Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
794e51c0 | 3 | 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 6 | Largely rewritten by Alan Modra. |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
58d180e8 | 37 | #include "dwarf2.h" |
5bd4f169 | 38 | |
805fc799 | 39 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
41 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 57 | static bfd_vma opd_entry_value |
aef36ac1 | 58 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 59 | |
ad8e1ba5 AM |
60 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
61 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
62 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
63 | #define TARGET_BIG_NAME "elf64-powerpc" | |
64 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 65 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
66 | #define ELF_MACHINE_CODE EM_PPC64 |
67 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 68 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
77 | #define elf_backend_can_refcount 1 | |
78 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 79 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 80 | |
e717da7e | 81 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 82 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 83 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
84 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
85 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
86 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
87 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
88 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 89 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 90 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
91 | |
92 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
93 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
94 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 95 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
96 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
97 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 98 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 99 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
e5034e59 | 100 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 101 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 102 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 103 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 104 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
105 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
106 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
107 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
108 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 109 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
110 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
111 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 112 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 113 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 114 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
115 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
116 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
117 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
118 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 119 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 120 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 121 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 122 | |
5bd4f169 AM |
123 | /* The name of the dynamic interpreter. This is put in the .interp |
124 | section. */ | |
125 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
126 | ||
127 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 128 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
129 | |
130 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 131 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 132 | |
a078d95a AM |
133 | /* Offsets to some stack save slots. */ |
134 | #define STK_LR 16 | |
135 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 136 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
137 | CR save slot. Used only by optimised __tls_get_addr call stub, |
138 | relying on __tls_get_addr_opt not saving CR.. */ | |
139 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
140 | ||
5bd4f169 | 141 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb AM |
142 | #define TOC_BASE_OFF 0x8000 |
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) */ |
ad8e1ba5 | 176 | |
a345bc8d AM |
177 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
178 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
179 | ||
ee4bf8d2 | 180 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 181 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
182 | /* 0: */ |
183 | /* .quad plt0-1f */ | |
184 | /* __glink: */ | |
185 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
186 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
187 | /* 1: */ | |
188 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 189 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 190 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
191 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
192 | /* ld %12,0(%11) */ | |
193 | /* ld %2,8(%11) */ | |
194 | /* mtctr %12 */ | |
195 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 196 | /* bctr */ |
b9e5796b AM |
197 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
198 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
199 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
200 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
201 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
202 | |
203 | /* Pad with this. */ | |
204 | #define NOP 0x60000000 | |
205 | ||
721956f4 AM |
206 | /* Some other nops. */ |
207 | #define CROR_151515 0x4def7b82 | |
208 | #define CROR_313131 0x4ffffb82 | |
209 | ||
cedb70c5 | 210 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
211 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
212 | #define B_DOT 0x48000000 /* b . */ | |
213 | ||
214 | /* After that, we need two instructions to load the index, followed by | |
215 | a branch. */ | |
216 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 217 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 218 | |
deb0e272 AM |
219 | /* Instructions used by the save and restore reg functions. */ |
220 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
221 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
222 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
223 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
224 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
225 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
226 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
227 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
228 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
229 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
230 | #define BLR 0x4e800020 /* blr */ |
231 | ||
41bd81ab AM |
232 | /* Since .opd is an array of descriptors and each entry will end up |
233 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
234 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 235 | relocate .opd without reloc entries. */ |
41bd81ab AM |
236 | #ifndef NO_OPD_RELOCS |
237 | #define NO_OPD_RELOCS 0 | |
238 | #endif | |
5bd4f169 | 239 | \f |
f5e87a1d | 240 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 241 | |
5bd4f169 | 242 | /* Relocation HOWTO's. */ |
04c9666a | 243 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
244 | |
245 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
246 | /* This reloc does nothing. */ | |
247 | HOWTO (R_PPC64_NONE, /* type */ | |
248 | 0, /* rightshift */ | |
411e1bfb AM |
249 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
250 | 32, /* bitsize */ | |
b34976b6 | 251 | FALSE, /* pc_relative */ |
5bd4f169 | 252 | 0, /* bitpos */ |
f5e87a1d | 253 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
254 | bfd_elf_generic_reloc, /* special_function */ |
255 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 256 | FALSE, /* partial_inplace */ |
d006db6c | 257 | 0, /* src_mask */ |
5bd4f169 | 258 | 0, /* dst_mask */ |
b34976b6 | 259 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
260 | |
261 | /* A standard 32 bit relocation. */ | |
262 | HOWTO (R_PPC64_ADDR32, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 32, /* bitsize */ | |
b34976b6 | 266 | FALSE, /* pc_relative */ |
5bd4f169 AM |
267 | 0, /* bitpos */ |
268 | complain_overflow_bitfield, /* complain_on_overflow */ | |
269 | bfd_elf_generic_reloc, /* special_function */ | |
270 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 271 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
272 | 0, /* src_mask */ |
273 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 274 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
275 | |
276 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
277 | FIXME: we don't check that, we just clear them. */ | |
278 | HOWTO (R_PPC64_ADDR24, /* type */ | |
279 | 0, /* rightshift */ | |
280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 26, /* bitsize */ | |
b34976b6 | 282 | FALSE, /* pc_relative */ |
5bd4f169 AM |
283 | 0, /* bitpos */ |
284 | complain_overflow_bitfield, /* complain_on_overflow */ | |
285 | bfd_elf_generic_reloc, /* special_function */ | |
286 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 287 | FALSE, /* partial_inplace */ |
d006db6c | 288 | 0, /* src_mask */ |
f5e87a1d | 289 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
291 | |
292 | /* A standard 16 bit relocation. */ | |
293 | HOWTO (R_PPC64_ADDR16, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 16, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
5bd4f169 AM |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
303 | 0, /* src_mask */ |
304 | 0xffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
306 | |
307 | /* A 16 bit relocation without overflow. */ | |
308 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 16, /* bitsize */ | |
b34976b6 | 312 | FALSE, /* pc_relative */ |
5bd4f169 AM |
313 | 0, /* bitpos */ |
314 | complain_overflow_dont,/* complain_on_overflow */ | |
315 | bfd_elf_generic_reloc, /* special_function */ | |
316 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 317 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
318 | 0, /* src_mask */ |
319 | 0xffff, /* dst_mask */ | |
b34976b6 | 320 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
321 | |
322 | /* Bits 16-31 of an address. */ | |
323 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
324 | 16, /* rightshift */ | |
325 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 16, /* bitsize */ | |
b34976b6 | 327 | FALSE, /* pc_relative */ |
5bd4f169 | 328 | 0, /* bitpos */ |
f9c6b907 | 329 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
330 | bfd_elf_generic_reloc, /* special_function */ |
331 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 332 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
333 | 0, /* src_mask */ |
334 | 0xffff, /* dst_mask */ | |
b34976b6 | 335 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
336 | |
337 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
338 | bits, treated as a signed number, is negative. */ | |
339 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
340 | 16, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
5bd4f169 | 344 | 0, /* bitpos */ |
f9c6b907 | 345 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 346 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 347 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
352 | |
353 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
354 | FIXME: we don't check that, we just clear them. */ | |
355 | HOWTO (R_PPC64_ADDR14, /* type */ | |
356 | 0, /* rightshift */ | |
357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 16, /* bitsize */ | |
b34976b6 | 359 | FALSE, /* pc_relative */ |
5bd4f169 AM |
360 | 0, /* bitpos */ |
361 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 362 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 363 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 364 | FALSE, /* partial_inplace */ |
d006db6c | 365 | 0, /* src_mask */ |
f5e87a1d | 366 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 367 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
368 | |
369 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
370 | indicate that the branch is expected to be taken. The lower two | |
371 | bits must be zero. */ | |
372 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
373 | 0, /* rightshift */ | |
374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
375 | 16, /* bitsize */ | |
b34976b6 | 376 | FALSE, /* pc_relative */ |
5bd4f169 AM |
377 | 0, /* bitpos */ |
378 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 379 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 380 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 381 | FALSE, /* partial_inplace */ |
d006db6c | 382 | 0, /* src_mask */ |
f5e87a1d | 383 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 384 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
385 | |
386 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
387 | indicate that the branch is not expected to be taken. The lower | |
388 | two bits must be zero. */ | |
389 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
390 | 0, /* rightshift */ | |
391 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
392 | 16, /* bitsize */ | |
b34976b6 | 393 | FALSE, /* pc_relative */ |
5bd4f169 AM |
394 | 0, /* bitpos */ |
395 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 396 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 397 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 398 | FALSE, /* partial_inplace */ |
d006db6c | 399 | 0, /* src_mask */ |
f5e87a1d | 400 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 401 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
402 | |
403 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
404 | HOWTO (R_PPC64_REL24, /* type */ | |
405 | 0, /* rightshift */ | |
406 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
407 | 26, /* bitsize */ | |
b34976b6 | 408 | TRUE, /* pc_relative */ |
5bd4f169 AM |
409 | 0, /* bitpos */ |
410 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 411 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 412 | "R_PPC64_REL24", /* name */ |
b34976b6 | 413 | FALSE, /* partial_inplace */ |
d006db6c | 414 | 0, /* src_mask */ |
f5e87a1d | 415 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 416 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
417 | |
418 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
419 | HOWTO (R_PPC64_REL14, /* type */ | |
420 | 0, /* rightshift */ | |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
b34976b6 | 423 | TRUE, /* pc_relative */ |
5bd4f169 AM |
424 | 0, /* bitpos */ |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 426 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 427 | "R_PPC64_REL14", /* name */ |
b34976b6 | 428 | FALSE, /* partial_inplace */ |
d006db6c | 429 | 0, /* src_mask */ |
f5e87a1d | 430 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 431 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
432 | |
433 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
434 | the branch is expected to be taken. The lower two bits must be | |
435 | zero. */ | |
436 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
437 | 0, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
b34976b6 | 440 | TRUE, /* pc_relative */ |
5bd4f169 AM |
441 | 0, /* bitpos */ |
442 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 443 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 444 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 445 | FALSE, /* partial_inplace */ |
d006db6c | 446 | 0, /* src_mask */ |
f5e87a1d | 447 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 448 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
449 | |
450 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
451 | the branch is not expected to be taken. The lower two bits must | |
452 | be zero. */ | |
453 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
454 | 0, /* rightshift */ | |
455 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
456 | 16, /* bitsize */ | |
b34976b6 | 457 | TRUE, /* pc_relative */ |
5bd4f169 AM |
458 | 0, /* bitpos */ |
459 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 460 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 461 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 462 | FALSE, /* partial_inplace */ |
d006db6c | 463 | 0, /* src_mask */ |
f5e87a1d | 464 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 465 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
466 | |
467 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
468 | symbol. */ | |
469 | HOWTO (R_PPC64_GOT16, /* type */ | |
470 | 0, /* rightshift */ | |
471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 16, /* bitsize */ | |
b34976b6 | 473 | FALSE, /* pc_relative */ |
5bd4f169 AM |
474 | 0, /* bitpos */ |
475 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 476 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 477 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 478 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
479 | 0, /* src_mask */ |
480 | 0xffff, /* dst_mask */ | |
b34976b6 | 481 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
482 | |
483 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
484 | the symbol. */ | |
485 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
486 | 0, /* rightshift */ | |
487 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
488 | 16, /* bitsize */ | |
b34976b6 | 489 | FALSE, /* pc_relative */ |
5bd4f169 AM |
490 | 0, /* bitpos */ |
491 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 492 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 493 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 494 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
495 | 0, /* src_mask */ |
496 | 0xffff, /* dst_mask */ | |
b34976b6 | 497 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
498 | |
499 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
500 | the symbol. */ | |
501 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
502 | 16, /* rightshift */ | |
503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
504 | 16, /* bitsize */ | |
b34976b6 | 505 | FALSE, /* pc_relative */ |
5bd4f169 | 506 | 0, /* bitpos */ |
f9c6b907 | 507 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 508 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 509 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 510 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
511 | 0, /* src_mask */ |
512 | 0xffff, /* dst_mask */ | |
b34976b6 | 513 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
514 | |
515 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
516 | the symbol. */ | |
517 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
518 | 16, /* rightshift */ | |
519 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
520 | 16, /* bitsize */ | |
b34976b6 | 521 | FALSE, /* pc_relative */ |
5bd4f169 | 522 | 0, /* bitpos */ |
f9c6b907 | 523 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 524 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 525 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 526 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
527 | 0, /* src_mask */ |
528 | 0xffff, /* dst_mask */ | |
b34976b6 | 529 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
530 | |
531 | /* This is used only by the dynamic linker. The symbol should exist | |
532 | both in the object being run and in some shared library. The | |
533 | dynamic linker copies the data addressed by the symbol from the | |
534 | shared library into the object, because the object being | |
535 | run has to have the data at some particular address. */ | |
536 | HOWTO (R_PPC64_COPY, /* type */ | |
537 | 0, /* rightshift */ | |
f5e87a1d AM |
538 | 0, /* this one is variable size */ |
539 | 0, /* bitsize */ | |
b34976b6 | 540 | FALSE, /* pc_relative */ |
5bd4f169 | 541 | 0, /* bitpos */ |
f5e87a1d AM |
542 | complain_overflow_dont, /* complain_on_overflow */ |
543 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 544 | "R_PPC64_COPY", /* name */ |
b34976b6 | 545 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
546 | 0, /* src_mask */ |
547 | 0, /* dst_mask */ | |
b34976b6 | 548 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
549 | |
550 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
551 | entries. */ | |
552 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
553 | 0, /* rightshift */ | |
554 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
555 | 64, /* bitsize */ | |
b34976b6 | 556 | FALSE, /* pc_relative */ |
5bd4f169 AM |
557 | 0, /* bitpos */ |
558 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 559 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 560 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 561 | FALSE, /* partial_inplace */ |
5bd4f169 | 562 | 0, /* src_mask */ |
f5e87a1d | 563 | ONES (64), /* dst_mask */ |
b34976b6 | 564 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
565 | |
566 | /* Created by the link editor. Marks a procedure linkage table | |
567 | entry for a symbol. */ | |
568 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
569 | 0, /* rightshift */ | |
570 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
571 | 0, /* bitsize */ | |
b34976b6 | 572 | FALSE, /* pc_relative */ |
5bd4f169 AM |
573 | 0, /* bitpos */ |
574 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 575 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 576 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 577 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
578 | 0, /* src_mask */ |
579 | 0, /* dst_mask */ | |
b34976b6 | 580 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
581 | |
582 | /* Used only by the dynamic linker. When the object is run, this | |
583 | doubleword64 is set to the load address of the object, plus the | |
584 | addend. */ | |
585 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
586 | 0, /* rightshift */ | |
587 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
588 | 64, /* bitsize */ | |
b34976b6 | 589 | FALSE, /* pc_relative */ |
5bd4f169 AM |
590 | 0, /* bitpos */ |
591 | complain_overflow_dont, /* complain_on_overflow */ | |
592 | bfd_elf_generic_reloc, /* special_function */ | |
593 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 594 | FALSE, /* partial_inplace */ |
5bd4f169 | 595 | 0, /* src_mask */ |
f5e87a1d | 596 | ONES (64), /* dst_mask */ |
b34976b6 | 597 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
598 | |
599 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
600 | HOWTO (R_PPC64_UADDR32, /* type */ | |
601 | 0, /* rightshift */ | |
602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
603 | 32, /* bitsize */ | |
b34976b6 | 604 | FALSE, /* pc_relative */ |
5bd4f169 AM |
605 | 0, /* bitpos */ |
606 | complain_overflow_bitfield, /* complain_on_overflow */ | |
607 | bfd_elf_generic_reloc, /* special_function */ | |
608 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 609 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
610 | 0, /* src_mask */ |
611 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 612 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
613 | |
614 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
615 | HOWTO (R_PPC64_UADDR16, /* type */ | |
616 | 0, /* rightshift */ | |
617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 16, /* bitsize */ | |
b34976b6 | 619 | FALSE, /* pc_relative */ |
5bd4f169 AM |
620 | 0, /* bitpos */ |
621 | complain_overflow_bitfield, /* complain_on_overflow */ | |
622 | bfd_elf_generic_reloc, /* special_function */ | |
623 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 624 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
625 | 0, /* src_mask */ |
626 | 0xffff, /* dst_mask */ | |
b34976b6 | 627 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
628 | |
629 | /* 32-bit PC relative. */ | |
630 | HOWTO (R_PPC64_REL32, /* type */ | |
631 | 0, /* rightshift */ | |
632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
633 | 32, /* bitsize */ | |
b34976b6 | 634 | TRUE, /* pc_relative */ |
5bd4f169 | 635 | 0, /* bitpos */ |
cedb70c5 | 636 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
637 | complain_overflow_signed, /* complain_on_overflow */ |
638 | bfd_elf_generic_reloc, /* special_function */ | |
639 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
641 | 0, /* src_mask */ |
642 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 643 | TRUE), /* pcrel_offset */ |
5bd4f169 | 644 | |
10ed1bba | 645 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
646 | HOWTO (R_PPC64_PLT32, /* type */ |
647 | 0, /* rightshift */ | |
648 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 32, /* bitsize */ | |
b34976b6 | 650 | FALSE, /* pc_relative */ |
5bd4f169 AM |
651 | 0, /* bitpos */ |
652 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 653 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 654 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
5bd4f169 | 656 | 0, /* src_mask */ |
f5e87a1d | 657 | 0xffffffff, /* dst_mask */ |
b34976b6 | 658 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
659 | |
660 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
661 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
662 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
663 | 0, /* rightshift */ | |
664 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
665 | 32, /* bitsize */ | |
b34976b6 | 666 | TRUE, /* pc_relative */ |
5bd4f169 AM |
667 | 0, /* bitpos */ |
668 | complain_overflow_signed, /* complain_on_overflow */ | |
669 | bfd_elf_generic_reloc, /* special_function */ | |
670 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 671 | FALSE, /* partial_inplace */ |
5bd4f169 | 672 | 0, /* src_mask */ |
f5e87a1d | 673 | 0xffffffff, /* dst_mask */ |
b34976b6 | 674 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
675 | |
676 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
677 | the symbol. */ | |
678 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
679 | 0, /* rightshift */ | |
680 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 16, /* bitsize */ | |
b34976b6 | 682 | FALSE, /* pc_relative */ |
5bd4f169 AM |
683 | 0, /* bitpos */ |
684 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 685 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 686 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 687 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
688 | 0, /* src_mask */ |
689 | 0xffff, /* dst_mask */ | |
b34976b6 | 690 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
691 | |
692 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
693 | the symbol. */ | |
694 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
695 | 16, /* rightshift */ | |
696 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
697 | 16, /* bitsize */ | |
b34976b6 | 698 | FALSE, /* pc_relative */ |
5bd4f169 | 699 | 0, /* bitpos */ |
f9c6b907 | 700 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 701 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 702 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 703 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
704 | 0, /* src_mask */ |
705 | 0xffff, /* dst_mask */ | |
b34976b6 | 706 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
707 | |
708 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
709 | the symbol. */ | |
710 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
711 | 16, /* rightshift */ | |
712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
713 | 16, /* bitsize */ | |
b34976b6 | 714 | FALSE, /* pc_relative */ |
5bd4f169 | 715 | 0, /* bitpos */ |
f9c6b907 | 716 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 717 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 718 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 719 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
720 | 0, /* src_mask */ |
721 | 0xffff, /* dst_mask */ | |
b34976b6 | 722 | FALSE), /* pcrel_offset */ |
5bd4f169 | 723 | |
c061c2d8 | 724 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
725 | HOWTO (R_PPC64_SECTOFF, /* type */ |
726 | 0, /* rightshift */ | |
c061c2d8 AM |
727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
728 | 16, /* bitsize */ | |
b34976b6 | 729 | FALSE, /* pc_relative */ |
5bd4f169 AM |
730 | 0, /* bitpos */ |
731 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 732 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 733 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 734 | FALSE, /* partial_inplace */ |
5bd4f169 | 735 | 0, /* src_mask */ |
c061c2d8 | 736 | 0xffff, /* dst_mask */ |
b34976b6 | 737 | FALSE), /* pcrel_offset */ |
5bd4f169 | 738 | |
c061c2d8 | 739 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
740 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
741 | 0, /* rightshift */ | |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
5bd4f169 AM |
745 | 0, /* bitpos */ |
746 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 747 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 748 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
753 | |
754 | /* 16-bit upper half section relative relocation. */ | |
755 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
756 | 16, /* rightshift */ | |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 16, /* bitsize */ | |
b34976b6 | 759 | FALSE, /* pc_relative */ |
5bd4f169 | 760 | 0, /* bitpos */ |
f9c6b907 | 761 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 762 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 763 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
765 | 0, /* src_mask */ |
766 | 0xffff, /* dst_mask */ | |
b34976b6 | 767 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
768 | |
769 | /* 16-bit upper half adjusted section relative relocation. */ | |
770 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
771 | 16, /* rightshift */ | |
772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
b34976b6 | 774 | FALSE, /* pc_relative */ |
5bd4f169 | 775 | 0, /* bitpos */ |
f9c6b907 | 776 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 777 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 778 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 779 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
780 | 0, /* src_mask */ |
781 | 0xffff, /* dst_mask */ | |
b34976b6 | 782 | FALSE), /* pcrel_offset */ |
5bd4f169 | 783 | |
04c9666a AM |
784 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
785 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
786 | 2, /* rightshift */ |
787 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 30, /* bitsize */ | |
b34976b6 | 789 | TRUE, /* pc_relative */ |
5bd4f169 AM |
790 | 0, /* bitpos */ |
791 | complain_overflow_dont, /* complain_on_overflow */ | |
792 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 793 | "R_PPC64_REL30", /* name */ |
b34976b6 | 794 | FALSE, /* partial_inplace */ |
d006db6c | 795 | 0, /* src_mask */ |
5bd4f169 | 796 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 797 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
798 | |
799 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
800 | ||
801 | /* A standard 64-bit relocation. */ | |
802 | HOWTO (R_PPC64_ADDR64, /* type */ | |
803 | 0, /* rightshift */ | |
804 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
805 | 64, /* bitsize */ | |
b34976b6 | 806 | FALSE, /* pc_relative */ |
5bd4f169 AM |
807 | 0, /* bitpos */ |
808 | complain_overflow_dont, /* complain_on_overflow */ | |
809 | bfd_elf_generic_reloc, /* special_function */ | |
810 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 811 | FALSE, /* partial_inplace */ |
5bd4f169 | 812 | 0, /* src_mask */ |
f5e87a1d | 813 | ONES (64), /* dst_mask */ |
b34976b6 | 814 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
815 | |
816 | /* The bits 32-47 of an address. */ | |
817 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
818 | 32, /* rightshift */ | |
819 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
820 | 16, /* bitsize */ | |
b34976b6 | 821 | FALSE, /* pc_relative */ |
5bd4f169 AM |
822 | 0, /* bitpos */ |
823 | complain_overflow_dont, /* complain_on_overflow */ | |
824 | bfd_elf_generic_reloc, /* special_function */ | |
825 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 826 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
827 | 0, /* src_mask */ |
828 | 0xffff, /* dst_mask */ | |
b34976b6 | 829 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
830 | |
831 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
832 | 16 bits, treated as a signed number, is negative. */ | |
833 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
834 | 32, /* rightshift */ | |
835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
836 | 16, /* bitsize */ | |
b34976b6 | 837 | FALSE, /* pc_relative */ |
5bd4f169 AM |
838 | 0, /* bitpos */ |
839 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 840 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 841 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 842 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
843 | 0, /* src_mask */ |
844 | 0xffff, /* dst_mask */ | |
b34976b6 | 845 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
846 | |
847 | /* The bits 48-63 of an address. */ | |
848 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
849 | 48, /* rightshift */ | |
850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
851 | 16, /* bitsize */ | |
b34976b6 | 852 | FALSE, /* pc_relative */ |
5bd4f169 AM |
853 | 0, /* bitpos */ |
854 | complain_overflow_dont, /* complain_on_overflow */ | |
855 | bfd_elf_generic_reloc, /* special_function */ | |
856 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 857 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
858 | 0, /* src_mask */ |
859 | 0xffff, /* dst_mask */ | |
b34976b6 | 860 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
861 | |
862 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
863 | 16 bits, treated as a signed number, is negative. */ | |
864 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
865 | 48, /* rightshift */ | |
866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
867 | 16, /* bitsize */ | |
b34976b6 | 868 | FALSE, /* pc_relative */ |
5bd4f169 AM |
869 | 0, /* bitpos */ |
870 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 871 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 872 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 873 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
874 | 0, /* src_mask */ |
875 | 0xffff, /* dst_mask */ | |
b34976b6 | 876 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
877 | |
878 | /* Like ADDR64, but may be unaligned. */ | |
879 | HOWTO (R_PPC64_UADDR64, /* type */ | |
880 | 0, /* rightshift */ | |
881 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
882 | 64, /* bitsize */ | |
b34976b6 | 883 | FALSE, /* pc_relative */ |
5bd4f169 AM |
884 | 0, /* bitpos */ |
885 | complain_overflow_dont, /* complain_on_overflow */ | |
886 | bfd_elf_generic_reloc, /* special_function */ | |
887 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 888 | FALSE, /* partial_inplace */ |
5bd4f169 | 889 | 0, /* src_mask */ |
f5e87a1d | 890 | ONES (64), /* dst_mask */ |
b34976b6 | 891 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
892 | |
893 | /* 64-bit relative relocation. */ | |
894 | HOWTO (R_PPC64_REL64, /* type */ | |
895 | 0, /* rightshift */ | |
896 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
897 | 64, /* bitsize */ | |
b34976b6 | 898 | TRUE, /* pc_relative */ |
5bd4f169 AM |
899 | 0, /* bitpos */ |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
901 | bfd_elf_generic_reloc, /* special_function */ | |
902 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
5bd4f169 | 904 | 0, /* src_mask */ |
f5e87a1d | 905 | ONES (64), /* dst_mask */ |
b34976b6 | 906 | TRUE), /* pcrel_offset */ |
5bd4f169 | 907 | |
cedb70c5 | 908 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
909 | HOWTO (R_PPC64_PLT64, /* type */ |
910 | 0, /* rightshift */ | |
911 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
912 | 64, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 916 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 917 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 | 919 | 0, /* src_mask */ |
f5e87a1d | 920 | ONES (64), /* dst_mask */ |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
924 | table. */ | |
925 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
926 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
927 | 0, /* rightshift */ | |
928 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
929 | 64, /* bitsize */ | |
b34976b6 | 930 | TRUE, /* pc_relative */ |
5bd4f169 AM |
931 | 0, /* bitpos */ |
932 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 933 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 934 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
5bd4f169 | 936 | 0, /* src_mask */ |
f5e87a1d | 937 | ONES (64), /* dst_mask */ |
b34976b6 | 938 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
939 | |
940 | /* 16 bit TOC-relative relocation. */ | |
941 | ||
942 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
943 | HOWTO (R_PPC64_TOC16, /* type */ | |
944 | 0, /* rightshift */ | |
945 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
946 | 16, /* bitsize */ | |
b34976b6 | 947 | FALSE, /* pc_relative */ |
5bd4f169 AM |
948 | 0, /* bitpos */ |
949 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 950 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 951 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 952 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
953 | 0, /* src_mask */ |
954 | 0xffff, /* dst_mask */ | |
b34976b6 | 955 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
956 | |
957 | /* 16 bit TOC-relative relocation without overflow. */ | |
958 | ||
959 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
960 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
961 | 0, /* rightshift */ | |
962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 16, /* bitsize */ | |
b34976b6 | 964 | FALSE, /* pc_relative */ |
5bd4f169 AM |
965 | 0, /* bitpos */ |
966 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 967 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 968 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 969 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
970 | 0, /* src_mask */ |
971 | 0xffff, /* dst_mask */ | |
b34976b6 | 972 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
973 | |
974 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
975 | ||
976 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
977 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
978 | 16, /* rightshift */ | |
979 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
980 | 16, /* bitsize */ | |
b34976b6 | 981 | FALSE, /* pc_relative */ |
5bd4f169 | 982 | 0, /* bitpos */ |
f9c6b907 | 983 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 984 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 985 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 986 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
987 | 0, /* src_mask */ |
988 | 0xffff, /* dst_mask */ | |
b34976b6 | 989 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
990 | |
991 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
992 | contents of the low 16 bits, treated as a signed number, is | |
993 | negative. */ | |
994 | ||
995 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
996 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
997 | 16, /* rightshift */ | |
998 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 16, /* bitsize */ | |
b34976b6 | 1000 | FALSE, /* pc_relative */ |
5bd4f169 | 1001 | 0, /* bitpos */ |
f9c6b907 | 1002 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1003 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1004 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1005 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1006 | 0, /* src_mask */ |
1007 | 0xffff, /* dst_mask */ | |
b34976b6 | 1008 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1009 | |
1010 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1011 | ||
1012 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1013 | HOWTO (R_PPC64_TOC, /* type */ | |
1014 | 0, /* rightshift */ | |
1015 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1016 | 64, /* bitsize */ | |
b34976b6 | 1017 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1018 | 0, /* bitpos */ |
1019 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1020 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1021 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1022 | FALSE, /* partial_inplace */ |
5bd4f169 | 1023 | 0, /* src_mask */ |
f5e87a1d | 1024 | ONES (64), /* dst_mask */ |
b34976b6 | 1025 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1026 | |
1027 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1028 | value to relocate may (!) refer to a PLT entry which the link | |
1029 | editor (a) may replace with the symbol value. If the link editor | |
1030 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1031 | entry and store the address to the new PLT entry in the GOT. | |
1032 | This permits lazy resolution of function symbols at run time. | |
1033 | The link editor may also skip all of this and just (c) emit a | |
1034 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1035 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1036 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1037 | 0, /* rightshift */ | |
1038 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1039 | 16, /* bitsize */ | |
b34976b6 | 1040 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1041 | 0, /* bitpos */ |
1042 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1043 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1044 | "R_PPC64_PLTGOT16", /* name */ |
1045 | FALSE, /* partial_inplace */ | |
1046 | 0, /* src_mask */ | |
1047 | 0xffff, /* dst_mask */ | |
1048 | FALSE), /* pcrel_offset */ | |
1049 | ||
1050 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1051 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1052 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1053 | 0, /* rightshift */ | |
1054 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1055 | 16, /* bitsize */ | |
1056 | FALSE, /* pc_relative */ | |
1057 | 0, /* bitpos */ | |
1058 | complain_overflow_dont, /* complain_on_overflow */ | |
1059 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1060 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1061 | FALSE, /* partial_inplace */ | |
1062 | 0, /* src_mask */ | |
1063 | 0xffff, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
1065 | ||
1066 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1067 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1068 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1069 | 16, /* rightshift */ | |
1070 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1071 | 16, /* bitsize */ | |
1072 | FALSE, /* pc_relative */ | |
1073 | 0, /* bitpos */ | |
f9c6b907 | 1074 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1075 | ppc64_elf_unhandled_reloc, /* special_function */ |
1076 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1077 | FALSE, /* partial_inplace */ | |
1078 | 0, /* src_mask */ | |
1079 | 0xffff, /* dst_mask */ | |
1080 | FALSE), /* pcrel_offset */ | |
1081 | ||
1082 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1083 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1084 | is negative. */ | |
1085 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1086 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1087 | 16, /* rightshift */ | |
1088 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1089 | 16, /* bitsize */ | |
1090 | FALSE, /* pc_relative */ | |
1091 | 0, /* bitpos */ | |
f9c6b907 | 1092 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1093 | ppc64_elf_unhandled_reloc, /* special_function */ |
1094 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1095 | FALSE, /* partial_inplace */ | |
1096 | 0, /* src_mask */ | |
1097 | 0xffff, /* dst_mask */ | |
1098 | FALSE), /* pcrel_offset */ | |
1099 | ||
1100 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1101 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1102 | 0, /* rightshift */ | |
1103 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1104 | 16, /* bitsize */ | |
1105 | FALSE, /* pc_relative */ | |
1106 | 0, /* bitpos */ | |
1107 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1108 | bfd_elf_generic_reloc, /* special_function */ | |
1109 | "R_PPC64_ADDR16_DS", /* name */ | |
1110 | FALSE, /* partial_inplace */ | |
1111 | 0, /* src_mask */ | |
1112 | 0xfffc, /* dst_mask */ | |
1113 | FALSE), /* pcrel_offset */ | |
1114 | ||
1115 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1116 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1117 | 0, /* rightshift */ | |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
1122 | complain_overflow_dont,/* complain_on_overflow */ | |
1123 | bfd_elf_generic_reloc, /* special_function */ | |
1124 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0, /* src_mask */ | |
1127 | 0xfffc, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
1130 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1131 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_signed, /* complain_on_overflow */ | |
1138 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1139 | "R_PPC64_GOT16_DS", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1146 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont, /* complain_on_overflow */ | |
1153 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1154 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
1159 | ||
1160 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1161 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1169 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xfffc, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
1174 | ||
1175 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1176 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1183 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1184 | "R_PPC64_SECTOFF_DS", /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0xfffc, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1190 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1191 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
1198 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1199 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xfffc, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1206 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1207 | 0, /* rightshift */ | |
1208 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 16, /* bitsize */ | |
1210 | FALSE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
1212 | complain_overflow_signed, /* complain_on_overflow */ | |
1213 | ppc64_elf_toc_reloc, /* special_function */ | |
1214 | "R_PPC64_TOC16_DS", /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0, /* src_mask */ | |
1217 | 0xfffc, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
1220 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1221 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1222 | 0, /* rightshift */ | |
1223 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 16, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 0, /* bitpos */ | |
1227 | complain_overflow_dont, /* complain_on_overflow */ | |
1228 | ppc64_elf_toc_reloc, /* special_function */ | |
1229 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0, /* src_mask */ | |
1232 | 0xfffc, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1236 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1237 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1238 | 0, /* rightshift */ |
1239 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1240 | 16, /* bitsize */ | |
1241 | FALSE, /* pc_relative */ | |
1242 | 0, /* bitpos */ | |
1243 | complain_overflow_signed, /* complain_on_overflow */ | |
1244 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1245 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1246 | FALSE, /* partial_inplace */ | |
1247 | 0, /* src_mask */ | |
1248 | 0xfffc, /* dst_mask */ | |
1249 | FALSE), /* pcrel_offset */ | |
1250 | ||
1251 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1252 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1253 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1254 | 0, /* rightshift */ | |
1255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1256 | 16, /* bitsize */ | |
1257 | FALSE, /* pc_relative */ | |
1258 | 0, /* bitpos */ | |
1259 | complain_overflow_dont, /* complain_on_overflow */ | |
1260 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1261 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1262 | FALSE, /* partial_inplace */ | |
1263 | 0, /* src_mask */ | |
1264 | 0xfffc, /* dst_mask */ | |
1265 | FALSE), /* pcrel_offset */ | |
1266 | ||
727fc41e | 1267 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1268 | HOWTO (R_PPC64_TLS, |
1269 | 0, /* rightshift */ | |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 32, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
1273 | 0, /* bitpos */ | |
1274 | complain_overflow_dont, /* complain_on_overflow */ | |
1275 | bfd_elf_generic_reloc, /* special_function */ | |
1276 | "R_PPC64_TLS", /* name */ | |
1277 | FALSE, /* partial_inplace */ | |
1278 | 0, /* src_mask */ | |
1279 | 0, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
727fc41e AM |
1282 | HOWTO (R_PPC64_TLSGD, |
1283 | 0, /* rightshift */ | |
1284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1285 | 32, /* bitsize */ | |
1286 | FALSE, /* pc_relative */ | |
1287 | 0, /* bitpos */ | |
1288 | complain_overflow_dont, /* complain_on_overflow */ | |
1289 | bfd_elf_generic_reloc, /* special_function */ | |
1290 | "R_PPC64_TLSGD", /* name */ | |
1291 | FALSE, /* partial_inplace */ | |
1292 | 0, /* src_mask */ | |
1293 | 0, /* dst_mask */ | |
1294 | FALSE), /* pcrel_offset */ | |
1295 | ||
1296 | HOWTO (R_PPC64_TLSLD, | |
1297 | 0, /* rightshift */ | |
1298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 32, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | bfd_elf_generic_reloc, /* special_function */ | |
1304 | "R_PPC64_TLSLD", /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0, /* src_mask */ | |
1307 | 0, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
3b421ab3 AM |
1310 | HOWTO (R_PPC64_TOCSAVE, |
1311 | 0, /* rightshift */ | |
1312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 32, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
1315 | 0, /* bitpos */ | |
1316 | complain_overflow_dont, /* complain_on_overflow */ | |
1317 | bfd_elf_generic_reloc, /* special_function */ | |
1318 | "R_PPC64_TOCSAVE", /* name */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0, /* src_mask */ | |
1321 | 0, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | ||
411e1bfb AM |
1324 | /* Computes the load module index of the load module that contains the |
1325 | definition of its TLS sym. */ | |
1326 | HOWTO (R_PPC64_DTPMOD64, | |
1327 | 0, /* rightshift */ | |
1328 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 64, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1334 | "R_PPC64_DTPMOD64", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | ONES (64), /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | /* Computes a dtv-relative displacement, the difference between the value | |
1341 | of sym+add and the base address of the thread-local storage block that | |
1342 | contains the definition of sym, minus 0x8000. */ | |
1343 | HOWTO (R_PPC64_DTPREL64, | |
1344 | 0, /* rightshift */ | |
1345 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1346 | 64, /* bitsize */ | |
1347 | FALSE, /* pc_relative */ | |
1348 | 0, /* bitpos */ | |
1349 | complain_overflow_dont, /* complain_on_overflow */ | |
1350 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1351 | "R_PPC64_DTPREL64", /* name */ | |
1352 | FALSE, /* partial_inplace */ | |
1353 | 0, /* src_mask */ | |
1354 | ONES (64), /* dst_mask */ | |
1355 | FALSE), /* pcrel_offset */ | |
1356 | ||
1357 | /* A 16 bit dtprel reloc. */ | |
1358 | HOWTO (R_PPC64_DTPREL16, | |
1359 | 0, /* rightshift */ | |
1360 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1361 | 16, /* bitsize */ | |
1362 | FALSE, /* pc_relative */ | |
1363 | 0, /* bitpos */ | |
1364 | complain_overflow_signed, /* complain_on_overflow */ | |
1365 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1366 | "R_PPC64_DTPREL16", /* name */ | |
1367 | FALSE, /* partial_inplace */ | |
1368 | 0, /* src_mask */ | |
1369 | 0xffff, /* dst_mask */ | |
1370 | FALSE), /* pcrel_offset */ | |
1371 | ||
1372 | /* Like DTPREL16, but no overflow. */ | |
1373 | HOWTO (R_PPC64_DTPREL16_LO, | |
1374 | 0, /* rightshift */ | |
1375 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1376 | 16, /* bitsize */ | |
1377 | FALSE, /* pc_relative */ | |
1378 | 0, /* bitpos */ | |
1379 | complain_overflow_dont, /* complain_on_overflow */ | |
1380 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1381 | "R_PPC64_DTPREL16_LO", /* name */ | |
1382 | FALSE, /* partial_inplace */ | |
1383 | 0, /* src_mask */ | |
1384 | 0xffff, /* dst_mask */ | |
1385 | FALSE), /* pcrel_offset */ | |
1386 | ||
1387 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1388 | HOWTO (R_PPC64_DTPREL16_HI, | |
1389 | 16, /* rightshift */ | |
1390 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1391 | 16, /* bitsize */ | |
1392 | FALSE, /* pc_relative */ | |
1393 | 0, /* bitpos */ | |
f9c6b907 | 1394 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1395 | ppc64_elf_unhandled_reloc, /* special_function */ |
1396 | "R_PPC64_DTPREL16_HI", /* name */ | |
1397 | FALSE, /* partial_inplace */ | |
1398 | 0, /* src_mask */ | |
1399 | 0xffff, /* dst_mask */ | |
1400 | FALSE), /* pcrel_offset */ | |
1401 | ||
1402 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1403 | HOWTO (R_PPC64_DTPREL16_HA, | |
1404 | 16, /* rightshift */ | |
1405 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1406 | 16, /* bitsize */ | |
1407 | FALSE, /* pc_relative */ | |
1408 | 0, /* bitpos */ | |
f9c6b907 | 1409 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1410 | ppc64_elf_unhandled_reloc, /* special_function */ |
1411 | "R_PPC64_DTPREL16_HA", /* name */ | |
1412 | FALSE, /* partial_inplace */ | |
1413 | 0, /* src_mask */ | |
1414 | 0xffff, /* dst_mask */ | |
1415 | FALSE), /* pcrel_offset */ | |
1416 | ||
1417 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1418 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1419 | 32, /* rightshift */ | |
1420 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1421 | 16, /* bitsize */ | |
1422 | FALSE, /* pc_relative */ | |
1423 | 0, /* bitpos */ | |
1424 | complain_overflow_dont, /* complain_on_overflow */ | |
1425 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1426 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1427 | FALSE, /* partial_inplace */ | |
1428 | 0, /* src_mask */ | |
1429 | 0xffff, /* dst_mask */ | |
1430 | FALSE), /* pcrel_offset */ | |
1431 | ||
1432 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1433 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1434 | 32, /* rightshift */ | |
1435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1436 | 16, /* bitsize */ | |
1437 | FALSE, /* pc_relative */ | |
1438 | 0, /* bitpos */ | |
1439 | complain_overflow_dont, /* complain_on_overflow */ | |
1440 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1441 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1442 | FALSE, /* partial_inplace */ | |
1443 | 0, /* src_mask */ | |
1444 | 0xffff, /* dst_mask */ | |
1445 | FALSE), /* pcrel_offset */ | |
1446 | ||
1447 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1448 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1449 | 48, /* rightshift */ | |
1450 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1451 | 16, /* bitsize */ | |
1452 | FALSE, /* pc_relative */ | |
1453 | 0, /* bitpos */ | |
1454 | complain_overflow_dont, /* complain_on_overflow */ | |
1455 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1456 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0, /* src_mask */ | |
1459 | 0xffff, /* dst_mask */ | |
1460 | FALSE), /* pcrel_offset */ | |
1461 | ||
1462 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1463 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1464 | 48, /* rightshift */ | |
1465 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1466 | 16, /* bitsize */ | |
1467 | FALSE, /* pc_relative */ | |
1468 | 0, /* bitpos */ | |
1469 | complain_overflow_dont, /* complain_on_overflow */ | |
1470 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1471 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1472 | FALSE, /* partial_inplace */ | |
1473 | 0, /* src_mask */ | |
1474 | 0xffff, /* dst_mask */ | |
1475 | FALSE), /* pcrel_offset */ | |
1476 | ||
1477 | /* Like DTPREL16, but for insns with a DS field. */ | |
1478 | HOWTO (R_PPC64_DTPREL16_DS, | |
1479 | 0, /* rightshift */ | |
1480 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1481 | 16, /* bitsize */ | |
1482 | FALSE, /* pc_relative */ | |
1483 | 0, /* bitpos */ | |
1484 | complain_overflow_signed, /* complain_on_overflow */ | |
1485 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1486 | "R_PPC64_DTPREL16_DS", /* name */ | |
1487 | FALSE, /* partial_inplace */ | |
1488 | 0, /* src_mask */ | |
1489 | 0xfffc, /* dst_mask */ | |
1490 | FALSE), /* pcrel_offset */ | |
1491 | ||
1492 | /* Like DTPREL16_DS, but no overflow. */ | |
1493 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1494 | 0, /* rightshift */ | |
1495 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1496 | 16, /* bitsize */ | |
1497 | FALSE, /* pc_relative */ | |
1498 | 0, /* bitpos */ | |
1499 | complain_overflow_dont, /* complain_on_overflow */ | |
1500 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1501 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1502 | FALSE, /* partial_inplace */ | |
1503 | 0, /* src_mask */ | |
1504 | 0xfffc, /* dst_mask */ | |
1505 | FALSE), /* pcrel_offset */ | |
1506 | ||
1507 | /* Computes a tp-relative displacement, the difference between the value of | |
1508 | sym+add and the value of the thread pointer (r13). */ | |
1509 | HOWTO (R_PPC64_TPREL64, | |
1510 | 0, /* rightshift */ | |
1511 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1512 | 64, /* bitsize */ | |
1513 | FALSE, /* pc_relative */ | |
1514 | 0, /* bitpos */ | |
1515 | complain_overflow_dont, /* complain_on_overflow */ | |
1516 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1517 | "R_PPC64_TPREL64", /* name */ | |
1518 | FALSE, /* partial_inplace */ | |
1519 | 0, /* src_mask */ | |
1520 | ONES (64), /* dst_mask */ | |
1521 | FALSE), /* pcrel_offset */ | |
1522 | ||
1523 | /* A 16 bit tprel reloc. */ | |
1524 | HOWTO (R_PPC64_TPREL16, | |
1525 | 0, /* rightshift */ | |
1526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1527 | 16, /* bitsize */ | |
1528 | FALSE, /* pc_relative */ | |
1529 | 0, /* bitpos */ | |
1530 | complain_overflow_signed, /* complain_on_overflow */ | |
1531 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1532 | "R_PPC64_TPREL16", /* name */ | |
1533 | FALSE, /* partial_inplace */ | |
1534 | 0, /* src_mask */ | |
1535 | 0xffff, /* dst_mask */ | |
1536 | FALSE), /* pcrel_offset */ | |
1537 | ||
1538 | /* Like TPREL16, but no overflow. */ | |
1539 | HOWTO (R_PPC64_TPREL16_LO, | |
1540 | 0, /* rightshift */ | |
1541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1542 | 16, /* bitsize */ | |
1543 | FALSE, /* pc_relative */ | |
1544 | 0, /* bitpos */ | |
1545 | complain_overflow_dont, /* complain_on_overflow */ | |
1546 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1547 | "R_PPC64_TPREL16_LO", /* name */ | |
1548 | FALSE, /* partial_inplace */ | |
1549 | 0, /* src_mask */ | |
1550 | 0xffff, /* dst_mask */ | |
1551 | FALSE), /* pcrel_offset */ | |
1552 | ||
1553 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1554 | HOWTO (R_PPC64_TPREL16_HI, | |
1555 | 16, /* rightshift */ | |
1556 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1557 | 16, /* bitsize */ | |
1558 | FALSE, /* pc_relative */ | |
1559 | 0, /* bitpos */ | |
f9c6b907 | 1560 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1561 | ppc64_elf_unhandled_reloc, /* special_function */ |
1562 | "R_PPC64_TPREL16_HI", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0, /* src_mask */ | |
1565 | 0xffff, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | ||
1568 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1569 | HOWTO (R_PPC64_TPREL16_HA, | |
1570 | 16, /* rightshift */ | |
1571 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1572 | 16, /* bitsize */ | |
1573 | FALSE, /* pc_relative */ | |
1574 | 0, /* bitpos */ | |
f9c6b907 | 1575 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1576 | ppc64_elf_unhandled_reloc, /* special_function */ |
1577 | "R_PPC64_TPREL16_HA", /* name */ | |
1578 | FALSE, /* partial_inplace */ | |
1579 | 0, /* src_mask */ | |
1580 | 0xffff, /* dst_mask */ | |
1581 | FALSE), /* pcrel_offset */ | |
1582 | ||
1583 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1584 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1585 | 32, /* rightshift */ | |
1586 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1587 | 16, /* bitsize */ | |
1588 | FALSE, /* pc_relative */ | |
1589 | 0, /* bitpos */ | |
1590 | complain_overflow_dont, /* complain_on_overflow */ | |
1591 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1592 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1593 | FALSE, /* partial_inplace */ | |
1594 | 0, /* src_mask */ | |
1595 | 0xffff, /* dst_mask */ | |
1596 | FALSE), /* pcrel_offset */ | |
1597 | ||
1598 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1599 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1600 | 32, /* rightshift */ | |
1601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1602 | 16, /* bitsize */ | |
1603 | FALSE, /* pc_relative */ | |
1604 | 0, /* bitpos */ | |
1605 | complain_overflow_dont, /* complain_on_overflow */ | |
1606 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1607 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1608 | FALSE, /* partial_inplace */ | |
1609 | 0, /* src_mask */ | |
1610 | 0xffff, /* dst_mask */ | |
1611 | FALSE), /* pcrel_offset */ | |
