela *rel, |
6399 | struct elf_link_hash_entry *h, | |
6400 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6401 | { |
ccfa59ea AM |
6402 | asection *rsec; |
6403 | ||
ccfa59ea AM |
6404 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6405 | function sections, as all functions are referenced in .opd. */ | |
6406 | rsec = NULL; | |
6407 | if (get_opd_info (sec) != NULL) | |
6408 | return rsec; | |
1e2f5b6e | 6409 | |
5bd4f169 AM |
6410 | if (h != NULL) |
6411 | { | |
04c9666a | 6412 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6413 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6414 | |
4ce794b7 | 6415 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6416 | switch (r_type) |
5bd4f169 AM |
6417 | { |
6418 | case R_PPC64_GNU_VTINHERIT: | |
6419 | case R_PPC64_GNU_VTENTRY: | |
6420 | break; | |
6421 | ||
6422 | default: | |
6423 | switch (h->root.type) | |
6424 | { | |
6425 | case bfd_link_hash_defined: | |
6426 | case bfd_link_hash_defweak: | |
ccfa59ea | 6427 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6428 | fdh = defined_func_desc (eh); |
6429 | if (fdh != NULL) | |
6430 | eh = fdh; | |
1e2f5b6e AM |
6431 | |
6432 | /* Function descriptor syms cause the associated | |
6433 | function code sym section to be marked. */ | |
b31867b6 AM |
6434 | fh = defined_code_entry (eh); |
6435 | if (fh != NULL) | |
ccfa59ea AM |
6436 | { |
6437 | /* They also mark their opd section. */ | |
74f0fb50 | 6438 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6439 | |
b31867b6 | 6440 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6441 | } |
8387904d AM |
6442 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6443 | && opd_entry_value (eh->elf.root.u.def.section, | |
6444 | eh->elf.root.u.def.value, | |
aef36ac1 | 6445 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6446 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6447 | else |
1e2f5b6e AM |
6448 | rsec = h->root.u.def.section; |
6449 | break; | |
5bd4f169 AM |
6450 | |
6451 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6452 | rsec = h->root.u.c.p->section; |
6453 | break; | |
5bd4f169 AM |
6454 | |
6455 | default: | |
fb34365b | 6456 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6457 | } |
6458 | } | |
6459 | } | |
6460 | else | |
6461 | { | |
74f0fb50 | 6462 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6463 | |
6464 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6465 | opd = get_opd_info (rsec); |
6466 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6467 | { |
74f0fb50 | 6468 | rsec->gc_mark = 1; |
ccfa59ea | 6469 | |
51aecdc5 | 6470 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6471 | } |
5bd4f169 AM |
6472 | } |
6473 | ||
1e2f5b6e | 6474 | return rsec; |
5bd4f169 AM |
6475 | } |
6476 | ||
65f38f15 AM |
6477 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6478 | section being removed. */ | |
5bd4f169 | 6479 | |
b34976b6 | 6480 | static bfd_boolean |
4ce794b7 AM |
6481 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6482 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6483 | { |
411e1bfb | 6484 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6485 | Elf_Internal_Shdr *symtab_hdr; |
6486 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6487 | struct got_entry **local_got_ents; |
5bd4f169 | 6488 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6489 | |
0e1862bb | 6490 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
6491 | return TRUE; |
6492 | ||
680a3378 AM |
6493 | if ((sec->flags & SEC_ALLOC) == 0) |
6494 | return TRUE; | |
6495 | ||
ec338859 AM |
6496 | elf_section_data (sec)->local_dynrel = NULL; |
6497 | ||
411e1bfb | 6498 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6499 | if (htab == NULL) |
6500 | return FALSE; | |
6501 | ||
0ffa91dd | 6502 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6503 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6504 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6505 | |
6506 | relend = relocs + sec->reloc_count; | |
6507 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6508 | { |
6509 | unsigned long r_symndx; | |
04c9666a | 6510 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6511 | struct elf_link_hash_entry *h = NULL; |
cbf95972 | 6512 | struct plt_entry **plt_list; |
f961d9dd | 6513 | unsigned char tls_type = 0; |
5bd4f169 | 6514 | |
a33d1f77 | 6515 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6516 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6517 | if (r_symndx >= symtab_hdr->sh_info) |
6518 | { | |
6519 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6520 | struct elf_dyn_relocs **pp; |
6521 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6522 | |
6523 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6524 | h = elf_follow_link (h); |
58ac9f71 AM |
6525 | eh = (struct ppc_link_hash_entry *) h; |
6526 | ||
6527 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6528 | if (p->sec == sec) | |
6529 | { | |
6530 | /* Everything must go for SEC. */ | |
6531 | *pp = p->next; | |
6532 | break; | |
6533 | } | |
6534 | } | |
6535 | ||
a33d1f77 AM |
6536 | switch (r_type) |
6537 | { | |
411e1bfb AM |
6538 | case R_PPC64_GOT_TLSLD16: |
6539 | case R_PPC64_GOT_TLSLD16_LO: | |
6540 | case R_PPC64_GOT_TLSLD16_HI: | |
6541 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6542 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6543 | goto dogot; |
6544 | ||
6545 | case R_PPC64_GOT_TLSGD16: | |
6546 | case R_PPC64_GOT_TLSGD16_LO: | |
6547 | case R_PPC64_GOT_TLSGD16_HI: | |
6548 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6549 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6550 | goto dogot; |
6551 | ||
6552 | case R_PPC64_GOT_TPREL16_DS: | |
6553 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6554 | case R_PPC64_GOT_TPREL16_HI: | |
6555 | case R_PPC64_GOT_TPREL16_HA: | |
6556 | tls_type = TLS_TLS | TLS_TPREL; | |
6557 | goto dogot; | |
6558 | ||
6559 | case R_PPC64_GOT_DTPREL16_DS: | |
6560 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6561 | case R_PPC64_GOT_DTPREL16_HI: | |
6562 | case R_PPC64_GOT_DTPREL16_HA: | |
6563 | tls_type = TLS_TLS | TLS_DTPREL; | |
6564 | goto dogot; | |
6565 | ||
a33d1f77 AM |
6566 | case R_PPC64_GOT16: |
6567 | case R_PPC64_GOT16_DS: | |
6568 | case R_PPC64_GOT16_HA: | |
6569 | case R_PPC64_GOT16_HI: | |
6570 | case R_PPC64_GOT16_LO: | |
6571 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6572 | dogot: |
6573 | { | |
6574 | struct got_entry *ent; | |
6575 | ||
58ac9f71 AM |
6576 | if (h != NULL) |
6577 | ent = h->got.glist; | |
411e1bfb AM |
6578 | else |
6579 | ent = local_got_ents[r_symndx]; | |
6580 | ||
6581 | for (; ent != NULL; ent = ent->next) | |
6582 | if (ent->addend == rel->r_addend | |
e717da7e | 6583 | && ent->owner == abfd |
411e1bfb AM |
6584 | && ent->tls_type == tls_type) |
6585 | break; | |
6586 | if (ent == NULL) | |
6587 | abort (); | |
6588 | if (ent->got.refcount > 0) | |
6589 | ent->got.refcount -= 1; | |
6590 | } | |
a33d1f77 | 6591 | break; |
65f38f15 | 6592 | |
a33d1f77 AM |
6593 | case R_PPC64_PLT16_HA: |
6594 | case R_PPC64_PLT16_HI: | |
6595 | case R_PPC64_PLT16_LO: | |
6596 | case R_PPC64_PLT32: | |
6597 | case R_PPC64_PLT64: | |
721956f4 AM |
6598 | case R_PPC64_REL14: |
6599 | case R_PPC64_REL14_BRNTAKEN: | |
6600 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6601 | case R_PPC64_REL24: |
cbf95972 | 6602 | plt_list = NULL; |
58ac9f71 | 6603 | if (h != NULL) |
cbf95972 AM |
6604 | plt_list = &h->plt.plist; |
6605 | else if (local_got_ents != NULL) | |
6606 | { | |
6607 | struct plt_entry **local_plt = (struct plt_entry **) | |
6608 | (local_got_ents + symtab_hdr->sh_info); | |
6609 | unsigned char *local_got_tls_masks = (unsigned char *) | |
6610 | (local_plt + symtab_hdr->sh_info); | |
6611 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6612 | plt_list = local_plt + r_symndx; | |
6613 | } | |
6614 | if (plt_list) | |
5d1634d7 | 6615 | { |
411e1bfb AM |
6616 | struct plt_entry *ent; |
6617 | ||
cbf95972 | 6618 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
411e1bfb AM |
6619 | if (ent->addend == rel->r_addend) |
6620 | break; | |
7c6c1722 | 6621 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6622 | ent->plt.refcount -= 1; |
5d1634d7 | 6623 | } |
e86ce104 | 6624 | break; |
5d1634d7 | 6625 | |
a33d1f77 AM |
6626 | default: |
6627 | break; | |
6628 | } | |
6629 | } | |
b34976b6 | 6630 | return TRUE; |
5bd4f169 AM |
6631 | } |
6632 | ||
deb0e272 AM |
6633 | /* The maximum size of .sfpr. */ |
6634 | #define SFPR_MAX (218*4) | |
6635 | ||
6636 | struct sfpr_def_parms | |
6637 | { | |
699733f6 AM |
6638 | const char name[12]; |
6639 | unsigned char lo, hi; | |
deb0e272 AM |
6640 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6641 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6642 | }; | |
6643 | ||
a4b6fadd AM |
6644 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6645 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6646 | instead. */ | |
deb0e272 | 6647 | |
4dfe6ac6 | 6648 | static bfd_boolean |
a4b6fadd AM |
6649 | sfpr_define (struct bfd_link_info *info, |
6650 | const struct sfpr_def_parms *parm, | |
6651 | asection *stub_sec) | |
deb0e272 AM |
6652 | { |
6653 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6654 | unsigned int i; | |
6655 | size_t len = strlen (parm->name); | |
6656 | bfd_boolean writing = FALSE; | |
699733f6 | 6657 | char sym[16]; |
deb0e272 | 6658 | |
4dfe6ac6 NC |
6659 | if (htab == NULL) |
6660 | return FALSE; | |
6661 | ||
deb0e272 AM |
6662 | memcpy (sym, parm->name, len); |
6663 | sym[len + 2] = 0; | |
6664 | ||
6665 | for (i = parm->lo; i <= parm->hi; i++) | |
6666 | { | |
a4b6fadd | 6667 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6668 | |
6669 | sym[len + 0] = i / 10 + '0'; | |
6670 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6671 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6672 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6673 | if (stub_sec != NULL) |
deb0e272 | 6674 | { |
a4b6fadd AM |
6675 | if (h != NULL |
6676 | && h->elf.root.type == bfd_link_hash_defined | |
6677 | && h->elf.root.u.def.section == htab->sfpr) | |
6678 | { | |
6679 | struct elf_link_hash_entry *s; | |
6680 | char buf[32]; | |
6681 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6682 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6683 | if (s == NULL) | |
6684 | return FALSE; | |
6685 | if (s->root.type == bfd_link_hash_new | |
6686 | || (s->root.type = bfd_link_hash_defined | |
6687 | && s->root.u.def.section == stub_sec)) | |
6688 | { | |
6689 | s->root.type = bfd_link_hash_defined; | |
6690 | s->root.u.def.section = stub_sec; | |
6691 | s->root.u.def.value = (stub_sec->size | |
6692 | + h->elf.root.u.def.value); | |
6693 | s->ref_regular = 1; | |
6694 | s->def_regular = 1; | |
6695 | s->ref_regular_nonweak = 1; | |
6696 | s->forced_local = 1; | |
6697 | s->non_elf = 0; | |
6698 | s->root.linker_def = 1; | |
6699 | } | |
6700 | } | |
6701 | continue; | |
6702 | } | |
6703 | if (h != NULL) | |
6704 | { | |
6705 | h->save_res = 1; | |
6706 | if (!h->elf.def_regular) | |
deb0e272 | 6707 | { |
a4b6fadd AM |
6708 | h->elf.root.type = bfd_link_hash_defined; |
6709 | h->elf.root.u.def.section = htab->sfpr; | |
6710 | h->elf.root.u.def.value = htab->sfpr->size; | |
6711 | h->elf.type = STT_FUNC; | |
6712 | h->elf.def_regular = 1; | |
b32547cd | 6713 | h->elf.non_elf = 0; |
a4b6fadd AM |
6714 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6715 | writing = TRUE; | |
deb0e272 | 6716 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6717 | { |
6718 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6719 | if (htab->sfpr->contents == NULL) | |
6720 | return FALSE; | |
6721 | } | |
deb0e272 AM |
6722 | } |
6723 | } | |
6724 | if (writing) | |
6725 | { | |
6726 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6727 | if (i != parm->hi) | |
6728 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6729 | else | |
6730 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6731 | htab->sfpr->size = p - htab->sfpr->contents; | |
6732 | } | |
6733 | } | |
6734 | ||
6735 | return TRUE; | |
6736 | } | |
6737 | ||
6738 | static bfd_byte * | |
6739 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6740 | { | |
6741 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6742 | return p + 4; | |
6743 | } | |
6744 | ||
6745 | static bfd_byte * | |
6746 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6747 | { | |
6748 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6749 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6750 | p = p + 4; |
6751 | bfd_put_32 (abfd, BLR, p); | |
6752 | return p + 4; | |
6753 | } | |
6754 | ||
6755 | static bfd_byte * | |
6756 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6757 | { | |
6758 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6759 | return p + 4; | |
6760 | } | |
6761 | ||
6762 | static bfd_byte * | |
6763 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6764 | { | |
a078d95a | 6765 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6766 | p = p + 4; |
6767 | p = restgpr0 (abfd, p, r); | |
6768 | bfd_put_32 (abfd, MTLR_R0, p); | |
6769 | p = p + 4; | |
6770 | if (r == 29) | |
6771 | { | |
6772 | p = restgpr0 (abfd, p, 30); | |
6773 | p = restgpr0 (abfd, p, 31); | |
6774 | } | |
6775 | bfd_put_32 (abfd, BLR, p); | |
6776 | return p + 4; | |
6777 | } | |
6778 | ||
6779 | static bfd_byte * | |
6780 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6781 | { | |
6782 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6783 | return p + 4; | |
6784 | } | |
6785 | ||
6786 | static bfd_byte * | |
6787 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6788 | { | |
6789 | p = savegpr1 (abfd, p, r); | |
6790 | bfd_put_32 (abfd, BLR, p); | |
6791 | return p + 4; | |
6792 | } | |
6793 | ||
6794 | static bfd_byte * | |
6795 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6796 | { | |
6797 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6798 | return p + 4; | |
6799 | } | |
6800 | ||
6801 | static bfd_byte * | |
6802 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6803 | { | |
6804 | p = restgpr1 (abfd, p, r); | |
6805 | bfd_put_32 (abfd, BLR, p); | |
6806 | return p + 4; | |
6807 | } | |
6808 | ||
6809 | static bfd_byte * | |
6810 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6811 | { | |
6812 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6813 | return p + 4; | |
6814 | } | |
6815 | ||
6816 | static bfd_byte * | |
6817 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6818 | { | |
6819 | p = savefpr (abfd, p, r); | |
a078d95a | 6820 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6821 | p = p + 4; |
6822 | bfd_put_32 (abfd, BLR, p); | |
6823 | return p + 4; | |
6824 | } | |
6825 | ||
6826 | static bfd_byte * | |
6827 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6828 | { | |
6829 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6830 | return p + 4; | |
6831 | } | |
6832 | ||
6833 | static bfd_byte * | |
6834 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6835 | { | |
a078d95a | 6836 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6837 | p = p + 4; |
6838 | p = restfpr (abfd, p, r); | |
6839 | bfd_put_32 (abfd, MTLR_R0, p); | |
6840 | p = p + 4; | |
6841 | if (r == 29) | |
6842 | { | |
6843 | p = restfpr (abfd, p, 30); | |
6844 | p = restfpr (abfd, p, 31); | |
6845 | } | |
6846 | bfd_put_32 (abfd, BLR, p); | |
6847 | return p + 4; | |
6848 | } | |
6849 | ||
6850 | static bfd_byte * | |
6851 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6852 | { | |
6853 | p = savefpr (abfd, p, r); | |
6854 | bfd_put_32 (abfd, BLR, p); | |
6855 | return p + 4; | |
6856 | } | |
6857 | ||
6858 | static bfd_byte * | |
6859 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6860 | { | |
6861 | p = restfpr (abfd, p, r); | |
6862 | bfd_put_32 (abfd, BLR, p); | |
6863 | return p + 4; | |
6864 | } | |
6865 | ||
6866 | static bfd_byte * | |
6867 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6868 | { | |
6869 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6870 | p = p + 4; | |
6871 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6872 | return p + 4; | |
6873 | } | |
6874 | ||
6875 | static bfd_byte * | |
6876 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6877 | { | |
6878 | p = savevr (abfd, p, r); | |
6879 | bfd_put_32 (abfd, BLR, p); | |
6880 | return p + 4; | |
6881 | } | |
6882 | ||
6883 | static bfd_byte * | |
6884 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6885 | { | |
6886 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6887 | p = p + 4; | |
6888 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6889 | return p + 4; | |
6890 | } | |
6891 | ||
6892 | static bfd_byte * | |
6893 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6894 | { | |
6895 | p = restvr (abfd, p, r); | |
6896 | bfd_put_32 (abfd, BLR, p); | |
6897 | return p + 4; | |
6898 | } | |
6899 | ||
e86ce104 AM |
6900 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6901 | information on function code symbol entries to their corresponding | |
6902 | function descriptor symbol entries. */ | |
deb0e272 | 6903 | |
b34976b6 | 6904 | static bfd_boolean |
4ce794b7 | 6905 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6906 | { |
e86ce104 | 6907 | struct bfd_link_info *info; |
65f38f15 | 6908 | struct ppc_link_hash_table *htab; |
411e1bfb | 6909 | struct plt_entry *ent; |
50bc7936 AM |
6910 | struct ppc_link_hash_entry *fh; |
6911 | struct ppc_link_hash_entry *fdh; | |
6912 | bfd_boolean force_local; | |
5bd4f169 | 6913 | |
50bc7936 AM |
6914 | fh = (struct ppc_link_hash_entry *) h; |
6915 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6916 | return TRUE; |
e86ce104 | 6917 | |
4ce794b7 | 6918 | info = inf; |
65f38f15 | 6919 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6920 | if (htab == NULL) |
6921 | return FALSE; | |
5bd4f169 | 6922 | |
c09bdfe5 AM |
6923 | /* Resolve undefined references to dot-symbols as the value |
6924 | in the function descriptor, if we have one in a regular object. | |
6925 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6926 | in dynamic objects are handled elsewhere. */ | |
6927 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6928 | && fh->was_undefined | |
b31867b6 AM |
6929 | && (fdh = defined_func_desc (fh)) != NULL |
6930 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6931 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6932 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6933 | &fh->elf.root.u.def.section, |
aef36ac1 | 6934 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6935 | { |
b31867b6 | 6936 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6937 | fh->elf.forced_local = 1; |
b31867b6 AM |
6938 | fh->elf.def_regular = fdh->elf.def_regular; |
6939 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6940 | } |
6941 | ||
e86ce104 AM |
6942 | /* If this is a function code symbol, transfer dynamic linking |
6943 | information to the function descriptor symbol. */ | |
50bc7936 | 6944 | if (!fh->is_func) |
b34976b6 | 6945 | return TRUE; |
e86ce104 | 6946 | |
50bc7936 | 6947 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6948 | if (ent->plt.refcount > 0) |
6949 | break; | |
50bc7936 AM |
6950 | if (ent == NULL |
6951 | || fh->elf.root.root.string[0] != '.' | |
6952 | || fh->elf.root.root.string[1] == '\0') | |
6953 | return TRUE; | |
5bd4f169 | 6954 | |
50bc7936 AM |
6955 | /* Find the corresponding function descriptor symbol. Create it |
6956 | as undefined if necessary. */ | |
5bd4f169 | 6957 | |
b31867b6 | 6958 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6959 | if (fdh == NULL |
0e1862bb | 6960 | && !bfd_link_executable (info) |
50bc7936 AM |
6961 | && (fh->elf.root.type == bfd_link_hash_undefined |
6962 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6963 | { | |
908b32fc | 6964 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6965 | if (fdh == NULL) |
6966 | return FALSE; | |
50bc7936 | 6967 | } |
648cca2c | 6968 | |
908b32fc | 6969 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6970 | code symbol is strong undefined, make the fake sym the same. |
6971 | If the function code symbol is defined, then force the fake | |
6972 | descriptor local; We can't support overriding of symbols in a | |
6973 | shared library on a fake descriptor. */ | |
908b32fc AM |
6974 | |
6975 | if (fdh != NULL | |
6976 | && fdh->fake | |
433817dd | 6977 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6978 | { |
433817dd AM |
6979 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6980 | { | |
6981 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6982 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6983 | } | |
6984 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6985 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6986 | { | |
6987 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6988 | } | |
908b32fc AM |
6989 | } |
6990 | ||
50bc7936 | 6991 | if (fdh != NULL |
f5385ebf | 6992 | && !fdh->elf.forced_local |
0e1862bb | 6993 | && (!bfd_link_executable (info) |
f5385ebf AM |
6994 | || fdh->elf.def_dynamic |
6995 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6996 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6997 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6998 | { | |
6999 | if (fdh->elf.dynindx == -1) | |
c152c796 | 7000 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 7001 | return FALSE; |
f5385ebf AM |
7002 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7003 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7004 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7005 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 7006 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 7007 | { |
40d16e0b | 7008 | move_plt_plist (fh, fdh); |
f5385ebf | 7009 | fdh->elf.needs_plt = 1; |
e86ce104 | 7010 | } |
50bc7936 | 7011 | fdh->is_func_descriptor = 1; |
34814b9f AM |
7012 | fdh->oh = fh; |
7013 | fh->oh = fdh; | |
e86ce104 AM |
7014 | } |
7015 | ||
50bc7936 AM |
7016 | /* Now that the info is on the function descriptor, clear the |
7017 | function code sym info. Any function code syms for which we | |
7018 | don't have a definition in a regular file, we force local. | |
7019 | This prevents a shared library from exporting syms that have | |
7020 | been imported from another library. Function code syms that | |
7021 | are really in the library we must leave global to prevent the | |
7022 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7023 | force_local = (!fh->elf.def_regular |
7024 | || fdh == NULL | |
7025 | || !fdh->elf.def_regular | |
7026 | || fdh->elf.forced_local); | |
50bc7936 AM |
7027 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7028 | ||
b34976b6 | 7029 | return TRUE; |
e86ce104 | 7030 | } |
40b8271b | 7031 | |
a4b6fadd AM |
7032 | static const struct sfpr_def_parms save_res_funcs[] = |
7033 | { | |
7034 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7035 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7036 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7037 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7038 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7039 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7040 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7041 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7042 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7043 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7044 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7045 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7046 | }; | |
7047 | ||
e86ce104 | 7048 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7049 | this hook to a) provide some gcc support functions, and b) transfer |
7050 | dynamic linking information gathered so far on function code symbol | |
7051 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7052 | |
b34976b6 | 7053 | static bfd_boolean |
4ce794b7 AM |
7054 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7055 | struct bfd_link_info *info) | |
e86ce104 AM |
7056 | { |
7057 | struct ppc_link_hash_table *htab; | |
7058 | ||
7059 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7060 | if (htab == NULL) |
7061 | return FALSE; | |
7062 | ||
b32547cd AM |
7063 | /* Provide any missing _save* and _rest* functions. */ |
7064 | if (htab->sfpr != NULL) | |
7065 | { | |
7066 | unsigned int i; | |
7067 | ||
7068 | htab->sfpr->size = 0; | |
7069 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7070 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7071 | return FALSE; | |
7072 | if (htab->sfpr->size == 0) | |
7073 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7074 | } | |
7075 | ||
7076 | if (bfd_link_relocatable (info)) | |
7077 | return TRUE; | |
7078 | ||
7079 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7080 | { |
7081 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7082 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7083 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7084 | if (!htab->elf.hgot->def_regular |
7085 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7086 | { | |
7087 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7088 | htab->elf.hgot->root.u.def.value = 0; | |
7089 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7090 | htab->elf.hgot->def_regular = 1; | |
7091 | htab->elf.hgot->root.linker_def = 1; | |
7092 | } | |
dba6fa9b | 7093 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7094 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7095 | | STV_HIDDEN); | |
7096 | } | |
c66bb0ee | 7097 | |
4ce794b7 | 7098 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 7099 | |
b34976b6 | 7100 | return TRUE; |
e86ce104 AM |
7101 | } |
7102 | ||
a345bc8d AM |
7103 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
7104 | ||
7105 | static bfd_boolean | |
7106 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7107 | { | |
7108 | struct ppc_link_hash_entry *eh; | |
7109 | struct elf_dyn_relocs *p; | |
7110 | ||
7111 | eh = (struct ppc_link_hash_entry *) h; | |
7112 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7113 | { | |
7114 | asection *s = p->sec->output_section; | |
7115 | ||
7116 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7117 | return TRUE; | |
7118 | } | |
7119 | return FALSE; | |
7120 | } | |
7121 | ||
e86ce104 AM |
7122 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7123 | regular object. The current definition is in some section of the | |
7124 | dynamic object, but we're not including those sections. We have to | |
7125 | change the definition to something the rest of the link can | |
7126 | understand. */ | |
7127 | ||
b34976b6 | 7128 | static bfd_boolean |
4ce794b7 AM |
7129 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7130 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7131 | { |
7132 | struct ppc_link_hash_table *htab; | |
e86ce104 | 7133 | asection *s; |
e86ce104 AM |
7134 | |
7135 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7136 | if (htab == NULL) |
7137 | return FALSE; | |
e86ce104 AM |
7138 | |
7139 | /* Deal with function syms. */ | |
7140 | if (h->type == STT_FUNC | |
e054468f | 7141 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7142 | || h->needs_plt) |
e86ce104 AM |
7143 | { |
7144 | /* Clear procedure linkage table information for any symbol that | |
7145 | won't need a .plt entry. */ | |
411e1bfb AM |
7146 | struct plt_entry *ent; |
7147 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7148 | if (ent->plt.refcount > 0) | |
7149 | break; | |
8387904d | 7150 | if (ent == NULL |
e054468f AM |
7151 | || (h->type != STT_GNU_IFUNC |
7152 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7153 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
a4b6fadd AM |
7154 | && h->root.type == bfd_link_hash_undefweak))) |
7155 | || ((struct ppc_link_hash_entry *) h)->save_res) | |
40b8271b | 7156 | { |
411e1bfb | 7157 | h->plt.plist = NULL; |
f5385ebf | 7158 | h->needs_plt = 0; |
d1eca1e4 | 7159 | h->pointer_equality_needed = 0; |
40b8271b | 7160 | } |
a345bc8d AM |
7161 | else if (abiversion (info->output_bfd) == 2) |
7162 | { | |
d1eca1e4 AM |
7163 | /* Taking a function's address in a read/write section |
7164 | doesn't require us to define the function symbol in the | |
7165 | executable on a global entry stub. A dynamic reloc can | |
7166 | be used instead. */ | |
7167 | if (h->pointer_equality_needed | |
1009ef28 | 7168 | && h->type != STT_GNU_IFUNC |
d1eca1e4 AM |
7169 | && !readonly_dynrelocs (h)) |
7170 | { | |
7171 | h->pointer_equality_needed = 0; | |
7172 | h->non_got_ref = 0; | |
7173 | } | |
7174 | ||
a345bc8d AM |
7175 | /* After adjust_dynamic_symbol, non_got_ref set in the |
7176 | non-shared case means that we have allocated space in | |
7177 | .dynbss for the symbol and thus dyn_relocs for this | |
7178 | symbol should be discarded. | |
7179 | If we get here we know we are making a PLT entry for this | |
7180 | symbol, and in an executable we'd normally resolve | |
7181 | relocations against this symbol to the PLT entry. Allow | |
7182 | dynamic relocs if the reference is weak, and the dynamic | |
7183 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
7184 | else if (!h->ref_regular_nonweak |
7185 | && h->non_got_ref | |
7186 | && h->type != STT_GNU_IFUNC | |
7187 | && !readonly_dynrelocs (h)) | |
a345bc8d AM |
7188 | h->non_got_ref = 0; |
7189 | ||
7190 | /* If making a plt entry, then we don't need copy relocs. */ | |
7191 | return TRUE; | |
7192 | } | |
5bd4f169 | 7193 | } |
bbd7ec4a | 7194 | else |
411e1bfb | 7195 | h->plt.plist = NULL; |
5bd4f169 AM |
7196 | |
7197 | /* If this is a weak symbol, and there is a real definition, the | |
7198 | processor independent code will have arranged for us to see the | |
7199 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7200 | if (h->u.weakdef != NULL) |
5bd4f169 | 7201 | { |
f6e332e6 AM |
7202 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7203 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7204 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7205 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 7206 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 7207 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 7208 | return TRUE; |
5bd4f169 AM |
7209 | } |
7210 | ||
5bd4f169 AM |
7211 | /* If we are creating a shared library, we must presume that the |
7212 | only references to the symbol are via the global offset table. | |
7213 | For such cases we need not do anything here; the relocations will | |
7214 | be handled correctly by relocate_section. */ | |
0e1862bb | 7215 | if (bfd_link_pic (info)) |
b34976b6 | 7216 | return TRUE; |
5bd4f169 | 7217 | |
65f38f15 AM |
7218 | /* If there are no references to this symbol that do not use the |
7219 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7220 | if (!h->non_got_ref) |
b34976b6 | 7221 | return TRUE; |
65f38f15 | 7222 | |
b186458a JJ |
7223 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
7224 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
7225 | return TRUE; | |
7226 | ||
a127494f AM |
7227 | /* If -z nocopyreloc was given, don't generate them either. */ |
7228 | if (info->nocopyreloc) | |
7229 | { | |
7230 | h->non_got_ref = 0; | |
7231 | return TRUE; | |
7232 | } | |
7233 | ||
a345bc8d AM |
7234 | /* If we didn't find any dynamic relocs in read-only sections, then |
7235 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
7236 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 7237 | { |
a345bc8d AM |
7238 | h->non_got_ref = 0; |
7239 | return TRUE; | |
65f38f15 AM |
7240 | } |
7241 | ||
a127494f AM |
7242 | /* Protected variables do not work with .dynbss. The copy in |
7243 | .dynbss won't be used by the shared library with the protected | |
7244 | definition for the variable. Text relocations are preferable | |
7245 | to an incorrect program. */ | |
7246 | if (h->protected_def) | |
7247 | { | |
7248 | h->non_got_ref = 0; | |
7249 | return TRUE; | |
7250 | } | |
7251 | ||
5d35169e | 7252 | if (h->plt.plist != NULL) |
97b639ba AM |
7253 | { |
7254 | /* We should never get here, but unfortunately there are versions | |
7255 | of gcc out there that improperly (for this ABI) put initialized | |
7256 | function pointers, vtable refs and suchlike in read-only | |
7257 | sections. Allow them to proceed, but warn that this might | |
7258 | break at runtime. */ | |
25f53a85 | 7259 | info->callbacks->einfo |
bc30df16 | 7260 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7261 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7262 | h->root.root.string); |
7263 | } | |
5d35169e AM |
7264 | |
7265 | /* This is a reference to a symbol defined by a dynamic object which | |
7266 | is not a function. */ | |
7267 | ||
5bd4f169 AM |
7268 | /* We must allocate the symbol in our .dynbss section, which will |
7269 | become part of the .bss section of the executable. There will be | |
7270 | an entry for this symbol in the .dynsym section. The dynamic | |
7271 | object will contain position independent code, so all references | |
7272 | from the dynamic object to this symbol will go through the global | |
7273 | offset table. The dynamic linker will use the .dynsym entry to | |
7274 | determine the address it must put in the global offset table, so | |
7275 | both the dynamic object and the regular object will refer to the | |
7276 | same memory location for the variable. */ | |
5bd4f169 | 7277 | |
04c9666a AM |
7278 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7279 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7280 | runtime process image. We need to remember the offset into the |
7281 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7282 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7283 | { |
eea6121a | 7284 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7285 | h->needs_copy = 1; |
5bd4f169 AM |
7286 | } |
7287 | ||
4ce794b7 | 7288 | s = htab->dynbss; |
5bd4f169 | 7289 | |
6cabe1ea | 7290 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7291 | } |
7292 | ||
e86ce104 AM |
7293 | /* If given a function descriptor symbol, hide both the function code |
7294 | sym and the descriptor. */ | |
7295 | static void | |
4ce794b7 AM |
7296 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7297 | struct elf_link_hash_entry *h, | |
7298 | bfd_boolean force_local) | |
e86ce104 | 7299 | { |
34814b9f | 7300 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7301 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7302 | ||
34814b9f AM |
7303 | eh = (struct ppc_link_hash_entry *) h; |
7304 | if (eh->is_func_descriptor) | |
e86ce104 | 7305 | { |
34814b9f | 7306 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7307 | |
721956f4 | 7308 | if (fh == NULL) |
d1329ca3 AM |
7309 | { |
7310 | const char *p, *q; | |
7311 | struct ppc_link_hash_table *htab; | |
7312 | char save; | |
7313 | ||
7314 | /* We aren't supposed to use alloca in BFD because on | |
7315 | systems which do not have alloca the version in libiberty | |
7316 | calls xmalloc, which might cause the program to crash | |
7317 | when it runs out of memory. This function doesn't have a | |
7318 | return status, so there's no way to gracefully return an | |
7319 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7320 | accessed; It's either a string in an ELF string table, |
7321 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7322 | |
34814b9f | 7323 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7324 | save = *p; |
7325 | *(char *) p = '.'; | |
7326 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7327 | if (htab == NULL) |
7328 | return; | |
7329 | ||
34814b9f AM |
7330 | fh = (struct ppc_link_hash_entry *) |
7331 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7332 | *(char *) p = save; |
7333 | ||
7334 | /* Unfortunately, if it so happens that the string we were | |
7335 | looking for was allocated immediately before this string, | |
7336 | then we overwrote the string terminator. That's the only | |
7337 | reason the lookup should fail. */ | |
7338 | if (fh == NULL) | |
7339 | { | |
34814b9f AM |
7340 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7341 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7342 | --q, --p; |
34814b9f AM |
7343 | if (q < eh->elf.root.root.string && *p == '.') |
7344 | fh = (struct ppc_link_hash_entry *) | |
7345 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7346 | } |
7347 | if (fh != NULL) | |
7348 | { | |
34814b9f AM |
7349 | eh->oh = fh; |
7350 | fh->oh = eh; | |
d1329ca3 AM |
7351 | } |
7352 | } | |
e86ce104 | 7353 | if (fh != NULL) |
34814b9f | 7354 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7355 | } |
7356 | } | |
7357 | ||
411e1bfb | 7358 | static bfd_boolean |
8843416a AM |
7359 | get_sym_h (struct elf_link_hash_entry **hp, |
7360 | Elf_Internal_Sym **symp, | |
7361 | asection **symsecp, | |
f961d9dd | 7362 | unsigned char **tls_maskp, |
8843416a AM |
7363 | Elf_Internal_Sym **locsymsp, |
7364 | unsigned long r_symndx, | |
7365 | bfd *ibfd) | |
411e1bfb | 7366 | { |
0ffa91dd | 7367 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7368 | |
7369 | if (r_symndx >= symtab_hdr->sh_info) | |
7370 | { | |
7371 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7372 | struct elf_link_hash_entry *h; | |
7373 | ||
7374 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7375 | h = elf_follow_link (h); |
411e1bfb AM |
7376 | |
7377 | if (hp != NULL) | |
7378 | *hp = h; | |
7379 | ||
7380 | if (symp != NULL) | |
7381 | *symp = NULL; | |
7382 | ||
7383 | if (symsecp != NULL) | |
7384 | { | |
7385 | asection *symsec = NULL; | |
7386 | if (h->root.type == bfd_link_hash_defined | |
7387 | || h->root.type == bfd_link_hash_defweak) | |
7388 | symsec = h->root.u.def.section; | |
7389 | *symsecp = symsec; | |
7390 | } | |
7391 | ||
e7b938ca | 7392 | if (tls_maskp != NULL) |
411e1bfb AM |
7393 | { |
7394 | struct ppc_link_hash_entry *eh; | |
7395 | ||
7396 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7397 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7398 | } |
7399 | } | |
7400 | else | |
7401 | { | |
7402 | Elf_Internal_Sym *sym; | |
7403 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7404 | ||
7405 | if (locsyms == NULL) | |
7406 | { | |
7407 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7408 | if (locsyms == NULL) | |
7409 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7410 | symtab_hdr->sh_info, | |
7411 | 0, NULL, NULL, NULL); | |
7412 | if (locsyms == NULL) | |
7413 | return FALSE; | |
7414 | *locsymsp = locsyms; | |
7415 | } | |
7416 | sym = locsyms + r_symndx; | |
7417 | ||
7418 | if (hp != NULL) | |
7419 | *hp = NULL; | |
7420 | ||
7421 | if (symp != NULL) | |
7422 | *symp = sym; | |
7423 | ||
7424 | if (symsecp != NULL) | |
cb33740c | 7425 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7426 | |
e7b938ca | 7427 | if (tls_maskp != NULL) |
411e1bfb AM |
7428 | { |
7429 | struct got_entry **lgot_ents; | |
f961d9dd | 7430 | unsigned char *tls_mask; |
411e1bfb | 7431 | |
e7b938ca | 7432 | tls_mask = NULL; |
411e1bfb AM |
7433 | lgot_ents = elf_local_got_ents (ibfd); |
7434 | if (lgot_ents != NULL) | |
7435 | { | |
e054468f AM |
7436 | struct plt_entry **local_plt = (struct plt_entry **) |
7437 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7438 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7439 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7440 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7441 | } |
e7b938ca | 7442 | *tls_maskp = tls_mask; |
411e1bfb AM |
7443 | } |
7444 | } | |
7445 | return TRUE; | |
7446 | } | |
7447 | ||
e7b938ca | 7448 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7449 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7450 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7451 | |
7452 | static int | |
f961d9dd | 7453 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7454 | unsigned long *toc_symndx, |
7455 | bfd_vma *toc_addend, | |
0d4792f7 | 7456 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7457 | const Elf_Internal_Rela *rel, |
7458 | bfd *ibfd) | |
411e1bfb AM |
7459 | { |
7460 | unsigned long r_symndx; | |
0d4792f7 | 7461 | int next_r; |
411e1bfb AM |
7462 | struct elf_link_hash_entry *h; |
7463 | Elf_Internal_Sym *sym; | |
7464 | asection *sec; | |
7465 | bfd_vma off; | |
7466 | ||
7467 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7468 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7469 | return 0; |
411e1bfb | 7470 | |
e7b938ca | 7471 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7472 | || sec == NULL |
6bee8834 | 7473 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7474 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7475 | return 1; |
411e1bfb AM |
7476 | |
7477 | /* Look inside a TOC section too. */ | |
7478 | if (h != NULL) | |
7479 | { | |
7480 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7481 | off = h->root.u.def.value; | |
7482 | } | |
7483 | else | |
7484 | off = sym->st_value; | |
7485 | off += rel->r_addend; | |
7486 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7487 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7488 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7489 | if (toc_symndx != NULL) |
7490 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7491 | if (toc_addend != NULL) |
7492 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7493 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7494 | return 0; | |
854b41e7 | 7495 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7496 | && (next_r == -1 || next_r == -2)) |
7497 | return 1 - next_r; | |
951fd09b | 7498 | return 1; |
411e1bfb AM |
7499 | } |
7500 | ||
3b421ab3 AM |
7501 | /* Find (or create) an entry in the tocsave hash table. */ |
7502 | ||
7503 | static struct tocsave_entry * | |
7504 | tocsave_find (struct ppc_link_hash_table *htab, | |
7505 | enum insert_option insert, | |
7506 | Elf_Internal_Sym **local_syms, | |
7507 | const Elf_Internal_Rela *irela, | |
7508 | bfd *ibfd) | |
7509 | { | |
7510 | unsigned long r_indx; | |
7511 | struct elf_link_hash_entry *h; | |
7512 | Elf_Internal_Sym *sym; | |
7513 | struct tocsave_entry ent, *p; | |
7514 | hashval_t hash; | |
7515 | struct tocsave_entry **slot; | |
7516 | ||
7517 | r_indx = ELF64_R_SYM (irela->r_info); | |
7518 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7519 | return NULL; | |
7520 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7521 | { | |
7522 | (*_bfd_error_handler) | |
7523 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7524 | return NULL; | |
7525 | } | |
7526 | ||
7527 | if (h != NULL) | |
7528 | ent.offset = h->root.u.def.value; | |
7529 | else | |
7530 | ent.offset = sym->st_value; | |
7531 | ent.offset += irela->r_addend; | |
7532 | ||
7533 | hash = tocsave_htab_hash (&ent); | |
7534 | slot = ((struct tocsave_entry **) | |
7535 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7536 | if (slot == NULL) | |
7537 | return NULL; | |
7538 | ||
7539 | if (*slot == NULL) | |
7540 | { | |
7541 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7542 | if (p == NULL) | |
7543 | return NULL; | |
7544 | *p = ent; | |
7545 | *slot = p; | |
7546 | } | |
7547 | return *slot; | |
7548 | } | |
7549 | ||
754021d0 | 7550 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7551 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7552 | |
7553 | static bfd_boolean | |
7554 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7555 | { | |
7556 | struct ppc_link_hash_entry *eh; | |
7557 | asection *sym_sec; | |
74f0fb50 | 7558 | struct _opd_sec_data *opd; |
754021d0 AM |
7559 | |
7560 | if (h->root.type == bfd_link_hash_indirect) | |
7561 | return TRUE; | |
7562 | ||
754021d0 AM |
7563 | if (h->root.type != bfd_link_hash_defined |
7564 | && h->root.type != bfd_link_hash_defweak) | |
7565 | return TRUE; | |
7566 | ||
7567 | eh = (struct ppc_link_hash_entry *) h; | |
7568 | if (eh->adjust_done) | |
7569 | return TRUE; | |
7570 | ||
7571 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7572 | opd = get_opd_info (sym_sec); |
7573 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7574 | { |
51aecdc5 | 7575 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7576 | if (adjust == -1) |
7577 | { | |
7578 | /* This entry has been deleted. */ | |
b3fac117 | 7579 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7580 | if (dsec == NULL) |
7581 | { | |
7582 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7583 | if (discarded_section (dsec)) |
81688140 | 7584 | { |
b3fac117 | 7585 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7586 | break; |
7587 | } | |
7588 | } | |
4025353c | 7589 | eh->elf.root.u.def.value = 0; |
81688140 | 7590 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7591 | } |
7592 | else | |
7593 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7594 | eh->adjust_done = 1; |
7595 | } | |
7596 | return TRUE; | |
7597 | } | |
7598 | ||
8c1d1bb8 | 7599 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7600 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7601 | have already been determined. */ |
7602 | ||
7603 | static bfd_boolean | |
7604 | dec_dynrel_count (bfd_vma r_info, | |
7605 | asection *sec, | |
7606 | struct bfd_link_info *info, | |
7607 | Elf_Internal_Sym **local_syms, | |
7608 | struct elf_link_hash_entry *h, | |
19e08130 | 7609 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7610 | { |
7611 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7612 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7613 | |
7614 | /* Can this reloc be dynamic? This switch, and later tests here | |
7615 | should be kept in sync with the code in check_relocs. */ | |
7616 | r_type = ELF64_R_TYPE (r_info); | |
7617 | switch (r_type) | |
7618 | { | |
7619 | default: | |
7620 | return TRUE; | |
7621 | ||
7622 | case R_PPC64_TPREL16: | |
7623 | case R_PPC64_TPREL16_LO: | |
7624 | case R_PPC64_TPREL16_HI: | |
7625 | case R_PPC64_TPREL16_HA: | |
7626 | case R_PPC64_TPREL16_DS: | |
7627 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7628 | case R_PPC64_TPREL16_HIGH: |
7629 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7630 | case R_PPC64_TPREL16_HIGHER: |
7631 | case R_PPC64_TPREL16_HIGHERA: | |
7632 | case R_PPC64_TPREL16_HIGHEST: | |
7633 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 7634 | if (!bfd_link_pic (info)) |
8c1d1bb8 AM |
7635 | return TRUE; |
7636 | ||
7637 | case R_PPC64_TPREL64: | |
7638 | case R_PPC64_DTPMOD64: | |
7639 | case R_PPC64_DTPREL64: | |
7640 | case R_PPC64_ADDR64: | |
7641 | case R_PPC64_REL30: | |
7642 | case R_PPC64_REL32: | |
7643 | case R_PPC64_REL64: | |
7644 | case R_PPC64_ADDR14: | |
7645 | case R_PPC64_ADDR14_BRNTAKEN: | |
7646 | case R_PPC64_ADDR14_BRTAKEN: | |
7647 | case R_PPC64_ADDR16: | |
7648 | case R_PPC64_ADDR16_DS: | |
7649 | case R_PPC64_ADDR16_HA: | |
7650 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7651 | case R_PPC64_ADDR16_HIGH: |
7652 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7653 | case R_PPC64_ADDR16_HIGHER: |
7654 | case R_PPC64_ADDR16_HIGHERA: | |
7655 | case R_PPC64_ADDR16_HIGHEST: | |
7656 | case R_PPC64_ADDR16_HIGHESTA: | |
7657 | case R_PPC64_ADDR16_LO: | |
7658 | case R_PPC64_ADDR16_LO_DS: | |
7659 | case R_PPC64_ADDR24: | |
7660 | case R_PPC64_ADDR32: | |
7661 | case R_PPC64_UADDR16: | |
7662 | case R_PPC64_UADDR32: | |
7663 | case R_PPC64_UADDR64: | |
7664 | case R_PPC64_TOC: | |
7665 | break; | |
7666 | } | |
7667 | ||
7668 | if (local_syms != NULL) | |
7669 | { | |
7670 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7671 | bfd *ibfd = sec->owner; |
7672 | ||
7673 | r_symndx = ELF64_R_SYM (r_info); | |
7674 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7675 | return FALSE; | |
7676 | } | |
7677 | ||
0e1862bb | 7678 | if ((bfd_link_pic (info) |
1d483afe | 7679 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7680 | || (h != NULL |
198f1157 | 7681 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7682 | || h->root.type == bfd_link_hash_defweak |
7683 | || !h->def_regular)))) | |
7684 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7685 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7686 | && h != NULL |
7687 | && (h->root.type == bfd_link_hash_defweak | |
7688 | || !h->def_regular))) | |
7689 | ; | |
7690 | else | |
7691 | return TRUE; | |
7692 | ||
7693 | if (h != NULL) | |
6edfbbad | 7694 | { |
19e08130 AM |
7695 | struct elf_dyn_relocs *p; |
7696 | struct elf_dyn_relocs **pp; | |
7697 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7698 | ||
7699 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7700 | with local syms for a given section. Also, symbol flags are | |
7701 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7702 | report a dynreloc miscount. */ | |
7703 | if (*pp == NULL && info->gc_sections) | |
7704 | return TRUE; | |
7705 | ||
7706 | while ((p = *pp) != NULL) | |
60124e18 | 7707 | { |
19e08130 AM |
7708 | if (p->sec == sec) |
7709 | { | |
7710 | if (!must_be_dyn_reloc (info, r_type)) | |
7711 | p->pc_count -= 1; | |
7712 | p->count -= 1; | |
7713 | if (p->count == 0) | |
7714 | *pp = p->next; | |
7715 | return TRUE; | |
7716 | } | |
7717 | pp = &p->next; | |
60124e18 | 7718 | } |
6edfbbad | 7719 | } |
19e08130 AM |
7720 | else |
7721 | { | |
7722 | struct ppc_dyn_relocs *p; | |
7723 | struct ppc_dyn_relocs **pp; | |
7724 | void *vpp; | |
7725 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7726 | |
19e08130 AM |
7727 | if (local_syms == NULL) |
7728 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7729 | if (sym_sec == NULL) | |
7730 | sym_sec = sec; | |
c57da1a7 | 7731 | |
19e08130 AM |
7732 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7733 | pp = (struct ppc_dyn_relocs **) vpp; | |
7734 | ||
7735 | if (*pp == NULL && info->gc_sections) | |
7736 | return TRUE; | |
7737 | ||
7738 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7739 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7740 | { |
19e08130 AM |
7741 | if (p->sec == sec && p->ifunc == is_ifunc) |
7742 | { | |
7743 | p->count -= 1; | |
7744 | if (p->count == 0) | |
7745 | *pp = p->next; | |
7746 | return TRUE; | |
7747 | } | |
7748 | pp = &p->next; | |
8c1d1bb8 | 7749 | } |
8c1d1bb8 AM |
7750 | } |
7751 | ||
8de848d8 | 7752 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7753 | sec->owner, sec); |
8c1d1bb8 AM |
7754 | bfd_set_error (bfd_error_bad_value); |
7755 | return FALSE; | |
7756 | } | |
7757 | ||
754021d0 AM |
7758 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7759 | only remove those associated with functions in discarded link-once | |
7760 | sections, or weakly defined functions that have been overridden. It | |
7761 | would be possible to remove many more entries for statically linked | |
7762 | applications. */ | |
7763 | ||
b34976b6 | 7764 | bfd_boolean |
e7d1c40c | 7765 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7766 | { |
7767 | bfd *ibfd; | |
754021d0 | 7768 | bfd_boolean some_edited = FALSE; |
3f764659 | 7769 | asection *need_pad = NULL; |
e7d1c40c AM |
7770 | struct ppc_link_hash_table *htab; |
7771 | ||
7772 | htab = ppc_hash_table (info); | |
7773 | if (htab == NULL) | |
7774 | return FALSE; | |
1e2f5b6e | 7775 | |
c72f2fb2 | 7776 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7777 | { |
7778 | asection *sec; | |
7779 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7780 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7781 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7782 | struct _opd_sec_data *opd; |
51aecdc5 | 7783 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7784 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7785 | |
854b41e7 AM |
7786 | if (!is_ppc64_elf (ibfd)) |
7787 | continue; | |
7788 | ||
1e2f5b6e | 7789 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7790 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7791 | continue; |
7792 | ||
dbaa2011 | 7793 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7794 | continue; |
7795 | ||
1e2f5b6e AM |
7796 | if (sec->output_section == bfd_abs_section_ptr) |
7797 | continue; | |
7798 | ||
7799 | /* Look through the section relocs. */ | |
7800 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7801 | continue; | |
7802 | ||
6cdc0ccc | 7803 | local_syms = NULL; |
0ffa91dd | 7804 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7805 | |
7806 | /* Read the relocations. */ | |
4ce794b7 | 7807 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7808 | info->keep_memory); |
1e2f5b6e | 7809 | if (relstart == NULL) |
b34976b6 | 7810 | return FALSE; |
1e2f5b6e AM |
7811 | |
7812 | /* First run through the relocs to check they are sane, and to | |
7813 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7814 | need_edit = FALSE; |
51aecdc5 | 7815 | broken = FALSE; |
3f764659 | 7816 | need_pad = sec; |
1e2f5b6e | 7817 | relend = relstart + sec->reloc_count; |
50bc7936 | 7818 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7819 | { |
04c9666a | 7820 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7821 | unsigned long r_symndx; |
7822 | asection *sym_sec; | |
7823 | struct elf_link_hash_entry *h; | |
7824 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7825 | bfd_vma offset; |
1e2f5b6e | 7826 | |
51aecdc5 | 7827 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7828 | only interested in the reloc pointing to a function entry |
7829 | point. */ | |
51aecdc5 AM |
7830 | offset = rel->r_offset; |
7831 | if (rel + 1 == relend | |
7832 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7833 | { |
7834 | /* If someone messes with .opd alignment then after a | |
7835 | "ld -r" we might have padding in the middle of .opd. | |
7836 | Also, there's nothing to prevent someone putting | |
7837 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7838 | optimization for them! */ |
3f764659 | 7839 | broken_opd: |
1e2f5b6e | 7840 | (*_bfd_error_handler) |
d003868e | 7841 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7842 | broken = TRUE; |
1e2f5b6e AM |
7843 | break; |
7844 | } | |
7845 | ||
50bc7936 AM |
7846 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7847 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7848 | { | |
7849 | (*_bfd_error_handler) | |
d003868e AM |
7850 | (_("%B: unexpected reloc type %u in .opd section"), |
7851 | ibfd, r_type); | |
51aecdc5 | 7852 | broken = TRUE; |
50bc7936 AM |
7853 | break; |
7854 | } | |
7855 | ||
1e2f5b6e | 7856 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7857 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7858 | r_symndx, ibfd)) | |
50bc7936 | 7859 | goto error_ret; |
1e2f5b6e AM |
7860 | |
7861 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7862 | { | |
411e1bfb AM |
7863 | const char *sym_name; |
7864 | if (h != NULL) | |
7865 | sym_name = h->root.root.string; | |
7866 | else | |
26c61ae5 L |
7867 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7868 | sym_sec); | |
411e1bfb | 7869 | |
1e2f5b6e | 7870 | (*_bfd_error_handler) |
d003868e AM |
7871 | (_("%B: undefined sym `%s' in .opd section"), |
7872 | ibfd, sym_name); | |
51aecdc5 | 7873 | broken = TRUE; |
1e2f5b6e AM |
7874 | break; |
7875 | } | |
7876 | ||
51020317 AM |
7877 | /* opd entries are always for functions defined in the |
7878 | current input bfd. If the symbol isn't defined in the | |
7879 | input bfd, then we won't be using the function in this | |
7880 | bfd; It must be defined in a linkonce section in another | |
7881 | bfd, or is weak. It's also possible that we are | |
7882 | discarding the function due to a linker script /DISCARD/, | |
7883 | which we test for via the output_section. */ | |
7884 | if (sym_sec->owner != ibfd | |
7885 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7886 | need_edit = TRUE; |
1e2f5b6e | 7887 | |
50bc7936 | 7888 | rel += 2; |
51aecdc5 AM |
7889 | if (rel + 1 == relend |
7890 | || (rel + 2 < relend | |
7891 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7892 | ++rel; | |
7893 | ||
7894 | if (rel == relend) | |
3f764659 JJ |
7895 | { |
7896 | if (sec->size == offset + 24) | |
7897 | { | |
7898 | need_pad = NULL; | |
7899 | break; | |
7900 | } | |
51aecdc5 | 7901 | if (sec->size == offset + 16) |
3f764659 JJ |
7902 | { |
7903 | cnt_16b++; | |
7904 | break; | |
7905 | } | |
7906 | goto broken_opd; | |
7907 | } | |
3f764659 JJ |
7908 | else if (rel + 1 < relend |
7909 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7910 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7911 | { | |
51aecdc5 AM |
7912 | if (rel[0].r_offset == offset + 16) |
7913 | cnt_16b++; | |
7914 | else if (rel[0].r_offset != offset + 24) | |
7915 | goto broken_opd; | |
3f764659 JJ |
7916 | } |
7917 | else | |
7918 | goto broken_opd; | |
1e2f5b6e AM |
7919 | } |
7920 | ||
e7d1c40c | 7921 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7922 | |
51aecdc5 | 7923 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7924 | { |
7925 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7926 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7927 | bfd_byte *rptr, *wptr; |
983bddc8 | 7928 | bfd_byte *new_contents; |
74f0fb50 AM |
7929 | bfd_size_type amt; |
7930 | ||
983bddc8 | 7931 | new_contents = NULL; |
51aecdc5 | 7932 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7933 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7934 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7935 | if (opd->adjust == NULL) |
7936 | return FALSE; | |
7937 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7938 | |
7939 | /* This seems a waste of time as input .opd sections are all | |
7940 | zeros as generated by gcc, but I suppose there's no reason | |
7941 | this will always be so. We might start putting something in | |
7942 | the third word of .opd entries. */ | |
7943 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7944 | { | |
eea6121a AM |
7945 | bfd_byte *loc; |
7946 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7947 | { |
eea6121a AM |
7948 | if (loc != NULL) |
7949 | free (loc); | |
50bc7936 | 7950 | error_ret: |
6cdc0ccc AM |
7951 | if (local_syms != NULL |
7952 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7953 | free (local_syms); | |
6cdc0ccc AM |
7954 | if (elf_section_data (sec)->relocs != relstart) |
7955 | free (relstart); | |
b34976b6 | 7956 | return FALSE; |
6cdc0ccc | 7957 | } |
1e2f5b6e AM |
7958 | sec->contents = loc; |
7959 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7960 | } | |
7961 | ||
7962 | elf_section_data (sec)->relocs = relstart; | |
7963 | ||
3f764659 | 7964 | new_contents = sec->contents; |
3f764659 JJ |
7965 | if (add_aux_fields) |
7966 | { | |
7967 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7968 | if (new_contents == NULL) | |
7969 | return FALSE; | |
51aecdc5 | 7970 | need_pad = NULL; |
3f764659 | 7971 | } |
b4f4e59f AM |
7972 | wptr = new_contents; |
7973 | rptr = sec->contents; | |
1e2f5b6e | 7974 | write_rel = relstart; |
51aecdc5 | 7975 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7976 | { |
50bc7936 AM |
7977 | unsigned long r_symndx; |
7978 | asection *sym_sec; | |
7979 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7980 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7981 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7982 | long opd_ent_size; |
7983 | Elf_Internal_Rela *next_rel; | |
7984 | bfd_boolean skip; | |
50bc7936 AM |
7985 | |
7986 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7987 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7988 | r_symndx, ibfd)) |
50bc7936 AM |
7989 | goto error_ret; |
7990 | ||
51aecdc5 AM |
7991 | next_rel = rel + 2; |
7992 | if (next_rel + 1 == relend | |
7993 | || (next_rel + 2 < relend | |
7994 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7995 | ++next_rel; | |
7996 | ||
7997 | /* See if the .opd entry is full 24 byte or | |
7998 | 16 byte (with fd_aux entry overlapped with next | |
7999 | fd_func). */ | |
8000 | opd_ent_size = 24; | |
8001 | if (next_rel == relend) | |
1e2f5b6e | 8002 | { |
51aecdc5 | 8003 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8004 | opd_ent_size = 16; |
51aecdc5 AM |
8005 | } |
8006 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8007 | opd_ent_size = 16; | |
3f764659 | 8008 | |
51aecdc5 AM |
8009 | if (h != NULL |
8010 | && h->root.root.string[0] == '.') | |
8011 | { | |
8012 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); | |
8013 | if (fdh != NULL | |
8014 | && fdh->elf.root.type != bfd_link_hash_defined | |
8015 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8016 | fdh = NULL; | |
8017 | } | |
1e2f5b6e | 8018 | |
51aecdc5 AM |
8019 | skip = (sym_sec->owner != ibfd |
8020 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8021 | if (skip) | |
8022 | { | |
8023 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8024 | { |
51aecdc5 AM |
8025 | /* Arrange for the function descriptor sym |
8026 | to be dropped. */ | |
8027 | fdh->elf.root.u.def.value = 0; | |
8028 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8029 | } |
51aecdc5 | 8030 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8031 | |
0e1862bb | 8032 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8033 | rel = next_rel; |
8034 | else | |
8035 | while (1) | |
8036 | { | |
8037 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8038 | NULL, h, sym)) | |
8039 | goto error_ret; | |
754021d0 | 8040 | |
51aecdc5 AM |
8041 | if (++rel == next_rel) |
8042 | break; | |
1e2f5b6e | 8043 | |
51aecdc5 AM |
8044 | r_symndx = ELF64_R_SYM (rel->r_info); |
8045 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8046 | r_symndx, ibfd)) | |
8047 | goto error_ret; | |
8048 | } | |
50bc7936 AM |
8049 | } |
8050 | else | |
1e2f5b6e | 8051 | { |
51aecdc5 AM |
8052 | /* We'll be keeping this opd entry. */ |
8053 | long adjust; | |
8054 | ||
8055 | if (fdh != NULL) | |
8056 | { | |
8057 | /* Redefine the function descriptor symbol to | |
8058 | this location in the opd section. It is | |
8059 | necessary to update the value here rather | |
8060 | than using an array of adjustments as we do | |
8061 | for local symbols, because various places | |
8062 | in the generic ELF code use the value | |
8063 | stored in u.def.value. */ | |
8064 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8065 | fdh->adjust_done = 1; | |
8066 | } | |
8067 | ||
8068 | /* Local syms are a bit tricky. We could | |
8069 | tweak them as they can be cached, but | |
8070 | we'd need to look through the local syms | |
8071 | for the function descriptor sym which we | |
8072 | don't have at the moment. So keep an | |
8073 | array of adjustments. */ | |
8074 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8075 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8076 | ||
8077 | if (wptr != rptr) | |
8078 | memcpy (wptr, rptr, opd_ent_size); | |
8079 | wptr += opd_ent_size; | |
8080 | if (add_aux_fields && opd_ent_size == 16) | |
8081 | { | |
8082 | memset (wptr, '\0', 8); | |
8083 | wptr += 8; | |
8084 | } | |
8085 | ||
50bc7936 | 8086 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8087 | new opd entries. */ |
8088 | for ( ; rel != next_rel; ++rel) | |
8089 | { | |
8090 | rel->r_offset += adjust; | |
8091 | if (write_rel != rel) | |
8092 | memcpy (write_rel, rel, sizeof (*rel)); | |
8093 | ++write_rel; | |
8094 | } | |
1e2f5b6e | 8095 | } |
51aecdc5 AM |
8096 | |
8097 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8098 | } |
8099 | ||
3f764659 | 8100 | sec->size = wptr - new_contents; |
1e2f5b6e | 8101 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8102 | if (add_aux_fields) |
8103 | { | |
8104 | free (sec->contents); | |
8105 | sec->contents = new_contents; | |
8106 | } | |
8107 | ||
05bf9422 | 8108 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8109 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8110 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8111 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8112 | some_edited = TRUE; |
1e2f5b6e | 8113 | } |
6cdc0ccc | 8114 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8115 | free (relstart); |
6cdc0ccc | 8116 | |
411e1bfb AM |
8117 | if (local_syms != NULL |
8118 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8119 | { | |
8120 | if (!info->keep_memory) | |
8121 | free (local_syms); | |
8122 | else | |
8123 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8124 | } | |
8125 | } | |
8126 | ||
754021d0 AM |
8127 | if (some_edited) |
8128 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8129 | ||
3f764659 JJ |
8130 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8131 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8132 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8133 | { |
8134 | bfd_byte *p; | |
8135 | ||
8136 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8137 | { | |
8138 | BFD_ASSERT (need_pad->size > 0); | |
8139 | ||
8140 | p = bfd_malloc (need_pad->size + 8); | |
8141 | if (p == NULL) | |
8142 | return FALSE; | |
699733f6 | 8143 | |
3f764659 JJ |
8144 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8145 | p, 0, need_pad->size)) | |
8146 | return FALSE; | |
8147 | ||
8148 | need_pad->contents = p; | |
8149 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8150 | } | |
8151 | else | |
8152 | { | |
8153 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8154 | if (p == NULL) | |
8155 | return FALSE; | |
8156 | ||
8157 | need_pad->contents = p; | |
8158 | } | |
8159 | ||
8160 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8161 | need_pad->size += 8; | |
8162 | } | |
8163 | ||
411e1bfb AM |
8164 | return TRUE; |
8165 | } | |
8166 | ||
e1918d23 | 8167 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8168 | |
e1918d23 | 8169 | asection * |
e7d1c40c | 8170 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8171 | { |
411e1bfb AM |
8172 | struct ppc_link_hash_table *htab; |
8173 | ||
411e1bfb | 8174 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8175 | if (htab == NULL) |
8176 | return NULL; | |
8177 | ||
ee67d69a AM |
8178 | if (abiversion (info->output_bfd) == 1) |
8179 | htab->opd_abi = 1; | |
8180 | ||
e7d1c40c | 8181 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8182 | htab->do_multi_toc = 0; |
8183 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8184 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8185 | |
3a71aa26 AM |
8186 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8187 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8188 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8189 | /* Move dynamic linking info to the function descriptor sym. */ |
8190 | if (htab->tls_get_addr != NULL) | |
8191 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8192 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8193 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8194 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8195 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8196 | { |
8197 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8198 | ||
8199 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8200 | FALSE, FALSE, TRUE); | |
8201 | if (opt != NULL) | |
8202 | func_desc_adjust (opt, info); | |
8203 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8204 | FALSE, FALSE, TRUE); | |
8205 | if (opt_fd != NULL | |
8206 | && (opt_fd->root.type == bfd_link_hash_defined | |
8207 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8208 | { | |
8209 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8210 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8211 | be calling __tls_get_addr via a plt call stub, then | |
8212 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8213 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8214 | if (htab->elf.dynamic_sections_created | |
8215 | && tga_fd != NULL | |
8216 | && (tga_fd->type == STT_FUNC | |
8217 | || tga_fd->needs_plt) | |
8218 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8219 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
8220 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
8221 | { | |
8222 | struct plt_entry *ent; | |
8223 | ||
8224 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8225 | if (ent->plt.refcount > 0) | |
8226 | break; | |
8227 | if (ent != NULL) | |
8228 | { | |
8229 | tga_fd->root.type = bfd_link_hash_indirect; | |
8230 | tga_fd->root.u.i.link = &opt_fd->root; | |
8231 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
3bd43ebc | 8232 | opt_fd->forced_local = 0; |
a7f2871e AM |
8233 | if (opt_fd->dynindx != -1) |
8234 | { | |
8235 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8236 | opt_fd->dynindx = -1; | |
8237 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8238 | opt_fd->dynstr_index); | |
8239 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8240 | return NULL; |
a7f2871e AM |
8241 | } |
8242 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8243 | tga = &htab->tls_get_addr->elf; | |
8244 | if (opt != NULL && tga != NULL) | |
8245 | { | |
8246 | tga->root.type = bfd_link_hash_indirect; | |
8247 | tga->root.u.i.link = &opt->root; | |
8248 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
3bd43ebc | 8249 | opt->forced_local = 0; |
a7f2871e AM |
8250 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8251 | tga->forced_local); | |
8252 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8253 | } | |
8254 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8255 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8256 | if (htab->tls_get_addr != NULL) | |
8257 | { | |
8258 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8259 | htab->tls_get_addr->is_func = 1; | |
8260 | } | |
8261 | } | |
8262 | } | |
8263 | } | |
7c9cf415 AM |
8264 | else if (htab->params->tls_get_addr_opt < 0) |
8265 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8266 | } |
33c0ec9d | 8267 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8268 | } |
8387904d | 8269 | |
3a71aa26 AM |
8270 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8271 | HASH1 or HASH2. */ | |
8387904d | 8272 | |
3a71aa26 AM |
8273 | static bfd_boolean |
8274 | branch_reloc_hash_match (const bfd *ibfd, | |
8275 | const Elf_Internal_Rela *rel, | |
8276 | const struct ppc_link_hash_entry *hash1, | |
8277 | const struct ppc_link_hash_entry *hash2) | |
8278 | { | |
8279 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8280 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8281 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8282 | ||
e054468f | 8283 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8284 | { |
3a71aa26 AM |
8285 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8286 | struct elf_link_hash_entry *h; | |
8387904d | 8287 | |
3a71aa26 | 8288 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8289 | h = elf_follow_link (h); |
3a71aa26 AM |
8290 | if (h == &hash1->elf || h == &hash2->elf) |
8291 | return TRUE; | |
a48ebf4d | 8292 | } |
3a71aa26 | 8293 | return FALSE; |
951fd09b | 8294 | } |
411e1bfb | 8295 | |
951fd09b AM |
8296 | /* Run through all the TLS relocs looking for optimization |
8297 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8298 | a preliminary section layout so that we know the TLS segment | |
8299 | offsets. We can't optimize earlier because some optimizations need | |
8300 | to know the tp offset, and we need to optimize before allocating | |
8301 | dynamic relocations. */ | |
8302 | ||
8303 | bfd_boolean | |
33c0ec9d | 8304 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8305 | { |
8306 | bfd *ibfd; | |
8307 | asection *sec; | |
8308 | struct ppc_link_hash_table *htab; | |
663a1470 | 8309 | unsigned char *toc_ref; |
102890f0 | 8310 | int pass; |
951fd09b | 8311 | |
3cbc1e5e | 8312 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8313 | return TRUE; |
8314 | ||
951fd09b | 8315 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8316 | if (htab == NULL) |
8317 | return FALSE; | |
8318 | ||
663a1470 AM |
8319 | /* Make two passes over the relocs. On the first pass, mark toc |
8320 | entries involved with tls relocs, and check that tls relocs | |
8321 | involved in setting up a tls_get_addr call are indeed followed by | |
8322 | such a call. If they are not, we can't do any tls optimization. | |
8323 | On the second pass twiddle tls_mask flags to notify | |
8324 | relocate_section that optimization can be done, and adjust got | |
8325 | and plt refcounts. */ | |
8326 | toc_ref = NULL; | |
8327 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8328 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8329 | { |
8330 | Elf_Internal_Sym *locsyms = NULL; | |
8331 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8332 | ||
102890f0 AM |
8333 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8334 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8335 | { | |
8336 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8337 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8338 | |
102890f0 AM |
8339 | /* Read the relocations. */ |
8340 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8341 | info->keep_memory); | |
8342 | if (relstart == NULL) | |
2915c55b JK |
8343 | { |
8344 | free (toc_ref); | |
8345 | return FALSE; | |
8346 | } | |
411e1bfb | 8347 | |
102890f0 AM |
8348 | relend = relstart + sec->reloc_count; |
8349 | for (rel = relstart; rel < relend; rel++) | |
8350 | { | |
8351 | enum elf_ppc64_reloc_type r_type; | |
8352 | unsigned long r_symndx; | |
8353 | struct elf_link_hash_entry *h; | |
8354 | Elf_Internal_Sym *sym; | |
8355 | asection *sym_sec; | |
f961d9dd AM |
8356 | unsigned char *tls_mask; |
8357 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8358 | bfd_vma value; |
8359 | bfd_boolean ok_tprel, is_local; | |
8360 | long toc_ref_index = 0; | |
8361 | int expecting_tls_get_addr = 0; | |
663a1470 | 8362 | bfd_boolean ret = FALSE; |
411e1bfb | 8363 | |
102890f0 AM |
8364 | r_symndx = ELF64_R_SYM (rel->r_info); |
8365 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8366 | r_symndx, ibfd)) | |
8367 | { | |
8368 | err_free_rel: | |
8369 | if (elf_section_data (sec)->relocs != relstart) | |
8370 | free (relstart); | |
8371 | if (toc_ref != NULL) | |
8372 | free (toc_ref); | |
8373 | if (locsyms != NULL | |
0ffa91dd | 8374 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8375 | != (unsigned char *) locsyms)) |
8376 | free (locsyms); | |
663a1470 | 8377 | return ret; |
102890f0 | 8378 | } |
411e1bfb | 8379 | |
102890f0 AM |
8380 | if (h != NULL) |
8381 | { | |
766bc656 AM |
8382 | if (h->root.type == bfd_link_hash_defined |
8383 | || h->root.type == bfd_link_hash_defweak) | |
8384 | value = h->root.u.def.value; | |
8385 | else if (h->root.type == bfd_link_hash_undefweak) | |
8386 | value = 0; | |
8387 | else | |
663a1470 AM |
8388 | { |
8389 | found_tls_get_addr_arg = 0; | |
8390 | continue; | |
8391 | } | |
102890f0 AM |
8392 | } |
8393 | else | |
8394 | /* Symbols referenced by TLS relocs must be of type | |
8395 | STT_TLS. So no need for .opd local sym adjust. */ | |
8396 | value = sym->st_value; | |
8397 | ||
8398 | ok_tprel = FALSE; | |
8399 | is_local = FALSE; | |
8400 | if (h == NULL | |
8401 | || !h->def_dynamic) | |
8402 | { | |
8403 | is_local = TRUE; | |
766bc656 AM |
8404 | if (h != NULL |
8405 | && h->root.type == bfd_link_hash_undefweak) | |
8406 | ok_tprel = TRUE; | |
c27b8c2a AM |
8407 | else if (sym_sec != NULL |
8408 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8409 | { |
8410 | value += sym_sec->output_offset; | |
8411 | value += sym_sec->output_section->vma; | |
8412 | value -= htab->elf.tls_sec->vma; | |
8413 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8414 | < (bfd_vma) 1 << 32); | |
8415 | } | |
102890f0 | 8416 | } |
951fd09b | 8417 | |
102890f0 | 8418 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8419 | /* If this section has old-style __tls_get_addr calls |
8420 | without marker relocs, then check that each | |
8421 | __tls_get_addr call reloc is preceded by a reloc | |
8422 | that conceivably belongs to the __tls_get_addr arg | |
8423 | setup insn. If we don't find matching arg setup | |
8424 | relocs, don't do any tls optimization. */ | |
8425 | if (pass == 0 | |
8426 | && sec->has_tls_get_addr_call | |
8427 | && h != NULL | |
8428 | && (h == &htab->tls_get_addr->elf | |
8429 | || h == &htab->tls_get_addr_fd->elf) | |
8430 | && !found_tls_get_addr_arg | |
8431 | && is_branch_reloc (r_type)) | |
8432 | { | |
25f53a85 | 8433 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8434 | "TLS optimization disabled\n"), |
8435 | ibfd, sec, rel->r_offset); | |
8436 | ret = TRUE; | |
8437 | goto err_free_rel; | |
8438 | } | |
8439 | ||
8440 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8441 | switch (r_type) |
8442 | { | |
8443 | case R_PPC64_GOT_TLSLD16: | |
8444 | case R_PPC64_GOT_TLSLD16_LO: | |
8445 | expecting_tls_get_addr = 1; | |
663a1470 | 8446 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8447 | /* Fall thru */ |
8448 | ||
8449 | case R_PPC64_GOT_TLSLD16_HI: | |
8450 | case R_PPC64_GOT_TLSLD16_HA: | |
8451 | /* These relocs should never be against a symbol | |
8452 | defined in a shared lib. Leave them alone if | |
8453 | that turns out to be the case. */ | |
8454 | if (!is_local) | |
8455 | continue; | |
411e1bfb | 8456 | |
102890f0 | 8457 | /* LD -> LE */ |
411e1bfb | 8458 | tls_set = 0; |
102890f0 AM |
8459 | tls_clear = TLS_LD; |
8460 | tls_type = TLS_TLS | TLS_LD; | |
8461 | break; | |
411e1bfb | 8462 | |
102890f0 AM |
8463 | case R_PPC64_GOT_TLSGD16: |
8464 | case R_PPC64_GOT_TLSGD16_LO: | |
8465 | expecting_tls_get_addr = 1; | |
663a1470 | 8466 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8467 | /* Fall thru */ |
8468 | ||
8469 | case R_PPC64_GOT_TLSGD16_HI: | |
8470 | case R_PPC64_GOT_TLSGD16_HA: | |
8471 | if (ok_tprel) | |
8472 | /* GD -> LE */ | |
411e1bfb | 8473 | tls_set = 0; |
102890f0 AM |
8474 | else |
8475 | /* GD -> IE */ | |
8476 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8477 | tls_clear = TLS_GD; | |
8478 | tls_type = TLS_TLS | TLS_GD; | |
8479 | break; | |
8480 | ||
8481 | case R_PPC64_GOT_TPREL16_DS: | |
8482 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8483 | case R_PPC64_GOT_TPREL16_HI: | |
8484 | case R_PPC64_GOT_TPREL16_HA: | |
8485 | if (ok_tprel) | |
8486 | { | |
8487 | /* IE -> LE */ | |
8488 | tls_set = 0; | |
8489 | tls_clear = TLS_TPREL; | |
8490 | tls_type = TLS_TLS | TLS_TPREL; | |
8491 | break; | |
8492 | } | |
411e1bfb AM |
8493 | continue; |
8494 | ||
727fc41e AM |
8495 | case R_PPC64_TLSGD: |
8496 | case R_PPC64_TLSLD: | |
663a1470 AM |
8497 | found_tls_get_addr_arg = 1; |
8498 | /* Fall thru */ | |
8499 | ||
8500 | case R_PPC64_TLS: | |
8501 | case R_PPC64_TOC16: | |
8502 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8503 | if (sym_sec == NULL || sym_sec != toc) |
8504 | continue; | |
8505 | ||
8506 | /* Mark this toc entry as referenced by a TLS | |
8507 | code sequence. We can do that now in the | |
8508 | case of R_PPC64_TLS, and after checking for | |
8509 | tls_get_addr for the TOC16 relocs. */ | |
8510 | if (toc_ref == NULL) | |
663a1470 AM |
8511 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8512 | if (toc_ref == NULL) | |
8513 | goto err_free_rel; | |
8514 | ||
102890f0 AM |
8515 | if (h != NULL) |
8516 | value = h->root.u.def.value; | |
8517 | else | |
8518 | value = sym->st_value; | |
8519 | value += rel->r_addend; | |
73242275 AM |
8520 | if (value % 8 != 0) |
8521 | continue; | |
8522 | BFD_ASSERT (value < toc->size | |
8523 | && toc->output_offset % 8 == 0); | |
663a1470 | 8524 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8525 | if (r_type == R_PPC64_TLS |
8526 | || r_type == R_PPC64_TLSGD | |
8527 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8528 | { |
8529 | toc_ref[toc_ref_index] = 1; | |
8530 | continue; | |
8531 | } | |
8532 | ||
8533 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8534 | continue; | |
8535 | ||
8536 | tls_set = 0; | |
8537 | tls_clear = 0; | |
8538 | expecting_tls_get_addr = 2; | |
8539 | break; | |
8540 | ||
8541 | case R_PPC64_TPREL64: | |
8542 | if (pass == 0 | |
8543 | || sec != toc | |
8544 | || toc_ref == NULL | |
663a1470 | 8545 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8546 | continue; |
8547 | if (ok_tprel) | |
8548 | { | |
8549 | /* IE -> LE */ | |
8550 | tls_set = TLS_EXPLICIT; | |
8551 | tls_clear = TLS_TPREL; | |
8552 | break; | |
8553 | } | |
8554 | continue; | |
8555 | ||
8556 | case R_PPC64_DTPMOD64: | |
8557 | if (pass == 0 | |
8558 | || sec != toc | |
8559 | || toc_ref == NULL | |
663a1470 | 8560 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8561 | continue; |
8562 | if (rel + 1 < relend | |
8563 | && (rel[1].r_info | |
8564 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8565 | && rel[1].r_offset == rel->r_offset + 8) | |
8566 | { | |
8567 | if (ok_tprel) | |
8568 | /* GD -> LE */ | |
8569 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8570 | else | |
8571 | /* GD -> IE */ | |
8572 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8573 | tls_clear = TLS_GD; | |
8574 | } | |
8575 | else | |
8576 | { | |
8577 | if (!is_local) | |
8578 | continue; | |
8579 | ||
8580 | /* LD -> LE */ | |
8581 | tls_set = TLS_EXPLICIT; | |
8582 | tls_clear = TLS_LD; | |
8583 | } | |
8584 | break; | |
8585 | ||
8586 | default: | |
8587 | continue; | |
8588 | } | |
8589 | ||
8590 | if (pass == 0) | |
8591 | { | |
727fc41e AM |
8592 | if (!expecting_tls_get_addr |
8593 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8594 | continue; |
8595 | ||
3a71aa26 AM |
8596 | if (rel + 1 < relend |
8597 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8598 | htab->tls_get_addr, | |
8599 | htab->tls_get_addr_fd)) | |
102890f0 | 8600 | { |
3a71aa26 | 8601 | if (expecting_tls_get_addr == 2) |
102890f0 | 8602 | { |
3a71aa26 | 8603 | /* Check for toc tls entries. */ |
f961d9dd | 8604 | unsigned char *toc_tls; |
3a71aa26 AM |
8605 | int retval; |
8606 | ||
8607 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8608 | &locsyms, | |
8609 | rel, ibfd); | |
8610 | if (retval == 0) | |
8611 | goto err_free_rel; | |
663a1470 AM |
8612 | if (toc_tls != NULL) |
8613 | { | |
8614 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8615 | found_tls_get_addr_arg = 1; | |
8616 | if (retval > 1) | |
8617 | toc_ref[toc_ref_index] = 1; | |
8618 | } | |
102890f0 | 8619 | } |
3a71aa26 | 8620 | continue; |
102890f0 AM |
8621 | } |
8622 | ||
8623 | if (expecting_tls_get_addr != 1) | |
8624 | continue; | |
8625 | ||
8626 | /* Uh oh, we didn't find the expected call. We | |
8627 | could just mark this symbol to exclude it | |
8628 | from tls optimization but it's safer to skip | |
663a1470 | 8629 | the entire optimization. */ |
25f53a85 | 8630 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8631 | "TLS optimization disabled\n"), |
8632 | ibfd, sec, rel->r_offset); | |
8633 | ret = TRUE; | |
8634 | goto err_free_rel; | |
102890f0 AM |
8635 | } |
8636 | ||
85f7a9cb | 8637 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8638 | { |
8639 | struct plt_entry *ent; | |
8640 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8641 | ent != NULL; | |
8642 | ent = ent->next) | |
8643 | if (ent->addend == 0) | |
411e1bfb | 8644 | { |
102890f0 | 8645 | if (ent->plt.refcount > 0) |
30038c59 | 8646 | { |
102890f0 AM |
8647 | ent->plt.refcount -= 1; |
8648 | expecting_tls_get_addr = 0; | |
30038c59 | 8649 | } |
102890f0 | 8650 | break; |
411e1bfb | 8651 | } |
102890f0 | 8652 | } |
411e1bfb | 8653 | |
85f7a9cb | 8654 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8655 | { |
8656 | struct plt_entry *ent; | |
8657 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8658 | ent != NULL; | |
8659 | ent = ent->next) | |
8660 | if (ent->addend == 0) | |
411e1bfb | 8661 | { |
102890f0 AM |
8662 | if (ent->plt.refcount > 0) |
8663 | ent->plt.refcount -= 1; | |
8664 | break; | |
411e1bfb | 8665 | } |
102890f0 | 8666 | } |
411e1bfb | 8667 | |
102890f0 | 8668 | if (tls_clear == 0) |
30038c59 AM |
8669 | continue; |
8670 | ||
102890f0 AM |
8671 | if ((tls_set & TLS_EXPLICIT) == 0) |
8672 | { | |
8673 | struct got_entry *ent; | |
411e1bfb | 8674 | |
102890f0 AM |
8675 | /* Adjust got entry for this reloc. */ |
8676 | if (h != NULL) | |
8677 | ent = h->got.glist; | |
8678 | else | |
8679 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8680 | |
102890f0 AM |
8681 | for (; ent != NULL; ent = ent->next) |
8682 | if (ent->addend == rel->r_addend | |
8683 | && ent->owner == ibfd | |
8684 | && ent->tls_type == tls_type) | |
8685 | break; | |
8686 | if (ent == NULL) | |
8687 | abort (); | |
411e1bfb | 8688 | |
102890f0 AM |
8689 | if (tls_set == 0) |
8690 | { | |
8691 | /* We managed to get rid of a got entry. */ | |
8692 | if (ent->got.refcount > 0) | |
8693 | ent->got.refcount -= 1; | |
8694 | } | |
8695 | } | |
8696 | else | |
8697 | { | |
8698 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8699 | we'll lose one or two dyn relocs. */ | |
8700 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8701 | NULL, h, sym)) |
102890f0 | 8702 | return FALSE; |
411e1bfb | 8703 | |
102890f0 AM |
8704 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8705 | { | |
8706 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8707 | NULL, h, sym)) |
102890f0 AM |
8708 | return FALSE; |
8709 | } | |
8710 | } | |
411e1bfb | 8711 | |
102890f0 AM |
8712 | *tls_mask |= tls_set; |
8713 | *tls_mask &= ~tls_clear; | |
8714 | } | |
8c1d1bb8 | 8715 | |
102890f0 AM |
8716 | if (elf_section_data (sec)->relocs != relstart) |
8717 | free (relstart); | |
8718 | } | |
411e1bfb | 8719 | |
663a1470 AM |
8720 | if (locsyms != NULL |
8721 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8722 | { | |
8723 | if (!info->keep_memory) | |
8724 | free (locsyms); | |
8725 | else | |
8726 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8727 | } | |
8728 | } | |
411e1bfb | 8729 | |
663a1470 AM |
8730 | if (toc_ref != NULL) |
8731 | free (toc_ref); | |
b34976b6 | 8732 | return TRUE; |
1e2f5b6e | 8733 | } |
b34976b6 | 8734 | |
c5614fa4 AM |
8735 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8736 | the values of any global symbols in a toc section that has been | |
8737 | edited. Globals in toc sections should be a rarity, so this function | |
8738 | sets a flag if any are found in toc sections other than the one just | |
8739 | edited, so that futher hash table traversals can be avoided. */ | |
8740 | ||
8741 | struct adjust_toc_info | |
8742 | { | |
8743 | asection *toc; | |
8744 | unsigned long *skip; | |
8745 | bfd_boolean global_toc_syms; | |
8746 | }; | |
8747 | ||
ba761f19 AM |
8748 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8749 | ||
c5614fa4 AM |
8750 | static bfd_boolean |
8751 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8752 | { | |
8753 | struct ppc_link_hash_entry *eh; | |
8754 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8755 | unsigned long i; |
c5614fa4 | 8756 | |
c5614fa4 AM |
8757 | if (h->root.type != bfd_link_hash_defined |
8758 | && h->root.type != bfd_link_hash_defweak) | |
8759 | return TRUE; | |
8760 | ||
8761 | eh = (struct ppc_link_hash_entry *) h; | |
8762 | if (eh->adjust_done) | |
8763 | return TRUE; | |
8764 | ||
8765 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8766 | { | |
854b41e7 AM |
8767 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8768 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8769 | else |
854b41e7 AM |
8770 | i = eh->elf.root.u.def.value >> 3; |
8771 | ||
ba761f19 | 8772 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8773 | { |
8774 | (*_bfd_error_handler) | |
854b41e7 AM |
8775 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8776 | do | |
8777 | ++i; | |
ba761f19 | 8778 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8779 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8780 | } |
854b41e7 AM |
8781 | |
8782 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8783 | eh->adjust_done = 1; |
8784 | } | |
8785 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8786 | toc_inf->global_toc_syms = TRUE; | |
8787 | ||
8788 | return TRUE; | |
8789 | } | |
8790 | ||