1612 | ||
1613 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1614 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1615 | 48, /* rightshift */ | |
1616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1617 | 16, /* bitsize */ | |
1618 | FALSE, /* pc_relative */ | |
1619 | 0, /* bitpos */ | |
1620 | complain_overflow_dont, /* complain_on_overflow */ | |
1621 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1622 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1623 | FALSE, /* partial_inplace */ | |
1624 | 0, /* src_mask */ | |
1625 | 0xffff, /* dst_mask */ | |
1626 | FALSE), /* pcrel_offset */ | |
1627 | ||
1628 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1629 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1630 | 48, /* rightshift */ | |
1631 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1632 | 16, /* bitsize */ | |
1633 | FALSE, /* pc_relative */ | |
1634 | 0, /* bitpos */ | |
1635 | complain_overflow_dont, /* complain_on_overflow */ | |
1636 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1637 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1638 | FALSE, /* partial_inplace */ | |
1639 | 0, /* src_mask */ | |
1640 | 0xffff, /* dst_mask */ | |
1641 | FALSE), /* pcrel_offset */ | |
1642 | ||
1643 | /* Like TPREL16, but for insns with a DS field. */ | |
1644 | HOWTO (R_PPC64_TPREL16_DS, | |
1645 | 0, /* rightshift */ | |
1646 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1647 | 16, /* bitsize */ | |
1648 | FALSE, /* pc_relative */ | |
1649 | 0, /* bitpos */ | |
1650 | complain_overflow_signed, /* complain_on_overflow */ | |
1651 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1652 | "R_PPC64_TPREL16_DS", /* name */ | |
1653 | FALSE, /* partial_inplace */ | |
1654 | 0, /* src_mask */ | |
1655 | 0xfffc, /* dst_mask */ | |
1656 | FALSE), /* pcrel_offset */ | |
1657 | ||
1658 | /* Like TPREL16_DS, but no overflow. */ | |
1659 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1660 | 0, /* rightshift */ | |
1661 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1662 | 16, /* bitsize */ | |
1663 | FALSE, /* pc_relative */ | |
1664 | 0, /* bitpos */ | |
1665 | complain_overflow_dont, /* complain_on_overflow */ | |
1666 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1667 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1668 | FALSE, /* partial_inplace */ | |
1669 | 0, /* src_mask */ | |
1670 | 0xfffc, /* dst_mask */ | |
1671 | FALSE), /* pcrel_offset */ | |
1672 | ||
1673 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1674 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1675 | to the first entry relative to the TOC base (r2). */ | |
1676 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1677 | 0, /* rightshift */ | |
1678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1679 | 16, /* bitsize */ | |
1680 | FALSE, /* pc_relative */ | |
1681 | 0, /* bitpos */ | |
1682 | complain_overflow_signed, /* complain_on_overflow */ | |
1683 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1684 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1685 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1686 | 0, /* src_mask */ |
1687 | 0xffff, /* dst_mask */ | |
b34976b6 | 1688 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1689 | |
411e1bfb AM |
1690 | /* Like GOT_TLSGD16, but no overflow. */ |
1691 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1692 | 0, /* rightshift */ |
1693 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1694 | 16, /* bitsize */ | |
b34976b6 | 1695 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1696 | 0, /* bitpos */ |
1697 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1698 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1699 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1700 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1701 | 0, /* src_mask */ |
1702 | 0xffff, /* dst_mask */ | |
b34976b6 | 1703 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1704 | |
411e1bfb AM |
1705 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1706 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1707 | 16, /* rightshift */ |
1708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1709 | 16, /* bitsize */ | |
b34976b6 | 1710 | FALSE, /* pc_relative */ |
5bd4f169 | 1711 | 0, /* bitpos */ |
f9c6b907 | 1712 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1713 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1714 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1715 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1716 | 0, /* src_mask */ |
1717 | 0xffff, /* dst_mask */ | |
b34976b6 | 1718 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1719 | |
411e1bfb AM |
1720 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1721 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1722 | 16, /* rightshift */ |
1723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1724 | 16, /* bitsize */ | |
b34976b6 | 1725 | FALSE, /* pc_relative */ |
5bd4f169 | 1726 | 0, /* bitpos */ |
f9c6b907 | 1727 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1728 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1729 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1730 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1731 | 0, /* src_mask */ |
1732 | 0xffff, /* dst_mask */ | |
b34976b6 | 1733 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1734 | |
411e1bfb AM |
1735 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1736 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1737 | first entry relative to the TOC base (r2). */ | |
1738 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1739 | 0, /* rightshift */ |
1740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1741 | 16, /* bitsize */ | |
b34976b6 | 1742 | FALSE, /* pc_relative */ |
5bd4f169 | 1743 | 0, /* bitpos */ |
411e1bfb AM |
1744 | complain_overflow_signed, /* complain_on_overflow */ |
1745 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1746 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1747 | FALSE, /* partial_inplace */ |
d006db6c | 1748 | 0, /* src_mask */ |
411e1bfb | 1749 | 0xffff, /* dst_mask */ |
b34976b6 | 1750 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1751 | |
411e1bfb AM |
1752 | /* Like GOT_TLSLD16, but no overflow. */ |
1753 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1754 | 0, /* rightshift */ |
1755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1756 | 16, /* bitsize */ | |
b34976b6 | 1757 | FALSE, /* pc_relative */ |
5bd4f169 | 1758 | 0, /* bitpos */ |
411e1bfb AM |
1759 | complain_overflow_dont, /* complain_on_overflow */ |
1760 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1761 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1762 | FALSE, /* partial_inplace */ |
d006db6c | 1763 | 0, /* src_mask */ |
411e1bfb | 1764 | 0xffff, /* dst_mask */ |
b34976b6 | 1765 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1766 | |
411e1bfb AM |
1767 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1768 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1769 | 16, /* rightshift */ | |
5bd4f169 AM |
1770 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1771 | 16, /* bitsize */ | |
b34976b6 | 1772 | FALSE, /* pc_relative */ |
5bd4f169 | 1773 | 0, /* bitpos */ |
f9c6b907 | 1774 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1775 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1776 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1777 | FALSE, /* partial_inplace */ |
d006db6c | 1778 | 0, /* src_mask */ |
411e1bfb | 1779 | 0xffff, /* dst_mask */ |
b34976b6 | 1780 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1781 | |
411e1bfb AM |
1782 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1783 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1784 | 16, /* rightshift */ | |
5bd4f169 AM |
1785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1786 | 16, /* bitsize */ | |
b34976b6 | 1787 | FALSE, /* pc_relative */ |
5bd4f169 | 1788 | 0, /* bitpos */ |
f9c6b907 | 1789 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1790 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1791 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1792 | FALSE, /* partial_inplace */ |
d006db6c | 1793 | 0, /* src_mask */ |
411e1bfb | 1794 | 0xffff, /* dst_mask */ |
b34976b6 | 1795 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1796 | |
411e1bfb AM |
1797 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1798 | the offset to the entry relative to the TOC base (r2). */ | |
1799 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1800 | 0, /* rightshift */ |
1801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
b34976b6 | 1803 | FALSE, /* pc_relative */ |
5bd4f169 | 1804 | 0, /* bitpos */ |
411e1bfb | 1805 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1806 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1807 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1808 | FALSE, /* partial_inplace */ |
d006db6c | 1809 | 0, /* src_mask */ |
5bd4f169 | 1810 | 0xfffc, /* dst_mask */ |
b34976b6 | 1811 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1812 | |
411e1bfb AM |
1813 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1814 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1815 | 0, /* rightshift */ |
c061c2d8 AM |
1816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1817 | 16, /* bitsize */ | |
b34976b6 | 1818 | FALSE, /* pc_relative */ |
5bd4f169 | 1819 | 0, /* bitpos */ |
411e1bfb AM |
1820 | complain_overflow_dont, /* complain_on_overflow */ |
1821 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1822 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1823 | FALSE, /* partial_inplace */ |
d006db6c | 1824 | 0, /* src_mask */ |
c061c2d8 | 1825 | 0xfffc, /* dst_mask */ |
b34976b6 | 1826 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1827 | |
411e1bfb AM |
1828 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1829 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1830 | 16, /* rightshift */ | |
5bd4f169 AM |
1831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1832 | 16, /* bitsize */ | |
b34976b6 | 1833 | FALSE, /* pc_relative */ |
5bd4f169 | 1834 | 0, /* bitpos */ |
f9c6b907 | 1835 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1836 | ppc64_elf_unhandled_reloc, /* special_function */ |
1837 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1838 | FALSE, /* partial_inplace */ |
d006db6c | 1839 | 0, /* src_mask */ |
411e1bfb | 1840 | 0xffff, /* dst_mask */ |
b34976b6 | 1841 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1842 | |
411e1bfb AM |
1843 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1844 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1845 | 16, /* rightshift */ | |
1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1847 | 16, /* bitsize */ | |
1848 | FALSE, /* pc_relative */ | |
1849 | 0, /* bitpos */ | |
f9c6b907 | 1850 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1851 | ppc64_elf_unhandled_reloc, /* special_function */ |
1852 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1853 | FALSE, /* partial_inplace */ | |
1854 | 0, /* src_mask */ | |
1855 | 0xffff, /* dst_mask */ | |
1856 | FALSE), /* pcrel_offset */ | |
1857 | ||
1858 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1859 | offset to the entry relative to the TOC base (r2). */ | |
1860 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1861 | 0, /* rightshift */ |
1862 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1863 | 16, /* bitsize */ | |
b34976b6 | 1864 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1865 | 0, /* bitpos */ |
1866 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1867 | ppc64_elf_unhandled_reloc, /* special_function */ |
1868 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1869 | FALSE, /* partial_inplace */ |
d006db6c | 1870 | 0, /* src_mask */ |
ad8e1ba5 | 1871 | 0xfffc, /* dst_mask */ |
b34976b6 | 1872 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1873 | |
411e1bfb AM |
1874 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1875 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1876 | 0, /* rightshift */ |
1877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1878 | 16, /* bitsize */ | |
b34976b6 | 1879 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1880 | 0, /* bitpos */ |
1881 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1882 | ppc64_elf_unhandled_reloc, /* special_function */ |
1883 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1884 | FALSE, /* partial_inplace */ |
d006db6c | 1885 | 0, /* src_mask */ |
ad8e1ba5 | 1886 | 0xfffc, /* dst_mask */ |
b34976b6 | 1887 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1888 | |
411e1bfb AM |
1889 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1890 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1891 | 16, /* rightshift */ | |
5bd4f169 AM |
1892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1893 | 16, /* bitsize */ | |
b34976b6 | 1894 | FALSE, /* pc_relative */ |
5bd4f169 | 1895 | 0, /* bitpos */ |
f9c6b907 | 1896 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1897 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1898 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1899 | FALSE, /* partial_inplace */ |
d006db6c | 1900 | 0, /* src_mask */ |
411e1bfb | 1901 | 0xffff, /* dst_mask */ |
b34976b6 | 1902 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1903 | |
411e1bfb AM |
1904 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1905 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1906 | 16, /* rightshift */ | |
5bd4f169 AM |
1907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1908 | 16, /* bitsize */ | |
b34976b6 | 1909 | FALSE, /* pc_relative */ |
5bd4f169 | 1910 | 0, /* bitpos */ |
f9c6b907 | 1911 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1912 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1913 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1914 | FALSE, /* partial_inplace */ |
d006db6c | 1915 | 0, /* src_mask */ |
411e1bfb | 1916 | 0xffff, /* dst_mask */ |
b34976b6 | 1917 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1918 | |
25f23106 AM |
1919 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1920 | 0, /* rightshift */ | |
1921 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1922 | 0, /* bitsize */ | |
1923 | FALSE, /* pc_relative */ | |
1924 | 0, /* bitpos */ | |
1925 | complain_overflow_dont, /* complain_on_overflow */ | |
1926 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1927 | "R_PPC64_JMP_IREL", /* name */ | |
1928 | FALSE, /* partial_inplace */ | |
1929 | 0, /* src_mask */ | |
1930 | 0, /* dst_mask */ | |
1931 | FALSE), /* pcrel_offset */ | |
1932 | ||
e054468f AM |
1933 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1934 | 0, /* rightshift */ | |
1935 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1936 | 64, /* bitsize */ | |
1937 | FALSE, /* pc_relative */ | |
1938 | 0, /* bitpos */ | |
1939 | complain_overflow_dont, /* complain_on_overflow */ | |
1940 | bfd_elf_generic_reloc, /* special_function */ | |
1941 | "R_PPC64_IRELATIVE", /* name */ | |
1942 | FALSE, /* partial_inplace */ | |
1943 | 0, /* src_mask */ | |
1944 | ONES (64), /* dst_mask */ | |
1945 | FALSE), /* pcrel_offset */ | |
1946 | ||
25f23106 AM |
1947 | /* A 16 bit relative relocation. */ |
1948 | HOWTO (R_PPC64_REL16, /* type */ | |
1949 | 0, /* rightshift */ | |
1950 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1951 | 16, /* bitsize */ | |
1952 | TRUE, /* pc_relative */ | |
1953 | 0, /* bitpos */ | |
1954 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1955 | bfd_elf_generic_reloc, /* special_function */ | |
1956 | "R_PPC64_REL16", /* name */ | |
1957 | FALSE, /* partial_inplace */ | |
1958 | 0, /* src_mask */ | |
1959 | 0xffff, /* dst_mask */ | |
1960 | TRUE), /* pcrel_offset */ | |
1961 | ||
1962 | /* A 16 bit relative relocation without overflow. */ | |
1963 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1964 | 0, /* rightshift */ | |
1965 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1966 | 16, /* bitsize */ | |
1967 | TRUE, /* pc_relative */ | |
1968 | 0, /* bitpos */ | |
1969 | complain_overflow_dont,/* complain_on_overflow */ | |
1970 | bfd_elf_generic_reloc, /* special_function */ | |
1971 | "R_PPC64_REL16_LO", /* name */ | |
1972 | FALSE, /* partial_inplace */ | |
1973 | 0, /* src_mask */ | |
1974 | 0xffff, /* dst_mask */ | |
1975 | TRUE), /* pcrel_offset */ | |
1976 | ||
1977 | /* The high order 16 bits of a relative address. */ | |
1978 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1979 | 16, /* rightshift */ | |
1980 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1981 | 16, /* bitsize */ | |
1982 | TRUE, /* pc_relative */ | |
1983 | 0, /* bitpos */ | |
f9c6b907 | 1984 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1985 | bfd_elf_generic_reloc, /* special_function */ |
1986 | "R_PPC64_REL16_HI", /* name */ | |
1987 | FALSE, /* partial_inplace */ | |
1988 | 0, /* src_mask */ | |
1989 | 0xffff, /* dst_mask */ | |
1990 | TRUE), /* pcrel_offset */ | |
1991 | ||
1992 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1993 | the low 16 bits, treated as a signed number, is negative. */ | |
1994 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1995 | 16, /* rightshift */ | |
1996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1997 | 16, /* bitsize */ | |
1998 | TRUE, /* pc_relative */ | |
1999 | 0, /* bitpos */ | |
f9c6b907 | 2000 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2001 | ppc64_elf_ha_reloc, /* special_function */ |
2002 | "R_PPC64_REL16_HA", /* name */ | |
2003 | FALSE, /* partial_inplace */ | |
2004 | 0, /* src_mask */ | |
2005 | 0xffff, /* dst_mask */ | |
2006 | TRUE), /* pcrel_offset */ | |
2007 | ||
f9c6b907 AM |
2008 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2009 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2010 | 16, /* rightshift */ | |
2011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2012 | 16, /* bitsize */ | |
2013 | FALSE, /* pc_relative */ | |
2014 | 0, /* bitpos */ | |
2015 | complain_overflow_dont, /* complain_on_overflow */ | |
2016 | bfd_elf_generic_reloc, /* special_function */ | |
2017 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2018 | FALSE, /* partial_inplace */ | |
2019 | 0, /* src_mask */ | |
2020 | 0xffff, /* dst_mask */ | |
2021 | FALSE), /* pcrel_offset */ | |
2022 | ||
2023 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2024 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2025 | 16, /* rightshift */ | |
2026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2027 | 16, /* bitsize */ | |
2028 | FALSE, /* pc_relative */ | |
2029 | 0, /* bitpos */ | |
2030 | complain_overflow_dont, /* complain_on_overflow */ | |
2031 | ppc64_elf_ha_reloc, /* special_function */ | |
2032 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2033 | FALSE, /* partial_inplace */ | |
2034 | 0, /* src_mask */ | |
2035 | 0xffff, /* dst_mask */ | |
2036 | FALSE), /* pcrel_offset */ | |
2037 | ||
2038 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2039 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2040 | 16, /* rightshift */ | |
2041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2042 | 16, /* bitsize */ | |
2043 | FALSE, /* pc_relative */ | |
2044 | 0, /* bitpos */ | |
2045 | complain_overflow_dont, /* complain_on_overflow */ | |
2046 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2047 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2048 | FALSE, /* partial_inplace */ | |
2049 | 0, /* src_mask */ | |
2050 | 0xffff, /* dst_mask */ | |
2051 | FALSE), /* pcrel_offset */ | |
2052 | ||
2053 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2054 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2055 | 16, /* rightshift */ | |
2056 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2057 | 16, /* bitsize */ | |
2058 | FALSE, /* pc_relative */ | |
2059 | 0, /* bitpos */ | |
2060 | complain_overflow_dont, /* complain_on_overflow */ | |
2061 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2062 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2063 | FALSE, /* partial_inplace */ | |
2064 | 0, /* src_mask */ | |
2065 | 0xffff, /* dst_mask */ | |
2066 | FALSE), /* pcrel_offset */ | |
2067 | ||
2068 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2069 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2070 | 16, /* rightshift */ | |
2071 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2072 | 16, /* bitsize */ | |
2073 | FALSE, /* pc_relative */ | |
2074 | 0, /* bitpos */ | |
2075 | complain_overflow_dont, /* complain_on_overflow */ | |
2076 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2077 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2078 | FALSE, /* partial_inplace */ | |
2079 | 0, /* src_mask */ | |
2080 | 0xffff, /* dst_mask */ | |
2081 | FALSE), /* pcrel_offset */ | |
2082 | ||
2083 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2084 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2085 | 16, /* rightshift */ | |
2086 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2087 | 16, /* bitsize */ | |
2088 | FALSE, /* pc_relative */ | |
2089 | 0, /* bitpos */ | |
2090 | complain_overflow_dont, /* complain_on_overflow */ | |
2091 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2092 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2093 | FALSE, /* partial_inplace */ | |
2094 | 0, /* src_mask */ | |
2095 | 0xffff, /* dst_mask */ | |
2096 | FALSE), /* pcrel_offset */ | |
2097 | ||
5bd4f169 AM |
2098 | /* GNU extension to record C++ vtable hierarchy. */ |
2099 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2100 | 0, /* rightshift */ | |
2101 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2102 | 0, /* bitsize */ | |
b34976b6 | 2103 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2104 | 0, /* bitpos */ |
2105 | complain_overflow_dont, /* complain_on_overflow */ | |
2106 | NULL, /* special_function */ | |
2107 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2108 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2109 | 0, /* src_mask */ |
2110 | 0, /* dst_mask */ | |
b34976b6 | 2111 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2112 | |
2113 | /* GNU extension to record C++ vtable member usage. */ | |
2114 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2115 | 0, /* rightshift */ | |
2116 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2117 | 0, /* bitsize */ | |
b34976b6 | 2118 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2119 | 0, /* bitpos */ |
2120 | complain_overflow_dont, /* complain_on_overflow */ | |
2121 | NULL, /* special_function */ | |
2122 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2123 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2124 | 0, /* src_mask */ |
2125 | 0, /* dst_mask */ | |
b34976b6 | 2126 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2127 | }; |
2128 | ||
2129 | \f | |
2130 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2131 | be done. */ | |
2132 | ||
2133 | static void | |
4ce794b7 | 2134 | ppc_howto_init (void) |
5bd4f169 AM |
2135 | { |
2136 | unsigned int i, type; | |
2137 | ||
2138 | for (i = 0; | |
2139 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2140 | i++) | |
2141 | { | |
2142 | type = ppc64_elf_howto_raw[i].type; | |
2143 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2144 | / sizeof (ppc64_elf_howto_table[0]))); | |
2145 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2146 | } | |
2147 | } | |
2148 | ||
2149 | static reloc_howto_type * | |
4ce794b7 AM |
2150 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2151 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2152 | { |
411e1bfb | 2153 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2154 | |
2155 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2156 | /* Initialize howto table if needed. */ | |
2157 | ppc_howto_init (); | |
2158 | ||
4ce794b7 | 2159 | switch (code) |
5bd4f169 AM |
2160 | { |
2161 | default: | |
4ce794b7 | 2162 | return NULL; |
5bd4f169 | 2163 | |
411e1bfb AM |
2164 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2165 | break; | |
2166 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2167 | break; | |
2168 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2169 | break; | |
2170 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2171 | break; | |
2172 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2173 | break; | |
2174 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2175 | break; | |
f9c6b907 AM |
2176 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2177 | break; | |
411e1bfb | 2178 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2179 | break; |
f9c6b907 AM |
2180 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2181 | break; | |
411e1bfb | 2182 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2183 | break; |
411e1bfb | 2184 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2185 | break; |
411e1bfb | 2186 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2187 | break; |
411e1bfb | 2188 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2189 | break; |
411e1bfb | 2190 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2191 | break; |
411e1bfb | 2192 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2193 | break; |
411e1bfb | 2194 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2195 | break; |
411e1bfb | 2196 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2197 | break; |
411e1bfb | 2198 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2199 | break; |
411e1bfb | 2200 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2201 | break; |
411e1bfb | 2202 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2203 | break; |
411e1bfb | 2204 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2205 | break; |
411e1bfb | 2206 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2207 | break; |
411e1bfb | 2208 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2209 | break; |
411e1bfb | 2210 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2211 | break; |
411e1bfb | 2212 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2213 | break; |
411e1bfb | 2214 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2215 | break; |
411e1bfb | 2216 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2217 | break; |
411e1bfb | 2218 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2219 | break; |
411e1bfb | 2220 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2221 | break; |
411e1bfb | 2222 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2223 | break; |
411e1bfb | 2224 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2225 | break; |
411e1bfb | 2226 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2227 | break; |
411e1bfb | 2228 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2229 | break; |
411e1bfb | 2230 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2231 | break; |
411e1bfb | 2232 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2233 | break; |
411e1bfb | 2234 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2235 | break; |
411e1bfb | 2236 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2237 | break; |
411e1bfb | 2238 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2239 | break; |
411e1bfb | 2240 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2241 | break; |
411e1bfb | 2242 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2243 | break; |
411e1bfb | 2244 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2245 | break; |
411e1bfb | 2246 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2247 | break; |
411e1bfb | 2248 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2249 | break; |
411e1bfb | 2250 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2251 | break; |
411e1bfb | 2252 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2253 | break; |
411e1bfb | 2254 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2255 | break; |
411e1bfb | 2256 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2257 | break; |
411e1bfb | 2258 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2259 | break; |
411e1bfb | 2260 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2261 | break; |
411e1bfb | 2262 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2263 | break; |
411e1bfb | 2264 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2265 | break; |
411e1bfb | 2266 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2267 | break; |
411e1bfb | 2268 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2269 | break; |
411e1bfb | 2270 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2287 | break; |
727fc41e AM |
2288 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2289 | break; | |
2290 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2291 | break; | |
411e1bfb | 2292 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2299 | break; |
f9c6b907 AM |
2300 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2301 | break; | |
411e1bfb | 2302 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2303 | break; |
f9c6b907 AM |
2304 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2305 | break; | |
411e1bfb | 2306 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2307 | break; |
411e1bfb AM |
2308 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2309 | break; | |
2310 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2311 | break; | |
2312 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2313 | break; | |
f9c6b907 AM |
2314 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2315 | break; | |
411e1bfb AM |
2316 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2317 | break; | |
f9c6b907 AM |
2318 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2319 | break; | |
411e1bfb AM |
2320 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2321 | break; | |
2322 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2323 | break; | |
2324 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2325 | break; | |
2326 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2327 | break; | |
2328 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2329 | break; | |
2330 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2331 | break; | |
2332 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2333 | break; | |
2334 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2335 | break; | |
2336 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2337 | break; | |
2338 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2339 | break; | |
2340 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2341 | break; | |
2342 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2343 | break; | |
2344 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2345 | break; | |
2346 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2347 | break; | |
2348 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2349 | break; | |
2350 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2351 | break; | |
2352 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2353 | break; | |
2354 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2355 | break; | |
2356 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2357 | break; | |
2358 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2359 | break; | |
2360 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2361 | break; | |
2362 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2363 | break; | |
2364 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2365 | break; | |
2366 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2367 | break; | |
2368 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2369 | break; | |
2370 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2371 | break; | |
2372 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2373 | break; | |
2374 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2375 | break; | |
2376 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2377 | break; | |
25f23106 AM |
2378 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2379 | break; | |
2380 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2381 | break; | |
2382 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2383 | break; | |
2384 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2385 | break; | |
411e1bfb AM |
2386 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2387 | break; | |
2388 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2389 | break; |
2390 | } | |
2391 | ||
4ce794b7 | 2392 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2393 | }; |
2394 | ||
157090f7 AM |
2395 | static reloc_howto_type * |
2396 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2397 | const char *r_name) | |
2398 | { | |
2399 | unsigned int i; | |
2400 | ||
2401 | for (i = 0; | |
2402 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2403 | i++) | |
2404 | if (ppc64_elf_howto_raw[i].name != NULL | |
2405 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2406 | return &ppc64_elf_howto_raw[i]; | |
2407 | ||
2408 | return NULL; | |
2409 | } | |
2410 | ||
5bd4f169 AM |
2411 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2412 | ||
2413 | static void | |
4ce794b7 AM |
2414 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2415 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2416 | { |
65f38f15 AM |
2417 | unsigned int type; |
2418 | ||
ef60b7ff | 2419 | /* Initialize howto table if needed. */ |
5bd4f169 | 2420 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2421 | ppc_howto_init (); |
2422 | ||
65f38f15 | 2423 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2424 | if (type >= (sizeof (ppc64_elf_howto_table) |
2425 | / sizeof (ppc64_elf_howto_table[0]))) | |
2426 | { | |
2427 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2428 | abfd, (int) type); |
2429 | type = R_PPC64_NONE; | |
d0fb9a8d | 2430 | } |
65f38f15 | 2431 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2432 | } |
2433 | ||
04c9666a | 2434 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2435 | |
2436 | static bfd_reloc_status_type | |
4ce794b7 AM |
2437 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2438 | void *data, asection *input_section, | |
2439 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2440 | { |
805fc799 AM |
2441 | /* If this is a relocatable link (output_bfd test tells us), just |
2442 | call the generic function. Any adjustment will be done at final | |
2443 | link time. */ | |
2444 | if (output_bfd != NULL) | |
cedb70c5 | 2445 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2446 | input_section, output_bfd, error_message); |
2447 | ||
2448 | /* Adjust the addend for sign extension of the low 16 bits. | |
2449 | We won't actually be using the low 16 bits, so trashing them | |
2450 | doesn't matter. */ | |
2451 | reloc_entry->addend += 0x8000; | |
2452 | return bfd_reloc_continue; | |
2453 | } | |
5bd4f169 | 2454 | |
2441e016 AM |
2455 | static bfd_reloc_status_type |
2456 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2457 | void *data, asection *input_section, | |
2458 | bfd *output_bfd, char **error_message) | |
2459 | { | |
2460 | if (output_bfd != NULL) | |
2461 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2462 | input_section, output_bfd, error_message); | |
2463 | ||
699733f6 AM |
2464 | if (strcmp (symbol->section->name, ".opd") == 0 |
2465 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2466 | { |
2467 | bfd_vma dest = opd_entry_value (symbol->section, | |
2468 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2469 | NULL, NULL, FALSE); |
2441e016 AM |
2470 | if (dest != (bfd_vma) -1) |
2471 | reloc_entry->addend = dest - (symbol->value | |
2472 | + symbol->section->output_section->vma | |
2473 | + symbol->section->output_offset); | |
2474 | } | |
2475 | return bfd_reloc_continue; | |
2476 | } | |
2477 | ||
805fc799 | 2478 | static bfd_reloc_status_type |
4ce794b7 AM |
2479 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2480 | void *data, asection *input_section, | |
2481 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2482 | { |
2483 | long insn; | |
04c9666a | 2484 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2485 | bfd_size_type octets; |
794e51c0 AM |
2486 | /* Assume 'at' branch hints. */ |
2487 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2488 | |
2489 | /* If this is a relocatable link (output_bfd test tells us), just | |
2490 | call the generic function. Any adjustment will be done at final | |
2491 | link time. */ | |
5bd4f169 | 2492 | if (output_bfd != NULL) |
cedb70c5 | 2493 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2494 | input_section, output_bfd, error_message); |
2495 | ||
2496 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2497 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2498 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2499 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2500 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2501 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2502 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2503 | |
794e51c0 | 2504 | if (is_isa_v2) |
5bd4f169 | 2505 | { |
805fc799 AM |
2506 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2507 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2508 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2509 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2510 | insn |= 0x02 << 21; | |
2511 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2512 | insn |= 0x08 << 21; | |
2513 | else | |
2441e016 | 2514 | goto out; |
5bd4f169 | 2515 | } |
805fc799 AM |
2516 | else |
2517 | { | |
2518 | bfd_vma target = 0; | |
2519 | bfd_vma from; | |
5bd4f169 | 2520 | |
805fc799 AM |
2521 | if (!bfd_is_com_section (symbol->section)) |
2522 | target = symbol->value; | |
2523 | target += symbol->section->output_section->vma; | |
2524 | target += symbol->section->output_offset; | |
2525 | target += reloc_entry->addend; | |
5bd4f169 | 2526 | |
805fc799 AM |
2527 | from = (reloc_entry->address |
2528 | + input_section->output_offset | |
2529 | + input_section->output_section->vma); | |
5bd4f169 | 2530 | |
805fc799 AM |
2531 | /* Invert 'y' bit if not the default. */ |
2532 | if ((bfd_signed_vma) (target - from) < 0) | |
2533 | insn ^= 0x01 << 21; | |
2534 | } | |
4ce794b7 | 2535 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2536 | out: |
2537 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2538 | input_section, output_bfd, error_message); | |
805fc799 | 2539 | } |
5bd4f169 | 2540 | |
805fc799 | 2541 | static bfd_reloc_status_type |
4ce794b7 AM |
2542 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2543 | void *data, asection *input_section, | |
2544 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2545 | { |
2546 | /* If this is a relocatable link (output_bfd test tells us), just | |
2547 | call the generic function. Any adjustment will be done at final | |
2548 | link time. */ | |
2549 | if (output_bfd != NULL) | |
cedb70c5 | 2550 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2551 | input_section, output_bfd, error_message); |
5bd4f169 | 2552 | |
805fc799 AM |
2553 | /* Subtract the symbol section base address. */ |
2554 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2555 | return bfd_reloc_continue; |
2556 | } | |
2557 | ||
805fc799 | 2558 | static bfd_reloc_status_type |
4ce794b7 AM |
2559 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2560 | void *data, asection *input_section, | |
2561 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2562 | { |
2563 | /* If this is a relocatable link (output_bfd test tells us), just | |
2564 | call the generic function. Any adjustment will be done at final | |
2565 | link time. */ | |
2566 | if (output_bfd != NULL) | |
cedb70c5 | 2567 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2568 | input_section, output_bfd, error_message); |
2569 | ||
2570 | /* Subtract the symbol section base address. */ | |
2571 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2572 | ||
2573 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2574 | reloc_entry->addend += 0x8000; | |
2575 | return bfd_reloc_continue; | |
2576 | } | |
2577 | ||
2578 | static bfd_reloc_status_type | |
4ce794b7 AM |
2579 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2580 | void *data, asection *input_section, | |
2581 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2582 | { |
2583 | bfd_vma TOCstart; | |
2584 | ||
2585 | /* If this is a relocatable link (output_bfd test tells us), just | |
2586 | call the generic function. Any adjustment will be done at final | |
2587 | link time. */ | |
2588 | if (output_bfd != NULL) | |
cedb70c5 | 2589 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2590 | input_section, output_bfd, error_message); |
2591 | ||
2592 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2593 | if (TOCstart == 0) | |
1c865ab2 | 2594 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2595 | |
2596 | /* Subtract the TOC base address. */ | |
2597 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2598 | return bfd_reloc_continue; | |
2599 | } | |
2600 | ||
2601 | static bfd_reloc_status_type | |
4ce794b7 AM |
2602 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2603 | void *data, asection *input_section, | |
2604 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2605 | { |
2606 | bfd_vma TOCstart; | |
2607 | ||
2608 | /* If this is a relocatable link (output_bfd test tells us), just | |
2609 | call the generic function. Any adjustment will be done at final | |
2610 | link time. */ | |
2611 | if (output_bfd != NULL) | |
cedb70c5 | 2612 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2613 | input_section, output_bfd, error_message); |
2614 | ||
2615 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2616 | if (TOCstart == 0) | |
1c865ab2 | 2617 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2618 | |
2619 | /* Subtract the TOC base address. */ | |
2620 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2621 | ||
2622 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2623 | reloc_entry->addend += 0x8000; | |
2624 | return bfd_reloc_continue; | |
2625 | } | |
2626 | ||
2627 | static bfd_reloc_status_type | |
4ce794b7 AM |
2628 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2629 | void *data, asection *input_section, | |
2630 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2631 | { |
2632 | bfd_vma TOCstart; | |
2633 | bfd_size_type octets; | |
2634 | ||
2635 | /* If this is a relocatable link (output_bfd test tells us), just | |
2636 | call the generic function. Any adjustment will be done at final | |
2637 | link time. */ | |
2638 | if (output_bfd != NULL) | |
cedb70c5 | 2639 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2640 | input_section, output_bfd, error_message); |
2641 | ||
2642 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2643 | if (TOCstart == 0) | |
1c865ab2 | 2644 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2645 | |
2646 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2647 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2648 | return bfd_reloc_ok; | |
2649 | } | |
2650 | ||
2651 | static bfd_reloc_status_type | |
4ce794b7 AM |
2652 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2653 | void *data, asection *input_section, | |
2654 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2655 | { |
2656 | /* If this is a relocatable link (output_bfd test tells us), just | |
2657 | call the generic function. Any adjustment will be done at final | |
2658 | link time. */ | |
2659 | if (output_bfd != NULL) | |
cedb70c5 | 2660 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2661 | input_section, output_bfd, error_message); |
2662 | ||
2663 | if (error_message != NULL) | |
2664 | { | |
2665 | static char buf[60]; | |
2666 | sprintf (buf, "generic linker can't handle %s", | |
2667 | reloc_entry->howto->name); | |
2668 | *error_message = buf; | |
2669 | } | |
2670 | return bfd_reloc_dangerous; | |
2671 | } | |
2672 | ||
927be08e AM |
2673 | /* Track GOT entries needed for a given symbol. We might need more |
2674 | than one got entry per symbol. */ | |
2675 | struct got_entry | |
2676 | { | |
2677 | struct got_entry *next; | |
2678 | ||
2679 | /* The symbol addend that we'll be placing in the GOT. */ | |
2680 | bfd_vma addend; | |
2681 | ||
2682 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2683 | symbol referenced from different input files. This is to support | |
2684 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2685 | from one input file to another. After partitioning into TOC groups | |
2686 | we merge entries within the group. | |
2687 | ||
2688 | Point to the BFD owning this GOT entry. */ | |
2689 | bfd *owner; | |
2690 | ||
2691 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2692 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2693 | unsigned char tls_type; |
927be08e AM |
2694 | |
2695 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2696 | unsigned char is_indirect; |
927be08e AM |
2697 | |
2698 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2699 | union | |
2700 | { | |
2701 | bfd_signed_vma refcount; | |
2702 | bfd_vma offset; | |
2703 | struct got_entry *ent; | |
2704 | } got; | |
2705 | }; | |
2706 | ||
2707 | /* The same for PLT. */ | |
2708 | struct plt_entry | |
2709 | { | |
2710 | struct plt_entry *next; | |
2711 | ||
2712 | bfd_vma addend; | |
2713 | ||
2714 | union | |
2715 | { | |
2716 | bfd_signed_vma refcount; | |
2717 | bfd_vma offset; | |
2718 | } plt; | |
2719 | }; | |
2720 | ||
e717da7e AM |
2721 | struct ppc64_elf_obj_tdata |
2722 | { | |
2723 | struct elf_obj_tdata elf; | |
2724 | ||
2725 | /* Shortcuts to dynamic linker sections. */ | |
2726 | asection *got; | |
2727 | asection *relgot; | |
2728 | ||
b3fac117 AM |
2729 | /* Used during garbage collection. We attach global symbols defined |
2730 | on removed .opd entries to this section so that the sym is removed. */ | |
2731 | asection *deleted_section; | |
81688140 | 2732 | |
927be08e | 2733 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2734 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2735 | struct got_entry tlsld_got; |
8860955f | 2736 | |
729eabd5 AM |
2737 | union { |
2738 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2739 | Elf_Internal_Rela *relocs; | |
2740 | ||
2741 | /* Section contents. */ | |
2742 | bfd_byte *contents; | |
2743 | } opd; | |
d77c8a4b AM |
2744 | |
2745 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2746 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2747 | unsigned int has_small_toc_reloc : 1; |
2748 | ||
560c8763 AM |
2749 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2750 | instruction not one we handle. */ | |
2751 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2752 | }; |
2753 | ||
2754 | #define ppc64_elf_tdata(bfd) \ | |
2755 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2756 | ||
2757 | #define ppc64_tlsld_got(bfd) \ | |
2758 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2759 | ||
0c8d6e5c AM |
2760 | #define is_ppc64_elf(bfd) \ |
2761 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2762 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2763 | |
e717da7e AM |
2764 | /* Override the generic function because we store some extras. */ |
2765 | ||
2766 | static bfd_boolean | |
2767 | ppc64_elf_mkobject (bfd *abfd) | |
2768 | { | |
0ffa91dd | 2769 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2770 | PPC64_ELF_DATA); |
e717da7e AM |
2771 | } |
2772 | ||
feee612b AM |
2773 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2774 | default is 32 bit. */ | |
2775 | ||
b34976b6 | 2776 | static bfd_boolean |
4ce794b7 | 2777 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2778 | { |
2779 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2780 | { | |
2781 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2782 | ||
2783 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2784 | { | |
2785 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2786 | abfd->arch_info = abfd->arch_info->next; | |
2787 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2788 | } | |
2789 | } | |
b34976b6 | 2790 | return TRUE; |
feee612b AM |
2791 | } |
2792 | ||
d37c89e5 AM |
2793 | /* Support for core dump NOTE sections. */ |
2794 | ||
2795 | static bfd_boolean | |
2796 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2797 | { | |
eea6121a | 2798 | size_t offset, size; |
d37c89e5 AM |
2799 | |
2800 | if (note->descsz != 504) | |
2801 | return FALSE; | |
2802 | ||
2803 | /* pr_cursig */ | |
228e534f | 2804 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2805 | |
2806 | /* pr_pid */ | |
228e534f | 2807 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2808 | |
2809 | /* pr_reg */ | |
2810 | offset = 112; | |
eea6121a | 2811 | size = 384; |
d37c89e5 AM |
2812 | |
2813 | /* Make a ".reg/999" section. */ | |
2814 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2815 | size, note->descpos + offset); |
d37c89e5 AM |
2816 | } |
2817 | ||
2818 | static bfd_boolean | |
2819 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2820 | { | |
2821 | if (note->descsz != 136) | |
2822 | return FALSE; | |
2823 | ||
228e534f | 2824 | elf_tdata (abfd)->core->pid |
bc989cdc | 2825 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2826 | elf_tdata (abfd)->core->program |
d37c89e5 | 2827 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2828 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2829 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2830 | ||
2831 | return TRUE; | |
2832 | } | |
2833 | ||
183e98be AM |
2834 | static char * |
2835 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2836 | ...) | |
2837 | { | |
2838 | switch (note_type) | |
2839 | { | |
2840 | default: | |
2841 | return NULL; | |
2842 | ||
2843 | case NT_PRPSINFO: | |
2844 | { | |
2845 | char data[136]; | |
2846 | va_list ap; | |
2847 | ||
2848 | va_start (ap, note_type); | |
75cd47ed | 2849 | memset (data, 0, sizeof (data)); |
183e98be AM |
2850 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2851 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2852 | va_end (ap); | |
2853 | return elfcore_write_note (abfd, buf, bufsiz, | |
2854 | "CORE", note_type, data, sizeof (data)); | |
2855 | } | |
2856 | ||
2857 | case NT_PRSTATUS: | |
2858 | { | |
2859 | char data[504]; | |
2860 | va_list ap; | |
2861 | long pid; | |
2862 | int cursig; | |
2863 | const void *greg; | |
2864 | ||
2865 | va_start (ap, note_type); | |
2866 | memset (data, 0, 112); | |
2867 | pid = va_arg (ap, long); | |
2868 | bfd_put_32 (abfd, pid, data + 32); | |
2869 | cursig = va_arg (ap, int); | |
2870 | bfd_put_16 (abfd, cursig, data + 12); | |
2871 | greg = va_arg (ap, const void *); | |
2872 | memcpy (data + 112, greg, 384); | |
2873 | memset (data + 496, 0, 8); | |
2874 | va_end (ap); | |
2875 | return elfcore_write_note (abfd, buf, bufsiz, | |
2876 | "CORE", note_type, data, sizeof (data)); | |
2877 | } | |
2878 | } | |
2879 | } | |
2880 | ||
5d35169e AM |
2881 | /* Add extra PPC sections. */ |
2882 | ||
b35d266b | 2883 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2884 | { |
0112cd26 NC |
2885 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2886 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2887 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2888 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2889 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2890 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2891 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2892 | }; |
2893 | ||
7c8fe5c4 AM |
2894 | enum _ppc64_sec_type { |
2895 | sec_normal = 0, | |
2896 | sec_opd = 1, | |
2897 | sec_toc = 2 | |
2898 | }; | |
2899 | ||
f0abc2a1 AM |
2900 | struct _ppc64_elf_section_data |
2901 | { | |
2902 | struct bfd_elf_section_data elf; | |
411e1bfb | 2903 | |
f0abc2a1 AM |
2904 | union |
2905 | { | |
74f0fb50 AM |
2906 | /* An array with one entry for each opd function descriptor. */ |
2907 | struct _opd_sec_data | |
2908 | { | |
2909 | /* Points to the function code section for local opd entries. */ | |
2910 | asection **func_sec; | |
2911 | ||
2912 | /* After editing .opd, adjust references to opd local syms. */ | |
2913 | long *adjust; | |
2914 | } opd; | |
7c8fe5c4 | 2915 | |
3a71aa26 AM |
2916 | /* An array for toc sections, indexed by offset/8. */ |
2917 | struct _toc_sec_data | |
2918 | { | |
2919 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2920 | unsigned *symndx; | |
2921 | ||
2922 | /* And the relocation addend. */ | |
2923 | bfd_vma *add; | |
2924 | } toc; | |
7c8fe5c4 AM |
2925 | } u; |
2926 | ||
2927 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2928 | |
7c8fe5c4 AM |
2929 | /* Flag set when small branches are detected. Used to |
2930 | select suitable defaults for the stub group size. */ | |
2931 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2932 | }; |
2933 | ||
2934 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2935 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2936 | |
2937 | static bfd_boolean | |
4ce794b7 | 2938 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2939 | { |
f592407e AM |
2940 | if (!sec->used_by_bfd) |
2941 | { | |
2942 | struct _ppc64_elf_section_data *sdata; | |
2943 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2944 | |
f592407e AM |
2945 | sdata = bfd_zalloc (abfd, amt); |
2946 | if (sdata == NULL) | |
2947 | return FALSE; | |
2948 | sec->used_by_bfd = sdata; | |
2949 | } | |
f0abc2a1 AM |
2950 | |
2951 | return _bfd_elf_new_section_hook (abfd, sec); | |
2952 | } | |
4025353c | 2953 | |
74f0fb50 | 2954 | static struct _opd_sec_data * |
4025353c AM |
2955 | get_opd_info (asection * sec) |
2956 | { | |
2957 | if (sec != NULL | |
2958 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2959 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2960 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2961 | return NULL; |
2962 | } | |
ee67d69a AM |
2963 | |
2964 | static inline int | |
2965 | abiversion (bfd *abfd) | |
2966 | { | |
2967 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
2968 | } | |
2969 | ||
2970 | static inline void | |
2971 | set_abiversion (bfd *abfd, int ver) | |
2972 | { | |
2973 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
2974 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
2975 | } | |
90e3cdf2 JJ |
2976 | \f |
2977 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2978 | static bfd_boolean synthetic_relocatable; |
2979 | ||
699733f6 | 2980 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2981 | |
2982 | static int | |
2983 | compare_symbols (const void *ap, const void *bp) | |
2984 | { | |
2985 | const asymbol *a = * (const asymbol **) ap; | |
2986 | const asymbol *b = * (const asymbol **) bp; | |
2987 | ||
699733f6 AM |
2988 | /* Section symbols first. */ |
2989 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2990 | return -1; |
699733f6 | 2991 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2992 | return 1; |
2993 | ||
699733f6 | 2994 | /* then .opd symbols. */ |
ffcfec52 AM |
2995 | if (strcmp (a->section->name, ".opd") == 0 |
2996 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2997 | return -1; |
ffcfec52 AM |
2998 | if (strcmp (a->section->name, ".opd") != 0 |
2999 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3000 | return 1; |
3001 | ||
699733f6 | 3002 | /* then other code symbols. */ |
90e3cdf2 JJ |
3003 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3004 | == (SEC_CODE | SEC_ALLOC) | |
3005 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3006 | != (SEC_CODE | SEC_ALLOC)) | |
3007 | return -1; | |
3008 | ||
3009 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3010 | != (SEC_CODE | SEC_ALLOC) | |
3011 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3012 | == (SEC_CODE | SEC_ALLOC)) | |
3013 | return 1; | |
3014 | ||
3015 | if (synthetic_relocatable) | |
3016 | { | |
3017 | if (a->section->id < b->section->id) | |
3018 | return -1; | |
3019 | ||
3020 | if (a->section->id > b->section->id) | |
3021 | return 1; | |
3022 | } | |
3023 | ||
3024 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3025 | return -1; | |
3026 | ||
3027 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3028 | return 1; | |
3029 | ||
4d35a0aa AM |
3030 | /* For syms with the same value, prefer strong dynamic global function |
3031 | syms over other syms. */ | |
3032 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3033 | return -1; | |
3034 | ||
3035 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3036 | return 1; | |
3037 | ||
3038 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3039 | return -1; | |
3040 | ||
3041 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3042 | return 1; | |
3043 | ||
3044 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3045 | return -1; | |
3046 | ||
3047 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3048 | return 1; | |
3049 | ||
3050 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3051 | return -1; | |
3052 | ||
3053 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3054 | return 1; | |
3055 | ||
90e3cdf2 JJ |
3056 | return 0; |
3057 | } | |
3058 | ||
699733f6 | 3059 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3060 | |
699733f6 AM |
3061 | static asymbol * |
3062 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 3063 | { |
699733f6 | 3064 | long mid; |
90e3cdf2 | 3065 | |
699733f6 AM |
3066 | if (id == -1) |
3067 | { | |
3068 | while (lo < hi) | |
3069 | { | |
3070 | mid = (lo + hi) >> 1; | |
3071 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3072 | lo = mid + 1; | |
3073 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3074 | hi = mid; | |
3075 | else | |
3076 | return syms[mid]; | |
3077 | } | |
3078 | } | |
3079 | else | |
3080 | { | |
3081 | while (lo < hi) | |
3082 | { | |
3083 | mid = (lo + hi) >> 1; | |
3084 | if (syms[mid]->section->id < id) | |
3085 | lo = mid + 1; | |
3086 | else if (syms[mid]->section->id > id) | |
3087 | hi = mid; | |
3088 | else if (syms[mid]->value < value) | |
3089 | lo = mid + 1; | |
3090 | else if (syms[mid]->value > value) | |
3091 | hi = mid; | |
3092 | else | |
3093 | return syms[mid]; | |
3094 | } | |
3095 | } | |
3096 | return NULL; | |
90e3cdf2 JJ |
3097 | } |
3098 | ||
468392fb AM |
3099 | static bfd_boolean |
3100 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3101 | { | |
3102 | bfd_vma vma = *(bfd_vma *) ptr; | |
3103 | return ((section->flags & SEC_ALLOC) != 0 | |
3104 | && section->vma <= vma | |
3105 | && vma < section->vma + section->size); | |
3106 | } | |
3107 | ||
699733f6 | 3108 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 3109 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
3110 | |
3111 | static long | |
a7535cf3 AM |
3112 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3113 | long static_count, asymbol **static_syms, | |
3114 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3115 | asymbol **ret) |
90e3cdf2 JJ |
3116 | { |
3117 | asymbol *s; | |
699733f6 AM |
3118 | long i; |
3119 | long count; | |
90e3cdf2 | 3120 | char *names; |
a7535cf3 | 3121 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3122 | asection *opd = NULL; |
90e3cdf2 | 3123 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3124 | asymbol **syms; |
ee67d69a | 3125 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3126 | |
3127 | *ret = NULL; | |
3128 | ||
ee67d69a AM |
3129 | if (abi < 2) |
3130 | { | |
3131 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3132 | if (opd == NULL && abi == 1) | |
3133 | return 0; | |
3134 | } | |
90e3cdf2 | 3135 | |
a7535cf3 | 3136 | symcount = static_count; |
c9727e01 | 3137 | if (!relocatable) |
a7535cf3 | 3138 | symcount += dyn_count; |
90e3cdf2 | 3139 | if (symcount == 0) |
c9727e01 | 3140 | return 0; |
90e3cdf2 | 3141 | |
a7535cf3 AM |
3142 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3143 | if (syms == NULL) | |
7356fed5 | 3144 | return -1; |
a7535cf3 AM |
3145 | |
3146 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3147 | { | |
3148 | /* Use both symbol tables. */ | |
3149 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3150 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3151 | } | |
3152 | else if (!relocatable && static_count == 0) | |
3153 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3154 | else | |
3155 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3156 | ||
90e3cdf2 | 3157 | synthetic_relocatable = relocatable; |
595da8c5 | 3158 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3159 | |
c9727e01 AM |
3160 | if (!relocatable && symcount > 1) |
3161 | { | |
3162 | long j; | |
3163 | /* Trim duplicate syms, since we may have merged the normal and | |
3164 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3165 | different values, so trim any with the same value. */ |
c9727e01 AM |
3166 | for (i = 1, j = 1; i < symcount; ++i) |
3167 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3168 | != syms[i]->value + syms[i]->section->vma) | |
3169 | syms[j++] = syms[i]; | |
3170 | symcount = j; | |
3171 | } | |
3172 | ||
699733f6 | 3173 | i = 0; |
ffcfec52 | 3174 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3175 | ++i; |
3176 | codesecsym = i; | |
90e3cdf2 | 3177 | |
699733f6 AM |
3178 | for (; i < symcount; ++i) |
3179 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3180 | != (SEC_CODE | SEC_ALLOC)) | |
3181 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3182 | break; | |
3183 | codesecsymend = i; | |
90e3cdf2 | 3184 | |
699733f6 AM |
3185 | for (; i < symcount; ++i) |
3186 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3187 | break; | |
3188 | secsymend = i; | |
90e3cdf2 | 3189 | |
699733f6 | 3190 | for (; i < symcount; ++i) |
ffcfec52 | 3191 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3192 | break; |
3193 | opdsymend = i; | |
90e3cdf2 | 3194 | |
699733f6 AM |
3195 | for (; i < symcount; ++i) |
3196 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3197 | != (SEC_CODE | SEC_ALLOC)) | |
3198 | break; | |
3199 | symcount = i; | |
3200 | ||
c9727e01 | 3201 | count = 0; |
90e3cdf2 | 3202 | |
699733f6 | 3203 | if (relocatable) |
90e3cdf2 | 3204 | { |
699733f6 AM |
3205 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3206 | arelent *r; | |
3207 | size_t size; | |
3208 | long relcount; | |
90e3cdf2 | 3209 | |
468392fb AM |
3210 | if (opdsymend == secsymend) |
3211 | goto done; | |
3212 | ||
699733f6 | 3213 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3214 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3215 | if (relcount == 0) |
c9727e01 | 3216 | goto done; |
90e3cdf2 | 3217 | |
7356fed5 AM |
3218 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3219 | { | |
3220 | count = -1; | |
3221 | goto done; | |
3222 | } | |
3223 | ||
699733f6 | 3224 | size = 0; |
595da8c5 | 3225 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3226 | { |
3227 | asymbol *sym; | |