560c8763 AM |
8791 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8792 | ||
8793 | static bfd_boolean | |
8794 | ok_lo_toc_insn (unsigned int insn) | |
8795 | { | |
8796 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8797 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8798 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8799 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8800 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8801 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8802 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8803 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8804 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8805 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8806 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8807 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8808 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8809 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8810 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8811 | && (insn & 3) != 1) | |
8812 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8813 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8814 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8815 | } | |
8816 | ||
c5614fa4 AM |
8817 | /* Examine all relocs referencing .toc sections in order to remove |
8818 | unused .toc entries. */ | |
8819 | ||
8820 | bfd_boolean | |
33c0ec9d | 8821 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8822 | { |
8823 | bfd *ibfd; | |
8824 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8825 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8826 | |
67f0cbdb | 8827 | htab->do_toc_opt = 1; |
c5614fa4 | 8828 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8829 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8830 | { |
8831 | asection *toc, *sec; | |
8832 | Elf_Internal_Shdr *symtab_hdr; | |
8833 | Elf_Internal_Sym *local_syms; | |
425b145b | 8834 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8835 | unsigned long *skip, *drop; |
8836 | unsigned char *used; | |
8837 | unsigned char *keep, last, some_unused; | |
8838 | ||
854b41e7 AM |
8839 | if (!is_ppc64_elf (ibfd)) |
8840 | continue; | |
8841 | ||
c5614fa4 AM |
8842 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8843 | if (toc == NULL | |
92b7a70f | 8844 | || toc->size == 0 |
dbaa2011 AM |
8845 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8846 | || discarded_section (toc)) | |
c5614fa4 AM |
8847 | continue; |
8848 | ||
425b145b | 8849 | toc_relocs = NULL; |
c5614fa4 | 8850 | local_syms = NULL; |
0ffa91dd | 8851 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8852 | |
8853 | /* Look at sections dropped from the final link. */ | |
8854 | skip = NULL; | |
8855 | relstart = NULL; | |
8856 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8857 | { | |
8858 | if (sec->reloc_count == 0 | |
dbaa2011 | 8859 | || !discarded_section (sec) |
c5614fa4 AM |
8860 | || get_opd_info (sec) |
8861 | || (sec->flags & SEC_ALLOC) == 0 | |
8862 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8863 | continue; | |
8864 | ||
8865 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8866 | if (relstart == NULL) | |
8867 | goto error_ret; | |
8868 | ||
8869 | /* Run through the relocs to see which toc entries might be | |
8870 | unused. */ | |
8871 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8872 | { | |
8873 | enum elf_ppc64_reloc_type r_type; | |
8874 | unsigned long r_symndx; | |
8875 | asection *sym_sec; | |
8876 | struct elf_link_hash_entry *h; | |
8877 | Elf_Internal_Sym *sym; | |
8878 | bfd_vma val; | |
8879 | ||
8880 | r_type = ELF64_R_TYPE (rel->r_info); | |
8881 | switch (r_type) | |
8882 | { | |
8883 | default: | |
8884 | continue; | |
8885 | ||
8886 | case R_PPC64_TOC16: | |
8887 | case R_PPC64_TOC16_LO: | |
8888 | case R_PPC64_TOC16_HI: | |
8889 | case R_PPC64_TOC16_HA: | |
8890 | case R_PPC64_TOC16_DS: | |
8891 | case R_PPC64_TOC16_LO_DS: | |
8892 | break; | |
8893 | } | |
8894 | ||
8895 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8896 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8897 | r_symndx, ibfd)) | |
8898 | goto error_ret; | |
8899 | ||
8900 | if (sym_sec != toc) | |
8901 | continue; | |
8902 | ||
8903 | if (h != NULL) | |
8904 | val = h->root.u.def.value; | |
8905 | else | |
8906 | val = sym->st_value; | |
8907 | val += rel->r_addend; | |
8908 | ||
8909 | if (val >= toc->size) | |
8910 | continue; | |
8911 | ||
8912 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8913 | If not, don't mark as unused. */ | |
8914 | if (val & 7) | |
8915 | continue; | |
8916 | ||
8917 | if (skip == NULL) | |
8918 | { | |
854b41e7 | 8919 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8920 | if (skip == NULL) |
8921 | goto error_ret; | |
8922 | } | |
8923 | ||
ba761f19 | 8924 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8925 | } |
8926 | ||
8927 | if (elf_section_data (sec)->relocs != relstart) | |
8928 | free (relstart); | |
8929 | } | |
8930 | ||
ba761f19 AM |
8931 | /* For largetoc loads of address constants, we can convert |
8932 | . addis rx,2,addr@got@ha | |
8933 | . ld ry,addr@got@l(rx) | |
8934 | to | |
8935 | . addis rx,2,addr@toc@ha | |
8936 | . addi ry,rx,addr@toc@l | |
8937 | when addr is within 2G of the toc pointer. This then means | |
8938 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8939 | |
ba761f19 AM |
8940 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8941 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8942 | && toc->reloc_count != 0) | |
8943 | { | |
8944 | /* Read toc relocs. */ | |
425b145b AM |
8945 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8946 | info->keep_memory); | |
8947 | if (toc_relocs == NULL) | |
ba761f19 AM |
8948 | goto error_ret; |
8949 | ||
425b145b | 8950 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8951 | { |
8952 | enum elf_ppc64_reloc_type r_type; | |
8953 | unsigned long r_symndx; | |
8954 | asection *sym_sec; | |
8955 | struct elf_link_hash_entry *h; | |
8956 | Elf_Internal_Sym *sym; | |
8957 | bfd_vma val, addr; | |
8958 | ||
8959 | r_type = ELF64_R_TYPE (rel->r_info); | |
8960 | if (r_type != R_PPC64_ADDR64) | |
8961 | continue; | |
8962 | ||
8963 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8964 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8965 | r_symndx, ibfd)) | |
8966 | goto error_ret; | |
8967 | ||
425b145b | 8968 | if (sym_sec == NULL |
c27b8c2a | 8969 | || sym_sec->output_section == NULL |
dbaa2011 | 8970 | || discarded_section (sym_sec)) |
425b145b AM |
8971 | continue; |
8972 | ||
afe397ea | 8973 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8974 | continue; |
8975 | ||
8976 | if (h != NULL) | |
bddc25c9 AM |
8977 | { |
8978 | if (h->type == STT_GNU_IFUNC) | |
8979 | continue; | |
8980 | val = h->root.u.def.value; | |
8981 | } | |
ba761f19 | 8982 | else |
bddc25c9 AM |
8983 | { |
8984 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8985 | continue; | |
8986 | val = sym->st_value; | |
8987 | } | |
ba761f19 AM |
8988 | val += rel->r_addend; |
8989 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8990 | ||
8991 | /* We don't yet know the exact toc pointer value, but we | |
8992 | know it will be somewhere in the toc section. Don't | |
8993 | optimize if the difference from any possible toc | |
8994 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8995 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8996 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8997 | continue; | |
8998 | ||
8999 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9000 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9001 | continue; | |
9002 | ||
9003 | if (skip == NULL) | |
9004 | { | |
9005 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9006 | if (skip == NULL) | |
9007 | goto error_ret; | |
9008 | } | |
9009 | ||
9010 | skip[rel->r_offset >> 3] | |
425b145b | 9011 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9012 | } |
ba761f19 AM |
9013 | } |
9014 | ||
c5614fa4 AM |
9015 | if (skip == NULL) |
9016 | continue; | |
9017 | ||
9018 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9019 | if (used == NULL) | |
9020 | { | |
9021 | error_ret: | |
9022 | if (local_syms != NULL | |
9023 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9024 | free (local_syms); | |
9025 | if (sec != NULL | |
9026 | && relstart != NULL | |
9027 | && elf_section_data (sec)->relocs != relstart) | |
9028 | free (relstart); | |
425b145b AM |
9029 | if (toc_relocs != NULL |
9030 | && elf_section_data (toc)->relocs != toc_relocs) | |
9031 | free (toc_relocs); | |
c5614fa4 AM |
9032 | if (skip != NULL) |
9033 | free (skip); | |
9034 | return FALSE; | |
9035 | } | |
9036 | ||
30038c59 AM |
9037 | /* Now check all kept sections that might reference the toc. |
9038 | Check the toc itself last. */ | |
9039 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9040 | : ibfd->sections); | |
c5614fa4 | 9041 | sec != NULL; |
c5614fa4 | 9042 | sec = (sec == toc ? NULL |
c5614fa4 | 9043 | : sec->next == NULL ? toc |
30038c59 | 9044 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9045 | : sec->next)) |
9046 | { | |
9047 | int repeat; | |
9048 | ||
9049 | if (sec->reloc_count == 0 | |
dbaa2011 | 9050 | || discarded_section (sec) |
c5614fa4 AM |
9051 | || get_opd_info (sec) |
9052 | || (sec->flags & SEC_ALLOC) == 0 | |
9053 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9054 | continue; | |
9055 | ||
854b41e7 AM |
9056 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9057 | info->keep_memory); | |
c5614fa4 | 9058 | if (relstart == NULL) |
2915c55b JK |
9059 | { |
9060 | free (used); | |
9061 | goto error_ret; | |
9062 | } | |
c5614fa4 AM |
9063 | |
9064 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9065 | do |
d4f1ee75 AM |
9066 | { |
9067 | repeat = 0; | |
9068 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9069 | { | |
9070 | enum elf_ppc64_reloc_type r_type; | |
9071 | unsigned long r_symndx; | |
9072 | asection *sym_sec; | |
9073 | struct elf_link_hash_entry *h; | |
9074 | Elf_Internal_Sym *sym; | |
9075 | bfd_vma val; | |
9076 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9077 | |
d4f1ee75 AM |
9078 | r_type = ELF64_R_TYPE (rel->r_info); |
9079 | switch (r_type) | |
9080 | { | |
9081 | default: | |
9082 | insn_check = no_check; | |
9083 | break; | |
98528052 | 9084 | |
d4f1ee75 AM |
9085 | case R_PPC64_GOT_TLSLD16_HA: |
9086 | case R_PPC64_GOT_TLSGD16_HA: | |
9087 | case R_PPC64_GOT_TPREL16_HA: | |
9088 | case R_PPC64_GOT_DTPREL16_HA: | |
9089 | case R_PPC64_GOT16_HA: | |
9090 | case R_PPC64_TOC16_HA: | |
9091 | insn_check = check_ha; | |
9092 | break; | |
98528052 | 9093 | |
d4f1ee75 AM |
9094 | case R_PPC64_GOT_TLSLD16_LO: |
9095 | case R_PPC64_GOT_TLSGD16_LO: | |
9096 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9097 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9098 | case R_PPC64_GOT16_LO: | |
9099 | case R_PPC64_GOT16_LO_DS: | |
9100 | case R_PPC64_TOC16_LO: | |
9101 | case R_PPC64_TOC16_LO_DS: | |
9102 | insn_check = check_lo; | |
9103 | break; | |
9104 | } | |
560c8763 | 9105 | |
d4f1ee75 AM |
9106 | if (insn_check != no_check) |
9107 | { | |
9108 | bfd_vma off = rel->r_offset & ~3; | |
9109 | unsigned char buf[4]; | |
9110 | unsigned int insn; | |
c5614fa4 | 9111 | |
d4f1ee75 AM |
9112 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9113 | { | |
9114 | free (used); | |
9115 | goto error_ret; | |
9116 | } | |
9117 | insn = bfd_get_32 (ibfd, buf); | |
9118 | if (insn_check == check_lo | |
9119 | ? !ok_lo_toc_insn (insn) | |
9120 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9121 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9122 | { | |
9123 | char str[12]; | |
9124 | ||
9125 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9126 | sprintf (str, "%#08x", insn); | |
9127 | info->callbacks->einfo | |
9128 | (_("%P: %H: toc optimization is not supported for" | |
9129 | " %s instruction.\n"), | |
9130 | ibfd, sec, rel->r_offset & ~3, str); | |
9131 | } | |
9132 | } | |
c5614fa4 | 9133 | |
d4f1ee75 AM |
9134 | switch (r_type) |
9135 | { | |
9136 | case R_PPC64_TOC16: | |
9137 | case R_PPC64_TOC16_LO: | |
9138 | case R_PPC64_TOC16_HI: | |
9139 | case R_PPC64_TOC16_HA: | |
9140 | case R_PPC64_TOC16_DS: | |
9141 | case R_PPC64_TOC16_LO_DS: | |
9142 | /* In case we're taking addresses of toc entries. */ | |
9143 | case R_PPC64_ADDR64: | |
9144 | break; | |
c5614fa4 | 9145 | |
d4f1ee75 AM |
9146 | default: |
9147 | continue; | |
9148 | } | |
c5614fa4 | 9149 | |
d4f1ee75 AM |
9150 | r_symndx = ELF64_R_SYM (rel->r_info); |
9151 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9152 | r_symndx, ibfd)) | |
9153 | { | |
9154 | free (used); | |
9155 | goto error_ret; | |
9156 | } | |
c5614fa4 | 9157 | |
d4f1ee75 AM |
9158 | if (sym_sec != toc) |
9159 | continue; | |
c5614fa4 | 9160 | |
d4f1ee75 AM |
9161 | if (h != NULL) |
9162 | val = h->root.u.def.value; | |
9163 | else | |
9164 | val = sym->st_value; | |
9165 | val += rel->r_addend; | |
ba761f19 | 9166 | |
d4f1ee75 AM |
9167 | if (val >= toc->size) |
9168 | continue; | |
ba761f19 | 9169 | |
d4f1ee75 AM |
9170 | if ((skip[val >> 3] & can_optimize) != 0) |
9171 | { | |
9172 | bfd_vma off; | |
9173 | unsigned char opc; | |
9174 | ||
9175 | switch (r_type) | |
9176 | { | |
9177 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9178 | break; |
ba761f19 | 9179 | |
d4f1ee75 AM |
9180 | case R_PPC64_TOC16_LO_DS: |
9181 | off = rel->r_offset; | |
9182 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9183 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9184 | off, 1)) | |
9185 | { | |
9186 | free (used); | |
9187 | goto error_ret; | |
9188 | } | |
9189 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9190 | break; | |
9191 | /* Fall thru */ | |
ba761f19 | 9192 | |
d4f1ee75 AM |
9193 | default: |
9194 | /* Wrong sort of reloc, or not a ld. We may | |
9195 | as well clear ref_from_discarded too. */ | |
9196 | skip[val >> 3] = 0; | |
9197 | } | |
9198 | } | |
9199 | ||
9200 | if (sec != toc) | |
9201 | used[val >> 3] = 1; | |
9202 | /* For the toc section, we only mark as used if this | |
9203 | entry itself isn't unused. */ | |
9204 | else if ((used[rel->r_offset >> 3] | |
9205 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9206 | && !used[val >> 3]) | |
9207 | { | |
9208 | /* Do all the relocs again, to catch reference | |
9209 | chains. */ | |
9210 | repeat = 1; | |
9211 | used[val >> 3] = 1; | |
9212 | } | |
9213 | } | |
9214 | } | |
c5614fa4 | 9215 | while (repeat); |
854b41e7 AM |
9216 | |
9217 | if (elf_section_data (sec)->relocs != relstart) | |
9218 | free (relstart); | |
c5614fa4 AM |
9219 | } |
9220 | ||
9221 | /* Merge the used and skip arrays. Assume that TOC | |
9222 | doublewords not appearing as either used or unused belong | |
9223 | to to an entry more than one doubleword in size. */ | |
9224 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
9225 | drop < skip + (toc->size + 7) / 8; | |
9226 | ++drop, ++keep) | |
9227 | { | |
9228 | if (*keep) | |
9229 | { | |
ba761f19 AM |
9230 | *drop &= ~ref_from_discarded; |
9231 | if ((*drop & can_optimize) != 0) | |
9232 | some_unused = 1; | |
c5614fa4 AM |
9233 | last = 0; |
9234 | } | |
b140b010 | 9235 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9236 | { |
9237 | some_unused = 1; | |
ba761f19 | 9238 | last = ref_from_discarded; |
c5614fa4 AM |
9239 | } |
9240 | else | |
9241 | *drop = last; | |
9242 | } | |
9243 | ||
9244 | free (used); | |
9245 | ||
9246 | if (some_unused) | |
9247 | { | |
9248 | bfd_byte *contents, *src; | |
9249 | unsigned long off; | |
d62b3684 | 9250 | Elf_Internal_Sym *sym; |
ba761f19 | 9251 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9252 | |
9253 | /* Shuffle the toc contents, and at the same time convert the | |
9254 | skip array from booleans into offsets. */ | |
9255 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9256 | goto error_ret; | |
9257 | ||
9258 | elf_section_data (toc)->this_hdr.contents = contents; | |
9259 | ||
9260 | for (src = contents, off = 0, drop = skip; | |
9261 | src < contents + toc->size; | |
9262 | src += 8, ++drop) | |
9263 | { | |
ba761f19 AM |
9264 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9265 | off += 8; | |
c5614fa4 AM |
9266 | else if (off != 0) |
9267 | { | |
9268 | *drop = off; | |
9269 | memcpy (src - off, src, 8); | |
9270 | } | |
9271 | } | |
854b41e7 | 9272 | *drop = off; |
c5614fa4 AM |
9273 | toc->rawsize = toc->size; |
9274 | toc->size = src - contents - off; | |
9275 | ||
ba761f19 AM |
9276 | /* Adjust addends for relocs against the toc section sym, |
9277 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9278 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9279 | { | |
9280 | if (sec->reloc_count == 0 | |
dbaa2011 | 9281 | || discarded_section (sec)) |
c5614fa4 AM |
9282 | continue; |
9283 | ||
9284 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9285 | info->keep_memory); |
c5614fa4 AM |
9286 | if (relstart == NULL) |
9287 | goto error_ret; | |
9288 | ||
9289 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9290 | { | |
9291 | enum elf_ppc64_reloc_type r_type; | |
9292 | unsigned long r_symndx; | |
9293 | asection *sym_sec; | |
9294 | struct elf_link_hash_entry *h; | |
854b41e7 | 9295 | bfd_vma val; |
c5614fa4 AM |
9296 | |
9297 | r_type = ELF64_R_TYPE (rel->r_info); | |
9298 | switch (r_type) | |
9299 | { | |
9300 | default: | |
9301 | continue; | |
9302 | ||
9303 | case R_PPC64_TOC16: | |
9304 | case R_PPC64_TOC16_LO: | |
9305 | case R_PPC64_TOC16_HI: | |
9306 | case R_PPC64_TOC16_HA: | |
9307 | case R_PPC64_TOC16_DS: | |
9308 | case R_PPC64_TOC16_LO_DS: | |
9309 | case R_PPC64_ADDR64: | |
9310 | break; | |
9311 | } | |
9312 | ||
9313 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9314 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9315 | r_symndx, ibfd)) | |
9316 | goto error_ret; | |
9317 | ||
ba761f19 | 9318 | if (sym_sec != toc) |
c5614fa4 AM |
9319 | continue; |
9320 | ||
ba761f19 AM |
9321 | if (h != NULL) |
9322 | val = h->root.u.def.value; | |
9323 | else | |
9324 | { | |
9325 | val = sym->st_value; | |
9326 | if (val != 0) | |
9327 | local_toc_syms = TRUE; | |
9328 | } | |
9329 | ||
9330 | val += rel->r_addend; | |
854b41e7 AM |
9331 | |
9332 | if (val > toc->rawsize) | |
9333 | val = toc->rawsize; | |
ba761f19 AM |
9334 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9335 | continue; | |
9336 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9337 | { | |
9338 | Elf_Internal_Rela *tocrel | |
425b145b | 9339 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9340 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9341 | ||
9342 | switch (r_type) | |
9343 | { | |
9344 | case R_PPC64_TOC16_HA: | |
9345 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9346 | break; | |
9347 | ||
9348 | case R_PPC64_TOC16_LO_DS: | |
9349 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9350 | break; | |
9351 | ||
9352 | default: | |
28942f62 AM |
9353 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9354 | ppc_howto_init (); | |
b140b010 | 9355 | info->callbacks->einfo |
bc30df16 | 9356 | (_("%P: %H: %s references " |
b140b010 AM |
9357 | "optimized away TOC entry\n"), |
9358 | ibfd, sec, rel->r_offset, | |
9359 | ppc64_elf_howto_table[r_type]->name); | |
9360 | bfd_set_error (bfd_error_bad_value); | |
9361 | goto error_ret; | |
ba761f19 AM |
9362 | } |
9363 | rel->r_addend = tocrel->r_addend; | |
9364 | elf_section_data (sec)->relocs = relstart; | |
9365 | continue; | |
9366 | } | |
9367 | ||
9368 | if (h != NULL || sym->st_value != 0) | |
9369 | continue; | |
854b41e7 AM |
9370 | |
9371 | rel->r_addend -= skip[val >> 3]; | |
9372 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9373 | } |
854b41e7 AM |
9374 | |
9375 | if (elf_section_data (sec)->relocs != relstart) | |
9376 | free (relstart); | |
c5614fa4 AM |
9377 | } |
9378 | ||
9379 | /* We shouldn't have local or global symbols defined in the TOC, | |
9380 | but handle them anyway. */ | |
df22d223 AM |
9381 | if (local_syms != NULL) |
9382 | for (sym = local_syms; | |
9383 | sym < local_syms + symtab_hdr->sh_info; | |
9384 | ++sym) | |
9385 | if (sym->st_value != 0 | |
9386 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9387 | { | |
9388 | unsigned long i; | |
854b41e7 | 9389 | |
df22d223 AM |
9390 | if (sym->st_value > toc->rawsize) |
9391 | i = toc->rawsize >> 3; | |
9392 | else | |
9393 | i = sym->st_value >> 3; | |
854b41e7 | 9394 | |
df22d223 AM |
9395 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9396 | { | |
9397 | if (local_toc_syms) | |
9398 | (*_bfd_error_handler) | |
9399 | (_("%s defined on removed toc entry"), | |
9400 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9401 | do | |
9402 | ++i; | |
9403 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9404 | sym->st_value = (bfd_vma) i << 3; | |
9405 | } | |
d62b3684 | 9406 | |
df22d223 AM |
9407 | sym->st_value -= skip[i]; |
9408 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9409 | } | |
c5614fa4 | 9410 | |
854b41e7 | 9411 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9412 | if (toc_inf.global_toc_syms) |
9413 | { | |
9414 | toc_inf.toc = toc; | |
9415 | toc_inf.skip = skip; | |
9416 | toc_inf.global_toc_syms = FALSE; | |
9417 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9418 | &toc_inf); | |
9419 | } | |
854b41e7 AM |
9420 | |
9421 | if (toc->reloc_count != 0) | |
9422 | { | |
d4730f92 | 9423 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9424 | Elf_Internal_Rela *wrel; |
9425 | bfd_size_type sz; | |
9426 | ||
854b41e7 | 9427 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9428 | if (toc_relocs == NULL) |
9429 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9430 | info->keep_memory); | |
9431 | if (toc_relocs == NULL) | |
9432 | goto error_ret; | |
9433 | ||
425b145b AM |
9434 | wrel = toc_relocs; |
9435 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9436 | if ((skip[rel->r_offset >> 3] |
9437 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9438 | { |
9439 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9440 | wrel->r_info = rel->r_info; | |
9441 | wrel->r_addend = rel->r_addend; | |
9442 | ++wrel; | |
9443 | } | |
9444 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9445 | &local_syms, NULL, NULL)) | |
9446 | goto error_ret; | |
9447 | ||
425b145b AM |
9448 | elf_section_data (toc)->relocs = toc_relocs; |
9449 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9450 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9451 | sz = rel_hdr->sh_entsize; | |
9452 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9453 | } |
c5614fa4 | 9454 | } |
28be611c AM |
9455 | else if (toc_relocs != NULL |
9456 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9457 | free (toc_relocs); |
c5614fa4 AM |
9458 | |
9459 | if (local_syms != NULL | |
9460 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9461 | { | |
9462 | if (!info->keep_memory) | |
9463 | free (local_syms); | |
9464 | else | |
9465 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9466 | } | |
9467 | free (skip); | |
9468 | } | |
9469 | ||
9470 | return TRUE; | |
9471 | } | |
9472 | ||
1bbe0902 AM |
9473 | /* Return true iff input section I references the TOC using |
9474 | instructions limited to +/-32k offsets. */ | |
9475 | ||
9476 | bfd_boolean | |
9477 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9478 | { | |
9479 | return (is_ppc64_elf (i->owner) | |
9480 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9481 | } | |
9482 | ||
927be08e AM |
9483 | /* Allocate space for one GOT entry. */ |
9484 | ||
9485 | static void | |
9486 | allocate_got (struct elf_link_hash_entry *h, | |
9487 | struct bfd_link_info *info, | |
9488 | struct got_entry *gent) | |
9489 | { | |
9490 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9491 | bfd_boolean dyn; | |
9492 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9493 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9494 | ? 16 : 8); | |
9495 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9496 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9497 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9498 | ||
9499 | gent->got.offset = got->size; | |
9500 | got->size += entsize; | |
9501 | ||
9502 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9503 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9504 | { |
33e44f2e | 9505 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9506 | htab->got_reli_size += rentsize; |
927be08e | 9507 | } |
0e1862bb | 9508 | else if ((bfd_link_pic (info) |
19e08130 AM |
9509 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
9510 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9511 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9512 | { |
19e08130 | 9513 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9514 | relgot->size += rentsize; |
927be08e AM |
9515 | } |
9516 | } | |
9517 | ||
7865406b AM |
9518 | /* This function merges got entries in the same toc group. */ |
9519 | ||
9520 | static void | |
9521 | merge_got_entries (struct got_entry **pent) | |
9522 | { | |
9523 | struct got_entry *ent, *ent2; | |
9524 | ||
9525 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9526 | if (!ent->is_indirect) | |
9527 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9528 | if (!ent2->is_indirect | |
9529 | && ent2->addend == ent->addend | |
9530 | && ent2->tls_type == ent->tls_type | |
9531 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9532 | { | |
9533 | ent2->is_indirect = TRUE; | |
9534 | ent2->got.ent = ent; | |
9535 | } | |
9536 | } | |
9537 | ||
65f38f15 AM |
9538 | /* Allocate space in .plt, .got and associated reloc sections for |
9539 | dynamic relocs. */ | |
5bd4f169 | 9540 | |
b34976b6 | 9541 | static bfd_boolean |
4ce794b7 | 9542 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9543 | { |
65f38f15 AM |
9544 | struct bfd_link_info *info; |
9545 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9546 | asection *s; |
65f38f15 | 9547 | struct ppc_link_hash_entry *eh; |
6061a67d | 9548 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9549 | struct got_entry **pgent, *gent; |
5bd4f169 | 9550 | |
e92d460e | 9551 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9552 | return TRUE; |
5bd4f169 | 9553 | |
65f38f15 AM |
9554 | info = (struct bfd_link_info *) inf; |
9555 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9556 | if (htab == NULL) |
9557 | return FALSE; | |
5bd4f169 | 9558 | |
951fd09b AM |
9559 | eh = (struct ppc_link_hash_entry *) h; |
9560 | /* Run through the TLS GD got entries first if we're changing them | |
9561 | to TPREL. */ | |
e7b938ca | 9562 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9563 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9564 | if (gent->got.refcount > 0 | |
9565 | && (gent->tls_type & TLS_GD) != 0) | |
9566 | { | |
9567 | /* This was a GD entry that has been converted to TPREL. If | |
9568 | there happens to be a TPREL entry we can use that one. */ | |
9569 | struct got_entry *ent; | |
9570 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9571 | if (ent->got.refcount > 0 | |
9572 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9573 | && ent->addend == gent->addend |
9574 | && ent->owner == gent->owner) | |
951fd09b AM |
9575 | { |
9576 | gent->got.refcount = 0; | |
9577 | break; | |
9578 | } | |
9579 | ||
9580 | /* If not, then we'll be using our own TPREL entry. */ | |
9581 | if (gent->got.refcount != 0) | |
9582 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9583 | } | |
9584 | ||
7865406b AM |
9585 | /* Remove any list entry that won't generate a word in the GOT before |
9586 | we call merge_got_entries. Otherwise we risk merging to empty | |
9587 | entries. */ | |
0b8bcf0d AM |
9588 | pgent = &h->got.glist; |
9589 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9590 | if (gent->got.refcount > 0) |
7865406b AM |
9591 | { |
9592 | if ((gent->tls_type & TLS_LD) != 0 | |
9593 | && !h->def_dynamic) | |
9594 | { | |
9595 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9596 | *pgent = gent->next; | |
9597 | } | |
9598 | else | |
9599 | pgent = &gent->next; | |
9600 | } | |
9601 | else | |
9602 | *pgent = gent->next; | |
9603 | ||
9604 | if (!htab->do_multi_toc) | |
9605 | merge_got_entries (&h->got.glist); | |
9606 | ||
9607 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9608 | if (!gent->is_indirect) | |
411e1bfb AM |
9609 | { |
9610 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9611 | Undefined weak syms won't yet be marked as dynamic, |
9612 | nor will all TLS symbols. */ | |
411e1bfb | 9613 | if (h->dynindx == -1 |
b099ab9f | 9614 | && !h->forced_local |
25f23106 | 9615 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9616 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9617 | { |
c152c796 | 9618 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9619 | return FALSE; |
9620 | } | |
65f38f15 | 9621 | |
0c8d6e5c | 9622 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9623 | abort (); |
0ffa91dd | 9624 | |
927be08e | 9625 | allocate_got (h, info, gent); |
411e1bfb | 9626 | } |
65f38f15 | 9627 | |
57e7d118 AM |
9628 | if (eh->dyn_relocs != NULL |
9629 | && (htab->elf.dynamic_sections_created | |
9630 | || h->type == STT_GNU_IFUNC)) | |
65f38f15 | 9631 | { |
57e7d118 AM |
9632 | /* In the shared -Bsymbolic case, discard space allocated for |
9633 | dynamic pc-relative relocs against symbols which turn out to | |
9634 | be defined in regular objects. For the normal shared case, | |
9635 | discard space for relocs that have become local due to symbol | |
9636 | visibility changes. */ | |
9637 | ||
9638 | if (bfd_link_pic (info)) | |
65f38f15 | 9639 | { |
57e7d118 AM |
9640 | /* Relocs that use pc_count are those that appear on a call |
9641 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9642 | can be generated via assembly. We want calls to | |
9643 | protected symbols to resolve directly to the function | |
9644 | rather than going via the plt. If people want function | |
9645 | pointer comparisons to work as expected then they should | |
9646 | avoid writing weird assembly. */ | |
9647 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9648 | { | |
9649 | struct elf_dyn_relocs **pp; | |
9650 | ||
9651 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
9652 | { | |
9653 | p->count -= p->pc_count; | |
9654 | p->pc_count = 0; | |
9655 | if (p->count == 0) | |
9656 | *pp = p->next; | |
9657 | else | |
9658 | pp = &p->next; | |
9659 | } | |
9660 | } | |
65f38f15 | 9661 | |
57e7d118 AM |
9662 | /* Also discard relocs on undefined weak syms with |
9663 | non-default visibility. */ | |
9664 | if (eh->dyn_relocs != NULL | |
9665 | && h->root.type == bfd_link_hash_undefweak) | |
5bd4f169 | 9666 | { |
57e7d118 AM |
9667 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9668 | eh->dyn_relocs = NULL; | |
9669 | ||
9670 | /* Make sure this symbol is output as a dynamic symbol. | |
9671 | Undefined weak syms won't yet be marked as dynamic. */ | |
9672 | else if (h->dynindx == -1 | |
9673 | && !h->forced_local) | |
9674 | { | |
9675 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9676 | return FALSE; | |
9677 | } | |
5bd4f169 | 9678 | } |
65f38f15 | 9679 | } |
57e7d118 | 9680 | else if (h->type == STT_GNU_IFUNC) |
dfbb6ac9 | 9681 | { |
57e7d118 | 9682 | if (!h->non_got_ref) |
dfbb6ac9 | 9683 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9684 | } |
9685 | else if (ELIMINATE_COPY_RELOCS) | |
9686 | { | |
9687 | /* For the non-shared case, discard space for relocs against | |
9688 | symbols which turn out to need copy relocs or are not | |
9689 | dynamic. */ | |
dfbb6ac9 | 9690 | |
57e7d118 AM |
9691 | if (!h->non_got_ref |
9692 | && !h->def_regular) | |
dfbb6ac9 | 9693 | { |
57e7d118 AM |
9694 | /* Make sure this symbol is output as a dynamic symbol. |
9695 | Undefined weak syms won't yet be marked as dynamic. */ | |
9696 | if (h->dynindx == -1 | |
9697 | && !h->forced_local) | |
9698 | { | |
9699 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9700 | return FALSE; | |
9701 | } | |
9702 | ||
9703 | /* If that succeeded, we know we'll be keeping all the | |
9704 | relocs. */ | |
9705 | if (h->dynindx != -1) | |
9706 | goto keep; | |
dfbb6ac9 | 9707 | } |
57e7d118 AM |
9708 | |
9709 | eh->dyn_relocs = NULL; | |
9710 | ||
9711 | keep: ; | |
9712 | } | |
9713 | ||
9714 | /* Finally, allocate space. */ | |
9715 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9716 | { | |
9717 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9718 | if (eh->elf.type == STT_GNU_IFUNC) | |
9719 | sreloc = htab->elf.irelplt; | |
9720 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9721 | } |
65f38f15 | 9722 | } |
57e7d118 AM |
9723 | |
9724 | if ((htab->elf.dynamic_sections_created | |
9725 | && h->dynindx != -1 | |
9726 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) | |
9727 | || h->type == STT_GNU_IFUNC) | |
65f38f15 | 9728 | { |
57e7d118 AM |
9729 | struct plt_entry *pent; |
9730 | bfd_boolean doneone = FALSE; | |
9731 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9732 | if (pent->plt.refcount > 0) | |
9733 | { | |
9734 | if (!htab->elf.dynamic_sections_created | |
9735 | || h->dynindx == -1) | |
9736 | { | |
9737 | s = htab->elf.iplt; | |
9738 | pent->plt.offset = s->size; | |
9739 | s->size += PLT_ENTRY_SIZE (htab); | |
9740 | s = htab->elf.irelplt; | |
9741 | } | |
9742 | else | |
9743 | { | |
9744 | /* If this is the first .plt entry, make room for the special | |
9745 | first entry. */ | |
9746 | s = htab->elf.splt; | |
9747 | if (s->size == 0) | |
9748 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9749 | |
57e7d118 | 9750 | pent->plt.offset = s->size; |
65f38f15 | 9751 | |
57e7d118 AM |
9752 | /* Make room for this entry. */ |
9753 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9754 | |
57e7d118 AM |
9755 | /* Make room for the .glink code. */ |
9756 | s = htab->glink; | |
9757 | if (s->size == 0) | |
9758 | s->size += GLINK_CALL_STUB_SIZE; | |
9759 | if (htab->opd_abi) | |
9760 | { | |
9761 | /* We need bigger stubs past index 32767. */ | |
9762 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9763 | s->size += 4; | |
9764 | s->size += 2*4; | |
9765 | } | |
9766 | else | |
9767 | s->size += 4; | |
65f38f15 | 9768 | |
57e7d118 AM |
9769 | /* We also need to make an entry in the .rela.plt section. */ |
9770 | s = htab->elf.srelplt; | |
9771 | } | |
9772 | s->size += sizeof (Elf64_External_Rela); | |
9773 | doneone = TRUE; | |
9774 | } | |
9775 | else | |
9776 | pent->plt.offset = (bfd_vma) -1; | |
9777 | if (!doneone) | |
9778 | { | |
9779 | h->plt.plist = NULL; | |
9780 | h->needs_plt = 0; | |
9781 | } | |
65f38f15 | 9782 | } |
57e7d118 | 9783 | else |
65f38f15 | 9784 | { |
57e7d118 AM |
9785 | h->plt.plist = NULL; |
9786 | h->needs_plt = 0; | |
65f38f15 AM |
9787 | } |
9788 | ||
b34976b6 | 9789 | return TRUE; |
65f38f15 AM |
9790 | } |
9791 | ||
a345bc8d AM |
9792 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9793 | to set up space for global entry stubs. These are put in glink, | |
9794 | after the branch table. */ | |
65f38f15 | 9795 | |
b34976b6 | 9796 | static bfd_boolean |
a345bc8d | 9797 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9798 | { |
a345bc8d AM |
9799 | struct bfd_link_info *info; |
9800 | struct ppc_link_hash_table *htab; | |
9801 | struct plt_entry *pent; | |
9802 | asection *s; | |
65f38f15 | 9803 | |
a345bc8d AM |
9804 | if (h->root.type == bfd_link_hash_indirect) |
9805 | return TRUE; | |
65f38f15 | 9806 | |
a345bc8d AM |
9807 | if (!h->pointer_equality_needed) |
9808 | return TRUE; | |
65f38f15 | 9809 | |
a345bc8d AM |
9810 | if (h->def_regular) |
9811 | return TRUE; | |
65f38f15 | 9812 | |
a345bc8d AM |
9813 | info = inf; |
9814 | htab = ppc_hash_table (info); | |
9815 | if (htab == NULL) | |
9816 | return FALSE; | |
9817 | ||
9818 | s = htab->glink; | |
9819 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9820 | if (pent->plt.offset != (bfd_vma) -1 | |
9821 | && pent->addend == 0) | |
9822 | { | |
afe397ea AM |
9823 | /* For ELFv2, if this symbol is not defined in a regular file |
9824 | and we are not generating a shared library or pie, then we | |
9825 | need to define the symbol in the executable on a call stub. | |
9826 | This is to avoid text relocations. */ | |
a345bc8d | 9827 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9828 | h->root.u.def.section = s; |
9829 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9830 | s->size += 16; |
9831 | break; | |
9832 | } | |
9833 | return TRUE; | |
9834 | } | |
9835 | ||
9836 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9837 | read-only sections. */ | |
9838 | ||
9839 | static bfd_boolean | |
9840 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9841 | { | |
9842 | if (h->root.type == bfd_link_hash_indirect) | |
9843 | return TRUE; | |
9844 | ||
9845 | if (readonly_dynrelocs (h)) | |
9846 | { | |
9847 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9848 | ||
9849 | /* Not an error, just cut short the traversal. */ | |
9850 | return FALSE; | |
65f38f15 | 9851 | } |
b34976b6 | 9852 | return TRUE; |
65f38f15 AM |
9853 | } |
9854 | ||
9855 | /* Set the sizes of the dynamic sections. */ | |
9856 | ||
b34976b6 | 9857 | static bfd_boolean |
ee67d69a | 9858 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9859 | struct bfd_link_info *info) |
65f38f15 AM |
9860 | { |
9861 | struct ppc_link_hash_table *htab; | |
9862 | bfd *dynobj; | |
9863 | asection *s; | |
b34976b6 | 9864 | bfd_boolean relocs; |
65f38f15 | 9865 | bfd *ibfd; |
7865406b | 9866 | struct got_entry *first_tlsld; |
65f38f15 AM |
9867 | |
9868 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9869 | if (htab == NULL) |
9870 | return FALSE; | |
9871 | ||
65f38f15 AM |
9872 | dynobj = htab->elf.dynobj; |
9873 | if (dynobj == NULL) | |
9874 | abort (); | |
9875 | ||
9876 | if (htab->elf.dynamic_sections_created) | |
9877 | { | |
9878 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9879 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9880 | { |
3d4d4302 | 9881 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9882 | if (s == NULL) |
9883 | abort (); | |
eea6121a | 9884 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9885 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9886 | } | |
9887 | } | |
9888 | ||
9889 | /* Set up .got offsets for local syms, and space for local dynamic | |
9890 | relocs. */ | |
c72f2fb2 | 9891 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9892 | { |
411e1bfb AM |
9893 | struct got_entry **lgot_ents; |
9894 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9895 | struct plt_entry **local_plt; |
9896 | struct plt_entry **end_local_plt; | |
f961d9dd | 9897 | unsigned char *lgot_masks; |
65f38f15 AM |
9898 | bfd_size_type locsymcount; |
9899 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9900 | |
0c8d6e5c | 9901 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9902 | continue; |
9903 | ||
9904 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9905 | { | |
19e08130 | 9906 | struct ppc_dyn_relocs *p; |
65f38f15 | 9907 | |
6edfbbad | 9908 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9909 | { |
ec338859 AM |
9910 | if (!bfd_is_abs_section (p->sec) |
9911 | && bfd_is_abs_section (p->sec->output_section)) | |
9912 | { | |
9913 | /* Input section has been discarded, either because | |
9914 | it is a copy of a linkonce section or due to | |
9915 | linker script /DISCARD/, so we'll be discarding | |
9916 | the relocs too. */ | |
9917 | } | |
248866a8 | 9918 | else if (p->count != 0) |
ec338859 | 9919 | { |
19e08130 AM |
9920 | asection *srel = elf_section_data (p->sec)->sreloc; |
9921 | if (p->ifunc) | |
33e44f2e | 9922 | srel = htab->elf.irelplt; |
eea6121a | 9923 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9924 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9925 | info->flags |= DF_TEXTREL; | |
ec338859 | 9926 | } |
65f38f15 AM |
9927 | } |
9928 | } | |
9929 | ||
411e1bfb AM |
9930 | lgot_ents = elf_local_got_ents (ibfd); |
9931 | if (!lgot_ents) | |
65f38f15 AM |
9932 | continue; |
9933 | ||
0ffa91dd | 9934 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9935 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9936 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9937 | local_plt = (struct plt_entry **) end_lgot_ents; |
9938 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9939 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9940 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9941 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9942 | { |
0b8bcf0d | 9943 | struct got_entry **pent, *ent; |
411e1bfb | 9944 | |
0b8bcf0d AM |
9945 | pent = lgot_ents; |
9946 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9947 | if (ent->got.refcount > 0) |
9948 | { | |
e7b938ca | 9949 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9950 | { |
927be08e | 9951 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9952 | *pent = ent->next; |
411e1bfb AM |
9953 | } |
9954 | else | |
9955 | { | |
19e08130 AM |
9956 | unsigned int ent_size = 8; |
9957 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9958 | ||
eea6121a | 9959 | ent->got.offset = s->size; |
e7b938ca | 9960 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9961 | { |
19e08130 AM |
9962 | ent_size *= 2; |
9963 | rel_size *= 2; | |
9964 | } | |
9965 | s->size += ent_size; | |
9966 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9967 | { | |
33e44f2e | 9968 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9969 | htab->got_reli_size += rel_size; |
9970 | } | |
0e1862bb | 9971 | else if (bfd_link_pic (info)) |
19e08130 AM |
9972 | { |
9973 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9974 | srel->size += rel_size; | |
927be08e | 9975 | } |
0b8bcf0d | 9976 | pent = &ent->next; |
411e1bfb AM |
9977 | } |
9978 | } | |
9979 | else | |
0b8bcf0d | 9980 | *pent = ent->next; |
65f38f15 | 9981 | } |
e054468f AM |
9982 | |
9983 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9984 | for (; local_plt < end_local_plt; ++local_plt) | |
9985 | { | |
9986 | struct plt_entry *ent; | |
9987 | ||
9988 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9989 | if (ent->plt.refcount > 0) | |
9990 | { | |
33e44f2e | 9991 | s = htab->elf.iplt; |
e054468f | 9992 | ent->plt.offset = s->size; |
b9e5796b | 9993 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9994 | |
33e44f2e | 9995 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9996 | } |
9997 | else | |
9998 | ent->plt.offset = (bfd_vma) -1; | |
9999 | } | |
65f38f15 AM |
10000 | } |
10001 | ||
10002 | /* Allocate global sym .plt and .got entries, and space for global | |
10003 | sym dynamic relocs. */ | |
4ce794b7 | 10004 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
10005 | /* Stash the end of glink branch table. */ |
10006 | if (htab->glink != NULL) | |
10007 | htab->glink->rawsize = htab->glink->size; | |
10008 | ||
0e1862bb | 10009 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10010 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10011 | |
7865406b | 10012 | first_tlsld = NULL; |
c72f2fb2 | 10013 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10014 | { |
7865406b AM |
10015 | struct got_entry *ent; |
10016 | ||
0c8d6e5c | 10017 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10018 | continue; |
10019 | ||
7865406b AM |
10020 | ent = ppc64_tlsld_got (ibfd); |
10021 | if (ent->got.refcount > 0) | |
102890f0 | 10022 | { |
7865406b | 10023 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10024 | { |
7865406b AM |
10025 | ent->is_indirect = TRUE; |
10026 | ent->got.ent = first_tlsld; | |
10027 | } | |
10028 | else | |
10029 | { | |
10030 | if (first_tlsld == NULL) | |
10031 | first_tlsld = ent; | |
10032 | s = ppc64_elf_tdata (ibfd)->got; | |
10033 | ent->got.offset = s->size; | |
10034 | ent->owner = ibfd; | |
10035 | s->size += 16; | |
0e1862bb | 10036 | if (bfd_link_pic (info)) |
7865406b AM |
10037 | { |
10038 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10039 | srel->size += sizeof (Elf64_External_Rela); | |
10040 | } | |
102890f0 AM |
10041 | } |
10042 | } | |
10043 | else | |
7865406b | 10044 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10045 | } |
10046 | ||
65f38f15 AM |
10047 | /* We now have determined the sizes of the various dynamic sections. |
10048 | Allocate memory for them. */ | |
b34976b6 | 10049 | relocs = FALSE; |
65f38f15 AM |
10050 | for (s = dynobj->sections; s != NULL; s = s->next) |
10051 | { | |
10052 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10053 | continue; | |
10054 | ||
4ce794b7 | 10055 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10056 | /* These haven't been allocated yet; don't strip. */ |
10057 | continue; | |
33e44f2e AM |
10058 | else if (s == htab->elf.sgot |
10059 | || s == htab->elf.splt | |
10060 | || s == htab->elf.iplt | |
c456f082 AM |
10061 | || s == htab->glink |
10062 | || s == htab->dynbss) | |
65f38f15 AM |
10063 | { |
10064 | /* Strip this section if we don't need it; see the | |
10065 | comment below. */ | |
5bd4f169 | 10066 | } |
58d180e8 AM |
10067 | else if (s == htab->glink_eh_frame) |
10068 | { | |
10069 | if (!bfd_is_abs_section (s->output_section)) | |
10070 | /* Not sized yet. */ | |
10071 | continue; | |
10072 | } | |
70cc837d | 10073 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10074 | { |
c456f082 | 10075 | if (s->size != 0) |
5bd4f169 | 10076 | { |
33e44f2e | 10077 | if (s != htab->elf.srelplt) |
b34976b6 | 10078 | relocs = TRUE; |
5bd4f169 AM |
10079 | |
10080 | /* We use the reloc_count field as a counter if we need | |
10081 | to copy relocs into the output file. */ | |
10082 | s->reloc_count = 0; | |
10083 | } | |
10084 | } | |
65f38f15 | 10085 | else |
5bd4f169 AM |
10086 | { |
10087 | /* It's not one of our sections, so don't allocate space. */ | |
10088 | continue; | |
10089 | } | |
10090 | ||
eea6121a | 10091 | if (s->size == 0) |
5bd4f169 | 10092 | { |
c456f082 AM |
10093 | /* If we don't need this section, strip it from the |
10094 | output file. This is mostly to handle .rela.bss and | |
10095 | .rela.plt. We must create both sections in | |
10096 | create_dynamic_sections, because they must be created | |
10097 | before the linker maps input sections to output | |
10098 | sections. The linker does that before | |
10099 | adjust_dynamic_symbol is called, and it is that | |
10100 | function which decides whether anything needs to go | |
10101 | into these sections. */ | |
8423293d | 10102 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10103 | continue; |
10104 | } | |
10105 | ||
c456f082 | 10106 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10107 | continue; |
10108 | ||
65f38f15 AM |
10109 | /* Allocate memory for the section contents. We use bfd_zalloc |
10110 | here in case unused entries are not reclaimed before the | |
10111 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10112 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10113 | sections instead of garbage. | |
10114 | We also rely on the section contents being zero when writing | |
10115 | the GOT. */ | |
eea6121a | 10116 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10117 | if (s->contents == NULL) |
b34976b6 | 10118 | return FALSE; |
5bd4f169 AM |
10119 | } |
10120 | ||
c72f2fb2 | 10121 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10122 | { |
0c8d6e5c | 10123 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10124 | continue; |
10125 | ||
e717da7e | 10126 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10127 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10128 | { |
eea6121a | 10129 | if (s->size == 0) |
8423293d | 10130 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10131 | else |
10132 | { | |
eea6121a | 10133 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10134 | if (s->contents == NULL) |
10135 | return FALSE; | |
10136 | } | |
10137 | } | |
10138 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10139 | if (s != NULL) | |
10140 | { | |
eea6121a | 10141 | if (s->size == 0) |
8423293d | 10142 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10143 | else |
10144 | { | |
eea6121a | 10145 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10146 | if (s->contents == NULL) |
10147 | return FALSE; | |
10148 | relocs = TRUE; | |
10149 | s->reloc_count = 0; | |
10150 | } | |
10151 | } | |
10152 | } | |
10153 | ||
e86ce104 | 10154 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10155 | { |
e8910a83 AM |
10156 | bfd_boolean tls_opt; |
10157 | ||
5bd4f169 AM |
10158 | /* Add some entries to the .dynamic section. We fill in the |
10159 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10160 | must add the entries now so that we get the correct size for | |
10161 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10162 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10163 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10164 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10165 | |
0e1862bb | 10166 | if (bfd_link_executable (info)) |
5bd4f169 | 10167 | { |
dc810e39 | 10168 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10169 | return FALSE; |
5bd4f169 AM |
10170 | } |
10171 | ||
33e44f2e | 10172 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10173 | { |
dc810e39 AM |
10174 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10175 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10176 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10177 | || !add_dynamic_entry (DT_JMPREL, 0) |
10178 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10179 | return FALSE; |
5bd4f169 AM |
10180 | } |
10181 | ||
ee67d69a | 10182 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10183 | { |
10184 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10185 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10186 | return FALSE; |
19397422 AM |
10187 | } |
10188 | ||
7c9cf415 | 10189 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10190 | && htab->tls_get_addr_fd != NULL |
10191 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10192 | if (tls_opt || !htab->opd_abi) | |
10193 | { | |
10194 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10195 | return FALSE; | |
10196 | } | |
a7f2871e | 10197 | |
5bd4f169 AM |
10198 | if (relocs) |
10199 | { | |
dc810e39 AM |
10200 | if (!add_dynamic_entry (DT_RELA, 0) |
10201 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10202 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10203 | return FALSE; |
5bd4f169 | 10204 | |
65f38f15 AM |
10205 | /* If any dynamic relocs apply to a read-only section, |
10206 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10207 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10208 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10209 | |
65f38f15 | 10210 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10211 | { |
65f38f15 | 10212 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10213 | return FALSE; |
5bd4f169 | 10214 | } |
5bd4f169 | 10215 | } |
5bd4f169 | 10216 | } |
65f38f15 | 10217 | #undef add_dynamic_entry |
5bd4f169 | 10218 | |
b34976b6 | 10219 | return TRUE; |
5bd4f169 AM |
10220 | } |
10221 | ||
a345bc8d AM |
10222 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10223 | ||
10224 | static bfd_boolean | |
10225 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10226 | { | |
10227 | if (h->plt.plist != NULL | |
10228 | && !h->def_regular | |
10229 | && !h->pointer_equality_needed) | |
10230 | return FALSE; | |
10231 | ||
10232 | return _bfd_elf_hash_symbol (h); | |
10233 | } | |
10234 | ||
721956f4 | 10235 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10236 | |
4ce794b7 AM |
10237 | static inline enum ppc_stub_type |
10238 | ppc_type_of_stub (asection *input_sec, | |
10239 | const Elf_Internal_Rela *rel, | |
10240 | struct ppc_link_hash_entry **hash, | |
e054468f | 10241 | struct plt_entry **plt_ent, |
6911b7dc AM |
10242 | bfd_vma destination, |
10243 | unsigned long local_off) | |
5bd4f169 | 10244 | { |
721956f4 AM |
10245 | struct ppc_link_hash_entry *h = *hash; |
10246 | bfd_vma location; | |
10247 | bfd_vma branch_offset; | |
10248 | bfd_vma max_branch_offset; | |
4ce794b7 | 10249 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10250 | |
721956f4 AM |
10251 | if (h != NULL) |
10252 | { | |
e054468f | 10253 | struct plt_entry *ent; |
7fe2b9a6 | 10254 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10255 | if (h->oh != NULL |
10256 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10257 | { |
10258 | fdh = ppc_follow_link (h->oh); | |
10259 | *hash = fdh; | |
10260 | } | |
8387904d | 10261 | |
e054468f AM |
10262 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10263 | if (ent->addend == rel->r_addend | |
10264 | && ent->plt.offset != (bfd_vma) -1) | |
10265 | { | |
e054468f AM |
10266 | *plt_ent = ent; |
10267 | return ppc_stub_plt_call; | |
10268 | } | |
5bd4f169 | 10269 | |
7fe2b9a6 AM |
10270 | /* Here, we know we don't have a plt entry. If we don't have a |
10271 | either a defined function descriptor or a defined entry symbol | |
10272 | in a regular object file, then it is pointless trying to make | |
10273 | any other type of stub. */ | |
854b41e7 AM |
10274 | if (!is_static_defined (&fdh->elf) |
10275 | && !is_static_defined (&h->elf)) | |
721956f4 | 10276 | return ppc_stub_none; |
5d1634d7 | 10277 | } |
e054468f AM |
10278 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10279 | { | |
10280 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10281 | struct plt_entry **local_plt = (struct plt_entry **) | |
10282 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10283 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10284 | ||
10285 | if (local_plt[r_symndx] != NULL) | |
10286 | { | |
10287 | struct plt_entry *ent; | |
10288 | ||
10289 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10290 | if (ent->addend == rel->r_addend | |
10291 | && ent->plt.offset != (bfd_vma) -1) | |
10292 | { | |
10293 | *plt_ent = ent; | |
10294 | return ppc_stub_plt_call; | |
10295 | } | |
10296 | } | |
10297 | } | |
5d1634d7 | 10298 | |
721956f4 AM |
10299 | /* Determine where the call point is. */ |
10300 | location = (input_sec->output_offset | |
10301 | + input_sec->output_section->vma | |
10302 | + rel->r_offset); | |
5d1634d7 | 10303 | |
721956f4 AM |
10304 | branch_offset = destination - location; |
10305 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10306 | |
721956f4 AM |
10307 | /* Determine if a long branch stub is needed. */ |
10308 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10309 | if (r_type != R_PPC64_REL24) |
721956f4 | 10310 | max_branch_offset = 1 << 15; |
5d1634d7 | 10311 | |
6911b7dc | 10312 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10313 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10314 | is needed later. */ | |
10315 | return ppc_stub_long_branch; | |
5d1634d7 | 10316 | |
721956f4 | 10317 | return ppc_stub_none; |
5d1634d7 AM |
10318 | } |
10319 | ||
794e51c0 AM |
10320 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10321 | to update a plt entry in one thread and have another thread see a | |
10322 | stale zero toc entry. To avoid this we need some sort of acquire | |
10323 | barrier in the call stub. One solution is to make the load of the | |
10324 | toc word seem to appear to depend on the load of the function entry | |
10325 | word. Another solution is to test for r2 being zero, and branch to | |
10326 | the appropriate glink entry if so. | |
10327 | ||
10328 | . fake dep barrier compare | |
71a39c98 AM |
10329 | . ld 12,xxx(2) ld 12,xxx(2) |
10330 | . mtctr 12 mtctr 12 | |
10331 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10332 | . add 2,2,11 cmpldi 2,0 |
10333 | . ld 2,xxx+8(2) bnectr+ | |
10334 | . bctr b <glink_entry> | |
10335 | ||
10336 | The solution involving the compare turns out to be faster, so | |
10337 | that's what we use unless the branch won't reach. */ | |
10338 | ||
10339 | #define ALWAYS_USE_FAKE_DEP 0 | |
10340 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10341 | |
5d1634d7 AM |
10342 | #define PPC_LO(v) ((v) & 0xffff) |
10343 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10344 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10345 | ||
794e51c0 AM |
10346 | static inline unsigned int |
10347 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10348 | struct ppc_stub_hash_entry *stub_entry, | |
10349 | bfd_vma off) | |
10350 | { | |
b9e5796b AM |
10351 | unsigned size = 12; |
10352 | ||
10353 | if (ALWAYS_EMIT_R2SAVE | |
10354 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10355 | size += 4; | |
10356 | if (PPC_HA (off) != 0) | |
794e51c0 | 10357 | size += 4; |
b9e5796b AM |
10358 | if (htab->opd_abi) |
10359 | { | |
10360 | size += 4; | |
e7d1c40c | 10361 | if (htab->params->plt_static_chain) |
b9e5796b | 10362 | size += 4; |
bd4d2eaa AM |
10363 | if (htab->params->plt_thread_safe |
10364 | && htab->elf.dynamic_sections_created | |
10365 | && stub_entry->h != NULL | |
10366 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10367 | size += 8; |
e7d1c40c | 10368 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10369 | size += 4; |
10370 | } | |
794e51c0 AM |
10371 | if (stub_entry->h != NULL |
10372 | && (stub_entry->h == htab->tls_get_addr_fd | |
10373 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10374 | && htab->params->tls_get_addr_opt) |
794e51c0 AM |
10375 | size += 13 * 4; |
10376 | return size; | |
10377 | } | |
10378 | ||
10379 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10380 | then return the padding needed to do so. */ | |
10381 | static inline unsigned int | |
10382 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10383 | struct ppc_stub_hash_entry *stub_entry, | |
10384 | bfd_vma plt_off) | |
10385 | { | |
e7d1c40c | 10386 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 | 10387 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10388 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 AM |
10389 | |
10390 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
e05fa0ba | 10391 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10392 | return stub_align - (stub_off & (stub_align - 1)); |
10393 | return 0; | |
10394 | } | |
10395 | ||
10396 | /* Build a .plt call stub. */ | |
10397 | ||
10398 | static inline bfd_byte * | |
10399 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10400 | struct ppc_stub_hash_entry *stub_entry, | |
10401 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10402 | { | |
e7d1c40c | 10403 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10404 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10405 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10406 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10407 | && htab->elf.dynamic_sections_created | |
10408 | && stub_entry->h != NULL | |
10409 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10410 | bfd_boolean use_fake_dep = plt_thread_safe; |
10411 | bfd_vma cmp_branch_off = 0; | |
10412 | ||
10413 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10414 | && plt_load_toc |
794e51c0 | 10415 | && plt_thread_safe |
bd4d2eaa AM |
10416 | && !((stub_entry->h == htab->tls_get_addr_fd |
10417 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10418 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10419 | { |
10420 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10421 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10422 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10423 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10424 | bfd_vma to, from; | |
10425 | ||
68d62958 AM |
10426 | if (pltindex > 32768) |
10427 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10428 | to = (glinkoff |
10429 | + htab->glink->output_offset | |
10430 | + htab->glink->output_section->vma); | |
6f20ed8a | 10431 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10432 | + 4 * (ALWAYS_EMIT_R2SAVE |
10433 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10434 | + 4 * (PPC_HA (offset) != 0) | |
10435 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10436 | != PPC_HA (offset)) | |
10437 | + 4 * (plt_static_chain != 0) | |
10438 | + 20 | |
6f20ed8a AM |
10439 | + stub_entry->group->stub_sec->output_offset |
10440 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10441 | cmp_branch_off = to - from; |
10442 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10443 | } | |
10444 | ||
ac2df442 AM |
10445 | if (PPC_HA (offset) != 0) |
10446 | { | |
176a0d42 AM |
10447 | if (r != NULL) |
10448 | { | |
794e51c0 AM |
10449 | if (ALWAYS_EMIT_R2SAVE |
10450 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10451 | r[0].r_offset += 4; | |
176a0d42 | 10452 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10453 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10454 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10455 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10456 | if (plt_load_toc) |
176a0d42 | 10457 | { |
b9e5796b | 10458 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10459 | { |
b9e5796b AM |
10460 | r[2].r_offset = r[1].r_offset + 4; |
10461 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10462 | r[2].r_addend = r[0].r_addend; | |
10463 | } | |
10464 | else | |
10465 | { | |
10466 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10467 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10468 | r[2].r_addend = r[0].r_addend + 8; | |
10469 | if (plt_static_chain) | |
10470 | { | |
10471 | r[3].r_offset = r[2].r_offset + 4; | |
10472 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10473 | r[3].r_addend = r[0].r_addend + 16; | |
10474 | } | |
c7131b65 | 10475 | } |
176a0d42 AM |
10476 | } |
10477 | } | |
794e51c0 AM |
10478 | if (ALWAYS_EMIT_R2SAVE |
10479 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10480 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10481 | if (plt_load_toc) |
10482 | { | |
10483 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10484 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10485 | } | |
10486 | else | |
10487 | { | |
10488 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10489 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10490 | } | |
b9e5796b AM |
10491 | if (plt_load_toc |
10492 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10493 | { |
71a39c98 | 10494 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10495 | offset = 0; |
10496 | } | |
71a39c98 | 10497 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10498 | if (plt_load_toc) |
794e51c0 | 10499 | { |
b9e5796b AM |
10500 | if (use_fake_dep) |
10501 | { | |
10502 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10503 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10504 | } | |
10505 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10506 | if (plt_static_chain) | |
10507 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10508 | } |
ac2df442 AM |
10509 | } |
10510 | else | |
10511 | { | |
176a0d42 AM |
10512 | if (r != NULL) |
10513 | { | |
794e51c0 AM |
10514 | if (ALWAYS_EMIT_R2SAVE |
10515 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10516 | r[0].r_offset += 4; | |
176a0d42 | 10517 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10518 | if (plt_load_toc) |
176a0d42 | 10519 | { |
b9e5796b | 10520 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10521 | { |
b9e5796b AM |
10522 | r[1].r_offset = r[0].r_offset + 4; |
10523 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10524 | r[1].r_addend = r[0].r_addend; | |
10525 | } | |
10526 | else | |
10527 | { | |
10528 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10529 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10530 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10531 | if (plt_static_chain) | |
10532 | { | |
10533 | r[2].r_offset = r[1].r_offset + 4; | |
10534 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10535 | r[2].r_addend = r[0].r_addend + 8; | |
10536 | } | |
c7131b65 | 10537 | } |
176a0d42 AM |
10538 | } |
10539 | } | |
794e51c0 AM |
10540 | if (ALWAYS_EMIT_R2SAVE |
10541 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10542 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10543 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10544 | if (plt_load_toc |
10545 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10546 | { |
10547 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10548 | offset = 0; | |
10549 | } | |
71a39c98 | 10550 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10551 | if (plt_load_toc) |
794e51c0 | 10552 | { |
b9e5796b AM |
10553 | if (use_fake_dep) |
10554 | { | |
10555 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10556 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10557 | } | |
10558 | if (plt_static_chain) | |
10559 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10560 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10561 | } |
ac2df442 | 10562 | } |
b9e5796b | 10563 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10564 | { |
10565 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10566 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10567 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10568 | } |
10569 | else | |
10570 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10571 | return p; |
10572 | } | |
10573 | ||
a7f2871e AM |
10574 | /* Build a special .plt call stub for __tls_get_addr. */ |
10575 | ||
10576 | #define LD_R11_0R3 0xe9630000 | |
10577 | #define LD_R12_0R3 0xe9830000 | |
10578 | #define MR_R0_R3 0x7c601b78 | |
10579 | #define CMPDI_R11_0 0x2c2b0000 | |
10580 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10581 | #define BEQLR 0x4d820020 | |
10582 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10583 | #define STD_R11_0R1 0xf9610000 |
10584 | #define BCTRL 0x4e800421 | |
10585 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10586 | #define MTLR_R11 0x7d6803a6 |
10587 | ||
10588 | static inline bfd_byte * | |
794e51c0 AM |
10589 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10590 | struct ppc_stub_hash_entry *stub_entry, | |
10591 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10592 | { |
e7d1c40c | 10593 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10594 | |
a7f2871e AM |
10595 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10596 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10597 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10598 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10599 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10600 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10601 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10602 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10603 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10604 | |
10605 | if (r != NULL) | |
10606 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10607 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10608 | bfd_put_32 (obfd, BCTRL, p - 4); |
10609 | ||
a078d95a | 10610 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10611 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10612 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10613 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10614 | ||
10615 | return p; | |
10616 | } | |
10617 | ||
176a0d42 AM |
10618 | static Elf_Internal_Rela * |
10619 | get_relocs (asection *sec, int count) | |
10620 | { | |
10621 | Elf_Internal_Rela *relocs; | |
10622 | struct bfd_elf_section_data *elfsec_data; | |
10623 | ||
10624 | elfsec_data = elf_section_data (sec); | |
10625 | relocs = elfsec_data->relocs; | |
10626 | if (relocs == NULL) | |
10627 | { | |
10628 | bfd_size_type relsize; | |
10629 | relsize = sec->reloc_count * sizeof (*relocs); | |
10630 | relocs = bfd_alloc (sec->owner, relsize); | |
10631 | if (relocs == NULL) | |
10632 | return NULL; | |
10633 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10634 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10635 | sizeof (Elf_Internal_Shdr)); | |
10636 | if (elfsec_data->rela.hdr == NULL) | |
10637 | return NULL; | |
10638 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10639 | * sizeof (Elf64_External_Rela)); | |
10640 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10641 | sec->reloc_count = 0; |
10642 | } | |
10643 | relocs += sec->reloc_count; | |
10644 | sec->reloc_count += count; | |
10645 | return relocs; | |
10646 | } | |
10647 | ||
aa374f67 | 10648 | static bfd_vma |
25f53a85 | 10649 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10650 | struct ppc_stub_hash_entry *stub_entry) |
10651 | { | |
25f53a85 | 10652 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10653 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10654 | |
10655 | if (r2off == 0) | |
10656 | { | |
10657 | /* Support linking -R objects. Get the toc pointer from the | |
10658 | opd entry. */ | |
10659 | char buf[8]; | |
b9e5796b AM |
10660 | if (!htab->opd_abi) |
10661 | return r2off; | |
aa374f67 AM |
10662 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10663 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10664 | ||
10665 | if (strcmp (opd->name, ".opd") != 0 | |
10666 | || opd->reloc_count != 0) | |
10667 | { | |
bc30df16 | 10668 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10669 | stub_entry->h->elf.root.root.string); |
aa374f67 | 10670 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10671 | return (bfd_vma) -1; |
aa374f67 AM |
10672 | } |
10673 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10674 | return (bfd_vma) -1; |
aa374f67 | 10675 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10676 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10677 | } |
6f20ed8a | 10678 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10679 | return r2off; |
10680 | } | |
10681 | ||
b34976b6 | 10682 | static bfd_boolean |
4ce794b7 | 10683 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10684 | { |
721956f4 AM |
10685 | struct ppc_stub_hash_entry *stub_entry; |
10686 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10687 | struct bfd_link_info *info; |
10688 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10689 | bfd_byte *loc; |
10690 | bfd_byte *p; | |
ee75fd95 | 10691 | bfd_vma dest, off; |
721956f4 | 10692 | int size; |
176a0d42 | 10693 | Elf_Internal_Rela *r; |
e054468f | 10694 | asection *plt; |
5d1634d7 | 10695 | |
721956f4 AM |
10696 | /* Massage our args to the form they really have. */ |
10697 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10698 | info = in_arg; |
5d1634d7 | 10699 | |
5d1634d7 | 10700 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10701 | if (htab == NULL) |
10702 | return FALSE; | |
5d1634d7 | 10703 | |
721956f4 | 10704 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
10705 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
10706 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 10707 | |
4ce794b7 | 10708 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10709 | switch (stub_entry->stub_type) |
5d1634d7 | 10710 | { |
721956f4 | 10711 | case ppc_stub_long_branch: |
ad8e1ba5 | 10712 | case ppc_stub_long_branch_r2off: |
721956f4 | 10713 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10714 | dest = (stub_entry->target_value |
10715 | + stub_entry->target_section->output_offset | |
10716 | + stub_entry->target_section->output_section->vma); | |
10717 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10718 | off = dest; | |
5d1634d7 | 10719 | |
721956f4 AM |
10720 | /* And this is where we are coming from. */ |
10721 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
10722 | + stub_entry->group->stub_sec->output_offset |
10723 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 10724 | |
ac2df442 AM |
10725 | size = 4; |
10726 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10727 | { |
25f53a85 | 10728 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10729 | |
a7c49797 | 10730 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10731 | { |
10732 | htab->stub_error = TRUE; | |
10733 | return FALSE; | |
10734 | } | |
e7d1c40c | 10735 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10736 | loc += 4; |
a7c49797 | 10737 | size = 8; |
ac2df442 AM |
10738 | if (PPC_HA (r2off) != 0) |
10739 | { | |
e7d1c40c AM |
10740 | bfd_put_32 (htab->params->stub_bfd, |
10741 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 | 10742 | loc += 4; |
a7c49797 AM |
10743 | size += 4; |
10744 | } | |
10745 | if (PPC_LO (r2off) != 0) | |
10746 | { | |
10747 | bfd_put_32 (htab->params->stub_bfd, | |
10748 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
10749 | loc += 4; | |
10750 | size += 4; | |
ac2df442 | 10751 | } |
ac2df442 | 10752 | off -= size - 4; |
ad8e1ba5 | 10753 | } |
e7d1c40c | 10754 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10755 | |
5c3dead3 AM |
10756 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10757 | { | |
bc30df16 AM |
10758 | info->callbacks->einfo |
10759 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10760 | stub_entry->root.string); | |
5c3dead3 AM |
10761 | htab->stub_error = TRUE; |
10762 | return FALSE; | |
10763 | } | |
ee75fd95 AM |
10764 | |
10765 | if (info->emitrelocations) | |
10766 | { | |
6f20ed8a | 10767 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10768 | if (r == NULL) |
10769 | return FALSE; | |
6f20ed8a | 10770 | r->r_offset = loc - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
10771 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
10772 | r->r_addend = dest; | |
10773 | if (stub_entry->h != NULL) | |
10774 | { | |
10775 | struct elf_link_hash_entry **hashes; | |
10776 | unsigned long symndx; | |
10777 | struct ppc_link_hash_entry *h; | |
10778 | ||
e7d1c40c | 10779 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10780 | if (hashes == NULL) |
10781 | { | |
10782 | bfd_size_type hsize; | |
10783 | ||
10784 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10785 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10786 | if (hashes == NULL) |
10787 | return FALSE; | |
e7d1c40c | 10788 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10789 | htab->stub_globals = 1; |
10790 | } | |
10791 | symndx = htab->stub_globals++; | |
10792 | h = stub_entry->h; | |
10793 | hashes[symndx] = &h->elf; | |
10794 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10795 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10796 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10797 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10798 | /* H is an opd symbol. The addend must be zero. */ | |
10799 | r->r_addend = 0; | |
10800 | else | |
10801 | { | |
10802 | off = (h->elf.root.u.def.value | |
10803 | + h->elf.root.u.def.section->output_offset | |
10804 | + h->elf.root.u.def.section->output_section->vma); | |
10805 | r->r_addend -= off; | |
10806 | } | |
10807 | } | |
10808 | } | |
721956f4 | 10809 | break; |
e86ce104 | 10810 | |
721956f4 | 10811 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10812 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10813 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10814 | stub_entry->root.string + 9, | |
b34976b6 | 10815 | FALSE, FALSE); |
721956f4 AM |
10816 | if (br_entry == NULL) |
10817 | { | |
8de848d8 | 10818 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10819 | stub_entry->root.string); |
b34976b6 AM |
10820 | htab->stub_error = TRUE; |
10821 | return FALSE; | |
721956f4 AM |
10822 | } |
10823 | ||
176a0d42 AM |
10824 | dest = (stub_entry->target_value |
10825 | + stub_entry->target_section->output_offset | |
10826 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10827 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10828 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10829 | |
176a0d42 | 10830 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10831 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10832 | |
f94498ff | 10833 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10834 | { |
f94498ff | 10835 | br_entry->iter = 0; |
84f5d08e | 10836 | |
f94498ff | 10837 | if (htab->relbrlt != NULL) |
84f5d08e | 10838 | { |
f94498ff AM |
10839 | /* Create a reloc for the branch lookup table entry. */ |
10840 | Elf_Internal_Rela rela; | |
10841 | bfd_byte *rl; | |
10842 | ||
10843 | rela.r_offset = (br_entry->offset | |
10844 | + htab->brlt->output_offset | |
10845 | + htab->brlt->output_section->vma); | |
10846 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10847 | rela.r_addend = dest; |
f94498ff AM |
10848 | |
10849 | rl = htab->relbrlt->contents; | |
10850 | rl += (htab->relbrlt->reloc_count++ | |
10851 | * sizeof (Elf64_External_Rela)); | |
10852 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10853 | } | |
10854 | else if (info->emitrelocations) | |
10855 | { | |
176a0d42 AM |
10856 | r = get_relocs (htab->brlt, 1); |
10857 | if (r == NULL) | |
10858 | return FALSE; | |
10859 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10860 | normal reloc processing. Symbols and offsets are not | |
10861 | translated from input file to output file form, so | |
10862 | set up the offset per the output file. */ | |
f94498ff AM |
10863 | r->r_offset = (br_entry->offset |
10864 | + htab->brlt->output_offset | |
10865 | + htab->brlt->output_section->vma); | |
10866 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10867 | r->r_addend = dest; |
84f5d08e | 10868 | } |
84f5d08e | 10869 | } |
721956f4 | 10870 | |
176a0d42 AM |
10871 | dest = (br_entry->offset |
10872 | + htab->brlt->output_offset | |
10873 | + htab->brlt->output_section->vma); | |
10874 | ||
10875 | off = (dest | |
4ce794b7 | 10876 | - elf_gp (htab->brlt->output_section->owner) |
6f20ed8a | 10877 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 10878 | |
ad8e1ba5 | 10879 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10880 | { |
25f53a85 | 10881 | info->callbacks->einfo |
bc30df16 | 10882 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10883 | stub_entry->root.string); |
5d1634d7 | 10884 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10885 | htab->stub_error = TRUE; |
10886 | return FALSE; | |
5d1634d7 | 10887 | } |
41bd81ab | 10888 | |
176a0d42 AM |
10889 | if (info->emitrelocations) |
10890 | { | |
6f20ed8a | 10891 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10892 | if (r == NULL) |
10893 | return FALSE; | |
6f20ed8a | 10894 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10895 | if (bfd_big_endian (info->output_bfd)) |
10896 | r[0].r_offset += 2; | |
00f412ee | 10897 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10898 | r[0].r_offset += 4; |
10899 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10900 | r[0].r_addend = dest; | |
10901 | if (PPC_HA (off) != 0) | |
10902 | { | |
10903 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10904 | r[1].r_offset = r[0].r_offset + 4; | |
10905 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10906 | r[1].r_addend = r[0].r_addend; | |
10907 | } | |
10908 | } | |
10909 | ||
00f412ee | 10910 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10911 | { |
176a0d42 | 10912 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10913 | { |
10914 | size = 16; | |
e7d1c40c | 10915 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10916 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10917 | loc += 4; |
e7d1c40c | 10918 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10919 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10920 | } |
10921 | else | |
10922 | { | |
10923 | size = 12; | |
e7d1c40c AM |
10924 | bfd_put_32 (htab->params->stub_bfd, |
10925 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10926 | } |
ad8e1ba5 AM |
10927 | } |
10928 | else | |
10929 | { | |
25f53a85 | 10930 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10931 | |
a7c49797 | 10932 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10933 | { |
10934 | htab->stub_error = TRUE; | |
10935 | return FALSE; | |
10936 | } | |
ad8e1ba5 | 10937 | |
e7d1c40c | 10938 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10939 | loc += 4; |
00f412ee | 10940 | size = 16; |
176a0d42 | 10941 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10942 | { |
10943 | size += 4; | |
e7d1c40c | 10944 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10945 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10946 | loc += 4; |
e7d1c40c | 10947 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10948 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10949 | } |
10950 | else | |
e7d1c40c | 10951 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10952 | |
10953 | if (PPC_HA (r2off) != 0) | |
10954 | { | |
10955 | size += 4; | |
00f412ee | 10956 | loc += 4; |
e7d1c40c AM |
10957 | bfd_put_32 (htab->params->stub_bfd, |
10958 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10959 | } |
10960 | if (PPC_LO (r2off) != 0) | |
10961 | { | |
10962 | size += 4; | |
ac2df442 | 10963 | loc += 4; |
e7d1c40c AM |
10964 | bfd_put_32 (htab->params->stub_bfd, |
10965 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10966 | } |
ad8e1ba5 AM |
10967 | } |
10968 | loc += 4; | |
e7d1c40c | 10969 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10970 | loc += 4; |
e7d1c40c | 10971 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10972 | break; |
5d1634d7 | 10973 | |
721956f4 | 10974 | case ppc_stub_plt_call: |
794e51c0 | 10975 | case ppc_stub_plt_call_r2save: |
e054468f | 10976 | if (stub_entry->h != NULL |
b31867b6 AM |
10977 | && stub_entry->h->is_func_descriptor |
10978 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10979 | { |
b31867b6 AM |
10980 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10981 | ||
10982 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 10983 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
b31867b6 AM |
10984 | if (fh->elf.root.type == bfd_link_hash_undefined) |
10985 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10986 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10987 | fh->was_undefined = 0; | |
c862ae31 AM |
10988 | } |
10989 | ||
721956f4 | 10990 | /* Now build the stub. */ |
e054468f | 10991 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10992 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10993 | abort (); |
10994 | ||
33e44f2e | 10995 | plt = htab->elf.splt; |
25f23106 AM |
10996 | if (!htab->elf.dynamic_sections_created |
10997 | || stub_entry->h == NULL | |
10998 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10999 | plt = htab->elf.iplt; |
e054468f AM |
11000 | |
11001 | dest += plt->output_offset + plt->output_section->vma; | |
11002 | ||
11003 | if (stub_entry->h == NULL | |
11004 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
11005 | { | |
11006 | Elf_Internal_Rela rela; | |
11007 | bfd_byte *rl; | |
11008 | ||
11009 | rela.r_offset = dest; | |
ee67d69a AM |
11010 | if (htab->opd_abi) |
11011 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
11012 | else | |
11013 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
11014 | rela.r_addend = (stub_entry->target_value |
11015 | + stub_entry->target_section->output_offset | |
11016 | + stub_entry->target_section->output_section->vma); | |
11017 | ||
33e44f2e AM |
11018 | rl = (htab->elf.irelplt->contents |
11019 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
11020 | * sizeof (Elf64_External_Rela))); |
11021 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
11022 | stub_entry->plt_ent->plt.offset |= 1; |
11023 | } | |
176a0d42 AM |
11024 | |
11025 | off = (dest | |
e054468f | 11026 | - elf_gp (plt->output_section->owner) |
6f20ed8a | 11027 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11028 | |
ad8e1ba5 | 11029 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11030 | { |
25f53a85 | 11031 | info->callbacks->einfo |
bc30df16 | 11032 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
11033 | stub_entry->h != NULL |
11034 | ? stub_entry->h->elf.root.root.string | |
11035 | : "<local sym>"); | |
721956f4 | 11036 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11037 | htab->stub_error = TRUE; |
11038 | return FALSE; | |
721956f4 AM |
11039 | } |
11040 | ||
e7d1c40c | 11041 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11042 | { |
11043 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11044 | ||
6f20ed8a AM |
11045 | stub_entry->group->stub_sec->size += pad; |
11046 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11047 | loc += pad; |
11048 | } | |
11049 | ||
176a0d42 AM |
11050 | r = NULL; |
11051 | if (info->emitrelocations) | |
11052 | { | |
6f20ed8a | 11053 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11054 | ((PPC_HA (off) != 0) |
11055 | + (htab->opd_abi | |
e7d1c40c | 11056 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11057 | && PPC_HA (off + 16) == PPC_HA (off)) |
11058 | : 1))); | |
176a0d42 AM |
11059 | if (r == NULL) |
11060 | return FALSE; | |
6f20ed8a | 11061 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11062 | if (bfd_big_endian (info->output_bfd)) |
11063 | r[0].r_offset += 2; | |
176a0d42 AM |
11064 | r[0].r_addend = dest; |
11065 | } | |
a7f2871e AM |
11066 | if (stub_entry->h != NULL |
11067 | && (stub_entry->h == htab->tls_get_addr_fd | |
11068 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11069 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11070 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11071 | else |
794e51c0 | 11072 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11073 | size = p - loc; |
11074 | break; | |
11075 | ||
a4b6fadd AM |
11076 | case ppc_stub_save_res: |
11077 | return TRUE; | |
11078 | ||
721956f4 AM |
11079 | default: |
11080 | BFD_FAIL (); | |
b34976b6 | 11081 | return FALSE; |
721956f4 AM |
11082 | } |
11083 | ||
6f20ed8a | 11084 | stub_entry->group->stub_sec->size += size; |
97b639ba | 11085 | |
e7d1c40c | 11086 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11087 | { |
11088 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11089 | size_t len1, len2; |
11090 | char *name; | |
11091 | const char *const stub_str[] = { "long_branch", | |
11092 | "long_branch_r2off", | |
11093 | "plt_branch", | |
11094 | "plt_branch_r2off", | |
794e51c0 | 11095 | "plt_call", |
ee75fd95 AM |
11096 | "plt_call" }; |
11097 | ||
11098 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11099 | len2 = strlen (stub_entry->root.string); | |
11100 | name = bfd_malloc (len1 + len2 + 2); | |
11101 | if (name == NULL) | |
11102 | return FALSE; | |
11103 | memcpy (name, stub_entry->root.string, 9); | |
11104 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11105 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11106 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11107 | if (h == NULL) |
11108 | return FALSE; | |
11109 | if (h->root.type == bfd_link_hash_new) | |
11110 | { | |
11111 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11112 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11113 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11114 | h->ref_regular = 1; |
11115 | h->def_regular = 1; | |
11116 | h->ref_regular_nonweak = 1; | |
11117 | h->forced_local = 1; | |
11118 | h->non_elf = 0; | |
2ec55de3 | 11119 | h->root.linker_def = 1; |
97b639ba AM |
11120 | } |
11121 | } | |
11122 | ||
b34976b6 | 11123 | return TRUE; |
721956f4 AM |
11124 | } |
11125 | ||
11126 | /* As above, but don't actually build the stub. Just bump offset so | |
11127 | we know stub section sizes, and select plt_branch stubs where | |
11128 | long_branch stubs won't do. */ | |
11129 | ||
b34976b6 | 11130 | static bfd_boolean |
4ce794b7 | 11131 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11132 | { |
11133 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11134 | struct bfd_link_info *info; |
721956f4 AM |
11135 | struct ppc_link_hash_table *htab; |
11136 | bfd_vma off; | |
11137 | int size; | |
11138 | ||
11139 | /* Massage our args to the form they really have. */ | |
11140 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11141 | info = in_arg; |
11142 | ||
11143 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11144 | if (htab == NULL) |