90e3cdf2 | 3228 | |
595da8c5 | 3229 | while (r < opd->relocation + relcount |
699733f6 AM |
3230 | && r->address < syms[i]->value + opd->vma) |
3231 | ++r; | |
90e3cdf2 | 3232 | |
595da8c5 | 3233 | if (r == opd->relocation + relcount) |
699733f6 | 3234 | break; |
90e3cdf2 | 3235 | |
699733f6 AM |
3236 | if (r->address != syms[i]->value + opd->vma) |
3237 | continue; | |
90e3cdf2 | 3238 | |
699733f6 AM |
3239 | if (r->howto->type != R_PPC64_ADDR64) |
3240 | continue; | |
90e3cdf2 | 3241 | |
699733f6 AM |
3242 | sym = *r->sym_ptr_ptr; |
3243 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3244 | sym->section->id, sym->value + r->addend)) | |
3245 | { | |
3246 | ++count; | |
3247 | size += sizeof (asymbol); | |
3248 | size += strlen (syms[i]->name) + 2; | |
3249 | } | |
3250 | } | |
90e3cdf2 | 3251 | |
699733f6 AM |
3252 | s = *ret = bfd_malloc (size); |
3253 | if (s == NULL) | |
3254 | { | |
7356fed5 | 3255 | count = -1; |
c9727e01 | 3256 | goto done; |
699733f6 | 3257 | } |
90e3cdf2 | 3258 | |
699733f6 | 3259 | names = (char *) (s + count); |
90e3cdf2 | 3260 | |
595da8c5 | 3261 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3262 | { |
699733f6 | 3263 | asymbol *sym; |
90e3cdf2 | 3264 | |
595da8c5 | 3265 | while (r < opd->relocation + relcount |
699733f6 AM |
3266 | && r->address < syms[i]->value + opd->vma) |
3267 | ++r; | |
90e3cdf2 | 3268 | |
595da8c5 | 3269 | if (r == opd->relocation + relcount) |
699733f6 AM |
3270 | break; |
3271 | ||
3272 | if (r->address != syms[i]->value + opd->vma) | |
3273 | continue; | |
3274 | ||
3275 | if (r->howto->type != R_PPC64_ADDR64) | |
3276 | continue; | |
90e3cdf2 | 3277 | |
699733f6 AM |
3278 | sym = *r->sym_ptr_ptr; |
3279 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3280 | sym->section->id, sym->value + r->addend)) | |
3281 | { | |
3282 | size_t len; | |
3283 | ||
3284 | *s = *syms[i]; | |
6ba2a415 | 3285 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3286 | s->section = sym->section; |
3287 | s->value = sym->value + r->addend; | |
3288 | s->name = names; | |
3289 | *names++ = '.'; | |
3290 | len = strlen (syms[i]->name); | |
3291 | memcpy (names, syms[i]->name, len + 1); | |
3292 | names += len + 1; | |
6f610d07 UW |
3293 | /* Have udata.p point back to the original symbol this |
3294 | synthetic symbol was derived from. */ | |
3295 | s->udata.p = syms[i]; | |
699733f6 AM |
3296 | s++; |
3297 | } | |
3298 | } | |
3299 | } | |
3300 | else | |
90e3cdf2 | 3301 | { |
468392fb | 3302 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3303 | bfd_byte *contents = NULL; |
699733f6 | 3304 | size_t size; |
468392fb AM |
3305 | long plt_count = 0; |
3306 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3307 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3308 | arelent *p; | |
90e3cdf2 | 3309 | |
ee67d69a | 3310 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3311 | { |
ee67d69a | 3312 | free_contents_and_exit: |
699733f6 | 3313 | if (contents) |
ee67d69a | 3314 | free (contents); |
7356fed5 | 3315 | count = -1; |
c9727e01 | 3316 | goto done; |
699733f6 | 3317 | } |
90e3cdf2 | 3318 | |
699733f6 AM |
3319 | size = 0; |
3320 | for (i = secsymend; i < opdsymend; ++i) | |
3321 | { | |
3322 | bfd_vma ent; | |
90e3cdf2 | 3323 | |
5ef11c02 AM |
3324 | /* Ignore bogus symbols. */ |
3325 | if (syms[i]->value > opd->size - 8) | |
3326 | continue; | |
3327 | ||
699733f6 AM |
3328 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3329 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3330 | { | |
3331 | ++count; | |
3332 | size += sizeof (asymbol); | |
3333 | size += strlen (syms[i]->name) + 2; | |
3334 | } | |
3335 | } | |
90e3cdf2 | 3336 | |
468392fb | 3337 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3338 | if (dyn_count != 0 |
3339 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3340 | { |
3341 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3342 | size_t extdynsize; | |
3343 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3344 | ||
3345 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3346 | goto free_contents_and_exit; | |
3347 | ||
3348 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3349 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3350 | ||
3351 | extdyn = dynbuf; | |
3352 | extdynend = extdyn + dynamic->size; | |
3353 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3354 | { | |
3355 | Elf_Internal_Dyn dyn; | |
3356 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3357 | ||
3358 | if (dyn.d_tag == DT_NULL) | |
3359 | break; | |
3360 | ||
3361 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3362 | { | |
b9e5796b AM |
3363 | /* The first glink stub starts at offset 32; see |
3364 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3365 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3366 | /* The .glink section usually does not survive the final |
3367 | link; search for the section (usually .text) where the | |
3368 | glink stubs now reside. */ | |
3369 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3370 | &glink_vma); | |
3371 | break; | |
3372 | } | |
3373 | } | |
3374 | ||
3375 | free (dynbuf); | |
3376 | } | |
3377 | ||
3378 | if (glink != NULL) | |
3379 | { | |
3380 | /* Determine __glink trampoline by reading the relative branch | |
3381 | from the first glink stub. */ | |
3382 | bfd_byte buf[4]; | |
b9e5796b AM |
3383 | unsigned int off = 0; |
3384 | ||
3385 | while (bfd_get_section_contents (abfd, glink, buf, | |
3386 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3387 | { |
3388 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3389 | insn ^= B_DOT; | |
3390 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3391 | { |
3392 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3393 | break; | |
3394 | } | |
3395 | off += 4; | |
3396 | if (off > 4) | |
3397 | break; | |
468392fb AM |
3398 | } |
3399 | ||
3400 | if (resolv_vma) | |
3401 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3402 | |
066ee829 AM |
3403 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3404 | if (relplt != NULL) | |
3405 | { | |
3406 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3407 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3408 | goto free_contents_and_exit; | |
68ffbac6 | 3409 | |
066ee829 AM |
3410 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3411 | size += plt_count * sizeof (asymbol); | |
468392fb | 3412 | |
066ee829 AM |
3413 | p = relplt->relocation; |
3414 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3415 | { |
3416 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3417 | if (p->addend != 0) | |
3418 | size += sizeof ("+0x") - 1 + 16; | |
3419 | } | |
066ee829 | 3420 | } |
468392fb AM |
3421 | } |
3422 | ||
699733f6 AM |
3423 | s = *ret = bfd_malloc (size); |
3424 | if (s == NULL) | |
7356fed5 | 3425 | goto free_contents_and_exit; |
90e3cdf2 | 3426 | |
468392fb | 3427 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3428 | |
699733f6 | 3429 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3430 | { |
699733f6 | 3431 | bfd_vma ent; |
90e3cdf2 | 3432 | |
5ef11c02 AM |
3433 | if (syms[i]->value > opd->size - 8) |
3434 | continue; | |
3435 | ||
699733f6 AM |
3436 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3437 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3438 | { |
c9727e01 | 3439 | long lo, hi; |
699733f6 | 3440 | size_t len; |
c9727e01 | 3441 | asection *sec = abfd->sections; |
90e3cdf2 | 3442 | |
699733f6 AM |
3443 | *s = *syms[i]; |
3444 | lo = codesecsym; | |
3445 | hi = codesecsymend; | |
3446 | while (lo < hi) | |
3447 | { | |
c9727e01 | 3448 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3449 | if (syms[mid]->section->vma < ent) |
3450 | lo = mid + 1; | |
3451 | else if (syms[mid]->section->vma > ent) | |
3452 | hi = mid; | |
3453 | else | |
c9727e01 AM |
3454 | { |
3455 | sec = syms[mid]->section; | |
3456 | break; | |
3457 | } | |
699733f6 AM |
3458 | } |
3459 | ||
c9727e01 | 3460 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3461 | sec = syms[lo - 1]->section; |
699733f6 AM |
3462 | |
3463 | for (; sec != NULL; sec = sec->next) | |
3464 | { | |
3465 | if (sec->vma > ent) | |
3466 | break; | |
63524580 JK |
3467 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3468 | info file. */ | |
3469 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3470 | break; |
3471 | if ((sec->flags & SEC_CODE) != 0) | |
3472 | s->section = sec; | |
3473 | } | |
6ba2a415 | 3474 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3475 | s->value = ent - s->section->vma; |
3476 | s->name = names; | |
3477 | *names++ = '.'; | |
3478 | len = strlen (syms[i]->name); | |
3479 | memcpy (names, syms[i]->name, len + 1); | |
3480 | names += len + 1; | |
6f610d07 UW |
3481 | /* Have udata.p point back to the original symbol this |
3482 | synthetic symbol was derived from. */ | |
3483 | s->udata.p = syms[i]; | |
699733f6 | 3484 | s++; |
90e3cdf2 | 3485 | } |
90e3cdf2 | 3486 | } |
699733f6 | 3487 | free (contents); |
468392fb AM |
3488 | |
3489 | if (glink != NULL && relplt != NULL) | |
3490 | { | |
3491 | if (resolv_vma) | |
3492 | { | |
3493 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3494 | memset (s, 0, sizeof *s); |
468392fb | 3495 | s->the_bfd = abfd; |
6ba2a415 | 3496 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3497 | s->section = glink; |
3498 | s->value = resolv_vma - glink->vma; | |
3499 | s->name = names; | |
3500 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3501 | names += sizeof ("__glink_PLTresolve"); | |
3502 | s++; | |
3503 | count++; | |
3504 | } | |
3505 | ||
3506 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3507 | stub rather than on the glink branch table entry. The | |
3508 | objdump disassembler would then use a sensible symbol | |
3509 | name on plt calls. The difficulty in doing so is | |
3510 | a) finding the stubs, and, | |
3511 | b) matching stubs against plt entries, and, | |
3512 | c) there can be multiple stubs for a given plt entry. | |
3513 | ||
3514 | Solving (a) could be done by code scanning, but older | |
3515 | ppc64 binaries used different stubs to current code. | |
3516 | (b) is the tricky one since you need to known the toc | |
3517 | pointer for at least one function that uses a pic stub to | |
3518 | be able to calculate the plt address referenced. | |
3519 | (c) means gdb would need to set multiple breakpoints (or | |
3520 | find the glink branch itself) when setting breakpoints | |
3521 | for pending shared library loads. */ | |
3522 | p = relplt->relocation; | |
3523 | for (i = 0; i < plt_count; i++, p++) | |
3524 | { | |
3525 | size_t len; | |
3526 | ||
3527 | *s = **p->sym_ptr_ptr; | |
3528 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3529 | we are defining a symbol, ensure one of them is set. */ | |
3530 | if ((s->flags & BSF_LOCAL) == 0) | |
3531 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3532 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3533 | s->section = glink; |
3534 | s->value = glink_vma - glink->vma; | |
3535 | s->name = names; | |
3536 | s->udata.p = NULL; | |
3537 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3538 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3539 | names += len; | |
e054468f AM |
3540 | if (p->addend != 0) |
3541 | { | |
3542 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3543 | names += sizeof ("+0x") - 1; | |
3544 | bfd_sprintf_vma (abfd, names, p->addend); | |
3545 | names += strlen (names); | |
3546 | } | |
468392fb AM |
3547 | memcpy (names, "@plt", sizeof ("@plt")); |
3548 | names += sizeof ("@plt"); | |
3549 | s++; | |
b9e5796b AM |
3550 | if (abi < 2) |
3551 | { | |
3552 | glink_vma += 8; | |
3553 | if (i >= 0x8000) | |
3554 | glink_vma += 4; | |
3555 | } | |
3556 | else | |
468392fb AM |
3557 | glink_vma += 4; |
3558 | } | |
3559 | count += plt_count; | |
3560 | } | |
90e3cdf2 JJ |
3561 | } |
3562 | ||
c9727e01 | 3563 | done: |
a7535cf3 | 3564 | free (syms); |
90e3cdf2 JJ |
3565 | return count; |
3566 | } | |
5bd4f169 | 3567 | \f |
65f38f15 AM |
3568 | /* The following functions are specific to the ELF linker, while |
3569 | functions above are used generally. Those named ppc64_elf_* are | |
3570 | called by the main ELF linker code. They appear in this file more | |
3571 | or less in the order in which they are called. eg. | |
3572 | ppc64_elf_check_relocs is called early in the link process, | |
3573 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3574 | called. |
3575 | ||
3576 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3577 | functions have both a function code symbol and a function descriptor | |
3578 | symbol. A call to foo in a relocatable object file looks like: | |
3579 | ||
3580 | . .text | |
3581 | . x: | |
3582 | . bl .foo | |
3583 | . nop | |
3584 | ||
3585 | The function definition in another object file might be: | |
3586 | ||
3587 | . .section .opd | |
3588 | . foo: .quad .foo | |
3589 | . .quad .TOC.@tocbase | |
3590 | . .quad 0 | |
3591 | . | |
3592 | . .text | |
3593 | . .foo: blr | |
3594 | ||
3595 | When the linker resolves the call during a static link, the branch | |
3596 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3597 | If the function definition is in a shared library, things are a little | |
3598 | different: The call goes via a plt call stub, the opd information gets | |
3599 | copied to the plt, and the linker patches the nop. | |
3600 | ||
3601 | . x: | |
3602 | . bl .foo_stub | |
3603 | . ld 2,40(1) | |
3604 | . | |
3605 | . | |
3606 | . .foo_stub: | |
71a39c98 AM |
3607 | . std 2,40(1) # in practice, the call stub |
3608 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3609 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3610 | . ld 12,0(11) | |
3611 | . ld 2,8(11) | |
3612 | . mtctr 12 | |
3613 | . ld 11,16(11) | |
e86ce104 AM |
3614 | . bctr |
3615 | . | |
3616 | . .section .plt | |
3617 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3618 | ||
3619 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3620 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3621 | copying. | |
3622 | ||
3623 | What are the difficulties here? Well, firstly, the relocations | |
3624 | examined by the linker in check_relocs are against the function code | |
3625 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3626 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3627 | to carefully copy dynamic link information from one symbol to the other. | |
3628 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3629 | symbol as is normal for most other backends. We need foo dynamic | |
3630 | instead, at least for an application final link. However, when | |
3631 | creating a shared library containing foo, we need to have both symbols | |
3632 | dynamic so that references to .foo are satisfied during the early | |
3633 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3634 | definition from some other object, eg. a static library. |
3635 | ||
3636 | Update: As of August 2004, we support a new convention. Function | |
3637 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3638 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3639 | |
1d483afe | 3640 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3641 | selects those that must be copied when linking a shared library, |
3642 | even when the symbol is local. */ | |
65f38f15 | 3643 | |
1d483afe AM |
3644 | static int |
3645 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3646 | enum elf_ppc64_reloc_type r_type) | |
3647 | { | |
3648 | switch (r_type) | |
3649 | { | |
3650 | default: | |
3651 | return 1; | |
3652 | ||
3653 | case R_PPC64_REL32: | |
3654 | case R_PPC64_REL64: | |
3655 | case R_PPC64_REL30: | |
3656 | return 0; | |
3657 | ||
3658 | case R_PPC64_TPREL16: | |
3659 | case R_PPC64_TPREL16_LO: | |
3660 | case R_PPC64_TPREL16_HI: | |
3661 | case R_PPC64_TPREL16_HA: | |
3662 | case R_PPC64_TPREL16_DS: | |
3663 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3664 | case R_PPC64_TPREL16_HIGH: |
3665 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3666 | case R_PPC64_TPREL16_HIGHER: |
3667 | case R_PPC64_TPREL16_HIGHERA: | |
3668 | case R_PPC64_TPREL16_HIGHEST: | |
3669 | case R_PPC64_TPREL16_HIGHESTA: | |
3670 | case R_PPC64_TPREL64: | |
3671 | return !info->executable; | |
3672 | } | |
3673 | } | |
65f38f15 | 3674 | |
f4656909 AM |
3675 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3676 | copying dynamic variables from a shared lib into an app's dynbss | |
3677 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3678 | shared lib. With code that gcc generates, it's vital that this be |
3679 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3680 | the address of a function descriptor, which resides in the .opd | |
3681 | section. gcc uses the descriptor directly rather than going via the | |
3682 | GOT as some other ABI's do, which means that initialized function | |
3683 | pointers must reference the descriptor. Thus, a function pointer | |
3684 | initialized to the address of a function in a shared library will | |
3685 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3686 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3687 | presents a problem as a plt entry for that function is also |
3688 | initialized from the function descriptor symbol and the copy reloc | |
3689 | may not be initialized first. */ | |
a23b6845 | 3690 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3691 | |
721956f4 | 3692 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3693 | string. */ |
3694 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3695 | |
3696 | /* Linker stubs. | |
3697 | ppc_stub_long_branch: | |
3698 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3699 | destination, but a 24 bit branch in a stub section will reach. | |
3700 | . b dest | |
3701 | ||
3702 | ppc_stub_plt_branch: | |
3703 | Similar to the above, but a 24 bit branch in the stub section won't | |
3704 | reach its destination. | |
71a39c98 AM |
3705 | . addis %r11,%r2,xxx@toc@ha |
3706 | . ld %r12,xxx@toc@l(%r11) | |
3707 | . mtctr %r12 | |
721956f4 AM |
3708 | . bctr |
3709 | ||
3710 | ppc_stub_plt_call: | |
2c66dc6c AM |
3711 | Used to call a function in a shared library. If it so happens that |
3712 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3713 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3714 | . std %r2,40(%r1) |
71a39c98 AM |
3715 | . addis %r11,%r2,xxx@toc@ha |
3716 | . ld %r12,xxx+0@toc@l(%r11) | |
3717 | . mtctr %r12 | |
3718 | . ld %r2,xxx+8@toc@l(%r11) | |
3719 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3720 | . bctr |
ad8e1ba5 AM |
3721 | |
3722 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3723 | code to adjust the value and save r2 to support multiple toc sections. | |
3724 | A ppc_stub_long_branch with an r2 offset looks like: | |
3725 | . std %r2,40(%r1) | |
3726 | . addis %r2,%r2,off@ha | |
3727 | . addi %r2,%r2,off@l | |
3728 | . b dest | |
3729 | ||
3730 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3731 | . std %r2,40(%r1) | |
71a39c98 AM |
3732 | . addis %r11,%r2,xxx@toc@ha |
3733 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3734 | . addis %r2,%r2,off@ha |
3735 | . addi %r2,%r2,off@l | |
71a39c98 | 3736 | . mtctr %r12 |
ad8e1ba5 | 3737 | . bctr |
ac2df442 AM |
3738 | |
3739 | In cases where the "addis" instruction would add zero, the "addis" is | |
3740 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3741 | */ |
3742 | ||
3743 | enum ppc_stub_type { | |
3744 | ppc_stub_none, | |
3745 | ppc_stub_long_branch, | |
ad8e1ba5 | 3746 | ppc_stub_long_branch_r2off, |
721956f4 | 3747 | ppc_stub_plt_branch, |
ad8e1ba5 | 3748 | ppc_stub_plt_branch_r2off, |
794e51c0 AM |
3749 | ppc_stub_plt_call, |
3750 | ppc_stub_plt_call_r2save | |
721956f4 AM |
3751 | }; |
3752 | ||
3753 | struct ppc_stub_hash_entry { | |
3754 | ||
3755 | /* Base hash table entry structure. */ | |
3756 | struct bfd_hash_entry root; | |
3757 | ||
ad8e1ba5 AM |
3758 | enum ppc_stub_type stub_type; |
3759 | ||
721956f4 AM |
3760 | /* The stub section. */ |
3761 | asection *stub_sec; | |
3762 | ||
3763 | /* Offset within stub_sec of the beginning of this stub. */ | |
3764 | bfd_vma stub_offset; | |
3765 | ||
3766 | /* Given the symbol's value and its section we can determine its final | |
3767 | value when building the stubs (so the stub knows where to jump. */ | |
3768 | bfd_vma target_value; | |
3769 | asection *target_section; | |
3770 | ||
721956f4 AM |
3771 | /* The symbol table entry, if any, that this was derived from. */ |
3772 | struct ppc_link_hash_entry *h; | |
e054468f | 3773 | struct plt_entry *plt_ent; |
721956f4 AM |
3774 | |
3775 | /* Where this stub is being called from, or, in the case of combined | |
3776 | stub sections, the first input section in the group. */ | |
3777 | asection *id_sec; | |
6911b7dc AM |
3778 | |
3779 | /* Symbol st_other. */ | |
3780 | unsigned char other; | |
721956f4 AM |
3781 | }; |
3782 | ||
3783 | struct ppc_branch_hash_entry { | |
3784 | ||
3785 | /* Base hash table entry structure. */ | |
3786 | struct bfd_hash_entry root; | |
3787 | ||
c456f082 | 3788 | /* Offset within branch lookup table. */ |
721956f4 AM |
3789 | unsigned int offset; |
3790 | ||
3791 | /* Generation marker. */ | |
3792 | unsigned int iter; | |
3793 | }; | |
65f38f15 | 3794 | |
19e08130 AM |
3795 | /* Used to track dynamic relocations for local symbols. */ |
3796 | struct ppc_dyn_relocs | |
3797 | { | |
3798 | struct ppc_dyn_relocs *next; | |
3799 | ||
3800 | /* The input section of the reloc. */ | |
3801 | asection *sec; | |
3802 | ||
3803 | /* Total number of relocs copied for the input section. */ | |
3804 | unsigned int count : 31; | |
3805 | ||
3806 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3807 | unsigned int ifunc : 1; | |
3808 | }; | |
3809 | ||
65f38f15 AM |
3810 | struct ppc_link_hash_entry |
3811 | { | |
3812 | struct elf_link_hash_entry elf; | |
3813 | ||
b3fac117 AM |
3814 | union { |
3815 | /* A pointer to the most recently used stub hash entry against this | |
3816 | symbol. */ | |
3817 | struct ppc_stub_hash_entry *stub_cache; | |
3818 | ||
3819 | /* A pointer to the next symbol starting with a '.' */ | |
3820 | struct ppc_link_hash_entry *next_dot_sym; | |
3821 | } u; | |
721956f4 | 3822 | |
65f38f15 | 3823 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3824 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3825 | |
721956f4 | 3826 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3827 | struct ppc_link_hash_entry *oh; |
721956f4 | 3828 | |
e86ce104 AM |
3829 | /* Flag function code and descriptor symbols. */ |
3830 | unsigned int is_func:1; | |
3831 | unsigned int is_func_descriptor:1; | |
908b32fc | 3832 | unsigned int fake:1; |
411e1bfb | 3833 | |
c5614fa4 AM |
3834 | /* Whether global opd/toc sym has been adjusted or not. |
3835 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3836 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3837 | unsigned int adjust_done:1; |
3838 | ||
99877b66 AM |
3839 | /* Set if we twiddled this symbol to weak at some stage. */ |
3840 | unsigned int was_undefined:1; | |
3841 | ||
411e1bfb | 3842 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3843 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3844 | corresponding relocs are encountered during check_relocs. | |
3845 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3846 | indicate the corresponding GOT entry type is not needed. | |
3847 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3848 | a TPREL one. We use a separate flag rather than setting TPREL | |
3849 | just for convenience in distinguishing the two cases. */ | |
3850 | #define TLS_GD 1 /* GD reloc. */ | |
3851 | #define TLS_LD 2 /* LD reloc. */ | |
3852 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3853 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3854 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3855 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3856 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3857 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3858 | unsigned char tls_mask; |
65f38f15 AM |
3859 | }; |
3860 | ||
3861 | /* ppc64 ELF linker hash table. */ | |
3862 | ||
3863 | struct ppc_link_hash_table | |
3864 | { | |
3865 | struct elf_link_hash_table elf; | |
3866 | ||
721956f4 AM |
3867 | /* The stub hash table. */ |
3868 | struct bfd_hash_table stub_hash_table; | |
3869 | ||
3870 | /* Another hash table for plt_branch stubs. */ | |
3871 | struct bfd_hash_table branch_hash_table; | |
3872 | ||
3b421ab3 AM |
3873 | /* Hash table for function prologue tocsave. */ |
3874 | htab_t tocsave_htab; | |
3875 | ||
e7d1c40c AM |
3876 | /* Various options and other info passed from the linker. */ |
3877 | struct ppc64_elf_params *params; | |
721956f4 AM |
3878 | |
3879 | /* Array to keep track of which stub sections have been created, and | |
3880 | information on stub grouping. */ | |
3881 | struct map_stub { | |
3882 | /* This is the section to which stubs in the group will be attached. */ | |
3883 | asection *link_sec; | |
3884 | /* The stub section. */ | |
3885 | asection *stub_sec; | |
ad8e1ba5 AM |
3886 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3887 | bfd_vma toc_off; | |
721956f4 AM |
3888 | } *stub_group; |
3889 | ||
ad8e1ba5 AM |
3890 | /* Temp used when calculating TOC pointers. */ |
3891 | bfd_vma toc_curr; | |
bf102f86 AM |
3892 | bfd *toc_bfd; |
3893 | asection *toc_first_sec; | |
ad8e1ba5 | 3894 | |
8f3bab57 AM |
3895 | /* Highest input section id. */ |
3896 | int top_id; | |
3897 | ||
734b6cf9 AM |
3898 | /* Highest output section index. */ |
3899 | int top_index; | |
3900 | ||
b3fac117 AM |
3901 | /* Used when adding symbols. */ |
3902 | struct ppc_link_hash_entry *dot_syms; | |
3903 | ||
734b6cf9 AM |
3904 | /* List of input sections for each output section. */ |
3905 | asection **input_list; | |
721956f4 | 3906 | |
33e44f2e | 3907 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3908 | asection *dynbss; |
3909 | asection *relbss; | |
3910 | asection *glink; | |
82bd7b59 | 3911 | asection *sfpr; |
4ce794b7 AM |
3912 | asection *brlt; |
3913 | asection *relbrlt; | |
58d180e8 | 3914 | asection *glink_eh_frame; |
ec338859 | 3915 | |
8387904d AM |
3916 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3917 | struct ppc_link_hash_entry *tls_get_addr; | |
3918 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3919 | |
927be08e AM |
3920 | /* The size of reliplt used by got entry relocs. */ |
3921 | bfd_size_type got_reli_size; | |
3922 | ||
9b5ecbd0 | 3923 | /* Statistics. */ |
794e51c0 | 3924 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
9b5ecbd0 | 3925 | |
ee75fd95 AM |
3926 | /* Number of stubs against global syms. */ |
3927 | unsigned long stub_globals; | |
3928 | ||
ee67d69a AM |
3929 | /* Set if we're linking code with function descriptors. */ |
3930 | unsigned int opd_abi:1; | |
3931 | ||
4c52953f | 3932 | /* Support for multiple toc sections. */ |
33c0ec9d | 3933 | unsigned int do_multi_toc:1; |
4c52953f | 3934 | unsigned int multi_toc_needed:1; |
927be08e | 3935 | unsigned int second_toc_pass:1; |
67f0cbdb | 3936 | unsigned int do_toc_opt:1; |
4c52953f | 3937 | |
5d1634d7 | 3938 | /* Set on error. */ |
99877b66 | 3939 | unsigned int stub_error:1; |
721956f4 | 3940 | |
7d9616d7 | 3941 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3942 | unsigned int twiddled_syms:1; |
721956f4 AM |
3943 | |
3944 | /* Incremented every time we size stubs. */ | |
3945 | unsigned int stub_iteration; | |
5d1634d7 | 3946 | |
87d72d41 AM |
3947 | /* Small local sym cache. */ |
3948 | struct sym_cache sym_cache; | |
65f38f15 AM |
3949 | }; |
3950 | ||
4c52953f AM |
3951 | /* Rename some of the generic section flags to better document how they |
3952 | are used here. */ | |
b0dddeec AM |
3953 | |
3954 | /* Nonzero if this section has TLS related relocations. */ | |
3955 | #define has_tls_reloc sec_flg0 | |
3956 | ||
3957 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3958 | #define has_tls_get_addr_call sec_flg1 | |
3959 | ||
3960 | /* Nonzero if this section has any toc or got relocs. */ | |
3961 | #define has_toc_reloc sec_flg2 | |
3962 | ||
3963 | /* Nonzero if this section has a call to another section that uses | |
3964 | the toc or got. */ | |
d77c8a4b | 3965 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3966 | |
3967 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3968 | #define call_check_in_progress sec_flg4 |
70cc837d | 3969 | #define call_check_done sec_flg5 |
4c52953f | 3970 | |
65f38f15 AM |
3971 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3972 | ||
3973 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3974 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3975 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3976 | |
721956f4 AM |
3977 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3978 | ((struct ppc_stub_hash_entry *) \ | |
3979 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3980 | ||
3981 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3982 | ((struct ppc_branch_hash_entry *) \ | |
3983 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3984 | ||
3985 | /* Create an entry in the stub hash table. */ | |
3986 | ||
3987 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3988 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3989 | struct bfd_hash_table *table, | |
3990 | const char *string) | |
721956f4 AM |
3991 | { |
3992 | /* Allocate the structure if it has not already been allocated by a | |
3993 | subclass. */ | |
3994 | if (entry == NULL) | |
3995 | { | |
3996 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3997 | if (entry == NULL) | |
3998 | return entry; | |
3999 | } | |
4000 | ||
4001 | /* Call the allocation method of the superclass. */ | |
4002 | entry = bfd_hash_newfunc (entry, table, string); | |
4003 | if (entry != NULL) | |
4004 | { | |
4005 | struct ppc_stub_hash_entry *eh; | |
4006 | ||
4007 | /* Initialize the local fields. */ | |
4008 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4009 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
4010 | eh->stub_sec = NULL; |
4011 | eh->stub_offset = 0; | |
4012 | eh->target_value = 0; | |
4013 | eh->target_section = NULL; | |
721956f4 | 4014 | eh->h = NULL; |
6911b7dc | 4015 | eh->plt_ent = NULL; |
721956f4 | 4016 | eh->id_sec = NULL; |
6911b7dc | 4017 | eh->other = 0; |
721956f4 AM |
4018 | } |
4019 | ||
4020 | return entry; | |
4021 | } | |
4022 | ||
4023 | /* Create an entry in the branch hash table. */ | |
4024 | ||
4025 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4026 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4027 | struct bfd_hash_table *table, | |
4028 | const char *string) | |
721956f4 AM |
4029 | { |
4030 | /* Allocate the structure if it has not already been allocated by a | |
4031 | subclass. */ | |
4032 | if (entry == NULL) | |
4033 | { | |
4034 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4035 | if (entry == NULL) | |
4036 | return entry; | |
4037 | } | |
4038 | ||
4039 | /* Call the allocation method of the superclass. */ | |
4040 | entry = bfd_hash_newfunc (entry, table, string); | |
4041 | if (entry != NULL) | |
4042 | { | |
4043 | struct ppc_branch_hash_entry *eh; | |
4044 | ||
4045 | /* Initialize the local fields. */ | |
4046 | eh = (struct ppc_branch_hash_entry *) entry; | |
4047 | eh->offset = 0; | |
4048 | eh->iter = 0; | |
4049 | } | |
4050 | ||
4051 | return entry; | |
4052 | } | |
4053 | ||
65f38f15 AM |
4054 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4055 | ||
4056 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4057 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4058 | struct bfd_hash_table *table, | |
4059 | const char *string) | |
65f38f15 AM |
4060 | { |
4061 | /* Allocate the structure if it has not already been allocated by a | |
4062 | subclass. */ | |
4063 | if (entry == NULL) | |
4064 | { | |
4065 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4066 | if (entry == NULL) | |
4067 | return entry; | |
4068 | } | |
4069 | ||
4070 | /* Call the allocation method of the superclass. */ | |
4071 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4072 | if (entry != NULL) | |
4073 | { | |
4074 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4075 | ||
b3fac117 | 4076 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4077 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4078 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4079 | ||
4080 | /* When making function calls, old ABI code references function entry | |
4081 | points (dot symbols), while new ABI code references the function | |
4082 | descriptor symbol. We need to make any combination of reference and | |
4083 | definition work together, without breaking archive linking. | |
4084 | ||
4085 | For a defined function "foo" and an undefined call to "bar": | |
4086 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4087 | "bar" too). | |
4088 | A new object defines "foo" and references "bar". | |
4089 | ||
4090 | A new object thus has no problem with its undefined symbols being | |
4091 | satisfied by definitions in an old object. On the other hand, the | |
4092 | old object won't have ".bar" satisfied by a new object. | |
4093 | ||
4094 | Keep a list of newly added dot-symbols. */ | |
4095 | ||
4096 | if (string[0] == '.') | |
4097 | { | |
4098 | struct ppc_link_hash_table *htab; | |
4099 | ||
4100 | htab = (struct ppc_link_hash_table *) table; | |
4101 | eh->u.next_dot_sym = htab->dot_syms; | |
4102 | htab->dot_syms = eh; | |
4103 | } | |
65f38f15 AM |
4104 | } |
4105 | ||
4106 | return entry; | |
4107 | } | |
4108 | ||
3b421ab3 AM |
4109 | struct tocsave_entry { |
4110 | asection *sec; | |
4111 | bfd_vma offset; | |
4112 | }; | |
4113 | ||
4114 | static hashval_t | |
4115 | tocsave_htab_hash (const void *p) | |
4116 | { | |
4117 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4118 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4119 | } | |
4120 | ||
4121 | static int | |
4122 | tocsave_htab_eq (const void *p1, const void *p2) | |
4123 | { | |
4124 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4125 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4126 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4127 | } | |
4128 | ||
65f38f15 AM |
4129 | /* Create a ppc64 ELF linker hash table. */ |
4130 | ||
4131 | static struct bfd_link_hash_table * | |
4ce794b7 | 4132 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4133 | { |
4134 | struct ppc_link_hash_table *htab; | |
4135 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4136 | ||
4ce794b7 | 4137 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4138 | if (htab == NULL) |
4139 | return NULL; | |
4140 | ||
66eb6687 | 4141 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4142 | sizeof (struct ppc_link_hash_entry), |
4143 | PPC64_ELF_DATA)) | |
65f38f15 | 4144 | { |
e2d34d7d | 4145 | free (htab); |
65f38f15 AM |
4146 | return NULL; |
4147 | } | |
4148 | ||
721956f4 | 4149 | /* Init the stub hash table too. */ |
66eb6687 AM |
4150 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4151 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b JK |
4152 | { |
4153 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4154 | return NULL; | |
4155 | } | |
721956f4 AM |
4156 | |
4157 | /* And the branch hash table. */ | |
66eb6687 AM |
4158 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4159 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4160 | { |
4161 | bfd_hash_table_free (&htab->stub_hash_table); | |
4162 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4163 | return NULL; | |
4164 | } | |
721956f4 | 4165 | |
3b421ab3 AM |
4166 | htab->tocsave_htab = htab_try_create (1024, |
4167 | tocsave_htab_hash, | |
4168 | tocsave_htab_eq, | |
4169 | NULL); | |
4170 | if (htab->tocsave_htab == NULL) | |
2915c55b JK |
4171 | { |
4172 | bfd_hash_table_free (&htab->branch_hash_table); | |
4173 | bfd_hash_table_free (&htab->stub_hash_table); | |
4174 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4175 | return NULL; | |
4176 | } | |
3b421ab3 | 4177 | |
3254fd24 AM |
4178 | /* Initializing two fields of the union is just cosmetic. We really |
4179 | only care about glist, but when compiled on a 32-bit host the | |
4180 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4181 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4182 | htab->elf.init_got_refcount.refcount = 0; |
4183 | htab->elf.init_got_refcount.glist = NULL; | |
4184 | htab->elf.init_plt_refcount.refcount = 0; | |
4185 | htab->elf.init_plt_refcount.glist = NULL; | |
4186 | htab->elf.init_got_offset.offset = 0; | |
4187 | htab->elf.init_got_offset.glist = NULL; | |
4188 | htab->elf.init_plt_offset.offset = 0; | |
4189 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4190 | |
65f38f15 AM |
4191 | return &htab->elf.root; |
4192 | } | |
4193 | ||
721956f4 AM |
4194 | /* Free the derived linker hash table. */ |
4195 | ||
4196 | static void | |
4ce794b7 | 4197 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4198 | { |
3b421ab3 | 4199 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4200 | |
3b421ab3 AM |
4201 | bfd_hash_table_free (&htab->stub_hash_table); |
4202 | bfd_hash_table_free (&htab->branch_hash_table); | |
4203 | if (htab->tocsave_htab) | |
4204 | htab_delete (htab->tocsave_htab); | |
9f7c3e5e | 4205 | _bfd_elf_link_hash_table_free (hash); |
721956f4 AM |
4206 | } |
4207 | ||
bfeb4a28 AM |
4208 | /* Create sections for linker generated code. */ |
4209 | ||
4210 | static bfd_boolean | |
4211 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4212 | { | |
4213 | struct ppc_link_hash_table *htab; | |
4214 | flagword flags; | |
4215 | ||
4216 | htab = ppc_hash_table (info); | |
4217 | ||
4218 | /* Create .sfpr for code to save and restore fp regs. */ | |
4219 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4220 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4221 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4222 | flags); | |
4223 | if (htab->sfpr == NULL | |
4224 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4225 | return FALSE; | |
4226 | ||
4227 | /* Create .glink for lazy dynamic linking support. */ | |
4228 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4229 | flags); | |
4230 | if (htab->glink == NULL | |
4231 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4232 | return FALSE; | |
4233 | ||
4234 | if (!info->no_ld_generated_unwind_info) | |
4235 | { | |
4236 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4237 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4238 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4239 | ".eh_frame", | |
4240 | flags); | |
4241 | if (htab->glink_eh_frame == NULL | |
4242 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4243 | return FALSE; | |
4244 | } | |
4245 | ||
4246 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4247 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4248 | if (htab->elf.iplt == NULL | |
4249 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4250 | return FALSE; |
4251 | ||
4252 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4253 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4254 | htab->elf.irelplt |
4255 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4256 | if (htab->elf.irelplt == NULL | |
4257 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4258 | return FALSE; |
4259 | ||
4260 | /* Create branch lookup table for plt_branch stubs. */ | |
4261 | flags = (SEC_ALLOC | SEC_LOAD | |
4262 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4263 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4264 | flags); | |
4265 | if (htab->brlt == NULL | |
4266 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4267 | return FALSE; | |
4268 | ||
4269 | if (!info->shared) | |
4270 | return TRUE; | |
4271 | ||
4272 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4273 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4274 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4275 | ".rela.branch_lt", | |
4276 | flags); | |
4277 | if (htab->relbrlt == NULL | |
4278 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4279 | return FALSE; | |
4280 | ||
4281 | return TRUE; | |
4282 | } | |
4283 | ||
e717da7e AM |
4284 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4285 | ||
bfeb4a28 | 4286 | bfd_boolean |
e7d1c40c AM |
4287 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4288 | struct ppc64_elf_params *params) | |
e717da7e AM |
4289 | { |
4290 | struct ppc_link_hash_table *htab; | |
4291 | ||
e7d1c40c | 4292 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4293 | |
4294 | /* Always hook our dynamic sections into the first bfd, which is the | |
4295 | linker created stub bfd. This ensures that the GOT header is at | |
4296 | the start of the output TOC section. */ | |
4297 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4298 | if (htab == NULL) |
bfeb4a28 | 4299 | return FALSE; |
e7d1c40c AM |
4300 | htab->elf.dynobj = params->stub_bfd; |
4301 | htab->params = params; | |
bfeb4a28 AM |
4302 | |
4303 | if (info->relocatable) | |
4304 | return TRUE; | |
4305 | ||
4306 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4307 | } |
4308 | ||
721956f4 AM |
4309 | /* Build a name for an entry in the stub hash table. */ |
4310 | ||
4311 | static char * | |
4ce794b7 AM |
4312 | ppc_stub_name (const asection *input_section, |
4313 | const asection *sym_sec, | |
4314 | const struct ppc_link_hash_entry *h, | |
4315 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4316 | { |
4317 | char *stub_name; | |
bcaa2f82 | 4318 | ssize_t len; |
721956f4 AM |
4319 | |
4320 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4321 | offsets from a sym as a branch target? In fact, we could | |
4322 | probably assume the addend is always zero. */ | |
4323 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4324 | ||
4325 | if (h) | |
4326 | { | |
4327 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4328 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4329 | if (stub_name == NULL) |
4330 | return stub_name; | |
4331 | ||
bcaa2f82 AM |
4332 | len = sprintf (stub_name, "%08x.%s+%x", |
4333 | input_section->id & 0xffffffff, | |
4334 | h->elf.root.root.string, | |
4335 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4336 | } |
4337 | else | |
4338 | { | |
ad8e1ba5 | 4339 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4340 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4341 | if (stub_name == NULL) |
4342 | return stub_name; | |
4343 | ||
bcaa2f82 AM |
4344 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4345 | input_section->id & 0xffffffff, | |
4346 | sym_sec->id & 0xffffffff, | |
4347 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4348 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4349 | } |
bcaa2f82 | 4350 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4351 | stub_name[len - 2] = 0; |
721956f4 AM |
4352 | return stub_name; |
4353 | } | |
4354 | ||
4355 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4356 | creating the stub name takes a bit of time. */ | |
4357 | ||
4358 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4359 | ppc_get_stub_entry (const asection *input_section, |
4360 | const asection *sym_sec, | |
039b3fef | 4361 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4362 | const Elf_Internal_Rela *rel, |
4363 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4364 | { |
4365 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4366 | const asection *id_sec; |
4367 | ||
4368 | /* If this input section is part of a group of sections sharing one | |
4369 | stub section, then use the id of the first section in the group. | |
4370 | Stub names need to include a section id, as there may well be | |
4371 | more than one stub used to reach say, printf, and we need to | |
4372 | distinguish between them. */ | |
4373 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4374 | ||
b3fac117 AM |
4375 | if (h != NULL && h->u.stub_cache != NULL |
4376 | && h->u.stub_cache->h == h | |
4377 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4378 | { |
b3fac117 | 4379 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4380 | } |
4381 | else | |
4382 | { | |
4383 | char *stub_name; | |
4384 | ||
4385 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4386 | if (stub_name == NULL) | |
4387 | return NULL; | |
4388 | ||
4389 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4390 | stub_name, FALSE, FALSE); |
721956f4 | 4391 | if (h != NULL) |
b3fac117 | 4392 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4393 | |
4394 | free (stub_name); | |
4395 | } | |
4396 | ||
4397 | return stub_entry; | |
4398 | } | |
4399 | ||
4400 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4401 | stub entry are initialised. */ | |
4402 | ||
4403 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4404 | ppc_add_stub (const char *stub_name, |
4405 | asection *section, | |
25f53a85 | 4406 | struct bfd_link_info *info) |
721956f4 | 4407 | { |
25f53a85 | 4408 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4409 | asection *link_sec; |
4410 | asection *stub_sec; | |
4411 | struct ppc_stub_hash_entry *stub_entry; | |
4412 | ||
4413 | link_sec = htab->stub_group[section->id].link_sec; | |
4414 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4415 | if (stub_sec == NULL) | |
4416 | { | |
4417 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4418 | if (stub_sec == NULL) | |
4419 | { | |
d4c88bbb | 4420 | size_t namelen; |
721956f4 AM |
4421 | bfd_size_type len; |
4422 | char *s_name; | |
4423 | ||
d4c88bbb AM |
4424 | namelen = strlen (link_sec->name); |
4425 | len = namelen + sizeof (STUB_SUFFIX); | |
e7d1c40c | 4426 | s_name = bfd_alloc (htab->params->stub_bfd, len); |
721956f4 AM |
4427 | if (s_name == NULL) |
4428 | return NULL; | |
4429 | ||
d4c88bbb AM |
4430 | memcpy (s_name, link_sec->name, namelen); |
4431 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
e7d1c40c | 4432 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); |
721956f4 AM |
4433 | if (stub_sec == NULL) |
4434 | return NULL; | |
4435 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4436 | } | |
4437 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4438 | } | |
4439 | ||
4440 | /* Enter this entry into the linker stub hash table. */ | |
4441 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4442 | TRUE, FALSE); |
721956f4 AM |
4443 | if (stub_entry == NULL) |
4444 | { | |
8de848d8 | 4445 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4446 | section->owner, stub_name); |
721956f4 AM |
4447 | return NULL; |
4448 | } | |
4449 | ||
4450 | stub_entry->stub_sec = stub_sec; | |
4451 | stub_entry->stub_offset = 0; | |
4452 | stub_entry->id_sec = link_sec; | |
4453 | return stub_entry; | |
4454 | } | |
4455 | ||
e717da7e AM |
4456 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4457 | not already done. */ | |
65f38f15 | 4458 | |
b34976b6 | 4459 | static bfd_boolean |
e717da7e | 4460 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4461 | { |
e717da7e AM |
4462 | asection *got, *relgot; |
4463 | flagword flags; | |
4464 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4465 | |
0c8d6e5c | 4466 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4467 | return FALSE; |
4dfe6ac6 NC |
4468 | if (htab == NULL) |
4469 | return FALSE; | |
0ffa91dd | 4470 | |
33e44f2e AM |
4471 | if (!htab->elf.sgot |
4472 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4473 | return FALSE; | |
e717da7e AM |
4474 | |
4475 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4476 | | SEC_LINKER_CREATED); | |
4477 | ||
c456f082 | 4478 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4479 | if (!got |
e717da7e AM |
4480 | || !bfd_set_section_alignment (abfd, got, 3)) |
4481 | return FALSE; | |
65f38f15 | 4482 | |
c456f082 AM |
4483 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4484 | flags | SEC_READONLY); | |
e717da7e | 4485 | if (!relgot |
e717da7e | 4486 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4487 | return FALSE; |
e717da7e AM |
4488 | |
4489 | ppc64_elf_tdata (abfd)->got = got; | |
4490 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4491 | return TRUE; |
65f38f15 | 4492 | } |
5bd4f169 | 4493 | |
82bd7b59 | 4494 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4495 | |
b34976b6 | 4496 | static bfd_boolean |
4ce794b7 | 4497 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4498 | { |
65f38f15 | 4499 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4500 | |
65f38f15 | 4501 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4502 | return FALSE; |
65f38f15 | 4503 | |
e717da7e | 4504 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4505 | if (htab == NULL) |
4506 | return FALSE; | |
4507 | ||
3d4d4302 | 4508 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
65f38f15 | 4509 | if (!info->shared) |
3d4d4302 | 4510 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4511 | |
33e44f2e | 4512 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
4ce794b7 | 4513 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4514 | abort (); |
4515 | ||
b34976b6 | 4516 | return TRUE; |
5bd4f169 AM |
4517 | } |
4518 | ||
b31867b6 AM |
4519 | /* Follow indirect and warning symbol links. */ |
4520 | ||
4521 | static inline struct bfd_link_hash_entry * | |
4522 | follow_link (struct bfd_link_hash_entry *h) | |
4523 | { | |
4524 | while (h->type == bfd_link_hash_indirect | |
4525 | || h->type == bfd_link_hash_warning) | |
4526 | h = h->u.i.link; | |
4527 | return h; | |
4528 | } | |
4529 | ||
4530 | static inline struct elf_link_hash_entry * | |
4531 | elf_follow_link (struct elf_link_hash_entry *h) | |
4532 | { | |
4533 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4534 | } | |
4535 | ||
4536 | static inline struct ppc_link_hash_entry * | |
4537 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4538 | { | |
4539 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4540 | } | |
4541 | ||
40d16e0b AM |
4542 | /* Merge PLT info on FROM with that on TO. */ |
4543 | ||
4544 | static void | |
4545 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4546 | struct ppc_link_hash_entry *to) | |
4547 | { | |
4548 | if (from->elf.plt.plist != NULL) | |
4549 | { | |
4550 | if (to->elf.plt.plist != NULL) | |
4551 | { | |
4552 | struct plt_entry **entp; | |
4553 | struct plt_entry *ent; | |
4554 | ||
4555 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4556 | { | |
4557 | struct plt_entry *dent; | |
4558 | ||
4559 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4560 | if (dent->addend == ent->addend) | |
4561 | { | |
4562 | dent->plt.refcount += ent->plt.refcount; | |
4563 | *entp = ent->next; | |
4564 | break; | |
4565 | } | |
4566 | if (dent == NULL) | |
4567 | entp = &ent->next; | |
4568 | } | |
4569 | *entp = to->elf.plt.plist; | |
4570 | } | |
4571 | ||
4572 | to->elf.plt.plist = from->elf.plt.plist; | |
4573 | from->elf.plt.plist = NULL; | |
4574 | } | |
4575 | } | |
4576 | ||
65f38f15 AM |
4577 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4578 | ||
4579 | static void | |
fcfa13d2 AM |
4580 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4581 | struct elf_link_hash_entry *dir, | |
4582 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4583 | { |
4584 | struct ppc_link_hash_entry *edir, *eind; | |
4585 | ||
4586 | edir = (struct ppc_link_hash_entry *) dir; | |
4587 | eind = (struct ppc_link_hash_entry *) ind; | |
4588 | ||
c79d6685 AM |
4589 | edir->is_func |= eind->is_func; |
4590 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4591 | edir->tls_mask |= eind->tls_mask; | |
4592 | if (eind->oh != NULL) | |
4593 | edir->oh = ppc_follow_link (eind->oh); | |
4594 | ||
4595 | /* If called to transfer flags for a weakdef during processing | |
4596 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4597 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4598 | if (!(ELIMINATE_COPY_RELOCS | |
4599 | && eind->elf.root.type != bfd_link_hash_indirect | |
4600 | && edir->elf.dynamic_adjusted)) | |
4601 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4602 | ||
4603 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4604 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4605 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4606 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4607 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4608 | |
411e1bfb | 4609 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4610 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4611 | { |
bbd7ec4a AM |
4612 | if (edir->dyn_relocs != NULL) |
4613 | { | |
6061a67d AM |
4614 | struct elf_dyn_relocs **pp; |
4615 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4616 | |
fcfa13d2 | 4617 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4618 | list. Merge any entries against the same section. */ |
4619 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4620 | { | |
6061a67d | 4621 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4622 | |
4623 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4624 | if (q->sec == p->sec) | |
4625 | { | |
4626 | q->pc_count += p->pc_count; | |
4627 | q->count += p->count; | |
4628 | *pp = p->next; | |
4629 | break; | |
4630 | } | |
4631 | if (q == NULL) | |
4632 | pp = &p->next; | |
4633 | } | |
4634 | *pp = edir->dyn_relocs; | |
4635 | } | |
4636 | ||
65f38f15 AM |
4637 | edir->dyn_relocs = eind->dyn_relocs; |
4638 | eind->dyn_relocs = NULL; | |
4639 | } | |
65f38f15 | 4640 | |
68ba6d40 AM |
4641 | /* If we were called to copy over info for a weak sym, that's all. |
4642 | You might think dyn_relocs need not be copied over; After all, | |
4643 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4644 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4645 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4646 | dyn_relocs in read-only sections, and it does so on what is the | |
4647 | DIR sym here. */ | |
4648 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4649 | return; | |
4650 | ||
81848ca0 AM |
4651 | /* Copy over got entries that we may have already seen to the |
4652 | symbol which just became indirect. */ | |
411e1bfb AM |
4653 | if (eind->elf.got.glist != NULL) |
4654 | { | |
4655 | if (edir->elf.got.glist != NULL) | |
4656 | { | |
4657 | struct got_entry **entp; | |
4658 | struct got_entry *ent; | |
4659 | ||
4660 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4661 | { | |
4662 | struct got_entry *dent; | |
4663 | ||
4664 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4665 | if (dent->addend == ent->addend | |
e717da7e | 4666 | && dent->owner == ent->owner |
411e1bfb AM |
4667 | && dent->tls_type == ent->tls_type) |
4668 | { | |
4669 | dent->got.refcount += ent->got.refcount; | |
4670 | *entp = ent->next; | |
4671 | break; | |
4672 | } | |
4673 | if (dent == NULL) | |
4674 | entp = &ent->next; | |
4675 | } | |
4676 | *entp = edir->elf.got.glist; | |
4677 | } | |
4678 | ||
4679 | edir->elf.got.glist = eind->elf.got.glist; | |
4680 | eind->elf.got.glist = NULL; | |
4681 | } | |
4682 | ||
4683 | /* And plt entries. */ | |
40d16e0b | 4684 | move_plt_plist (eind, edir); |
411e1bfb | 4685 | |
fcfa13d2 | 4686 | if (eind->elf.dynindx != -1) |
411e1bfb | 4687 | { |
fcfa13d2 AM |
4688 | if (edir->elf.dynindx != -1) |
4689 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4690 | edir->elf.dynstr_index); | |
411e1bfb AM |
4691 | edir->elf.dynindx = eind->elf.dynindx; |
4692 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4693 | eind->elf.dynindx = -1; | |
4694 | eind->elf.dynstr_index = 0; | |
4695 | } | |
411e1bfb AM |
4696 | } |
4697 | ||
8387904d AM |
4698 | /* Find the function descriptor hash entry from the given function code |
4699 | hash entry FH. Link the entries via their OH fields. */ | |
4700 | ||
4701 | static struct ppc_link_hash_entry * | |
b31867b6 | 4702 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4703 | { |
4704 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4705 | ||
4706 | if (fdh == NULL) | |
4707 | { | |
4708 | const char *fd_name = fh->elf.root.root.string + 1; | |
4709 | ||
4710 | fdh = (struct ppc_link_hash_entry *) | |
4711 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4712 | if (fdh == NULL) |
4713 | return fdh; | |
4714 | ||
4715 | fdh->is_func_descriptor = 1; | |
4716 | fdh->oh = fh; | |
4717 | fh->is_func = 1; | |
4718 | fh->oh = fdh; | |
8387904d AM |
4719 | } |
4720 | ||
b31867b6 | 4721 | return ppc_follow_link (fdh); |
8387904d AM |
4722 | } |
4723 | ||
bb700d78 AM |
4724 | /* Make a fake function descriptor sym for the code sym FH. */ |
4725 | ||
4726 | static struct ppc_link_hash_entry * | |
4727 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4728 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4729 | { |
4730 | bfd *abfd; | |
4731 | asymbol *newsym; | |
4732 | struct bfd_link_hash_entry *bh; | |
4733 | struct ppc_link_hash_entry *fdh; | |
4734 | ||
4735 | abfd = fh->elf.root.u.undef.abfd; | |
4736 | newsym = bfd_make_empty_symbol (abfd); | |
4737 | newsym->name = fh->elf.root.root.string + 1; | |
4738 | newsym->section = bfd_und_section_ptr; | |
4739 | newsym->value = 0; | |
908b32fc | 4740 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4741 | |
4742 | bh = NULL; | |
4743 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4744 | newsym->flags, newsym->section, | |
4745 | newsym->value, NULL, FALSE, FALSE, | |
4746 | &bh)) | |
4747 | return NULL; | |
4748 | ||
4749 | fdh = (struct ppc_link_hash_entry *) bh; | |
4750 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4751 | fdh->fake = 1; |
4752 | fdh->is_func_descriptor = 1; | |
4753 | fdh->oh = fh; | |
4754 | fh->is_func = 1; | |
4755 | fh->oh = fdh; | |
bb700d78 AM |
4756 | return fdh; |
4757 | } | |
4758 | ||
8387904d AM |
4759 | /* Fix function descriptor symbols defined in .opd sections to be |
4760 | function type. */ | |
555cd476 AM |
4761 | |
4762 | static bfd_boolean | |
c16153ae | 4763 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4764 | struct bfd_link_info *info, |
555cd476 | 4765 | Elf_Internal_Sym *isym, |
6911b7dc | 4766 | const char **name, |
555cd476 AM |
4767 | flagword *flags ATTRIBUTE_UNUSED, |
4768 | asection **sec, | |
4769 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4770 | { | |
f64b2e8d NC |
4771 | if ((ibfd->flags & DYNAMIC) == 0 |
4772 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4773 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4774 | ||
e054468f | 4775 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4776 | { |
4777 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4778 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4779 | } |
e054468f AM |
4780 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4781 | ; | |
4782 | else if (*sec != NULL | |
70cc837d | 4783 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4784 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4785 | |
6911b7dc AM |
4786 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4787 | { | |
4788 | if (abiversion (ibfd) == 0) | |
4789 | set_abiversion (ibfd, 2); | |
4790 | else if (abiversion (ibfd) == 1) | |
4791 | { | |
4792 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4793 | " for ABI version 1\n"), name); | |
4794 | bfd_set_error (bfd_error_bad_value); | |
4795 | return FALSE; | |
4796 | } | |
4797 | } | |
4798 | ||
555cd476 AM |
4799 | return TRUE; |
4800 | } | |
4801 | ||
6911b7dc AM |
4802 | /* Merge non-visibility st_other attributes: local entry point. */ |
4803 | ||
4804 | static void | |
4805 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4806 | const Elf_Internal_Sym *isym, | |
4807 | bfd_boolean definition, | |
4808 | bfd_boolean dynamic) | |
4809 | { | |
4810 | if (definition && !dynamic) | |
4811 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4812 | | ELF_ST_VISIBILITY (h->other)); | |
4813 | } | |
4814 | ||
8387904d | 4815 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4816 | inclusion of a new ABI object archive that defines "bar". |
4817 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4818 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4819 | |
4820 | static struct elf_link_hash_entry * | |
4821 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4822 | struct bfd_link_info *info, | |
4823 | const char *name) | |
4824 | { | |
4825 | struct elf_link_hash_entry *h; | |
4826 | char *dot_name; | |
4827 | size_t len; | |
4828 | ||
4829 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4830 | if (h != NULL |
4831 | /* Don't return this sym if it is a fake function descriptor | |
4832 | created by add_symbol_adjust. */ | |
4833 | && !(h->root.type == bfd_link_hash_undefweak | |
4834 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4835 | return h; |
4836 | ||
4837 | if (name[0] == '.') | |
4838 | return h; | |
4839 | ||
4840 | len = strlen (name); | |
4841 | dot_name = bfd_alloc (abfd, len + 2); | |
4842 | if (dot_name == NULL) | |
4843 | return (struct elf_link_hash_entry *) 0 - 1; | |
4844 | dot_name[0] = '.'; | |
4845 | memcpy (dot_name + 1, name, len + 1); | |
4846 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4847 | bfd_release (abfd, dot_name); | |
4848 | return h; | |
4849 | } | |
4850 | ||
4851 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4852 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4853 | are made weak. This stops later archive searches from including an | |
4854 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4855 | prevents the linker complaining about undefined symbols. |
4856 | We also check and correct mismatched symbol visibility here. The | |
4857 | most restrictive visibility of the function descriptor and the | |
4858 | function entry symbol is used. */ | |
8387904d AM |
4859 | |
4860 | static bfd_boolean | |
b3fac117 | 4861 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4862 | { |
8387904d AM |
4863 | struct ppc_link_hash_table *htab; |
4864 | struct ppc_link_hash_entry *fdh; | |
4865 | ||
b3fac117 | 4866 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4867 | return TRUE; |
4868 | ||
b3fac117 AM |
4869 | if (eh->elf.root.type == bfd_link_hash_warning) |
4870 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4871 | |
b3fac117 AM |
4872 | if (eh->elf.root.root.string[0] != '.') |
4873 | abort (); | |
8387904d | 4874 | |
b3fac117 | 4875 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4876 | if (htab == NULL) |
4877 | return FALSE; | |
4878 | ||
b31867b6 AM |
4879 | fdh = lookup_fdh (eh, htab); |
4880 | if (fdh == NULL) | |
4881 | { | |
4882 | if (!info->relocatable | |
4883 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4884 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4885 | && eh->elf.ref_regular) | |
4886 | { | |
4887 | /* Make an undefweak function descriptor sym, which is enough to | |
4888 | pull in an --as-needed shared lib, but won't cause link | |