11145 | return FALSE; | |
721956f4 | 11146 | |
a4b6fadd AM |
11147 | if (stub_entry->h != NULL |
11148 | && stub_entry->h->save_res | |
11149 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11150 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11151 | { | |
11152 | /* Don't make stubs to out-of-line register save/restore | |
11153 | functions. Instead, emit copies of the functions. */ | |
11154 | stub_entry->group->needs_save_res = 1; | |
11155 | stub_entry->stub_type = ppc_stub_save_res; | |
11156 | return TRUE; | |
11157 | } | |
11158 | ||
794e51c0 AM |
11159 | if (stub_entry->stub_type == ppc_stub_plt_call |
11160 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11161 | { |
e054468f AM |
11162 | asection *plt; |
11163 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11164 | if (off >= (bfd_vma) -2) |
411e1bfb | 11165 | abort (); |
33e44f2e | 11166 | plt = htab->elf.splt; |
25f23106 AM |
11167 | if (!htab->elf.dynamic_sections_created |
11168 | || stub_entry->h == NULL | |
11169 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11170 | plt = htab->elf.iplt; |
e054468f AM |
11171 | off += (plt->output_offset |
11172 | + plt->output_section->vma | |
11173 | - elf_gp (plt->output_section->owner) | |
6f20ed8a | 11174 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11175 | |
794e51c0 | 11176 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 11177 | if (htab->params->plt_stub_align) |
794e51c0 | 11178 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11179 | if (info->emitrelocations) |
11180 | { | |
6f20ed8a | 11181 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11182 | += ((PPC_HA (off) != 0) |
11183 | + (htab->opd_abi | |
e7d1c40c | 11184 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11185 | && PPC_HA (off + 16) == PPC_HA (off)) |
11186 | : 1)); | |
6f20ed8a | 11187 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11188 | } |
721956f4 AM |
11189 | } |
11190 | else | |
11191 | { | |
ad8e1ba5 AM |
11192 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11193 | variants. */ | |
ac2df442 | 11194 | bfd_vma r2off = 0; |
6911b7dc | 11195 | bfd_vma local_off = 0; |
ac2df442 | 11196 | |
721956f4 AM |
11197 | off = (stub_entry->target_value |
11198 | + stub_entry->target_section->output_offset | |
11199 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11200 | off -= (stub_entry->group->stub_sec->size |
11201 | + stub_entry->group->stub_sec->output_offset | |
11202 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11203 | |
ad8e1ba5 AM |
11204 | /* Reset the stub type from the plt variant in case we now |
11205 | can reach with a shorter stub. */ | |
11206 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11207 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11208 | ||
11209 | size = 4; | |
11210 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11211 | { | |
25f53a85 | 11212 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11213 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11214 | { |
11215 | htab->stub_error = TRUE; | |
11216 | return FALSE; | |
11217 | } | |
a7c49797 | 11218 | size = 8; |
ac2df442 | 11219 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11220 | size += 4; |
11221 | if (PPC_LO (r2off) != 0) | |
11222 | size += 4; | |
ac2df442 | 11223 | off -= size - 4; |
ad8e1ba5 AM |
11224 | } |
11225 | ||
6911b7dc AM |
11226 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11227 | ||
b9e5796b AM |
11228 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
11229 | Do the same for -R objects without function descriptors. */ | |
11230 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11231 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11232 | && r2off == 0 |
11233 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11234 | { |
11235 | struct ppc_branch_hash_entry *br_entry; | |
11236 | ||
11237 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11238 | stub_entry->root.string + 9, | |
b34976b6 | 11239 | TRUE, FALSE); |
721956f4 AM |
11240 | if (br_entry == NULL) |
11241 | { | |
8de848d8 | 11242 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 11243 | stub_entry->root.string); |
b34976b6 AM |
11244 | htab->stub_error = TRUE; |
11245 | return FALSE; | |
721956f4 AM |
11246 | } |
11247 | ||
11248 | if (br_entry->iter != htab->stub_iteration) | |
11249 | { | |
11250 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11251 | br_entry->offset = htab->brlt->size; |
11252 | htab->brlt->size += 8; | |
63bc6f6c | 11253 | |
ee75fd95 | 11254 | if (htab->relbrlt != NULL) |
eea6121a | 11255 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11256 | else if (info->emitrelocations) |
11257 | { | |
11258 | htab->brlt->reloc_count += 1; | |
11259 | htab->brlt->flags |= SEC_RELOC; | |
11260 | } | |
721956f4 | 11261 | } |
ad8e1ba5 AM |
11262 | |
11263 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11264 | off = (br_entry->offset |
11265 | + htab->brlt->output_offset | |
11266 | + htab->brlt->output_section->vma | |
11267 | - elf_gp (htab->brlt->output_section->owner) | |
6f20ed8a | 11268 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11269 | |
176a0d42 AM |
11270 | if (info->emitrelocations) |
11271 | { | |
6f20ed8a AM |
11272 | stub_entry->group->stub_sec->reloc_count |
11273 | += 1 + (PPC_HA (off) != 0); | |
11274 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11275 | } |
11276 | ||
00f412ee | 11277 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11278 | { |
11279 | size = 12; | |
176a0d42 | 11280 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11281 | size = 16; |
11282 | } | |
11283 | else | |
11284 | { | |
00f412ee | 11285 | size = 16; |
176a0d42 | 11286 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11287 | size += 4; |
11288 | ||
11289 | if (PPC_HA (r2off) != 0) | |
11290 | size += 4; | |
00f412ee AM |
11291 | if (PPC_LO (r2off) != 0) |
11292 | size += 4; | |
ac2df442 | 11293 | } |
721956f4 | 11294 | } |
84f5d08e AM |
11295 | else if (info->emitrelocations) |
11296 | { | |
6f20ed8a AM |
11297 | stub_entry->group->stub_sec->reloc_count += 1; |
11298 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11299 | } |
721956f4 AM |
11300 | } |
11301 | ||
6f20ed8a | 11302 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11303 | return TRUE; |
721956f4 AM |
11304 | } |
11305 | ||
11306 | /* Set up various things so that we can make a list of input sections | |
11307 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11308 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11309 | |
11310 | int | |
e7d1c40c | 11311 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11312 | { |
6f20ed8a | 11313 | unsigned int id; |
721956f4 AM |
11314 | bfd_size_type amt; |
11315 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11316 | ||
4dfe6ac6 NC |
11317 | if (htab == NULL) |
11318 | return -1; | |
4c52953f | 11319 | |
6f20ed8a AM |
11320 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
11321 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
11322 | htab->sec_info = bfd_zmalloc (amt); | |
11323 | if (htab->sec_info == NULL) | |
721956f4 AM |
11324 | return -1; |
11325 | ||
3d6f9012 AM |
11326 | /* Set toc_off for com, und, abs and ind sections. */ |
11327 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11328 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11329 | |
721956f4 AM |
11330 | return 1; |
11331 | } | |
11332 | ||
927be08e AM |
11333 | /* Set up for first pass at multitoc partitioning. */ |
11334 | ||
11335 | void | |
11336 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11337 | { | |
11338 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11339 | ||
1c865ab2 | 11340 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11341 | htab->toc_bfd = NULL; |
11342 | htab->toc_first_sec = NULL; | |
11343 | } | |
11344 | ||
e717da7e AM |
11345 | /* The linker repeatedly calls this function for each TOC input section |
11346 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11347 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11348 | |
927be08e | 11349 | bfd_boolean |
4ce794b7 | 11350 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11351 | { |
11352 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11353 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11354 | |
4dfe6ac6 NC |
11355 | if (htab == NULL) |
11356 | return FALSE; | |
11357 | ||
927be08e | 11358 | if (!htab->second_toc_pass) |
4c52953f | 11359 | { |
927be08e | 11360 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11361 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11362 | ||
11363 | if (new_bfd) | |
bf102f86 AM |
11364 | { |
11365 | htab->toc_bfd = isec->owner; | |
11366 | htab->toc_first_sec = isec; | |
11367 | } | |
927be08e | 11368 | |
bf102f86 AM |
11369 | addr = isec->output_offset + isec->output_section->vma; |
11370 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11371 | limit = 0x80008000; |
11372 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11373 | limit = 0x10000; | |
11374 | if (off + isec->size > limit) | |
bf102f86 AM |
11375 | { |
11376 | addr = (htab->toc_first_sec->output_offset | |
11377 | + htab->toc_first_sec->output_section->vma); | |
11378 | htab->toc_curr = addr; | |
a27e685f | 11379 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11380 | } |
99877b66 | 11381 | |
927be08e AM |
11382 | /* toc_curr is the base address of this toc group. Set elf_gp |
11383 | for the input section to be the offset relative to the | |
11384 | output toc base plus 0x8000. Making the input elf_gp an | |
11385 | offset allows us to move the toc as a whole without | |
11386 | recalculating input elf_gp. */ | |
11387 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11388 | off += TOC_BASE_OFF; | |
11389 | ||
11390 | /* Die if someone uses a linker script that doesn't keep input | |
11391 | file .toc and .got together. */ | |
a4fd3de5 AM |
11392 | if (new_bfd |
11393 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11394 | && elf_gp (isec->owner) != off) |
11395 | return FALSE; | |
11396 | ||
11397 | elf_gp (isec->owner) = off; | |
11398 | return TRUE; | |
4c52953f | 11399 | } |
927be08e AM |
11400 | |
11401 | /* During the second pass toc_first_sec points to the start of | |
11402 | a toc group, and toc_curr is used to track the old elf_gp. | |
11403 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11404 | if (htab->toc_bfd == isec->owner) | |
11405 | return TRUE; | |
11406 | htab->toc_bfd = isec->owner; | |
11407 | ||
11408 | if (htab->toc_first_sec == NULL | |
11409 | || htab->toc_curr != elf_gp (isec->owner)) | |
11410 | { | |
11411 | htab->toc_curr = elf_gp (isec->owner); | |
11412 | htab->toc_first_sec = isec; | |
11413 | } | |
11414 | addr = (htab->toc_first_sec->output_offset | |
11415 | + htab->toc_first_sec->output_section->vma); | |
11416 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11417 | elf_gp (isec->owner) = off; | |
11418 | ||
11419 | return TRUE; | |
ad8e1ba5 AM |
11420 | } |
11421 | ||
927be08e AM |
11422 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11423 | symbol H. */ | |
11424 | ||
11425 | static bfd_boolean | |
11426 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11427 | { | |
11428 | if (h->root.type == bfd_link_hash_indirect) | |
11429 | return TRUE; | |
11430 | ||
927be08e AM |
11431 | merge_got_entries (&h->got.glist); |
11432 | ||
11433 | return TRUE; | |
11434 | } | |
11435 | ||
11436 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11437 | symbol H. */ | |
11438 | ||
11439 | static bfd_boolean | |
11440 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11441 | { | |
11442 | struct got_entry *gent; | |
11443 | ||
11444 | if (h->root.type == bfd_link_hash_indirect) | |
11445 | return TRUE; | |
11446 | ||
927be08e AM |
11447 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11448 | if (!gent->is_indirect) | |
11449 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11450 | return TRUE; | |
11451 | } | |
11452 | ||
11453 | /* Called on the first multitoc pass after the last call to | |
11454 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11455 | entries. */ | |
11456 | ||
11457 | bfd_boolean | |
11458 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11459 | { |
11460 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11461 | struct bfd *ibfd, *ibfd2; |
11462 | bfd_boolean done_something; | |
11463 | ||
11464 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11465 | |
7865406b AM |
11466 | if (!htab->do_multi_toc) |
11467 | return FALSE; | |
11468 | ||
d0fae19d | 11469 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11470 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11471 | ||
11472 | /* And tlsld_got. */ | |
c72f2fb2 | 11473 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11474 | { |
11475 | struct got_entry *ent, *ent2; | |
11476 | ||
11477 | if (!is_ppc64_elf (ibfd)) | |
11478 | continue; | |
11479 | ||
11480 | ent = ppc64_tlsld_got (ibfd); | |
11481 | if (!ent->is_indirect | |
11482 | && ent->got.offset != (bfd_vma) -1) | |
11483 | { | |
c72f2fb2 | 11484 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11485 | { |
11486 | if (!is_ppc64_elf (ibfd2)) | |
11487 | continue; | |
11488 | ||
11489 | ent2 = ppc64_tlsld_got (ibfd2); | |
11490 | if (!ent2->is_indirect | |
11491 | && ent2->got.offset != (bfd_vma) -1 | |
11492 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11493 | { | |
11494 | ent2->is_indirect = TRUE; | |
11495 | ent2->got.ent = ent; | |
11496 | } | |
11497 | } | |
11498 | } | |
11499 | } | |
11500 | ||
11501 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11502 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11503 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11504 | htab->got_reli_size = 0; |
11505 | ||
c72f2fb2 | 11506 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11507 | { |
11508 | asection *got, *relgot; | |
11509 | ||
11510 | if (!is_ppc64_elf (ibfd)) | |
11511 | continue; | |
11512 | ||
11513 | got = ppc64_elf_tdata (ibfd)->got; | |
11514 | if (got != NULL) | |
11515 | { | |
11516 | got->rawsize = got->size; | |
11517 | got->size = 0; | |
11518 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11519 | relgot->rawsize = relgot->size; | |
11520 | relgot->size = 0; | |
11521 | } | |
11522 | } | |
11523 | ||
11524 | /* Now reallocate the got, local syms first. We don't need to | |
11525 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11526 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11527 | { |
11528 | struct got_entry **lgot_ents; | |
11529 | struct got_entry **end_lgot_ents; | |
11530 | struct plt_entry **local_plt; | |
11531 | struct plt_entry **end_local_plt; | |
f961d9dd | 11532 | unsigned char *lgot_masks; |
927be08e AM |
11533 | bfd_size_type locsymcount; |
11534 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11535 | asection *s; |
927be08e AM |
11536 | |
11537 | if (!is_ppc64_elf (ibfd)) | |
11538 | continue; | |
11539 | ||
11540 | lgot_ents = elf_local_got_ents (ibfd); | |
11541 | if (!lgot_ents) | |
11542 | continue; | |
11543 | ||
11544 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11545 | locsymcount = symtab_hdr->sh_info; | |
11546 | end_lgot_ents = lgot_ents + locsymcount; | |
11547 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11548 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11549 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11550 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11551 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11552 | { | |
11553 | struct got_entry *ent; | |
11554 | ||
11555 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11556 | { |
19e08130 AM |
11557 | unsigned int ent_size = 8; |
11558 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11559 | ||
d0fae19d AM |
11560 | ent->got.offset = s->size; |
11561 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11562 | { |
19e08130 AM |
11563 | ent_size *= 2; |
11564 | rel_size *= 2; | |
11565 | } | |
11566 | s->size += ent_size; | |
11567 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11568 | { | |
33e44f2e | 11569 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11570 | htab->got_reli_size += rel_size; |
11571 | } | |
0e1862bb | 11572 | else if (bfd_link_pic (info)) |
19e08130 AM |
11573 | { |
11574 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11575 | srel->size += rel_size; | |
d0fae19d AM |
11576 | } |
11577 | } | |
927be08e AM |
11578 | } |
11579 | } | |
11580 | ||
11581 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11582 | ||
c72f2fb2 | 11583 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11584 | { |
11585 | struct got_entry *ent; | |
11586 | ||
11587 | if (!is_ppc64_elf (ibfd)) | |
11588 | continue; | |
11589 | ||
11590 | ent = ppc64_tlsld_got (ibfd); | |
11591 | if (!ent->is_indirect | |
11592 | && ent->got.offset != (bfd_vma) -1) | |
11593 | { | |
11594 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11595 | ent->got.offset = s->size; | |
11596 | s->size += 16; | |
0e1862bb | 11597 | if (bfd_link_pic (info)) |
927be08e AM |
11598 | { |
11599 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11600 | srel->size += sizeof (Elf64_External_Rela); | |
11601 | } | |
11602 | } | |
11603 | } | |
11604 | ||
33e44f2e | 11605 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11606 | if (!done_something) |
c72f2fb2 | 11607 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11608 | { |
11609 | asection *got; | |
11610 | ||
11611 | if (!is_ppc64_elf (ibfd)) | |
11612 | continue; | |
11613 | ||
11614 | got = ppc64_elf_tdata (ibfd)->got; | |
11615 | if (got != NULL) | |
11616 | { | |
11617 | done_something = got->rawsize != got->size; | |
11618 | if (done_something) | |
11619 | break; | |
11620 | } | |
11621 | } | |
11622 | ||
11623 | if (done_something) | |
e7d1c40c | 11624 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11625 | |
11626 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11627 | on input sections. */ | |
11628 | htab->toc_bfd = NULL; | |
11629 | htab->toc_first_sec = NULL; | |
11630 | htab->second_toc_pass = TRUE; | |
11631 | return done_something; | |
11632 | } | |
11633 | ||
11634 | /* Called after second pass of multitoc partitioning. */ | |
11635 | ||
11636 | void | |
11637 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11638 | { | |
11639 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11640 | ||
11641 | /* After the second pass, toc_curr tracks the TOC offset used | |
11642 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11643 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11644 | } |
11645 | ||
9b5ecbd0 AM |
11646 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11647 | calls, then there's no need to use toc adjusting stubs when branching | |
11648 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11649 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11650 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11651 | for a stub was detected. If called from the top level, a return of | |
11652 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11653 | |
11654 | static int | |
4ce794b7 | 11655 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11656 | { |
9b5ecbd0 | 11657 | int ret; |
70cc837d AM |
11658 | |
11659 | /* Mark this section as checked. */ | |
11660 | isec->call_check_done = 1; | |
9b5ecbd0 | 11661 | |
772119ce AM |
11662 | /* We know none of our code bearing sections will need toc stubs. */ |
11663 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11664 | return 0; | |
11665 | ||
eea6121a | 11666 | if (isec->size == 0) |
082c50f8 AM |
11667 | return 0; |
11668 | ||
4c52953f AM |
11669 | if (isec->output_section == NULL) |
11670 | return 0; | |
11671 | ||
4c52953f | 11672 | ret = 0; |
70cc837d | 11673 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11674 | { |
70cc837d AM |
11675 | Elf_Internal_Rela *relstart, *rel; |
11676 | Elf_Internal_Sym *local_syms; | |
11677 | struct ppc_link_hash_table *htab; | |
2917689a | 11678 | |
70cc837d AM |
11679 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11680 | info->keep_memory); | |
11681 | if (relstart == NULL) | |
11682 | return -1; | |
90aecf7a | 11683 | |
70cc837d AM |
11684 | /* Look for branches to outside of this section. */ |
11685 | local_syms = NULL; | |
11686 | htab = ppc_hash_table (info); | |
11687 | if (htab == NULL) | |
11688 | return -1; | |
4c52953f | 11689 | |
70cc837d | 11690 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11691 | { |
70cc837d AM |
11692 | enum elf_ppc64_reloc_type r_type; |
11693 | unsigned long r_symndx; | |
11694 | struct elf_link_hash_entry *h; | |
11695 | struct ppc_link_hash_entry *eh; | |
11696 | Elf_Internal_Sym *sym; | |
11697 | asection *sym_sec; | |
11698 | struct _opd_sec_data *opd; | |
11699 | bfd_vma sym_value; | |
11700 | bfd_vma dest; | |
11701 | ||
11702 | r_type = ELF64_R_TYPE (rel->r_info); | |
11703 | if (r_type != R_PPC64_REL24 | |
11704 | && r_type != R_PPC64_REL14 | |
11705 | && r_type != R_PPC64_REL14_BRTAKEN | |
11706 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11707 | continue; | |
4c52953f | 11708 | |
70cc837d AM |
11709 | r_symndx = ELF64_R_SYM (rel->r_info); |
11710 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11711 | isec->owner)) | |
4c52953f | 11712 | { |
70cc837d AM |
11713 | ret = -1; |
11714 | break; | |
11715 | } | |
4c52953f | 11716 | |
70cc837d AM |
11717 | /* Calls to dynamic lib functions go through a plt call stub |
11718 | that uses r2. */ | |
11719 | eh = (struct ppc_link_hash_entry *) h; | |
11720 | if (eh != NULL | |
11721 | && (eh->elf.plt.plist != NULL | |
11722 | || (eh->oh != NULL | |
11723 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11724 | { | |
11725 | ret = 1; | |
11726 | break; | |
4c52953f AM |
11727 | } |
11728 | ||
70cc837d AM |
11729 | if (sym_sec == NULL) |
11730 | /* Ignore other undefined symbols. */ | |
4c52953f | 11731 | continue; |
4c52953f | 11732 | |
70cc837d AM |
11733 | /* Assume branches to other sections not included in the |
11734 | link need stubs too, to cover -R and absolute syms. */ | |
11735 | if (sym_sec->output_section == NULL) | |
11736 | { | |
11737 | ret = 1; | |
11738 | break; | |
11739 | } | |
4c52953f | 11740 | |
70cc837d AM |
11741 | if (h == NULL) |
11742 | sym_value = sym->st_value; | |
11743 | else | |
11744 | { | |
11745 | if (h->root.type != bfd_link_hash_defined | |
11746 | && h->root.type != bfd_link_hash_defweak) | |
11747 | abort (); | |
11748 | sym_value = h->root.u.def.value; | |
11749 | } | |
11750 | sym_value += rel->r_addend; | |
4c52953f | 11751 | |
70cc837d AM |
11752 | /* If this branch reloc uses an opd sym, find the code section. */ |
11753 | opd = get_opd_info (sym_sec); | |
11754 | if (opd != NULL) | |
11755 | { | |
11756 | if (h == NULL && opd->adjust != NULL) | |
11757 | { | |
11758 | long adjust; | |
4c52953f | 11759 | |
92a9c616 | 11760 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11761 | if (adjust == -1) |
11762 | /* Assume deleted functions won't ever be called. */ | |
11763 | continue; | |
11764 | sym_value += adjust; | |
11765 | } | |
4c52953f | 11766 | |
aef36ac1 AM |
11767 | dest = opd_entry_value (sym_sec, sym_value, |
11768 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11769 | if (dest == (bfd_vma) -1) |
11770 | continue; | |
11771 | } | |
11772 | else | |
11773 | dest = (sym_value | |
11774 | + sym_sec->output_offset | |
11775 | + sym_sec->output_section->vma); | |
4c52953f | 11776 | |
70cc837d AM |
11777 | /* Ignore branch to self. */ |
11778 | if (sym_sec == isec) | |
11779 | continue; | |
4c52953f | 11780 | |
70cc837d AM |
11781 | /* If the called function uses the toc, we need a stub. */ |
11782 | if (sym_sec->has_toc_reloc | |
11783 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11784 | { |
70cc837d | 11785 | ret = 1; |
4c52953f AM |
11786 | break; |
11787 | } | |
70cc837d AM |
11788 | |
11789 | /* Assume any branch that needs a long branch stub might in fact | |
11790 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11791 | else if (dest - (isec->output_offset | |
11792 | + isec->output_section->vma | |
6911b7dc AM |
11793 | + rel->r_offset) + (1 << 25) |
11794 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11795 | ? h->other | |
11796 | : sym->st_other)) | |
4c52953f | 11797 | { |
70cc837d AM |
11798 | ret = 1; |
11799 | break; | |
11800 | } | |
11801 | ||
11802 | /* If calling back to a section in the process of being | |
11803 | tested, we can't say for sure that no toc adjusting stubs | |
11804 | are needed, so don't return zero. */ | |
11805 | else if (sym_sec->call_check_in_progress) | |
11806 | ret = 2; | |
11807 | ||
11808 | /* Branches to another section that itself doesn't have any TOC | |
11809 | references are OK. Recursively call ourselves to check. */ | |
11810 | else if (!sym_sec->call_check_done) | |
11811 | { | |
11812 | int recur; | |
11813 | ||
11814 | /* Mark current section as indeterminate, so that other | |
11815 | sections that call back to current won't be marked as | |
11816 | known. */ | |
11817 | isec->call_check_in_progress = 1; | |
11818 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11819 | isec->call_check_in_progress = 0; | |
11820 | ||
4c52953f AM |
11821 | if (recur != 0) |
11822 | { | |
70cc837d AM |
11823 | ret = recur; |
11824 | if (recur != 2) | |
11825 | break; | |
4c52953f AM |
11826 | } |
11827 | } | |
4c52953f | 11828 | } |
70cc837d AM |
11829 | |
11830 | if (local_syms != NULL | |
11831 | && (elf_symtab_hdr (isec->owner).contents | |
11832 | != (unsigned char *) local_syms)) | |
11833 | free (local_syms); | |
11834 | if (elf_section_data (isec)->relocs != relstart) | |
11835 | free (relstart); | |
9b5ecbd0 AM |
11836 | } |
11837 | ||
70cc837d AM |
11838 | if ((ret & 1) == 0 |
11839 | && isec->map_head.s != NULL | |
11840 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11841 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11842 | { | |
11843 | if (isec->map_head.s->has_toc_reloc | |
11844 | || isec->map_head.s->makes_toc_func_call) | |
11845 | ret = 1; | |
11846 | else if (!isec->map_head.s->call_check_done) | |
11847 | { | |
11848 | int recur; | |
11849 | isec->call_check_in_progress = 1; | |
11850 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11851 | isec->call_check_in_progress = 0; | |
11852 | if (recur != 0) | |
11853 | ret = recur; | |
11854 | } | |
11855 | } | |
11856 | ||
11857 | if (ret == 1) | |
11858 | isec->makes_toc_func_call = 1; | |
4c52953f | 11859 | |
9b5ecbd0 AM |
11860 | return ret; |
11861 | } | |
11862 | ||
721956f4 AM |
11863 | /* The linker repeatedly calls this function for each input section, |
11864 | in the order that input sections are linked into output sections. | |
11865 | Build lists of input sections to determine groupings between which | |
11866 | we may insert linker stubs. */ | |
11867 | ||
9b5ecbd0 | 11868 | bfd_boolean |
4ce794b7 | 11869 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11870 | { |
11871 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11872 | ||
4dfe6ac6 NC |
11873 | if (htab == NULL) |
11874 | return FALSE; | |
11875 | ||
734b6cf9 | 11876 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 11877 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 11878 | { |
3d6f9012 AM |
11879 | /* This happens to make the list in reverse order, |
11880 | which is what we want. */ | |
6f20ed8a AM |
11881 | htab->sec_info[isec->id].u.list |
11882 | = htab->sec_info[isec->output_section->id].u.list; | |
11883 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 11884 | } |
ad8e1ba5 | 11885 | |
4c52953f | 11886 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11887 | { |
8b974ba3 AM |
11888 | /* Analyse sections that aren't already flagged as needing a |
11889 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11890 | .fixup contains branches, but only back to the function that | |
11891 | hit an exception. */ | |
11892 | if (!(isec->has_toc_reloc | |
11893 | || (isec->flags & SEC_CODE) == 0 | |
11894 | || strcmp (isec->name, ".fixup") == 0 | |
11895 | || isec->call_check_done)) | |
11896 | { | |
11897 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11898 | return FALSE; |
8b974ba3 AM |
11899 | } |
11900 | /* Make all sections use the TOC assigned for this object file. | |
11901 | This will be wrong for pasted sections; We fix that in | |
11902 | check_pasted_section(). */ | |
11903 | if (elf_gp (isec->owner) != 0) | |
11904 | htab->toc_curr = elf_gp (isec->owner); | |
11905 | } | |
11906 | ||
6f20ed8a | 11907 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11908 | return TRUE; |
721956f4 AM |
11909 | } |
11910 | ||
70cc837d AM |
11911 | /* Check that all .init and .fini sections use the same toc, if they |
11912 | have toc relocs. */ | |
11913 | ||
11914 | static bfd_boolean | |
11915 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11916 | { | |
11917 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11918 | ||
11919 | if (o != NULL) | |
11920 | { | |
11921 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11922 | bfd_vma toc_off = 0; | |
11923 | asection *i; | |
11924 | ||
11925 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11926 | if (i->has_toc_reloc) | |
11927 | { | |
11928 | if (toc_off == 0) | |
6f20ed8a AM |
11929 | toc_off = htab->sec_info[i->id].toc_off; |
11930 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
11931 | return FALSE; |
11932 | } | |
6683a28d AM |
11933 | |
11934 | if (toc_off == 0) | |
11935 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11936 | if (i->makes_toc_func_call) | |
11937 | { | |
6f20ed8a | 11938 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
11939 | break; |
11940 | } | |
11941 | ||
70cc837d AM |
11942 | /* Make sure the whole pasted function uses the same toc offset. */ |
11943 | if (toc_off != 0) | |
11944 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 11945 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
11946 | } |
11947 | return TRUE; | |
11948 | } | |
11949 | ||
11950 | bfd_boolean | |
11951 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11952 | { | |
11953 | return (check_pasted_section (info, ".init") | |
11954 | & check_pasted_section (info, ".fini")); | |
11955 | } | |
11956 | ||
721956f4 AM |
11957 | /* See whether we can group stub sections together. Grouping stub |
11958 | sections may result in fewer stubs. More importantly, we need to | |
11959 | put all .init* and .fini* stubs at the beginning of the .init or | |
11960 | .fini output sections respectively, because glibc splits the | |
11961 | _init and _fini functions into multiple parts. Putting a stub in | |
11962 | the middle of a function is not a good idea. */ | |
11963 | ||
6f20ed8a AM |
11964 | static bfd_boolean |
11965 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
11966 | bfd_size_type stub_group_size, |
11967 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11968 | { |
6f20ed8a AM |
11969 | struct ppc_link_hash_table *htab; |
11970 | asection *osec; | |
7c8fe5c4 AM |
11971 | bfd_size_type stub14_group_size; |
11972 | bfd_boolean suppress_size_errors; | |
11973 | ||
6f20ed8a AM |
11974 | htab = ppc_hash_table (info); |
11975 | if (htab == NULL) | |
11976 | return FALSE; | |
11977 | ||
7c8fe5c4 | 11978 | suppress_size_errors = FALSE; |
0cfb0717 | 11979 | stub14_group_size = stub_group_size >> 10; |
7c8fe5c4 AM |
11980 | if (stub_group_size == 1) |
11981 | { | |
11982 | /* Default values. */ | |
11983 | if (stubs_always_before_branch) | |
11984 | { | |
11985 | stub_group_size = 0x1e00000; | |
11986 | stub14_group_size = 0x7800; | |
11987 | } | |
11988 | else | |
11989 | { | |
11990 | stub_group_size = 0x1c00000; | |
11991 | stub14_group_size = 0x7000; | |
11992 | } | |
11993 | suppress_size_errors = TRUE; | |
11994 | } | |
11995 | ||
6f20ed8a | 11996 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 11997 | { |
6f20ed8a AM |
11998 | asection *tail; |
11999 | ||
12000 | if (osec->id >= htab->sec_info_arr_size) | |
12001 | continue; | |
12002 | ||
12003 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12004 | while (tail != NULL) |
721956f4 | 12005 | { |
734b6cf9 AM |
12006 | asection *curr; |
12007 | asection *prev; | |
12008 | bfd_size_type total; | |
12009 | bfd_boolean big_sec; | |
12010 | bfd_vma curr_toc; | |
6f20ed8a | 12011 | struct map_stub *group; |
734b6cf9 AM |
12012 | |
12013 | curr = tail; | |
eea6121a | 12014 | total = tail->size; |
6bee8834 AM |
12015 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
12016 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
12017 | ? stub14_group_size : stub_group_size); |
12018 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
12019 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
12020 | tail->owner, tail); | |
6f20ed8a | 12021 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12022 | |
6f20ed8a | 12023 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12024 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12025 | < (ppc64_elf_section_data (prev) != NULL |
12026 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 12027 | ? stub14_group_size : stub_group_size)) |
6f20ed8a | 12028 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12029 | curr = prev; |
12030 | ||
12031 | /* OK, the size from the start of CURR to the end is less | |
12032 | than stub_group_size and thus can be handled by one stub | |
12033 | section. (or the tail section is itself larger than | |
12034 | stub_group_size, in which case we may be toast.) We | |
12035 | should really be keeping track of the total size of stubs | |
12036 | added here, as stubs contribute to the final output | |
12037 | section size. That's a little tricky, and this way will | |
12038 | only break if stubs added make the total size more than | |
12039 | 2^25, ie. for the default stub_group_size, if stubs total | |
12040 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12041 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12042 | if (group == NULL) | |
12043 | return FALSE; | |
12044 | group->link_sec = curr; | |
12045 | group->stub_sec = NULL; | |
a4b6fadd AM |
12046 | group->needs_save_res = 0; |
12047 | group->next = htab->group; | |
12048 | htab->group = group; | |
734b6cf9 | 12049 | do |
721956f4 | 12050 | { |
6f20ed8a | 12051 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12052 | /* Set up this stub group. */ |
6f20ed8a | 12053 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12054 | } |
734b6cf9 AM |
12055 | while (tail != curr && (tail = prev) != NULL); |
12056 | ||
12057 | /* But wait, there's more! Input sections up to stub_group_size | |
12058 | bytes before the stub section can be handled by it too. | |
12059 | Don't do this if we have a really large section after the | |
12060 | stubs, as adding more stubs increases the chance that | |
12061 | branches may not reach into the stub section. */ | |
12062 | if (!stubs_always_before_branch && !big_sec) | |
12063 | { | |
12064 | total = 0; | |
12065 | while (prev != NULL | |
12066 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12067 | < (ppc64_elf_section_data (prev) != NULL |
12068 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 12069 | ? stub14_group_size : stub_group_size)) |
6f20ed8a | 12070 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12071 | { |
12072 | tail = prev; | |
6f20ed8a AM |
12073 | prev = htab->sec_info[tail->id].u.list; |
12074 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12075 | } |
12076 | } | |
12077 | tail = prev; | |
721956f4 AM |
12078 | } |
12079 | } | |
6f20ed8a | 12080 | return TRUE; |
721956f4 AM |
12081 | } |
12082 | ||
58d180e8 AM |
12083 | static const unsigned char glink_eh_frame_cie[] = |
12084 | { | |
12085 | 0, 0, 0, 16, /* length. */ | |
12086 | 0, 0, 0, 0, /* id. */ | |
12087 | 1, /* CIE version. */ | |
12088 | 'z', 'R', 0, /* Augmentation string. */ | |
12089 | 4, /* Code alignment. */ | |
12090 | 0x78, /* Data alignment. */ | |
12091 | 65, /* RA reg. */ | |
12092 | 1, /* Augmentation size. */ | |
12093 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
da44f4e5 AM |
12094 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
12095 | 0, 0, 0, 0 | |
58d180e8 AM |
12096 | }; |
12097 | ||
d969d15f AM |
12098 | /* Stripping output sections is normally done before dynamic section |
12099 | symbols have been allocated. This function is called later, and | |
12100 | handles cases like htab->brlt which is mapped to its own output | |
12101 | section. */ | |
12102 | ||
12103 | static void | |
12104 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12105 | { | |
12106 | if (isec->size == 0 | |
12107 | && isec->output_section->size == 0 | |
53d8967a | 12108 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12109 | && !bfd_section_removed_from_list (info->output_bfd, |
12110 | isec->output_section) | |
12111 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12112 | { | |
12113 | isec->output_section->flags |= SEC_EXCLUDE; | |
12114 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12115 | info->output_bfd->section_count--; | |
12116 | } | |
12117 | } | |
12118 | ||
721956f4 AM |
12119 | /* Determine and set the size of the stub section for a final link. |
12120 | ||
12121 | The basic idea here is to examine all the relocations looking for | |
12122 | PC-relative calls to a target that is unreachable with a "bl" | |
12123 | instruction. */ | |
12124 | ||
b34976b6 | 12125 | bfd_boolean |
e7d1c40c | 12126 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12127 | { |
12128 | bfd_size_type stub_group_size; | |
b34976b6 | 12129 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12130 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12131 | ||
4dfe6ac6 NC |
12132 | if (htab == NULL) |
12133 | return FALSE; | |
12134 | ||
0e1862bb | 12135 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12136 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12137 | if (!htab->opd_abi) |
e7d1c40c AM |
12138 | htab->params->plt_thread_safe = 0; |
12139 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12140 | { |
e2458743 | 12141 | static const char *const thread_starter[] = |
794e51c0 AM |
12142 | { |
12143 | "pthread_create", | |
12144 | /* libstdc++ */ | |
12145 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12146 | /* librt */ | |
12147 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12148 | "mq_notify", "create_timer", | |
12149 | /* libanl */ | |
12150 | "getaddrinfo_a", | |
12151 | /* libgomp */ | |
2300b5a1 | 12152 | "GOMP_parallel", |
794e51c0 | 12153 | "GOMP_parallel_start", |
2300b5a1 | 12154 | "GOMP_parallel_loop_static", |
794e51c0 | 12155 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12156 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12157 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12158 | "GOMP_parallel_loop_guided", |
794e51c0 | 12159 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12160 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12161 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12162 | "GOMP_parallel_sections", |
68ffbac6 | 12163 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12164 | /* libgo */ |
12165 | "__go_go", | |
794e51c0 AM |
12166 | }; |
12167 | unsigned i; | |
12168 | ||
a4b6fadd | 12169 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12170 | { |
12171 | struct elf_link_hash_entry *h; | |
12172 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12173 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12174 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12175 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12176 | break; |
12177 | } | |
12178 | } | |
e7d1c40c AM |
12179 | stubs_always_before_branch = htab->params->group_size < 0; |
12180 | if (htab->params->group_size < 0) | |
12181 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12182 | else |
e7d1c40c | 12183 | stub_group_size = htab->params->group_size; |
721956f4 | 12184 | |
6f20ed8a AM |
12185 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12186 | return FALSE; | |
721956f4 | 12187 | |
721956f4 AM |
12188 | while (1) |
12189 | { | |
12190 | bfd *input_bfd; | |
12191 | unsigned int bfd_indx; | |
a4b6fadd | 12192 | struct map_stub *group; |
721956f4 | 12193 | asection *stub_sec; |
721956f4 AM |
12194 | |
12195 | htab->stub_iteration += 1; | |
721956f4 AM |
12196 | |
12197 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12198 | input_bfd != NULL; | |
c72f2fb2 | 12199 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12200 | { |
12201 | Elf_Internal_Shdr *symtab_hdr; | |
12202 | asection *section; | |
6cdc0ccc | 12203 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12204 | |
0c8d6e5c | 12205 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12206 | continue; |
12207 | ||
721956f4 | 12208 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12209 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12210 | if (symtab_hdr->sh_info == 0) |
12211 | continue; | |
12212 | ||
721956f4 AM |
12213 | /* Walk over each section attached to the input bfd. */ |
12214 | for (section = input_bfd->sections; | |
12215 | section != NULL; | |
12216 | section = section->next) | |
12217 | { | |
721956f4 | 12218 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12219 | |
12220 | /* If there aren't any relocs, then there's nothing more | |
12221 | to do. */ | |
12222 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12223 | || (section->flags & SEC_ALLOC) == 0 |
12224 | || (section->flags & SEC_LOAD) == 0 | |
12225 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12226 | || section->reloc_count == 0) |
12227 | continue; | |
12228 | ||
12229 | /* If this section is a link-once section that will be | |
12230 | discarded, then don't create any stubs. */ | |
12231 | if (section->output_section == NULL | |
927be08e | 12232 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12233 | continue; |
12234 | ||
1e2f5b6e AM |
12235 | /* Get the relocs. */ |
12236 | internal_relocs | |
4ce794b7 | 12237 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12238 | info->keep_memory); |
721956f4 | 12239 | if (internal_relocs == NULL) |
1e2f5b6e | 12240 | goto error_ret_free_local; |
721956f4 AM |
12241 | |
12242 | /* Now examine each relocation. */ | |
12243 | irela = internal_relocs; | |
12244 | irelaend = irela + section->reloc_count; | |
12245 | for (; irela < irelaend; irela++) | |
12246 | { | |
4ce794b7 AM |
12247 | enum elf_ppc64_reloc_type r_type; |
12248 | unsigned int r_indx; | |
721956f4 AM |
12249 | enum ppc_stub_type stub_type; |
12250 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12251 | asection *sym_sec, *code_sec; |
e054468f | 12252 | bfd_vma sym_value, code_value; |
721956f4 | 12253 | bfd_vma destination; |
6911b7dc | 12254 | unsigned long local_off; |
8843416a | 12255 | bfd_boolean ok_dest; |
721956f4 | 12256 | struct ppc_link_hash_entry *hash; |
8387904d | 12257 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12258 | struct elf_link_hash_entry *h; |
12259 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12260 | char *stub_name; |
12261 | const asection *id_sec; | |
74f0fb50 | 12262 | struct _opd_sec_data *opd; |
e054468f | 12263 | struct plt_entry *plt_ent; |
721956f4 AM |
12264 | |
12265 | r_type = ELF64_R_TYPE (irela->r_info); | |
12266 | r_indx = ELF64_R_SYM (irela->r_info); | |
12267 | ||
4ce794b7 | 12268 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12269 | { |
12270 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12271 | goto error_ret_free_internal; |
721956f4 AM |
12272 | } |
12273 | ||
12274 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12275 | if (r_type != R_PPC64_REL24 |
12276 | && r_type != R_PPC64_REL14 | |
12277 | && r_type != R_PPC64_REL14_BRTAKEN | |
12278 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12279 | continue; |
12280 | ||
12281 | /* Now determine the call target, its name, value, | |
12282 | section. */ | |
411e1bfb AM |
12283 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12284 | r_indx, input_bfd)) | |