4889 | errors. Archives are handled elsewhere. */ | |
4890 | fdh = make_fdh (info, eh); | |
4891 | if (fdh == NULL) | |
4892 | return FALSE; | |
4893 | fdh->elf.ref_regular = 1; | |
4894 | } | |
bb700d78 | 4895 | } |
b31867b6 | 4896 | else |
8387904d | 4897 | { |
35b0ce59 AM |
4898 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4899 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4900 | if (entry_vis < descr_vis) | |
4901 | fdh->elf.other += entry_vis - descr_vis; | |
4902 | else if (entry_vis > descr_vis) | |
4903 | eh->elf.other += descr_vis - entry_vis; | |
4904 | ||
e87d886e AM |
4905 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4906 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4907 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4908 | { |
4909 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4910 | eh->was_undefined = 1; | |
4911 | htab->twiddled_syms = 1; | |
4912 | } | |
8387904d | 4913 | } |
99877b66 | 4914 | |
8387904d AM |
4915 | return TRUE; |
4916 | } | |
4917 | ||
b3fac117 AM |
4918 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4919 | ||
8387904d | 4920 | static bfd_boolean |
7d9616d7 | 4921 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4922 | { |
99877b66 | 4923 | struct ppc_link_hash_table *htab; |
b3fac117 | 4924 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4925 | |
0c8d6e5c | 4926 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4927 | return TRUE; |
4dfe6ac6 NC |
4928 | htab = ppc_hash_table (info); |
4929 | if (htab == NULL) | |
4930 | return FALSE; | |
35b0ce59 | 4931 | |
0c8d6e5c | 4932 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4933 | { |
4934 | p = &htab->dot_syms; | |
4935 | while ((eh = *p) != NULL) | |
4936 | { | |
4937 | *p = NULL; | |
1c865ab2 AM |
4938 | if (&eh->elf == htab->elf.hgot) |
4939 | ; | |
4940 | else if (htab->elf.hgot == NULL | |
4941 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4942 | htab->elf.hgot = &eh->elf; | |
4943 | else if (!add_symbol_adjust (eh, info)) | |
b3fac117 AM |
4944 | return FALSE; |
4945 | p = &eh->u.next_dot_sym; | |
4946 | } | |
4947 | } | |
4948 | ||
4949 | /* Clear the list for non-ppc64 input files. */ | |
4950 | p = &htab->dot_syms; | |
4951 | while ((eh = *p) != NULL) | |
4952 | { | |
4953 | *p = NULL; | |
4954 | p = &eh->u.next_dot_sym; | |
4955 | } | |
99877b66 AM |
4956 | |
4957 | /* We need to fix the undefs list for any syms we have twiddled to | |
4958 | undef_weak. */ | |
4959 | if (htab->twiddled_syms) | |
4960 | { | |
77cfaee6 | 4961 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4962 | htab->twiddled_syms = 0; |
4963 | } | |
b3fac117 | 4964 | return TRUE; |
8387904d AM |
4965 | } |
4966 | ||
97fed1c9 JJ |
4967 | /* Undo hash table changes when an --as-needed input file is determined |
4968 | not to be needed. */ | |
4969 | ||
4970 | static bfd_boolean | |
e5034e59 AM |
4971 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4972 | struct bfd_link_info *info, | |
4973 | enum notice_asneeded_action act) | |
97fed1c9 | 4974 | { |
e5034e59 AM |
4975 | if (act == notice_not_needed) |
4976 | { | |
4977 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4978 | |
e5034e59 AM |
4979 | if (htab == NULL) |
4980 | return FALSE; | |
4dfe6ac6 | 4981 | |
e5034e59 AM |
4982 | htab->dot_syms = NULL; |
4983 | } | |
4984 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4985 | } |
4986 | ||
aa374f67 AM |
4987 | /* If --just-symbols against a final linked binary, then assume we need |
4988 | toc adjusting stubs when calling functions defined there. */ | |
4989 | ||
4990 | static void | |
4991 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4992 | { | |
4993 | if ((sec->flags & SEC_CODE) != 0 | |
4994 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4995 | && is_ppc64_elf (sec->owner)) | |
4996 | { | |
2c3f079f AM |
4997 | if (abiversion (sec->owner) >= 2 |
4998 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4999 | sec->has_toc_reloc = 1; |
5000 | } | |
5001 | _bfd_elf_link_just_syms (sec, info); | |
5002 | } | |
5003 | ||
e054468f | 5004 | static struct plt_entry ** |
4ce794b7 AM |
5005 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5006 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5007 | { |
5008 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5009 | struct plt_entry **local_plt; |
f961d9dd | 5010 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5011 | |
5012 | if (local_got_ents == NULL) | |
5013 | { | |
5014 | bfd_size_type size = symtab_hdr->sh_info; | |
5015 | ||
e054468f AM |
5016 | size *= (sizeof (*local_got_ents) |
5017 | + sizeof (*local_plt) | |
5018 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5019 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5020 | if (local_got_ents == NULL) |
e054468f | 5021 | return NULL; |
411e1bfb AM |
5022 | elf_local_got_ents (abfd) = local_got_ents; |
5023 | } | |
5024 | ||
e054468f | 5025 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5026 | { |
5027 | struct got_entry *ent; | |
5028 | ||
5029 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5030 | if (ent->addend == r_addend |
5031 | && ent->owner == abfd | |
5032 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5033 | break; |
5034 | if (ent == NULL) | |
5035 | { | |
5036 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5037 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5038 | if (ent == NULL) |
5039 | return FALSE; | |
5040 | ent->next = local_got_ents[r_symndx]; | |
5041 | ent->addend = r_addend; | |
e717da7e | 5042 | ent->owner = abfd; |
411e1bfb | 5043 | ent->tls_type = tls_type; |
927be08e | 5044 | ent->is_indirect = FALSE; |
411e1bfb AM |
5045 | ent->got.refcount = 0; |
5046 | local_got_ents[r_symndx] = ent; | |
5047 | } | |
5048 | ent->got.refcount += 1; | |
5049 | } | |
5050 | ||
e054468f | 5051 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5052 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5053 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5054 | |
5055 | return local_plt + r_symndx; | |
65f38f15 AM |
5056 | } |
5057 | ||
411e1bfb | 5058 | static bfd_boolean |
e054468f | 5059 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5060 | { |
411e1bfb | 5061 | struct plt_entry *ent; |
1e2f5b6e | 5062 | |
e054468f | 5063 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5064 | if (ent->addend == addend) |
5065 | break; | |
5066 | if (ent == NULL) | |
1e2f5b6e | 5067 | { |
411e1bfb | 5068 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5069 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5070 | if (ent == NULL) |
5071 | return FALSE; | |
e054468f | 5072 | ent->next = *plist; |
411e1bfb AM |
5073 | ent->addend = addend; |
5074 | ent->plt.refcount = 0; | |
e054468f | 5075 | *plist = ent; |
1e2f5b6e | 5076 | } |
411e1bfb | 5077 | ent->plt.refcount += 1; |
b34976b6 | 5078 | return TRUE; |
1e2f5b6e AM |
5079 | } |
5080 | ||
e054468f AM |
5081 | static bfd_boolean |
5082 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5083 | { | |
5084 | return (r_type == R_PPC64_REL24 | |
5085 | || r_type == R_PPC64_REL14 | |
5086 | || r_type == R_PPC64_REL14_BRTAKEN | |
5087 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5088 | || r_type == R_PPC64_ADDR24 | |
5089 | || r_type == R_PPC64_ADDR14 | |
5090 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5091 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5092 | } | |
5093 | ||
5bd4f169 | 5094 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5095 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5096 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5097 | |
b34976b6 | 5098 | static bfd_boolean |
4ce794b7 AM |
5099 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5100 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5101 | { |
65f38f15 | 5102 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5103 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5104 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5105 | const Elf_Internal_Rela *rel; |
5106 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5107 | asection *sreloc; |
1e2f5b6e | 5108 | asection **opd_sym_map; |
3a71aa26 | 5109 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5110 | |
1049f94e | 5111 | if (info->relocatable) |
b34976b6 | 5112 | return TRUE; |
5bd4f169 | 5113 | |
680a3378 AM |
5114 | /* Don't do anything special with non-loaded, non-alloced sections. |
5115 | In particular, any relocs in such sections should not affect GOT | |
5116 | and PLT reference counting (ie. we don't allow them to create GOT | |
5117 | or PLT entries), there's no possibility or desire to optimize TLS | |
5118 | relocs, and there's not much point in propagating relocs to shared | |
5119 | libs that the dynamic linker won't relocate. */ | |
5120 | if ((sec->flags & SEC_ALLOC) == 0) | |
5121 | return TRUE; | |
5122 | ||
0c8d6e5c | 5123 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5124 | |
65f38f15 | 5125 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5126 | if (htab == NULL) |
5127 | return FALSE; | |
5128 | ||
3a71aa26 AM |
5129 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5130 | FALSE, FALSE, TRUE); | |
5131 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5132 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5133 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5134 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5135 | sreloc = NULL; |
1e2f5b6e | 5136 | opd_sym_map = NULL; |
70cc837d | 5137 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
5138 | { |
5139 | /* Garbage collection needs some extra help with .opd sections. | |
5140 | We don't want to necessarily keep everything referenced by | |
5141 | relocs in .opd, as that would keep all functions. Instead, | |
5142 | if we reference an .opd symbol (a function descriptor), we | |
5143 | want to keep the function code symbol's section. This is | |
5144 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 5145 | information about the associated function section. */ |
1e2f5b6e AM |
5146 | bfd_size_type amt; |
5147 | ||
ee67d69a AM |
5148 | if (abiversion (abfd) == 0) |
5149 | set_abiversion (abfd, 1); | |
5150 | else if (abiversion (abfd) == 2) | |
5151 | { | |
5152 | info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"), | |
5153 | abiversion (abfd)); | |
5154 | bfd_set_error (bfd_error_bad_value); | |
5155 | return FALSE; | |
5156 | } | |
74f0fb50 | 5157 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 5158 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 5159 | if (opd_sym_map == NULL) |
b34976b6 | 5160 | return FALSE; |
74f0fb50 | 5161 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
5162 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
5163 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 5164 | } |
5bd4f169 AM |
5165 | |
5166 | rel_end = relocs + sec->reloc_count; | |
5167 | for (rel = relocs; rel < rel_end; rel++) | |
5168 | { | |
5169 | unsigned long r_symndx; | |
5170 | struct elf_link_hash_entry *h; | |
04c9666a | 5171 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5172 | int tls_type; |
7c8fe5c4 | 5173 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5174 | struct plt_entry **ifunc; |
5bd4f169 AM |
5175 | |
5176 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5177 | if (r_symndx < symtab_hdr->sh_info) | |
5178 | h = NULL; | |
5179 | else | |
973a3492 L |
5180 | { |
5181 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5182 | h = elf_follow_link (h); |
81fbe831 AM |
5183 | |
5184 | /* PR15323, ref flags aren't set for references in the same | |
5185 | object. */ | |
5186 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5187 | |
5188 | if (h == htab->elf.hgot) | |
5189 | sec->has_toc_reloc = 1; | |
973a3492 | 5190 | } |
5bd4f169 | 5191 | |
727fc41e | 5192 | tls_type = 0; |
e054468f | 5193 | ifunc = NULL; |
25f23106 AM |
5194 | if (h != NULL) |
5195 | { | |
5196 | if (h->type == STT_GNU_IFUNC) | |
5197 | { | |
5198 | h->needs_plt = 1; | |
5199 | ifunc = &h->plt.plist; | |
5200 | } | |
5201 | } | |
5202 | else | |
5203 | { | |
5204 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5205 | abfd, r_symndx); | |
5206 | if (isym == NULL) | |
5207 | return FALSE; | |
5208 | ||
5209 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5210 | { | |
5211 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5212 | rel->r_addend, PLT_IFUNC); | |
5213 | if (ifunc == NULL) | |
5214 | return FALSE; | |
5215 | } | |
5216 | } | |
4ce794b7 | 5217 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5218 | if (is_branch_reloc (r_type)) |
5219 | { | |
5220 | if (h != NULL && (h == tga || h == dottga)) | |
5221 | { | |
5222 | if (rel != relocs | |
5223 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5224 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5225 | /* We have a new-style __tls_get_addr call with a marker | |
5226 | reloc. */ | |
5227 | ; | |
5228 | else | |
5229 | /* Mark this section as having an old-style call. */ | |
5230 | sec->has_tls_get_addr_call = 1; | |
5231 | } | |
727fc41e | 5232 | |
e054468f | 5233 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5234 | if (ifunc != NULL |
5235 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5236 | return FALSE; | |
5237 | } | |
727fc41e | 5238 | |
a33d1f77 | 5239 | switch (r_type) |
5bd4f169 | 5240 | { |
727fc41e AM |
5241 | case R_PPC64_TLSGD: |
5242 | case R_PPC64_TLSLD: | |
5243 | /* These special tls relocs tie a call to __tls_get_addr with | |
5244 | its parameter symbol. */ | |
5245 | break; | |
5246 | ||
411e1bfb AM |
5247 | case R_PPC64_GOT_TLSLD16: |
5248 | case R_PPC64_GOT_TLSLD16_LO: | |
5249 | case R_PPC64_GOT_TLSLD16_HI: | |
5250 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5251 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5252 | goto dogottls; |
5253 | ||
5254 | case R_PPC64_GOT_TLSGD16: | |
5255 | case R_PPC64_GOT_TLSGD16_LO: | |
5256 | case R_PPC64_GOT_TLSGD16_HI: | |
5257 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5258 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5259 | goto dogottls; |
5260 | ||
5261 | case R_PPC64_GOT_TPREL16_DS: | |
5262 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5263 | case R_PPC64_GOT_TPREL16_HI: | |
5264 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5265 | if (!info->executable) |
411e1bfb AM |
5266 | info->flags |= DF_STATIC_TLS; |
5267 | tls_type = TLS_TLS | TLS_TPREL; | |
5268 | goto dogottls; | |
5269 | ||
5270 | case R_PPC64_GOT_DTPREL16_DS: | |
5271 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5272 | case R_PPC64_GOT_DTPREL16_HI: | |
5273 | case R_PPC64_GOT_DTPREL16_HA: | |
5274 | tls_type = TLS_TLS | TLS_DTPREL; | |
5275 | dogottls: | |
5276 | sec->has_tls_reloc = 1; | |
5277 | /* Fall thru */ | |
5278 | ||
5bd4f169 | 5279 | case R_PPC64_GOT16: |
5bd4f169 | 5280 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5281 | case R_PPC64_GOT16_HA: |
5282 | case R_PPC64_GOT16_HI: | |
5283 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5284 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5285 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5286 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5287 | if (r_type == R_PPC64_GOT_TLSLD16 |
5288 | || r_type == R_PPC64_GOT_TLSGD16 | |
5289 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5290 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5291 | || r_type == R_PPC64_GOT16 | |
5292 | || r_type == R_PPC64_GOT16_DS) | |
5293 | { | |
5294 | htab->do_multi_toc = 1; | |
d77c8a4b | 5295 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5296 | } |
5297 | ||
e717da7e AM |
5298 | if (ppc64_elf_tdata (abfd)->got == NULL |
5299 | && !create_got_section (abfd, info)) | |
b34976b6 | 5300 | return FALSE; |
5bd4f169 AM |
5301 | |
5302 | if (h != NULL) | |
5303 | { | |
411e1bfb AM |
5304 | struct ppc_link_hash_entry *eh; |
5305 | struct got_entry *ent; | |
65f38f15 | 5306 | |
411e1bfb AM |
5307 | eh = (struct ppc_link_hash_entry *) h; |
5308 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5309 | if (ent->addend == rel->r_addend | |
e717da7e | 5310 | && ent->owner == abfd |
411e1bfb AM |
5311 | && ent->tls_type == tls_type) |
5312 | break; | |
5313 | if (ent == NULL) | |
5bd4f169 | 5314 | { |
411e1bfb | 5315 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5316 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5317 | if (ent == NULL) |
b34976b6 | 5318 | return FALSE; |
411e1bfb AM |
5319 | ent->next = eh->elf.got.glist; |
5320 | ent->addend = rel->r_addend; | |
e717da7e | 5321 | ent->owner = abfd; |
411e1bfb | 5322 | ent->tls_type = tls_type; |
927be08e | 5323 | ent->is_indirect = FALSE; |
411e1bfb AM |
5324 | ent->got.refcount = 0; |
5325 | eh->elf.got.glist = ent; | |
5bd4f169 | 5326 | } |
411e1bfb | 5327 | ent->got.refcount += 1; |
e7b938ca | 5328 | eh->tls_mask |= tls_type; |
5bd4f169 | 5329 | } |
411e1bfb AM |
5330 | else |
5331 | /* This is a global offset table entry for a local symbol. */ | |
5332 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5333 | rel->r_addend, tls_type)) | |
5334 | return FALSE; | |
a345bc8d AM |
5335 | |
5336 | /* We may also need a plt entry if the symbol turns out to be | |
5337 | an ifunc. */ | |
5338 | if (h != NULL && !info->shared && abiversion (abfd) == 2) | |
5339 | { | |
5340 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5341 | return FALSE; | |
5342 | } | |
5bd4f169 AM |
5343 | break; |
5344 | ||
5bd4f169 | 5345 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5346 | case R_PPC64_PLT16_HI: |
5347 | case R_PPC64_PLT16_LO: | |
5348 | case R_PPC64_PLT32: | |
5349 | case R_PPC64_PLT64: | |
5bd4f169 | 5350 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5351 | actually build the entry in adjust_dynamic_symbol, |
5352 | because this might be a case of linking PIC code without | |
5353 | linking in any dynamic objects, in which case we don't | |
5354 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5355 | if (h == NULL) |
5356 | { | |
5357 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5358 | table entry for a local symbol. */ |
5bd4f169 | 5359 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5360 | return FALSE; |
5bd4f169 | 5361 | } |
411e1bfb | 5362 | else |
e054468f AM |
5363 | { |
5364 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5365 | return FALSE; | |
5366 | h->needs_plt = 1; | |
5367 | if (h->root.root.string[0] == '.' | |
5368 | && h->root.root.string[1] != '\0') | |
5369 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5370 | } | |
5bd4f169 AM |
5371 | break; |
5372 | ||
5373 | /* The following relocations don't need to propagate the | |
5374 | relocation if linking a shared object since they are | |
5375 | section relative. */ | |
5376 | case R_PPC64_SECTOFF: | |
5377 | case R_PPC64_SECTOFF_LO: | |
5378 | case R_PPC64_SECTOFF_HI: | |
5379 | case R_PPC64_SECTOFF_HA: | |
5380 | case R_PPC64_SECTOFF_DS: | |
5381 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5382 | case R_PPC64_DTPREL16: |
5383 | case R_PPC64_DTPREL16_LO: | |
5384 | case R_PPC64_DTPREL16_HI: | |
5385 | case R_PPC64_DTPREL16_HA: | |
5386 | case R_PPC64_DTPREL16_DS: | |
5387 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5388 | case R_PPC64_DTPREL16_HIGH: |
5389 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5390 | case R_PPC64_DTPREL16_HIGHER: |
5391 | case R_PPC64_DTPREL16_HIGHERA: | |
5392 | case R_PPC64_DTPREL16_HIGHEST: | |
5393 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5394 | break; |
5395 | ||
ad8e1ba5 | 5396 | /* Nor do these. */ |
25f23106 AM |
5397 | case R_PPC64_REL16: |
5398 | case R_PPC64_REL16_LO: | |
5399 | case R_PPC64_REL16_HI: | |
5400 | case R_PPC64_REL16_HA: | |
5401 | break; | |
5402 | ||
ad8e1ba5 | 5403 | case R_PPC64_TOC16: |
33c0ec9d AM |
5404 | case R_PPC64_TOC16_DS: |
5405 | htab->do_multi_toc = 1; | |
d77c8a4b | 5406 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5407 | case R_PPC64_TOC16_LO: |
5408 | case R_PPC64_TOC16_HI: | |
5409 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5410 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5411 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5412 | break; |
5413 | ||
5bd4f169 AM |
5414 | /* This relocation describes the C++ object vtable hierarchy. |
5415 | Reconstruct it for later use during GC. */ | |
5416 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5417 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5418 | return FALSE; |
5bd4f169 AM |
5419 | break; |
5420 | ||
5421 | /* This relocation describes which C++ vtable entries are actually | |
5422 | used. Record for later use during GC. */ | |
5423 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5424 | BFD_ASSERT (h != NULL); |
5425 | if (h != NULL | |
5426 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5427 | return FALSE; |
5bd4f169 AM |
5428 | break; |
5429 | ||
721956f4 AM |
5430 | case R_PPC64_REL14: |
5431 | case R_PPC64_REL14_BRTAKEN: | |
5432 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5433 | { |
5434 | asection *dest = NULL; | |
5435 | ||
5436 | /* Heuristic: If jumping outside our section, chances are | |
5437 | we are going to need a stub. */ | |
5438 | if (h != NULL) | |
5439 | { | |
5440 | /* If the sym is weak it may be overridden later, so | |
5441 | don't assume we know where a weak sym lives. */ | |
5442 | if (h->root.type == bfd_link_hash_defined) | |
5443 | dest = h->root.u.def.section; | |
5444 | } | |
5445 | else | |
87d72d41 AM |
5446 | { |
5447 | Elf_Internal_Sym *isym; | |
5448 | ||
5449 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5450 | abfd, r_symndx); | |
5451 | if (isym == NULL) | |
5452 | return FALSE; | |
5453 | ||
5454 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5455 | } | |
5456 | ||
220c76dd | 5457 | if (dest != sec) |
7c8fe5c4 | 5458 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5459 | } |
721956f4 AM |
5460 | /* Fall through. */ |
5461 | ||
5d1634d7 | 5462 | case R_PPC64_REL24: |
e054468f | 5463 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5464 | { |
5465 | /* We may need a .plt entry if the function this reloc | |
5466 | refers to is in a shared lib. */ | |
e054468f | 5467 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5468 | return FALSE; |
e054468f AM |
5469 | h->needs_plt = 1; |
5470 | if (h->root.root.string[0] == '.' | |
5471 | && h->root.root.string[1] != '\0') | |
5472 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5473 | if (h == tga || h == dottga) |
411e1bfb | 5474 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5475 | } |
5476 | break; | |
5477 | ||
5478 | case R_PPC64_TPREL64: | |
5479 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5480 | if (!info->executable) |
411e1bfb AM |
5481 | info->flags |= DF_STATIC_TLS; |
5482 | goto dotlstoc; | |
5483 | ||
5484 | case R_PPC64_DTPMOD64: | |
5485 | if (rel + 1 < rel_end | |
5486 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5487 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5488 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5489 | else |
951fd09b | 5490 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5491 | goto dotlstoc; |
5492 | ||
5493 | case R_PPC64_DTPREL64: | |
5494 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5495 | if (rel != relocs | |
5496 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5497 | && rel[-1].r_offset == rel->r_offset - 8) | |
5498 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5499 | Don't mark with TLS_DTPREL. */ | |
5500 | goto dodyn; | |
5501 | ||
5502 | dotlstoc: | |
5503 | sec->has_tls_reloc = 1; | |
5504 | if (h != NULL) | |
5505 | { | |
5506 | struct ppc_link_hash_entry *eh; | |
5507 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5508 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5509 | } |
5510 | else | |
5511 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5512 | rel->r_addend, tls_type)) | |
5513 | return FALSE; | |
5514 | ||
7c8fe5c4 AM |
5515 | ppc64_sec = ppc64_elf_section_data (sec); |
5516 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5517 | { |
3a71aa26 AM |
5518 | bfd_size_type amt; |
5519 | ||
e7b938ca | 5520 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5521 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5522 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5523 | if (ppc64_sec->u.toc.symndx == NULL) | |
5524 | return FALSE; | |
5525 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5526 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5527 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5528 | return FALSE; |
7c8fe5c4 AM |
5529 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5530 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5531 | } |
5532 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5533 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5534 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5535 | |
5536 | /* Mark the second slot of a GD or LD entry. | |
5537 | -1 to indicate GD and -2 to indicate LD. */ | |
5538 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5539 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5540 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5541 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5542 | goto dodyn; |
5543 | ||
5544 | case R_PPC64_TPREL16: | |
5545 | case R_PPC64_TPREL16_LO: | |
5546 | case R_PPC64_TPREL16_HI: | |
5547 | case R_PPC64_TPREL16_HA: | |
5548 | case R_PPC64_TPREL16_DS: | |
5549 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5550 | case R_PPC64_TPREL16_HIGH: |
5551 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5552 | case R_PPC64_TPREL16_HIGHER: |
5553 | case R_PPC64_TPREL16_HIGHERA: | |
5554 | case R_PPC64_TPREL16_HIGHEST: | |
5555 | case R_PPC64_TPREL16_HIGHESTA: | |
5556 | if (info->shared) | |
5557 | { | |
1d483afe AM |
5558 | if (!info->executable) |
5559 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5560 | goto dodyn; |
5d1634d7 AM |
5561 | } |
5562 | break; | |
5563 | ||
e86ce104 | 5564 | case R_PPC64_ADDR64: |
1e2f5b6e | 5565 | if (opd_sym_map != NULL |
1e2f5b6e | 5566 | && rel + 1 < rel_end |
4ce794b7 | 5567 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5568 | { |
8387904d AM |
5569 | if (h != NULL) |
5570 | { | |
5571 | if (h->root.root.string[0] == '.' | |
5572 | && h->root.root.string[1] != 0 | |
b31867b6 | 5573 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5574 | ; |
5575 | else | |
5576 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5577 | } | |
5578 | else | |
5579 | { | |
5580 | asection *s; | |
87d72d41 | 5581 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5582 | |
87d72d41 AM |
5583 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5584 | abfd, r_symndx); | |
5585 | if (isym == NULL) | |
8387904d | 5586 | return FALSE; |
87d72d41 AM |
5587 | |
5588 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5589 | if (s != NULL && s != sec) | |
3f764659 | 5590 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5591 | } |
1e2f5b6e | 5592 | } |
e86ce104 AM |
5593 | /* Fall through. */ |
5594 | ||
65f38f15 AM |
5595 | case R_PPC64_ADDR16: |
5596 | case R_PPC64_ADDR16_DS: | |
5597 | case R_PPC64_ADDR16_HA: | |
5598 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5599 | case R_PPC64_ADDR16_HIGH: |
5600 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5601 | case R_PPC64_ADDR16_HIGHER: |
5602 | case R_PPC64_ADDR16_HIGHERA: | |
5603 | case R_PPC64_ADDR16_HIGHEST: | |
5604 | case R_PPC64_ADDR16_HIGHESTA: | |
5605 | case R_PPC64_ADDR16_LO: | |
5606 | case R_PPC64_ADDR16_LO_DS: | |
a345bc8d AM |
5607 | if (h != NULL && !info->shared && abiversion (abfd) == 2 |
5608 | && rel->r_addend == 0) | |
5609 | { | |
5610 | /* We may need a .plt entry if this reloc refers to a | |
5611 | function in a shared lib. */ | |
5612 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5613 | return FALSE; | |
5614 | h->pointer_equality_needed = 1; | |
5615 | } | |
5616 | /* Fall through. */ | |
5617 | ||
5618 | case R_PPC64_REL30: | |
5619 | case R_PPC64_REL32: | |
5620 | case R_PPC64_REL64: | |
5621 | case R_PPC64_ADDR14: | |
5622 | case R_PPC64_ADDR14_BRNTAKEN: | |
5623 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5624 | case R_PPC64_ADDR24: |
65f38f15 | 5625 | case R_PPC64_ADDR32: |
65f38f15 AM |
5626 | case R_PPC64_UADDR16: |
5627 | case R_PPC64_UADDR32: | |
5628 | case R_PPC64_UADDR64: | |
5bd4f169 | 5629 | case R_PPC64_TOC: |
81848ca0 AM |
5630 | if (h != NULL && !info->shared) |
5631 | /* We may need a copy reloc. */ | |
f5385ebf | 5632 | h->non_got_ref = 1; |
81848ca0 | 5633 | |
41bd81ab | 5634 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5635 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5636 | break; |
e86ce104 | 5637 | |
65f38f15 AM |
5638 | /* If we are creating a shared library, and this is a reloc |
5639 | against a global symbol, or a non PC relative reloc | |
5640 | against a local symbol, then we need to copy the reloc | |
5641 | into the shared library. However, if we are linking with | |
5642 | -Bsymbolic, we do not need to copy a reloc against a | |
5643 | global symbol which is defined in an object we are | |
5644 | including in the link (i.e., DEF_REGULAR is set). At | |
5645 | this point we have not seen all the input files, so it is | |
5646 | possible that DEF_REGULAR is not set now but will be set | |
5647 | later (it is never cleared). In case of a weak definition, | |
5648 | DEF_REGULAR may be cleared later by a strong definition in | |
5649 | a shared library. We account for that possibility below by | |
f4656909 | 5650 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5651 | table entry. A similar situation occurs when creating |
5652 | shared libraries and symbol visibility changes render the | |
5653 | symbol local. | |
5654 | ||
5655 | If on the other hand, we are creating an executable, we | |
5656 | may need to keep relocations for symbols satisfied by a | |
5657 | dynamic library if we manage to avoid copy relocs for the | |
5658 | symbol. */ | |
411e1bfb | 5659 | dodyn: |
65f38f15 | 5660 | if ((info->shared |
1d483afe | 5661 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5662 | || (h != NULL |
198f1157 | 5663 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5664 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5665 | || !h->def_regular)))) |
f4656909 AM |
5666 | || (ELIMINATE_COPY_RELOCS |
5667 | && !info->shared | |
65f38f15 AM |
5668 | && h != NULL |
5669 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5670 | || !h->def_regular)) |
5671 | || (!info->shared | |
5672 | && ifunc != NULL)) | |
5bd4f169 | 5673 | { |
65f38f15 AM |
5674 | /* We must copy these reloc types into the output file. |
5675 | Create a reloc section in dynobj and make room for | |
5676 | this reloc. */ | |
5bd4f169 AM |
5677 | if (sreloc == NULL) |
5678 | { | |
83bac4b0 NC |
5679 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5680 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5681 | |
5bd4f169 | 5682 | if (sreloc == NULL) |
83bac4b0 | 5683 | return FALSE; |
5bd4f169 AM |
5684 | } |
5685 | ||
65f38f15 AM |
5686 | /* If this is a global symbol, we count the number of |
5687 | relocations we need for this symbol. */ | |
5688 | if (h != NULL) | |
5689 | { | |
19e08130 AM |
5690 | struct elf_dyn_relocs *p; |
5691 | struct elf_dyn_relocs **head; | |
5692 | ||
ec338859 | 5693 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5694 | p = *head; |
5695 | if (p == NULL || p->sec != sec) | |
5696 | { | |
5697 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5698 | if (p == NULL) | |
5699 | return FALSE; | |
5700 | p->next = *head; | |
5701 | *head = p; | |
5702 | p->sec = sec; | |
5703 | p->count = 0; | |
5704 | p->pc_count = 0; | |
5705 | } | |
5706 | p->count += 1; | |
5707 | if (!must_be_dyn_reloc (info, r_type)) | |
5708 | p->pc_count += 1; | |
65f38f15 AM |
5709 | } |
5710 | else | |
5711 | { | |
ec338859 AM |
5712 | /* Track dynamic relocs needed for local syms too. |
5713 | We really need local syms available to do this | |
5714 | easily. Oh well. */ | |
19e08130 AM |
5715 | struct ppc_dyn_relocs *p; |
5716 | struct ppc_dyn_relocs **head; | |
5717 | bfd_boolean is_ifunc; | |
ec338859 | 5718 | asection *s; |
6edfbbad | 5719 | void *vpp; |
87d72d41 | 5720 | Elf_Internal_Sym *isym; |
6edfbbad | 5721 | |
87d72d41 AM |
5722 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5723 | abfd, r_symndx); | |
5724 | if (isym == NULL) | |
b34976b6 | 5725 | return FALSE; |
ec338859 | 5726 | |
87d72d41 AM |
5727 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5728 | if (s == NULL) | |
5729 | s = sec; | |
5730 | ||
6edfbbad | 5731 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5732 | head = (struct ppc_dyn_relocs **) vpp; |
5733 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5734 | p = *head; | |
5735 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5736 | p = p->next; | |
5737 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5738 | { | |
5739 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5740 | if (p == NULL) | |
5741 | return FALSE; | |
5742 | p->next = *head; | |
5743 | *head = p; | |
5744 | p->sec = sec; | |
5745 | p->ifunc = is_ifunc; | |
5746 | p->count = 0; | |
5747 | } | |
5748 | p->count += 1; | |
ec338859 | 5749 | } |
65f38f15 | 5750 | } |
5bd4f169 | 5751 | break; |
65f38f15 AM |
5752 | |
5753 | default: | |
96e0dda4 | 5754 | break; |
5bd4f169 AM |
5755 | } |
5756 | } | |
5757 | ||
b34976b6 | 5758 | return TRUE; |
5bd4f169 AM |
5759 | } |
5760 | ||
ee67d69a AM |
5761 | /* Merge backend specific data from an object file to the output |
5762 | object file when linking. */ | |
5763 | ||
5764 | static bfd_boolean | |
5765 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5766 | { | |
5767 | unsigned long iflags, oflags; | |
5768 | ||
5769 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5770 | return TRUE; | |
5771 | ||
5772 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5773 | return TRUE; | |
5774 | ||
5775 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5776 | return FALSE; | |
5777 | ||
5778 | iflags = elf_elfheader (ibfd)->e_flags; | |
5779 | oflags = elf_elfheader (obfd)->e_flags; | |
5780 | ||
5781 | if (!elf_flags_init (obfd) || oflags == 0) | |
5782 | { | |
5783 | elf_flags_init (obfd) = TRUE; | |
5784 | elf_elfheader (obfd)->e_flags = iflags; | |
5785 | } | |
5786 | else if (iflags == oflags || iflags == 0) | |
5787 | ; | |
5788 | else if (iflags & ~EF_PPC64_ABI) | |
5789 | { | |
5790 | (*_bfd_error_handler) | |
5791 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5792 | bfd_set_error (bfd_error_bad_value); | |
5793 | return FALSE; | |
5794 | } | |
5795 | else | |
5796 | { | |
5797 | (*_bfd_error_handler) | |
5798 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5799 | ibfd, iflags, oflags); | |
5800 | bfd_set_error (bfd_error_bad_value); | |
5801 | return FALSE; | |
5802 | } | |
5803 | ||
5804 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5805 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5806 | ||
5807 | return TRUE; | |
5808 | } | |
5809 | ||
5810 | static bfd_boolean | |
5811 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5812 | { | |
5813 | /* Print normal ELF private data. */ | |
5814 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5815 | ||
5816 | if (elf_elfheader (abfd)->e_flags != 0) | |
5817 | { | |
5818 | FILE *file = ptr; | |
5819 | ||
5820 | /* xgettext:c-format */ | |
5821 | fprintf (file, _("private flags = 0x%lx:"), | |
5822 | elf_elfheader (abfd)->e_flags); | |
5823 | ||
5824 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5825 | fprintf (file, _(" [abiv%ld]"), | |
5826 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5827 | fputc ('\n', file); | |
5828 | } | |
5829 | ||
5830 | return TRUE; | |
5831 | } | |
5832 | ||
8387904d AM |
5833 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5834 | of the code entry point, and its section. */ | |
5835 | ||
5836 | static bfd_vma | |
5837 | opd_entry_value (asection *opd_sec, | |
5838 | bfd_vma offset, | |
5839 | asection **code_sec, | |
aef36ac1 AM |
5840 | bfd_vma *code_off, |
5841 | bfd_boolean in_code_sec) | |
8387904d AM |
5842 | { |
5843 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5844 | Elf_Internal_Rela *relocs; |
8387904d | 5845 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5846 | bfd_vma val; |
8387904d | 5847 | |
9f296da3 AM |
5848 | /* No relocs implies we are linking a --just-symbols object, or looking |
5849 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5850 | if (opd_sec->reloc_count == 0) |
5851 | { | |
729eabd5 | 5852 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5853 | |
729eabd5 AM |
5854 | if (contents == NULL) |
5855 | { | |
5856 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5857 | return (bfd_vma) -1; | |
5858 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5859 | } | |
ee1e4ede | 5860 | |
729eabd5 | 5861 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5862 | if (code_sec != NULL) |
5863 | { | |
5864 | asection *sec, *likely = NULL; | |
ee1e4ede | 5865 | |
aef36ac1 | 5866 | if (in_code_sec) |
4b85d634 | 5867 | { |
aef36ac1 AM |
5868 | sec = *code_sec; |
5869 | if (sec->vma <= val | |
5870 | && val < sec->vma + sec->size) | |
5871 | likely = sec; | |
5872 | else | |
5873 | val = -1; | |
5874 | } | |
5875 | else | |
5876 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5877 | if (sec->vma <= val | |
5878 | && (sec->flags & SEC_LOAD) != 0 | |
5879 | && (sec->flags & SEC_ALLOC) != 0) | |
5880 | likely = sec; | |
5881 | if (likely != NULL) | |
5882 | { | |
5883 | *code_sec = likely; | |
5884 | if (code_off != NULL) | |
5885 | *code_off = val - likely->vma; | |
4b85d634 AM |
5886 | } |
5887 | } | |
aef36ac1 | 5888 | return val; |
4b85d634 AM |
5889 | } |
5890 | ||
0c8d6e5c | 5891 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5892 | |
729eabd5 | 5893 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5894 | if (relocs == NULL) |
5895 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5896 | |
8387904d | 5897 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5898 | lo = relocs; |
8387904d AM |
5899 | BFD_ASSERT (lo != NULL); |
5900 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5901 | val = (bfd_vma) -1; |
8387904d AM |
5902 | while (lo < hi) |
5903 | { | |
5904 | look = lo + (hi - lo) / 2; | |
5905 | if (look->r_offset < offset) | |
5906 | lo = look + 1; | |
5907 | else if (look->r_offset > offset) | |
5908 | hi = look; | |
5909 | else | |
5910 | { | |
0ffa91dd NC |
5911 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5912 | ||
8387904d AM |
5913 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5914 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5915 | { | |
5916 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5917 | asection *sec; |
5918 | ||
62599110 AM |
5919 | if (symndx < symtab_hdr->sh_info |
5920 | || elf_sym_hashes (opd_bfd) == NULL) | |
8387904d AM |
5921 | { |
5922 | Elf_Internal_Sym *sym; | |
5923 | ||
5924 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5925 | if (sym == NULL) | |
5926 | { | |
62599110 AM |
5927 | size_t symcnt = symtab_hdr->sh_info; |
5928 | if (elf_sym_hashes (opd_bfd) == NULL) | |
5929 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
5930 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
8387904d AM |
5931 | 0, NULL, NULL, NULL); |
5932 | if (sym == NULL) | |
645ea6a9 | 5933 | break; |
8387904d AM |
5934 | symtab_hdr->contents = (bfd_byte *) sym; |
5935 | } | |
5936 | ||
5937 | sym += symndx; | |
5938 | val = sym->st_value; | |
cb33740c | 5939 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5940 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5941 | } | |
5942 | else | |
5943 | { | |
5944 | struct elf_link_hash_entry **sym_hashes; | |
5945 | struct elf_link_hash_entry *rh; | |
5946 | ||
5947 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5948 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5949 | if (rh != NULL) |
5950 | { | |
5951 | rh = elf_follow_link (rh); | |
5952 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5953 | || rh->root.type == bfd_link_hash_defweak); | |
5954 | val = rh->root.u.def.value; | |
5955 | sec = rh->root.u.def.section; | |
5956 | } | |
5957 | else | |
5958 | { | |
5959 | /* Handle the odd case where we can be called | |
5960 | during bfd_elf_link_add_symbols before the | |
5961 | symbol hashes have been fully populated. */ | |
5962 | Elf_Internal_Sym *sym; | |
5963 | ||
5964 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
5965 | symndx, NULL, NULL, NULL); | |
5966 | if (sym == NULL) | |
5967 | break; | |
5968 | ||
5969 | val = sym->st_value; | |
5970 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5971 | free (sym); | |
5972 | } | |
8387904d AM |
5973 | } |
5974 | val += look->r_addend; | |
5975 | if (code_off != NULL) | |
5976 | *code_off = val; | |
5977 | if (code_sec != NULL) | |
aef36ac1 AM |
5978 | { |
5979 | if (in_code_sec && *code_sec != sec) | |
5980 | return -1; | |
5981 | else | |
5982 | *code_sec = sec; | |
5983 | } | |
8387904d AM |
5984 | if (sec != NULL && sec->output_section != NULL) |
5985 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5986 | } |
5987 | break; | |
5988 | } | |
5989 | } | |
645ea6a9 | 5990 | |
645ea6a9 | 5991 | return val; |
8387904d AM |
5992 | } |
5993 | ||
aef36ac1 AM |
5994 | /* If the ELF symbol SYM might be a function in SEC, return the |
5995 | function size and set *CODE_OFF to the function's entry point, | |
5996 | otherwise return zero. */ | |
9f296da3 | 5997 | |
aef36ac1 AM |
5998 | static bfd_size_type |
5999 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6000 | bfd_vma *code_off) | |
9f296da3 | 6001 | { |
aef36ac1 AM |
6002 | bfd_size_type size; |
6003 | ||
6004 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6005 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6006 | return 0; | |
6007 | ||
6008 | size = 0; | |
6009 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6010 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6011 | ||
6012 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6013 | { |
aef36ac1 AM |
6014 | if (opd_entry_value (sym->section, sym->value, |
6015 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
6016 | return 0; | |
6017 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6018 | symbol. This size has nothing to do with the code size of the | |
6019 | function, which is what we're supposed to return, but the | |
6020 | code size isn't available without looking up the dot-sym. | |
6021 | However, doing that would be a waste of time particularly | |
6022 | since elf_find_function will look at the dot-sym anyway. | |
6023 | Now, elf_find_function will keep the largest size of any | |
6024 | function sym found at the code address of interest, so return | |
6025 | 1 here to avoid it incorrectly caching a larger function size | |
6026 | for a small function. This does mean we return the wrong | |
6027 | size for a new-ABI function of size 24, but all that does is | |
6028 | disable caching for such functions. */ | |
6029 | if (size == 24) | |
6030 | size = 1; | |
9f296da3 | 6031 | } |
aef36ac1 AM |
6032 | else |
6033 | { | |
6034 | if (sym->section != sec) | |
6035 | return 0; | |
6036 | *code_off = sym->value; | |
6037 | } | |
6038 | if (size == 0) | |
6039 | size = 1; | |
6040 | return size; | |
9f296da3 AM |
6041 | } |
6042 | ||
854b41e7 AM |
6043 | /* Return true if symbol is defined in a regular object file. */ |
6044 | ||
6045 | static bfd_boolean | |
6046 | is_static_defined (struct elf_link_hash_entry *h) | |
6047 | { | |
6048 | return ((h->root.type == bfd_link_hash_defined | |
6049 | || h->root.type == bfd_link_hash_defweak) | |
6050 | && h->root.u.def.section != NULL | |
6051 | && h->root.u.def.section->output_section != NULL); | |
6052 | } | |
6053 | ||
b31867b6 AM |
6054 | /* If FDH is a function descriptor symbol, return the associated code |
6055 | entry symbol if it is defined. Return NULL otherwise. */ | |
6056 | ||
6057 | static struct ppc_link_hash_entry * | |
6058 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6059 | { | |
6060 | if (fdh->is_func_descriptor) | |
6061 | { | |
6062 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6063 | if (fh->elf.root.type == bfd_link_hash_defined | |
6064 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6065 | return fh; | |
6066 | } | |
6067 | return NULL; | |
6068 | } | |
6069 | ||
6070 | /* If FH is a function code entry symbol, return the associated | |
6071 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6072 | ||
6073 | static struct ppc_link_hash_entry * | |
6074 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6075 | { | |
6076 | if (fh->oh != NULL | |
6077 | && fh->oh->is_func_descriptor) | |
6078 | { | |
6079 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6080 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6081 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6082 | return fdh; | |
6083 | } | |
6084 | return NULL; | |
6085 | } | |
6086 | ||
74f0fb50 AM |
6087 | /* Mark all our entry sym sections, both opd and code section. */ |
6088 | ||
6089 | static void | |
6090 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6091 | { | |
6092 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6093 | struct bfd_sym_chain *sym; | |
6094 | ||
4dfe6ac6 NC |
6095 | if (htab == NULL) |
6096 | return; | |
6097 | ||
74f0fb50 AM |
6098 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6099 | { | |
b31867b6 | 6100 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6101 | asection *sec; |
6102 | ||
6103 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6104 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6105 | if (eh == NULL) |
6106 | continue; | |
6107 | if (eh->elf.root.type != bfd_link_hash_defined | |
6108 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6109 | continue; | |
6110 | ||
b31867b6 AM |
6111 | fh = defined_code_entry (eh); |
6112 | if (fh != NULL) | |
74f0fb50 | 6113 | { |
b31867b6 | 6114 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6115 | sec->flags |= SEC_KEEP; |
6116 | } | |
6117 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6118 | && opd_entry_value (eh->elf.root.u.def.section, | |
6119 | eh->elf.root.u.def.value, | |
aef36ac1 | 6120 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6121 | sec->flags |= SEC_KEEP; |
6122 | ||
6123 | sec = eh->elf.root.u.def.section; | |
6124 | sec->flags |= SEC_KEEP; | |
6125 | } | |
6126 | } | |
6127 | ||
64d03ab5 AM |
6128 | /* Mark sections containing dynamically referenced symbols. When |
6129 | building shared libraries, we must assume that any visible symbol is | |
6130 | referenced. */ | |
6131 | ||
6132 | static bfd_boolean | |
6133 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6134 | { | |
6135 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6136 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6137 | struct ppc_link_hash_entry *fdh; |
b407645f | 6138 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6139 | |
64d03ab5 | 6140 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6141 | fdh = defined_func_desc (eh); |
6142 | if (fdh != NULL) | |
6143 | eh = fdh; | |
64d03ab5 AM |
6144 | |
6145 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6146 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6147 | && (eh->elf.ref_dynamic | |
b407645f | 6148 | || (eh->elf.def_regular |
64d03ab5 | 6149 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6150 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
b407645f AM |
6151 | && (!info->executable |
6152 | || info->export_dynamic | |
6153 | || (eh->elf.dynamic | |
6154 | && d != NULL | |
6155 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6156 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6157 | || !bfd_hide_sym_by_version (info->version_info, | |
6158 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6159 | { |
6160 | asection *code_sec; | |
b31867b6 | 6161 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6162 | |
6163 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6164 | ||
6165 | /* Function descriptor syms cause the associated | |
6166 | function code sym section to be marked. */ | |
b31867b6 AM |
6167 | fh = defined_code_entry (eh); |
6168 | if (fh != NULL) | |
6169 | { | |
6170 | code_sec = fh->elf.root.u.def.section; | |
6171 | code_sec->flags |= SEC_KEEP; | |
6172 | } | |
64d03ab5 AM |
6173 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6174 | && opd_entry_value (eh->elf.root.u.def.section, | |
6175 | eh->elf.root.u.def.value, | |
aef36ac1 | 6176 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6177 | code_sec->flags |= SEC_KEEP; |
6178 | } | |
6179 | ||
6180 | return TRUE; | |
6181 | } | |
6182 | ||
5bd4f169 AM |
6183 | /* Return the section that should be marked against GC for a given |
6184 | relocation. */ | |
6185 | ||
6186 | static asection * | |
4ce794b7 | 6187 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6188 | struct bfd_link_info *info, |
4ce794b7 AM |
6189 | Elf_Internal_Rela *rel, |
6190 | struct elf_link_hash_entry *h, | |
6191 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6192 | { |
ccfa59ea AM |
6193 | asection *rsec; |
6194 | ||
ccfa59ea AM |
6195 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6196 | function sections, as all functions are referenced in .opd. */ | |
6197 | rsec = NULL; | |
6198 | if (get_opd_info (sec) != NULL) | |
6199 | return rsec; | |
1e2f5b6e | 6200 | |
5bd4f169 AM |
6201 | if (h != NULL) |
6202 | { | |
04c9666a | 6203 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6204 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6205 | |
4ce794b7 | 6206 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6207 | switch (r_type) |
5bd4f169 AM |
6208 | { |
6209 | case R_PPC64_GNU_VTINHERIT: | |
6210 | case R_PPC64_GNU_VTENTRY: | |
6211 | break; | |
6212 | ||
6213 | default: | |
6214 | switch (h->root.type) | |
6215 | { | |
6216 | case bfd_link_hash_defined: | |
6217 | case bfd_link_hash_defweak: | |
ccfa59ea | 6218 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6219 | fdh = defined_func_desc (eh); |
6220 | if (fdh != NULL) | |
6221 | eh = fdh; | |
1e2f5b6e AM |
6222 | |
6223 | /* Function descriptor syms cause the associated | |
6224 | function code sym section to be marked. */ | |
b31867b6 AM |
6225 | fh = defined_code_entry (eh); |
6226 | if (fh != NULL) | |
ccfa59ea AM |
6227 | { |
6228 | /* They also mark their opd section. */ | |
74f0fb50 | 6229 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6230 | |
b31867b6 | 6231 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6232 | } |
8387904d AM |
6233 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6234 | && opd_entry_value (eh->elf.root.u.def.section, | |
6235 | eh->elf.root.u.def.value, | |
aef36ac1 | 6236 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6237 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6238 | else |
1e2f5b6e AM |
6239 | rsec = h->root.u.def.section; |
6240 | break; | |
5bd4f169 AM |
6241 | |
6242 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6243 | rsec = h->root.u.c.p->section; |
6244 | break; | |
5bd4f169 AM |
6245 | |
6246 | default: | |
fb34365b | 6247 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6248 | } |
6249 | } | |
6250 | } | |
6251 | else | |
6252 | { | |
74f0fb50 | 6253 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6254 | |
6255 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6256 | opd = get_opd_info (rsec); |
6257 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6258 | { |
74f0fb50 | 6259 | rsec->gc_mark = 1; |
ccfa59ea | 6260 | |
74f0fb50 | 6261 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 6262 | } |
5bd4f169 AM |
6263 | } |
6264 | ||
1e2f5b6e | 6265 | return rsec; |
5bd4f169 AM |
6266 | } |
6267 | ||
65f38f15 AM |
6268 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6269 | section being removed. */ | |
5bd4f169 | 6270 | |
b34976b6 | 6271 | static bfd_boolean |
4ce794b7 AM |
6272 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6273 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6274 | { |
411e1bfb | 6275 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6276 | Elf_Internal_Shdr *symtab_hdr; |
6277 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6278 | struct got_entry **local_got_ents; |
5bd4f169 | 6279 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6280 | |
7dda2462 TG |
6281 | if (info->relocatable) |
6282 | return TRUE; | |
6283 | ||
680a3378 AM |
6284 | if ((sec->flags & SEC_ALLOC) == 0) |
6285 | return TRUE; | |
6286 | ||
ec338859 AM |
6287 | elf_section_data (sec)->local_dynrel = NULL; |
6288 | ||
411e1bfb | 6289 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6290 | if (htab == NULL) |
6291 | return FALSE; | |
6292 | ||
0ffa91dd | 6293 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6294 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6295 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6296 | |
6297 | relend = relocs + sec->reloc_count; | |
6298 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6299 | { |
6300 | unsigned long r_symndx; | |
04c9666a | 6301 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6302 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6303 | unsigned char tls_type = 0; |
5bd4f169 | 6304 | |
a33d1f77 | 6305 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6306 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6307 | if (r_symndx >= symtab_hdr->sh_info) |
6308 | { | |
6309 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6310 | struct elf_dyn_relocs **pp; |
6311 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6312 | |
6313 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6314 | h = elf_follow_link (h); |
58ac9f71 AM |
6315 | eh = (struct ppc_link_hash_entry *) h; |
6316 | ||
6317 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6318 | if (p->sec == sec) | |
6319 | { | |
6320 | /* Everything must go for SEC. */ | |
6321 | *pp = p->next; | |
6322 | break; | |
6323 | } | |
6324 | } | |
6325 | ||
e054468f AM |
6326 | if (is_branch_reloc (r_type)) |
6327 | { | |
6328 | struct plt_entry **ifunc = NULL; | |
6329 | if (h != NULL) | |
6330 | { | |
6331 | if (h->type == STT_GNU_IFUNC) | |
6332 | ifunc = &h->plt.plist; | |
6333 | } | |
6334 | else if (local_got_ents != NULL) | |
6335 | { | |
6336 | struct plt_entry **local_plt = (struct plt_entry **) | |
6337 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6338 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6339 | (local_plt + symtab_hdr->sh_info); |
6340 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6341 | ifunc = local_plt + r_symndx; | |
6342 | } | |
6343 | if (ifunc != NULL) | |
6344 | { | |
6345 | struct plt_entry *ent; | |
6346 | ||
6347 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6348 | if (ent->addend == rel->r_addend) | |
6349 | break; | |
6350 | if (ent == NULL) | |
6351 | abort (); | |
6352 | if (ent->plt.refcount > 0) | |
6353 | ent->plt.refcount -= 1; | |
6354 | continue; | |
6355 | } | |
6356 | } | |
6357 | ||
a33d1f77 AM |
6358 | switch (r_type) |
6359 | { | |
411e1bfb AM |
6360 | case R_PPC64_GOT_TLSLD16: |
6361 | case R_PPC64_GOT_TLSLD16_LO: | |
6362 | case R_PPC64_GOT_TLSLD16_HI: | |
6363 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6364 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6365 | goto dogot; |
6366 | ||
6367 | case R_PPC64_GOT_TLSGD16: | |
6368 | case R_PPC64_GOT_TLSGD16_LO: | |
6369 | case R_PPC64_GOT_TLSGD16_HI: | |
6370 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6371 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6372 | goto dogot; |
6373 | ||
6374 | case R_PPC64_GOT_TPREL16_DS: | |
6375 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6376 | case R_PPC64_GOT_TPREL16_HI: | |
6377 | case R_PPC64_GOT_TPREL16_HA: | |
6378 | tls_type = TLS_TLS | TLS_TPREL; | |
6379 | goto dogot; | |
6380 | ||
6381 | case R_PPC64_GOT_DTPREL16_DS: | |
6382 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6383 | case R_PPC64_GOT_DTPREL16_HI: | |
6384 | case R_PPC64_GOT_DTPREL16_HA: | |
6385 | tls_type = TLS_TLS | TLS_DTPREL; | |
6386 | goto dogot; | |
6387 | ||
a33d1f77 AM |
6388 | case R_PPC64_GOT16: |
6389 | case R_PPC64_GOT16_DS: | |
6390 | case R_PPC64_GOT16_HA: | |
6391 | case R_PPC64_GOT16_HI: | |
6392 | case R_PPC64_GOT16_LO: | |
6393 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6394 | dogot: |
6395 | { | |
6396 | struct got_entry *ent; | |
6397 | ||
58ac9f71 AM |
6398 | if (h != NULL) |
6399 | ent = h->got.glist; | |
411e1bfb AM |
6400 | else |
6401 | ent = local_got_ents[r_symndx]; | |
6402 | ||
6403 | for (; ent != NULL; ent = ent->next) | |
6404 | if (ent->addend == rel->r_addend | |
e717da7e | 6405 | && ent->owner == abfd |
411e1bfb AM |
6406 | && ent->tls_type == tls_type) |
6407 | break; | |
6408 | if (ent == NULL) | |
6409 | abort (); | |
6410 | if (ent->got.refcount > 0) | |
6411 | ent->got.refcount -= 1; | |
6412 | } | |
a33d1f77 | 6413 | break; |
65f38f15 | 6414 | |
a33d1f77 AM |
6415 | case R_PPC64_PLT16_HA: |
6416 | case R_PPC64_PLT16_HI: | |
6417 | case R_PPC64_PLT16_LO: | |
6418 | case R_PPC64_PLT32: | |
6419 | case R_PPC64_PLT64: | |
721956f4 AM |
6420 | case R_PPC64_REL14: |
6421 | case R_PPC64_REL14_BRNTAKEN: | |
6422 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6423 | case R_PPC64_REL24: |
58ac9f71 | 6424 | if (h != NULL) |
5d1634d7 | 6425 | { |
411e1bfb AM |
6426 | struct plt_entry *ent; |
6427 | ||
411e1bfb AM |
6428 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6429 | if (ent->addend == rel->r_addend) | |
6430 | break; | |
7c6c1722 | 6431 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6432 | ent->plt.refcount -= 1; |
5d1634d7 | 6433 | } |
e86ce104 | 6434 | break; |
5d1634d7 | 6435 | |
a33d1f77 AM |
6436 | default: |
6437 | break; | |
6438 | } | |
6439 | } | |
b34976b6 | 6440 | return TRUE; |
5bd4f169 AM |
6441 | } |
6442 | ||
deb0e272 AM |
6443 | /* The maximum size of .sfpr. */ |
6444 | #define SFPR_MAX (218*4) | |
6445 | ||
6446 | struct sfpr_def_parms | |
6447 | { | |
699733f6 AM |
6448 | const char name[12]; |
6449 | unsigned char lo, hi; | |
deb0e272 AM |
6450 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6451 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6452 | }; | |
6453 | ||
6454 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6455 | ||
4dfe6ac6 | 6456 | static bfd_boolean |
deb0e272 AM |
6457 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6458 | { | |
6459 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6460 | unsigned int i; | |
6461 | size_t len = strlen (parm->name); | |
6462 | bfd_boolean writing = FALSE; | |
699733f6 | 6463 | char sym[16]; |
deb0e272 | 6464 | |
4dfe6ac6 NC |
6465 | if (htab == NULL) |
6466 | return FALSE; | |
6467 | ||
deb0e272 AM |
6468 | memcpy (sym, parm->name, len); |
6469 | sym[len + 2] = 0; | |
6470 | ||
6471 | for (i = parm->lo; i <= parm->hi; i++) | |
6472 | { | |
6473 | struct elf_link_hash_entry *h; | |
6474 | ||
6475 | sym[len + 0] = i / 10 + '0'; | |
6476 | sym[len + 1] = i % 10 + '0'; | |
6477 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6478 | if (h != NULL | |
f5385ebf | 6479 | && !h->def_regular) |
deb0e272 AM |
6480 | { |
6481 | h->root.type = bfd_link_hash_defined; | |
6482 | h->root.u.def.section = htab->sfpr; | |
6483 | h->root.u.def.value = htab->sfpr->size; | |
6484 | h->type = STT_FUNC; | |
f5385ebf | 6485 | h->def_regular = 1; |
deb0e272 AM |
6486 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6487 | writing = TRUE; | |
6488 | if (htab->sfpr->contents == NULL) | |
6489 | { | |
6490 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6491 | if (htab->sfpr->contents == NULL) | |
6492 | return FALSE; | |
6493 | } | |
6494 | } | |
6495 | if (writing) | |
6496 | { | |
6497 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6498 | if (i != parm->hi) | |
6499 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6500 | else | |
6501 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6502 | htab->sfpr->size = p - htab->sfpr->contents; | |
6503 | } | |
6504 | } | |
6505 | ||
6506 | return TRUE; | |
6507 | } | |
6508 | ||
6509 | static bfd_byte * | |
6510 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6511 | { | |
6512 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6513 | return p + 4; | |
6514 | } | |
6515 | ||
6516 | static bfd_byte * | |
6517 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6518 | { | |
6519 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6520 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6521 | p = p + 4; |
6522 | bfd_put_32 (abfd, BLR, p); | |
6523 | return p + 4; | |
6524 | } | |
6525 | ||
6526 | static bfd_byte * | |
6527 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6528 | { | |
6529 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6530 | return p + 4; | |
6531 | } | |
6532 | ||
6533 | static bfd_byte * | |
6534 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6535 | { | |
a078d95a | 6536 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6537 | p = p + 4; |
6538 | p = restgpr0 (abfd, p, r); | |
6539 | bfd_put_32 (abfd, MTLR_R0, p); | |
6540 | p = p + 4; | |
6541 | if (r == 29) | |
6542 | { | |
6543 | p = restgpr0 (abfd, p, 30); | |
6544 | p = restgpr0 (abfd, p, 31); | |
6545 | } | |
6546 | bfd_put_32 (abfd, BLR, p); | |
6547 | return p + 4; | |
6548 | } | |
6549 | ||
6550 | static bfd_byte * | |
6551 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6552 | { | |
6553 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6554 | return p + 4; | |
6555 | } | |
6556 | ||
6557 | static bfd_byte * | |
6558 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6559 | { | |
6560 | p = savegpr1 (abfd, p, r); | |
6561 | bfd_put_32 (abfd, BLR, p); | |
6562 | return p + 4; | |
6563 | } | |
6564 | ||
6565 | static bfd_byte * | |
6566 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6567 | { | |
6568 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6569 | return p + 4; | |
6570 | } | |
6571 | ||
6572 | static bfd_byte * | |
6573 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6574 | { | |
6575 | p = restgpr1 (abfd, p, r); | |
6576 | bfd_put_32 (abfd, BLR, p); | |
6577 | return p + 4; | |
6578 | } | |
6579 | ||
6580 | static bfd_byte * | |
6581 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6582 | { | |
6583 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6584 | return p + 4; | |
6585 | } | |
6586 | ||
6587 | static bfd_byte * | |
6588 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6589 | { | |
6590 | p = savefpr (abfd, p, r); | |
a078d95a | 6591 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6592 | p = p + 4; |
6593 | bfd_put_32 (abfd, BLR, p); | |
6594 | return p + 4; | |
6595 | } | |
6596 | ||
6597 | static bfd_byte * | |
6598 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6599 | { | |