12285 | goto error_ret_free_internal; | |
12286 | hash = (struct ppc_link_hash_entry *) h; | |
12287 | ||
8843416a | 12288 | ok_dest = FALSE; |
8387904d | 12289 | fdh = NULL; |
7fe2b9a6 | 12290 | sym_value = 0; |
411e1bfb | 12291 | if (hash == NULL) |
721956f4 | 12292 | { |
411e1bfb | 12293 | sym_value = sym->st_value; |
c27b8c2a AM |
12294 | if (sym_sec != NULL |
12295 | && sym_sec->output_section != NULL) | |
12296 | ok_dest = TRUE; | |
721956f4 | 12297 | } |
7fe2b9a6 AM |
12298 | else if (hash->elf.root.type == bfd_link_hash_defined |
12299 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12300 | { | |
12301 | sym_value = hash->elf.root.u.def.value; | |
12302 | if (sym_sec->output_section != NULL) | |
12303 | ok_dest = TRUE; | |
12304 | } | |
12305 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12306 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12307 | { |
99877b66 | 12308 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12309 | use the func descriptor sym instead if it is |
12310 | defined. */ | |
ceb1f1ef | 12311 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12312 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12313 | { |
8387904d AM |
12314 | if (fdh->elf.root.type == bfd_link_hash_defined |
12315 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12316 | { | |
12317 | sym_sec = fdh->elf.root.u.def.section; | |
12318 | sym_value = fdh->elf.root.u.def.value; | |
12319 | if (sym_sec->output_section != NULL) | |
12320 | ok_dest = TRUE; | |
12321 | } | |
99877b66 AM |
12322 | else |
12323 | fdh = NULL; | |
8387904d | 12324 | } |
7fe2b9a6 AM |
12325 | } |
12326 | else | |
12327 | { | |
12328 | bfd_set_error (bfd_error_bad_value); | |
12329 | goto error_ret_free_internal; | |
721956f4 AM |
12330 | } |
12331 | ||
8843416a | 12332 | destination = 0; |
6911b7dc | 12333 | local_off = 0; |
8843416a AM |
12334 | if (ok_dest) |
12335 | { | |
12336 | sym_value += irela->r_addend; | |
12337 | destination = (sym_value | |
12338 | + sym_sec->output_offset | |
12339 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12340 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12341 | ? hash->elf.other | |
12342 | : sym->st_other); | |
8843416a AM |
12343 | } |
12344 | ||
8387904d | 12345 | code_sec = sym_sec; |
e054468f | 12346 | code_value = sym_value; |
74f0fb50 AM |
12347 | opd = get_opd_info (sym_sec); |
12348 | if (opd != NULL) | |
8387904d AM |
12349 | { |
12350 | bfd_vma dest; | |
12351 | ||
74f0fb50 | 12352 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12353 | { |
51aecdc5 | 12354 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12355 | if (adjust == -1) |
12356 | continue; | |
e054468f | 12357 | code_value += adjust; |
8387904d AM |
12358 | sym_value += adjust; |
12359 | } | |
12360 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12361 | &code_sec, &code_value, FALSE); |
8387904d AM |
12362 | if (dest != (bfd_vma) -1) |
12363 | { | |
12364 | destination = dest; | |
12365 | if (fdh != NULL) | |
12366 | { | |
12367 | /* Fixup old ABI sym to point at code | |
12368 | entry. */ | |
99877b66 | 12369 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12370 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12371 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12372 | } |
12373 | } | |
12374 | } | |
12375 | ||
721956f4 | 12376 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12377 | plt_ent = NULL; |
721956f4 | 12378 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12379 | &plt_ent, destination, |
12380 | local_off); | |
ad8e1ba5 AM |
12381 | |
12382 | if (stub_type != ppc_stub_plt_call) | |
12383 | { | |
12384 | /* Check whether we need a TOC adjusting stub. | |
12385 | Since the linker pastes together pieces from | |
12386 | different object files when creating the | |
12387 | _init and _fini functions, it may be that a | |
12388 | call to what looks like a local sym is in | |
12389 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12390 | if (code_sec != NULL |
12391 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12392 | && (htab->sec_info[code_sec->id].toc_off |
12393 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12394 | && (code_sec->has_toc_reloc |
12395 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12396 | stub_type = ppc_stub_long_branch_r2off; |
12397 | } | |
12398 | ||
721956f4 AM |
12399 | if (stub_type == ppc_stub_none) |
12400 | continue; | |
12401 | ||
411e1bfb AM |
12402 | /* __tls_get_addr calls might be eliminated. */ |
12403 | if (stub_type != ppc_stub_plt_call | |
12404 | && hash != NULL | |
8387904d AM |
12405 | && (hash == htab->tls_get_addr |
12406 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12407 | && section->has_tls_reloc |
12408 | && irela != internal_relocs) | |
12409 | { | |
12410 | /* Get tls info. */ | |
f961d9dd | 12411 | unsigned char *tls_mask; |
411e1bfb | 12412 | |
3a71aa26 | 12413 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12414 | irela - 1, input_bfd)) |
12415 | goto error_ret_free_internal; | |
e7b938ca | 12416 | if (*tls_mask != 0) |
411e1bfb AM |
12417 | continue; |
12418 | } | |
12419 | ||
3b421ab3 AM |
12420 | if (stub_type == ppc_stub_plt_call |
12421 | && irela + 1 < irelaend | |
12422 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12423 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12424 | { | |
12425 | if (!tocsave_find (htab, INSERT, | |
12426 | &local_syms, irela + 1, input_bfd)) | |
12427 | goto error_ret_free_internal; | |
12428 | } | |
12429 | else if (stub_type == ppc_stub_plt_call) | |
12430 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12431 | |
721956f4 | 12432 | /* Support for grouping stub sections. */ |
6f20ed8a | 12433 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12434 | |
12435 | /* Get the name of this stub. */ | |
12436 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12437 | if (!stub_name) | |
12438 | goto error_ret_free_internal; | |
12439 | ||
12440 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12441 | stub_name, FALSE, FALSE); |
721956f4 AM |
12442 | if (stub_entry != NULL) |
12443 | { | |
12444 | /* The proper stub has already been created. */ | |
12445 | free (stub_name); | |
794e51c0 AM |
12446 | if (stub_type == ppc_stub_plt_call_r2save) |
12447 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12448 | continue; |
12449 | } | |
12450 | ||
25f53a85 | 12451 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12452 | if (stub_entry == NULL) |
12453 | { | |
12454 | free (stub_name); | |
6cdc0ccc AM |
12455 | error_ret_free_internal: |
12456 | if (elf_section_data (section)->relocs == NULL) | |
12457 | free (internal_relocs); | |
12458 | error_ret_free_local: | |
12459 | if (local_syms != NULL | |
12460 | && (symtab_hdr->contents | |
12461 | != (unsigned char *) local_syms)) | |
12462 | free (local_syms); | |
b34976b6 | 12463 | return FALSE; |
721956f4 AM |
12464 | } |
12465 | ||
ad8e1ba5 | 12466 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12467 | if (stub_type != ppc_stub_plt_call |
12468 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12469 | { |
12470 | stub_entry->target_value = code_value; | |
12471 | stub_entry->target_section = code_sec; | |
12472 | } | |
12473 | else | |
12474 | { | |
12475 | stub_entry->target_value = sym_value; | |
12476 | stub_entry->target_section = sym_sec; | |
12477 | } | |
721956f4 | 12478 | stub_entry->h = hash; |
e054468f | 12479 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12480 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12481 | |
12482 | if (stub_entry->h != NULL) | |
12483 | htab->stub_globals += 1; | |
721956f4 AM |
12484 | } |
12485 | ||
12486 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12487 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12488 | free (internal_relocs); |
721956f4 | 12489 | } |
6cdc0ccc AM |
12490 | |
12491 | if (local_syms != NULL | |
12492 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12493 | { | |
12494 | if (!info->keep_memory) | |
12495 | free (local_syms); | |
12496 | else | |
12497 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12498 | } | |
721956f4 AM |
12499 | } |
12500 | ||
5c3dead3 | 12501 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12502 | stub sections. */ |
e7d1c40c | 12503 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12504 | stub_sec != NULL; |
12505 | stub_sec = stub_sec->next) | |
e717da7e | 12506 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12507 | { |
5c3dead3 | 12508 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12509 | stub_sec->size = 0; |
12510 | stub_sec->reloc_count = 0; | |
84f5d08e | 12511 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12512 | } |
eea6121a AM |
12513 | |
12514 | htab->brlt->size = 0; | |
84f5d08e AM |
12515 | htab->brlt->reloc_count = 0; |
12516 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12517 | if (htab->relbrlt != NULL) |
eea6121a | 12518 | htab->relbrlt->size = 0; |
721956f4 | 12519 | |
63bc6f6c | 12520 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12521 | |
a4b6fadd AM |
12522 | for (group = htab->group; group != NULL; group = group->next) |
12523 | if (group->needs_save_res) | |
12524 | group->stub_sec->size += htab->sfpr->size; | |
12525 | ||
176a0d42 AM |
12526 | if (info->emitrelocations |
12527 | && htab->glink != NULL && htab->glink->size != 0) | |
12528 | { | |
12529 | htab->glink->reloc_count = 1; | |
12530 | htab->glink->flags |= SEC_RELOC; | |
12531 | } | |
12532 | ||
58d180e8 AM |
12533 | if (htab->glink_eh_frame != NULL |
12534 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12535 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12536 | { |
4bbe044a | 12537 | size_t size = 0, align; |
58d180e8 | 12538 | |
e7d1c40c | 12539 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12540 | stub_sec != NULL; |
12541 | stub_sec = stub_sec->next) | |
12542 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
da44f4e5 | 12543 | size += 24; |
58d180e8 AM |
12544 | if (htab->glink != NULL && htab->glink->size != 0) |
12545 | size += 24; | |
12546 | if (size != 0) | |
12547 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12548 | align = 1; |
12549 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12550 | align -= 1; | |
12551 | size = (size + align) & ~align; | |
58d180e8 AM |
12552 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12553 | htab->glink_eh_frame->size = size; | |
12554 | } | |
12555 | ||
e7d1c40c AM |
12556 | if (htab->params->plt_stub_align != 0) |
12557 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12558 | stub_sec != NULL; |
12559 | stub_sec = stub_sec->next) | |
12560 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12561 | stub_sec->size = ((stub_sec->size |
12562 | + (1 << htab->params->plt_stub_align) - 1) | |
29f628db | 12563 | & -(1 << htab->params->plt_stub_align)); |
794e51c0 | 12564 | |
e7d1c40c | 12565 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12566 | stub_sec != NULL; |
12567 | stub_sec = stub_sec->next) | |
12568 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12569 | && stub_sec->rawsize != stub_sec->size) | |
12570 | break; | |
12571 | ||
12572 | /* Exit from this loop when no stubs have been added, and no stubs | |
12573 | have changed size. */ | |
58d180e8 AM |
12574 | if (stub_sec == NULL |
12575 | && (htab->glink_eh_frame == NULL | |
12576 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12577 | break; |
12578 | ||
721956f4 | 12579 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12580 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12581 | } |
12582 | ||
da44f4e5 AM |
12583 | if (htab->glink_eh_frame != NULL |
12584 | && htab->glink_eh_frame->size != 0) | |
12585 | { | |
12586 | bfd_vma val; | |
12587 | bfd_byte *p, *last_fde; | |
12588 | size_t last_fde_len, size, align, pad; | |
12589 | asection *stub_sec; | |
12590 | ||
12591 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12592 | if (p == NULL) | |
12593 | return FALSE; | |
12594 | htab->glink_eh_frame->contents = p; | |
12595 | last_fde = p; | |
12596 | ||
12597 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12598 | /* CIE length (rewrite in case little-endian). */ | |
12599 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
12600 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
12601 | p += sizeof (glink_eh_frame_cie); | |
12602 | ||
12603 | for (stub_sec = htab->params->stub_bfd->sections; | |
12604 | stub_sec != NULL; | |
12605 | stub_sec = stub_sec->next) | |
12606 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12607 | { | |
12608 | last_fde = p; | |
12609 | last_fde_len = 20; | |
12610 | /* FDE length. */ | |
12611 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12612 | p += 4; | |
12613 | /* CIE pointer. */ | |
12614 | val = p - htab->glink_eh_frame->contents; | |
12615 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12616 | p += 4; | |
12617 | /* Offset to stub section, written later. */ | |
12618 | p += 4; | |
12619 | /* stub section size. */ | |
12620 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
12621 | p += 4; | |
12622 | /* Augmentation. */ | |
12623 | p += 1; | |
12624 | /* Pad. */ | |
12625 | p += 7; | |
12626 | } | |
12627 | if (htab->glink != NULL && htab->glink->size != 0) | |
12628 | { | |
12629 | last_fde = p; | |
12630 | last_fde_len = 20; | |
12631 | /* FDE length. */ | |
12632 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12633 | p += 4; | |
12634 | /* CIE pointer. */ | |
12635 | val = p - htab->glink_eh_frame->contents; | |
12636 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12637 | p += 4; | |
12638 | /* Offset to .glink, written later. */ | |
12639 | p += 4; | |
12640 | /* .glink size. */ | |
12641 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12642 | p += 4; | |
12643 | /* Augmentation. */ | |
12644 | p += 1; | |
12645 | ||
12646 | *p++ = DW_CFA_advance_loc + 1; | |
12647 | *p++ = DW_CFA_register; | |
12648 | *p++ = 65; | |
9f08fa5c | 12649 | *p++ = htab->opd_abi ? 12 : 0; |
da44f4e5 AM |
12650 | *p++ = DW_CFA_advance_loc + 4; |
12651 | *p++ = DW_CFA_restore_extended; | |
12652 | *p++ = 65; | |
12653 | } | |
12654 | /* Subsume any padding into the last FDE if user .eh_frame | |
12655 | sections are aligned more than glink_eh_frame. Otherwise any | |
12656 | zero padding will be seen as a terminator. */ | |
12657 | size = p - htab->glink_eh_frame->contents; | |
12658 | align = 1; | |
12659 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12660 | align -= 1; | |
12661 | pad = ((size + align) & ~align) - size; | |
12662 | htab->glink_eh_frame->size = size + pad; | |
12663 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12664 | } | |
12665 | ||
d969d15f AM |
12666 | maybe_strip_output (info, htab->brlt); |
12667 | if (htab->glink_eh_frame != NULL) | |
12668 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12669 | |
b34976b6 | 12670 | return TRUE; |
721956f4 AM |
12671 | } |
12672 | ||
12673 | /* Called after we have determined section placement. If sections | |
805fc799 | 12674 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12675 | |
805fc799 | 12676 | bfd_vma |
1c865ab2 | 12677 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12678 | { |
805fc799 | 12679 | asection *s; |
a27e685f | 12680 | bfd_vma TOCstart, adjust; |
721956f4 | 12681 | |
43417696 AM |
12682 | if (info != NULL) |
12683 | { | |
12684 | struct elf_link_hash_entry *h; | |
12685 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12686 | ||
12687 | if (is_elf_hash_table (htab) | |
12688 | && htab->hgot != NULL) | |
12689 | h = htab->hgot; | |
12690 | else | |
12691 | { | |
12692 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12693 | if (is_elf_hash_table (htab)) | |
12694 | htab->hgot = h; | |
12695 | } | |
12696 | if (h != NULL | |
12697 | && h->root.type == bfd_link_hash_defined | |
12698 | && !h->root.linker_def | |
12699 | && (!is_elf_hash_table (htab) | |
12700 | || h->def_regular)) | |
12701 | { | |
12702 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12703 | + h->root.u.def.section->output_offset | |
12704 | + h->root.u.def.section->output_section->vma); | |
12705 | _bfd_set_gp_value (obfd, TOCstart); | |
12706 | return TOCstart; | |
12707 | } | |
12708 | } | |
12709 | ||
805fc799 AM |
12710 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12711 | order. The TOC starts where the first of these sections starts. */ | |
12712 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12713 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12714 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12715 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12716 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12717 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12718 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12719 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12720 | { |
12721 | /* This may happen for | |
12722 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12723 | .toc directive | |
12724 | o bad linker script | |
12725 | o --gc-sections and empty TOC sections | |
12726 | ||
12727 | FIXME: Warn user? */ | |
12728 | ||
12729 | /* Look for a likely section. We probably won't even be | |
12730 | using TOCstart. */ | |
12731 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12732 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12733 | | SEC_EXCLUDE)) | |
805fc799 AM |
12734 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12735 | break; | |
721956f4 | 12736 | if (s == NULL) |
805fc799 | 12737 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12738 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12739 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12740 | break; | |
721956f4 | 12741 | if (s == NULL) |
805fc799 | 12742 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12743 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12744 | == SEC_ALLOC) | |
805fc799 | 12745 | break; |
721956f4 | 12746 | if (s == NULL) |
805fc799 | 12747 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12748 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12749 | break; |
12750 | } | |
721956f4 | 12751 | |
805fc799 AM |
12752 | TOCstart = 0; |
12753 | if (s != NULL) | |
12754 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12755 | |
a27e685f AM |
12756 | /* Force alignment. */ |
12757 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12758 | TOCstart -= adjust; | |
1c865ab2 AM |
12759 | _bfd_set_gp_value (obfd, TOCstart); |
12760 | ||
810d4e75 | 12761 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12762 | { |
12763 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12764 | ||
810d4e75 AM |
12765 | if (htab != NULL) |
12766 | { | |
12767 | if (htab->elf.hgot != NULL) | |
12768 | { | |
a27e685f | 12769 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12770 | htab->elf.hgot->root.u.def.section = s; |
12771 | } | |
12772 | } | |
12773 | else | |
1c865ab2 | 12774 | { |
810d4e75 AM |
12775 | struct bfd_link_hash_entry *bh = NULL; |
12776 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12777 | s, TOC_BASE_OFF - adjust, |
12778 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12779 | } |
12780 | } | |
805fc799 | 12781 | return TOCstart; |
721956f4 AM |
12782 | } |
12783 | ||
a345bc8d AM |
12784 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12785 | write out any global entry stubs. */ | |
12786 | ||
12787 | static bfd_boolean | |
12788 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12789 | { | |
12790 | struct bfd_link_info *info; | |
12791 | struct ppc_link_hash_table *htab; | |
12792 | struct plt_entry *pent; | |
12793 | asection *s; | |
12794 | ||
12795 | if (h->root.type == bfd_link_hash_indirect) | |
12796 | return TRUE; | |
12797 | ||
12798 | if (!h->pointer_equality_needed) | |
12799 | return TRUE; | |
12800 | ||
12801 | if (h->def_regular) | |
12802 | return TRUE; | |
12803 | ||
12804 | info = inf; | |
12805 | htab = ppc_hash_table (info); | |
12806 | if (htab == NULL) | |
12807 | return FALSE; | |
12808 | ||
12809 | s = htab->glink; | |
12810 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12811 | if (pent->plt.offset != (bfd_vma) -1 | |
12812 | && pent->addend == 0) | |
12813 | { | |
12814 | bfd_byte *p; | |
12815 | asection *plt; | |
12816 | bfd_vma off; | |
12817 | ||
a345bc8d | 12818 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12819 | plt = htab->elf.splt; |
a345bc8d AM |
12820 | if (!htab->elf.dynamic_sections_created |
12821 | || h->dynindx == -1) | |
33e44f2e | 12822 | plt = htab->elf.iplt; |
a345bc8d AM |
12823 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12824 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12825 | ||
12826 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12827 | { | |
12828 | info->callbacks->einfo | |
12829 | (_("%P: linkage table error against `%T'\n"), | |
12830 | h->root.root.string); | |
12831 | bfd_set_error (bfd_error_bad_value); | |
12832 | htab->stub_error = TRUE; | |
12833 | } | |
12834 | ||
7341d5e2 AM |
12835 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12836 | if (htab->params->emit_stub_syms) | |
12837 | { | |
12838 | size_t len = strlen (h->root.root.string); | |
12839 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12840 | ||
12841 | if (name == NULL) | |
12842 | return FALSE; | |
12843 | ||
12844 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12845 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12846 | if (h == NULL) | |
12847 | return FALSE; | |
12848 | if (h->root.type == bfd_link_hash_new) | |
12849 | { | |
12850 | h->root.type = bfd_link_hash_defined; | |
12851 | h->root.u.def.section = s; | |
12852 | h->root.u.def.value = p - s->contents; | |
12853 | h->ref_regular = 1; | |
12854 | h->def_regular = 1; | |
12855 | h->ref_regular_nonweak = 1; | |
12856 | h->forced_local = 1; | |
12857 | h->non_elf = 0; | |
2ec55de3 | 12858 | h->root.linker_def = 1; |
7341d5e2 AM |
12859 | } |
12860 | } | |
12861 | ||
a345bc8d AM |
12862 | if (PPC_HA (off) != 0) |
12863 | { | |
12864 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12865 | p += 4; | |
12866 | } | |
12867 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12868 | p += 4; | |
12869 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12870 | p += 4; | |
12871 | bfd_put_32 (s->owner, BCTR, p); | |
12872 | break; | |
12873 | } | |
12874 | return TRUE; | |
12875 | } | |
12876 | ||
721956f4 AM |
12877 | /* Build all the stubs associated with the current output file. |
12878 | The stubs are kept in a hash table attached to the main linker | |
12879 | hash table. This function is called via gldelf64ppc_finish. */ | |
12880 | ||
b34976b6 | 12881 | bfd_boolean |
e7d1c40c | 12882 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12883 | char **stats) |
5d1634d7 AM |
12884 | { |
12885 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 12886 | struct map_stub *group; |
721956f4 | 12887 | asection *stub_sec; |
5d1634d7 | 12888 | bfd_byte *p; |
e717da7e | 12889 | int stub_sec_count = 0; |
5d1634d7 | 12890 | |
4dfe6ac6 NC |
12891 | if (htab == NULL) |
12892 | return FALSE; | |
12893 | ||
eea6121a | 12894 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12895 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12896 | stub_sec != NULL; |
12897 | stub_sec = stub_sec->next) | |
eea6121a AM |
12898 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12899 | && stub_sec->size != 0) | |
e717da7e | 12900 | { |
e7d1c40c | 12901 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12902 | if (stub_sec->contents == NULL) |
12903 | return FALSE; | |
12904 | /* We want to check that built size is the same as calculated | |
12905 | size. rawsize is a convenient location to use. */ | |
12906 | stub_sec->rawsize = stub_sec->size; | |
12907 | stub_sec->size = 0; | |
e717da7e | 12908 | } |
5d1634d7 | 12909 | |
23eb7e01 | 12910 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12911 | { |
9f951329 | 12912 | unsigned int indx; |
ad8e1ba5 | 12913 | bfd_vma plt0; |
9f951329 | 12914 | |
721956f4 | 12915 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12916 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12917 | { |
12918 | struct elf_link_hash_entry *h; | |
468392fb AM |
12919 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12920 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12921 | if (h == NULL) |
12922 | return FALSE; | |
12923 | if (h->root.type == bfd_link_hash_new) | |
12924 | { | |
12925 | h->root.type = bfd_link_hash_defined; | |
12926 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12927 | h->root.u.def.value = 8; |
f5385ebf AM |
12928 | h->ref_regular = 1; |
12929 | h->def_regular = 1; | |
12930 | h->ref_regular_nonweak = 1; | |
12931 | h->forced_local = 1; | |
12932 | h->non_elf = 0; | |
2ec55de3 | 12933 | h->root.linker_def = 1; |
97b639ba AM |
12934 | } |
12935 | } | |
33e44f2e AM |
12936 | plt0 = (htab->elf.splt->output_section->vma |
12937 | + htab->elf.splt->output_offset | |
12938 | - 16); | |
176a0d42 AM |
12939 | if (info->emitrelocations) |
12940 | { | |
12941 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12942 | if (r == NULL) | |
12943 | return FALSE; | |
12944 | r->r_offset = (htab->glink->output_offset | |
12945 | + htab->glink->output_section->vma); | |
12946 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12947 | r->r_addend = plt0; | |
12948 | } | |
4ce794b7 | 12949 | p = htab->glink->contents; |
176a0d42 | 12950 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12951 | bfd_put_64 (htab->glink->owner, plt0, p); |
12952 | p += 8; | |
b9e5796b AM |
12953 | if (htab->opd_abi) |
12954 | { | |
12955 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12956 | p += 4; | |
12957 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12958 | p += 4; | |
12959 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12960 | p += 4; | |
12961 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12962 | p += 4; | |
12963 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12964 | p += 4; | |
12965 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12966 | p += 4; | |
12967 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12968 | p += 4; | |
12969 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12970 | p += 4; | |
12971 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12972 | p += 4; | |
12973 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12974 | p += 4; | |
12975 | } | |
12976 | else | |
12977 | { | |
12978 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12979 | p += 4; | |
12980 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12981 | p += 4; | |
12982 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12983 | p += 4; | |
12984 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12985 | p += 4; | |
12986 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12987 | p += 4; | |
12988 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12989 | p += 4; | |
12990 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12991 | p += 4; | |
12992 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12993 | p += 4; | |
12994 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12995 | p += 4; | |
12996 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12997 | p += 4; | |
12998 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12999 | p += 4; | |
13000 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13001 | p += 4; | |
13002 | } | |
4ce794b7 | 13003 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 13004 | p += 4; |
ee4bf8d2 AM |
13005 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
13006 | { | |
13007 | bfd_put_32 (htab->glink->owner, NOP, p); | |
13008 | p += 4; | |
13009 | } | |
ad8e1ba5 | 13010 | |
9f951329 AM |
13011 | /* Build the .glink lazy link call stubs. */ |
13012 | indx = 0; | |
a345bc8d | 13013 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 13014 | { |
b9e5796b | 13015 | if (htab->opd_abi) |
9f951329 | 13016 | { |
b9e5796b AM |
13017 | if (indx < 0x8000) |
13018 | { | |
13019 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13020 | p += 4; | |
13021 | } | |
13022 | else | |
13023 | { | |
13024 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13025 | p += 4; | |
13026 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13027 | p); | |
13028 | p += 4; | |
13029 | } | |
9f951329 | 13030 | } |
4ce794b7 | 13031 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13032 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13033 | indx++; |
9f951329 AM |
13034 | p += 4; |
13035 | } | |
a345bc8d AM |
13036 | |
13037 | /* Build .glink global entry stubs. */ | |
13038 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 13039 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 13040 | } |
5d1634d7 | 13041 | |
7341d5e2 | 13042 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13043 | { |
4ce794b7 | 13044 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13045 | htab->brlt->size); |
4ce794b7 | 13046 | if (htab->brlt->contents == NULL) |
b34976b6 | 13047 | return FALSE; |
721956f4 | 13048 | } |
ee75fd95 | 13049 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13050 | { |
13051 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13052 | htab->relbrlt->size); |
63bc6f6c AM |
13053 | if (htab->relbrlt->contents == NULL) |
13054 | return FALSE; | |
13055 | } | |
5d1634d7 | 13056 | |
721956f4 AM |
13057 | /* Build the stubs as directed by the stub hash table. */ |
13058 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13059 | |
a4b6fadd AM |
13060 | for (group = htab->group; group != NULL; group = group->next) |
13061 | if (group->needs_save_res) | |
13062 | { | |
13063 | stub_sec = group->stub_sec; | |
13064 | memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents, | |
13065 | htab->sfpr->size); | |
13066 | if (htab->params->emit_stub_syms) | |
13067 | { | |
13068 | unsigned int i; | |
13069 | ||
13070 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13071 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13072 | return FALSE; | |
13073 | } | |
13074 | stub_sec->size += htab->sfpr->size; | |
13075 | } | |
13076 | ||
aa8a7074 AM |
13077 | if (htab->relbrlt != NULL) |
13078 | htab->relbrlt->reloc_count = 0; | |
13079 | ||
e7d1c40c AM |
13080 | if (htab->params->plt_stub_align != 0) |
13081 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
13082 | stub_sec != NULL; |
13083 | stub_sec = stub_sec->next) | |
13084 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
13085 | stub_sec->size = ((stub_sec->size |
13086 | + (1 << htab->params->plt_stub_align) - 1) | |
29f628db | 13087 | & -(1 << htab->params->plt_stub_align)); |
794e51c0 | 13088 | |
e7d1c40c | 13089 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
13090 | stub_sec != NULL; |
13091 | stub_sec = stub_sec->next) | |
e717da7e AM |
13092 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
13093 | { | |
13094 | stub_sec_count += 1; | |
eea6121a | 13095 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
13096 | break; |
13097 | } | |
5d1634d7 | 13098 | |
da44f4e5 AM |
13099 | /* Note that the glink_eh_frame check here is not only testing that |
13100 | the generated size matched the calculated size but also that | |
13101 | bfd_elf_discard_info didn't make any changes to the section. */ | |
721956f4 | 13102 | if (stub_sec != NULL |
58d180e8 AM |
13103 | || (htab->glink_eh_frame != NULL |
13104 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 13105 | { |
b34976b6 | 13106 | htab->stub_error = TRUE; |
8de848d8 | 13107 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 13108 | } |
721956f4 | 13109 | |
d2a300cf AM |
13110 | if (htab->stub_error) |
13111 | return FALSE; | |
13112 | ||
13113 | if (stats != NULL) | |
13114 | { | |
13115 | *stats = bfd_malloc (500); | |
13116 | if (*stats == NULL) | |
13117 | return FALSE; | |
13118 | ||
ee75fd95 | 13119 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
13120 | " branch %lu\n" |
13121 | " toc adjust %lu\n" | |
13122 | " long branch %lu\n" | |
13123 | " long toc adj %lu\n" | |
794e51c0 | 13124 | " plt call %lu\n" |
7341d5e2 AM |
13125 | " plt call toc %lu\n" |
13126 | " global entry %lu"), | |
e717da7e | 13127 | stub_sec_count, |
ee75fd95 | 13128 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
13129 | htab->stub_count[ppc_stub_long_branch - 1], |
13130 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13131 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13132 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13133 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13134 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13135 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13136 | } |
13137 | return TRUE; | |
5bd4f169 AM |
13138 | } |
13139 | ||
99877b66 AM |
13140 | /* This function undoes the changes made by add_symbol_adjust. */ |
13141 | ||
13142 | static bfd_boolean | |
13143 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
13144 | { | |
13145 | struct ppc_link_hash_entry *eh; | |
13146 | ||
13147 | if (h->root.type == bfd_link_hash_indirect) | |
13148 | return TRUE; | |
13149 | ||
99877b66 AM |
13150 | eh = (struct ppc_link_hash_entry *) h; |
13151 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
13152 | return TRUE; | |
13153 | ||
13154 | eh->elf.root.type = bfd_link_hash_undefined; | |
13155 | return TRUE; | |
13156 | } | |
13157 | ||
13158 | void | |
13159 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
13160 | { | |
13161 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
13162 | |
13163 | if (htab != NULL) | |
13164 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
13165 | } |
13166 | ||
60124e18 AM |
13167 | /* What to do when ld finds relocations against symbols defined in |
13168 | discarded sections. */ | |
13169 | ||
13170 | static unsigned int | |
13171 | ppc64_elf_action_discarded (asection *sec) | |
13172 | { | |
13173 | if (strcmp (".opd", sec->name) == 0) | |
13174 | return 0; | |
13175 | ||
13176 | if (strcmp (".toc", sec->name) == 0) | |
13177 | return 0; | |
13178 | ||
bce50a28 JJ |
13179 | if (strcmp (".toc1", sec->name) == 0) |
13180 | return 0; | |
13181 | ||
60124e18 AM |
13182 | return _bfd_elf_default_action_discarded (sec); |
13183 | } | |
13184 | ||
5bd4f169 AM |
13185 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13186 | to handle the relocations for a section. | |
13187 | ||
13188 | The relocs are always passed as Rela structures; if the section | |
13189 | actually uses Rel structures, the r_addend field will always be | |
13190 | zero. | |
13191 | ||
13192 | This function is responsible for adjust the section contents as | |
13193 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13194 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13195 | necessary. |
13196 | ||
13197 | This function does not have to worry about setting the reloc | |
13198 | address or the reloc symbol index. | |
13199 | ||
13200 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13201 | ||
13202 | LOCAL_SECTIONS is an array giving the section in the input file | |
13203 | corresponding to the st_shndx field of each local symbol. | |
13204 | ||
13205 | The global hash table entry for the global symbols can be found | |
13206 | via elf_sym_hashes (input_bfd). | |
13207 | ||
1049f94e | 13208 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13209 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13210 | going to be the section symbol corresponding to the output | |
13211 | section, which means that the addend must be adjusted | |
13212 | accordingly. */ | |
13213 | ||
b34976b6 | 13214 | static bfd_boolean |
4ce794b7 AM |
13215 | ppc64_elf_relocate_section (bfd *output_bfd, |
13216 | struct bfd_link_info *info, | |
13217 | bfd *input_bfd, | |
13218 | asection *input_section, | |
13219 | bfd_byte *contents, | |
13220 | Elf_Internal_Rela *relocs, | |
13221 | Elf_Internal_Sym *local_syms, | |
13222 | asection **local_sections) | |
5bd4f169 | 13223 | { |
65f38f15 | 13224 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13225 | Elf_Internal_Shdr *symtab_hdr; |
13226 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13227 | Elf_Internal_Rela *rel; |
c316a17c | 13228 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13229 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13230 | Elf_Internal_Rela outrel; |
13231 | bfd_byte *loc; | |
411e1bfb | 13232 | struct got_entry **local_got_ents; |
5bd4f169 | 13233 | bfd_vma TOCstart; |
b34976b6 AM |
13234 | bfd_boolean ret = TRUE; |
13235 | bfd_boolean is_opd; | |
794e51c0 AM |
13236 | /* Assume 'at' branch hints. */ |
13237 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 13238 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 13239 | |
65f38f15 | 13240 | /* Initialize howto table if needed. */ |
5bd4f169 | 13241 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13242 | ppc_howto_init (); |
13243 | ||
65f38f15 | 13244 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13245 | if (htab == NULL) |
13246 | return FALSE; | |
ee75fd95 AM |
13247 | |
13248 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13249 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13250 | return TRUE; |
13251 | ||
0c8d6e5c | 13252 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13253 | |
411e1bfb | 13254 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13255 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13256 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13257 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13258 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13259 | |
c316a17c | 13260 | rel = wrel = relocs; |
5bd4f169 | 13261 | relend = relocs + input_section->reloc_count; |
c316a17c | 13262 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13263 | { |
04c9666a | 13264 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13265 | bfd_vma addend; |
5bd4f169 AM |
13266 | bfd_reloc_status_type r; |
13267 | Elf_Internal_Sym *sym; | |
13268 | asection *sec; | |
039b3fef AM |
13269 | struct elf_link_hash_entry *h_elf; |
13270 | struct ppc_link_hash_entry *h; | |
13271 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13272 | const char *sym_name; |
0d4792f7 | 13273 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13274 | bfd_vma toc_addend; |
f961d9dd AM |
13275 | unsigned char tls_mask, tls_gd, tls_type; |
13276 | unsigned char sym_type; | |
5bd4f169 | 13277 | bfd_vma relocation; |
b34976b6 AM |
13278 | bfd_boolean unresolved_reloc; |
13279 | bfd_boolean warned; | |
bc30df16 | 13280 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13281 | unsigned int insn; |
e11840f9 | 13282 | unsigned int mask; |
721956f4 AM |
13283 | struct ppc_stub_hash_entry *stub_entry; |
13284 | bfd_vma max_br_offset; | |
13285 | bfd_vma from; | |
c316a17c | 13286 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13287 | reloc_howto_type *howto; |
13288 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13289 | |
c316a17c AM |
13290 | again: |
13291 | orig_rel = *rel; | |
13292 | ||
4ce794b7 | 13293 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13294 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13295 | |
13296 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13297 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13298 | proper TOC base to use. */ | |
13299 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13300 | && wrel != relocs |
13301 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13302 | && is_opd) |
c316a17c | 13303 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13304 | |
4ce794b7 AM |
13305 | sym = NULL; |
13306 | sec = NULL; | |
039b3fef | 13307 | h_elf = NULL; |
4ce794b7 | 13308 | sym_name = NULL; |
b34976b6 AM |
13309 | unresolved_reloc = FALSE; |
13310 | warned = FALSE; | |
65f38f15 | 13311 | |
0b13192e | 13312 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13313 | { |
13314 | /* It's a local symbol. */ | |
74f0fb50 | 13315 | struct _opd_sec_data *opd; |
4025353c | 13316 | |
5bd4f169 AM |
13317 | sym = local_syms + r_symndx; |
13318 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13319 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13320 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13321 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13322 | opd = get_opd_info (sec); |
13323 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13324 | { |
51aecdc5 AM |
13325 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13326 | + rel->r_addend)]; | |
4025353c AM |
13327 | if (adjust == -1) |
13328 | relocation = 0; | |
13329 | else | |
4cc603a5 AM |
13330 | { |
13331 | /* If this is a relocation against the opd section sym | |
13332 | and we have edited .opd, adjust the reloc addend so | |
13333 | that ld -r and ld --emit-relocs output is correct. | |
13334 | If it is a reloc against some other .opd symbol, | |
13335 | then the symbol value will be adjusted later. */ | |
13336 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13337 | rel->r_addend += adjust; | |
13338 | else | |
13339 | relocation += adjust; | |
13340 | } | |
1e2f5b6e | 13341 | } |
5bd4f169 AM |
13342 | } |
13343 | else | |
13344 | { | |
62d887d4 L |
13345 | bfd_boolean ignored; |
13346 | ||
b2a8e766 AM |
13347 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13348 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13349 | h_elf, sec, relocation, |
62d887d4 | 13350 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13351 | sym_name = h_elf->root.root.string; |
13352 | sym_type = h_elf->type; | |
b69fdb4e AM |
13353 | if (sec != NULL |
13354 | && sec->owner == output_bfd | |
13355 | && strcmp (sec->name, ".opd") == 0) | |
13356 | { | |
13357 | /* This is a symbol defined in a linker script. All | |
13358 | such are defined in output sections, even those | |
13359 | defined by simple assignment from a symbol defined in | |
13360 | an input section. Transfer the symbol to an | |
13361 | appropriate input .opd section, so that a branch to | |
13362 | this symbol will be mapped to the location specified | |
13363 | by the opd entry. */ | |
13364 | struct bfd_link_order *lo; | |
13365 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13366 | if (lo->type == bfd_indirect_link_order) | |
13367 | { | |
13368 | asection *isec = lo->u.indirect.section; | |
13369 | if (h_elf->root.u.def.value >= isec->output_offset | |
13370 | && h_elf->root.u.def.value < (isec->output_offset | |
13371 | + isec->size)) | |
13372 | { | |
13373 | h_elf->root.u.def.value -= isec->output_offset; | |
13374 | h_elf->root.u.def.section = isec; | |
13375 | sec = isec; | |
13376 | break; | |
13377 | } | |
13378 | } | |
13379 | } | |
5bd4f169 | 13380 | } |
039b3fef | 13381 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13382 | |
dbaa2011 | 13383 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
13384 | { |
13385 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
13386 | input_bfd, input_section, | |
13387 | contents + rel->r_offset); | |
13388 | wrel->r_offset = rel->r_offset; | |
13389 | wrel->r_info = 0; | |
13390 | wrel->r_addend = 0; | |
13391 | ||
13392 | /* For ld -r, remove relocations in debug sections against | |
13393 | sections defined in discarded sections. Not done for | |
13394 | non-debug to preserve relocs in .eh_frame which the | |
13395 | eh_frame editing code expects to be present. */ | |
13396 | if (bfd_link_relocatable (info) | |
13397 | && (input_section->flags & SEC_DEBUGGING)) | |
13398 | wrel--; | |
13399 | ||
13400 | continue; | |
13401 | } | |
ab96bf03 | 13402 | |
0e1862bb | 13403 | if (bfd_link_relocatable (info)) |
c316a17c | 13404 | goto copy_reloc; |
ab96bf03 | 13405 | |
f40da81b AM |
13406 | if (h != NULL && &h->elf == htab->elf.hgot) |
13407 | { | |
6f20ed8a | 13408 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13409 | sec = bfd_abs_section_ptr; |
13410 | unresolved_reloc = FALSE; | |
13411 | } | |
13412 | ||
951fd09b AM |
13413 | /* TLS optimizations. Replace instruction sequences and relocs |
13414 | based on information we collected in tls_optimize. We edit | |
13415 | RELOCS so that --emit-relocs will output something sensible | |
13416 | for the final instruction stream. */ | |
13417 | tls_mask = 0; | |
13418 | tls_gd = 0; | |
0d4792f7 | 13419 | toc_symndx = 0; |
727fc41e AM |
13420 | if (h != NULL) |
13421 | tls_mask = h->tls_mask; | |
13422 | else if (local_got_ents != NULL) | |
411e1bfb | 13423 | { |
e054468f AM |
13424 | struct plt_entry **local_plt = (struct plt_entry **) |
13425 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13426 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13427 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13428 | tls_mask = lgot_masks[r_symndx]; |
13429 | } | |
13430 | if (tls_mask == 0 | |
13431 | && (r_type == R_PPC64_TLS | |
13432 | || r_type == R_PPC64_TLSGD | |
13433 | || r_type == R_PPC64_TLSLD)) | |
13434 | { | |
13435 | /* Check for toc tls entries. */ | |
f961d9dd | 13436 | unsigned char *toc_tls; |
0d4792f7 | 13437 | |
727fc41e AM |
13438 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13439 | &local_syms, rel, input_bfd)) | |
13440 | return FALSE; | |
0d4792f7 | 13441 | |
727fc41e AM |
13442 | if (toc_tls) |
13443 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13444 | } |
13445 | ||
13446 | /* Check that tls relocs are used with tls syms, and non-tls | |
13447 | relocs are used with non-tls syms. */ | |
cf35638d | 13448 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13449 | && r_type != R_PPC64_NONE |
13450 | && (h == NULL | |
039b3fef AM |
13451 | || h->elf.root.type == bfd_link_hash_defined |
13452 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13453 | && (IS_PPC64_TLS_RELOC (r_type) |
13454 | != (sym_type == STT_TLS | |
13455 | || (sym_type == STT_SECTION | |
13456 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13457 | { |
727fc41e AM |
13458 | if (tls_mask != 0 |
13459 | && (r_type == R_PPC64_TLS | |
13460 | || r_type == R_PPC64_TLSGD | |
13461 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13462 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13463 | ; | |
13464 | else | |
25f53a85 | 13465 | info->callbacks->einfo |
1d483afe | 13466 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13467 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13468 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13469 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13470 | ppc64_elf_howto_table[r_type]->name, |
13471 | sym_name); | |
411e1bfb AM |
13472 | } |
13473 | ||
13474 | /* Ensure reloc mapping code below stays sane. */ | |
13475 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13476 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13477 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13478 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13479 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13480 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13481 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13482 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13483 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13484 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13485 | abort (); | |
0d4792f7 | 13486 | |
411e1bfb AM |
13487 | switch (r_type) |
13488 | { | |
13489 | default: | |
411e1bfb AM |
13490 | break; |
13491 | ||
ba761f19 AM |
13492 | case R_PPC64_LO_DS_OPT: |
13493 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13494 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13495 | abort (); | |
13496 | insn += (14u << 26) - (58u << 26); | |
13497 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13498 | r_type = R_PPC64_TOC16_LO; | |
13499 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13500 | break; | |
13501 | ||
411e1bfb AM |
13502 | case R_PPC64_TOC16: |
13503 | case R_PPC64_TOC16_LO: | |
13504 | case R_PPC64_TOC16_DS: | |
13505 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13506 | { |
13507 | /* Check for toc tls entries. */ | |
f961d9dd | 13508 | unsigned char *toc_tls; |
951fd09b | 13509 | int retval; |
411e1bfb | 13510 | |
3a71aa26 AM |
13511 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13512 | &local_syms, rel, input_bfd); | |
951fd09b | 13513 | if (retval == 0) |
411e1bfb AM |
13514 | return FALSE; |
13515 | ||
13516 | if (toc_tls) | |
13517 | { | |
951fd09b | 13518 | tls_mask = *toc_tls; |
411e1bfb AM |
13519 | if (r_type == R_PPC64_TOC16_DS |
13520 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13521 | { |
13522 | if (tls_mask != 0 | |
13523 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13524 | goto toctprel; | |
13525 | } | |
411e1bfb | 13526 | else |
951fd09b AM |
13527 | { |
13528 | /* If we found a GD reloc pair, then we might be | |
13529 | doing a GD->IE transition. */ | |
13530 | if (retval == 2) | |
13531 | { | |
13532 | tls_gd = TLS_TPRELGD; | |
13533 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13534 | goto tls_ldgd_opt; |
951fd09b AM |
13535 | } |
13536 | else if (retval == 3) | |
13537 | { | |
13538 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13539 | goto tls_ldgd_opt; |
951fd09b AM |
13540 | } |
13541 | } | |
411e1bfb AM |
13542 | } |
13543 | } | |
13544 | break; | |
13545 | ||
9d6ded02 AM |
13546 | case R_PPC64_GOT_TPREL16_HI: |
13547 | case R_PPC64_GOT_TPREL16_HA: | |
13548 | if (tls_mask != 0 | |
13549 | && (tls_mask & TLS_TPREL) == 0) | |
13550 | { | |
13551 | rel->r_offset -= d_offset; | |
13552 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13553 | r_type = R_PPC64_NONE; | |
13554 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13555 | } | |
13556 | break; | |
13557 | ||
411e1bfb AM |
13558 | case R_PPC64_GOT_TPREL16_DS: |
13559 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13560 | if (tls_mask != 0 |
13561 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13562 | { |
81407a69 | 13563 | toctprel: |
c316a17c AM |
13564 | insn = bfd_get_32 (output_bfd, |
13565 | contents + rel->r_offset - d_offset); | |
411e1bfb AM |
13566 | insn &= 31 << 21; |
13567 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
c316a17c AM |
13568 | bfd_put_32 (output_bfd, insn, |
13569 | contents + rel->r_offset - d_offset); | |
411e1bfb | 13570 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13571 | if (toc_symndx != 0) |
13572 | { | |
13573 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13574 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13575 | /* We changed the symbol. Start over in order to |
13576 | get h, sym, sec etc. right. */ | |
c316a17c | 13577 | goto again; |
0d4792f7 AM |
13578 | } |
13579 | else | |
13580 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13581 | } |
13582 | break; | |
13583 | ||
13584 | case R_PPC64_TLS: | |
951fd09b AM |
13585 | if (tls_mask != 0 |
13586 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13587 | { |
411e1bfb | 13588 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13589 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13590 | if (insn == 0) | |
411e1bfb | 13591 | abort (); |
411e1bfb | 13592 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13593 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13594 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13595 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13596 | r_type = R_PPC64_TPREL16_LO; |
13597 | if (toc_symndx != 0) | |
13598 | { | |
13599 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13600 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13601 | /* We changed the symbol. Start over in order to |
13602 | get h, sym, sec etc. right. */ | |
c316a17c | 13603 | goto again; |
0d4792f7 AM |
13604 | } |
13605 | else | |
13606 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13607 | } |
13608 | break; | |
13609 | ||
411e1bfb AM |
13610 | case R_PPC64_GOT_TLSGD16_HI: |
13611 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13612 | tls_gd = TLS_TPRELGD; |
13613 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13614 | goto tls_gdld_hi; | |
13615 | break; | |
13616 | ||
411e1bfb AM |
13617 | case R_PPC64_GOT_TLSLD16_HI: |
13618 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13619 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13620 | { |
951fd09b AM |
13621 | tls_gdld_hi: |
13622 | if ((tls_mask & tls_gd) != 0) | |
13623 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13624 | + R_PPC64_GOT_TPREL16_DS); | |
13625 | else | |
411e1bfb | 13626 | { |
4fe5ca5b | 13627 | rel->r_offset -= d_offset; |
727ac201 | 13628 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13629 | r_type = R_PPC64_NONE; |
411e1bfb | 13630 | } |
951fd09b | 13631 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13632 | } |
13633 | break; | |
13634 | ||
951fd09b AM |
13635 | case R_PPC64_GOT_TLSGD16: |
13636 | case R_PPC64_GOT_TLSGD16_LO: | |
13637 | tls_gd = TLS_TPRELGD; | |
13638 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13639 | goto tls_ldgd_opt; |
951fd09b | 13640 | break; |
411e1bfb | 13641 | |
951fd09b AM |
13642 | case R_PPC64_GOT_TLSLD16: |
13643 | case R_PPC64_GOT_TLSLD16_LO: | |
13644 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13645 | { | |
3a71aa26 | 13646 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13647 | bfd_vma offset; |
13648 | ||
13649 | tls_ldgd_opt: | |
727fc41e AM |
13650 | offset = (bfd_vma) -1; |
13651 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13652 | __tls_get_addr calls, we must trust that the call | |
13653 | stays with its arg setup insns, ie. that the next | |
13654 | reloc is the __tls_get_addr call associated with | |
13655 | the current reloc. Edit both insns. */ | |
13656 | if (input_section->has_tls_get_addr_call | |
13657 | && rel + 1 < relend | |
13658 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13659 | htab->tls_get_addr, | |
13660 | htab->tls_get_addr_fd)) | |
13661 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13662 | /* We read the low GOT_TLS (or TOC16) insn because we |
13663 | need to keep the destination reg. It may be | |
13664 | something other than the usual r3, and moved to r3 | |
13665 | before the call by intervening code. */ | |
13666 | insn1 = bfd_get_32 (output_bfd, | |
13667 | contents + rel->r_offset - d_offset); | |
102890f0 | 13668 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13669 | { |
102890f0 | 13670 | /* IE */ |
b86ac8e3 | 13671 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13672 | insn1 |= 58 << 26; /* ld */ |
13673 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13674 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13675 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13676 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13677 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13678 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13679 | else |
102890f0 AM |
13680 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13681 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13682 | } | |
13683 | else | |
13684 | { | |
13685 | /* LE */ | |
b86ac8e3 AM |
13686 | insn1 &= 0x1f << 21; |
13687 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13688 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13689 | if (tls_gd == 0) | |
951fd09b | 13690 | { |
102890f0 | 13691 | /* Was an LD reloc. */ |
1d483afe AM |
13692 | if (toc_symndx) |
13693 | sec = local_sections[toc_symndx]; | |
13694 | for (r_symndx = 0; | |
13695 | r_symndx < symtab_hdr->sh_info; | |
13696 | r_symndx++) | |
13697 | if (local_sections[r_symndx] == sec) | |
13698 | break; | |
13699 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13700 | r_symndx = STN_UNDEF; |
102890f0 | 13701 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13702 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13703 | rel->r_addend -= (local_syms[r_symndx].st_value |
13704 | + sec->output_offset | |
13705 | + sec->output_section->vma); | |
951fd09b | 13706 | } |
102890f0 | 13707 | else if (toc_symndx != 0) |
3a71aa26 AM |
13708 | { |
13709 | r_symndx = toc_symndx; | |
13710 | rel->r_addend = toc_addend; | |
13711 | } | |
102890f0 AM |
13712 | r_type = R_PPC64_TPREL16_HA; |
13713 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13714 | if (offset != (bfd_vma) -1) |
13715 | { | |
13716 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13717 | R_PPC64_TPREL16_LO); | |
13718 | rel[1].r_offset = offset + d_offset; | |
13719 | rel[1].r_addend = rel->r_addend; | |
13720 | } | |
102890f0 | 13721 | } |
3a71aa26 AM |
13722 | bfd_put_32 (output_bfd, insn1, |
13723 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13724 | if (offset != (bfd_vma) -1) |
13725 | { | |
13726 | insn3 = bfd_get_32 (output_bfd, | |
13727 | contents + offset + 4); | |
13728 | if (insn3 == NOP | |
13729 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13730 | { | |
13731 | rel[1].r_offset += 4; | |
13732 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13733 | insn2 = NOP; | |
13734 | } | |
13735 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13736 | } | |
13737 | if ((tls_mask & tls_gd) == 0 | |
13738 | && (tls_gd == 0 || toc_symndx != 0)) | |
13739 | { | |
13740 | /* We changed the symbol. Start over in order | |
13741 | to get h, sym, sec etc. right. */ | |
c316a17c | 13742 | goto again; |
727fc41e AM |
13743 | } |
13744 | } | |
13745 | break; | |
13746 | ||
13747 | case R_PPC64_TLSGD: | |
13748 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13749 | { | |
13750 | unsigned int insn2, insn3; | |
13751 | bfd_vma offset = rel->r_offset; | |
13752 | ||
13753 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13754 | { | |
13755 | /* IE */ | |
13756 | r_type = R_PPC64_NONE; | |
13757 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13758 | } | |
13759 | else | |
13760 | { | |
13761 | /* LE */ | |
13762 | if (toc_symndx != 0) | |
13763 | { | |
13764 | r_symndx = toc_symndx; | |
13765 | rel->r_addend = toc_addend; | |
13766 | } | |
13767 | r_type = R_PPC64_TPREL16_LO; | |
13768 | rel->r_offset = offset + d_offset; | |
13769 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13770 | } | |
13771 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13772 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13773 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13774 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13775 | insn3 = bfd_get_32 (output_bfd, |
13776 | contents + offset + 4); | |
102890f0 AM |
13777 | if (insn3 == NOP |
13778 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13779 | { | |
727fc41e | 13780 | rel->r_offset += 4; |
3a71aa26 AM |
13781 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13782 | insn2 = NOP; | |
102890f0 | 13783 | } |
102890f0 | 13784 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13785 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 13786 | goto again; |
411e1bfb | 13787 | } |
411e1bfb AM |
13788 | break; |
13789 | ||
727fc41e AM |
13790 | case R_PPC64_TLSLD: |
13791 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13792 | { | |
13793 | unsigned int insn2, insn3; | |
13794 | bfd_vma offset = rel->r_offset; | |
13795 | ||
13796 | if (toc_symndx) | |
13797 | sec = local_sections[toc_symndx]; | |
13798 | for (r_symndx = 0; | |
13799 | r_symndx < symtab_hdr->sh_info; | |
13800 | r_symndx++) | |
13801 | if (local_sections[r_symndx] == sec) | |
13802 | break; | |
13803 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13804 | r_symndx = STN_UNDEF; |
727fc41e | 13805 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13806 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13807 | rel->r_addend -= (local_syms[r_symndx].st_value |
13808 | + sec->output_offset | |
13809 | + sec->output_section->vma); | |
13810 | ||
13811 | r_type = R_PPC64_TPREL16_LO; | |
13812 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13813 | rel->r_offset = offset + d_offset; | |
13814 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13815 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13816 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13817 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13818 | insn3 = bfd_get_32 (output_bfd, | |
13819 | contents + offset + 4); | |
13820 | if (insn3 == NOP | |
13821 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13822 | { | |
13823 | rel->r_offset += 4; | |
13824 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13825 | insn2 = NOP; | |
13826 | } | |
13827 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
c316a17c | 13828 | goto again; |
727fc41e AM |
13829 | } |
13830 | break; | |
13831 | ||
411e1bfb | 13832 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13833 | if (rel + 1 < relend |
13834 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13835 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13836 | { |
951fd09b AM |
13837 | if ((tls_mask & TLS_GD) == 0) |
13838 | { | |
13839 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13840 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13841 | r_type = R_PPC64_TPREL64; | |
13842 | else | |
13843 | { | |
4ce794b7 | 13844 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13845 | r_type = R_PPC64_NONE; |
13846 | } | |
13847 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13848 | } | |
13849 | } | |
13850 | else | |
13851 | { | |
13852 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13853 | { |
4ce794b7 | 13854 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13855 | r_type = R_PPC64_NONE; |
951fd09b | 13856 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13857 | } |
411e1bfb AM |
13858 | } |
13859 | break; | |
13860 | ||
13861 | case R_PPC64_TPREL64: | |
951fd09b | 13862 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13863 | { |
13864 | r_type = R_PPC64_NONE; | |
13865 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13866 | } | |
13867 | break; | |
52a82034 | 13868 | |
006589cf AM |
13869 | case R_PPC64_ENTRY: |
13870 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
13871 | if (!bfd_link_pic (info) | |
13872 | && !info->traditional_format | |
13873 | && relocation + 0x80008000 <= 0xffffffff) | |
13874 | { | |
13875 | unsigned int insn1, insn2; | |
13876 | ||
13877 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13878 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13879 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13880 | && insn2 == ADD_R2_R2_R12) | |
13881 | { | |
13882 | bfd_put_32 (output_bfd, | |
13883 | LIS_R2 + PPC_HA (relocation), | |
13884 | contents + rel->r_offset); | |
13885 | bfd_put_32 (output_bfd, | |
13886 | ADDI_R2_R2 + PPC_LO (relocation), | |
13887 | contents + rel->r_offset + 4); | |
13888 | } | |
13889 | } | |
13890 | else | |
13891 | { | |
13892 | relocation -= (rel->r_offset | |
13893 | + input_section->output_offset | |
13894 | + input_section->output_section->vma); | |
13895 | if (relocation + 0x80008000 <= 0xffffffff) | |
13896 | { | |
13897 | unsigned int insn1, insn2; | |
13898 | ||
13899 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13900 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13901 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13902 | && insn2 == ADD_R2_R2_R12) | |
13903 | { | |
13904 | bfd_put_32 (output_bfd, | |
13905 | ADDIS_R2_R12 + PPC_HA (relocation), | |
13906 | contents + rel->r_offset); | |
13907 | bfd_put_32 (output_bfd, | |
13908 | ADDI_R2_R2 + PPC_LO (relocation), | |
13909 | contents + rel->r_offset + 4); | |
13910 | } | |
13911 | } | |
13912 | } | |
13913 | break; | |
13914 | ||
52a82034 AM |
13915 | case R_PPC64_REL16_HA: |
13916 | /* If we are generating a non-PIC executable, edit | |
13917 | . 0: addis 2,12,.TOC.-0b@ha | |
13918 | . addi 2,2,.TOC.-0b@l | |
13919 | used by ELFv2 global entry points to set up r2, to | |
13920 | . lis 2,.TOC.@ha | |
13921 | . addi 2,2,.TOC.@l | |
13922 | if .TOC. is in range. */ | |
0e1862bb | 13923 | if (!bfd_link_pic (info) |
810d4e75 | 13924 | && !info->traditional_format |
006589cf | 13925 | && !htab->opd_abi |
4f038ee5 | 13926 | && rel->r_addend == d_offset |
52a82034 AM |
13927 | && h != NULL && &h->elf == htab->elf.hgot |
13928 | && rel + 1 < relend | |
13929 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13930 | && rel[1].r_offset == rel->r_offset + 4 | |
13931 | && rel[1].r_addend == rel->r_addend + 4 | |
13932 | && relocation + 0x80008000 <= 0xffffffff) | |
13933 | { | |
13934 | unsigned int insn1, insn2; | |
13935 | bfd_vma offset = rel->r_offset - d_offset; | |
13936 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13937 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
006589cf AM |
13938 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
13939 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
13940 | { |
13941 | r_type = R_PPC64_ADDR16_HA; | |
13942 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13943 | rel->r_addend -= d_offset; | |
13944 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13945 | rel[1].r_addend -= d_offset + 4; | |
006589cf | 13946 | bfd_put_32 (output_bfd, LIS_R2, contents + offset); |
52a82034 AM |
13947 | } |
13948 | } | |
13949 | break; | |
411e1bfb AM |
13950 | } |
13951 | ||
13952 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13953 | insn = 0; |
b25116a9 AM |
13954 | max_br_offset = 1 << 25; |
13955 | addend = rel->r_addend; | |
bc30df16 | 13956 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13957 | switch (r_type) |
5bd4f169 AM |
13958 | { |
13959 | default: | |
65f38f15 | 13960 | break; |
5bd4f169 | 13961 | |
3b421ab3 AM |
13962 | case R_PPC64_TOCSAVE: |
13963 | if (relocation + addend == (rel->r_offset | |
13964 | + input_section->output_offset | |
13965 | + input_section->output_section->vma) | |
13966 | && tocsave_find (htab, NO_INSERT, | |
13967 | &local_syms, rel, input_bfd)) | |
13968 | { | |
13969 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13970 | if (insn == NOP | |
13971 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13972 | bfd_put_32 (input_bfd, |
13973 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13974 | contents + rel->r_offset); |
13975 | } | |
13976 | break; | |
13977 | ||
65f38f15 AM |
13978 | /* Branch taken prediction relocations. */ |
13979 | case R_PPC64_ADDR14_BRTAKEN: | |
13980 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13981 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13982 | /* Fall thru. */ | |
65f38f15 | 13983 | |
86c76c7b | 13984 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13985 | case R_PPC64_ADDR14_BRNTAKEN: |
13986 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13987 | insn |= bfd_get_32 (output_bfd, |
13988 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13989 | /* Fall thru. */ |
86c76c7b | 13990 | |
b25116a9 AM |
13991 | case R_PPC64_REL14: |
13992 | max_br_offset = 1 << 15; | |
13993 | /* Fall thru. */ | |
5bd4f169 | 13994 | |
65f38f15 | 13995 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13996 | /* Calls to functions with a different TOC, such as calls to |
13997 | shared objects, need to alter the TOC pointer. This is | |
13998 | done using a linkage stub. A REL24 branching to these | |
13999 | linkage stubs needs to be followed by a nop, as the nop | |
14000 | will be replaced with an instruction to restore the TOC | |
14001 | base pointer. */ | |
8387904d | 14002 | fdh = h; |
b31867b6 AM |
14003 | if (h != NULL |
14004 | && h->oh != NULL | |
14005 | && h->oh->is_func_descriptor) | |
14006 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14007 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14008 | htab); | |
6abec6bc | 14009 | if (stub_entry != NULL |
ad8e1ba5 | 14010 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14011 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14012 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14013 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14014 | { |
b25116a9 | 14015 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14016 | |
ba8ca3e7 AM |
14017 | /* All of these stubs will modify r2, so there must be a |
14018 | branch and link followed by a nop. The nop is | |
14019 | replaced by an insn to restore r2. */ | |
eea6121a | 14020 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14021 | { |
ba8ca3e7 AM |
14022 | unsigned long br; |
14023 | ||
14024 | br = bfd_get_32 (input_bfd, | |
14025 | contents + rel->r_offset); | |
14026 | if ((br & 1) != 0) | |
41bd81ab | 14027 | { |
ba8ca3e7 AM |
14028 | unsigned long nop; |
14029 | ||
14030 | nop = bfd_get_32 (input_bfd, | |
14031 | contents + rel->r_offset + 4); | |
14032 | if (nop == NOP | |
14033 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 14034 | { |
ba8ca3e7 AM |
14035 | if (h != NULL |
14036 | && (h == htab->tls_get_addr_fd | |
14037 | || h == htab->tls_get_addr) | |
7c9cf415 | 14038 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14039 | { |
14040 | /* Special stub used, leave nop alone. */ | |
14041 | } | |
14042 | else | |
a078d95a AM |
14043 | bfd_put_32 (input_bfd, |
14044 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14045 | contents + rel->r_offset + 4); |
14046 | can_plt_call = TRUE; | |
a7f2871e | 14047 | } |
41bd81ab | 14048 | } |
5bd4f169 | 14049 | } |
721956f4 | 14050 | |
ba8ca3e7 | 14051 | if (!can_plt_call && h != NULL) |
721956f4 | 14052 | { |
ba8ca3e7 AM |
14053 | const char *name = h->elf.root.root.string; |
14054 | ||
14055 | if (*name == '.') | |
14056 | ++name; | |
14057 | ||
14058 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14059 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14060 | { |
ba8ca3e7 AM |
14061 | /* Allow crt1 branch to go via a toc adjusting |
14062 | stub. Other calls that never return could do | |
14063 | the same, if we could detect such. */ | |
b25116a9 | 14064 | can_plt_call = TRUE; |
6ab189d5 | 14065 | } |
ba8ca3e7 AM |
14066 | } |
14067 | ||
14068 | if (!can_plt_call) | |
14069 | { | |
14070 | /* g++ as of 20130507 emits self-calls without a | |
14071 | following nop. This is arguably wrong since we | |
14072 | have conflicting information. On the one hand a | |
14073 | global symbol and on the other a local call | |
14074 | sequence, but don't error for this special case. | |
14075 | It isn't possible to cheaply verify we have | |
14076 | exactly such a call. Allow all calls to the same | |
14077 | section. */ | |
14078 | asection *code_sec = sec; | |
14079 | ||
14080 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14081 | { |
ba8ca3e7 AM |
14082 | bfd_vma off = (relocation + addend |
14083 | - sec->output_section->vma | |
14084 | - sec->output_offset); | |
bc30df16 | 14085 | |
ba8ca3e7 | 14086 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14087 | } |
ba8ca3e7 AM |
14088 | if (code_sec == input_section) |
14089 | can_plt_call = TRUE; | |
14090 | } | |
14091 | ||
14092 | if (!can_plt_call) | |
14093 | { | |
4805fc55 AM |
14094 | if (stub_entry->stub_type == ppc_stub_plt_call |
14095 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14096 | info->callbacks->einfo | |
14097 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
14098 | "recompile with -fPIC\n"), | |
14099 | input_bfd, input_section, rel->r_offset, sym_name); | |
14100 | else | |
14101 | info->callbacks->einfo | |
14102 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
14103 | "(-mcmodel=small toc adjust stub)\n"), | |
14104 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14105 | |
14106 | bfd_set_error (bfd_error_bad_value); | |
14107 | ret = FALSE; | |
721956f4 AM |
14108 | } |
14109 | ||
b25116a9 | 14110 | if (can_plt_call |
794e51c0 AM |
14111 | && (stub_entry->stub_type == ppc_stub_plt_call |
14112 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14113 | unresolved_reloc = FALSE; |
14114 | } | |
14115 | ||
6abec6bc AM |
14116 | if ((stub_entry == NULL |
14117 | || stub_entry->stub_type == ppc_stub_long_branch | |
14118 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14119 | && get_opd_info (sec) != NULL) |
14120 | { | |
14121 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14122 | bfd_vma off = (relocation + addend |
14123 | - sec->output_section->vma | |
14124 | - sec->output_offset); | |
aef36ac1 | 14125 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14126 | if (dest != (bfd_vma) -1) |
14127 | { | |
14128 | relocation = dest; | |
14129 | addend = 0; | |
bc30df16 | 14130 | reloc_dest = DEST_OPD; |
8387904d AM |
14131 | } |
14132 | } | |
14133 | ||
b25116a9 AM |
14134 | /* If the branch is out of reach we ought to have a long |
14135 | branch stub. */ | |
14136 | from = (rel->r_offset | |
14137 | + input_section->output_offset | |
14138 | + input_section->output_section->vma); | |
14139 | ||
6911b7dc AM |
14140 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14141 | ? fdh->elf.other | |
14142 | : sym->st_other); | |
14143 | ||
6abec6bc AM |
14144 | if (stub_entry != NULL |
14145 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14146 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14147 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14148 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14149 | || (relocation + addend - from + max_br_offset | |
14150 | < 2 * max_br_offset))) | |
14151 | /* Don't use the stub if this branch is in range. */ | |
14152 | stub_entry = NULL; | |
b25116a9 AM |
14153 | |
14154 | if (stub_entry != NULL) | |
14155 | { | |
14156 | /* Munge up the value and addend so that we call the stub | |
14157 | rather than the procedure directly. */ | |
a4b6fadd AM |
14158 | asection *stub_sec = stub_entry->group->stub_sec; |
14159 | ||
14160 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14161 | relocation += (stub_sec->output_offset | |
14162 | + stub_sec->output_section->vma | |
14163 | + stub_sec->size - htab->sfpr->size | |
14164 | - htab->sfpr->output_offset | |
14165 | - htab->sfpr->output_section->vma); | |
14166 | else | |
14167 | relocation = (stub_entry->stub_offset | |
14168 | + stub_sec->output_offset | |
14169 | + stub_sec->output_section->vma); | |
b25116a9 | 14170 | addend = 0; |
bc30df16 | 14171 | reloc_dest = DEST_STUB; |
3b421ab3 | 14172 | |
794e51c0 AM |
14173 | if ((stub_entry->stub_type == ppc_stub_plt_call |
14174 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14175 | && (ALWAYS_EMIT_R2SAVE | |
14176 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14177 | && rel + 1 < relend |
14178 | && rel[1].r_offset == rel->r_offset + 4 | |
14179 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14180 | relocation += 4; | |
b25116a9 AM |
14181 | } |
14182 | ||
14183 | if (insn != 0) | |
14184 | { | |
794e51c0 | 14185 | if (is_isa_v2) |
721956f4 | 14186 | { |
b25116a9 AM |
14187 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14188 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14189 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14190 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14191 | insn |= 0x02 << 21; | |
14192 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14193 | insn |= 0x08 << 21; | |
14194 | else | |
14195 | break; | |
14196 | } | |
14197 | else | |
14198 | { | |
14199 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14200 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14201 | insn ^= 0x01 << 21; |
721956f4 | 14202 | } |
b25116a9 AM |
14203 | |
14204 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 14205 | } |
e86ce104 | 14206 | |
06da1e8e AM |
14207 | /* NOP out calls to undefined weak functions. |
14208 | We can thus call a weak function without first | |
14209 | checking whether the function is defined. */ | |
b25116a9 | 14210 | else if (h != NULL |
039b3fef | 14211 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14212 | && h->elf.dynindx == -1 |
b25116a9 AM |
14213 | && r_type == R_PPC64_REL24 |
14214 | && relocation == 0 | |
4cc603a5 | 14215 | && addend == 0) |
e86ce104 | 14216 | { |
06da1e8e | 14217 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14218 | goto copy_reloc; |
e86ce104 | 14219 | } |
65f38f15 AM |
14220 | break; |
14221 | } | |
5bd4f169 | 14222 | |
65f38f15 | 14223 | /* Set `addend'. */ |
411e1bfb | 14224 | tls_type = 0; |
65f38f15 AM |
14225 | switch (r_type) |
14226 | { | |
14227 | default: | |
25f53a85 | 14228 | info->callbacks->einfo |
bc30df16 | 14229 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 14230 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 14231 | |
65f38f15 | 14232 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14233 | ret = FALSE; |
c316a17c | 14234 | goto copy_reloc; |
5bd4f169 | 14235 | |
65f38f15 | 14236 | case R_PPC64_NONE: |
411e1bfb | 14237 | case R_PPC64_TLS: |
727fc41e AM |
14238 | case R_PPC64_TLSGD: |
14239 | case R_PPC64_TLSLD: | |
3b421ab3 | 14240 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14241 | case R_PPC64_GNU_VTINHERIT: |
14242 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14243 | case R_PPC64_ENTRY: |
c316a17c | 14244 | goto copy_reloc; |
5bd4f169 AM |
14245 | |
14246 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14247 | address in the GOT as relocation value instead of the | |
411e1bfb | 14248 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14249 | symbol and put the symbol value there. */ |
411e1bfb AM |
14250 | case R_PPC64_GOT_TLSGD16: |
14251 | case R_PPC64_GOT_TLSGD16_LO: | |
14252 | case R_PPC64_GOT_TLSGD16_HI: | |
14253 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14254 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14255 | goto dogot; |
14256 | ||
14257 | case R_PPC64_GOT_TLSLD16: | |
14258 | case R_PPC64_GOT_TLSLD16_LO: | |
14259 | case R_PPC64_GOT_TLSLD16_HI: | |
14260 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14261 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14262 | goto dogot; |
14263 | ||
14264 | case R_PPC64_GOT_TPREL16_DS: | |
14265 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14266 | case R_PPC64_GOT_TPREL16_HI: | |
14267 | case R_PPC64_GOT_TPREL16_HA: | |
14268 | tls_type = TLS_TLS | TLS_TPREL; | |
14269 | goto dogot; | |
14270 | ||
14271 | case R_PPC64_GOT_DTPREL16_DS: | |
14272 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14273 | case R_PPC64_GOT_DTPREL16_HI: | |
14274 | case R_PPC64_GOT_DTPREL16_HA: | |
14275 | tls_type = TLS_TLS | TLS_DTPREL; | |
14276 | goto dogot; | |
14277 | ||
65f38f15 AM |
14278 | case R_PPC64_GOT16: |
14279 | case R_PPC64_GOT16_LO: | |
14280 | case R_PPC64_GOT16_HI: | |
14281 | case R_PPC64_GOT16_HA: | |
14282 | case R_PPC64_GOT16_DS: | |
14283 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14284 | dogot: |
5bd4f169 AM |
14285 | { |
14286 | /* Relocation is to the entry for this symbol in the global | |
14287 | offset table. */ | |
e717da7e | 14288 | asection *got; |
d881513a | 14289 | bfd_vma *offp; |
5bd4f169 | 14290 | bfd_vma off; |
d881513a | 14291 | unsigned long indx = 0; |
927be08e | 14292 | struct got_entry *ent; |
65f38f15 | 14293 | |
d881513a AM |
14294 | if (tls_type == (TLS_TLS | TLS_LD) |
14295 | && (h == NULL | |
f5385ebf | 14296 | || !h->elf.def_dynamic)) |
927be08e | 14297 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14298 | else |
5bd4f169 | 14299 | { |
5bd4f169 | 14300 | |
d881513a AM |
14301 | if (h != NULL) |
14302 | { | |
14303 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
0e1862bb | 14304 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), |
039b3fef | 14305 | &h->elf) |
0e1862bb | 14306 | || (bfd_link_pic (info) |
afe397ea | 14307 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
14308 | /* This is actually a static link, or it is a |
14309 | -Bsymbolic link and the symbol is defined | |
14310 | locally, or the symbol was forced to be local | |
14311 | because of a version file. */ | |
14312 | ; | |
14313 | else | |
14314 | { | |
14acf4dc | 14315 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 14316 | indx = h->elf.dynindx; |
d881513a AM |
14317 | unresolved_reloc = FALSE; |
14318 | } | |
039b3fef | 14319 | ent = h->elf.got.glist; |
d881513a | 14320 | } |
411e1bfb | 14321 | else |
5bd4f169 | 14322 | { |
d881513a AM |
14323 | if (local_got_ents == NULL) |
14324 | abort (); | |
14325 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14326 | } |
d881513a AM |
14327 | |
14328 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14329 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14330 | && ent->owner == input_bfd |
d881513a AM |
14331 | && ent->tls_type == tls_type) |
14332 | break; | |
5bd4f169 | 14333 | } |
411e1bfb | 14334 | |
927be08e AM |
14335 | if (ent == NULL) |
14336 | abort (); | |
14337 | if (ent->is_indirect) | |
14338 | ent = ent->got.ent; | |
14339 | offp = &ent->got.offset; | |
14340 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14341 | if (got == NULL) |
14342 | abort (); | |
14343 | ||
411e1bfb AM |
14344 | /* The offset must always be a multiple of 8. We use the |
14345 | least significant bit to record whether we have already | |
14346 | processed this entry. */ | |
d881513a | 14347 | off = *offp; |
411e1bfb AM |
14348 | if ((off & 1) != 0) |
14349 | off &= ~1; | |
5bd4f169 AM |
14350 | else |
14351 | { | |
411e1bfb AM |
14352 | /* Generate relocs for the dynamic linker, except in |
14353 | the case of TLSLD where we'll use one entry per | |
14354 | module. */ | |
25f23106 AM |
14355 | asection *relgot; |
14356 | bfd_boolean ifunc; | |
e717da7e | 14357 | |
d881513a | 14358 | *offp = off | 1; |
25f23106 AM |
14359 | relgot = NULL; |
14360 | ifunc = (h != NULL | |
14361 | ? h->elf.type == STT_GNU_IFUNC | |
14362 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14363 | if (ifunc) |
33e44f2e | 14364 | relgot = htab->elf.irelplt; |
0e1862bb | 14365 | else if ((bfd_link_pic (info) || indx != 0) |
19e08130 AM |
14366 | && (h == NULL |
14367 | || (tls_type == (TLS_TLS | TLS_LD) | |
14368 | && !h->elf.def_dynamic) | |
14369 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
14370 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
14371 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 14372 | if (relgot != NULL) |
5bd4f169 | 14373 | { |
e717da7e AM |
14374 | outrel.r_offset = (got->output_section->vma |
14375 | + got->output_offset | |
411e1bfb | 14376 | + off); |
4cc603a5 | 14377 | outrel.r_addend = addend; |
d881513a | 14378 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14379 | { |
411e1bfb | 14380 | outrel.r_addend = 0; |
e515b051 | 14381 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14382 | if (tls_type == (TLS_TLS | TLS_GD)) |
14383 | { | |
e717da7e AM |
14384 | loc = relgot->contents; |
14385 | loc += (relgot->reloc_count++ | |
d881513a AM |
14386 | * sizeof (Elf64_External_Rela)); |
14387 | bfd_elf64_swap_reloca_out (output_bfd, | |
14388 | &outrel, loc); | |
e515b051 | 14389 | outrel.r_offset += 8; |
4cc603a5 | 14390 | outrel.r_addend = addend; |
d881513a AM |
14391 | outrel.r_info |
14392 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14393 | } |
411e1bfb | 14394 | } |
951fd09b | 14395 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14396 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14397 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14398 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14399 | else if (indx != 0) |
14400 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14401 | else | |
81407a69 | 14402 | { |
25f23106 AM |
14403 | if (ifunc) |
14404 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14405 | else | |
14406 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14407 | |
14408 | /* Write the .got section contents for the sake | |
14409 | of prelink. */ | |
e717da7e | 14410 | loc = got->contents + off; |
23fbd6fa JJ |
14411 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14412 | loc); | |
81407a69 | 14413 | } |
81407a69 AM |
14414 | |
14415 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14416 | { |
14417 | outrel.r_addend += relocation; | |
14418 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14419 | { |
14420 | if (htab->elf.tls_sec == NULL) | |
14421 | outrel.r_addend = 0; | |
14422 | else | |
14423 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14424 | } | |
e515b051 | 14425 | } |
e717da7e AM |
14426 | loc = relgot->contents; |
14427 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14428 | * sizeof (Elf64_External_Rela)); |
14429 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14430 | } | |
14431 | ||
ad8e1ba5 | 14432 | /* Init the .got section contents here if we're not |
81407a69 | 14433 | emitting a reloc. */ |
d881513a | 14434 | else |
411e1bfb | 14435 | { |
4cc603a5 | 14436 | relocation += addend; |
7b609f53 AM |
14437 | if (tls_type == (TLS_TLS | TLS_LD)) |
14438 | relocation = 1; | |
14439 | else if (tls_type != 0) | |
411e1bfb | 14440 | { |
989f9879 AM |
14441 | if (htab->elf.tls_sec == NULL) |
14442 | relocation = 0; | |
14443 | else | |
14444 | { | |
14445 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
14446 | if (tls_type == (TLS_TLS | TLS_TPREL)) | |
14447 | relocation += DTP_OFFSET - TP_OFFSET; | |
14448 | } | |
5bd4f169 | 14449 | |
7b609f53 AM |
14450 | if (tls_type == (TLS_TLS | TLS_GD)) |
14451 | { | |
14452 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14453 | got->contents + off + 8); |
7b609f53 AM |
14454 | relocation = 1; |
14455 | } | |
411e1bfb | 14456 | } |
7b609f53 | 14457 | |
411e1bfb | 14458 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14459 | got->contents + off); |
5bd4f169 AM |
14460 | } |
14461 | } | |
14462 | ||
65f38f15 AM |
14463 | if (off >= (bfd_vma) -2) |
14464 | abort (); | |
14465 | ||
bf102f86 | 14466 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14467 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14468 | } |
65f38f15 AM |
14469 | break; |
14470 | ||
14471 | case R_PPC64_PLT16_HA: | |
14472 | case R_PPC64_PLT16_HI: | |
14473 | case R_PPC64_PLT16_LO: | |
14474 | case R_PPC64_PLT32: | |
14475 | case R_PPC64_PLT64: | |
14476 | /* Relocation is to the entry for this symbol in the | |
14477 | procedure linkage table. */ | |
cbf95972 AM |
14478 | { |
14479 | struct plt_entry **plt_list = NULL; | |
14480 | if (h != NULL) | |
14481 | plt_list = &h->elf.plt.plist; | |
14482 | else if (local_got_ents != NULL) | |
14483 | { | |
14484 | struct plt_entry **local_plt = (struct plt_entry **) | |
14485 | (local_got_ents + symtab_hdr->sh_info); | |
14486 | unsigned char *local_got_tls_masks = (unsigned char *) | |
14487 | (local_plt + symtab_hdr->sh_info); | |
14488 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
14489 | plt_list = local_plt + r_symndx; | |
14490 | } | |
14491 | if (plt_list) | |
14492 | { | |
14493 | struct plt_entry *ent; | |
65f38f15 | 14494 | |
cbf95972 AM |
14495 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
14496 | if (ent->plt.offset != (bfd_vma) -1 | |
14497 | && ent->addend == orig_rel.r_addend) | |
14498 | { | |
14499 | asection *plt; | |
14500 | ||
14501 | plt = htab->elf.splt; | |
14502 | if (!htab->elf.dynamic_sections_created | |
14503 | || h == NULL | |
14504 | || h->elf.dynindx == -1) | |
14505 | plt = htab->elf.iplt; | |
14506 | relocation = (plt->output_section->vma | |
14507 | + plt->output_offset | |
14508 | + ent->plt.offset); | |
14509 | addend = 0; | |
14510 | unresolved_reloc = FALSE; | |
14511 | break; | |
14512 | } | |
14513 | } | |
14514 | } | |
65f38f15 | 14515 | break; |
5bd4f169 | 14516 | |
0b13192e AM |
14517 | case R_PPC64_TOC: |
14518 | /* Relocation value is TOC base. */ | |
14519 | relocation = TOCstart; | |
cf35638d | 14520 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14521 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14522 | else if (unresolved_reloc) |
14523 | ; | |
6f20ed8a AM |
14524 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14525 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14526 | else |
14527 | unresolved_reloc = TRUE; | |
ab96bf03 | 14528 | goto dodyn; |
0b13192e | 14529 | |
5bd4f169 AM |
14530 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14531 | which is the address of the start of the TOC plus 0x8000. | |
14532 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14533 | in this order. */ | |
65f38f15 AM |
14534 | case R_PPC64_TOC16: |
14535 | case R_PPC64_TOC16_LO: | |
14536 | case R_PPC64_TOC16_HI: | |
14537 | case R_PPC64_TOC16_DS: | |
14538 | case R_PPC64_TOC16_LO_DS: | |