6600 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6601 | return p + 4; | |
6602 | } | |
6603 | ||
6604 | static bfd_byte * | |
6605 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6606 | { | |
a078d95a | 6607 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6608 | p = p + 4; |
6609 | p = restfpr (abfd, p, r); | |
6610 | bfd_put_32 (abfd, MTLR_R0, p); | |
6611 | p = p + 4; | |
6612 | if (r == 29) | |
6613 | { | |
6614 | p = restfpr (abfd, p, 30); | |
6615 | p = restfpr (abfd, p, 31); | |
6616 | } | |
6617 | bfd_put_32 (abfd, BLR, p); | |
6618 | return p + 4; | |
6619 | } | |
6620 | ||
6621 | static bfd_byte * | |
6622 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6623 | { | |
6624 | p = savefpr (abfd, p, r); | |
6625 | bfd_put_32 (abfd, BLR, p); | |
6626 | return p + 4; | |
6627 | } | |
6628 | ||
6629 | static bfd_byte * | |
6630 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6631 | { | |
6632 | p = restfpr (abfd, p, r); | |
6633 | bfd_put_32 (abfd, BLR, p); | |
6634 | return p + 4; | |
6635 | } | |
6636 | ||
6637 | static bfd_byte * | |
6638 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6639 | { | |
6640 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6641 | p = p + 4; | |
6642 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6643 | return p + 4; | |
6644 | } | |
6645 | ||
6646 | static bfd_byte * | |
6647 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6648 | { | |
6649 | p = savevr (abfd, p, r); | |
6650 | bfd_put_32 (abfd, BLR, p); | |
6651 | return p + 4; | |
6652 | } | |
6653 | ||
6654 | static bfd_byte * | |
6655 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6656 | { | |
6657 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6658 | p = p + 4; | |
6659 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6660 | return p + 4; | |
6661 | } | |
6662 | ||
6663 | static bfd_byte * | |
6664 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6665 | { | |
6666 | p = restvr (abfd, p, r); | |
6667 | bfd_put_32 (abfd, BLR, p); | |
6668 | return p + 4; | |
6669 | } | |
6670 | ||
e86ce104 AM |
6671 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6672 | information on function code symbol entries to their corresponding | |
6673 | function descriptor symbol entries. */ | |
deb0e272 | 6674 | |
b34976b6 | 6675 | static bfd_boolean |
4ce794b7 | 6676 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6677 | { |
e86ce104 | 6678 | struct bfd_link_info *info; |
65f38f15 | 6679 | struct ppc_link_hash_table *htab; |
411e1bfb | 6680 | struct plt_entry *ent; |
50bc7936 AM |
6681 | struct ppc_link_hash_entry *fh; |
6682 | struct ppc_link_hash_entry *fdh; | |
6683 | bfd_boolean force_local; | |
5bd4f169 | 6684 | |
50bc7936 AM |
6685 | fh = (struct ppc_link_hash_entry *) h; |
6686 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6687 | return TRUE; |
e86ce104 | 6688 | |
4ce794b7 | 6689 | info = inf; |
65f38f15 | 6690 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6691 | if (htab == NULL) |
6692 | return FALSE; | |
5bd4f169 | 6693 | |
c09bdfe5 AM |
6694 | /* Resolve undefined references to dot-symbols as the value |
6695 | in the function descriptor, if we have one in a regular object. | |
6696 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6697 | in dynamic objects are handled elsewhere. */ | |
6698 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6699 | && fh->was_undefined | |
b31867b6 AM |
6700 | && (fdh = defined_func_desc (fh)) != NULL |
6701 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6702 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6703 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6704 | &fh->elf.root.u.def.section, |
aef36ac1 | 6705 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6706 | { |
b31867b6 | 6707 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6708 | fh->elf.forced_local = 1; |
b31867b6 AM |
6709 | fh->elf.def_regular = fdh->elf.def_regular; |
6710 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6711 | } |
6712 | ||
e86ce104 AM |
6713 | /* If this is a function code symbol, transfer dynamic linking |
6714 | information to the function descriptor symbol. */ | |
50bc7936 | 6715 | if (!fh->is_func) |
b34976b6 | 6716 | return TRUE; |
e86ce104 | 6717 | |
50bc7936 | 6718 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6719 | if (ent->plt.refcount > 0) |
6720 | break; | |
50bc7936 AM |
6721 | if (ent == NULL |
6722 | || fh->elf.root.root.string[0] != '.' | |
6723 | || fh->elf.root.root.string[1] == '\0') | |
6724 | return TRUE; | |
5bd4f169 | 6725 | |
50bc7936 AM |
6726 | /* Find the corresponding function descriptor symbol. Create it |
6727 | as undefined if necessary. */ | |
5bd4f169 | 6728 | |
b31867b6 | 6729 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6730 | if (fdh == NULL |
df131623 | 6731 | && !info->executable |
50bc7936 AM |
6732 | && (fh->elf.root.type == bfd_link_hash_undefined |
6733 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6734 | { | |
908b32fc | 6735 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6736 | if (fdh == NULL) |
6737 | return FALSE; | |
50bc7936 | 6738 | } |
648cca2c | 6739 | |
908b32fc | 6740 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6741 | code symbol is strong undefined, make the fake sym the same. |
6742 | If the function code symbol is defined, then force the fake | |
6743 | descriptor local; We can't support overriding of symbols in a | |
6744 | shared library on a fake descriptor. */ | |
908b32fc AM |
6745 | |
6746 | if (fdh != NULL | |
6747 | && fdh->fake | |
433817dd | 6748 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6749 | { |
433817dd AM |
6750 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6751 | { | |
6752 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6753 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6754 | } | |
6755 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6756 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6757 | { | |
6758 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6759 | } | |
908b32fc AM |
6760 | } |
6761 | ||
50bc7936 | 6762 | if (fdh != NULL |
f5385ebf | 6763 | && !fdh->elf.forced_local |
df131623 | 6764 | && (!info->executable |
f5385ebf AM |
6765 | || fdh->elf.def_dynamic |
6766 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6767 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6768 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6769 | { | |
6770 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6771 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6772 | return FALSE; |
f5385ebf AM |
6773 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6774 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6775 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6776 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6777 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6778 | { |
40d16e0b | 6779 | move_plt_plist (fh, fdh); |
f5385ebf | 6780 | fdh->elf.needs_plt = 1; |
e86ce104 | 6781 | } |
50bc7936 | 6782 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6783 | fdh->oh = fh; |
6784 | fh->oh = fdh; | |
e86ce104 AM |
6785 | } |
6786 | ||
50bc7936 AM |
6787 | /* Now that the info is on the function descriptor, clear the |
6788 | function code sym info. Any function code syms for which we | |
6789 | don't have a definition in a regular file, we force local. | |
6790 | This prevents a shared library from exporting syms that have | |
6791 | been imported from another library. Function code syms that | |
6792 | are really in the library we must leave global to prevent the | |
6793 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6794 | force_local = (!fh->elf.def_regular |
6795 | || fdh == NULL | |
6796 | || !fdh->elf.def_regular | |
6797 | || fdh->elf.forced_local); | |
50bc7936 AM |
6798 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6799 | ||
b34976b6 | 6800 | return TRUE; |
e86ce104 | 6801 | } |
40b8271b | 6802 | |
e86ce104 | 6803 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6804 | this hook to a) provide some gcc support functions, and b) transfer |
6805 | dynamic linking information gathered so far on function code symbol | |
6806 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6807 | |
b34976b6 | 6808 | static bfd_boolean |
4ce794b7 AM |
6809 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6810 | struct bfd_link_info *info) | |
e86ce104 AM |
6811 | { |
6812 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6813 | unsigned int i; |
27fc25a1 | 6814 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6815 | { |
6816 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6817 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6818 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6819 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6820 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6821 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6822 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6823 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6824 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6825 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6826 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6827 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6828 | }; | |
e86ce104 AM |
6829 | |
6830 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6831 | if (htab == NULL) |
6832 | return FALSE; | |
6833 | ||
5295321c AM |
6834 | if (!info->relocatable |
6835 | && htab->elf.hgot != NULL) | |
dba6fa9b AM |
6836 | { |
6837 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6838 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6839 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
6840 | htab->elf.hgot->type = STT_OBJECT; | |
6841 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6842 | htab->elf.hgot->root.u.def.value = 0; | |
6843 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6844 | htab->elf.hgot->def_regular = 1; | |
6845 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
6846 | | STV_HIDDEN); | |
6847 | } | |
c66bb0ee | 6848 | |
82bd7b59 AM |
6849 | if (htab->sfpr == NULL) |
6850 | /* We don't have any relocs. */ | |
b34976b6 | 6851 | return TRUE; |
82bd7b59 | 6852 | |
deb0e272 AM |
6853 | /* Provide any missing _save* and _rest* functions. */ |
6854 | htab->sfpr->size = 0; | |
7d4c687d | 6855 | if (htab->params->save_restore_funcs) |
27fc25a1 AM |
6856 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) |
6857 | if (!sfpr_define (info, &funcs[i])) | |
6858 | return FALSE; | |
82bd7b59 | 6859 | |
4ce794b7 | 6860 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6861 | |
eea6121a | 6862 | if (htab->sfpr->size == 0) |
8423293d | 6863 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6864 | |
b34976b6 | 6865 | return TRUE; |
e86ce104 AM |
6866 | } |
6867 | ||
a345bc8d AM |
6868 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
6869 | ||
6870 | static bfd_boolean | |
6871 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6872 | { | |
6873 | struct ppc_link_hash_entry *eh; | |
6874 | struct elf_dyn_relocs *p; | |
6875 | ||
6876 | eh = (struct ppc_link_hash_entry *) h; | |
6877 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6878 | { | |
6879 | asection *s = p->sec->output_section; | |
6880 | ||
6881 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6882 | return TRUE; | |
6883 | } | |
6884 | return FALSE; | |
6885 | } | |
6886 | ||
e86ce104 AM |
6887 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6888 | regular object. The current definition is in some section of the | |
6889 | dynamic object, but we're not including those sections. We have to | |
6890 | change the definition to something the rest of the link can | |
6891 | understand. */ | |
6892 | ||
b34976b6 | 6893 | static bfd_boolean |
4ce794b7 AM |
6894 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6895 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6896 | { |
6897 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6898 | asection *s; |
e86ce104 AM |
6899 | |
6900 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6901 | if (htab == NULL) |
6902 | return FALSE; | |
e86ce104 AM |
6903 | |
6904 | /* Deal with function syms. */ | |
6905 | if (h->type == STT_FUNC | |
e054468f | 6906 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6907 | || h->needs_plt) |
e86ce104 AM |
6908 | { |
6909 | /* Clear procedure linkage table information for any symbol that | |
6910 | won't need a .plt entry. */ | |
411e1bfb AM |
6911 | struct plt_entry *ent; |
6912 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6913 | if (ent->plt.refcount > 0) | |
6914 | break; | |
8387904d | 6915 | if (ent == NULL |
e054468f AM |
6916 | || (h->type != STT_GNU_IFUNC |
6917 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6918 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6919 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6920 | { |
411e1bfb | 6921 | h->plt.plist = NULL; |
f5385ebf | 6922 | h->needs_plt = 0; |
40b8271b | 6923 | } |
a345bc8d AM |
6924 | else if (abiversion (info->output_bfd) == 2) |
6925 | { | |
6926 | /* After adjust_dynamic_symbol, non_got_ref set in the | |
6927 | non-shared case means that we have allocated space in | |
6928 | .dynbss for the symbol and thus dyn_relocs for this | |
6929 | symbol should be discarded. | |
6930 | If we get here we know we are making a PLT entry for this | |
6931 | symbol, and in an executable we'd normally resolve | |
6932 | relocations against this symbol to the PLT entry. Allow | |
6933 | dynamic relocs if the reference is weak, and the dynamic | |
6934 | relocs will not cause text relocation. */ | |
6935 | if (!h->ref_regular_nonweak | |
6936 | && h->non_got_ref | |
6937 | && h->type != STT_GNU_IFUNC | |
6938 | && !readonly_dynrelocs (h)) | |
6939 | h->non_got_ref = 0; | |
6940 | ||
6941 | /* If making a plt entry, then we don't need copy relocs. */ | |
6942 | return TRUE; | |
6943 | } | |
5bd4f169 | 6944 | } |
bbd7ec4a | 6945 | else |
411e1bfb | 6946 | h->plt.plist = NULL; |
5bd4f169 AM |
6947 | |
6948 | /* If this is a weak symbol, and there is a real definition, the | |
6949 | processor independent code will have arranged for us to see the | |
6950 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6951 | if (h->u.weakdef != NULL) |
5bd4f169 | 6952 | { |
f6e332e6 AM |
6953 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6954 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6955 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6956 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6957 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6958 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6959 | return TRUE; |
5bd4f169 AM |
6960 | } |
6961 | ||
5bd4f169 AM |
6962 | /* If we are creating a shared library, we must presume that the |
6963 | only references to the symbol are via the global offset table. | |
6964 | For such cases we need not do anything here; the relocations will | |
6965 | be handled correctly by relocate_section. */ | |
6966 | if (info->shared) | |
b34976b6 | 6967 | return TRUE; |
5bd4f169 | 6968 | |
65f38f15 AM |
6969 | /* If there are no references to this symbol that do not use the |
6970 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6971 | if (!h->non_got_ref) |
b34976b6 | 6972 | return TRUE; |
65f38f15 | 6973 | |
b186458a JJ |
6974 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6975 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6976 | return TRUE; | |
6977 | ||
a345bc8d AM |
6978 | /* If we didn't find any dynamic relocs in read-only sections, then |
6979 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6980 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 6981 | { |
a345bc8d AM |
6982 | h->non_got_ref = 0; |
6983 | return TRUE; | |
65f38f15 AM |
6984 | } |
6985 | ||
5d35169e | 6986 | if (h->plt.plist != NULL) |
97b639ba AM |
6987 | { |
6988 | /* We should never get here, but unfortunately there are versions | |
6989 | of gcc out there that improperly (for this ABI) put initialized | |
6990 | function pointers, vtable refs and suchlike in read-only | |
6991 | sections. Allow them to proceed, but warn that this might | |
6992 | break at runtime. */ | |
25f53a85 | 6993 | info->callbacks->einfo |
bc30df16 | 6994 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 6995 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6996 | h->root.root.string); |
6997 | } | |
5d35169e AM |
6998 | |
6999 | /* This is a reference to a symbol defined by a dynamic object which | |
7000 | is not a function. */ | |
7001 | ||
5bd4f169 AM |
7002 | /* We must allocate the symbol in our .dynbss section, which will |
7003 | become part of the .bss section of the executable. There will be | |
7004 | an entry for this symbol in the .dynsym section. The dynamic | |
7005 | object will contain position independent code, so all references | |
7006 | from the dynamic object to this symbol will go through the global | |
7007 | offset table. The dynamic linker will use the .dynsym entry to | |
7008 | determine the address it must put in the global offset table, so | |
7009 | both the dynamic object and the regular object will refer to the | |
7010 | same memory location for the variable. */ | |
5bd4f169 | 7011 | |
04c9666a AM |
7012 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7013 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7014 | runtime process image. We need to remember the offset into the |
7015 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7016 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7017 | { |
eea6121a | 7018 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7019 | h->needs_copy = 1; |
5bd4f169 AM |
7020 | } |
7021 | ||
4ce794b7 | 7022 | s = htab->dynbss; |
5bd4f169 | 7023 | |
027297b7 | 7024 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
7025 | } |
7026 | ||
e86ce104 AM |
7027 | /* If given a function descriptor symbol, hide both the function code |
7028 | sym and the descriptor. */ | |
7029 | static void | |
4ce794b7 AM |
7030 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7031 | struct elf_link_hash_entry *h, | |
7032 | bfd_boolean force_local) | |
e86ce104 | 7033 | { |
34814b9f | 7034 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7035 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7036 | ||
34814b9f AM |
7037 | eh = (struct ppc_link_hash_entry *) h; |
7038 | if (eh->is_func_descriptor) | |
e86ce104 | 7039 | { |
34814b9f | 7040 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7041 | |
721956f4 | 7042 | if (fh == NULL) |
d1329ca3 AM |
7043 | { |
7044 | const char *p, *q; | |
7045 | struct ppc_link_hash_table *htab; | |
7046 | char save; | |
7047 | ||
7048 | /* We aren't supposed to use alloca in BFD because on | |
7049 | systems which do not have alloca the version in libiberty | |
7050 | calls xmalloc, which might cause the program to crash | |
7051 | when it runs out of memory. This function doesn't have a | |
7052 | return status, so there's no way to gracefully return an | |
7053 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7054 | accessed; It's either a string in an ELF string table, |
7055 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7056 | |
34814b9f | 7057 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7058 | save = *p; |
7059 | *(char *) p = '.'; | |
7060 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7061 | if (htab == NULL) |
7062 | return; | |
7063 | ||
34814b9f AM |
7064 | fh = (struct ppc_link_hash_entry *) |
7065 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7066 | *(char *) p = save; |
7067 | ||
7068 | /* Unfortunately, if it so happens that the string we were | |
7069 | looking for was allocated immediately before this string, | |
7070 | then we overwrote the string terminator. That's the only | |
7071 | reason the lookup should fail. */ | |
7072 | if (fh == NULL) | |
7073 | { | |
34814b9f AM |
7074 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7075 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7076 | --q, --p; |
34814b9f AM |
7077 | if (q < eh->elf.root.root.string && *p == '.') |
7078 | fh = (struct ppc_link_hash_entry *) | |
7079 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7080 | } |
7081 | if (fh != NULL) | |
7082 | { | |
34814b9f AM |
7083 | eh->oh = fh; |
7084 | fh->oh = eh; | |
d1329ca3 AM |
7085 | } |
7086 | } | |
e86ce104 | 7087 | if (fh != NULL) |
34814b9f | 7088 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7089 | } |
7090 | } | |
7091 | ||
411e1bfb | 7092 | static bfd_boolean |
8843416a AM |
7093 | get_sym_h (struct elf_link_hash_entry **hp, |
7094 | Elf_Internal_Sym **symp, | |
7095 | asection **symsecp, | |
f961d9dd | 7096 | unsigned char **tls_maskp, |
8843416a AM |
7097 | Elf_Internal_Sym **locsymsp, |
7098 | unsigned long r_symndx, | |
7099 | bfd *ibfd) | |
411e1bfb | 7100 | { |
0ffa91dd | 7101 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7102 | |
7103 | if (r_symndx >= symtab_hdr->sh_info) | |
7104 | { | |
7105 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7106 | struct elf_link_hash_entry *h; | |
7107 | ||
7108 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7109 | h = elf_follow_link (h); |
411e1bfb AM |
7110 | |
7111 | if (hp != NULL) | |
7112 | *hp = h; | |
7113 | ||
7114 | if (symp != NULL) | |
7115 | *symp = NULL; | |
7116 | ||
7117 | if (symsecp != NULL) | |
7118 | { | |
7119 | asection *symsec = NULL; | |
7120 | if (h->root.type == bfd_link_hash_defined | |
7121 | || h->root.type == bfd_link_hash_defweak) | |
7122 | symsec = h->root.u.def.section; | |
7123 | *symsecp = symsec; | |
7124 | } | |
7125 | ||
e7b938ca | 7126 | if (tls_maskp != NULL) |
411e1bfb AM |
7127 | { |
7128 | struct ppc_link_hash_entry *eh; | |
7129 | ||
7130 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7131 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7132 | } |
7133 | } | |
7134 | else | |
7135 | { | |
7136 | Elf_Internal_Sym *sym; | |
7137 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7138 | ||
7139 | if (locsyms == NULL) | |
7140 | { | |
7141 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7142 | if (locsyms == NULL) | |
7143 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7144 | symtab_hdr->sh_info, | |
7145 | 0, NULL, NULL, NULL); | |
7146 | if (locsyms == NULL) | |
7147 | return FALSE; | |
7148 | *locsymsp = locsyms; | |
7149 | } | |
7150 | sym = locsyms + r_symndx; | |
7151 | ||
7152 | if (hp != NULL) | |
7153 | *hp = NULL; | |
7154 | ||
7155 | if (symp != NULL) | |
7156 | *symp = sym; | |
7157 | ||
7158 | if (symsecp != NULL) | |
cb33740c | 7159 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7160 | |
e7b938ca | 7161 | if (tls_maskp != NULL) |
411e1bfb AM |
7162 | { |
7163 | struct got_entry **lgot_ents; | |
f961d9dd | 7164 | unsigned char *tls_mask; |
411e1bfb | 7165 | |
e7b938ca | 7166 | tls_mask = NULL; |
411e1bfb AM |
7167 | lgot_ents = elf_local_got_ents (ibfd); |
7168 | if (lgot_ents != NULL) | |
7169 | { | |
e054468f AM |
7170 | struct plt_entry **local_plt = (struct plt_entry **) |
7171 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7172 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7173 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7174 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7175 | } |
e7b938ca | 7176 | *tls_maskp = tls_mask; |
411e1bfb AM |
7177 | } |
7178 | } | |
7179 | return TRUE; | |
7180 | } | |
7181 | ||
e7b938ca | 7182 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7183 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7184 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7185 | |
7186 | static int | |
f961d9dd | 7187 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7188 | unsigned long *toc_symndx, |
7189 | bfd_vma *toc_addend, | |
0d4792f7 | 7190 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7191 | const Elf_Internal_Rela *rel, |
7192 | bfd *ibfd) | |
411e1bfb AM |
7193 | { |
7194 | unsigned long r_symndx; | |
0d4792f7 | 7195 | int next_r; |
411e1bfb AM |
7196 | struct elf_link_hash_entry *h; |
7197 | Elf_Internal_Sym *sym; | |
7198 | asection *sec; | |
7199 | bfd_vma off; | |
7200 | ||
7201 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7202 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7203 | return 0; |
411e1bfb | 7204 | |
e7b938ca | 7205 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7206 | || sec == NULL |
6bee8834 | 7207 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7208 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7209 | return 1; |
411e1bfb AM |
7210 | |
7211 | /* Look inside a TOC section too. */ | |
7212 | if (h != NULL) | |
7213 | { | |
7214 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7215 | off = h->root.u.def.value; | |
7216 | } | |
7217 | else | |
7218 | off = sym->st_value; | |
7219 | off += rel->r_addend; | |
7220 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7221 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7222 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7223 | if (toc_symndx != NULL) |
7224 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7225 | if (toc_addend != NULL) |
7226 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7227 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7228 | return 0; | |
854b41e7 | 7229 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7230 | && (next_r == -1 || next_r == -2)) |
7231 | return 1 - next_r; | |
951fd09b | 7232 | return 1; |
411e1bfb AM |
7233 | } |
7234 | ||
3b421ab3 AM |
7235 | /* Find (or create) an entry in the tocsave hash table. */ |
7236 | ||
7237 | static struct tocsave_entry * | |
7238 | tocsave_find (struct ppc_link_hash_table *htab, | |
7239 | enum insert_option insert, | |
7240 | Elf_Internal_Sym **local_syms, | |
7241 | const Elf_Internal_Rela *irela, | |
7242 | bfd *ibfd) | |
7243 | { | |
7244 | unsigned long r_indx; | |
7245 | struct elf_link_hash_entry *h; | |
7246 | Elf_Internal_Sym *sym; | |
7247 | struct tocsave_entry ent, *p; | |
7248 | hashval_t hash; | |
7249 | struct tocsave_entry **slot; | |
7250 | ||
7251 | r_indx = ELF64_R_SYM (irela->r_info); | |
7252 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7253 | return NULL; | |
7254 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7255 | { | |
7256 | (*_bfd_error_handler) | |
7257 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7258 | return NULL; | |
7259 | } | |
7260 | ||
7261 | if (h != NULL) | |
7262 | ent.offset = h->root.u.def.value; | |
7263 | else | |
7264 | ent.offset = sym->st_value; | |
7265 | ent.offset += irela->r_addend; | |
7266 | ||
7267 | hash = tocsave_htab_hash (&ent); | |
7268 | slot = ((struct tocsave_entry **) | |
7269 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7270 | if (slot == NULL) | |
7271 | return NULL; | |
7272 | ||
7273 | if (*slot == NULL) | |
7274 | { | |
7275 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7276 | if (p == NULL) | |
7277 | return NULL; | |
7278 | *p = ent; | |
7279 | *slot = p; | |
7280 | } | |
7281 | return *slot; | |
7282 | } | |
7283 | ||
754021d0 | 7284 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7285 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7286 | |
7287 | static bfd_boolean | |
7288 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7289 | { | |
7290 | struct ppc_link_hash_entry *eh; | |
7291 | asection *sym_sec; | |
74f0fb50 | 7292 | struct _opd_sec_data *opd; |
754021d0 AM |
7293 | |
7294 | if (h->root.type == bfd_link_hash_indirect) | |
7295 | return TRUE; | |
7296 | ||
754021d0 AM |
7297 | if (h->root.type != bfd_link_hash_defined |
7298 | && h->root.type != bfd_link_hash_defweak) | |
7299 | return TRUE; | |
7300 | ||
7301 | eh = (struct ppc_link_hash_entry *) h; | |
7302 | if (eh->adjust_done) | |
7303 | return TRUE; | |
7304 | ||
7305 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7306 | opd = get_opd_info (sym_sec); |
7307 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7308 | { |
74f0fb50 | 7309 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
7310 | if (adjust == -1) |
7311 | { | |
7312 | /* This entry has been deleted. */ | |
b3fac117 | 7313 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7314 | if (dsec == NULL) |
7315 | { | |
7316 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7317 | if (discarded_section (dsec)) |
81688140 | 7318 | { |
b3fac117 | 7319 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7320 | break; |
7321 | } | |
7322 | } | |
4025353c | 7323 | eh->elf.root.u.def.value = 0; |
81688140 | 7324 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7325 | } |
7326 | else | |
7327 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7328 | eh->adjust_done = 1; |
7329 | } | |
7330 | return TRUE; | |
7331 | } | |
7332 | ||
8c1d1bb8 | 7333 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7334 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7335 | have already been determined. */ |
7336 | ||
7337 | static bfd_boolean | |
7338 | dec_dynrel_count (bfd_vma r_info, | |
7339 | asection *sec, | |
7340 | struct bfd_link_info *info, | |
7341 | Elf_Internal_Sym **local_syms, | |
7342 | struct elf_link_hash_entry *h, | |
19e08130 | 7343 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7344 | { |
7345 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7346 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7347 | |
7348 | /* Can this reloc be dynamic? This switch, and later tests here | |
7349 | should be kept in sync with the code in check_relocs. */ | |
7350 | r_type = ELF64_R_TYPE (r_info); | |
7351 | switch (r_type) | |
7352 | { | |
7353 | default: | |
7354 | return TRUE; | |
7355 | ||
7356 | case R_PPC64_TPREL16: | |
7357 | case R_PPC64_TPREL16_LO: | |
7358 | case R_PPC64_TPREL16_HI: | |
7359 | case R_PPC64_TPREL16_HA: | |
7360 | case R_PPC64_TPREL16_DS: | |
7361 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7362 | case R_PPC64_TPREL16_HIGH: |
7363 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7364 | case R_PPC64_TPREL16_HIGHER: |
7365 | case R_PPC64_TPREL16_HIGHERA: | |
7366 | case R_PPC64_TPREL16_HIGHEST: | |
7367 | case R_PPC64_TPREL16_HIGHESTA: | |
7368 | if (!info->shared) | |
7369 | return TRUE; | |
7370 | ||
7371 | case R_PPC64_TPREL64: | |
7372 | case R_PPC64_DTPMOD64: | |
7373 | case R_PPC64_DTPREL64: | |
7374 | case R_PPC64_ADDR64: | |
7375 | case R_PPC64_REL30: | |
7376 | case R_PPC64_REL32: | |
7377 | case R_PPC64_REL64: | |
7378 | case R_PPC64_ADDR14: | |
7379 | case R_PPC64_ADDR14_BRNTAKEN: | |
7380 | case R_PPC64_ADDR14_BRTAKEN: | |
7381 | case R_PPC64_ADDR16: | |
7382 | case R_PPC64_ADDR16_DS: | |
7383 | case R_PPC64_ADDR16_HA: | |
7384 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7385 | case R_PPC64_ADDR16_HIGH: |
7386 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7387 | case R_PPC64_ADDR16_HIGHER: |
7388 | case R_PPC64_ADDR16_HIGHERA: | |
7389 | case R_PPC64_ADDR16_HIGHEST: | |
7390 | case R_PPC64_ADDR16_HIGHESTA: | |
7391 | case R_PPC64_ADDR16_LO: | |
7392 | case R_PPC64_ADDR16_LO_DS: | |
7393 | case R_PPC64_ADDR24: | |
7394 | case R_PPC64_ADDR32: | |
7395 | case R_PPC64_UADDR16: | |
7396 | case R_PPC64_UADDR32: | |
7397 | case R_PPC64_UADDR64: | |
7398 | case R_PPC64_TOC: | |
7399 | break; | |
7400 | } | |
7401 | ||
7402 | if (local_syms != NULL) | |
7403 | { | |
7404 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7405 | bfd *ibfd = sec->owner; |
7406 | ||
7407 | r_symndx = ELF64_R_SYM (r_info); | |
7408 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7409 | return FALSE; | |
7410 | } | |
7411 | ||
7412 | if ((info->shared | |
1d483afe | 7413 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7414 | || (h != NULL |
198f1157 | 7415 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7416 | || h->root.type == bfd_link_hash_defweak |
7417 | || !h->def_regular)))) | |
7418 | || (ELIMINATE_COPY_RELOCS | |
7419 | && !info->shared | |
7420 | && h != NULL | |
7421 | && (h->root.type == bfd_link_hash_defweak | |
7422 | || !h->def_regular))) | |
7423 | ; | |
7424 | else | |
7425 | return TRUE; | |
7426 | ||
7427 | if (h != NULL) | |
6edfbbad | 7428 | { |
19e08130 AM |
7429 | struct elf_dyn_relocs *p; |
7430 | struct elf_dyn_relocs **pp; | |
7431 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7432 | ||
7433 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7434 | with local syms for a given section. Also, symbol flags are | |
7435 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7436 | report a dynreloc miscount. */ | |
7437 | if (*pp == NULL && info->gc_sections) | |
7438 | return TRUE; | |
7439 | ||
7440 | while ((p = *pp) != NULL) | |
60124e18 | 7441 | { |
19e08130 AM |
7442 | if (p->sec == sec) |
7443 | { | |
7444 | if (!must_be_dyn_reloc (info, r_type)) | |
7445 | p->pc_count -= 1; | |
7446 | p->count -= 1; | |
7447 | if (p->count == 0) | |
7448 | *pp = p->next; | |
7449 | return TRUE; | |
7450 | } | |
7451 | pp = &p->next; | |
60124e18 | 7452 | } |
6edfbbad | 7453 | } |
19e08130 AM |
7454 | else |
7455 | { | |
7456 | struct ppc_dyn_relocs *p; | |
7457 | struct ppc_dyn_relocs **pp; | |
7458 | void *vpp; | |
7459 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7460 | |
19e08130 AM |
7461 | if (local_syms == NULL) |
7462 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7463 | if (sym_sec == NULL) | |
7464 | sym_sec = sec; | |
c57da1a7 | 7465 | |
19e08130 AM |
7466 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7467 | pp = (struct ppc_dyn_relocs **) vpp; | |
7468 | ||
7469 | if (*pp == NULL && info->gc_sections) | |
7470 | return TRUE; | |
7471 | ||
7472 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7473 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7474 | { |
19e08130 AM |
7475 | if (p->sec == sec && p->ifunc == is_ifunc) |
7476 | { | |
7477 | p->count -= 1; | |
7478 | if (p->count == 0) | |
7479 | *pp = p->next; | |
7480 | return TRUE; | |
7481 | } | |
7482 | pp = &p->next; | |
8c1d1bb8 | 7483 | } |
8c1d1bb8 AM |
7484 | } |
7485 | ||
8de848d8 | 7486 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7487 | sec->owner, sec); |
8c1d1bb8 AM |
7488 | bfd_set_error (bfd_error_bad_value); |
7489 | return FALSE; | |
7490 | } | |
7491 | ||
754021d0 AM |
7492 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7493 | only remove those associated with functions in discarded link-once | |
7494 | sections, or weakly defined functions that have been overridden. It | |
7495 | would be possible to remove many more entries for statically linked | |
7496 | applications. */ | |
7497 | ||
b34976b6 | 7498 | bfd_boolean |
e7d1c40c | 7499 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7500 | { |
7501 | bfd *ibfd; | |
754021d0 | 7502 | bfd_boolean some_edited = FALSE; |
3f764659 | 7503 | asection *need_pad = NULL; |
e7d1c40c AM |
7504 | struct ppc_link_hash_table *htab; |
7505 | ||
7506 | htab = ppc_hash_table (info); | |
7507 | if (htab == NULL) | |
7508 | return FALSE; | |
1e2f5b6e | 7509 | |
411e1bfb | 7510 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7511 | { |
7512 | asection *sec; | |
7513 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7514 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7515 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7516 | bfd_vma offset; |
74f0fb50 | 7517 | struct _opd_sec_data *opd; |
3f764659 JJ |
7518 | bfd_boolean need_edit, add_aux_fields; |
7519 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7520 | |
854b41e7 AM |
7521 | if (!is_ppc64_elf (ibfd)) |
7522 | continue; | |
7523 | ||
1e2f5b6e | 7524 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7525 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7526 | continue; |
7527 | ||
dbaa2011 | 7528 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7529 | continue; |
7530 | ||
1e2f5b6e AM |
7531 | if (sec->output_section == bfd_abs_section_ptr) |
7532 | continue; | |
7533 | ||
7534 | /* Look through the section relocs. */ | |
7535 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7536 | continue; | |
7537 | ||
6cdc0ccc | 7538 | local_syms = NULL; |
0ffa91dd | 7539 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7540 | |
7541 | /* Read the relocations. */ | |
4ce794b7 | 7542 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7543 | info->keep_memory); |
1e2f5b6e | 7544 | if (relstart == NULL) |
b34976b6 | 7545 | return FALSE; |
1e2f5b6e AM |
7546 | |
7547 | /* First run through the relocs to check they are sane, and to | |
7548 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7549 | need_edit = FALSE; |
3f764659 | 7550 | need_pad = sec; |
1e2f5b6e AM |
7551 | offset = 0; |
7552 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7553 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7554 | { |
04c9666a | 7555 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7556 | unsigned long r_symndx; |
7557 | asection *sym_sec; | |
7558 | struct elf_link_hash_entry *h; | |
7559 | Elf_Internal_Sym *sym; | |
7560 | ||
3f764659 | 7561 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7562 | only interested in the reloc pointing to a function entry |
7563 | point. */ | |
50bc7936 AM |
7564 | if (rel->r_offset != offset |
7565 | || rel + 1 >= relend | |
7566 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7567 | { |
7568 | /* If someone messes with .opd alignment then after a | |
7569 | "ld -r" we might have padding in the middle of .opd. | |
7570 | Also, there's nothing to prevent someone putting | |
7571 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7572 | optimization for them! */ |
3f764659 | 7573 | broken_opd: |
1e2f5b6e | 7574 | (*_bfd_error_handler) |
d003868e | 7575 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7576 | need_edit = FALSE; |
1e2f5b6e AM |
7577 | break; |
7578 | } | |
7579 | ||
50bc7936 AM |
7580 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7581 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7582 | { | |
7583 | (*_bfd_error_handler) | |
d003868e AM |
7584 | (_("%B: unexpected reloc type %u in .opd section"), |
7585 | ibfd, r_type); | |
50bc7936 AM |
7586 | need_edit = FALSE; |
7587 | break; | |
7588 | } | |
7589 | ||
1e2f5b6e | 7590 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7591 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7592 | r_symndx, ibfd)) | |
50bc7936 | 7593 | goto error_ret; |
1e2f5b6e AM |
7594 | |
7595 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7596 | { | |
411e1bfb AM |
7597 | const char *sym_name; |
7598 | if (h != NULL) | |
7599 | sym_name = h->root.root.string; | |
7600 | else | |
26c61ae5 L |
7601 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7602 | sym_sec); | |
411e1bfb | 7603 | |
1e2f5b6e | 7604 | (*_bfd_error_handler) |
d003868e AM |
7605 | (_("%B: undefined sym `%s' in .opd section"), |
7606 | ibfd, sym_name); | |
b34976b6 | 7607 | need_edit = FALSE; |
1e2f5b6e AM |
7608 | break; |
7609 | } | |
7610 | ||
51020317 AM |
7611 | /* opd entries are always for functions defined in the |
7612 | current input bfd. If the symbol isn't defined in the | |
7613 | input bfd, then we won't be using the function in this | |
7614 | bfd; It must be defined in a linkonce section in another | |
7615 | bfd, or is weak. It's also possible that we are | |
7616 | discarding the function due to a linker script /DISCARD/, | |
7617 | which we test for via the output_section. */ | |
7618 | if (sym_sec->owner != ibfd | |
7619 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7620 | need_edit = TRUE; |
1e2f5b6e | 7621 | |
50bc7936 | 7622 | rel += 2; |
3f764659 JJ |
7623 | if (rel == relend |
7624 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7625 | { | |
7626 | if (sec->size == offset + 24) | |
7627 | { | |
7628 | need_pad = NULL; | |
7629 | break; | |
7630 | } | |
7631 | if (rel == relend && sec->size == offset + 16) | |
7632 | { | |
7633 | cnt_16b++; | |
7634 | break; | |
7635 | } | |
7636 | goto broken_opd; | |
7637 | } | |
7638 | ||
7639 | if (rel->r_offset == offset + 24) | |
7640 | offset += 24; | |
7641 | else if (rel->r_offset != offset + 16) | |
7642 | goto broken_opd; | |
7643 | else if (rel + 1 < relend | |
7644 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7645 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7646 | { | |
7647 | offset += 16; | |
7648 | cnt_16b++; | |
7649 | } | |
7650 | else if (rel + 2 < relend | |
7651 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7652 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7653 | { | |
7654 | offset += 24; | |
7655 | rel += 1; | |
7656 | } | |
7657 | else | |
7658 | goto broken_opd; | |
1e2f5b6e AM |
7659 | } |
7660 | ||
e7d1c40c | 7661 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 JJ |
7662 | |
7663 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7664 | { |
7665 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7666 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7667 | bfd_byte *rptr, *wptr; |
983bddc8 | 7668 | bfd_byte *new_contents; |
b34976b6 | 7669 | bfd_boolean skip; |
3f764659 | 7670 | long opd_ent_size; |
74f0fb50 AM |
7671 | bfd_size_type amt; |
7672 | ||
983bddc8 | 7673 | new_contents = NULL; |
74f0fb50 AM |
7674 | amt = sec->size * sizeof (long) / 8; |
7675 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7676 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7677 | if (opd->adjust == NULL) |
7678 | return FALSE; | |
7679 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7680 | |
7681 | /* This seems a waste of time as input .opd sections are all | |
7682 | zeros as generated by gcc, but I suppose there's no reason | |
7683 | this will always be so. We might start putting something in | |
7684 | the third word of .opd entries. */ | |
7685 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7686 | { | |
eea6121a AM |
7687 | bfd_byte *loc; |
7688 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7689 | { |
eea6121a AM |
7690 | if (loc != NULL) |
7691 | free (loc); | |
50bc7936 | 7692 | error_ret: |
6cdc0ccc AM |
7693 | if (local_syms != NULL |
7694 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7695 | free (local_syms); | |
6cdc0ccc AM |
7696 | if (elf_section_data (sec)->relocs != relstart) |
7697 | free (relstart); | |
b34976b6 | 7698 | return FALSE; |
6cdc0ccc | 7699 | } |
1e2f5b6e AM |
7700 | sec->contents = loc; |
7701 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7702 | } | |
7703 | ||
7704 | elf_section_data (sec)->relocs = relstart; | |
7705 | ||
3f764659 | 7706 | new_contents = sec->contents; |
3f764659 JJ |
7707 | if (add_aux_fields) |
7708 | { | |
7709 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7710 | if (new_contents == NULL) | |
7711 | return FALSE; | |
7712 | need_pad = FALSE; | |
3f764659 | 7713 | } |
b4f4e59f AM |
7714 | wptr = new_contents; |
7715 | rptr = sec->contents; | |
3f764659 | 7716 | |
1e2f5b6e | 7717 | write_rel = relstart; |
b34976b6 | 7718 | skip = FALSE; |
1e2f5b6e | 7719 | offset = 0; |
3f764659 | 7720 | opd_ent_size = 0; |
1e2f5b6e AM |
7721 | for (rel = relstart; rel < relend; rel++) |
7722 | { | |
50bc7936 AM |
7723 | unsigned long r_symndx; |
7724 | asection *sym_sec; | |
7725 | struct elf_link_hash_entry *h; | |
7726 | Elf_Internal_Sym *sym; | |
7727 | ||
7728 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7729 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7730 | r_symndx, ibfd)) |
50bc7936 AM |
7731 | goto error_ret; |
7732 | ||
1e2f5b6e AM |
7733 | if (rel->r_offset == offset) |
7734 | { | |
50bc7936 | 7735 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7736 | |
7737 | /* See if the .opd entry is full 24 byte or | |
7738 | 16 byte (with fd_aux entry overlapped with next | |
7739 | fd_func). */ | |
7740 | opd_ent_size = 24; | |
7741 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7742 | || (rel + 3 < relend | |
7743 | && rel[2].r_offset == offset + 16 | |
7744 | && rel[3].r_offset == offset + 24 | |
7745 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7746 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7747 | opd_ent_size = 16; | |
7748 | ||
4025353c AM |
7749 | if (h != NULL |
7750 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7751 | { |
e7d1c40c | 7752 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); |
c4f68ce3 AM |
7753 | if (fdh != NULL |
7754 | && fdh->elf.root.type != bfd_link_hash_defined | |
7755 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7756 | fdh = NULL; | |
7757 | } | |
1e2f5b6e | 7758 | |
51020317 AM |
7759 | skip = (sym_sec->owner != ibfd |
7760 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7761 | if (skip) |
7762 | { | |
4025353c | 7763 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7764 | { |
7765 | /* Arrange for the function descriptor sym | |
7766 | to be dropped. */ | |
d6fe2dc1 AM |
7767 | fdh->elf.root.u.def.value = 0; |
7768 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7769 | } |
74f0fb50 | 7770 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7771 | } |
7772 | else | |
1e2f5b6e AM |
7773 | { |
7774 | /* We'll be keeping this opd entry. */ | |
7775 | ||
4025353c | 7776 | if (fdh != NULL) |
1e2f5b6e | 7777 | { |
754021d0 AM |
7778 | /* Redefine the function descriptor symbol to |
7779 | this location in the opd section. It is | |
7780 | necessary to update the value here rather | |
7781 | than using an array of adjustments as we do | |
7782 | for local symbols, because various places | |
7783 | in the generic ELF code use the value | |
7784 | stored in u.def.value. */ | |
3f764659 | 7785 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7786 | fdh->adjust_done = 1; |
1e2f5b6e | 7787 | } |
754021d0 AM |
7788 | |
7789 | /* Local syms are a bit tricky. We could | |
7790 | tweak them as they can be cached, but | |
7791 | we'd need to look through the local syms | |
7792 | for the function descriptor sym which we | |
7793 | don't have at the moment. So keep an | |
7794 | array of adjustments. */ | |
74f0fb50 | 7795 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7796 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7797 | |
7798 | if (wptr != rptr) | |
3f764659 JJ |
7799 | memcpy (wptr, rptr, opd_ent_size); |
7800 | wptr += opd_ent_size; | |
7801 | if (add_aux_fields && opd_ent_size == 16) | |
7802 | { | |
7803 | memset (wptr, '\0', 8); | |
7804 | wptr += 8; | |
7805 | } | |
1e2f5b6e | 7806 | } |
3f764659 JJ |
7807 | rptr += opd_ent_size; |
7808 | offset += opd_ent_size; | |
1e2f5b6e AM |
7809 | } |
7810 | ||
50bc7936 AM |
7811 | if (skip) |
7812 | { | |
60124e18 AM |
7813 | if (!NO_OPD_RELOCS |
7814 | && !info->relocatable | |
18d944df | 7815 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7816 | NULL, h, sym)) |
8c1d1bb8 | 7817 | goto error_ret; |
50bc7936 AM |
7818 | } |
7819 | else | |
1e2f5b6e | 7820 | { |
50bc7936 AM |
7821 | /* We need to adjust any reloc offsets to point to the |
7822 | new opd entries. While we're at it, we may as well | |
7823 | remove redundant relocs. */ | |
74f0fb50 | 7824 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7825 | if (write_rel != rel) |
7826 | memcpy (write_rel, rel, sizeof (*rel)); | |
7827 | ++write_rel; | |
7828 | } | |
7829 | } | |
7830 | ||
3f764659 | 7831 | sec->size = wptr - new_contents; |
1e2f5b6e | 7832 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7833 | if (add_aux_fields) |
7834 | { | |
7835 | free (sec->contents); | |
7836 | sec->contents = new_contents; | |
7837 | } | |
7838 | ||
05bf9422 | 7839 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7840 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7841 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7842 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7843 | some_edited = TRUE; |
1e2f5b6e | 7844 | } |
6cdc0ccc | 7845 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7846 | free (relstart); |
6cdc0ccc | 7847 | |
411e1bfb AM |
7848 | if (local_syms != NULL |
7849 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7850 | { | |
7851 | if (!info->keep_memory) | |
7852 | free (local_syms); | |
7853 | else | |
7854 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7855 | } | |
7856 | } | |
7857 | ||
754021d0 AM |
7858 | if (some_edited) |
7859 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7860 | ||
3f764659 JJ |
7861 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7862 | long, add a 8 byte padding after it. */ | |
7863 | if (need_pad != NULL && !info->relocatable) | |
7864 | { | |
7865 | bfd_byte *p; | |
7866 | ||
7867 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7868 | { | |
7869 | BFD_ASSERT (need_pad->size > 0); | |
7870 | ||
7871 | p = bfd_malloc (need_pad->size + 8); | |
7872 | if (p == NULL) | |
7873 | return FALSE; | |
699733f6 | 7874 | |
3f764659 JJ |
7875 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7876 | p, 0, need_pad->size)) | |
7877 | return FALSE; | |
7878 | ||
7879 | need_pad->contents = p; | |
7880 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7881 | } | |
7882 | else | |
7883 | { | |
7884 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7885 | if (p == NULL) | |
7886 | return FALSE; | |
7887 | ||
7888 | need_pad->contents = p; | |
7889 | } | |
7890 | ||
7891 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7892 | need_pad->size += 8; | |
7893 | } | |
7894 | ||
411e1bfb AM |
7895 | return TRUE; |
7896 | } | |
7897 | ||
e1918d23 | 7898 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7899 | |
e1918d23 | 7900 | asection * |
e7d1c40c | 7901 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7902 | { |
411e1bfb AM |
7903 | struct ppc_link_hash_table *htab; |
7904 | ||
411e1bfb | 7905 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7906 | if (htab == NULL) |
7907 | return NULL; | |
7908 | ||
ee67d69a AM |
7909 | if (abiversion (info->output_bfd) == 1) |
7910 | htab->opd_abi = 1; | |
7911 | ||
e7d1c40c | 7912 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7913 | htab->do_multi_toc = 0; |
7914 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7915 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7916 | |
3a71aa26 AM |
7917 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7918 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7919 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7920 | /* Move dynamic linking info to the function descriptor sym. */ |
7921 | if (htab->tls_get_addr != NULL) | |
7922 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7923 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7924 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7925 | FALSE, FALSE, TRUE)); | |
e7d1c40c | 7926 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
7927 | { |
7928 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7929 | ||
7930 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7931 | FALSE, FALSE, TRUE); | |
7932 | if (opt != NULL) | |
7933 | func_desc_adjust (opt, info); | |
7934 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7935 | FALSE, FALSE, TRUE); | |
7936 | if (opt_fd != NULL | |
7937 | && (opt_fd->root.type == bfd_link_hash_defined | |
7938 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7939 | { | |
7940 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7941 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7942 | be calling __tls_get_addr via a plt call stub, then | |
7943 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7944 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7945 | if (htab->elf.dynamic_sections_created | |
7946 | && tga_fd != NULL | |
7947 | && (tga_fd->type == STT_FUNC | |
7948 | || tga_fd->needs_plt) | |
7949 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7950 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7951 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7952 | { | |
7953 | struct plt_entry *ent; | |
7954 | ||
7955 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7956 | if (ent->plt.refcount > 0) | |
7957 | break; | |
7958 | if (ent != NULL) | |
7959 | { | |
7960 | tga_fd->root.type = bfd_link_hash_indirect; | |
7961 | tga_fd->root.u.i.link = &opt_fd->root; | |
7962 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7963 | if (opt_fd->dynindx != -1) | |
7964 | { | |
7965 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7966 | opt_fd->dynindx = -1; | |
7967 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7968 | opt_fd->dynstr_index); | |
7969 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7970 | return NULL; |
a7f2871e AM |
7971 | } |
7972 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7973 | tga = &htab->tls_get_addr->elf; | |
7974 | if (opt != NULL && tga != NULL) | |
7975 | { | |
7976 | tga->root.type = bfd_link_hash_indirect; | |
7977 | tga->root.u.i.link = &opt->root; | |
7978 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7979 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7980 | tga->forced_local); | |
7981 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7982 | } | |
7983 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7984 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7985 | if (htab->tls_get_addr != NULL) | |
7986 | { | |
7987 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7988 | htab->tls_get_addr->is_func = 1; | |
7989 | } | |
7990 | } | |
7991 | } | |
7992 | } | |
7993 | else | |
e7d1c40c | 7994 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 7995 | } |
33c0ec9d | 7996 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7997 | } |
8387904d | 7998 | |
3a71aa26 AM |
7999 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8000 | HASH1 or HASH2. */ | |
8387904d | 8001 | |
3a71aa26 AM |
8002 | static bfd_boolean |
8003 | branch_reloc_hash_match (const bfd *ibfd, | |
8004 | const Elf_Internal_Rela *rel, | |
8005 | const struct ppc_link_hash_entry *hash1, | |
8006 | const struct ppc_link_hash_entry *hash2) | |
8007 | { | |
8008 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8009 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8010 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8011 | ||
e054468f | 8012 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8013 | { |
3a71aa26 AM |
8014 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8015 | struct elf_link_hash_entry *h; | |
8387904d | 8016 | |
3a71aa26 | 8017 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8018 | h = elf_follow_link (h); |
3a71aa26 AM |
8019 | if (h == &hash1->elf || h == &hash2->elf) |
8020 | return TRUE; | |
a48ebf4d | 8021 | } |
3a71aa26 | 8022 | return FALSE; |
951fd09b | 8023 | } |
411e1bfb | 8024 | |
951fd09b AM |
8025 | /* Run through all the TLS relocs looking for optimization |
8026 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8027 | a preliminary section layout so that we know the TLS segment | |
8028 | offsets. We can't optimize earlier because some optimizations need | |
8029 | to know the tp offset, and we need to optimize before allocating | |
8030 | dynamic relocations. */ | |
8031 | ||
8032 | bfd_boolean | |
33c0ec9d | 8033 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8034 | { |
8035 | bfd *ibfd; | |
8036 | asection *sec; | |
8037 | struct ppc_link_hash_table *htab; | |
663a1470 | 8038 | unsigned char *toc_ref; |
102890f0 | 8039 | int pass; |
951fd09b | 8040 | |
1d483afe | 8041 | if (info->relocatable || !info->executable) |
411e1bfb AM |
8042 | return TRUE; |
8043 | ||
951fd09b | 8044 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8045 | if (htab == NULL) |
8046 | return FALSE; | |
8047 | ||
663a1470 AM |
8048 | /* Make two passes over the relocs. On the first pass, mark toc |
8049 | entries involved with tls relocs, and check that tls relocs | |
8050 | involved in setting up a tls_get_addr call are indeed followed by | |
8051 | such a call. If they are not, we can't do any tls optimization. | |
8052 | On the second pass twiddle tls_mask flags to notify | |
8053 | relocate_section that optimization can be done, and adjust got | |
8054 | and plt refcounts. */ | |
8055 | toc_ref = NULL; | |
8056 | for (pass = 0; pass < 2; ++pass) | |
8057 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8058 | { | |
8059 | Elf_Internal_Sym *locsyms = NULL; | |
8060 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8061 | ||
102890f0 AM |
8062 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8063 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8064 | { | |
8065 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8066 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8067 | |
102890f0 AM |
8068 | /* Read the relocations. */ |
8069 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8070 | info->keep_memory); | |
8071 | if (relstart == NULL) | |
2915c55b JK |
8072 | { |
8073 | free (toc_ref); | |
8074 | return FALSE; | |
8075 | } | |
411e1bfb | 8076 | |
102890f0 AM |
8077 | relend = relstart + sec->reloc_count; |
8078 | for (rel = relstart; rel < relend; rel++) | |
8079 | { | |
8080 | enum elf_ppc64_reloc_type r_type; | |
8081 | unsigned long r_symndx; | |
8082 | struct elf_link_hash_entry *h; | |
8083 | Elf_Internal_Sym *sym; | |
8084 | asection *sym_sec; | |
f961d9dd AM |
8085 | unsigned char *tls_mask; |
8086 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8087 | bfd_vma value; |
8088 | bfd_boolean ok_tprel, is_local; | |
8089 | long toc_ref_index = 0; | |
8090 | int expecting_tls_get_addr = 0; | |
663a1470 | 8091 | bfd_boolean ret = FALSE; |
411e1bfb | 8092 | |
102890f0 AM |
8093 | r_symndx = ELF64_R_SYM (rel->r_info); |
8094 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8095 | r_symndx, ibfd)) | |
8096 | { | |
8097 | err_free_rel: | |
8098 | if (elf_section_data (sec)->relocs != relstart) | |
8099 | free (relstart); | |
8100 | if (toc_ref != NULL) | |
8101 | free (toc_ref); | |
8102 | if (locsyms != NULL | |
0ffa91dd | 8103 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8104 | != (unsigned char *) locsyms)) |
8105 | free (locsyms); | |
663a1470 | 8106 | return ret; |
102890f0 | 8107 | } |
411e1bfb | 8108 | |
102890f0 AM |
8109 | if (h != NULL) |
8110 | { | |
766bc656 AM |
8111 | if (h->root.type == bfd_link_hash_defined |
8112 | || h->root.type == bfd_link_hash_defweak) | |
8113 | value = h->root.u.def.value; | |
8114 | else if (h->root.type == bfd_link_hash_undefweak) | |
8115 | value = 0; | |
8116 | else | |
663a1470 AM |
8117 | { |
8118 | found_tls_get_addr_arg = 0; | |
8119 | continue; | |
8120 | } | |
102890f0 AM |
8121 | } |
8122 | else | |
8123 | /* Symbols referenced by TLS relocs must be of type | |
8124 | STT_TLS. So no need for .opd local sym adjust. */ | |
8125 | value = sym->st_value; | |
8126 | ||
8127 | ok_tprel = FALSE; | |
8128 | is_local = FALSE; | |
8129 | if (h == NULL | |
8130 | || !h->def_dynamic) | |
8131 | { | |
8132 | is_local = TRUE; | |
766bc656 AM |
8133 | if (h != NULL |
8134 | && h->root.type == bfd_link_hash_undefweak) | |
8135 | ok_tprel = TRUE; | |
8136 | else | |
8137 | { | |
8138 | value += sym_sec->output_offset; | |
8139 | value += sym_sec->output_section->vma; | |
8140 | value -= htab->elf.tls_sec->vma; | |
8141 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8142 | < (bfd_vma) 1 << 32); | |
8143 | } | |
102890f0 | 8144 | } |
951fd09b | 8145 | |
102890f0 | 8146 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8147 | /* If this section has old-style __tls_get_addr calls |
8148 | without marker relocs, then check that each | |
8149 | __tls_get_addr call reloc is preceded by a reloc | |
8150 | that conceivably belongs to the __tls_get_addr arg | |
8151 | setup insn. If we don't find matching arg setup | |
8152 | relocs, don't do any tls optimization. */ | |
8153 | if (pass == 0 | |
8154 | && sec->has_tls_get_addr_call | |
8155 | && h != NULL | |
8156 | && (h == &htab->tls_get_addr->elf | |
8157 | || h == &htab->tls_get_addr_fd->elf) | |
8158 | && !found_tls_get_addr_arg | |
8159 | && is_branch_reloc (r_type)) | |
8160 | { | |
25f53a85 | 8161 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8162 | "TLS optimization disabled\n"), |
8163 | ibfd, sec, rel->r_offset); | |
8164 | ret = TRUE; | |
8165 | goto err_free_rel; | |
8166 | } | |
8167 | ||
8168 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8169 | switch (r_type) |
8170 | { | |
8171 | case R_PPC64_GOT_TLSLD16: | |
8172 | case R_PPC64_GOT_TLSLD16_LO: | |
8173 | expecting_tls_get_addr = 1; | |
663a1470 | 8174 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8175 | /* Fall thru */ |
8176 | ||
8177 | case R_PPC64_GOT_TLSLD16_HI: | |
8178 | case R_PPC64_GOT_TLSLD16_HA: | |
8179 | /* These relocs should never be against a symbol | |
8180 | defined in a shared lib. Leave them alone if | |
8181 | that turns out to be the case. */ | |
8182 | if (!is_local) | |
8183 | continue; | |
411e1bfb | 8184 | |
102890f0 | 8185 | /* LD -> LE */ |
411e1bfb | 8186 | tls_set = 0; |
102890f0 AM |
8187 | tls_clear = TLS_LD; |
8188 | tls_type = TLS_TLS | TLS_LD; | |
8189 | break; | |
411e1bfb | 8190 | |
102890f0 AM |
8191 | case R_PPC64_GOT_TLSGD16: |
8192 | case R_PPC64_GOT_TLSGD16_LO: | |
8193 | expecting_tls_get_addr = 1; | |
663a1470 | 8194 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8195 | /* Fall thru */ |
8196 | ||
8197 | case R_PPC64_GOT_TLSGD16_HI: | |
8198 | case R_PPC64_GOT_TLSGD16_HA: | |
8199 | if (ok_tprel) | |
8200 | /* GD -> LE */ | |
411e1bfb | 8201 | tls_set = 0; |
102890f0 AM |
8202 | else |
8203 | /* GD -> IE */ | |
8204 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8205 | tls_clear = TLS_GD; | |
8206 | tls_type = TLS_TLS | TLS_GD; | |
8207 | break; | |
8208 | ||
8209 | case R_PPC64_GOT_TPREL16_DS: | |
8210 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8211 | case R_PPC64_GOT_TPREL16_HI: | |
8212 | case R_PPC64_GOT_TPREL16_HA: | |
8213 | if (ok_tprel) | |
8214 | { | |
8215 | /* IE -> LE */ | |
8216 | tls_set = 0; | |
8217 | tls_clear = TLS_TPREL; | |
8218 | tls_type = TLS_TLS | TLS_TPREL; | |
8219 | break; | |
8220 | } | |
411e1bfb AM |
8221 | continue; |
8222 | ||
727fc41e AM |
8223 | case R_PPC64_TLSGD: |
8224 | case R_PPC64_TLSLD: | |
663a1470 AM |
8225 | found_tls_get_addr_arg = 1; |
8226 | /* Fall thru */ | |
8227 | ||
8228 | case R_PPC64_TLS: | |
8229 | case R_PPC64_TOC16: | |
8230 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8231 | if (sym_sec == NULL || sym_sec != toc) |
8232 | continue; | |
8233 | ||
8234 | /* Mark this toc entry as referenced by a TLS | |
8235 | code sequence. We can do that now in the | |
8236 | case of R_PPC64_TLS, and after checking for | |
8237 | tls_get_addr for the TOC16 relocs. */ | |
8238 | if (toc_ref == NULL) | |
663a1470 AM |
8239 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8240 | if (toc_ref == NULL) | |
8241 | goto err_free_rel; | |
8242 | ||
102890f0 AM |
8243 | if (h != NULL) |
8244 | value = h->root.u.def.value; | |
8245 | else | |
8246 | value = sym->st_value; | |
8247 | value += rel->r_addend; | |
8248 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 8249 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8250 | if (r_type == R_PPC64_TLS |
8251 | || r_type == R_PPC64_TLSGD | |