14539 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14540 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14541 | break; |
14542 | ||
14543 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14544 | case R_PPC64_SECTOFF: |
14545 | case R_PPC64_SECTOFF_LO: | |
14546 | case R_PPC64_SECTOFF_HI: | |
14547 | case R_PPC64_SECTOFF_DS: | |
14548 | case R_PPC64_SECTOFF_LO_DS: | |
14549 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14550 | if (sec != NULL) |
65f38f15 | 14551 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14552 | break; |
14553 | ||
25f23106 AM |
14554 | case R_PPC64_REL16: |
14555 | case R_PPC64_REL16_LO: | |
14556 | case R_PPC64_REL16_HI: | |
14557 | case R_PPC64_REL16_HA: | |
a680de9a | 14558 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
14559 | break; |
14560 | ||
721956f4 AM |
14561 | case R_PPC64_REL14: |
14562 | case R_PPC64_REL14_BRNTAKEN: | |
14563 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14564 | case R_PPC64_REL24: |
14565 | break; | |
14566 | ||
411e1bfb AM |
14567 | case R_PPC64_TPREL16: |
14568 | case R_PPC64_TPREL16_LO: | |
14569 | case R_PPC64_TPREL16_HI: | |
14570 | case R_PPC64_TPREL16_HA: | |
14571 | case R_PPC64_TPREL16_DS: | |
14572 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14573 | case R_PPC64_TPREL16_HIGH: |
14574 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14575 | case R_PPC64_TPREL16_HIGHER: |
14576 | case R_PPC64_TPREL16_HIGHERA: | |
14577 | case R_PPC64_TPREL16_HIGHEST: | |
14578 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14579 | if (h != NULL |
14580 | && h->elf.root.type == bfd_link_hash_undefweak | |
14581 | && h->elf.dynindx == -1) | |
14582 | { | |
14583 | /* Make this relocation against an undefined weak symbol | |
14584 | resolve to zero. This is really just a tweak, since | |
14585 | code using weak externs ought to check that they are | |
14586 | defined before using them. */ | |
14587 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14588 | ||
14589 | insn = bfd_get_32 (output_bfd, p); | |
14590 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14591 | if (insn != 0) | |
14592 | bfd_put_32 (output_bfd, insn, p); | |
14593 | break; | |
14594 | } | |
989f9879 AM |
14595 | if (htab->elf.tls_sec != NULL) |
14596 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
0e1862bb | 14597 | if (bfd_link_pic (info)) |
411e1bfb AM |
14598 | /* The TPREL16 relocs shouldn't really be used in shared |
14599 | libs as they will result in DT_TEXTREL being set, but | |
14600 | support them anyway. */ | |
14601 | goto dodyn; | |
14602 | break; | |
14603 | ||
14604 | case R_PPC64_DTPREL16: | |
14605 | case R_PPC64_DTPREL16_LO: | |
14606 | case R_PPC64_DTPREL16_HI: | |
14607 | case R_PPC64_DTPREL16_HA: | |
14608 | case R_PPC64_DTPREL16_DS: | |
14609 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14610 | case R_PPC64_DTPREL16_HIGH: |
14611 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14612 | case R_PPC64_DTPREL16_HIGHER: |
14613 | case R_PPC64_DTPREL16_HIGHERA: | |
14614 | case R_PPC64_DTPREL16_HIGHEST: | |
14615 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14616 | if (htab->elf.tls_sec != NULL) |
14617 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14618 | break; |
14619 | ||
45965137 AM |
14620 | case R_PPC64_ADDR64_LOCAL: |
14621 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14622 | ? h->elf.other | |
14623 | : sym->st_other); | |
14624 | break; | |
14625 | ||
e515b051 AM |
14626 | case R_PPC64_DTPMOD64: |
14627 | relocation = 1; | |
14628 | addend = 0; | |
14629 | goto dodyn; | |
14630 | ||
411e1bfb | 14631 | case R_PPC64_TPREL64: |
989f9879 AM |
14632 | if (htab->elf.tls_sec != NULL) |
14633 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14634 | goto dodyn; |
14635 | ||
14636 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14637 | if (htab->elf.tls_sec != NULL) |
14638 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14639 | /* Fall thru */ |
14640 | ||
65f38f15 AM |
14641 | /* Relocations that may need to be propagated if this is a |
14642 | dynamic object. */ | |
04c9666a | 14643 | case R_PPC64_REL30: |
65f38f15 AM |
14644 | case R_PPC64_REL32: |
14645 | case R_PPC64_REL64: | |
14646 | case R_PPC64_ADDR14: | |
14647 | case R_PPC64_ADDR14_BRNTAKEN: | |
14648 | case R_PPC64_ADDR14_BRTAKEN: | |
14649 | case R_PPC64_ADDR16: | |
14650 | case R_PPC64_ADDR16_DS: | |
14651 | case R_PPC64_ADDR16_HA: | |
14652 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14653 | case R_PPC64_ADDR16_HIGH: |
14654 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14655 | case R_PPC64_ADDR16_HIGHER: |
14656 | case R_PPC64_ADDR16_HIGHERA: | |
14657 | case R_PPC64_ADDR16_HIGHEST: | |
14658 | case R_PPC64_ADDR16_HIGHESTA: | |
14659 | case R_PPC64_ADDR16_LO: | |
14660 | case R_PPC64_ADDR16_LO_DS: | |
14661 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14662 | case R_PPC64_ADDR32: |
14663 | case R_PPC64_ADDR64: | |
14664 | case R_PPC64_UADDR16: | |
14665 | case R_PPC64_UADDR32: | |
14666 | case R_PPC64_UADDR64: | |
411e1bfb | 14667 | dodyn: |
5d1634d7 | 14668 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14669 | break; |
14670 | ||
41bd81ab AM |
14671 | if (NO_OPD_RELOCS && is_opd) |
14672 | break; | |
14673 | ||
0e1862bb | 14674 | if ((bfd_link_pic (info) |
4e795f50 | 14675 | && (h == NULL |
039b3fef AM |
14676 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14677 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14678 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14679 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 | 14680 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 14681 | && !bfd_link_pic (info) |
65f38f15 | 14682 | && h != NULL |
039b3fef | 14683 | && h->elf.dynindx != -1 |
f5385ebf | 14684 | && !h->elf.non_got_ref |
25f23106 | 14685 | && !h->elf.def_regular) |
0e1862bb | 14686 | || (!bfd_link_pic (info) |
25f23106 AM |
14687 | && (h != NULL |
14688 | ? h->elf.type == STT_GNU_IFUNC | |
14689 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14690 | { |
b34976b6 | 14691 | bfd_boolean skip, relocate; |
65f38f15 | 14692 | asection *sreloc; |
1cf1f670 | 14693 | bfd_vma out_off; |
65f38f15 AM |
14694 | |
14695 | /* When generating a dynamic object, these relocations | |
14696 | are copied into the output file to be resolved at run | |
14697 | time. */ | |
14698 | ||
b34976b6 AM |
14699 | skip = FALSE; |
14700 | relocate = FALSE; | |
65f38f15 | 14701 | |
1cf1f670 AM |
14702 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14703 | input_section, rel->r_offset); | |
14704 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14705 | skip = TRUE; |
1cf1f670 | 14706 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14707 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14708 | out_off += (input_section->output_section->vma |
14709 | + input_section->output_offset); | |
14710 | outrel.r_offset = out_off; | |
411e1bfb | 14711 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14712 | |
1cf1f670 AM |
14713 | /* Optimize unaligned reloc use. */ |
14714 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14715 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14716 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14717 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14718 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14719 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14720 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14721 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14722 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14723 | ||
65f38f15 | 14724 | if (skip) |
0bb2d96a | 14725 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14726 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14727 | && !is_opd |
14728 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14729 | { |
14730 | BFD_ASSERT (h->elf.dynindx != -1); | |
14731 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14732 | } | |
65f38f15 AM |
14733 | else |
14734 | { | |
41bd81ab AM |
14735 | /* This symbol is local, or marked to become local, |
14736 | or this is an opd section reloc which must point | |
14737 | at a local function. */ | |
65f38f15 | 14738 | outrel.r_addend += relocation; |
e86ce104 | 14739 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14740 | { |
3fad3c7c | 14741 | if (is_opd && h != NULL) |
afbe61cf AM |
14742 | { |
14743 | /* Lie about opd entries. This case occurs | |
14744 | when building shared libraries and we | |
14745 | reference a function in another shared | |
3fad3c7c AM |
14746 | lib. The same thing happens for a weak |
14747 | definition in an application that's | |
14748 | overridden by a strong definition in a | |
14749 | shared lib. (I believe this is a generic | |
14750 | bug in binutils handling of weak syms.) | |
14751 | In these cases we won't use the opd | |
1e2f5b6e | 14752 | entry in this lib. */ |
b34976b6 | 14753 | unresolved_reloc = FALSE; |
afbe61cf | 14754 | } |
25f23106 AM |
14755 | if (!is_opd |
14756 | && r_type == R_PPC64_ADDR64 | |
14757 | && (h != NULL | |
14758 | ? h->elf.type == STT_GNU_IFUNC | |
14759 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14760 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14761 | else | |
14762 | { | |
14763 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14764 | |
25f23106 AM |
14765 | /* We need to relocate .opd contents for ld.so. |
14766 | Prelink also wants simple and consistent rules | |
14767 | for relocs. This make all RELATIVE relocs have | |
14768 | *r_offset equal to r_addend. */ | |
14769 | relocate = TRUE; | |
14770 | } | |
65f38f15 AM |
14771 | } |
14772 | else | |
14773 | { | |
14774 | long indx = 0; | |
14775 | ||
25f23106 AM |
14776 | if (h != NULL |
14777 | ? h->elf.type == STT_GNU_IFUNC | |
14778 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14779 | { | |
25f53a85 | 14780 | info->callbacks->einfo |
bc30df16 AM |
14781 | (_("%P: %H: %s for indirect " |
14782 | "function `%T' unsupported\n"), | |
25f53a85 | 14783 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14784 | ppc64_elf_howto_table[r_type]->name, |
14785 | sym_name); | |
14786 | ret = FALSE; | |
14787 | } | |
cf35638d | 14788 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14789 | ; |
14790 | else if (sec == NULL || sec->owner == NULL) | |
14791 | { | |
14792 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14793 | return FALSE; |
65f38f15 AM |
14794 | } |
14795 | else | |
14796 | { | |
14797 | asection *osec; | |
14798 | ||
14799 | osec = sec->output_section; | |
14800 | indx = elf_section_data (osec)->dynindx; | |
14801 | ||
74541ad4 AM |
14802 | if (indx == 0) |
14803 | { | |
14804 | if ((osec->flags & SEC_READONLY) == 0 | |
14805 | && htab->elf.data_index_section != NULL) | |
14806 | osec = htab->elf.data_index_section; | |
14807 | else | |
14808 | osec = htab->elf.text_index_section; | |
14809 | indx = elf_section_data (osec)->dynindx; | |
14810 | } | |
14811 | BFD_ASSERT (indx != 0); | |
14812 | ||
65f38f15 AM |
14813 | /* We are turning this relocation into one |
14814 | against a section symbol, so subtract out | |
14815 | the output section's address but not the | |
14816 | offset of the input section in the output | |
14817 | section. */ | |
14818 | outrel.r_addend -= osec->vma; | |
14819 | } | |
14820 | ||
14821 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14822 | } | |
14823 | } | |
14824 | ||
14825 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14826 | if (h != NULL |
14827 | ? h->elf.type == STT_GNU_IFUNC | |
14828 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14829 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14830 | if (sreloc == NULL) |
14831 | abort (); | |
14832 | ||
dfbb6ac9 AM |
14833 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14834 | >= sreloc->size) | |
14835 | abort (); | |
947216bf AM |
14836 | loc = sreloc->contents; |
14837 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14838 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14839 | ||
14840 | /* If this reloc is against an external symbol, it will | |
14841 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14842 | anything now. However, for the sake of prelink ensure |
14843 | that the section contents are a known value. */ | |
65f38f15 | 14844 | if (! relocate) |
81407a69 AM |
14845 | { |
14846 | unresolved_reloc = FALSE; | |
14847 | /* The value chosen here is quite arbitrary as ld.so | |
14848 | ignores section contents except for the special | |
14849 | case of .opd where the contents might be accessed | |
14850 | before relocation. Choose zero, as that won't | |
14851 | cause reloc overflow. */ | |
14852 | relocation = 0; | |
14853 | addend = 0; | |
14854 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14855 | to improve backward compatibility with older | |
14856 | versions of ld. */ | |
14857 | if (r_type == R_PPC64_ADDR64) | |
14858 | addend = outrel.r_addend; | |
14859 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14860 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14861 | addend = (input_section->output_section->vma |
14862 | + input_section->output_offset | |
14863 | + rel->r_offset); | |
81407a69 | 14864 | } |
65f38f15 | 14865 | } |
5bd4f169 AM |
14866 | break; |
14867 | ||
65f38f15 AM |
14868 | case R_PPC64_COPY: |
14869 | case R_PPC64_GLOB_DAT: | |
14870 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14871 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14872 | case R_PPC64_RELATIVE: |
14873 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14874 | files. */ | |
ae9a127f | 14875 | /* Fall through. */ |
65f38f15 AM |
14876 | |
14877 | case R_PPC64_PLTGOT16: | |
14878 | case R_PPC64_PLTGOT16_DS: | |
14879 | case R_PPC64_PLTGOT16_HA: | |
14880 | case R_PPC64_PLTGOT16_HI: | |
14881 | case R_PPC64_PLTGOT16_LO: | |
14882 | case R_PPC64_PLTGOT16_LO_DS: | |
14883 | case R_PPC64_PLTREL32: | |
14884 | case R_PPC64_PLTREL64: | |
14885 | /* These ones haven't been implemented yet. */ | |
14886 | ||
25f53a85 | 14887 | info->callbacks->einfo |
bc30df16 | 14888 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14889 | input_bfd, |
4ce794b7 | 14890 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14891 | |
14892 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14893 | ret = FALSE; |
c316a17c | 14894 | goto copy_reloc; |
65f38f15 | 14895 | } |
5bd4f169 | 14896 | |
67f0cbdb AM |
14897 | /* Multi-instruction sequences that access the TOC can be |
14898 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14899 | to nop; addi rb,r2,x; */ | |
14900 | switch (r_type) | |
14901 | { | |
14902 | default: | |
14903 | break; | |
14904 | ||
14905 | case R_PPC64_GOT_TLSLD16_HI: | |
14906 | case R_PPC64_GOT_TLSGD16_HI: | |
14907 | case R_PPC64_GOT_TPREL16_HI: | |
14908 | case R_PPC64_GOT_DTPREL16_HI: | |
14909 | case R_PPC64_GOT16_HI: | |
14910 | case R_PPC64_TOC16_HI: | |
14911 | /* These relocs would only be useful if building up an | |
14912 | offset to later add to r2, perhaps in an indexed | |
14913 | addressing mode instruction. Don't try to optimize. | |
14914 | Unfortunately, the possibility of someone building up an | |
14915 | offset like this or even with the HA relocs, means that | |
14916 | we need to check the high insn when optimizing the low | |
14917 | insn. */ | |
14918 | break; | |
14919 | ||
14920 | case R_PPC64_GOT_TLSLD16_HA: | |
14921 | case R_PPC64_GOT_TLSGD16_HA: | |
14922 | case R_PPC64_GOT_TPREL16_HA: | |
14923 | case R_PPC64_GOT_DTPREL16_HA: | |
14924 | case R_PPC64_GOT16_HA: | |
14925 | case R_PPC64_TOC16_HA: | |
98528052 | 14926 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14927 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14928 | { |
14929 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14930 | bfd_put_32 (input_bfd, NOP, p); | |
14931 | } | |
67f0cbdb AM |
14932 | break; |
14933 | ||
14934 | case R_PPC64_GOT_TLSLD16_LO: | |
14935 | case R_PPC64_GOT_TLSGD16_LO: | |
14936 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14937 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14938 | case R_PPC64_GOT16_LO: | |
14939 | case R_PPC64_GOT16_LO_DS: | |
14940 | case R_PPC64_TOC16_LO: | |
14941 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14942 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14943 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14944 | { |
14945 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14946 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14947 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14948 | { | |
14949 | /* Transform addic to addi when we change reg. */ | |
14950 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14951 | insn |= (14u << 26) | (2 << 16); | |
14952 | } | |
14953 | else | |
67f0cbdb | 14954 | { |
98528052 AM |
14955 | insn &= ~(0x1f << 16); |
14956 | insn |= 2 << 16; | |
67f0cbdb | 14957 | } |
560c8763 | 14958 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14959 | } |
14960 | break; | |
14961 | } | |
14962 | ||
65f38f15 | 14963 | /* Do any further special processing. */ |
b80eed39 | 14964 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 AM |
14965 | switch (r_type) |
14966 | { | |
14967 | default: | |
14968 | break; | |
14969 | ||
25f23106 | 14970 | case R_PPC64_REL16_HA: |
a680de9a | 14971 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
14972 | case R_PPC64_ADDR16_HA: |
14973 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14974 | case R_PPC64_ADDR16_HIGHERA: |
14975 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14976 | case R_PPC64_TOC16_HA: |
14977 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14978 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14979 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14980 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14981 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14982 | case R_PPC64_DTPREL16_HA: |
14983 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14984 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14985 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14986 | /* It's just possible that this symbol is a weak symbol |
14987 | that's not actually defined anywhere. In that case, | |
14988 | 'sec' would be NULL, and we should leave the symbol | |
14989 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14990 | if (sec == NULL) |
14991 | break; | |
14992 | /* Fall thru */ | |
14993 | ||
14994 | case R_PPC64_GOT16_HA: | |
14995 | case R_PPC64_PLTGOT16_HA: | |
14996 | case R_PPC64_PLT16_HA: | |
14997 | case R_PPC64_GOT_TLSGD16_HA: | |
14998 | case R_PPC64_GOT_TLSLD16_HA: | |
14999 | case R_PPC64_GOT_TPREL16_HA: | |
15000 | case R_PPC64_GOT_DTPREL16_HA: | |
15001 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15002 | Bits 0:15 are not used. */ | |
15003 | addend += 0x8000; | |
65f38f15 AM |
15004 | break; |
15005 | ||
15006 | case R_PPC64_ADDR16_DS: | |
15007 | case R_PPC64_ADDR16_LO_DS: | |
15008 | case R_PPC64_GOT16_DS: | |
15009 | case R_PPC64_GOT16_LO_DS: | |
15010 | case R_PPC64_PLT16_LO_DS: | |
15011 | case R_PPC64_SECTOFF_DS: | |
15012 | case R_PPC64_SECTOFF_LO_DS: | |
15013 | case R_PPC64_TOC16_DS: | |
15014 | case R_PPC64_TOC16_LO_DS: | |
15015 | case R_PPC64_PLTGOT16_DS: | |
15016 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15017 | case R_PPC64_GOT_TPREL16_DS: |
15018 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15019 | case R_PPC64_GOT_DTPREL16_DS: | |
15020 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15021 | case R_PPC64_TPREL16_DS: | |
15022 | case R_PPC64_TPREL16_LO_DS: | |
15023 | case R_PPC64_DTPREL16_DS: | |
15024 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15025 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15026 | mask = 3; | |
a680de9a PB |
15027 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15028 | the value must be a multiple of 16. This is somewhat of | |
15029 | a hack, but the "correct" way to do this by defining _DQ | |
15030 | forms of all the _DS relocs bloats all reloc switches in | |
15031 | this file. It doesn't make much sense to use these | |
15032 | relocs in data, so testing the insn should be safe. */ | |
15033 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15034 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15035 | mask = 15; |
a680de9a PB |
15036 | relocation += addend; |
15037 | addend = insn & (mask ^ 3); | |
15038 | if ((relocation & mask) != 0) | |
65f38f15 | 15039 | { |
a680de9a | 15040 | relocation ^= relocation & mask; |
25f53a85 | 15041 | info->callbacks->einfo |
8de848d8 | 15042 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 15043 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15044 | howto->name, |
adadcc0c | 15045 | mask + 1); |
65f38f15 | 15046 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15047 | ret = FALSE; |
c316a17c | 15048 | goto copy_reloc; |
65f38f15 AM |
15049 | } |
15050 | break; | |
5bd4f169 AM |
15051 | } |
15052 | ||
239e1f3a AM |
15053 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15054 | because such sections are not SEC_ALLOC and thus ld.so will | |
15055 | not process them. */ | |
65f38f15 | 15056 | if (unresolved_reloc |
239e1f3a | 15057 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15058 | && h->elf.def_dynamic) |
15059 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15060 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15061 | { |
25f53a85 | 15062 | info->callbacks->einfo |
bc30df16 | 15063 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 15064 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15065 | howto->name, |
039b3fef | 15066 | h->elf.root.root.string); |
b34976b6 | 15067 | ret = FALSE; |
9c07fe7c | 15068 | } |
5bd4f169 | 15069 | |
b80eed39 AM |
15070 | /* 16-bit fields in insns mostly have signed values, but a |
15071 | few insns have 16-bit unsigned values. Really, we should | |
15072 | have different reloc types. */ | |
15073 | if (howto->complain_on_overflow != complain_overflow_dont | |
15074 | && howto->dst_mask == 0xffff | |
15075 | && (input_section->flags & SEC_CODE) != 0) | |
15076 | { | |
15077 | enum complain_overflow complain = complain_overflow_signed; | |
15078 | ||
15079 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15080 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15081 | complain = complain_overflow_bitfield; | |
15082 | else if (howto->rightshift == 0 | |
15083 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15084 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15085 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15086 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15087 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15088 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15089 | complain = complain_overflow_unsigned; |
15090 | if (howto->complain_on_overflow != complain) | |
15091 | { | |
15092 | alt_howto = *howto; | |
15093 | alt_howto.complain_on_overflow = complain; | |
15094 | howto = &alt_howto; | |
15095 | } | |
15096 | } | |
15097 | ||
a680de9a PB |
15098 | if (r_type == R_PPC64_REL16DX_HA) |
15099 | { | |
15100 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15101 | if (rel->r_offset + 4 > input_section->size) | |
15102 | r = bfd_reloc_outofrange; | |
15103 | else | |
15104 | { | |
15105 | relocation += addend; | |
15106 | relocation -= (rel->r_offset | |
15107 | + input_section->output_offset | |
15108 | + input_section->output_section->vma); | |
15109 | relocation = (bfd_signed_vma) relocation >> 16; | |
15110 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15111 | insn &= ~0x1fffc1; | |
15112 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
15113 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
15114 | r = bfd_reloc_ok; | |
15115 | if (relocation + 0x8000 > 0xffff) | |
15116 | r = bfd_reloc_overflow; | |
15117 | } | |
15118 | } | |
15119 | else | |
15120 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15121 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15122 | |
ef60b7ff | 15123 | if (r != bfd_reloc_ok) |
5bd4f169 | 15124 | { |
bc30df16 | 15125 | char *more_info = NULL; |
b80eed39 | 15126 | const char *reloc_name = howto->name; |
bc30df16 AM |
15127 | |
15128 | if (reloc_dest != DEST_NORMAL) | |
15129 | { | |
15130 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15131 | if (more_info != NULL) | |
15132 | { | |
15133 | strcpy (more_info, reloc_name); | |
15134 | strcat (more_info, (reloc_dest == DEST_OPD | |
15135 | ? " (OPD)" : " (stub)")); | |
15136 | reloc_name = more_info; | |
15137 | } | |
15138 | } | |
15139 | ||
cd27b276 | 15140 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15141 | { |
8131c122 AM |
15142 | /* On code like "if (foo) foo();" don't report overflow |
15143 | on a branch to zero when foo is undefined. */ | |
15144 | if (!warned | |
15145 | && (reloc_dest == DEST_STUB | |
15146 | || !(h != NULL | |
15147 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15148 | || h->elf.root.type == bfd_link_hash_undefined) | |
15149 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15150 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15151 | sym_name, reloc_name, | |
15152 | orig_rel.r_addend, | |
15153 | input_bfd, input_section, | |
15154 | rel->r_offset); | |
ef60b7ff AM |
15155 | } |
15156 | else | |
15157 | { | |
25f53a85 | 15158 | info->callbacks->einfo |
bc30df16 | 15159 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 15160 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15161 | reloc_name, sym_name, (int) r); |
b34976b6 | 15162 | ret = FALSE; |
ef60b7ff | 15163 | } |
bc30df16 AM |
15164 | if (more_info != NULL) |
15165 | free (more_info); | |
5bd4f169 | 15166 | } |
c316a17c AM |
15167 | copy_reloc: |
15168 | if (wrel != rel) | |
15169 | *wrel = *rel; | |
15170 | } | |
15171 | ||
15172 | if (wrel != rel) | |
15173 | { | |
15174 | Elf_Internal_Shdr *rel_hdr; | |
15175 | size_t deleted = rel - wrel; | |
15176 | ||
15177 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15178 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15179 | if (rel_hdr->sh_size == 0) | |
15180 | { | |
15181 | /* It is too late to remove an empty reloc section. Leave | |
15182 | one NONE reloc. | |
15183 | ??? What is wrong with an empty section??? */ | |
15184 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15185 | deleted -= 1; | |
15186 | } | |
15187 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15188 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15189 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15190 | } |
15191 | ||
645ea6a9 AM |
15192 | /* If we're emitting relocations, then shortly after this function |
15193 | returns, reloc offsets and addends for this section will be | |
15194 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15195 | file rather than the input. Save a copy of the relocs for |
15196 | opd_entry_value. */ | |
0e1862bb | 15197 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15198 | { |
15199 | bfd_size_type amt; | |
15200 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15201 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15202 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15203 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15204 | if (rel == NULL) |
15205 | return FALSE; | |
15206 | memcpy (rel, relocs, amt); | |
15207 | } | |
5bd4f169 AM |
15208 | return ret; |
15209 | } | |
15210 | ||
754021d0 AM |
15211 | /* Adjust the value of any local symbols in opd sections. */ |
15212 | ||
6e0b88f1 | 15213 | static int |
754021d0 AM |
15214 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15215 | const char *name ATTRIBUTE_UNUSED, | |
15216 | Elf_Internal_Sym *elfsym, | |
15217 | asection *input_sec, | |
15218 | struct elf_link_hash_entry *h) | |
15219 | { | |
74f0fb50 AM |
15220 | struct _opd_sec_data *opd; |
15221 | long adjust; | |
754021d0 AM |
15222 | bfd_vma value; |
15223 | ||
4025353c | 15224 | if (h != NULL) |
6e0b88f1 | 15225 | return 1; |
4025353c | 15226 | |
74f0fb50 AM |
15227 | opd = get_opd_info (input_sec); |
15228 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15229 | return 1; |
754021d0 AM |
15230 | |
15231 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15232 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15233 | value -= input_sec->output_section->vma; |
15234 | ||
51aecdc5 | 15235 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15236 | if (adjust == -1) |
6e0b88f1 AM |
15237 | return 2; |
15238 | ||
15239 | elfsym->st_value += adjust; | |
15240 | return 1; | |
754021d0 AM |
15241 | } |
15242 | ||
5bd4f169 AM |
15243 | /* Finish up dynamic symbol handling. We set the contents of various |
15244 | dynamic sections here. */ | |
15245 | ||
b34976b6 | 15246 | static bfd_boolean |
4ce794b7 AM |
15247 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15248 | struct bfd_link_info *info, | |
15249 | struct elf_link_hash_entry *h, | |
ab6dce23 | 15250 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 15251 | { |
65f38f15 | 15252 | struct ppc_link_hash_table *htab; |
8387904d AM |
15253 | struct plt_entry *ent; |
15254 | Elf_Internal_Rela rela; | |
15255 | bfd_byte *loc; | |
5bd4f169 | 15256 | |
65f38f15 | 15257 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15258 | if (htab == NULL) |
15259 | return FALSE; | |
5bd4f169 | 15260 | |
8387904d AM |
15261 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
15262 | if (ent->plt.offset != (bfd_vma) -1) | |
15263 | { | |
15264 | /* This symbol has an entry in the procedure linkage | |
15265 | table. Set it up. */ | |
e054468f AM |
15266 | if (!htab->elf.dynamic_sections_created |
15267 | || h->dynindx == -1) | |
15268 | { | |
15269 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
15270 | && h->def_regular | |
15271 | && (h->root.type == bfd_link_hash_defined | |
15272 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
15273 | rela.r_offset = (htab->elf.iplt->output_section->vma |
15274 | + htab->elf.iplt->output_offset | |
25f23106 | 15275 | + ent->plt.offset); |
ee67d69a AM |
15276 | if (htab->opd_abi) |
15277 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
15278 | else | |
15279 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
15280 | rela.r_addend = (h->root.u.def.value |
15281 | + h->root.u.def.section->output_offset | |
15282 | + h->root.u.def.section->output_section->vma | |
15283 | + ent->addend); | |
33e44f2e AM |
15284 | loc = (htab->elf.irelplt->contents |
15285 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 15286 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
15287 | } |
15288 | else | |
15289 | { | |
33e44f2e AM |
15290 | rela.r_offset = (htab->elf.splt->output_section->vma |
15291 | + htab->elf.splt->output_offset | |
25f23106 | 15292 | + ent->plt.offset); |
e054468f AM |
15293 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
15294 | rela.r_addend = ent->addend; | |
33e44f2e | 15295 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
15296 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
15297 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 15298 | } |
8387904d | 15299 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
15300 | |
15301 | if (!htab->opd_abi) | |
15302 | { | |
15303 | if (!h->def_regular) | |
15304 | { | |
15305 | /* Mark the symbol as undefined, rather than as | |
15306 | defined in glink. Leave the value if there were | |
15307 | any relocations where pointer equality matters | |
15308 | (this is a clue for the dynamic linker, to make | |
15309 | function pointer comparisons work between an | |
15310 | application and shared library), otherwise set it | |
15311 | to zero. */ | |
15312 | sym->st_shndx = SHN_UNDEF; | |
15313 | if (!h->pointer_equality_needed) | |
15314 | sym->st_value = 0; | |
15315 | else if (!h->ref_regular_nonweak) | |
15316 | { | |
15317 | /* This breaks function pointer comparisons, but | |
15318 | that is better than breaking tests for a NULL | |
15319 | function pointer. */ | |
15320 | sym->st_value = 0; | |
15321 | } | |
15322 | } | |
15323 | } | |
8387904d | 15324 | } |
5bd4f169 | 15325 | |
f5385ebf | 15326 | if (h->needs_copy) |
5bd4f169 | 15327 | { |
65f38f15 | 15328 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 15329 | |
65f38f15 AM |
15330 | if (h->dynindx == -1 |
15331 | || (h->root.type != bfd_link_hash_defined | |
15332 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 15333 | || htab->relbss == NULL) |
65f38f15 | 15334 | abort (); |
5bd4f169 AM |
15335 | |
15336 | rela.r_offset = (h->root.u.def.value | |
15337 | + h->root.u.def.section->output_section->vma | |
15338 | + h->root.u.def.section->output_offset); | |
15339 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15340 | rela.r_addend = 0; | |
4ce794b7 AM |
15341 | loc = htab->relbss->contents; |
15342 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15343 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15344 | } |
15345 | ||
b34976b6 | 15346 | return TRUE; |
5bd4f169 AM |
15347 | } |
15348 | ||
65f38f15 AM |
15349 | /* Used to decide how to sort relocs in an optimal manner for the |
15350 | dynamic linker, before writing them out. */ | |
15351 | ||
15352 | static enum elf_reloc_type_class | |
7e612e98 AM |
15353 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15354 | const asection *rel_sec, | |
15355 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15356 | { |
04c9666a | 15357 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15358 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15359 | ||
33e44f2e | 15360 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15361 | return reloc_class_ifunc; |
a33d1f77 | 15362 | |
4ce794b7 | 15363 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15364 | switch (r_type) |
65f38f15 AM |
15365 | { |
15366 | case R_PPC64_RELATIVE: | |
15367 | return reloc_class_relative; | |
15368 | case R_PPC64_JMP_SLOT: | |
15369 | return reloc_class_plt; | |
15370 | case R_PPC64_COPY: | |
15371 | return reloc_class_copy; | |
15372 | default: | |
15373 | return reloc_class_normal; | |
15374 | } | |
15375 | } | |
15376 | ||
5bd4f169 AM |
15377 | /* Finish up the dynamic sections. */ |
15378 | ||
b34976b6 | 15379 | static bfd_boolean |
4ce794b7 AM |
15380 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15381 | struct bfd_link_info *info) | |
5bd4f169 | 15382 | { |
65f38f15 AM |
15383 | struct ppc_link_hash_table *htab; |
15384 | bfd *dynobj; | |
5bd4f169 | 15385 | asection *sdyn; |
5bd4f169 | 15386 | |
65f38f15 | 15387 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15388 | if (htab == NULL) |
15389 | return FALSE; | |
15390 | ||
65f38f15 | 15391 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15392 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15393 | |
65f38f15 | 15394 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15395 | { |
5bd4f169 AM |
15396 | Elf64_External_Dyn *dyncon, *dynconend; |
15397 | ||
33e44f2e | 15398 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15399 | abort (); |
5bd4f169 AM |
15400 | |
15401 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15402 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15403 | for (; dyncon < dynconend; dyncon++) |
15404 | { | |
15405 | Elf_Internal_Dyn dyn; | |
19397422 | 15406 | asection *s; |
5bd4f169 AM |
15407 | |
15408 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15409 | ||
15410 | switch (dyn.d_tag) | |
15411 | { | |
65f38f15 AM |
15412 | default: |
15413 | continue; | |
5bd4f169 | 15414 | |
5d1634d7 | 15415 | case DT_PPC64_GLINK: |
4ce794b7 | 15416 | s = htab->glink; |
6348e046 | 15417 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15418 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15419 | of glink rather than the first entry point, which is | |
15420 | what ld.so needs, and now have a bigger stub to | |
15421 | support automatic multiple TOCs. */ | |
b9e5796b | 15422 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
15423 | break; |
15424 | ||
19397422 AM |
15425 | case DT_PPC64_OPD: |
15426 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15427 | if (s == NULL) |
15428 | continue; | |
15429 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15430 | break; |
15431 | ||
e8910a83 AM |
15432 | case DT_PPC64_OPT: |
15433 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15434 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
15435 | break; | |
15436 | ||
19397422 AM |
15437 | case DT_PPC64_OPDSZ: |
15438 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15439 | if (s == NULL) |
15440 | continue; | |
eea6121a | 15441 | dyn.d_un.d_val = s->size; |
19397422 AM |
15442 | break; |
15443 | ||
65f38f15 | 15444 | case DT_PLTGOT: |
33e44f2e | 15445 | s = htab->elf.splt; |
6348e046 | 15446 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15447 | break; |
15448 | ||
15449 | case DT_JMPREL: | |
33e44f2e | 15450 | s = htab->elf.srelplt; |
6348e046 | 15451 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15452 | break; |
5bd4f169 | 15453 | |
65f38f15 | 15454 | case DT_PLTRELSZ: |
33e44f2e | 15455 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
15456 | break; |
15457 | ||
15458 | case DT_RELASZ: | |
15459 | /* Don't count procedure linkage table relocs in the | |
15460 | overall reloc count. */ | |
33e44f2e | 15461 | s = htab->elf.srelplt; |
6348e046 AM |
15462 | if (s == NULL) |
15463 | continue; | |
eea6121a | 15464 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
15465 | break; |
15466 | ||
15467 | case DT_RELA: | |
15468 | /* We may not be using the standard ELF linker script. | |
15469 | If .rela.plt is the first .rela section, we adjust | |
15470 | DT_RELA to not include it. */ | |
33e44f2e | 15471 | s = htab->elf.srelplt; |
6348e046 AM |
15472 | if (s == NULL) |
15473 | continue; | |
15474 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
15475 | continue; | |
eea6121a | 15476 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 15477 | break; |
5bd4f169 | 15478 | } |
5bd4f169 | 15479 | |
65f38f15 | 15480 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15481 | } |
5bd4f169 AM |
15482 | } |
15483 | ||
33e44f2e | 15484 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
15485 | { |
15486 | /* Fill in the first entry in the global offset table. | |
15487 | We use it to hold the link-time TOCbase. */ | |
15488 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15489 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15490 | htab->elf.sgot->contents); |
5d1634d7 AM |
15491 | |
15492 | /* Set .got entry size. */ | |
33e44f2e | 15493 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15494 | } |
15495 | ||
33e44f2e | 15496 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
15497 | { |
15498 | /* Set .plt entry size. */ | |
33e44f2e | 15499 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15500 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15501 | } |
15502 | ||
84f5d08e AM |
15503 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15504 | brlt ourselves if emitrelocations. */ | |
15505 | if (htab->brlt != NULL | |
15506 | && htab->brlt->reloc_count != 0 | |
15507 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15508 | htab->brlt, | |
d4730f92 | 15509 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15510 | elf_section_data (htab->brlt)->relocs, |
15511 | NULL)) | |
15512 | return FALSE; | |
15513 | ||
176a0d42 AM |
15514 | if (htab->glink != NULL |
15515 | && htab->glink->reloc_count != 0 | |
15516 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15517 | htab->glink, | |
d4730f92 | 15518 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15519 | elf_section_data (htab->glink)->relocs, |
15520 | NULL)) | |
15521 | return FALSE; | |
15522 | ||
58d180e8 | 15523 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15524 | && htab->glink_eh_frame->size != 0) |
15525 | { | |
15526 | bfd_vma val; | |
15527 | bfd_byte *p; | |
15528 | asection *stub_sec; | |
15529 | ||
15530 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
15531 | for (stub_sec = htab->params->stub_bfd->sections; | |
15532 | stub_sec != NULL; | |
15533 | stub_sec = stub_sec->next) | |
15534 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
15535 | { | |
15536 | /* FDE length. */ | |
15537 | p += 4; | |
15538 | /* CIE pointer. */ | |
15539 | p += 4; | |
15540 | /* Offset to stub section. */ | |
15541 | val = (stub_sec->output_section->vma | |
15542 | + stub_sec->output_offset); | |
15543 | val -= (htab->glink_eh_frame->output_section->vma | |
15544 | + htab->glink_eh_frame->output_offset | |
15545 | + (p - htab->glink_eh_frame->contents)); | |
15546 | if (val + 0x80000000 > 0xffffffff) | |
15547 | { | |
15548 | info->callbacks->einfo | |
15549 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15550 | stub_sec->name); | |
15551 | return FALSE; | |
15552 | } | |
15553 | bfd_put_32 (dynobj, val, p); | |
15554 | p += 4; | |
15555 | /* stub section size. */ | |
15556 | p += 4; | |
15557 | /* Augmentation. */ | |
15558 | p += 1; | |
15559 | /* Pad. */ | |
15560 | p += 7; | |
15561 | } | |
15562 | if (htab->glink != NULL && htab->glink->size != 0) | |
15563 | { | |
15564 | /* FDE length. */ | |
15565 | p += 4; | |
15566 | /* CIE pointer. */ | |
15567 | p += 4; | |
15568 | /* Offset to .glink. */ | |
15569 | val = (htab->glink->output_section->vma | |
15570 | + htab->glink->output_offset | |
15571 | + 8); | |
15572 | val -= (htab->glink_eh_frame->output_section->vma | |
15573 | + htab->glink_eh_frame->output_offset | |
15574 | + (p - htab->glink_eh_frame->contents)); | |
15575 | if (val + 0x80000000 > 0xffffffff) | |
15576 | { | |
15577 | info->callbacks->einfo | |
15578 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15579 | htab->glink->name); | |
15580 | return FALSE; | |
15581 | } | |
15582 | bfd_put_32 (dynobj, val, p); | |
15583 | p += 4; | |
15584 | /* .glink size. */ | |
15585 | p += 4; | |
15586 | /* Augmentation. */ | |
15587 | p += 1; | |
15588 | /* Ops. */ | |
15589 | p += 7; | |
15590 | } | |
15591 | ||
15592 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15593 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15594 | htab->glink_eh_frame, | |
15595 | htab->glink_eh_frame->contents)) | |
15596 | return FALSE; | |
15597 | } | |
58d180e8 | 15598 | |
e717da7e | 15599 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15600 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15601 | bfd. */ | |
c72f2fb2 | 15602 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15603 | { |
15604 | asection *s; | |
7b53ace3 | 15605 | |
0c8d6e5c | 15606 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15607 | continue; |
15608 | ||
e717da7e AM |
15609 | s = ppc64_elf_tdata (dynobj)->got; |
15610 | if (s != NULL | |
eea6121a | 15611 | && s->size != 0 |
e717da7e AM |
15612 | && s->output_section != bfd_abs_section_ptr |
15613 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15614 | s->contents, s->output_offset, | |
eea6121a | 15615 | s->size)) |
e717da7e AM |
15616 | return FALSE; |
15617 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15618 | if (s != NULL | |
eea6121a | 15619 | && s->size != 0 |
e717da7e AM |
15620 | && s->output_section != bfd_abs_section_ptr |
15621 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15622 | s->contents, s->output_offset, | |
eea6121a | 15623 | s->size)) |
e717da7e AM |
15624 | return FALSE; |
15625 | } | |
f6c52c13 | 15626 | |
b34976b6 | 15627 | return TRUE; |
5bd4f169 AM |
15628 | } |
15629 | ||
5bd4f169 | 15630 | #include "elf64-target.h" |
7b8e7dad AM |
15631 | |
15632 | /* FreeBSD support */ | |
15633 | ||
15634 | #undef TARGET_LITTLE_SYM | |
15635 | #undef TARGET_LITTLE_NAME | |
15636 | ||
15637 | #undef TARGET_BIG_SYM | |
6d00b590 | 15638 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15639 | #undef TARGET_BIG_NAME |
15640 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15641 | ||
15642 | #undef ELF_OSABI | |
15643 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15644 | ||
15645 | #undef elf64_bed | |
15646 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15647 | ||
15648 | #include "elf64-target.h" | |
15649 |