8252 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8253 | { |
8254 | toc_ref[toc_ref_index] = 1; | |
8255 | continue; | |
8256 | } | |
8257 | ||
8258 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8259 | continue; | |
8260 | ||
8261 | tls_set = 0; | |
8262 | tls_clear = 0; | |
8263 | expecting_tls_get_addr = 2; | |
8264 | break; | |
8265 | ||
8266 | case R_PPC64_TPREL64: | |
8267 | if (pass == 0 | |
8268 | || sec != toc | |
8269 | || toc_ref == NULL | |
663a1470 | 8270 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8271 | continue; |
8272 | if (ok_tprel) | |
8273 | { | |
8274 | /* IE -> LE */ | |
8275 | tls_set = TLS_EXPLICIT; | |
8276 | tls_clear = TLS_TPREL; | |
8277 | break; | |
8278 | } | |
8279 | continue; | |
8280 | ||
8281 | case R_PPC64_DTPMOD64: | |
8282 | if (pass == 0 | |
8283 | || sec != toc | |
8284 | || toc_ref == NULL | |
663a1470 | 8285 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8286 | continue; |
8287 | if (rel + 1 < relend | |
8288 | && (rel[1].r_info | |
8289 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8290 | && rel[1].r_offset == rel->r_offset + 8) | |
8291 | { | |
8292 | if (ok_tprel) | |
8293 | /* GD -> LE */ | |
8294 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8295 | else | |
8296 | /* GD -> IE */ | |
8297 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8298 | tls_clear = TLS_GD; | |
8299 | } | |
8300 | else | |
8301 | { | |
8302 | if (!is_local) | |
8303 | continue; | |
8304 | ||
8305 | /* LD -> LE */ | |
8306 | tls_set = TLS_EXPLICIT; | |
8307 | tls_clear = TLS_LD; | |
8308 | } | |
8309 | break; | |
8310 | ||
8311 | default: | |
8312 | continue; | |
8313 | } | |
8314 | ||
8315 | if (pass == 0) | |
8316 | { | |
727fc41e AM |
8317 | if (!expecting_tls_get_addr |
8318 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8319 | continue; |
8320 | ||
3a71aa26 AM |
8321 | if (rel + 1 < relend |
8322 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8323 | htab->tls_get_addr, | |
8324 | htab->tls_get_addr_fd)) | |
102890f0 | 8325 | { |
3a71aa26 | 8326 | if (expecting_tls_get_addr == 2) |
102890f0 | 8327 | { |
3a71aa26 | 8328 | /* Check for toc tls entries. */ |
f961d9dd | 8329 | unsigned char *toc_tls; |
3a71aa26 AM |
8330 | int retval; |
8331 | ||
8332 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8333 | &locsyms, | |
8334 | rel, ibfd); | |
8335 | if (retval == 0) | |
8336 | goto err_free_rel; | |
663a1470 AM |
8337 | if (toc_tls != NULL) |
8338 | { | |
8339 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8340 | found_tls_get_addr_arg = 1; | |
8341 | if (retval > 1) | |
8342 | toc_ref[toc_ref_index] = 1; | |
8343 | } | |
102890f0 | 8344 | } |
3a71aa26 | 8345 | continue; |
102890f0 AM |
8346 | } |
8347 | ||
8348 | if (expecting_tls_get_addr != 1) | |
8349 | continue; | |
8350 | ||
8351 | /* Uh oh, we didn't find the expected call. We | |
8352 | could just mark this symbol to exclude it | |
8353 | from tls optimization but it's safer to skip | |
663a1470 | 8354 | the entire optimization. */ |
25f53a85 | 8355 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8356 | "TLS optimization disabled\n"), |
8357 | ibfd, sec, rel->r_offset); | |
8358 | ret = TRUE; | |
8359 | goto err_free_rel; | |
102890f0 AM |
8360 | } |
8361 | ||
85f7a9cb | 8362 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8363 | { |
8364 | struct plt_entry *ent; | |
8365 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8366 | ent != NULL; | |
8367 | ent = ent->next) | |
8368 | if (ent->addend == 0) | |
411e1bfb | 8369 | { |
102890f0 | 8370 | if (ent->plt.refcount > 0) |
30038c59 | 8371 | { |
102890f0 AM |
8372 | ent->plt.refcount -= 1; |
8373 | expecting_tls_get_addr = 0; | |
30038c59 | 8374 | } |
102890f0 | 8375 | break; |
411e1bfb | 8376 | } |
102890f0 | 8377 | } |
411e1bfb | 8378 | |
85f7a9cb | 8379 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8380 | { |
8381 | struct plt_entry *ent; | |
8382 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8383 | ent != NULL; | |
8384 | ent = ent->next) | |
8385 | if (ent->addend == 0) | |
411e1bfb | 8386 | { |
102890f0 AM |
8387 | if (ent->plt.refcount > 0) |
8388 | ent->plt.refcount -= 1; | |
8389 | break; | |
411e1bfb | 8390 | } |
102890f0 | 8391 | } |
411e1bfb | 8392 | |
102890f0 | 8393 | if (tls_clear == 0) |
30038c59 AM |
8394 | continue; |
8395 | ||
102890f0 AM |
8396 | if ((tls_set & TLS_EXPLICIT) == 0) |
8397 | { | |
8398 | struct got_entry *ent; | |
411e1bfb | 8399 | |
102890f0 AM |
8400 | /* Adjust got entry for this reloc. */ |
8401 | if (h != NULL) | |
8402 | ent = h->got.glist; | |
8403 | else | |
8404 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8405 | |
102890f0 AM |
8406 | for (; ent != NULL; ent = ent->next) |
8407 | if (ent->addend == rel->r_addend | |
8408 | && ent->owner == ibfd | |
8409 | && ent->tls_type == tls_type) | |
8410 | break; | |
8411 | if (ent == NULL) | |
8412 | abort (); | |
411e1bfb | 8413 | |
102890f0 AM |
8414 | if (tls_set == 0) |
8415 | { | |
8416 | /* We managed to get rid of a got entry. */ | |
8417 | if (ent->got.refcount > 0) | |
8418 | ent->got.refcount -= 1; | |
8419 | } | |
8420 | } | |
8421 | else | |
8422 | { | |
8423 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8424 | we'll lose one or two dyn relocs. */ | |
8425 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8426 | NULL, h, sym)) |
102890f0 | 8427 | return FALSE; |
411e1bfb | 8428 | |
102890f0 AM |
8429 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8430 | { | |
8431 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8432 | NULL, h, sym)) |
102890f0 AM |
8433 | return FALSE; |
8434 | } | |
8435 | } | |
411e1bfb | 8436 | |
102890f0 AM |
8437 | *tls_mask |= tls_set; |
8438 | *tls_mask &= ~tls_clear; | |
8439 | } | |
8c1d1bb8 | 8440 | |
102890f0 AM |
8441 | if (elf_section_data (sec)->relocs != relstart) |
8442 | free (relstart); | |
8443 | } | |
411e1bfb | 8444 | |
663a1470 AM |
8445 | if (locsyms != NULL |
8446 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8447 | { | |
8448 | if (!info->keep_memory) | |
8449 | free (locsyms); | |
8450 | else | |
8451 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8452 | } | |
8453 | } | |
411e1bfb | 8454 | |
663a1470 AM |
8455 | if (toc_ref != NULL) |
8456 | free (toc_ref); | |
b34976b6 | 8457 | return TRUE; |
1e2f5b6e | 8458 | } |
b34976b6 | 8459 | |
c5614fa4 AM |
8460 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8461 | the values of any global symbols in a toc section that has been | |
8462 | edited. Globals in toc sections should be a rarity, so this function | |
8463 | sets a flag if any are found in toc sections other than the one just | |
8464 | edited, so that futher hash table traversals can be avoided. */ | |
8465 | ||
8466 | struct adjust_toc_info | |
8467 | { | |
8468 | asection *toc; | |
8469 | unsigned long *skip; | |
8470 | bfd_boolean global_toc_syms; | |
8471 | }; | |
8472 | ||
ba761f19 AM |
8473 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8474 | ||
c5614fa4 AM |
8475 | static bfd_boolean |
8476 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8477 | { | |
8478 | struct ppc_link_hash_entry *eh; | |
8479 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8480 | unsigned long i; |
c5614fa4 | 8481 | |
c5614fa4 AM |
8482 | if (h->root.type != bfd_link_hash_defined |
8483 | && h->root.type != bfd_link_hash_defweak) | |
8484 | return TRUE; | |
8485 | ||
8486 | eh = (struct ppc_link_hash_entry *) h; | |
8487 | if (eh->adjust_done) | |
8488 | return TRUE; | |
8489 | ||
8490 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8491 | { | |
854b41e7 AM |
8492 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8493 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8494 | else |
854b41e7 AM |
8495 | i = eh->elf.root.u.def.value >> 3; |
8496 | ||
ba761f19 | 8497 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8498 | { |
8499 | (*_bfd_error_handler) | |
854b41e7 AM |
8500 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8501 | do | |
8502 | ++i; | |
ba761f19 | 8503 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8504 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8505 | } |
854b41e7 AM |
8506 | |
8507 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8508 | eh->adjust_done = 1; |
8509 | } | |
8510 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8511 | toc_inf->global_toc_syms = TRUE; | |
8512 | ||
8513 | return TRUE; | |
8514 | } | |
8515 | ||
560c8763 AM |
8516 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8517 | ||
8518 | static bfd_boolean | |
8519 | ok_lo_toc_insn (unsigned int insn) | |
8520 | { | |
8521 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8522 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8523 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8524 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8525 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8526 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8527 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8528 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8529 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8530 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8531 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8532 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8533 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8534 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8535 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8536 | && (insn & 3) != 1) | |
8537 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8538 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8539 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8540 | } | |
8541 | ||
c5614fa4 AM |
8542 | /* Examine all relocs referencing .toc sections in order to remove |
8543 | unused .toc entries. */ | |
8544 | ||
8545 | bfd_boolean | |
33c0ec9d | 8546 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8547 | { |
8548 | bfd *ibfd; | |
8549 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8550 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8551 | |
67f0cbdb | 8552 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8553 | toc_inf.global_toc_syms = TRUE; |
8554 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8555 | { | |
8556 | asection *toc, *sec; | |
8557 | Elf_Internal_Shdr *symtab_hdr; | |
8558 | Elf_Internal_Sym *local_syms; | |
425b145b | 8559 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8560 | unsigned long *skip, *drop; |
8561 | unsigned char *used; | |
8562 | unsigned char *keep, last, some_unused; | |
8563 | ||
854b41e7 AM |
8564 | if (!is_ppc64_elf (ibfd)) |
8565 | continue; | |
8566 | ||
c5614fa4 AM |
8567 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8568 | if (toc == NULL | |
92b7a70f | 8569 | || toc->size == 0 |
dbaa2011 AM |
8570 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8571 | || discarded_section (toc)) | |
c5614fa4 AM |
8572 | continue; |
8573 | ||
425b145b | 8574 | toc_relocs = NULL; |
c5614fa4 | 8575 | local_syms = NULL; |
0ffa91dd | 8576 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8577 | |
8578 | /* Look at sections dropped from the final link. */ | |
8579 | skip = NULL; | |
8580 | relstart = NULL; | |
8581 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8582 | { | |
8583 | if (sec->reloc_count == 0 | |
dbaa2011 | 8584 | || !discarded_section (sec) |
c5614fa4 AM |
8585 | || get_opd_info (sec) |
8586 | || (sec->flags & SEC_ALLOC) == 0 | |
8587 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8588 | continue; | |
8589 | ||
8590 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8591 | if (relstart == NULL) | |
8592 | goto error_ret; | |
8593 | ||
8594 | /* Run through the relocs to see which toc entries might be | |
8595 | unused. */ | |
8596 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8597 | { | |
8598 | enum elf_ppc64_reloc_type r_type; | |
8599 | unsigned long r_symndx; | |
8600 | asection *sym_sec; | |
8601 | struct elf_link_hash_entry *h; | |
8602 | Elf_Internal_Sym *sym; | |
8603 | bfd_vma val; | |
8604 | ||
8605 | r_type = ELF64_R_TYPE (rel->r_info); | |
8606 | switch (r_type) | |
8607 | { | |
8608 | default: | |
8609 | continue; | |
8610 | ||
8611 | case R_PPC64_TOC16: | |
8612 | case R_PPC64_TOC16_LO: | |
8613 | case R_PPC64_TOC16_HI: | |
8614 | case R_PPC64_TOC16_HA: | |
8615 | case R_PPC64_TOC16_DS: | |
8616 | case R_PPC64_TOC16_LO_DS: | |
8617 | break; | |
8618 | } | |
8619 | ||
8620 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8621 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8622 | r_symndx, ibfd)) | |
8623 | goto error_ret; | |
8624 | ||
8625 | if (sym_sec != toc) | |
8626 | continue; | |
8627 | ||
8628 | if (h != NULL) | |
8629 | val = h->root.u.def.value; | |
8630 | else | |
8631 | val = sym->st_value; | |
8632 | val += rel->r_addend; | |
8633 | ||
8634 | if (val >= toc->size) | |
8635 | continue; | |
8636 | ||
8637 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8638 | If not, don't mark as unused. */ | |
8639 | if (val & 7) | |
8640 | continue; | |
8641 | ||
8642 | if (skip == NULL) | |
8643 | { | |
854b41e7 | 8644 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8645 | if (skip == NULL) |
8646 | goto error_ret; | |
8647 | } | |
8648 | ||
ba761f19 | 8649 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8650 | } |
8651 | ||
8652 | if (elf_section_data (sec)->relocs != relstart) | |
8653 | free (relstart); | |
8654 | } | |
8655 | ||
ba761f19 AM |
8656 | /* For largetoc loads of address constants, we can convert |
8657 | . addis rx,2,addr@got@ha | |
8658 | . ld ry,addr@got@l(rx) | |
8659 | to | |
8660 | . addis rx,2,addr@toc@ha | |
8661 | . addi ry,rx,addr@toc@l | |
8662 | when addr is within 2G of the toc pointer. This then means | |
8663 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8664 | |
ba761f19 AM |
8665 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8666 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8667 | && toc->reloc_count != 0) | |
8668 | { | |
8669 | /* Read toc relocs. */ | |
425b145b AM |
8670 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8671 | info->keep_memory); | |
8672 | if (toc_relocs == NULL) | |
ba761f19 AM |
8673 | goto error_ret; |
8674 | ||
425b145b | 8675 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8676 | { |
8677 | enum elf_ppc64_reloc_type r_type; | |
8678 | unsigned long r_symndx; | |
8679 | asection *sym_sec; | |
8680 | struct elf_link_hash_entry *h; | |
8681 | Elf_Internal_Sym *sym; | |
8682 | bfd_vma val, addr; | |
8683 | ||
8684 | r_type = ELF64_R_TYPE (rel->r_info); | |
8685 | if (r_type != R_PPC64_ADDR64) | |
8686 | continue; | |
8687 | ||
8688 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8689 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8690 | r_symndx, ibfd)) | |
8691 | goto error_ret; | |
8692 | ||
425b145b | 8693 | if (sym_sec == NULL |
dbaa2011 | 8694 | || discarded_section (sym_sec)) |
425b145b AM |
8695 | continue; |
8696 | ||
afe397ea | 8697 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8698 | continue; |
8699 | ||
8700 | if (h != NULL) | |
bddc25c9 AM |
8701 | { |
8702 | if (h->type == STT_GNU_IFUNC) | |
8703 | continue; | |
8704 | val = h->root.u.def.value; | |
8705 | } | |
ba761f19 | 8706 | else |
bddc25c9 AM |
8707 | { |
8708 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8709 | continue; | |
8710 | val = sym->st_value; | |
8711 | } | |
ba761f19 AM |
8712 | val += rel->r_addend; |
8713 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8714 | ||
8715 | /* We don't yet know the exact toc pointer value, but we | |
8716 | know it will be somewhere in the toc section. Don't | |
8717 | optimize if the difference from any possible toc | |
8718 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8719 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8720 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8721 | continue; | |
8722 | ||
8723 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8724 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8725 | continue; | |
8726 | ||
8727 | if (skip == NULL) | |
8728 | { | |
8729 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8730 | if (skip == NULL) | |
8731 | goto error_ret; | |
8732 | } | |
8733 | ||
8734 | skip[rel->r_offset >> 3] | |
425b145b | 8735 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8736 | } |
ba761f19 AM |
8737 | } |
8738 | ||
c5614fa4 AM |
8739 | if (skip == NULL) |
8740 | continue; | |
8741 | ||
8742 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8743 | if (used == NULL) | |
8744 | { | |
8745 | error_ret: | |
8746 | if (local_syms != NULL | |
8747 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8748 | free (local_syms); | |
8749 | if (sec != NULL | |
8750 | && relstart != NULL | |
8751 | && elf_section_data (sec)->relocs != relstart) | |
8752 | free (relstart); | |
425b145b AM |
8753 | if (toc_relocs != NULL |
8754 | && elf_section_data (toc)->relocs != toc_relocs) | |
8755 | free (toc_relocs); | |
c5614fa4 AM |
8756 | if (skip != NULL) |
8757 | free (skip); | |
8758 | return FALSE; | |
8759 | } | |
8760 | ||
30038c59 AM |
8761 | /* Now check all kept sections that might reference the toc. |
8762 | Check the toc itself last. */ | |
8763 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8764 | : ibfd->sections); | |
c5614fa4 | 8765 | sec != NULL; |
c5614fa4 | 8766 | sec = (sec == toc ? NULL |
c5614fa4 | 8767 | : sec->next == NULL ? toc |
30038c59 | 8768 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8769 | : sec->next)) |
8770 | { | |
8771 | int repeat; | |
8772 | ||
8773 | if (sec->reloc_count == 0 | |
dbaa2011 | 8774 | || discarded_section (sec) |
c5614fa4 AM |
8775 | || get_opd_info (sec) |
8776 | || (sec->flags & SEC_ALLOC) == 0 | |
8777 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8778 | continue; | |
8779 | ||
854b41e7 AM |
8780 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8781 | info->keep_memory); | |
c5614fa4 | 8782 | if (relstart == NULL) |
2915c55b JK |
8783 | { |
8784 | free (used); | |
8785 | goto error_ret; | |
8786 | } | |
c5614fa4 AM |
8787 | |
8788 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8789 | do |
d4f1ee75 AM |
8790 | { |
8791 | repeat = 0; | |
8792 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8793 | { | |
8794 | enum elf_ppc64_reloc_type r_type; | |
8795 | unsigned long r_symndx; | |
8796 | asection *sym_sec; | |
8797 | struct elf_link_hash_entry *h; | |
8798 | Elf_Internal_Sym *sym; | |
8799 | bfd_vma val; | |
8800 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8801 | |
d4f1ee75 AM |
8802 | r_type = ELF64_R_TYPE (rel->r_info); |
8803 | switch (r_type) | |
8804 | { | |
8805 | default: | |
8806 | insn_check = no_check; | |
8807 | break; | |
98528052 | 8808 | |
d4f1ee75 AM |
8809 | case R_PPC64_GOT_TLSLD16_HA: |
8810 | case R_PPC64_GOT_TLSGD16_HA: | |
8811 | case R_PPC64_GOT_TPREL16_HA: | |
8812 | case R_PPC64_GOT_DTPREL16_HA: | |
8813 | case R_PPC64_GOT16_HA: | |
8814 | case R_PPC64_TOC16_HA: | |
8815 | insn_check = check_ha; | |
8816 | break; | |
98528052 | 8817 | |
d4f1ee75 AM |
8818 | case R_PPC64_GOT_TLSLD16_LO: |
8819 | case R_PPC64_GOT_TLSGD16_LO: | |
8820 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8821 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8822 | case R_PPC64_GOT16_LO: | |
8823 | case R_PPC64_GOT16_LO_DS: | |
8824 | case R_PPC64_TOC16_LO: | |
8825 | case R_PPC64_TOC16_LO_DS: | |
8826 | insn_check = check_lo; | |
8827 | break; | |
8828 | } | |
560c8763 | 8829 | |
d4f1ee75 AM |
8830 | if (insn_check != no_check) |
8831 | { | |
8832 | bfd_vma off = rel->r_offset & ~3; | |
8833 | unsigned char buf[4]; | |
8834 | unsigned int insn; | |
c5614fa4 | 8835 | |
d4f1ee75 AM |
8836 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8837 | { | |
8838 | free (used); | |
8839 | goto error_ret; | |
8840 | } | |
8841 | insn = bfd_get_32 (ibfd, buf); | |
8842 | if (insn_check == check_lo | |
8843 | ? !ok_lo_toc_insn (insn) | |
8844 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8845 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8846 | { | |
8847 | char str[12]; | |
8848 | ||
8849 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8850 | sprintf (str, "%#08x", insn); | |
8851 | info->callbacks->einfo | |
8852 | (_("%P: %H: toc optimization is not supported for" | |
8853 | " %s instruction.\n"), | |
8854 | ibfd, sec, rel->r_offset & ~3, str); | |
8855 | } | |
8856 | } | |
c5614fa4 | 8857 | |
d4f1ee75 AM |
8858 | switch (r_type) |
8859 | { | |
8860 | case R_PPC64_TOC16: | |
8861 | case R_PPC64_TOC16_LO: | |
8862 | case R_PPC64_TOC16_HI: | |
8863 | case R_PPC64_TOC16_HA: | |
8864 | case R_PPC64_TOC16_DS: | |
8865 | case R_PPC64_TOC16_LO_DS: | |
8866 | /* In case we're taking addresses of toc entries. */ | |
8867 | case R_PPC64_ADDR64: | |
8868 | break; | |
c5614fa4 | 8869 | |
d4f1ee75 AM |
8870 | default: |
8871 | continue; | |
8872 | } | |
c5614fa4 | 8873 | |
d4f1ee75 AM |
8874 | r_symndx = ELF64_R_SYM (rel->r_info); |
8875 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8876 | r_symndx, ibfd)) | |
8877 | { | |
8878 | free (used); | |
8879 | goto error_ret; | |
8880 | } | |
c5614fa4 | 8881 | |
d4f1ee75 AM |
8882 | if (sym_sec != toc) |
8883 | continue; | |
c5614fa4 | 8884 | |
d4f1ee75 AM |
8885 | if (h != NULL) |
8886 | val = h->root.u.def.value; | |
8887 | else | |
8888 | val = sym->st_value; | |
8889 | val += rel->r_addend; | |
ba761f19 | 8890 | |
d4f1ee75 AM |
8891 | if (val >= toc->size) |
8892 | continue; | |
ba761f19 | 8893 | |
d4f1ee75 AM |
8894 | if ((skip[val >> 3] & can_optimize) != 0) |
8895 | { | |
8896 | bfd_vma off; | |
8897 | unsigned char opc; | |
8898 | ||
8899 | switch (r_type) | |
8900 | { | |
8901 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8902 | break; |
ba761f19 | 8903 | |
d4f1ee75 AM |
8904 | case R_PPC64_TOC16_LO_DS: |
8905 | off = rel->r_offset; | |
8906 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8907 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8908 | off, 1)) | |
8909 | { | |
8910 | free (used); | |
8911 | goto error_ret; | |
8912 | } | |
8913 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8914 | break; | |
8915 | /* Fall thru */ | |
ba761f19 | 8916 | |
d4f1ee75 AM |
8917 | default: |
8918 | /* Wrong sort of reloc, or not a ld. We may | |
8919 | as well clear ref_from_discarded too. */ | |
8920 | skip[val >> 3] = 0; | |
8921 | } | |
8922 | } | |
8923 | ||
8924 | if (sec != toc) | |
8925 | used[val >> 3] = 1; | |
8926 | /* For the toc section, we only mark as used if this | |
8927 | entry itself isn't unused. */ | |
8928 | else if ((used[rel->r_offset >> 3] | |
8929 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8930 | && !used[val >> 3]) | |
8931 | { | |
8932 | /* Do all the relocs again, to catch reference | |
8933 | chains. */ | |
8934 | repeat = 1; | |
8935 | used[val >> 3] = 1; | |
8936 | } | |
8937 | } | |
8938 | } | |
c5614fa4 | 8939 | while (repeat); |
854b41e7 AM |
8940 | |
8941 | if (elf_section_data (sec)->relocs != relstart) | |
8942 | free (relstart); | |
c5614fa4 AM |
8943 | } |
8944 | ||
8945 | /* Merge the used and skip arrays. Assume that TOC | |
8946 | doublewords not appearing as either used or unused belong | |
8947 | to to an entry more than one doubleword in size. */ | |
8948 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8949 | drop < skip + (toc->size + 7) / 8; | |
8950 | ++drop, ++keep) | |
8951 | { | |
8952 | if (*keep) | |
8953 | { | |
ba761f19 AM |
8954 | *drop &= ~ref_from_discarded; |
8955 | if ((*drop & can_optimize) != 0) | |
8956 | some_unused = 1; | |
c5614fa4 AM |
8957 | last = 0; |
8958 | } | |
b140b010 | 8959 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8960 | { |
8961 | some_unused = 1; | |
ba761f19 | 8962 | last = ref_from_discarded; |
c5614fa4 AM |
8963 | } |
8964 | else | |
8965 | *drop = last; | |
8966 | } | |
8967 | ||
8968 | free (used); | |
8969 | ||
8970 | if (some_unused) | |
8971 | { | |
8972 | bfd_byte *contents, *src; | |
8973 | unsigned long off; | |
d62b3684 | 8974 | Elf_Internal_Sym *sym; |
ba761f19 | 8975 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8976 | |
8977 | /* Shuffle the toc contents, and at the same time convert the | |
8978 | skip array from booleans into offsets. */ | |
8979 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8980 | goto error_ret; | |
8981 | ||
8982 | elf_section_data (toc)->this_hdr.contents = contents; | |
8983 | ||
8984 | for (src = contents, off = 0, drop = skip; | |
8985 | src < contents + toc->size; | |
8986 | src += 8, ++drop) | |
8987 | { | |
ba761f19 AM |
8988 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8989 | off += 8; | |
c5614fa4 AM |
8990 | else if (off != 0) |
8991 | { | |
8992 | *drop = off; | |
8993 | memcpy (src - off, src, 8); | |
8994 | } | |
8995 | } | |
854b41e7 | 8996 | *drop = off; |
c5614fa4 AM |
8997 | toc->rawsize = toc->size; |
8998 | toc->size = src - contents - off; | |
8999 | ||
ba761f19 AM |
9000 | /* Adjust addends for relocs against the toc section sym, |
9001 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9002 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9003 | { | |
9004 | if (sec->reloc_count == 0 | |
dbaa2011 | 9005 | || discarded_section (sec)) |
c5614fa4 AM |
9006 | continue; |
9007 | ||
9008 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9009 | info->keep_memory); |
c5614fa4 AM |
9010 | if (relstart == NULL) |
9011 | goto error_ret; | |
9012 | ||
9013 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9014 | { | |
9015 | enum elf_ppc64_reloc_type r_type; | |
9016 | unsigned long r_symndx; | |
9017 | asection *sym_sec; | |
9018 | struct elf_link_hash_entry *h; | |
854b41e7 | 9019 | bfd_vma val; |
c5614fa4 AM |
9020 | |
9021 | r_type = ELF64_R_TYPE (rel->r_info); | |
9022 | switch (r_type) | |
9023 | { | |
9024 | default: | |
9025 | continue; | |
9026 | ||
9027 | case R_PPC64_TOC16: | |
9028 | case R_PPC64_TOC16_LO: | |
9029 | case R_PPC64_TOC16_HI: | |
9030 | case R_PPC64_TOC16_HA: | |
9031 | case R_PPC64_TOC16_DS: | |
9032 | case R_PPC64_TOC16_LO_DS: | |
9033 | case R_PPC64_ADDR64: | |
9034 | break; | |
9035 | } | |
9036 | ||
9037 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9038 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9039 | r_symndx, ibfd)) | |
9040 | goto error_ret; | |
9041 | ||
ba761f19 | 9042 | if (sym_sec != toc) |
c5614fa4 AM |
9043 | continue; |
9044 | ||
ba761f19 AM |
9045 | if (h != NULL) |
9046 | val = h->root.u.def.value; | |
9047 | else | |
9048 | { | |
9049 | val = sym->st_value; | |
9050 | if (val != 0) | |
9051 | local_toc_syms = TRUE; | |
9052 | } | |
9053 | ||
9054 | val += rel->r_addend; | |
854b41e7 AM |
9055 | |
9056 | if (val > toc->rawsize) | |
9057 | val = toc->rawsize; | |
ba761f19 AM |
9058 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9059 | continue; | |
9060 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9061 | { | |
9062 | Elf_Internal_Rela *tocrel | |
425b145b | 9063 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9064 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9065 | ||
9066 | switch (r_type) | |
9067 | { | |
9068 | case R_PPC64_TOC16_HA: | |
9069 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9070 | break; | |
9071 | ||
9072 | case R_PPC64_TOC16_LO_DS: | |
9073 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9074 | break; | |
9075 | ||
9076 | default: | |
28942f62 AM |
9077 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9078 | ppc_howto_init (); | |
b140b010 | 9079 | info->callbacks->einfo |
bc30df16 | 9080 | (_("%P: %H: %s references " |
b140b010 AM |
9081 | "optimized away TOC entry\n"), |
9082 | ibfd, sec, rel->r_offset, | |
9083 | ppc64_elf_howto_table[r_type]->name); | |
9084 | bfd_set_error (bfd_error_bad_value); | |
9085 | goto error_ret; | |
ba761f19 AM |
9086 | } |
9087 | rel->r_addend = tocrel->r_addend; | |
9088 | elf_section_data (sec)->relocs = relstart; | |
9089 | continue; | |
9090 | } | |
9091 | ||
9092 | if (h != NULL || sym->st_value != 0) | |
9093 | continue; | |
854b41e7 AM |
9094 | |
9095 | rel->r_addend -= skip[val >> 3]; | |
9096 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9097 | } |
854b41e7 AM |
9098 | |
9099 | if (elf_section_data (sec)->relocs != relstart) | |
9100 | free (relstart); | |
c5614fa4 AM |
9101 | } |
9102 | ||
9103 | /* We shouldn't have local or global symbols defined in the TOC, | |
9104 | but handle them anyway. */ | |
df22d223 AM |
9105 | if (local_syms != NULL) |
9106 | for (sym = local_syms; | |
9107 | sym < local_syms + symtab_hdr->sh_info; | |
9108 | ++sym) | |
9109 | if (sym->st_value != 0 | |
9110 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9111 | { | |
9112 | unsigned long i; | |
854b41e7 | 9113 | |
df22d223 AM |
9114 | if (sym->st_value > toc->rawsize) |
9115 | i = toc->rawsize >> 3; | |
9116 | else | |
9117 | i = sym->st_value >> 3; | |
854b41e7 | 9118 | |
df22d223 AM |
9119 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9120 | { | |
9121 | if (local_toc_syms) | |
9122 | (*_bfd_error_handler) | |
9123 | (_("%s defined on removed toc entry"), | |
9124 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9125 | do | |
9126 | ++i; | |
9127 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9128 | sym->st_value = (bfd_vma) i << 3; | |
9129 | } | |
d62b3684 | 9130 | |
df22d223 AM |
9131 | sym->st_value -= skip[i]; |
9132 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9133 | } | |
c5614fa4 | 9134 | |
854b41e7 | 9135 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9136 | if (toc_inf.global_toc_syms) |
9137 | { | |
9138 | toc_inf.toc = toc; | |
9139 | toc_inf.skip = skip; | |
9140 | toc_inf.global_toc_syms = FALSE; | |
9141 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9142 | &toc_inf); | |
9143 | } | |
854b41e7 AM |
9144 | |
9145 | if (toc->reloc_count != 0) | |
9146 | { | |
d4730f92 | 9147 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9148 | Elf_Internal_Rela *wrel; |
9149 | bfd_size_type sz; | |
9150 | ||
854b41e7 | 9151 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9152 | if (toc_relocs == NULL) |
9153 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9154 | info->keep_memory); | |
9155 | if (toc_relocs == NULL) | |
9156 | goto error_ret; | |
9157 | ||
425b145b AM |
9158 | wrel = toc_relocs; |
9159 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9160 | if ((skip[rel->r_offset >> 3] |
9161 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9162 | { |
9163 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9164 | wrel->r_info = rel->r_info; | |
9165 | wrel->r_addend = rel->r_addend; | |
9166 | ++wrel; | |
9167 | } | |
9168 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9169 | &local_syms, NULL, NULL)) | |
9170 | goto error_ret; | |
9171 | ||
425b145b AM |
9172 | elf_section_data (toc)->relocs = toc_relocs; |
9173 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9174 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9175 | sz = rel_hdr->sh_entsize; | |
9176 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9177 | } |
c5614fa4 | 9178 | } |
28be611c AM |
9179 | else if (toc_relocs != NULL |
9180 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9181 | free (toc_relocs); |
c5614fa4 AM |
9182 | |
9183 | if (local_syms != NULL | |
9184 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9185 | { | |
9186 | if (!info->keep_memory) | |
9187 | free (local_syms); | |
9188 | else | |
9189 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9190 | } | |
9191 | free (skip); | |
9192 | } | |
9193 | ||
9194 | return TRUE; | |
9195 | } | |
9196 | ||
1bbe0902 AM |
9197 | /* Return true iff input section I references the TOC using |
9198 | instructions limited to +/-32k offsets. */ | |
9199 | ||
9200 | bfd_boolean | |
9201 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9202 | { | |
9203 | return (is_ppc64_elf (i->owner) | |
9204 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9205 | } | |
9206 | ||
927be08e AM |
9207 | /* Allocate space for one GOT entry. */ |
9208 | ||
9209 | static void | |
9210 | allocate_got (struct elf_link_hash_entry *h, | |
9211 | struct bfd_link_info *info, | |
9212 | struct got_entry *gent) | |
9213 | { | |
9214 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9215 | bfd_boolean dyn; | |
9216 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9217 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9218 | ? 16 : 8); | |
9219 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9220 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9221 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9222 | ||
9223 | gent->got.offset = got->size; | |
9224 | got->size += entsize; | |
9225 | ||
9226 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9227 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9228 | { |
33e44f2e | 9229 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9230 | htab->got_reli_size += rentsize; |
927be08e | 9231 | } |
19e08130 AM |
9232 | else if ((info->shared |
9233 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
9234 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9235 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9236 | { |
19e08130 | 9237 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9238 | relgot->size += rentsize; |
927be08e AM |
9239 | } |
9240 | } | |
9241 | ||
7865406b AM |
9242 | /* This function merges got entries in the same toc group. */ |
9243 | ||
9244 | static void | |
9245 | merge_got_entries (struct got_entry **pent) | |
9246 | { | |
9247 | struct got_entry *ent, *ent2; | |
9248 | ||
9249 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9250 | if (!ent->is_indirect) | |
9251 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9252 | if (!ent2->is_indirect | |
9253 | && ent2->addend == ent->addend | |
9254 | && ent2->tls_type == ent->tls_type | |
9255 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9256 | { | |
9257 | ent2->is_indirect = TRUE; | |
9258 | ent2->got.ent = ent; | |
9259 | } | |
9260 | } | |
9261 | ||
65f38f15 AM |
9262 | /* Allocate space in .plt, .got and associated reloc sections for |
9263 | dynamic relocs. */ | |
5bd4f169 | 9264 | |
b34976b6 | 9265 | static bfd_boolean |
4ce794b7 | 9266 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9267 | { |
65f38f15 AM |
9268 | struct bfd_link_info *info; |
9269 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9270 | asection *s; |
65f38f15 | 9271 | struct ppc_link_hash_entry *eh; |
6061a67d | 9272 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9273 | struct got_entry **pgent, *gent; |
5bd4f169 | 9274 | |
e92d460e | 9275 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9276 | return TRUE; |
5bd4f169 | 9277 | |
65f38f15 AM |
9278 | info = (struct bfd_link_info *) inf; |
9279 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9280 | if (htab == NULL) |
9281 | return FALSE; | |
5bd4f169 | 9282 | |
e054468f AM |
9283 | if ((htab->elf.dynamic_sections_created |
9284 | && h->dynindx != -1 | |
9285 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
9286 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 9287 | { |
411e1bfb AM |
9288 | struct plt_entry *pent; |
9289 | bfd_boolean doneone = FALSE; | |
9290 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9291 | if (pent->plt.refcount > 0) | |
9292 | { | |
25f23106 AM |
9293 | if (!htab->elf.dynamic_sections_created |
9294 | || h->dynindx == -1) | |
e054468f | 9295 | { |
33e44f2e | 9296 | s = htab->elf.iplt; |
e054468f | 9297 | pent->plt.offset = s->size; |
b9e5796b | 9298 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9299 | s = htab->elf.irelplt; |
e054468f AM |
9300 | } |
9301 | else | |
9302 | { | |
9303 | /* If this is the first .plt entry, make room for the special | |
9304 | first entry. */ | |
33e44f2e | 9305 | s = htab->elf.splt; |
e054468f | 9306 | if (s->size == 0) |
b9e5796b | 9307 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9308 | |
9309 | pent->plt.offset = s->size; | |
9310 | ||
9311 | /* Make room for this entry. */ | |
b9e5796b | 9312 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9313 | |
9314 | /* Make room for the .glink code. */ | |
9315 | s = htab->glink; | |
9316 | if (s->size == 0) | |
9317 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9318 | if (htab->opd_abi) |
9319 | { | |
9320 | /* We need bigger stubs past index 32767. */ | |
9321 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9322 | s->size += 4; | |
9323 | s->size += 2*4; | |
9324 | } | |
9325 | else | |
e054468f | 9326 | s->size += 4; |
e054468f AM |
9327 | |
9328 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9329 | s = htab->elf.srelplt; |
e054468f | 9330 | } |
eea6121a | 9331 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9332 | doneone = TRUE; |
9333 | } | |
9334 | else | |
9335 | pent->plt.offset = (bfd_vma) -1; | |
9336 | if (!doneone) | |
65f38f15 | 9337 | { |
411e1bfb | 9338 | h->plt.plist = NULL; |
f5385ebf | 9339 | h->needs_plt = 0; |
65f38f15 AM |
9340 | } |
9341 | } | |
9342 | else | |
9343 | { | |
411e1bfb | 9344 | h->plt.plist = NULL; |
f5385ebf | 9345 | h->needs_plt = 0; |
65f38f15 AM |
9346 | } |
9347 | ||
951fd09b AM |
9348 | eh = (struct ppc_link_hash_entry *) h; |
9349 | /* Run through the TLS GD got entries first if we're changing them | |
9350 | to TPREL. */ | |
e7b938ca | 9351 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9352 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9353 | if (gent->got.refcount > 0 | |
9354 | && (gent->tls_type & TLS_GD) != 0) | |
9355 | { | |
9356 | /* This was a GD entry that has been converted to TPREL. If | |
9357 | there happens to be a TPREL entry we can use that one. */ | |
9358 | struct got_entry *ent; | |
9359 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9360 | if (ent->got.refcount > 0 | |
9361 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9362 | && ent->addend == gent->addend |
9363 | && ent->owner == gent->owner) | |
951fd09b AM |
9364 | { |
9365 | gent->got.refcount = 0; | |
9366 | break; | |
9367 | } | |
9368 | ||
9369 | /* If not, then we'll be using our own TPREL entry. */ | |
9370 | if (gent->got.refcount != 0) | |
9371 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9372 | } | |
9373 | ||
7865406b AM |
9374 | /* Remove any list entry that won't generate a word in the GOT before |
9375 | we call merge_got_entries. Otherwise we risk merging to empty | |
9376 | entries. */ | |
0b8bcf0d AM |
9377 | pgent = &h->got.glist; |
9378 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9379 | if (gent->got.refcount > 0) |
7865406b AM |
9380 | { |
9381 | if ((gent->tls_type & TLS_LD) != 0 | |
9382 | && !h->def_dynamic) | |
9383 | { | |
9384 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9385 | *pgent = gent->next; | |
9386 | } | |
9387 | else | |
9388 | pgent = &gent->next; | |
9389 | } | |
9390 | else | |
9391 | *pgent = gent->next; | |
9392 | ||
9393 | if (!htab->do_multi_toc) | |
9394 | merge_got_entries (&h->got.glist); | |
9395 | ||
9396 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9397 | if (!gent->is_indirect) | |
411e1bfb AM |
9398 | { |
9399 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9400 | Undefined weak syms won't yet be marked as dynamic, |
9401 | nor will all TLS symbols. */ | |
411e1bfb | 9402 | if (h->dynindx == -1 |
b099ab9f | 9403 | && !h->forced_local |
25f23106 | 9404 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9405 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9406 | { |
c152c796 | 9407 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9408 | return FALSE; |
9409 | } | |
65f38f15 | 9410 | |
0c8d6e5c | 9411 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9412 | abort (); |
0ffa91dd | 9413 | |
927be08e | 9414 | allocate_got (h, info, gent); |
411e1bfb | 9415 | } |
65f38f15 | 9416 | |
b099ab9f | 9417 | if (eh->dyn_relocs == NULL |
25f23106 | 9418 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9419 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9420 | return TRUE; |
65f38f15 AM |
9421 | |
9422 | /* In the shared -Bsymbolic case, discard space allocated for | |
9423 | dynamic pc-relative relocs against symbols which turn out to be | |
9424 | defined in regular objects. For the normal shared case, discard | |
9425 | space for relocs that have become local due to symbol visibility | |
9426 | changes. */ | |
9427 | ||
9428 | if (info->shared) | |
9429 | { | |
9c7a29a3 | 9430 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9431 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9432 | generated via assembly. We want calls to protected symbols to |
9433 | resolve directly to the function rather than going via the plt. | |
9434 | If people want function pointer comparisons to work as expected | |
9435 | then they should avoid writing weird assembly. */ | |
09695f56 | 9436 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9437 | { |
6061a67d | 9438 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9439 | |
9440 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9441 | { |
65f38f15 AM |
9442 | p->count -= p->pc_count; |
9443 | p->pc_count = 0; | |
9444 | if (p->count == 0) | |
9445 | *pp = p->next; | |
9446 | else | |
9447 | pp = &p->next; | |
5bd4f169 | 9448 | } |
65f38f15 | 9449 | } |
4e795f50 AM |
9450 | |
9451 | /* Also discard relocs on undefined weak syms with non-default | |
9452 | visibility. */ | |
cab87ef9 AM |
9453 | if (eh->dyn_relocs != NULL |
9454 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9455 | { |
9456 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9457 | eh->dyn_relocs = NULL; | |
9458 | ||
9459 | /* Make sure this symbol is output as a dynamic symbol. | |
9460 | Undefined weak syms won't yet be marked as dynamic. */ | |
9461 | else if (h->dynindx == -1 | |
9462 | && !h->forced_local) | |
9463 | { | |
9464 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9465 | return FALSE; | |
9466 | } | |
9467 | } | |
65f38f15 | 9468 | } |
25f23106 AM |
9469 | else if (h->type == STT_GNU_IFUNC) |
9470 | { | |
9471 | if (!h->non_got_ref) | |
9472 | eh->dyn_relocs = NULL; | |
9473 | } | |
f4656909 | 9474 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9475 | { |
9476 | /* For the non-shared case, discard space for relocs against | |
9477 | symbols which turn out to need copy relocs or are not | |
9478 | dynamic. */ | |
9479 | ||
f5385ebf | 9480 | if (!h->non_got_ref |
f5385ebf | 9481 | && !h->def_regular) |
65f38f15 AM |
9482 | { |
9483 | /* Make sure this symbol is output as a dynamic symbol. | |
9484 | Undefined weak syms won't yet be marked as dynamic. */ | |
9485 | if (h->dynindx == -1 | |
f5385ebf | 9486 | && !h->forced_local) |
65f38f15 | 9487 | { |
c152c796 | 9488 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9489 | return FALSE; |
65f38f15 AM |
9490 | } |
9491 | ||
9492 | /* If that succeeded, we know we'll be keeping all the | |
9493 | relocs. */ | |
9494 | if (h->dynindx != -1) | |
9495 | goto keep; | |
9496 | } | |
9497 | ||
9498 | eh->dyn_relocs = NULL; | |
9499 | ||
ec338859 | 9500 | keep: ; |
65f38f15 AM |
9501 | } |
9502 | ||
9503 | /* Finally, allocate space. */ | |
9504 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9505 | { | |
9506 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9507 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9508 | sreloc = htab->elf.irelplt; |
eea6121a | 9509 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9510 | } |
9511 | ||
b34976b6 | 9512 | return TRUE; |
65f38f15 AM |
9513 | } |
9514 | ||
a345bc8d AM |
9515 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9516 | to set up space for global entry stubs. These are put in glink, | |
9517 | after the branch table. */ | |
65f38f15 | 9518 | |
b34976b6 | 9519 | static bfd_boolean |
a345bc8d | 9520 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9521 | { |
a345bc8d AM |
9522 | struct bfd_link_info *info; |
9523 | struct ppc_link_hash_table *htab; | |
9524 | struct plt_entry *pent; | |
9525 | asection *s; | |
65f38f15 | 9526 | |
a345bc8d AM |
9527 | if (h->root.type == bfd_link_hash_indirect) |
9528 | return TRUE; | |
65f38f15 | 9529 | |
a345bc8d AM |
9530 | if (!h->pointer_equality_needed) |
9531 | return TRUE; | |
65f38f15 | 9532 | |
a345bc8d AM |
9533 | if (h->def_regular) |
9534 | return TRUE; | |
65f38f15 | 9535 | |
a345bc8d AM |
9536 | info = inf; |
9537 | htab = ppc_hash_table (info); | |
9538 | if (htab == NULL) | |
9539 | return FALSE; | |
9540 | ||
9541 | s = htab->glink; | |
9542 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9543 | if (pent->plt.offset != (bfd_vma) -1 | |
9544 | && pent->addend == 0) | |
9545 | { | |
afe397ea AM |
9546 | /* For ELFv2, if this symbol is not defined in a regular file |
9547 | and we are not generating a shared library or pie, then we | |
9548 | need to define the symbol in the executable on a call stub. | |
9549 | This is to avoid text relocations. */ | |
a345bc8d | 9550 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9551 | h->root.u.def.section = s; |
9552 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9553 | s->size += 16; |
9554 | break; | |
9555 | } | |
9556 | return TRUE; | |
9557 | } | |
9558 | ||
9559 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9560 | read-only sections. */ | |
9561 | ||
9562 | static bfd_boolean | |
9563 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9564 | { | |
9565 | if (h->root.type == bfd_link_hash_indirect) | |
9566 | return TRUE; | |
9567 | ||
9568 | if (readonly_dynrelocs (h)) | |
9569 | { | |
9570 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9571 | ||
9572 | /* Not an error, just cut short the traversal. */ | |
9573 | return FALSE; | |
65f38f15 | 9574 | } |
b34976b6 | 9575 | return TRUE; |
65f38f15 AM |
9576 | } |
9577 | ||
9578 | /* Set the sizes of the dynamic sections. */ | |
9579 | ||
b34976b6 | 9580 | static bfd_boolean |
ee67d69a | 9581 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9582 | struct bfd_link_info *info) |
65f38f15 AM |
9583 | { |
9584 | struct ppc_link_hash_table *htab; | |
9585 | bfd *dynobj; | |
9586 | asection *s; | |
b34976b6 | 9587 | bfd_boolean relocs; |
65f38f15 | 9588 | bfd *ibfd; |
7865406b | 9589 | struct got_entry *first_tlsld; |
65f38f15 AM |
9590 | |
9591 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9592 | if (htab == NULL) |
9593 | return FALSE; | |
9594 | ||
65f38f15 AM |
9595 | dynobj = htab->elf.dynobj; |
9596 | if (dynobj == NULL) | |
9597 | abort (); | |
9598 | ||
9599 | if (htab->elf.dynamic_sections_created) | |
9600 | { | |
9601 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9602 | if (info->executable) |
65f38f15 | 9603 | { |
3d4d4302 | 9604 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9605 | if (s == NULL) |
9606 | abort (); | |
eea6121a | 9607 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9608 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9609 | } | |
9610 | } | |
9611 | ||
9612 | /* Set up .got offsets for local syms, and space for local dynamic | |
9613 | relocs. */ | |
9614 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9615 | { | |
411e1bfb AM |
9616 | struct got_entry **lgot_ents; |
9617 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9618 | struct plt_entry **local_plt; |
9619 | struct plt_entry **end_local_plt; | |
f961d9dd | 9620 | unsigned char *lgot_masks; |
65f38f15 AM |
9621 | bfd_size_type locsymcount; |
9622 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9623 | |
0c8d6e5c | 9624 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9625 | continue; |
9626 | ||
9627 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9628 | { | |
19e08130 | 9629 | struct ppc_dyn_relocs *p; |
65f38f15 | 9630 | |
6edfbbad | 9631 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9632 | { |
ec338859 AM |
9633 | if (!bfd_is_abs_section (p->sec) |
9634 | && bfd_is_abs_section (p->sec->output_section)) | |
9635 | { | |
9636 | /* Input section has been discarded, either because | |
9637 | it is a copy of a linkonce section or due to | |
9638 | linker script /DISCARD/, so we'll be discarding | |
9639 | the relocs too. */ | |
9640 | } | |
248866a8 | 9641 | else if (p->count != 0) |
ec338859 | 9642 | { |
19e08130 AM |
9643 | asection *srel = elf_section_data (p->sec)->sreloc; |
9644 | if (p->ifunc) | |
33e44f2e | 9645 | srel = htab->elf.irelplt; |
eea6121a | 9646 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9647 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9648 | info->flags |= DF_TEXTREL; | |
ec338859 | 9649 | } |
65f38f15 AM |
9650 | } |
9651 | } | |
9652 | ||
411e1bfb AM |
9653 | lgot_ents = elf_local_got_ents (ibfd); |
9654 | if (!lgot_ents) | |
65f38f15 AM |
9655 | continue; |
9656 | ||
0ffa91dd | 9657 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9658 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9659 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9660 | local_plt = (struct plt_entry **) end_lgot_ents; |
9661 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9662 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9663 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9664 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9665 | { |
0b8bcf0d | 9666 | struct got_entry **pent, *ent; |
411e1bfb | 9667 | |
0b8bcf0d AM |
9668 | pent = lgot_ents; |
9669 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9670 | if (ent->got.refcount > 0) |
9671 | { | |
e7b938ca | 9672 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9673 | { |
927be08e | 9674 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9675 | *pent = ent->next; |
411e1bfb AM |
9676 | } |
9677 | else | |
9678 | { | |
19e08130 AM |
9679 | unsigned int ent_size = 8; |
9680 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9681 | ||
eea6121a | 9682 | ent->got.offset = s->size; |
e7b938ca | 9683 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9684 | { |
19e08130 AM |
9685 | ent_size *= 2; |
9686 | rel_size *= 2; | |
9687 | } | |
9688 | s->size += ent_size; | |
9689 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9690 | { | |
33e44f2e | 9691 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9692 | htab->got_reli_size += rel_size; |
9693 | } | |
9694 | else if (info->shared) | |
9695 | { | |
9696 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9697 | srel->size += rel_size; | |
927be08e | 9698 | } |
0b8bcf0d | 9699 | pent = &ent->next; |
411e1bfb AM |
9700 | } |
9701 | } | |
9702 | else | |
0b8bcf0d | 9703 | *pent = ent->next; |
65f38f15 | 9704 | } |
e054468f AM |
9705 | |
9706 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9707 | for (; local_plt < end_local_plt; ++local_plt) | |
9708 | { | |
9709 | struct plt_entry *ent; | |
9710 | ||
9711 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9712 | if (ent->plt.refcount > 0) | |
9713 | { | |
33e44f2e | 9714 | s = htab->elf.iplt; |
e054468f | 9715 | ent->plt.offset = s->size; |
b9e5796b | 9716 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9717 | |
33e44f2e | 9718 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9719 | } |
9720 | else | |
9721 | ent->plt.offset = (bfd_vma) -1; | |
9722 | } | |
65f38f15 AM |
9723 | } |
9724 | ||
9725 | /* Allocate global sym .plt and .got entries, and space for global | |
9726 | sym dynamic relocs. */ | |
4ce794b7 | 9727 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9728 | /* Stash the end of glink branch table. */ |
9729 | if (htab->glink != NULL) | |
9730 | htab->glink->rawsize = htab->glink->size; | |
9731 | ||
9732 | if (!htab->opd_abi && !info->shared) | |
9733 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
65f38f15 | 9734 | |
7865406b | 9735 | first_tlsld = NULL; |
102890f0 AM |
9736 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9737 | { | |
7865406b AM |
9738 | struct got_entry *ent; |
9739 | ||
0c8d6e5c | 9740 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9741 | continue; |
9742 | ||
7865406b AM |
9743 | ent = ppc64_tlsld_got (ibfd); |
9744 | if (ent->got.refcount > 0) | |
102890f0 | 9745 | { |
7865406b | 9746 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9747 | { |
7865406b AM |
9748 | ent->is_indirect = TRUE; |
9749 | ent->got.ent = first_tlsld; | |
9750 | } | |
9751 | else | |
9752 | { | |
9753 | if (first_tlsld == NULL) | |
9754 | first_tlsld = ent; | |
9755 | s = ppc64_elf_tdata (ibfd)->got; | |
9756 | ent->got.offset = s->size; | |
9757 | ent->owner = ibfd; | |
9758 | s->size += 16; | |
9759 | if (info->shared) | |
9760 | { | |
9761 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9762 | srel->size += sizeof (Elf64_External_Rela); | |
9763 | } | |
102890f0 AM |
9764 | } |
9765 | } | |
9766 | else | |
7865406b | 9767 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9768 | } |
9769 | ||
65f38f15 AM |
9770 | /* We now have determined the sizes of the various dynamic sections. |
9771 | Allocate memory for them. */ | |
b34976b6 | 9772 | relocs = FALSE; |
65f38f15 AM |
9773 | for (s = dynobj->sections; s != NULL; s = s->next) |
9774 | { | |
9775 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9776 | continue; | |
9777 | ||
4ce794b7 | 9778 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9779 | /* These haven't been allocated yet; don't strip. */ |
9780 | continue; | |
33e44f2e AM |
9781 | else if (s == htab->elf.sgot |
9782 | || s == htab->elf.splt | |
9783 | || s == htab->elf.iplt | |
c456f082 AM |
9784 | || s == htab->glink |
9785 | || s == htab->dynbss) | |
65f38f15 AM |
9786 | { |
9787 | /* Strip this section if we don't need it; see the | |
9788 | comment below. */ | |
5bd4f169 | 9789 | } |
58d180e8 AM |
9790 | else if (s == htab->glink_eh_frame) |
9791 | { | |
9792 | if (!bfd_is_abs_section (s->output_section)) | |
9793 | /* Not sized yet. */ | |
9794 | continue; | |
9795 | } | |
70cc837d | 9796 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9797 | { |
c456f082 | 9798 | if (s->size != 0) |
5bd4f169 | 9799 | { |
33e44f2e | 9800 | if (s != htab->elf.srelplt) |
b34976b6 | 9801 | relocs = TRUE; |
5bd4f169 AM |
9802 | |
9803 | /* We use the reloc_count field as a counter if we need | |
9804 | to copy relocs into the output file. */ | |
9805 | s->reloc_count = 0; | |
9806 | } | |
9807 | } | |
65f38f15 | 9808 | else |
5bd4f169 AM |
9809 | { |
9810 | /* It's not one of our sections, so don't allocate space. */ | |
9811 | continue; | |
9812 | } | |
9813 | ||
eea6121a | 9814 | if (s->size == 0) |
5bd4f169 | 9815 | { |
c456f082 AM |
9816 | /* If we don't need this section, strip it from the |
9817 | output file. This is mostly to handle .rela.bss and | |
9818 | .rela.plt. We must create both sections in | |
9819 | create_dynamic_sections, because they must be created | |
9820 | before the linker maps input sections to output | |
9821 | sections. The linker does that before | |
9822 | adjust_dynamic_symbol is called, and it is that | |
9823 | function which decides whether anything needs to go | |
9824 | into these sections. */ | |
8423293d | 9825 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9826 | continue; |
9827 | } | |
9828 | ||
c456f082 | 9829 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9830 | continue; |
9831 | ||
65f38f15 AM |
9832 | /* Allocate memory for the section contents. We use bfd_zalloc |
9833 | here in case unused entries are not reclaimed before the | |
9834 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9835 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9836 | sections instead of garbage. | |
9837 | We also rely on the section contents being zero when writing | |
9838 | the GOT. */ | |
eea6121a | 9839 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9840 | if (s->contents == NULL) |
b34976b6 | 9841 | return FALSE; |
5bd4f169 AM |
9842 | } |
9843 | ||
e717da7e AM |
9844 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9845 | { | |
0c8d6e5c | 9846 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9847 | continue; |
9848 | ||
e717da7e | 9849 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9850 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9851 | { |
eea6121a | 9852 | if (s->size == 0) |
8423293d | 9853 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9854 | else |
9855 | { | |
eea6121a | 9856 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9857 | if (s->contents == NULL) |
9858 | return FALSE; | |
9859 | } | |
9860 | } | |
9861 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9862 | if (s != NULL) | |
9863 | { | |
eea6121a | 9864 | if (s->size == 0) |
8423293d | 9865 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9866 | else |
9867 | { | |
eea6121a | 9868 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9869 | if (s->contents == NULL) |
9870 | return FALSE; | |
9871 | relocs = TRUE; | |
9872 | s->reloc_count = 0; | |
9873 | } | |
9874 | } | |
9875 | } | |
9876 | ||
e86ce104 | 9877 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9878 | { |
e8910a83 AM |
9879 | bfd_boolean tls_opt; |
9880 | ||
5bd4f169 AM |
9881 | /* Add some entries to the .dynamic section. We fill in the |
9882 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9883 | must add the entries now so that we get the correct size for | |
9884 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9885 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9886 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9887 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9888 | |
36af4a4e | 9889 | if (info->executable) |
5bd4f169 | 9890 | { |
dc810e39 | 9891 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9892 | return FALSE; |
5bd4f169 AM |
9893 | } |
9894 | ||
33e44f2e | 9895 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9896 | { |
dc810e39 AM |
9897 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9898 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9899 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9900 | || !add_dynamic_entry (DT_JMPREL, 0) |
9901 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9902 | return FALSE; |
5bd4f169 AM |
9903 | } |
9904 | ||
ee67d69a | 9905 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9906 | { |
9907 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9908 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9909 | return FALSE; |
19397422 AM |
9910 | } |
9911 | ||
e7d1c40c | 9912 | tls_opt = (!htab->params->no_tls_get_addr_opt |
e8910a83 AM |
9913 | && htab->tls_get_addr_fd != NULL |
9914 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9915 | if (tls_opt || !htab->opd_abi) | |
9916 | { | |
9917 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9918 | return FALSE; | |
9919 | } | |
a7f2871e | 9920 | |
5bd4f169 AM |
9921 | if (relocs) |
9922 | { | |
dc810e39 AM |
9923 | if (!add_dynamic_entry (DT_RELA, 0) |
9924 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9925 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9926 | return FALSE; |
5bd4f169 | 9927 | |
65f38f15 AM |
9928 | /* If any dynamic relocs apply to a read-only section, |
9929 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9930 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9931 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9932 | |
65f38f15 | 9933 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9934 | { |
65f38f15 | 9935 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9936 | return FALSE; |
5bd4f169 | 9937 | } |
5bd4f169 | 9938 | } |
5bd4f169 | 9939 | } |
65f38f15 | 9940 | #undef add_dynamic_entry |
5bd4f169 | 9941 | |
b34976b6 | 9942 | return TRUE; |
5bd4f169 AM |
9943 | } |
9944 | ||
a345bc8d AM |
9945 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9946 | ||
9947 | static bfd_boolean | |
9948 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9949 | { | |
9950 | if (h->plt.plist != NULL | |
9951 | && !h->def_regular | |
9952 | && !h->pointer_equality_needed) | |
9953 | return FALSE; | |
9954 | ||
9955 | return _bfd_elf_hash_symbol (h); | |
9956 | } | |
9957 | ||
721956f4 | 9958 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9959 | |
4ce794b7 AM |
9960 | static inline enum ppc_stub_type |
9961 | ppc_type_of_stub (asection *input_sec, | |
9962 | const Elf_Internal_Rela *rel, | |
9963 | struct ppc_link_hash_entry **hash, | |
e054468f | 9964 | struct plt_entry **plt_ent, |
6911b7dc AM |
9965 | bfd_vma destination, |
9966 | unsigned long local_off) | |
5bd4f169 | 9967 | { |
721956f4 AM |
9968 | struct ppc_link_hash_entry *h = *hash; |
9969 | bfd_vma location; | |
9970 | bfd_vma branch_offset; | |
9971 | bfd_vma max_branch_offset; | |
4ce794b7 | 9972 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9973 | |
721956f4 AM |
9974 | if (h != NULL) |
9975 | { | |
e054468f | 9976 | struct plt_entry *ent; |
7fe2b9a6 | 9977 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9978 | if (h->oh != NULL |
9979 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9980 | { |
9981 | fdh = ppc_follow_link (h->oh); | |
9982 | *hash = fdh; | |
9983 | } | |
8387904d | 9984 | |
e054468f AM |
9985 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9986 | if (ent->addend == rel->r_addend | |
9987 | && ent->plt.offset != (bfd_vma) -1) | |
9988 | { | |
e054468f AM |
9989 | *plt_ent = ent; |
9990 | return ppc_stub_plt_call; | |
9991 | } | |
5bd4f169 | 9992 | |
7fe2b9a6 AM |
9993 | /* Here, we know we don't have a plt entry. If we don't have a |
9994 | either a defined function descriptor or a defined entry symbol | |
9995 | in a regular object file, then it is pointless trying to make | |
9996 | any other type of stub. */ | |
854b41e7 AM |
9997 | if (!is_static_defined (&fdh->elf) |
9998 | && !is_static_defined (&h->elf)) | |
721956f4 | 9999 | return ppc_stub_none; |
5d1634d7 | 10000 | } |
e054468f AM |
10001 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10002 | { | |
10003 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10004 | struct plt_entry **local_plt = (struct plt_entry **) | |
10005 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10006 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10007 | ||
10008 | if (local_plt[r_symndx] != NULL) | |
10009 | { | |
10010 | struct plt_entry *ent; | |
10011 | ||
10012 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10013 | if (ent->addend == rel->r_addend | |
10014 | && ent->plt.offset != (bfd_vma) -1) | |
10015 | { | |
10016 | *plt_ent = ent; | |
10017 | return ppc_stub_plt_call; | |
10018 | } | |
10019 | } | |
10020 | } | |
5d1634d7 | 10021 | |
721956f4 AM |
10022 | /* Determine where the call point is. */ |
10023 | location = (input_sec->output_offset | |
10024 | + input_sec->output_section->vma | |
10025 | + rel->r_offset); | |
5d1634d7 | 10026 | |
721956f4 AM |
10027 | branch_offset = destination - location; |
10028 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10029 | |
721956f4 AM |
10030 | /* Determine if a long branch stub is needed. */ |
10031 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10032 | if (r_type != R_PPC64_REL24) |
721956f4 | 10033 | max_branch_offset = 1 << 15; |
5d1634d7 | 10034 | |
6911b7dc | 10035 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10036 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10037 | is needed later. */ | |
10038 | return ppc_stub_long_branch; | |
5d1634d7 | 10039 | |
721956f4 | 10040 | return ppc_stub_none; |
5d1634d7 AM |
10041 | } |
10042 | ||
794e51c0 AM |
10043 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10044 | to update a plt entry in one thread and have another thread see a | |
10045 | stale zero toc entry. To avoid this we need some sort of acquire | |
10046 | barrier in the call stub. One solution is to make the load of the | |
10047 | toc word seem to appear to depend on the load of the function entry | |
10048 | word. Another solution is to test for r2 being zero, and branch to | |
10049 | the appropriate glink entry if so. | |
10050 | ||
10051 | . fake dep barrier compare | |
71a39c98 AM |
10052 | . ld 12,xxx(2) ld 12,xxx(2) |
10053 | . mtctr 12 mtctr 12 | |
10054 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10055 | . add 2,2,11 cmpldi 2,0 |
10056 | . ld 2,xxx+8(2) bnectr+ | |
10057 | . bctr b <glink_entry> | |
10058 | ||
10059 | The solution involving the compare turns out to be faster, so | |
10060 | that's what we use unless the branch won't reach. */ | |
10061 | ||
10062 | #define ALWAYS_USE_FAKE_DEP 0 | |
10063 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10064 | |
5d1634d7 AM |
10065 | #define PPC_LO(v) ((v) & 0xffff) |
10066 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10067 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10068 | ||
794e51c0 AM |
10069 | static inline unsigned int |
10070 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10071 | struct ppc_stub_hash_entry *stub_entry, | |
10072 | bfd_vma off) | |
10073 | { | |
b9e5796b AM |
10074 | unsigned size = 12; |
10075 | ||
10076 | if (ALWAYS_EMIT_R2SAVE | |
10077 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10078 | size += 4; | |
10079 | if (PPC_HA (off) != 0) | |
794e51c0 | 10080 | size += 4; |
b9e5796b AM |
10081 | if (htab->opd_abi) |
10082 | { | |
10083 | size += 4; | |
e7d1c40c | 10084 | if (htab->params->plt_static_chain) |
b9e5796b | 10085 | size += 4; |
e7d1c40c | 10086 | if (htab->params->plt_thread_safe) |
b9e5796b | 10087 | size += 8; |
e7d1c40c | 10088 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10089 | size += 4; |
10090 | } | |
794e51c0 AM |
10091 | if (stub_entry->h != NULL |
10092 | && (stub_entry->h == htab->tls_get_addr_fd | |
10093 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10094 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 AM |
10095 | size += 13 * 4; |
10096 | return size; | |
10097 | } | |
10098 | ||
10099 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10100 | then return the padding needed to do so. */ | |
10101 | static inline unsigned int | |
10102 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10103 | struct ppc_stub_hash_entry *stub_entry, | |
10104 | bfd_vma plt_off) | |
10105 | { | |
e7d1c40c | 10106 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 AM |
10107 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
10108 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
10109 | ||
10110 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
10111 | > (stub_size & -stub_align)) | |
10112 | return stub_align - (stub_off & (stub_align - 1)); | |
10113 | return 0; | |
10114 | } | |
10115 | ||
10116 | /* Build a .plt call stub. */ | |
10117 | ||
10118 | static inline bfd_byte * | |
10119 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10120 | struct ppc_stub_hash_entry *stub_entry, | |
10121 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10122 | { | |
e7d1c40c | 10123 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10124 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c AM |
10125 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
10126 | bfd_boolean plt_thread_safe = htab->params->plt_thread_safe; | |
794e51c0 AM |
10127 | bfd_boolean use_fake_dep = plt_thread_safe; |
10128 | bfd_vma cmp_branch_off = 0; | |
10129 | ||
10130 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10131 | && plt_load_toc |
794e51c0 AM |
10132 | && plt_thread_safe |
10133 | && !(stub_entry->h != NULL | |
10134 | && (stub_entry->h == htab->tls_get_addr_fd | |
10135 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10136 | && !htab->params->no_tls_get_addr_opt)) |
794e51c0 AM |
10137 | { |
10138 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10139 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10140 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10141 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10142 | bfd_vma to, from; | |
10143 | ||
68d62958 AM |
10144 | if (pltindex > 32768) |
10145 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10146 | to = (glinkoff |
10147 | + htab->glink->output_offset | |
10148 | + htab->glink->output_section->vma); | |
10149 | from = (p - stub_entry->stub_sec->contents | |
10150 | + 4 * (ALWAYS_EMIT_R2SAVE | |
10151 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10152 | + 4 * (PPC_HA (offset) != 0) | |
10153 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10154 | != PPC_HA (offset)) | |
10155 | + 4 * (plt_static_chain != 0) | |
10156 | + 20 | |
10157 | + stub_entry->stub_sec->output_offset | |
10158 | + stub_entry->stub_sec->output_section->vma); | |
10159 | cmp_branch_off = to - from; | |
10160 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10161 | } | |
10162 | ||
ac2df442 AM |
10163 | if (PPC_HA (offset) != 0) |
10164 | { | |
176a0d42 AM |
10165 | if (r != NULL) |
10166 | { | |
794e51c0 AM |
10167 | if (ALWAYS_EMIT_R2SAVE |
10168 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10169 | r[0].r_offset += 4; | |
176a0d42 | 10170 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10171 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10172 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10173 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10174 | if (plt_load_toc) |
176a0d42 | 10175 | { |
b9e5796b | 10176 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10177 | { |
b9e5796b AM |
10178 | r[2].r_offset = r[1].r_offset + 4; |
10179 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10180 | r[2].r_addend = r[0].r_addend; | |
10181 | } | |
10182 | else | |
10183 | { | |
10184 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10185 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10186 | r[2].r_addend = r[0].r_addend + 8; | |
10187 | if (plt_static_chain) | |
10188 | { | |
10189 | r[3].r_offset = r[2].r_offset + 4; | |
10190 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10191 | r[3].r_addend = r[0].r_addend + 16; | |
10192 | } | |
c7131b65 | 10193 | } |
176a0d42 AM |
10194 | } |
10195 | } | |
794e51c0 AM |
10196 | if (ALWAYS_EMIT_R2SAVE |
10197 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10198 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 AM |
10199 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; |
10200 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
b9e5796b AM |
10201 | if (plt_load_toc |
10202 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10203 | { |
71a39c98 | 10204 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10205 | offset = 0; |
10206 | } | |
71a39c98 | 10207 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10208 | if (plt_load_toc) |
794e51c0 | 10209 | { |
b9e5796b AM |
10210 | if (use_fake_dep) |
10211 | { | |
10212 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10213 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10214 | } | |
10215 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10216 | if (plt_static_chain) | |
10217 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10218 | } |
ac2df442 AM |
10219 | } |
10220 | else | |
10221 | { | |
176a0d42 AM |
10222 | if (r != NULL) |
10223 | { | |
794e51c0 AM |
10224 | if (ALWAYS_EMIT_R2SAVE |
10225 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10226 | r[0].r_offset += 4; | |
176a0d42 | 10227 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10228 | if (plt_load_toc) |
176a0d42 | 10229 | { |
b9e5796b | 10230 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10231 | { |
b9e5796b AM |
10232 | r[1].r_offset = r[0].r_offset + 4; |
10233 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10234 | r[1].r_addend = r[0].r_addend; | |
10235 | } | |
10236 | else | |
10237 | { | |
10238 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10239 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10240 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10241 | if (plt_static_chain) | |
10242 | { | |
10243 | r[2].r_offset = r[1].r_offset + 4; | |
10244 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10245 | r[2].r_addend = r[0].r_addend + 8; | |
10246 | } | |
c7131b65 | 10247 | } |
176a0d42 AM |
10248 | } |
10249 | } | |
794e51c0 AM |
10250 | if (ALWAYS_EMIT_R2SAVE |
10251 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10252 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10253 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10254 | if (plt_load_toc |
10255 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10256 | { |
10257 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10258 | offset = 0; | |
10259 | } | |
71a39c98 | 10260 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10261 | if (plt_load_toc) |
794e51c0 | 10262 | { |
b9e5796b AM |
10263 | if (use_fake_dep) |
10264 | { | |
10265 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10266 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10267 | } | |
10268 | if (plt_static_chain) | |
10269 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10270 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10271 | } |
ac2df442 | 10272 | } |
b9e5796b | 10273 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10274 | { |
10275 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10276 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10277 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10278 | } |
10279 | else | |
10280 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10281 | return p; |
10282 | } | |
10283 | ||
a7f2871e AM |
10284 | /* Build a special .plt call stub for __tls_get_addr. */ |
10285 | ||
10286 | #define LD_R11_0R3 0xe9630000 | |
10287 | #define LD_R12_0R3 0xe9830000 | |
10288 | #define MR_R0_R3 0x7c601b78 | |
10289 | #define CMPDI_R11_0 0x2c2b0000 | |
10290 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10291 | #define BEQLR 0x4d820020 | |
10292 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10293 | #define STD_R11_0R1 0xf9610000 |
10294 | #define BCTRL 0x4e800421 | |
10295 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10296 | #define MTLR_R11 0x7d6803a6 |
10297 | ||
10298 | static inline bfd_byte * | |
794e51c0 AM |
10299 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10300 | struct ppc_stub_hash_entry *stub_entry, | |
10301 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10302 | { |
e7d1c40c | 10303 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10304 | |
a7f2871e AM |
10305 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10306 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10307 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10308 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10309 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10310 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10311 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10312 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10313 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10314 | |
10315 | if (r != NULL) | |
10316 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10317 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10318 | bfd_put_32 (obfd, BCTRL, p - 4); |
10319 | ||
a078d95a AM |
10320 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
10321 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
a7f2871e AM |
10322 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10323 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10324 | ||
10325 | return p; | |
10326 | } | |
10327 | ||
176a0d42 AM |
10328 | static Elf_Internal_Rela * |
10329 | get_relocs (asection *sec, int count) | |
10330 | { | |
10331 | Elf_Internal_Rela *relocs; | |
10332 | struct bfd_elf_section_data *elfsec_data; | |
10333 | ||
10334 | elfsec_data = elf_section_data (sec); | |
10335 | relocs = elfsec_data->relocs; | |
10336 | if (relocs == NULL) | |
10337 | { | |
10338 | bfd_size_type relsize; | |
10339 | relsize = sec->reloc_count * sizeof (*relocs); | |
10340 | relocs = bfd_alloc (sec->owner, relsize); | |
10341 | if (relocs == NULL) | |
10342 | return NULL; | |
10343 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10344 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10345 | sizeof (Elf_Internal_Shdr)); | |
10346 | if (elfsec_data->rela.hdr == NULL) | |
10347 | return NULL; | |
10348 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10349 | * sizeof (Elf64_External_Rela)); | |
10350 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10351 | sec->reloc_count = 0; |
10352 | } | |
10353 | relocs += sec->reloc_count; | |
10354 | sec->reloc_count += count; | |
10355 | return relocs; | |
10356 | } | |
10357 | ||
aa374f67 | 10358 | static bfd_vma |
25f53a85 | 10359 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10360 | struct ppc_stub_hash_entry *stub_entry) |
10361 | { | |
25f53a85 | 10362 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
10363 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
10364 | ||
10365 | if (r2off == 0) | |
10366 | { | |
10367 | /* Support linking -R objects. Get the toc pointer from the | |
10368 | opd entry. */ | |
10369 | char buf[8]; | |
b9e5796b AM |
10370 | if (!htab->opd_abi) |
10371 | return r2off; | |
aa374f67 AM |
10372 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10373 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10374 | ||
10375 | if (strcmp (opd->name, ".opd") != 0 | |
10376 | || opd->reloc_count != 0) | |
10377 | { | |
bc30df16 | 10378 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10379 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
10380 | bfd_set_error (bfd_error_bad_value); |
10381 | return 0; | |
10382 | } | |
10383 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
10384 | return 0; | |
10385 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 10386 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
10387 | } |
10388 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
10389 | return r2off; | |
10390 | } | |
10391 | ||
b34976b6 | 10392 | static bfd_boolean |
4ce794b7 | 10393 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10394 | { |
721956f4 AM |
10395 | struct ppc_stub_hash_entry *stub_entry; |
10396 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10397 | struct bfd_link_info *info; |
10398 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10399 | bfd_byte *loc; |
10400 | bfd_byte *p; | |
ee75fd95 | 10401 | bfd_vma dest, off; |
721956f4 | 10402 | int size; |
176a0d42 | 10403 | Elf_Internal_Rela *r; |
e054468f | 10404 | asection *plt; |
5d1634d7 | 10405 | |
721956f4 AM |
10406 | /* Massage our args to the form they really have. */ |
10407 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10408 | info = in_arg; |
5d1634d7 | 10409 | |
5d1634d7 | 10410 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10411 | if (htab == NULL) |
10412 | return FALSE; | |
5d1634d7 | 10413 | |
721956f4 | 10414 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10415 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10416 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10417 | |
4ce794b7 | 10418 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10419 | switch (stub_entry->stub_type) |
5d1634d7 | 10420 | { |
721956f4 | 10421 | case ppc_stub_long_branch: |
ad8e1ba5 | 10422 | case ppc_stub_long_branch_r2off: |
721956f4 | 10423 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10424 | dest = (stub_entry->target_value |
10425 | + stub_entry->target_section->output_offset | |
10426 | + stub_entry->target_section->output_section->vma); | |
10427 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10428 | off = dest; | |
5d1634d7 | 10429 | |
721956f4 AM |
10430 | /* And this is where we are coming from. */ |
10431 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10432 | + stub_entry->stub_sec->output_offset |
10433 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10434 | |
ac2df442 AM |
10435 | size = 4; |
10436 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10437 | { |
25f53a85 | 10438 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10439 | |
aa374f67 AM |
10440 | if (r2off == 0) |
10441 | { | |
10442 | htab->stub_error = TRUE; | |
10443 | return FALSE; | |
10444 | } | |
e7d1c40c | 10445 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10446 | loc += 4; |
ac2df442 AM |
10447 | size = 12; |
10448 | if (PPC_HA (r2off) != 0) | |
10449 | { | |
10450 | size = 16; | |
e7d1c40c AM |
10451 | bfd_put_32 (htab->params->stub_bfd, |
10452 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 AM |
10453 | loc += 4; |
10454 | } | |
e7d1c40c | 10455 | bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10456 | loc += 4; |
ac2df442 | 10457 | off -= size - 4; |
ad8e1ba5 | 10458 | } |
e7d1c40c | 10459 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10460 | |
5c3dead3 AM |
10461 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10462 | { | |
bc30df16 AM |
10463 | info->callbacks->einfo |
10464 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10465 | stub_entry->root.string); | |
5c3dead3 AM |
10466 | htab->stub_error = TRUE; |
10467 | return FALSE; | |
10468 | } | |
ee75fd95 AM |
10469 | |
10470 | if (info->emitrelocations) | |
10471 | { | |
176a0d42 AM |
10472 | r = get_relocs (stub_entry->stub_sec, 1); |
10473 | if (r == NULL) | |
10474 | return FALSE; | |
ee75fd95 AM |
10475 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10476 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10477 | r->r_addend = dest; | |
10478 | if (stub_entry->h != NULL) | |
10479 | { | |
10480 | struct elf_link_hash_entry **hashes; | |
10481 | unsigned long symndx; | |
10482 | struct ppc_link_hash_entry *h; | |
10483 | ||
e7d1c40c | 10484 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10485 | if (hashes == NULL) |
10486 | { | |
10487 | bfd_size_type hsize; | |
10488 | ||
10489 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10490 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10491 | if (hashes == NULL) |
10492 | return FALSE; | |
e7d1c40c | 10493 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10494 | htab->stub_globals = 1; |
10495 | } | |
10496 | symndx = htab->stub_globals++; | |
10497 | h = stub_entry->h; | |
10498 | hashes[symndx] = &h->elf; | |
10499 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10500 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10501 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10502 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10503 | /* H is an opd symbol. The addend must be zero. */ | |
10504 | r->r_addend = 0; | |
10505 | else | |
10506 | { | |
10507 | off = (h->elf.root.u.def.value | |
10508 | + h->elf.root.u.def.section->output_offset | |
10509 | + h->elf.root.u.def.section->output_section->vma); | |
10510 | r->r_addend -= off; | |
10511 | } | |
10512 | } | |
10513 | } | |
721956f4 | 10514 | break; |
e86ce104 | 10515 | |
721956f4 | 10516 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10517 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10518 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10519 | stub_entry->root.string + 9, | |
b34976b6 | 10520 | FALSE, FALSE); |
721956f4 AM |
10521 | if (br_entry == NULL) |
10522 | { | |
8de848d8 | 10523 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10524 | stub_entry->root.string); |
b34976b6 AM |
10525 | htab->stub_error = TRUE; |
10526 | return FALSE; | |
721956f4 AM |
10527 | } |
10528 | ||
176a0d42 AM |
10529 | dest = (stub_entry->target_value |
10530 | + stub_entry->target_section->output_offset | |
10531 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10532 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10533 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10534 | |
176a0d42 | 10535 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10536 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10537 | |
f94498ff | 10538 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10539 | { |
f94498ff | 10540 | br_entry->iter = 0; |
84f5d08e | 10541 | |
f94498ff | 10542 | if (htab->relbrlt != NULL) |
84f5d08e | 10543 | { |
f94498ff AM |
10544 | /* Create a reloc for the branch lookup table entry. */ |
10545 | Elf_Internal_Rela rela; | |
10546 | bfd_byte *rl; | |
10547 | ||
10548 | rela.r_offset = (br_entry->offset | |
10549 | + htab->brlt->output_offset | |
10550 | + htab->brlt->output_section->vma); | |
10551 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10552 | rela.r_addend = dest; |
f94498ff AM |
10553 | |
10554 | rl = htab->relbrlt->contents; | |
10555 | rl += (htab->relbrlt->reloc_count++ | |
10556 | * sizeof (Elf64_External_Rela)); | |
10557 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10558 | } | |
10559 | else if (info->emitrelocations) | |
10560 | { | |
176a0d42 AM |
10561 | r = get_relocs (htab->brlt, 1); |
10562 | if (r == NULL) | |
10563 | return FALSE; | |
10564 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10565 | normal reloc processing. Symbols and offsets are not | |
10566 | translated from input file to output file form, so | |
10567 | set up the offset per the output file. */ | |
f94498ff AM |
10568 | r->r_offset = (br_entry->offset |
10569 | + htab->brlt->output_offset | |
10570 | + htab->brlt->output_section->vma); | |
10571 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10572 | r->r_addend = dest; |
84f5d08e | 10573 | } |
84f5d08e | 10574 | } |
721956f4 | 10575 | |
176a0d42 AM |
10576 | dest = (br_entry->offset |
10577 | + htab->brlt->output_offset | |
10578 | + htab->brlt->output_section->vma); | |
10579 | ||
10580 | off = (dest | |
4ce794b7 | 10581 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10582 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10583 | |
ad8e1ba5 | 10584 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10585 | { |
25f53a85 | 10586 | info->callbacks->einfo |
bc30df16 | 10587 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10588 | stub_entry->root.string); |
5d1634d7 | 10589 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10590 | htab->stub_error = TRUE; |
10591 | return FALSE; | |
5d1634d7 | 10592 | } |
41bd81ab | 10593 | |
176a0d42 AM |
10594 | if (info->emitrelocations) |
10595 | { | |
10596 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10597 | if (r == NULL) | |
10598 | return FALSE; | |
10599 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10600 | if (bfd_big_endian (info->output_bfd)) |
10601 | r[0].r_offset += 2; | |
00f412ee | 10602 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10603 | r[0].r_offset += 4; |
10604 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10605 | r[0].r_addend = dest; | |
10606 | if (PPC_HA (off) != 0) | |
10607 | { | |
10608 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10609 | r[1].r_offset = r[0].r_offset + 4; | |
10610 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10611 | r[1].r_addend = r[0].r_addend; | |
10612 | } | |
10613 | } | |
10614 | ||
00f412ee | 10615 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10616 | { |
176a0d42 | 10617 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10618 | { |
10619 | size = 16; | |
e7d1c40c AM |
10620 | bfd_put_32 (htab->params->stub_bfd, |
10621 | ADDIS_R11_R2 | PPC_HA (off), loc); | |
ac2df442 | 10622 | loc += 4; |
e7d1c40c AM |
10623 | bfd_put_32 (htab->params->stub_bfd, |
10624 | LD_R12_0R11 | PPC_LO (off), loc); | |
ac2df442 AM |
10625 | } |
10626 | else | |
10627 | { | |
10628 | size = 12; | |
e7d1c40c AM |
10629 | bfd_put_32 (htab->params->stub_bfd, |
10630 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10631 | } |
ad8e1ba5 AM |
10632 | } |
10633 | else | |
10634 | { | |
25f53a85 | 10635 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10636 | |
00f412ee | 10637 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10638 | { |
10639 | htab->stub_error = TRUE; | |
10640 | return FALSE; | |
10641 | } | |
ad8e1ba5 | 10642 | |
e7d1c40c | 10643 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10644 | loc += 4; |
00f412ee | 10645 | size = 16; |
176a0d42 | 10646 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10647 | { |
10648 | size += 4; | |
e7d1c40c AM |
10649 | bfd_put_32 (htab->params->stub_bfd, |
10650 | ADDIS_R11_R2 | PPC_HA (off), loc); | |
ac2df442 | 10651 | loc += 4; |
e7d1c40c AM |
10652 | bfd_put_32 (htab->params->stub_bfd, |
10653 | LD_R12_0R11 | PPC_LO (off), loc); | |
ac2df442 AM |
10654 | } |
10655 | else | |
e7d1c40c | 10656 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10657 | |
10658 | if (PPC_HA (r2off) != 0) | |
10659 | { | |
10660 | size += 4; | |
00f412ee | 10661 | loc += 4; |
e7d1c40c AM |
10662 | bfd_put_32 (htab->params->stub_bfd, |
10663 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10664 | } |
10665 | if (PPC_LO (r2off) != 0) | |
10666 | { | |
10667 | size += 4; | |
ac2df442 | 10668 | loc += 4; |
e7d1c40c AM |
10669 | bfd_put_32 (htab->params->stub_bfd, |
10670 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10671 | } |
ad8e1ba5 AM |
10672 | } |
10673 | loc += 4; | |
e7d1c40c | 10674 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10675 | loc += 4; |
e7d1c40c | 10676 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10677 | break; |
5d1634d7 | 10678 | |
721956f4 | 10679 | case ppc_stub_plt_call: |
794e51c0 | 10680 | case ppc_stub_plt_call_r2save: |
e054468f | 10681 | if (stub_entry->h != NULL |
b31867b6 AM |
10682 | && stub_entry->h->is_func_descriptor |
10683 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10684 | { |
b31867b6 AM |
10685 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10686 | ||
10687 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10688 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10689 | FIXME: We used to define the symbol on one of the call | |
10690 | stubs instead, which is why we test symbol section id | |
10691 | against htab->top_id in various places. Likely all | |
10692 | these checks could now disappear. */ | |
10693 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10694 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10695 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10696 | fh->was_undefined = 0; | |
c862ae31 AM |
10697 | } |
10698 | ||
721956f4 | 10699 | /* Now build the stub. */ |
e054468f | 10700 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10701 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10702 | abort (); |
10703 | ||
33e44f2e | 10704 | plt = htab->elf.splt; |
25f23106 AM |
10705 | if (!htab->elf.dynamic_sections_created |
10706 | || stub_entry->h == NULL | |
10707 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10708 | plt = htab->elf.iplt; |
e054468f AM |
10709 | |
10710 | dest += plt->output_offset + plt->output_section->vma; | |
10711 | ||
10712 | if (stub_entry->h == NULL | |
10713 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10714 | { | |
10715 | Elf_Internal_Rela rela; | |
10716 | bfd_byte *rl; | |
10717 | ||
10718 | rela.r_offset = dest; | |
ee67d69a AM |
10719 | if (htab->opd_abi) |
10720 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10721 | else | |
10722 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10723 | rela.r_addend = (stub_entry->target_value |
10724 | + stub_entry->target_section->output_offset | |
10725 | + stub_entry->target_section->output_section->vma); | |
10726 | ||
33e44f2e AM |
10727 | rl = (htab->elf.irelplt->contents |
10728 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10729 | * sizeof (Elf64_External_Rela))); |
10730 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10731 | stub_entry->plt_ent->plt.offset |= 1; |
10732 | } | |
176a0d42 AM |
10733 | |
10734 | off = (dest | |
e054468f | 10735 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10736 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10737 | |
ad8e1ba5 | 10738 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10739 | { |
25f53a85 | 10740 | info->callbacks->einfo |
bc30df16 | 10741 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10742 | stub_entry->h != NULL |
10743 | ? stub_entry->h->elf.root.root.string | |
10744 | : "<local sym>"); | |
721956f4 | 10745 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10746 | htab->stub_error = TRUE; |
10747 | return FALSE; | |
721956f4 AM |
10748 | } |
10749 | ||
e7d1c40c | 10750 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
10751 | { |
10752 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10753 | ||
10754 | stub_entry->stub_sec->size += pad; | |
10755 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10756 | loc += pad; | |
10757 | } | |
10758 | ||
176a0d42 AM |
10759 | r = NULL; |
10760 | if (info->emitrelocations) | |
10761 | { | |
10762 | r = get_relocs (stub_entry->stub_sec, | |
3ba720c7 AM |
10763 | ((PPC_HA (off) != 0) |
10764 | + (htab->opd_abi | |
e7d1c40c | 10765 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10766 | && PPC_HA (off + 16) == PPC_HA (off)) |
10767 | : 1))); | |
176a0d42 AM |
10768 | if (r == NULL) |
10769 | return FALSE; | |
10770 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10771 | if (bfd_big_endian (info->output_bfd)) |
10772 | r[0].r_offset += 2; | |
176a0d42 AM |
10773 | r[0].r_addend = dest; |
10774 | } | |
a7f2871e AM |
10775 | if (stub_entry->h != NULL |
10776 | && (stub_entry->h == htab->tls_get_addr_fd | |
10777 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10778 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 | 10779 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10780 | else |
794e51c0 | 10781 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10782 | size = p - loc; |
10783 | break; | |
10784 | ||
10785 | default: | |
10786 | BFD_FAIL (); | |
b34976b6 | 10787 | return FALSE; |
721956f4 AM |
10788 | } |
10789 | ||
eea6121a | 10790 | stub_entry->stub_sec->size += size; |
97b639ba | 10791 | |
e7d1c40c | 10792 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10793 | { |
10794 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10795 | size_t len1, len2; |
10796 | char *name; | |
10797 | const char *const stub_str[] = { "long_branch", | |
10798 | "long_branch_r2off", | |
10799 | "plt_branch", | |
10800 | "plt_branch_r2off", | |
794e51c0 | 10801 | "plt_call", |
ee75fd95 AM |
10802 | "plt_call" }; |
10803 | ||
10804 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10805 | len2 = strlen (stub_entry->root.string); | |
10806 | name = bfd_malloc (len1 + len2 + 2); | |
10807 | if (name == NULL) | |
10808 | return FALSE; | |
10809 | memcpy (name, stub_entry->root.string, 9); | |
10810 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10811 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10812 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10813 | if (h == NULL) |
10814 | return FALSE; | |
10815 | if (h->root.type == bfd_link_hash_new) | |
10816 | { | |
10817 | h->root.type = bfd_link_hash_defined; | |
10818 | h->root.u.def.section = stub_entry->stub_sec; | |
10819 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10820 | h->ref_regular = 1; |
10821 | h->def_regular = 1; | |
10822 | h->ref_regular_nonweak = 1; | |
10823 | h->forced_local = 1; | |
10824 | h->non_elf = 0; | |
97b639ba AM |
10825 | } |
10826 | } | |
10827 | ||
b34976b6 | 10828 | return TRUE; |
721956f4 AM |
10829 | } |
10830 | ||
10831 | /* As above, but don't actually build the stub. Just bump offset so | |
10832 | we know stub section sizes, and select plt_branch stubs where | |
10833 | long_branch stubs won't do. */ | |
10834 | ||
b34976b6 | 10835 | static bfd_boolean |
4ce794b7 | 10836 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10837 | { |
10838 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10839 | struct bfd_link_info *info; |
721956f4 AM |
10840 | struct ppc_link_hash_table *htab; |
10841 | bfd_vma off; | |
10842 | int size; | |
10843 | ||
10844 | /* Massage our args to the form they really have. */ | |
10845 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10846 | info = in_arg; |
10847 | ||
10848 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10849 | if (htab == NULL) |
10850 | return FALSE; | |
721956f4 | 10851 | |
794e51c0 AM |
10852 | if (stub_entry->stub_type == ppc_stub_plt_call |
10853 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10854 | { |
e054468f AM |
10855 | asection *plt; |
10856 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10857 | if (off >= (bfd_vma) -2) |
411e1bfb | 10858 | abort (); |
33e44f2e | 10859 | plt = htab->elf.splt; |
25f23106 AM |
10860 | if (!htab->elf.dynamic_sections_created |
10861 | || stub_entry->h == NULL | |
10862 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10863 | plt = htab->elf.iplt; |
e054468f AM |
10864 | off += (plt->output_offset |
10865 | + plt->output_section->vma | |
10866 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10867 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10868 | |
794e51c0 | 10869 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 10870 | if (htab->params->plt_stub_align) |
794e51c0 | 10871 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
10872 | if (info->emitrelocations) |
10873 | { | |
10874 | stub_entry->stub_sec->reloc_count | |
b9e5796b AM |
10875 | += ((PPC_HA (off) != 0) |
10876 | + (htab->opd_abi | |
e7d1c40c | 10877 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
10878 | && PPC_HA (off + 16) == PPC_HA (off)) |
10879 | : 1)); | |
176a0d42 AM |
10880 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10881 | } | |
721956f4 AM |
10882 | } |
10883 | else | |
10884 | { | |
ad8e1ba5 AM |
10885 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10886 | variants. */ | |
ac2df442 | 10887 | bfd_vma r2off = 0; |
6911b7dc | 10888 | bfd_vma local_off = 0; |
ac2df442 | 10889 | |
721956f4 AM |
10890 | off = (stub_entry->target_value |
10891 | + stub_entry->target_section->output_offset | |
10892 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10893 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10894 | + stub_entry->stub_sec->output_offset |
10895 | + stub_entry->stub_sec->output_section->vma); | |
10896 | ||
ad8e1ba5 AM |
10897 | /* Reset the stub type from the plt variant in case we now |
10898 | can reach with a shorter stub. */ | |
10899 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10900 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10901 | ||
10902 | size = 4; | |
10903 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10904 | { | |
25f53a85 | 10905 | r2off = get_r2off (info, stub_entry); |
b9e5796b | 10906 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10907 | { |
10908 | htab->stub_error = TRUE; | |
10909 | return FALSE; | |
10910 | } | |
ac2df442 AM |
10911 | size = 12; |
10912 | if (PPC_HA (r2off) != 0) | |
10913 | size = 16; | |
10914 | off -= size - 4; | |
ad8e1ba5 AM |
10915 | } |
10916 | ||
6911b7dc AM |
10917 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
10918 | ||
b9e5796b AM |
10919 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
10920 | Do the same for -R objects without function descriptors. */ | |
10921 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
10922 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
10923 | && r2off == 0)) | |
721956f4 AM |
10924 | { |
10925 | struct ppc_branch_hash_entry *br_entry; | |
10926 | ||
10927 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10928 | stub_entry->root.string + 9, | |
b34976b6 | 10929 | TRUE, FALSE); |
721956f4 AM |
10930 | if (br_entry == NULL) |
10931 | { | |
8de848d8 | 10932 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10933 | stub_entry->root.string); |
b34976b6 AM |
10934 | htab->stub_error = TRUE; |
10935 | return FALSE; | |
721956f4 AM |
10936 | } |
10937 | ||
10938 | if (br_entry->iter != htab->stub_iteration) | |
10939 | { | |
10940 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10941 | br_entry->offset = htab->brlt->size; |
10942 | htab->brlt->size += 8; | |
63bc6f6c | 10943 | |
ee75fd95 | 10944 | if (htab->relbrlt != NULL) |
eea6121a | 10945 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10946 | else if (info->emitrelocations) |
10947 | { | |
10948 | htab->brlt->reloc_count += 1; | |
10949 | htab->brlt->flags |= SEC_RELOC; | |
10950 | } | |
721956f4 | 10951 | } |
ad8e1ba5 AM |
10952 | |
10953 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10954 | off = (br_entry->offset |
10955 | + htab->brlt->output_offset | |
10956 | + htab->brlt->output_section->vma | |
10957 | - elf_gp (htab->brlt->output_section->owner) | |
10958 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10959 | ||
176a0d42 AM |
10960 | if (info->emitrelocations) |
10961 | { | |
10962 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10963 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10964 | } | |
10965 | ||
00f412ee | 10966 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
10967 | { |
10968 | size = 12; | |
176a0d42 | 10969 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10970 | size = 16; |
10971 | } | |
10972 | else | |
10973 | { | |
00f412ee | 10974 | size = 16; |
176a0d42 | 10975 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10976 | size += 4; |
10977 | ||
10978 | if (PPC_HA (r2off) != 0) | |
10979 | size += 4; | |
00f412ee AM |
10980 | if (PPC_LO (r2off) != 0) |
10981 | size += 4; | |
ac2df442 | 10982 | } |
721956f4 | 10983 | } |
84f5d08e AM |
10984 | else if (info->emitrelocations) |
10985 | { | |
10986 | stub_entry->stub_sec->reloc_count += 1; | |
10987 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10988 | } | |
721956f4 AM |
10989 | } |
10990 | ||
eea6121a | 10991 | stub_entry->stub_sec->size += size; |
b34976b6 | 10992 | return TRUE; |
721956f4 AM |
10993 | } |
10994 | ||
10995 | /* Set up various things so that we can make a list of input sections | |
10996 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10997 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10998 | |
10999 | int | |
e7d1c40c | 11000 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 AM |
11001 | { |
11002 | bfd *input_bfd; | |
734b6cf9 | 11003 | int top_id, top_index, id; |
721956f4 | 11004 | asection *section; |
734b6cf9 | 11005 | asection **input_list; |
721956f4 AM |
11006 | bfd_size_type amt; |
11007 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11008 | ||
4dfe6ac6 NC |
11009 | if (htab == NULL) |
11010 | return -1; | |
4c52953f | 11011 | |
1e2f5b6e | 11012 | /* Find the top input section id. */ |
3d6f9012 | 11013 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
11014 | input_bfd != NULL; |
11015 | input_bfd = input_bfd->link_next) | |
11016 | { | |
721956f4 AM |
11017 | for (section = input_bfd->sections; |
11018 | section != NULL; | |
11019 | section = section->next) | |
11020 | { | |
11021 | if (top_id < section->id) | |
11022 | top_id = section->id; | |
11023 | } | |
11024 | } | |
721956f4 | 11025 | |
8f3bab57 | 11026 | htab->top_id = top_id; |
721956f4 | 11027 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 11028 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
11029 | if (htab->stub_group == NULL) |
11030 | return -1; | |
11031 | ||
3d6f9012 AM |
11032 | /* Set toc_off for com, und, abs and ind sections. */ |
11033 | for (id = 0; id < 3; id++) | |
11034 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 11035 | |
734b6cf9 AM |
11036 | /* We can't use output_bfd->section_count here to find the top output |
11037 | section index as some sections may have been removed, and | |
8423293d | 11038 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 11039 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
11040 | section != NULL; |
11041 | section = section->next) | |
11042 | { | |
11043 | if (top_index < section->index) | |
11044 | top_index = section->index; | |
11045 | } | |
11046 | ||
11047 | htab->top_index = top_index; | |
11048 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 11049 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
11050 | htab->input_list = input_list; |
11051 | if (input_list == NULL) | |
11052 | return -1; | |
11053 | ||
721956f4 AM |
11054 | return 1; |
11055 | } | |
11056 | ||
927be08e AM |
11057 | /* Set up for first pass at multitoc partitioning. */ |
11058 | ||
11059 | void | |
11060 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11061 | { | |
11062 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11063 | ||
1c865ab2 | 11064 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11065 | htab->toc_bfd = NULL; |
11066 | htab->toc_first_sec = NULL; | |
11067 | } | |
11068 | ||
e717da7e AM |
11069 | /* The linker repeatedly calls this function for each TOC input section |
11070 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11071 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11072 | |
927be08e | 11073 | bfd_boolean |
4ce794b7 | 11074 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11075 | { |
11076 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11077 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11078 | |
4dfe6ac6 NC |
11079 | if (htab == NULL) |
11080 | return FALSE; | |
11081 | ||
927be08e | 11082 | if (!htab->second_toc_pass) |
4c52953f | 11083 | { |
927be08e | 11084 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11085 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11086 | ||
11087 | if (new_bfd) | |
bf102f86 AM |
11088 | { |
11089 | htab->toc_bfd = isec->owner; | |
11090 | htab->toc_first_sec = isec; | |
11091 | } | |
927be08e | 11092 | |
bf102f86 AM |
11093 | addr = isec->output_offset + isec->output_section->vma; |
11094 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11095 | limit = 0x80008000; |
11096 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11097 | limit = 0x10000; | |
11098 | if (off + isec->size > limit) | |
bf102f86 AM |
11099 | { |
11100 | addr = (htab->toc_first_sec->output_offset | |
11101 | + htab->toc_first_sec->output_section->vma); | |
11102 | htab->toc_curr = addr; | |
11103 | } | |
99877b66 | 11104 | |
927be08e AM |
11105 | /* toc_curr is the base address of this toc group. Set elf_gp |
11106 | for the input section to be the offset relative to the | |
11107 | output toc base plus 0x8000. Making the input elf_gp an | |
11108 | offset allows us to move the toc as a whole without | |
11109 | recalculating input elf_gp. */ | |
11110 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11111 | off += TOC_BASE_OFF; | |
11112 | ||
11113 | /* Die if someone uses a linker script that doesn't keep input | |
11114 | file .toc and .got together. */ | |
a4fd3de5 AM |
11115 | if (new_bfd |
11116 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11117 | && elf_gp (isec->owner) != off) |
11118 | return FALSE; | |
11119 | ||
11120 | elf_gp (isec->owner) = off; | |
11121 | return TRUE; | |
4c52953f | 11122 | } |
927be08e AM |
11123 | |
11124 | /* During the second pass toc_first_sec points to the start of | |
11125 | a toc group, and toc_curr is used to track the old elf_gp. | |
11126 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11127 | if (htab->toc_bfd == isec->owner) | |
11128 | return TRUE; | |
11129 | htab->toc_bfd = isec->owner; | |
11130 | ||
11131 | if (htab->toc_first_sec == NULL | |
11132 | || htab->toc_curr != elf_gp (isec->owner)) | |
11133 | { | |
11134 | htab->toc_curr = elf_gp (isec->owner); | |
11135 | htab->toc_first_sec = isec; | |
11136 | } | |
11137 | addr = (htab->toc_first_sec->output_offset | |
11138 | + htab->toc_first_sec->output_section->vma); | |
11139 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11140 | elf_gp (isec->owner) = off; | |
11141 | ||
11142 | return TRUE; | |
ad8e1ba5 AM |
11143 | } |
11144 | ||
927be08e AM |
11145 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11146 | symbol H. */ | |
11147 | ||
11148 | static bfd_boolean | |
11149 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11150 | { | |
11151 | if (h->root.type == bfd_link_hash_indirect) | |
11152 | return TRUE; | |
11153 | ||
927be08e AM |
11154 | merge_got_entries (&h->got.glist); |
11155 | ||
11156 | return TRUE; | |
11157 | } | |
11158 | ||
11159 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11160 | symbol H. */ | |
11161 | ||
11162 | static bfd_boolean | |
11163 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11164 | { | |
11165 | struct got_entry *gent; | |
11166 | ||
11167 | if (h->root.type == bfd_link_hash_indirect) | |
11168 | return TRUE; | |
11169 | ||
927be08e AM |
11170 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11171 | if (!gent->is_indirect) | |
11172 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11173 | return TRUE; | |
11174 | } | |
11175 | ||
11176 | /* Called on the first multitoc pass after the last call to | |
11177 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11178 | entries. */ | |
11179 | ||
11180 | bfd_boolean | |
11181 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11182 | { |
11183 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11184 | struct bfd *ibfd, *ibfd2; |
11185 | bfd_boolean done_something; | |
11186 | ||
11187 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11188 | |
7865406b AM |
11189 | if (!htab->do_multi_toc) |
11190 | return FALSE; | |
11191 | ||
d0fae19d | 11192 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11193 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11194 | ||
11195 | /* And tlsld_got. */ | |
11196 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11197 | { | |
11198 | struct got_entry *ent, *ent2; | |
11199 | ||
11200 | if (!is_ppc64_elf (ibfd)) | |
11201 | continue; | |
11202 | ||
11203 | ent = ppc64_tlsld_got (ibfd); | |
11204 | if (!ent->is_indirect | |
11205 | && ent->got.offset != (bfd_vma) -1) | |
11206 | { | |
11207 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
11208 | { | |
11209 | if (!is_ppc64_elf (ibfd2)) | |
11210 | continue; | |
11211 | ||
11212 | ent2 = ppc64_tlsld_got (ibfd2); | |
11213 | if (!ent2->is_indirect | |
11214 | && ent2->got.offset != (bfd_vma) -1 | |
11215 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11216 | { | |
11217 | ent2->is_indirect = TRUE; | |
11218 | ent2->got.ent = ent; | |
11219 | } | |
11220 | } | |
11221 | } | |
11222 | } | |
11223 | ||
11224 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11225 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11226 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11227 | htab->got_reli_size = 0; |
11228 | ||
11229 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11230 | { | |
11231 | asection *got, *relgot; | |
11232 | ||
11233 | if (!is_ppc64_elf (ibfd)) | |
11234 | continue; | |
11235 | ||
11236 | got = ppc64_elf_tdata (ibfd)->got; | |
11237 | if (got != NULL) | |
11238 | { | |
11239 | got->rawsize = got->size; | |
11240 | got->size = 0; | |
11241 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11242 | relgot->rawsize = relgot->size; | |
11243 | relgot->size = 0; | |
11244 | } | |
11245 | } | |
11246 | ||
11247 | /* Now reallocate the got, local syms first. We don't need to | |
11248 | allocate section contents again since we never increase size. */ | |
11249 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11250 | { | |
11251 | struct got_entry **lgot_ents; | |
11252 | struct got_entry **end_lgot_ents; | |
11253 | struct plt_entry **local_plt; | |
11254 | struct plt_entry **end_local_plt; | |
f961d9dd | 11255 | unsigned char *lgot_masks; |
927be08e AM |
11256 | bfd_size_type locsymcount; |
11257 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11258 | asection *s; |
927be08e AM |
11259 | |
11260 | if (!is_ppc64_elf (ibfd)) | |
11261 | continue; | |
11262 | ||
11263 | lgot_ents = elf_local_got_ents (ibfd); | |
11264 | if (!lgot_ents) | |
11265 | continue; | |
11266 | ||
11267 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11268 | locsymcount = symtab_hdr->sh_info; | |
11269 | end_lgot_ents = lgot_ents + locsymcount; | |
11270 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11271 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11272 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11273 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11274 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11275 | { | |
11276 | struct got_entry *ent; | |
11277 | ||
11278 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11279 | { |
19e08130 AM |
11280 | unsigned int ent_size = 8; |
11281 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11282 | ||
d0fae19d AM |
11283 | ent->got.offset = s->size; |
11284 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11285 | { |
19e08130 AM |
11286 | ent_size *= 2; |
11287 | rel_size *= 2; | |
11288 | } | |
11289 | s->size += ent_size; | |
11290 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11291 | { | |
33e44f2e | 11292 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11293 | htab->got_reli_size += rel_size; |
11294 | } | |
11295 | else if (info->shared) | |
11296 | { | |
11297 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11298 | srel->size += rel_size; | |
d0fae19d AM |
11299 | } |
11300 | } | |
927be08e AM |
11301 | } |
11302 | } | |
11303 | ||
11304 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11305 | ||
11306 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11307 | { | |
11308 | struct got_entry *ent; | |
11309 | ||
11310 | if (!is_ppc64_elf (ibfd)) | |
11311 | continue; | |
11312 | ||
11313 | ent = ppc64_tlsld_got (ibfd); | |
11314 | if (!ent->is_indirect | |
11315 | && ent->got.offset != (bfd_vma) -1) | |
11316 | { | |
11317 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11318 | ent->got.offset = s->size; | |
11319 | s->size += 16; | |
11320 | if (info->shared) | |
11321 | { | |
11322 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11323 | srel->size += sizeof (Elf64_External_Rela); | |
11324 | } | |
11325 | } | |
11326 | } | |
11327 | ||
33e44f2e | 11328 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e AM |
11329 | if (!done_something) |
11330 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11331 | { | |
11332 | asection *got; | |
11333 | ||
11334 | if (!is_ppc64_elf (ibfd)) | |
11335 | continue; | |
11336 | ||
11337 | got = ppc64_elf_tdata (ibfd)->got; | |
11338 | if (got != NULL) | |
11339 | { | |
11340 | done_something = got->rawsize != got->size; | |
11341 | if (done_something) | |
11342 | break; | |
11343 | } | |
11344 | } | |
11345 | ||
11346 | if (done_something) | |
e7d1c40c | 11347 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11348 | |
11349 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11350 | on input sections. */ | |
11351 | htab->toc_bfd = NULL; | |
11352 | htab->toc_first_sec = NULL; | |
11353 | htab->second_toc_pass = TRUE; | |
11354 | return done_something; | |
11355 | } | |
11356 | ||
11357 | /* Called after second pass of multitoc partitioning. */ | |
11358 | ||
11359 | void | |
11360 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11361 | { | |
11362 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11363 | ||
11364 | /* After the second pass, toc_curr tracks the TOC offset used | |
11365 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11366 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11367 | } |
11368 | ||
9b5ecbd0 AM |
11369 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11370 | calls, then there's no need to use toc adjusting stubs when branching | |
11371 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11372 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11373 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11374 | for a stub was detected. If called from the top level, a return of | |
11375 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11376 | |
11377 | static int | |
4ce794b7 | 11378 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11379 | { |
9b5ecbd0 | 11380 | int ret; |
70cc837d AM |
11381 | |
11382 | /* Mark this section as checked. */ | |
11383 | isec->call_check_done = 1; | |
9b5ecbd0 | 11384 | |
772119ce AM |
11385 | /* We know none of our code bearing sections will need toc stubs. */ |
11386 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11387 | return 0; | |
11388 | ||
eea6121a | 11389 | if (isec->size == 0) |
082c50f8 AM |
11390 | return 0; |
11391 | ||
4c52953f AM |
11392 | if (isec->output_section == NULL) |
11393 | return 0; | |
11394 | ||
4c52953f | 11395 | ret = 0; |
70cc837d | 11396 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11397 | { |
70cc837d AM |
11398 | Elf_Internal_Rela *relstart, *rel; |
11399 | Elf_Internal_Sym *local_syms; | |
11400 | struct ppc_link_hash_table *htab; | |
2917689a | 11401 | |
70cc837d AM |
11402 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11403 | info->keep_memory); | |
11404 | if (relstart == NULL) | |
11405 | return -1; | |
90aecf7a | 11406 | |
70cc837d AM |
11407 | /* Look for branches to outside of this section. */ |
11408 | local_syms = NULL; | |
11409 | htab = ppc_hash_table (info); | |
11410 | if (htab == NULL) | |
11411 | return -1; | |
4c52953f | 11412 | |
70cc837d | 11413 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11414 | { |
70cc837d AM |
11415 | enum elf_ppc64_reloc_type r_type; |
11416 | unsigned long r_symndx; | |
11417 | struct elf_link_hash_entry *h; | |
11418 | struct ppc_link_hash_entry *eh; | |
11419 | Elf_Internal_Sym *sym; | |
11420 | asection *sym_sec; | |
11421 | struct _opd_sec_data *opd; | |
11422 | bfd_vma sym_value; | |
11423 | bfd_vma dest; | |
11424 | ||
11425 | r_type = ELF64_R_TYPE (rel->r_info); | |
11426 | if (r_type != R_PPC64_REL24 | |
11427 | && r_type != R_PPC64_REL14 | |
11428 | && r_type != R_PPC64_REL14_BRTAKEN | |
11429 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11430 | continue; | |
4c52953f | 11431 | |
70cc837d AM |
11432 | r_symndx = ELF64_R_SYM (rel->r_info); |
11433 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11434 | isec->owner)) | |
4c52953f | 11435 | { |
70cc837d AM |
11436 | ret = -1; |
11437 | break; | |
11438 | } | |
4c52953f | 11439 | |
70cc837d AM |
11440 | /* Calls to dynamic lib functions go through a plt call stub |
11441 | that uses r2. */ | |
11442 | eh = (struct ppc_link_hash_entry *) h; | |
11443 | if (eh != NULL | |
11444 | && (eh->elf.plt.plist != NULL | |
11445 | || (eh->oh != NULL | |
11446 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11447 | { | |
11448 | ret = 1; | |
11449 | break; | |
4c52953f AM |
11450 | } |
11451 | ||
70cc837d AM |
11452 | if (sym_sec == NULL) |
11453 | /* Ignore other undefined symbols. */ | |
4c52953f | 11454 | continue; |
4c52953f | 11455 | |
70cc837d AM |
11456 | /* Assume branches to other sections not included in the |
11457 | link need stubs too, to cover -R and absolute syms. */ | |
11458 | if (sym_sec->output_section == NULL) | |
11459 | { | |
11460 | ret = 1; | |
11461 | break; | |
11462 | } | |
4c52953f | 11463 | |
70cc837d AM |
11464 | if (h == NULL) |
11465 | sym_value = sym->st_value; | |
11466 | else | |
11467 | { | |
11468 | if (h->root.type != bfd_link_hash_defined | |
11469 | && h->root.type != bfd_link_hash_defweak) | |
11470 | abort (); | |
11471 | sym_value = h->root.u.def.value; | |
11472 | } | |
11473 | sym_value += rel->r_addend; | |
4c52953f | 11474 | |
70cc837d AM |
11475 | /* If this branch reloc uses an opd sym, find the code section. */ |
11476 | opd = get_opd_info (sym_sec); | |
11477 | if (opd != NULL) | |
11478 | { | |
11479 | if (h == NULL && opd->adjust != NULL) | |
11480 | { | |
11481 | long adjust; | |
4c52953f | 11482 | |
70cc837d AM |
11483 | adjust = opd->adjust[sym->st_value / 8]; |
11484 | if (adjust == -1) | |
11485 | /* Assume deleted functions won't ever be called. */ | |
11486 | continue; | |
11487 | sym_value += adjust; | |
11488 | } | |
4c52953f | 11489 | |
aef36ac1 AM |
11490 | dest = opd_entry_value (sym_sec, sym_value, |
11491 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11492 | if (dest == (bfd_vma) -1) |
11493 | continue; | |
11494 | } | |
11495 | else | |
11496 | dest = (sym_value | |
11497 | + sym_sec->output_offset | |
11498 | + sym_sec->output_section->vma); | |
4c52953f | 11499 | |
70cc837d AM |
11500 | /* Ignore branch to self. */ |
11501 | if (sym_sec == isec) | |
11502 | continue; | |
4c52953f | 11503 | |
70cc837d AM |
11504 | /* If the called function uses the toc, we need a stub. */ |
11505 | if (sym_sec->has_toc_reloc | |
11506 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11507 | { |
70cc837d | 11508 | ret = 1; |
4c52953f AM |
11509 | break; |
11510 | } | |
70cc837d AM |
11511 | |
11512 | /* Assume any branch that needs a long branch stub might in fact | |
11513 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11514 | else if (dest - (isec->output_offset | |
11515 | + isec->output_section->vma | |
6911b7dc AM |
11516 | + rel->r_offset) + (1 << 25) |
11517 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11518 | ? h->other | |
11519 | : sym->st_other)) | |
4c52953f | 11520 | { |
70cc837d AM |
11521 | ret = 1; |
11522 | break; | |
11523 | } | |
11524 | ||
11525 | /* If calling back to a section in the process of being | |
11526 | tested, we can't say for sure that no toc adjusting stubs | |
11527 | are needed, so don't return zero. */ | |
11528 | else if (sym_sec->call_check_in_progress) | |
11529 | ret = 2; | |
11530 | ||
11531 | /* Branches to another section that itself doesn't have any TOC | |
11532 | references are OK. Recursively call ourselves to check. */ | |
11533 | else if (!sym_sec->call_check_done) | |
11534 | { | |
11535 | int recur; | |
11536 | ||
11537 | /* Mark current section as indeterminate, so that other | |
11538 | sections that call back to current won't be marked as | |
11539 | known. */ | |
11540 | isec->call_check_in_progress = 1; | |
11541 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11542 | isec->call_check_in_progress = 0; | |
11543 | ||
4c52953f AM |
11544 | if (recur != 0) |
11545 | { | |
70cc837d AM |
11546 | ret = recur; |
11547 | if (recur != 2) | |
11548 | break; | |
4c52953f AM |
11549 | } |
11550 | } | |
4c52953f | 11551 | } |
70cc837d AM |
11552 | |
11553 | if (local_syms != NULL | |
11554 | && (elf_symtab_hdr (isec->owner).contents | |
11555 | != (unsigned char *) local_syms)) | |
11556 | free (local_syms); | |
11557 | if (elf_section_data (isec)->relocs != relstart) | |
11558 | free (relstart); | |
9b5ecbd0 AM |
11559 | } |
11560 | ||
70cc837d AM |
11561 | if ((ret & 1) == 0 |
11562 | && isec->map_head.s != NULL | |
11563 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11564 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11565 | { | |
11566 | if (isec->map_head.s->has_toc_reloc | |
11567 | || isec->map_head.s->makes_toc_func_call) | |
11568 | ret = 1; | |
11569 | else if (!isec->map_head.s->call_check_done) | |
11570 | { | |
11571 | int recur; | |
11572 | isec->call_check_in_progress = 1; | |
11573 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11574 | isec->call_check_in_progress = 0; | |
11575 | if (recur != 0) | |
11576 | ret = recur; | |
11577 | } | |
11578 | } | |
11579 | ||
11580 | if (ret == 1) | |
11581 | isec->makes_toc_func_call = 1; | |
4c52953f | 11582 | |
9b5ecbd0 AM |
11583 | return ret; |
11584 | } | |
11585 | ||
721956f4 AM |
11586 | /* The linker repeatedly calls this function for each input section, |
11587 | in the order that input sections are linked into output sections. | |
11588 | Build lists of input sections to determine groupings between which | |
11589 | we may insert linker stubs. */ | |
11590 | ||
9b5ecbd0 | 11591 | bfd_boolean |
4ce794b7 | 11592 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11593 | { |
11594 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11595 | ||
4dfe6ac6 NC |
11596 | if (htab == NULL) |
11597 | return FALSE; | |
11598 | ||
734b6cf9 AM |
11599 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11600 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11601 | { |
734b6cf9 | 11602 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11603 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11604 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11605 | /* This happens to make the list in reverse order, |
11606 | which is what we want. */ | |
734b6cf9 AM |
11607 | PREV_SEC (isec) = *list; |
11608 | *list = isec; | |
721956f4 | 11609 | } |
ad8e1ba5 | 11610 | |
4c52953f | 11611 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11612 | { |
8b974ba3 AM |
11613 | /* Analyse sections that aren't already flagged as needing a |
11614 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11615 | .fixup contains branches, but only back to the function that | |
11616 | hit an exception. */ | |
11617 | if (!(isec->has_toc_reloc | |
11618 | || (isec->flags & SEC_CODE) == 0 | |
11619 | || strcmp (isec->name, ".fixup") == 0 | |
11620 | || isec->call_check_done)) | |
11621 | { | |
11622 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11623 | return FALSE; |
8b974ba3 AM |
11624 | } |
11625 | /* Make all sections use the TOC assigned for this object file. | |
11626 | This will be wrong for pasted sections; We fix that in | |
11627 | check_pasted_section(). */ | |
11628 | if (elf_gp (isec->owner) != 0) | |
11629 | htab->toc_curr = elf_gp (isec->owner); | |
11630 | } | |
11631 | ||
ad8e1ba5 | 11632 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11633 | return TRUE; |
721956f4 AM |
11634 | } |
11635 | ||
70cc837d AM |
11636 | /* Check that all .init and .fini sections use the same toc, if they |
11637 | have toc relocs. */ | |
11638 | ||
11639 | static bfd_boolean | |
11640 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11641 | { | |
11642 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11643 | ||
11644 | if (o != NULL) | |
11645 | { | |
11646 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11647 | bfd_vma toc_off = 0; | |
11648 | asection *i; | |
11649 | ||
11650 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11651 | if (i->has_toc_reloc) | |
11652 | { | |
11653 | if (toc_off == 0) | |
11654 | toc_off = htab->stub_group[i->id].toc_off; | |
11655 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11656 | return FALSE; | |
11657 | } | |
6683a28d AM |
11658 | |
11659 | if (toc_off == 0) | |
11660 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11661 | if (i->makes_toc_func_call) | |
11662 | { | |
11663 | toc_off = htab->stub_group[i->id].toc_off; | |
11664 | break; | |
11665 | } | |
11666 | ||
70cc837d AM |
11667 | /* Make sure the whole pasted function uses the same toc offset. */ |
11668 | if (toc_off != 0) | |
11669 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11670 | htab->stub_group[i->id].toc_off = toc_off; | |
11671 | } | |
11672 | return TRUE; | |
11673 | } | |
11674 | ||
11675 | bfd_boolean | |
11676 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11677 | { | |
11678 | return (check_pasted_section (info, ".init") | |
11679 | & check_pasted_section (info, ".fini")); | |
11680 | } | |
11681 | ||
721956f4 AM |
11682 | /* See whether we can group stub sections together. Grouping stub |
11683 | sections may result in fewer stubs. More importantly, we need to | |
11684 | put all .init* and .fini* stubs at the beginning of the .init or | |
11685 | .fini output sections respectively, because glibc splits the | |
11686 | _init and _fini functions into multiple parts. Putting a stub in | |
11687 | the middle of a function is not a good idea. */ | |
11688 | ||
11689 | static void | |
4ce794b7 AM |
11690 | group_sections (struct ppc_link_hash_table *htab, |
11691 | bfd_size_type stub_group_size, | |
11692 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11693 | { |
7c8fe5c4 AM |
11694 | asection **list; |
11695 | bfd_size_type stub14_group_size; | |
11696 | bfd_boolean suppress_size_errors; | |
11697 | ||
11698 | suppress_size_errors = FALSE; | |
11699 | stub14_group_size = stub_group_size; | |
11700 | if (stub_group_size == 1) | |
11701 | { | |
11702 | /* Default values. */ | |
11703 | if (stubs_always_before_branch) | |
11704 | { | |
11705 | stub_group_size = 0x1e00000; | |
11706 | stub14_group_size = 0x7800; | |
11707 | } | |
11708 | else | |
11709 | { | |
11710 | stub_group_size = 0x1c00000; | |
11711 | stub14_group_size = 0x7000; | |
11712 | } | |
11713 | suppress_size_errors = TRUE; | |
11714 | } | |
11715 | ||
11716 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11717 | do |
721956f4 | 11718 | { |
734b6cf9 AM |
11719 | asection *tail = *list; |
11720 | while (tail != NULL) | |
721956f4 | 11721 | { |
734b6cf9 AM |
11722 | asection *curr; |
11723 | asection *prev; | |
11724 | bfd_size_type total; | |
11725 | bfd_boolean big_sec; | |
11726 | bfd_vma curr_toc; | |
11727 | ||
11728 | curr = tail; | |
eea6121a | 11729 | total = tail->size; |
6bee8834 AM |
11730 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11731 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11732 | ? stub14_group_size : stub_group_size); |
11733 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11734 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11735 | tail->owner, tail); | |
734b6cf9 AM |
11736 | curr_toc = htab->stub_group[tail->id].toc_off; |
11737 | ||
11738 | while ((prev = PREV_SEC (curr)) != NULL | |
11739 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11740 | < (ppc64_elf_section_data (prev) != NULL |
11741 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11742 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11743 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11744 | curr = prev; |
11745 | ||
11746 | /* OK, the size from the start of CURR to the end is less | |
11747 | than stub_group_size and thus can be handled by one stub | |
11748 | section. (or the tail section is itself larger than | |
11749 | stub_group_size, in which case we may be toast.) We | |
11750 | should really be keeping track of the total size of stubs | |
11751 | added here, as stubs contribute to the final output | |
11752 | section size. That's a little tricky, and this way will | |
11753 | only break if stubs added make the total size more than | |
11754 | 2^25, ie. for the default stub_group_size, if stubs total | |
11755 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11756 | do | |
721956f4 AM |
11757 | { |
11758 | prev = PREV_SEC (tail); | |
734b6cf9 | 11759 | /* Set up this stub group. */ |
721956f4 AM |
11760 | htab->stub_group[tail->id].link_sec = curr; |
11761 | } | |
734b6cf9 AM |
11762 | while (tail != curr && (tail = prev) != NULL); |
11763 | ||
11764 | /* But wait, there's more! Input sections up to stub_group_size | |
11765 | bytes before the stub section can be handled by it too. | |
11766 | Don't do this if we have a really large section after the | |
11767 | stubs, as adding more stubs increases the chance that | |
11768 | branches may not reach into the stub section. */ | |
11769 | if (!stubs_always_before_branch && !big_sec) | |
11770 | { | |
11771 | total = 0; | |
11772 | while (prev != NULL | |
11773 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11774 | < (ppc64_elf_section_data (prev) != NULL |
11775 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11776 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11777 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11778 | { | |
11779 | tail = prev; | |
11780 | prev = PREV_SEC (tail); | |
11781 | htab->stub_group[tail->id].link_sec = curr; | |
11782 | } | |
11783 | } | |
11784 | tail = prev; | |
721956f4 AM |
11785 | } |
11786 | } | |
734b6cf9 AM |
11787 | while (list-- != htab->input_list); |
11788 | free (htab->input_list); | |
721956f4 AM |
11789 | #undef PREV_SEC |
11790 | } | |
11791 | ||
58d180e8 AM |
11792 | static const unsigned char glink_eh_frame_cie[] = |
11793 | { | |
11794 | 0, 0, 0, 16, /* length. */ | |
11795 | 0, 0, 0, 0, /* id. */ | |
11796 | 1, /* CIE version. */ | |
11797 | 'z', 'R', 0, /* Augmentation string. */ | |
11798 | 4, /* Code alignment. */ | |
11799 | 0x78, /* Data alignment. */ | |
11800 | 65, /* RA reg. */ | |
11801 | 1, /* Augmentation size. */ | |
11802 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11803 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11804 | }; | |
11805 | ||
d969d15f AM |
11806 | /* Stripping output sections is normally done before dynamic section |
11807 | symbols have been allocated. This function is called later, and | |
11808 | handles cases like htab->brlt which is mapped to its own output | |
11809 | section. */ | |
11810 | ||
11811 | static void | |
11812 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11813 | { | |
11814 | if (isec->size == 0 | |
11815 | && isec->output_section->size == 0 | |
53d8967a | 11816 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11817 | && !bfd_section_removed_from_list (info->output_bfd, |
11818 | isec->output_section) | |
11819 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11820 | { | |
11821 | isec->output_section->flags |= SEC_EXCLUDE; | |
11822 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11823 | info->output_bfd->section_count--; | |
11824 | } | |
11825 | } | |
11826 | ||
721956f4 AM |
11827 | /* Determine and set the size of the stub section for a final link. |
11828 | ||
11829 | The basic idea here is to examine all the relocations looking for | |
11830 | PC-relative calls to a target that is unreachable with a "bl" | |
11831 | instruction. */ | |
11832 | ||
b34976b6 | 11833 | bfd_boolean |
e7d1c40c | 11834 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11835 | { |
11836 | bfd_size_type stub_group_size; | |
b34976b6 | 11837 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11838 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11839 | ||
4dfe6ac6 NC |
11840 | if (htab == NULL) |
11841 | return FALSE; | |
11842 | ||
e7d1c40c AM |
11843 | if (htab->params->plt_thread_safe == -1 && !info->executable) |
11844 | htab->params->plt_thread_safe = 1; | |
b9e5796b | 11845 | if (!htab->opd_abi) |
e7d1c40c AM |
11846 | htab->params->plt_thread_safe = 0; |
11847 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11848 | { |
e2458743 | 11849 | static const char *const thread_starter[] = |
794e51c0 AM |
11850 | { |
11851 | "pthread_create", | |
11852 | /* libstdc++ */ | |
11853 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11854 | /* librt */ | |
11855 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11856 | "mq_notify", "create_timer", | |
11857 | /* libanl */ | |
11858 | "getaddrinfo_a", | |
11859 | /* libgomp */ | |
11860 | "GOMP_parallel_start", | |
11861 | "GOMP_parallel_loop_static_start", | |
11862 | "GOMP_parallel_loop_dynamic_start", | |
11863 | "GOMP_parallel_loop_guided_start", | |
11864 | "GOMP_parallel_loop_runtime_start", | |
68ffbac6 | 11865 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11866 | }; |
11867 | unsigned i; | |
11868 | ||
11869 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11870 | { | |
11871 | struct elf_link_hash_entry *h; | |
11872 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11873 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
11874 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
11875 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
11876 | break; |
11877 | } | |
11878 | } | |
e7d1c40c AM |
11879 | stubs_always_before_branch = htab->params->group_size < 0; |
11880 | if (htab->params->group_size < 0) | |
11881 | stub_group_size = -htab->params->group_size; | |
721956f4 | 11882 | else |
e7d1c40c | 11883 | stub_group_size = htab->params->group_size; |
721956f4 AM |
11884 | |
11885 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11886 | ||
721956f4 AM |
11887 | while (1) |
11888 | { | |
11889 | bfd *input_bfd; | |
11890 | unsigned int bfd_indx; | |
11891 | asection *stub_sec; | |
721956f4 AM |
11892 | |
11893 | htab->stub_iteration += 1; | |
721956f4 AM |
11894 | |
11895 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11896 | input_bfd != NULL; | |
11897 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11898 | { | |
11899 | Elf_Internal_Shdr *symtab_hdr; | |
11900 | asection *section; | |
6cdc0ccc | 11901 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11902 | |
0c8d6e5c | 11903 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11904 | continue; |
11905 | ||
721956f4 | 11906 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11907 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11908 | if (symtab_hdr->sh_info == 0) |
11909 | continue; | |
11910 | ||
721956f4 AM |
11911 | /* Walk over each section attached to the input bfd. */ |
11912 | for (section = input_bfd->sections; | |
11913 | section != NULL; | |
11914 | section = section->next) | |
11915 | { | |
721956f4 | 11916 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11917 | |
11918 | /* If there aren't any relocs, then there's nothing more | |
11919 | to do. */ | |
11920 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11921 | || (section->flags & SEC_ALLOC) == 0 |
11922 | || (section->flags & SEC_LOAD) == 0 | |
11923 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11924 | || section->reloc_count == 0) |
11925 | continue; | |
11926 | ||
11927 | /* If this section is a link-once section that will be | |
11928 | discarded, then don't create any stubs. */ | |
11929 | if (section->output_section == NULL | |
927be08e | 11930 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11931 | continue; |
11932 | ||
1e2f5b6e AM |
11933 | /* Get the relocs. */ |
11934 | internal_relocs | |
4ce794b7 | 11935 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11936 | info->keep_memory); |
721956f4 | 11937 | if (internal_relocs == NULL) |
1e2f5b6e | 11938 | goto error_ret_free_local; |
721956f4 AM |
11939 | |
11940 | /* Now examine each relocation. */ | |
11941 | irela = internal_relocs; | |
11942 | irelaend = irela + section->reloc_count; | |
11943 | for (; irela < irelaend; irela++) | |
11944 | { | |
4ce794b7 AM |
11945 | enum elf_ppc64_reloc_type r_type; |
11946 | unsigned int r_indx; | |
721956f4 AM |
11947 | enum ppc_stub_type stub_type; |
11948 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11949 | asection *sym_sec, *code_sec; |
e054468f | 11950 | bfd_vma sym_value, code_value; |
721956f4 | 11951 | bfd_vma destination; |
6911b7dc | 11952 | unsigned long local_off; |
8843416a | 11953 | bfd_boolean ok_dest; |
721956f4 | 11954 | struct ppc_link_hash_entry *hash; |
8387904d | 11955 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11956 | struct elf_link_hash_entry *h; |
11957 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11958 | char *stub_name; |
11959 | const asection *id_sec; | |
74f0fb50 | 11960 | struct _opd_sec_data *opd; |
e054468f | 11961 | struct plt_entry *plt_ent; |
721956f4 AM |
11962 | |
11963 | r_type = ELF64_R_TYPE (irela->r_info); | |
11964 | r_indx = ELF64_R_SYM (irela->r_info); | |
11965 | ||
4ce794b7 | 11966 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11967 | { |
11968 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11969 | goto error_ret_free_internal; |
721956f4 AM |
11970 | } |
11971 | ||
11972 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
11973 | if (r_type != R_PPC64_REL24 |
11974 | && r_type != R_PPC64_REL14 | |
11975 | && r_type != R_PPC64_REL14_BRTAKEN | |
11976 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11977 | continue; |
11978 | ||
11979 | /* Now determine the call target, its name, value, | |
11980 | section. */ | |
411e1bfb AM |
11981 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11982 | r_indx, input_bfd)) | |
11983 | goto error_ret_free_internal; | |
11984 | hash = (struct ppc_link_hash_entry *) h; | |
11985 | ||
8843416a | 11986 | ok_dest = FALSE; |
8387904d | 11987 | fdh = NULL; |
7fe2b9a6 | 11988 | sym_value = 0; |
411e1bfb | 11989 | if (hash == NULL) |
721956f4 | 11990 | { |
411e1bfb | 11991 | sym_value = sym->st_value; |
8843416a | 11992 | ok_dest = TRUE; |
721956f4 | 11993 | } |
7fe2b9a6 AM |
11994 | else if (hash->elf.root.type == bfd_link_hash_defined |
11995 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11996 | { | |
11997 | sym_value = hash->elf.root.u.def.value; | |
11998 | if (sym_sec->output_section != NULL) | |
11999 | ok_dest = TRUE; | |
12000 | } | |
12001 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12002 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12003 | { |
99877b66 | 12004 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12005 | use the func descriptor sym instead if it is |
12006 | defined. */ | |
ceb1f1ef | 12007 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12008 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12009 | { |
8387904d AM |
12010 | if (fdh->elf.root.type == bfd_link_hash_defined |
12011 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12012 | { | |
12013 | sym_sec = fdh->elf.root.u.def.section; | |
12014 | sym_value = fdh->elf.root.u.def.value; | |
12015 | if (sym_sec->output_section != NULL) | |
12016 | ok_dest = TRUE; | |
12017 | } | |
99877b66 AM |
12018 | else |
12019 | fdh = NULL; | |
8387904d | 12020 | } |
7fe2b9a6 AM |
12021 | } |
12022 | else | |
12023 | { | |
12024 | bfd_set_error (bfd_error_bad_value); | |
12025 | goto error_ret_free_internal; | |
721956f4 AM |
12026 | } |
12027 | ||
8843416a | 12028 | destination = 0; |
6911b7dc | 12029 | local_off = 0; |
8843416a AM |
12030 | if (ok_dest) |
12031 | { | |
12032 | sym_value += irela->r_addend; | |
12033 | destination = (sym_value | |
12034 | + sym_sec->output_offset | |
12035 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12036 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12037 | ? hash->elf.other | |
12038 | : sym->st_other); | |
8843416a AM |
12039 | } |
12040 | ||
8387904d | 12041 | code_sec = sym_sec; |
e054468f | 12042 | code_value = sym_value; |
74f0fb50 AM |
12043 | opd = get_opd_info (sym_sec); |
12044 | if (opd != NULL) | |
8387904d AM |
12045 | { |
12046 | bfd_vma dest; | |
12047 | ||
74f0fb50 | 12048 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12049 | { |
74f0fb50 | 12050 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
12051 | if (adjust == -1) |
12052 | continue; | |
e054468f | 12053 | code_value += adjust; |
8387904d AM |
12054 | sym_value += adjust; |
12055 | } | |
12056 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12057 | &code_sec, &code_value, FALSE); |
8387904d AM |
12058 | if (dest != (bfd_vma) -1) |
12059 | { | |
12060 | destination = dest; | |
12061 | if (fdh != NULL) | |
12062 | { | |
12063 | /* Fixup old ABI sym to point at code | |
12064 | entry. */ | |
99877b66 | 12065 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12066 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12067 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12068 | } |
12069 | } | |
12070 | } | |
12071 | ||
721956f4 | 12072 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12073 | plt_ent = NULL; |
721956f4 | 12074 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12075 | &plt_ent, destination, |
12076 | local_off); | |
ad8e1ba5 AM |
12077 | |
12078 | if (stub_type != ppc_stub_plt_call) | |
12079 | { | |
12080 | /* Check whether we need a TOC adjusting stub. | |
12081 | Since the linker pastes together pieces from | |
12082 | different object files when creating the | |
12083 | _init and _fini functions, it may be that a | |
12084 | call to what looks like a local sym is in | |
12085 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12086 | if (code_sec != NULL |
12087 | && code_sec->output_section != NULL | |
12088 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 12089 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
12090 | && (code_sec->has_toc_reloc |
12091 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12092 | stub_type = ppc_stub_long_branch_r2off; |
12093 | } | |
12094 | ||
721956f4 AM |
12095 | if (stub_type == ppc_stub_none) |
12096 | continue; | |
12097 | ||
411e1bfb AM |
12098 | /* __tls_get_addr calls might be eliminated. */ |
12099 | if (stub_type != ppc_stub_plt_call | |
12100 | && hash != NULL | |
8387904d AM |
12101 | && (hash == htab->tls_get_addr |
12102 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12103 | && section->has_tls_reloc |
12104 | && irela != internal_relocs) | |
12105 | { | |
12106 | /* Get tls info. */ | |
f961d9dd | 12107 | unsigned char *tls_mask; |
411e1bfb | 12108 | |
3a71aa26 | 12109 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12110 | irela - 1, input_bfd)) |
12111 | goto error_ret_free_internal; | |
e7b938ca | 12112 | if (*tls_mask != 0) |
411e1bfb AM |
12113 | continue; |
12114 | } | |
12115 | ||
3b421ab3 AM |
12116 | if (stub_type == ppc_stub_plt_call |
12117 | && irela + 1 < irelaend | |
12118 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12119 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12120 | { | |
12121 | if (!tocsave_find (htab, INSERT, | |
12122 | &local_syms, irela + 1, input_bfd)) | |
12123 | goto error_ret_free_internal; | |
12124 | } | |
12125 | else if (stub_type == ppc_stub_plt_call) | |
12126 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12127 | |
721956f4 AM |
12128 | /* Support for grouping stub sections. */ |
12129 | id_sec = htab->stub_group[section->id].link_sec; | |
12130 | ||
12131 | /* Get the name of this stub. */ | |
12132 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12133 | if (!stub_name) | |
12134 | goto error_ret_free_internal; | |
12135 | ||
12136 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12137 | stub_name, FALSE, FALSE); |
721956f4 AM |
12138 | if (stub_entry != NULL) |
12139 | { | |
12140 | /* The proper stub has already been created. */ | |
12141 | free (stub_name); | |
794e51c0 AM |
12142 | if (stub_type == ppc_stub_plt_call_r2save) |
12143 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12144 | continue; |
12145 | } | |
12146 | ||
25f53a85 | 12147 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12148 | if (stub_entry == NULL) |
12149 | { | |
12150 | free (stub_name); | |
6cdc0ccc AM |
12151 | error_ret_free_internal: |
12152 | if (elf_section_data (section)->relocs == NULL) | |
12153 | free (internal_relocs); | |
12154 | error_ret_free_local: | |
12155 | if (local_syms != NULL | |
12156 | && (symtab_hdr->contents | |
12157 | != (unsigned char *) local_syms)) | |
12158 | free (local_syms); | |
b34976b6 | 12159 | return FALSE; |
721956f4 AM |
12160 | } |
12161 | ||
ad8e1ba5 | 12162 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12163 | if (stub_type != ppc_stub_plt_call |
12164 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12165 | { |
12166 | stub_entry->target_value = code_value; | |
12167 | stub_entry->target_section = code_sec; | |
12168 | } | |
12169 | else | |
12170 | { | |
12171 | stub_entry->target_value = sym_value; | |
12172 | stub_entry->target_section = sym_sec; | |
12173 | } | |
721956f4 | 12174 | stub_entry->h = hash; |
e054468f | 12175 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12176 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12177 | |
12178 | if (stub_entry->h != NULL) | |
12179 | htab->stub_globals += 1; | |
721956f4 AM |
12180 | } |
12181 | ||
12182 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12183 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12184 | free (internal_relocs); |
721956f4 | 12185 | } |
6cdc0ccc AM |
12186 | |
12187 | if (local_syms != NULL | |
12188 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12189 | { | |
12190 | if (!info->keep_memory) | |
12191 | free (local_syms); | |
12192 | else | |
12193 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12194 | } | |
721956f4 AM |
12195 | } |
12196 | ||
5c3dead3 | 12197 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12198 | stub sections. */ |
e7d1c40c | 12199 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12200 | stub_sec != NULL; |
12201 | stub_sec = stub_sec->next) | |
e717da7e | 12202 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12203 | { |
5c3dead3 | 12204 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12205 | stub_sec->size = 0; |
12206 | stub_sec->reloc_count = 0; | |
84f5d08e | 12207 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12208 | } |
eea6121a AM |
12209 | |
12210 | htab->brlt->size = 0; | |
84f5d08e AM |
12211 | htab->brlt->reloc_count = 0; |
12212 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12213 | if (htab->relbrlt != NULL) |
eea6121a | 12214 | htab->relbrlt->size = 0; |
721956f4 | 12215 | |
63bc6f6c | 12216 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12217 | |
176a0d42 AM |
12218 | if (info->emitrelocations |
12219 | && htab->glink != NULL && htab->glink->size != 0) | |
12220 | { | |
12221 | htab->glink->reloc_count = 1; | |
12222 | htab->glink->flags |= SEC_RELOC; | |
12223 | } | |
12224 | ||
58d180e8 AM |
12225 | if (htab->glink_eh_frame != NULL |
12226 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12227 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12228 | { |
4bbe044a | 12229 | size_t size = 0, align; |
58d180e8 | 12230 | |
e7d1c40c | 12231 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12232 | stub_sec != NULL; |
12233 | stub_sec = stub_sec->next) | |
12234 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12235 | size += 20; | |
12236 | if (htab->glink != NULL && htab->glink->size != 0) | |
12237 | size += 24; | |
12238 | if (size != 0) | |
12239 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12240 | align = 1; |
12241 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12242 | align -= 1; | |
12243 | size = (size + align) & ~align; | |
58d180e8 AM |
12244 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12245 | htab->glink_eh_frame->size = size; | |
12246 | } | |
12247 | ||
e7d1c40c AM |
12248 | if (htab->params->plt_stub_align != 0) |
12249 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12250 | stub_sec != NULL; |
12251 | stub_sec = stub_sec->next) | |
12252 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12253 | stub_sec->size = ((stub_sec->size |
12254 | + (1 << htab->params->plt_stub_align) - 1) | |
12255 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12256 | |
e7d1c40c | 12257 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12258 | stub_sec != NULL; |
12259 | stub_sec = stub_sec->next) | |
12260 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12261 | && stub_sec->rawsize != stub_sec->size) | |
12262 | break; | |
12263 | ||
12264 | /* Exit from this loop when no stubs have been added, and no stubs | |
12265 | have changed size. */ | |
58d180e8 AM |
12266 | if (stub_sec == NULL |
12267 | && (htab->glink_eh_frame == NULL | |
12268 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12269 | break; |
12270 | ||
721956f4 | 12271 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12272 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12273 | } |
12274 | ||
d969d15f AM |
12275 | maybe_strip_output (info, htab->brlt); |
12276 | if (htab->glink_eh_frame != NULL) | |
12277 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12278 | |
b34976b6 | 12279 | return TRUE; |
721956f4 AM |
12280 | } |
12281 | ||
12282 | /* Called after we have determined section placement. If sections | |
805fc799 | 12283 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12284 | |
805fc799 | 12285 | bfd_vma |
1c865ab2 | 12286 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12287 | { |
805fc799 AM |
12288 | asection *s; |
12289 | bfd_vma TOCstart; | |
721956f4 | 12290 | |
805fc799 AM |
12291 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12292 | order. The TOC starts where the first of these sections starts. */ | |
12293 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12294 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12295 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12296 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12297 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12298 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12299 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12300 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12301 | { |
12302 | /* This may happen for | |
12303 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12304 | .toc directive | |
12305 | o bad linker script | |
12306 | o --gc-sections and empty TOC sections | |
12307 | ||
12308 | FIXME: Warn user? */ | |
12309 | ||
12310 | /* Look for a likely section. We probably won't even be | |
12311 | using TOCstart. */ | |
12312 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12313 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12314 | | SEC_EXCLUDE)) | |
805fc799 AM |
12315 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12316 | break; | |
721956f4 | 12317 | if (s == NULL) |
805fc799 | 12318 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12319 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12320 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12321 | break; | |
721956f4 | 12322 | if (s == NULL) |
805fc799 | 12323 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12324 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12325 | == SEC_ALLOC) | |
805fc799 | 12326 | break; |
721956f4 | 12327 | if (s == NULL) |
805fc799 | 12328 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12329 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12330 | break; |
12331 | } | |
721956f4 | 12332 | |
805fc799 AM |
12333 | TOCstart = 0; |
12334 | if (s != NULL) | |
12335 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12336 | |
1c865ab2 AM |
12337 | _bfd_set_gp_value (obfd, TOCstart); |
12338 | ||
12339 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
12340 | { | |
12341 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12342 | ||
12343 | if (htab != NULL | |
12344 | && htab->elf.hgot != NULL) | |
12345 | { | |
1c865ab2 AM |
12346 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; |
12347 | htab->elf.hgot->root.u.def.section = s; | |
12348 | } | |
12349 | } | |
805fc799 | 12350 | return TOCstart; |
721956f4 AM |
12351 | } |
12352 | ||
a345bc8d AM |
12353 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12354 | write out any global entry stubs. */ | |
12355 | ||
12356 | static bfd_boolean | |
12357 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12358 | { | |
12359 | struct bfd_link_info *info; | |
12360 | struct ppc_link_hash_table *htab; | |
12361 | struct plt_entry *pent; | |
12362 | asection *s; | |
12363 | ||
12364 | if (h->root.type == bfd_link_hash_indirect) | |
12365 | return TRUE; | |
12366 | ||
12367 | if (!h->pointer_equality_needed) | |
12368 | return TRUE; | |
12369 | ||
12370 | if (h->def_regular) | |
12371 | return TRUE; | |
12372 | ||
12373 | info = inf; | |
12374 | htab = ppc_hash_table (info); | |
12375 | if (htab == NULL) | |
12376 | return FALSE; | |
12377 | ||
12378 | s = htab->glink; | |
12379 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12380 | if (pent->plt.offset != (bfd_vma) -1 | |
12381 | && pent->addend == 0) | |
12382 | { | |
12383 | bfd_byte *p; | |
12384 | asection *plt; | |
12385 | bfd_vma off; | |
12386 | ||
a345bc8d | 12387 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12388 | plt = htab->elf.splt; |
a345bc8d AM |
12389 | if (!htab->elf.dynamic_sections_created |
12390 | || h->dynindx == -1) | |
33e44f2e | 12391 | plt = htab->elf.iplt; |
a345bc8d AM |
12392 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12393 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12394 | ||
12395 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12396 | { | |
12397 | info->callbacks->einfo | |
12398 | (_("%P: linkage table error against `%T'\n"), | |
12399 | h->root.root.string); | |
12400 | bfd_set_error (bfd_error_bad_value); | |
12401 | htab->stub_error = TRUE; | |
12402 | } | |
12403 | ||
12404 | if (PPC_HA (off) != 0) | |
12405 | { | |
12406 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12407 | p += 4; | |
12408 | } | |
12409 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12410 | p += 4; | |
12411 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12412 | p += 4; | |
12413 | bfd_put_32 (s->owner, BCTR, p); | |
12414 | break; | |
12415 | } | |
12416 | return TRUE; | |
12417 | } | |
12418 | ||
721956f4 AM |
12419 | /* Build all the stubs associated with the current output file. |
12420 | The stubs are kept in a hash table attached to the main linker | |
12421 | hash table. This function is called via gldelf64ppc_finish. */ | |
12422 | ||
b34976b6 | 12423 | bfd_boolean |
e7d1c40c | 12424 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12425 | char **stats) |
5d1634d7 AM |
12426 | { |
12427 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 12428 | asection *stub_sec; |
5d1634d7 | 12429 | bfd_byte *p; |
e717da7e | 12430 | int stub_sec_count = 0; |
5d1634d7 | 12431 | |
4dfe6ac6 NC |
12432 | if (htab == NULL) |
12433 | return FALSE; | |
12434 | ||
eea6121a | 12435 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12436 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12437 | stub_sec != NULL; |
12438 | stub_sec = stub_sec->next) | |
eea6121a AM |
12439 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12440 | && stub_sec->size != 0) | |
e717da7e | 12441 | { |
e7d1c40c | 12442 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12443 | if (stub_sec->contents == NULL) |
12444 | return FALSE; | |
12445 | /* We want to check that built size is the same as calculated | |
12446 | size. rawsize is a convenient location to use. */ | |
12447 | stub_sec->rawsize = stub_sec->size; | |
12448 | stub_sec->size = 0; | |
e717da7e | 12449 | } |
5d1634d7 | 12450 | |
23eb7e01 | 12451 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12452 | { |
9f951329 | 12453 | unsigned int indx; |
ad8e1ba5 | 12454 | bfd_vma plt0; |
9f951329 | 12455 | |
721956f4 | 12456 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12457 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12458 | { |
12459 | struct elf_link_hash_entry *h; | |
468392fb AM |
12460 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12461 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12462 | if (h == NULL) |
12463 | return FALSE; | |
12464 | if (h->root.type == bfd_link_hash_new) | |
12465 | { | |
12466 | h->root.type = bfd_link_hash_defined; | |
12467 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12468 | h->root.u.def.value = 8; |
f5385ebf AM |
12469 | h->ref_regular = 1; |
12470 | h->def_regular = 1; | |
12471 | h->ref_regular_nonweak = 1; | |
12472 | h->forced_local = 1; | |
12473 | h->non_elf = 0; | |
97b639ba AM |
12474 | } |
12475 | } | |
33e44f2e AM |
12476 | plt0 = (htab->elf.splt->output_section->vma |
12477 | + htab->elf.splt->output_offset | |
12478 | - 16); | |
176a0d42 AM |
12479 | if (info->emitrelocations) |
12480 | { | |
12481 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12482 | if (r == NULL) | |
12483 | return FALSE; | |
12484 | r->r_offset = (htab->glink->output_offset | |
12485 | + htab->glink->output_section->vma); | |
12486 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12487 | r->r_addend = plt0; | |
12488 | } | |
4ce794b7 | 12489 | p = htab->glink->contents; |
176a0d42 | 12490 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12491 | bfd_put_64 (htab->glink->owner, plt0, p); |
12492 | p += 8; | |
b9e5796b AM |
12493 | if (htab->opd_abi) |
12494 | { | |
12495 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12496 | p += 4; | |
12497 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12498 | p += 4; | |
12499 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12500 | p += 4; | |
12501 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12502 | p += 4; | |
12503 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12504 | p += 4; | |
12505 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12506 | p += 4; | |
12507 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12508 | p += 4; | |
12509 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12510 | p += 4; | |
12511 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12512 | p += 4; | |
12513 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12514 | p += 4; | |
12515 | } | |
12516 | else | |
12517 | { | |
12518 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12519 | p += 4; | |
12520 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12521 | p += 4; | |
12522 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12523 | p += 4; | |
12524 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12525 | p += 4; | |
12526 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12527 | p += 4; | |
12528 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12529 | p += 4; | |
12530 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12531 | p += 4; | |
12532 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12533 | p += 4; | |
12534 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12535 | p += 4; | |
12536 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12537 | p += 4; | |
12538 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12539 | p += 4; | |
12540 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12541 | p += 4; | |
12542 | } | |
4ce794b7 | 12543 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12544 | p += 4; |
ee4bf8d2 AM |
12545 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12546 | { | |
12547 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12548 | p += 4; | |
12549 | } | |
ad8e1ba5 | 12550 | |
9f951329 AM |
12551 | /* Build the .glink lazy link call stubs. */ |
12552 | indx = 0; | |
a345bc8d | 12553 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12554 | { |
b9e5796b | 12555 | if (htab->opd_abi) |
9f951329 | 12556 | { |
b9e5796b AM |
12557 | if (indx < 0x8000) |
12558 | { | |
12559 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12560 | p += 4; | |
12561 | } | |
12562 | else | |
12563 | { | |
12564 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12565 | p += 4; | |
12566 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12567 | p); | |
12568 | p += 4; | |
12569 | } | |
9f951329 | 12570 | } |
4ce794b7 | 12571 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12572 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12573 | indx++; |
9f951329 AM |
12574 | p += 4; |
12575 | } | |
a345bc8d AM |
12576 | |
12577 | /* Build .glink global entry stubs. */ | |
12578 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12579 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12580 | } |
5d1634d7 | 12581 | |
eea6121a | 12582 | if (htab->brlt->size != 0) |
721956f4 | 12583 | { |
4ce794b7 | 12584 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12585 | htab->brlt->size); |
4ce794b7 | 12586 | if (htab->brlt->contents == NULL) |
b34976b6 | 12587 | return FALSE; |
721956f4 | 12588 | } |
ee75fd95 | 12589 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12590 | { |
12591 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12592 | htab->relbrlt->size); |
63bc6f6c AM |
12593 | if (htab->relbrlt->contents == NULL) |
12594 | return FALSE; | |
12595 | } | |
5d1634d7 | 12596 | |
58d180e8 AM |
12597 | if (htab->glink_eh_frame != NULL |
12598 | && htab->glink_eh_frame->size != 0) | |
12599 | { | |
12600 | bfd_vma val; | |
4bbe044a AM |
12601 | bfd_byte *last_fde; |
12602 | size_t last_fde_len, size, align, pad; | |
58d180e8 AM |
12603 | |
12604 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12605 | if (p == NULL) | |
12606 | return FALSE; | |
12607 | htab->glink_eh_frame->contents = p; | |
4bbe044a | 12608 | last_fde = p; |
58d180e8 AM |
12609 | |
12610 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
12611 | ||
12612 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12613 | /* CIE length (rewrite in case little-endian). */ | |
4bbe044a AM |
12614 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
12615 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
58d180e8 AM |
12616 | p += sizeof (glink_eh_frame_cie); |
12617 | ||
e7d1c40c | 12618 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12619 | stub_sec != NULL; |
12620 | stub_sec = stub_sec->next) | |
12621 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12622 | { | |
4bbe044a AM |
12623 | last_fde = p; |
12624 | last_fde_len = 16; | |
58d180e8 AM |
12625 | /* FDE length. */ |
12626 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
12627 | p += 4; | |
12628 | /* CIE pointer. */ | |
12629 | val = p - htab->glink_eh_frame->contents; | |
12630 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12631 | p += 4; | |
12632 | /* Offset to stub section. */ | |
12633 | val = (stub_sec->output_section->vma | |
12634 | + stub_sec->output_offset); | |
12635 | val -= (htab->glink_eh_frame->output_section->vma | |
12636 | + htab->glink_eh_frame->output_offset); | |
12637 | val -= p - htab->glink_eh_frame->contents; | |
12638 | if (val + 0x80000000 > 0xffffffff) | |
12639 | { | |
12640 | info->callbacks->einfo | |
8de848d8 | 12641 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12642 | stub_sec->name); |
12643 | return FALSE; | |
12644 | } | |
12645 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12646 | p += 4; | |
12647 | /* stub section size. */ | |
12648 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
12649 | p += 4; | |
12650 | /* Augmentation. */ | |
12651 | p += 1; | |
12652 | /* Pad. */ | |
12653 | p += 3; | |
12654 | } | |
12655 | if (htab->glink != NULL && htab->glink->size != 0) | |
12656 | { | |
4bbe044a AM |
12657 | last_fde = p; |
12658 | last_fde_len = 20; | |
58d180e8 AM |
12659 | /* FDE length. */ |
12660 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12661 | p += 4; | |
12662 | /* CIE pointer. */ | |
12663 | val = p - htab->glink_eh_frame->contents; | |
12664 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12665 | p += 4; | |
12666 | /* Offset to .glink. */ | |
12667 | val = (htab->glink->output_section->vma | |
12668 | + htab->glink->output_offset | |
12669 | + 8); | |
12670 | val -= (htab->glink_eh_frame->output_section->vma | |
12671 | + htab->glink_eh_frame->output_offset); | |
12672 | val -= p - htab->glink_eh_frame->contents; | |
12673 | if (val + 0x80000000 > 0xffffffff) | |
12674 | { | |
12675 | info->callbacks->einfo | |
8de848d8 | 12676 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12677 | htab->glink->name); |
12678 | return FALSE; | |
12679 | } | |
12680 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12681 | p += 4; | |
12682 | /* .glink size. */ | |
a345bc8d | 12683 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); |
58d180e8 AM |
12684 | p += 4; |
12685 | /* Augmentation. */ | |
12686 | p += 1; | |
12687 | ||
12688 | *p++ = DW_CFA_advance_loc + 1; | |
12689 | *p++ = DW_CFA_register; | |
12690 | *p++ = 65; | |
12691 | *p++ = 12; | |
12692 | *p++ = DW_CFA_advance_loc + 4; | |
12693 | *p++ = DW_CFA_restore_extended; | |
12694 | *p++ = 65; | |
12695 | } | |
4bbe044a AM |
12696 | /* Subsume any padding into the last FDE if user .eh_frame |
12697 | sections are aligned more than glink_eh_frame. Otherwise any | |
12698 | zero padding will be seen as a terminator. */ | |
12699 | size = p - htab->glink_eh_frame->contents; | |
12700 | align = 1; | |
12701 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12702 | align -= 1; | |
12703 | pad = ((size + align) & ~align) - size; | |
12704 | htab->glink_eh_frame->size = size + pad; | |
12705 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
58d180e8 AM |
12706 | } |
12707 | ||
721956f4 AM |
12708 | /* Build the stubs as directed by the stub hash table. */ |
12709 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12710 | |
aa8a7074 AM |
12711 | if (htab->relbrlt != NULL) |
12712 | htab->relbrlt->reloc_count = 0; | |
12713 | ||
e7d1c40c AM |
12714 | if (htab->params->plt_stub_align != 0) |
12715 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12716 | stub_sec != NULL; |
12717 | stub_sec = stub_sec->next) | |
12718 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12719 | stub_sec->size = ((stub_sec->size |
12720 | + (1 << htab->params->plt_stub_align) - 1) | |
12721 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12722 | |
e7d1c40c | 12723 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12724 | stub_sec != NULL; |
12725 | stub_sec = stub_sec->next) | |
e717da7e AM |
12726 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12727 | { | |
12728 | stub_sec_count += 1; | |
eea6121a | 12729 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12730 | break; |
12731 | } | |
5d1634d7 | 12732 | |
721956f4 | 12733 | if (stub_sec != NULL |
58d180e8 AM |
12734 | || (htab->glink_eh_frame != NULL |
12735 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12736 | { |
b34976b6 | 12737 | htab->stub_error = TRUE; |
8de848d8 | 12738 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12739 | } |
721956f4 | 12740 | |
d2a300cf AM |
12741 | if (htab->stub_error) |
12742 | return FALSE; | |
12743 | ||
12744 | if (stats != NULL) | |
12745 | { | |
12746 | *stats = bfd_malloc (500); | |
12747 | if (*stats == NULL) | |
12748 | return FALSE; | |
12749 | ||
ee75fd95 | 12750 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12751 | " branch %lu\n" |
12752 | " toc adjust %lu\n" | |
12753 | " long branch %lu\n" | |
12754 | " long toc adj %lu\n" | |
794e51c0 AM |
12755 | " plt call %lu\n" |
12756 | " plt call toc %lu"), | |
e717da7e | 12757 | stub_sec_count, |
ee75fd95 | 12758 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12759 | htab->stub_count[ppc_stub_long_branch - 1], |
12760 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12761 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12762 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 AM |
12763 | htab->stub_count[ppc_stub_plt_call - 1], |
12764 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
d2a300cf AM |
12765 | } |
12766 | return TRUE; | |
5bd4f169 AM |
12767 | } |
12768 | ||
99877b66 AM |
12769 | /* This function undoes the changes made by add_symbol_adjust. */ |
12770 | ||
12771 | static bfd_boolean | |
12772 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12773 | { | |
12774 | struct ppc_link_hash_entry *eh; | |
12775 | ||
12776 | if (h->root.type == bfd_link_hash_indirect) | |
12777 | return TRUE; | |
12778 | ||
99877b66 AM |
12779 | eh = (struct ppc_link_hash_entry *) h; |
12780 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12781 | return TRUE; | |
12782 | ||
12783 | eh->elf.root.type = bfd_link_hash_undefined; | |
12784 | return TRUE; | |
12785 | } | |
12786 | ||
12787 | void | |
12788 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12789 | { | |
12790 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12791 | |
12792 | if (htab != NULL) | |
12793 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12794 | } |
12795 | ||
60124e18 AM |
12796 | /* What to do when ld finds relocations against symbols defined in |
12797 | discarded sections. */ | |
12798 | ||
12799 | static unsigned int | |
12800 | ppc64_elf_action_discarded (asection *sec) | |
12801 | { | |
12802 | if (strcmp (".opd", sec->name) == 0) | |
12803 | return 0; | |
12804 | ||
12805 | if (strcmp (".toc", sec->name) == 0) | |
12806 | return 0; | |
12807 | ||
bce50a28 JJ |
12808 | if (strcmp (".toc1", sec->name) == 0) |
12809 | return 0; | |
12810 | ||
60124e18 AM |
12811 | return _bfd_elf_default_action_discarded (sec); |
12812 | } | |
12813 | ||
5bd4f169 AM |
12814 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12815 | to handle the relocations for a section. | |
12816 | ||
12817 | The relocs are always passed as Rela structures; if the section | |
12818 | actually uses Rel structures, the r_addend field will always be | |
12819 | zero. | |
12820 | ||
12821 | This function is responsible for adjust the section contents as | |
12822 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12823 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12824 | necessary. |
12825 | ||
12826 | This function does not have to worry about setting the reloc | |
12827 | address or the reloc symbol index. | |
12828 | ||
12829 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12830 | ||
12831 | LOCAL_SECTIONS is an array giving the section in the input file | |
12832 | corresponding to the st_shndx field of each local symbol. | |
12833 | ||
12834 | The global hash table entry for the global symbols can be found | |
12835 | via elf_sym_hashes (input_bfd). | |
12836 | ||
1049f94e | 12837 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12838 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12839 | going to be the section symbol corresponding to the output | |
12840 | section, which means that the addend must be adjusted | |
12841 | accordingly. */ | |
12842 | ||
b34976b6 | 12843 | static bfd_boolean |
4ce794b7 AM |
12844 | ppc64_elf_relocate_section (bfd *output_bfd, |
12845 | struct bfd_link_info *info, | |
12846 | bfd *input_bfd, | |
12847 | asection *input_section, | |
12848 | bfd_byte *contents, | |
12849 | Elf_Internal_Rela *relocs, | |
12850 | Elf_Internal_Sym *local_syms, | |
12851 | asection **local_sections) | |
5bd4f169 | 12852 | { |
65f38f15 | 12853 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12854 | Elf_Internal_Shdr *symtab_hdr; |
12855 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12856 | Elf_Internal_Rela *rel; |
12857 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12858 | Elf_Internal_Rela outrel; |
12859 | bfd_byte *loc; | |
411e1bfb | 12860 | struct got_entry **local_got_ents; |
5bd4f169 | 12861 | bfd_vma TOCstart; |
b34976b6 AM |
12862 | bfd_boolean ret = TRUE; |
12863 | bfd_boolean is_opd; | |
794e51c0 AM |
12864 | /* Assume 'at' branch hints. */ |
12865 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12866 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12867 | |
65f38f15 | 12868 | /* Initialize howto table if needed. */ |
5bd4f169 | 12869 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12870 | ppc_howto_init (); |
12871 | ||
65f38f15 | 12872 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12873 | if (htab == NULL) |
12874 | return FALSE; | |
ee75fd95 AM |
12875 | |
12876 | /* Don't relocate stub sections. */ | |
e7d1c40c | 12877 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
12878 | return TRUE; |
12879 | ||
0c8d6e5c | 12880 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 12881 | |
411e1bfb | 12882 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 12883 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 12884 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 12885 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 12886 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 12887 | |
5bd4f169 AM |
12888 | rel = relocs; |
12889 | relend = relocs + input_section->reloc_count; | |
12890 | for (; rel < relend; rel++) | |
12891 | { | |
04c9666a | 12892 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 12893 | bfd_vma addend; |
5bd4f169 AM |
12894 | bfd_reloc_status_type r; |
12895 | Elf_Internal_Sym *sym; | |
12896 | asection *sec; | |
039b3fef AM |
12897 | struct elf_link_hash_entry *h_elf; |
12898 | struct ppc_link_hash_entry *h; | |
12899 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 12900 | const char *sym_name; |
0d4792f7 | 12901 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 12902 | bfd_vma toc_addend; |
f961d9dd AM |
12903 | unsigned char tls_mask, tls_gd, tls_type; |
12904 | unsigned char sym_type; | |
5bd4f169 | 12905 | bfd_vma relocation; |
b34976b6 AM |
12906 | bfd_boolean unresolved_reloc; |
12907 | bfd_boolean warned; | |
bc30df16 | 12908 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 12909 | unsigned int insn; |
e11840f9 | 12910 | unsigned int mask; |
721956f4 AM |
12911 | struct ppc_stub_hash_entry *stub_entry; |
12912 | bfd_vma max_br_offset; | |
12913 | bfd_vma from; | |
31c76678 | 12914 | const Elf_Internal_Rela orig_rel = *rel; |
5bd4f169 | 12915 | |
4ce794b7 | 12916 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 12917 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
12918 | |
12919 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
12920 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
12921 | proper TOC base to use. */ | |
12922 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
12923 | && rel != relocs | |
12924 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
12925 | && is_opd) | |
12926 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
12927 | ||
4ce794b7 AM |
12928 | sym = NULL; |
12929 | sec = NULL; | |
039b3fef | 12930 | h_elf = NULL; |
4ce794b7 | 12931 | sym_name = NULL; |
b34976b6 AM |
12932 | unresolved_reloc = FALSE; |
12933 | warned = FALSE; | |
65f38f15 | 12934 | |
0b13192e | 12935 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
12936 | { |
12937 | /* It's a local symbol. */ | |
74f0fb50 | 12938 | struct _opd_sec_data *opd; |
4025353c | 12939 | |
5bd4f169 AM |
12940 | sym = local_syms + r_symndx; |
12941 | sec = local_sections[r_symndx]; | |
26c61ae5 | 12942 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 12943 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 12944 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
12945 | opd = get_opd_info (sec); |
12946 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 12947 | { |
74f0fb50 | 12948 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
12949 | if (adjust == -1) |
12950 | relocation = 0; | |
12951 | else | |
4cc603a5 AM |
12952 | { |
12953 | /* If this is a relocation against the opd section sym | |
12954 | and we have edited .opd, adjust the reloc addend so | |
12955 | that ld -r and ld --emit-relocs output is correct. | |
12956 | If it is a reloc against some other .opd symbol, | |
12957 | then the symbol value will be adjusted later. */ | |
12958 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12959 | rel->r_addend += adjust; | |
12960 | else | |
12961 | relocation += adjust; | |
12962 | } | |
1e2f5b6e | 12963 | } |
5bd4f169 AM |
12964 | } |
12965 | else | |
12966 | { | |
62d887d4 L |
12967 | bfd_boolean ignored; |
12968 | ||
b2a8e766 AM |
12969 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
12970 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 12971 | h_elf, sec, relocation, |
62d887d4 | 12972 | unresolved_reloc, warned, ignored); |
039b3fef AM |
12973 | sym_name = h_elf->root.root.string; |
12974 | sym_type = h_elf->type; | |
b69fdb4e AM |
12975 | if (sec != NULL |
12976 | && sec->owner == output_bfd | |
12977 | && strcmp (sec->name, ".opd") == 0) | |
12978 | { | |
12979 | /* This is a symbol defined in a linker script. All | |
12980 | such are defined in output sections, even those | |
12981 | defined by simple assignment from a symbol defined in | |
12982 | an input section. Transfer the symbol to an | |
12983 | appropriate input .opd section, so that a branch to | |
12984 | this symbol will be mapped to the location specified | |
12985 | by the opd entry. */ | |
12986 | struct bfd_link_order *lo; | |
12987 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
12988 | if (lo->type == bfd_indirect_link_order) | |
12989 | { | |
12990 | asection *isec = lo->u.indirect.section; | |
12991 | if (h_elf->root.u.def.value >= isec->output_offset | |
12992 | && h_elf->root.u.def.value < (isec->output_offset | |
12993 | + isec->size)) | |
12994 | { | |
12995 | h_elf->root.u.def.value -= isec->output_offset; | |
12996 | h_elf->root.u.def.section = isec; | |
12997 | sec = isec; | |
12998 | break; | |
12999 | } | |
13000 | } | |
13001 | } | |
5bd4f169 | 13002 | } |
039b3fef | 13003 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13004 | |
dbaa2011 | 13005 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13006 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13007 | rel, 1, relend, |
13008 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13009 | contents); |
ab96bf03 AM |
13010 | |
13011 | if (info->relocatable) | |
13012 | continue; | |
13013 | ||
f40da81b AM |
13014 | if (h != NULL && &h->elf == htab->elf.hgot) |
13015 | { | |
13016 | relocation = (TOCstart | |
13017 | + htab->stub_group[input_section->id].toc_off); | |
13018 | sec = bfd_abs_section_ptr; | |
13019 | unresolved_reloc = FALSE; | |
13020 | } | |
13021 | ||
951fd09b AM |
13022 | /* TLS optimizations. Replace instruction sequences and relocs |
13023 | based on information we collected in tls_optimize. We edit | |
13024 | RELOCS so that --emit-relocs will output something sensible | |
13025 | for the final instruction stream. */ | |
13026 | tls_mask = 0; | |
13027 | tls_gd = 0; | |
0d4792f7 | 13028 | toc_symndx = 0; |
727fc41e AM |
13029 | if (h != NULL) |
13030 | tls_mask = h->tls_mask; | |
13031 | else if (local_got_ents != NULL) | |
411e1bfb | 13032 | { |
e054468f AM |
13033 | struct plt_entry **local_plt = (struct plt_entry **) |
13034 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13035 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13036 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13037 | tls_mask = lgot_masks[r_symndx]; |
13038 | } | |
13039 | if (tls_mask == 0 | |
13040 | && (r_type == R_PPC64_TLS | |
13041 | || r_type == R_PPC64_TLSGD | |
13042 | || r_type == R_PPC64_TLSLD)) | |
13043 | { | |
13044 | /* Check for toc tls entries. */ | |
f961d9dd | 13045 | unsigned char *toc_tls; |
0d4792f7 | 13046 | |
727fc41e AM |
13047 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13048 | &local_syms, rel, input_bfd)) | |
13049 | return FALSE; | |
0d4792f7 | 13050 | |
727fc41e AM |
13051 | if (toc_tls) |
13052 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13053 | } |
13054 | ||
13055 | /* Check that tls relocs are used with tls syms, and non-tls | |
13056 | relocs are used with non-tls syms. */ | |
cf35638d | 13057 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13058 | && r_type != R_PPC64_NONE |
13059 | && (h == NULL | |
039b3fef AM |
13060 | || h->elf.root.type == bfd_link_hash_defined |
13061 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13062 | && (IS_PPC64_TLS_RELOC (r_type) |
13063 | != (sym_type == STT_TLS | |
13064 | || (sym_type == STT_SECTION | |
13065 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13066 | { |
727fc41e AM |
13067 | if (tls_mask != 0 |
13068 | && (r_type == R_PPC64_TLS | |
13069 | || r_type == R_PPC64_TLSGD | |
13070 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13071 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13072 | ; | |
13073 | else | |
25f53a85 | 13074 | info->callbacks->einfo |
1d483afe | 13075 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13076 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13077 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13078 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13079 | ppc64_elf_howto_table[r_type]->name, |
13080 | sym_name); | |
411e1bfb AM |
13081 | } |
13082 | ||
13083 | /* Ensure reloc mapping code below stays sane. */ | |
13084 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13085 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13086 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13087 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13088 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13089 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13090 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13091 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13092 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13093 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13094 | abort (); | |
0d4792f7 | 13095 | |
411e1bfb AM |
13096 | switch (r_type) |
13097 | { | |
13098 | default: | |
411e1bfb AM |
13099 | break; |
13100 | ||
ba761f19 AM |
13101 | case R_PPC64_LO_DS_OPT: |
13102 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13103 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13104 | abort (); | |
13105 | insn += (14u << 26) - (58u << 26); | |
13106 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13107 | r_type = R_PPC64_TOC16_LO; | |
13108 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13109 | break; | |
13110 | ||
411e1bfb AM |
13111 | case R_PPC64_TOC16: |
13112 | case R_PPC64_TOC16_LO: | |
13113 | case R_PPC64_TOC16_DS: | |
13114 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13115 | { |
13116 | /* Check for toc tls entries. */ | |
f961d9dd | 13117 | unsigned char *toc_tls; |
951fd09b | 13118 | int retval; |
411e1bfb | 13119 | |
3a71aa26 AM |
13120 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13121 | &local_syms, rel, input_bfd); | |
951fd09b | 13122 | if (retval == 0) |
411e1bfb AM |
13123 | return FALSE; |
13124 | ||
13125 | if (toc_tls) | |
13126 | { | |
951fd09b | 13127 | tls_mask = *toc_tls; |
411e1bfb AM |
13128 | if (r_type == R_PPC64_TOC16_DS |
13129 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13130 | { |
13131 | if (tls_mask != 0 | |
13132 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13133 | goto toctprel; | |
13134 | } | |
411e1bfb | 13135 | else |
951fd09b AM |
13136 | { |
13137 | /* If we found a GD reloc pair, then we might be | |
13138 | doing a GD->IE transition. */ | |
13139 | if (retval == 2) | |
13140 | { | |
13141 | tls_gd = TLS_TPRELGD; | |
13142 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13143 | goto tls_ldgd_opt; |
951fd09b AM |
13144 | } |
13145 | else if (retval == 3) | |
13146 | { | |
13147 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13148 | goto tls_ldgd_opt; |
951fd09b AM |
13149 | } |
13150 | } | |
411e1bfb AM |
13151 | } |
13152 | } | |
13153 | break; | |
13154 | ||
9d6ded02 AM |
13155 | case R_PPC64_GOT_TPREL16_HI: |
13156 | case R_PPC64_GOT_TPREL16_HA: | |
13157 | if (tls_mask != 0 | |
13158 | && (tls_mask & TLS_TPREL) == 0) | |
13159 | { | |
13160 | rel->r_offset -= d_offset; | |
13161 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13162 | r_type = R_PPC64_NONE; | |
13163 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13164 | } | |
13165 | break; | |
13166 | ||
411e1bfb AM |
13167 | case R_PPC64_GOT_TPREL16_DS: |
13168 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13169 | if (tls_mask != 0 |
13170 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13171 | { |
81407a69 | 13172 | toctprel: |
4fe5ca5b | 13173 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13174 | insn &= 31 << 21; |
13175 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13176 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13177 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13178 | if (toc_symndx != 0) |
13179 | { | |
13180 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13181 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13182 | /* We changed the symbol. Start over in order to |
13183 | get h, sym, sec etc. right. */ | |
13184 | rel--; | |
13185 | continue; | |
13186 | } | |
13187 | else | |
13188 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13189 | } |
13190 | break; | |
13191 | ||
13192 | case R_PPC64_TLS: | |
951fd09b AM |
13193 | if (tls_mask != 0 |
13194 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13195 | { |
411e1bfb | 13196 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13197 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13198 | if (insn == 0) | |
411e1bfb | 13199 | abort (); |
411e1bfb | 13200 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13201 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13202 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13203 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13204 | r_type = R_PPC64_TPREL16_LO; |
13205 | if (toc_symndx != 0) | |
13206 | { | |
13207 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13208 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13209 | /* We changed the symbol. Start over in order to |
13210 | get h, sym, sec etc. right. */ | |
13211 | rel--; | |
13212 | continue; | |
13213 | } | |
13214 | else | |
13215 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13216 | } |
13217 | break; | |
13218 | ||
411e1bfb AM |
13219 | case R_PPC64_GOT_TLSGD16_HI: |
13220 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13221 | tls_gd = TLS_TPRELGD; |
13222 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13223 | goto tls_gdld_hi; | |
13224 | break; | |
13225 | ||
411e1bfb AM |
13226 | case R_PPC64_GOT_TLSLD16_HI: |
13227 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13228 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13229 | { |
951fd09b AM |
13230 | tls_gdld_hi: |
13231 | if ((tls_mask & tls_gd) != 0) | |
13232 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13233 | + R_PPC64_GOT_TPREL16_DS); | |
13234 | else | |
411e1bfb | 13235 | { |
4fe5ca5b | 13236 | rel->r_offset -= d_offset; |
727ac201 | 13237 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13238 | r_type = R_PPC64_NONE; |
411e1bfb | 13239 | } |
951fd09b | 13240 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13241 | } |
13242 | break; | |
13243 | ||
951fd09b AM |
13244 | case R_PPC64_GOT_TLSGD16: |
13245 | case R_PPC64_GOT_TLSGD16_LO: | |
13246 | tls_gd = TLS_TPRELGD; | |
13247 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13248 | goto tls_ldgd_opt; |
951fd09b | 13249 | break; |
411e1bfb | 13250 | |
951fd09b AM |
13251 | case R_PPC64_GOT_TLSLD16: |
13252 | case R_PPC64_GOT_TLSLD16_LO: | |
13253 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13254 | { | |
3a71aa26 | 13255 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13256 | bfd_vma offset; |
13257 | ||
13258 | tls_ldgd_opt: | |
727fc41e AM |
13259 | offset = (bfd_vma) -1; |
13260 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13261 | __tls_get_addr calls, we must trust that the call | |
13262 | stays with its arg setup insns, ie. that the next | |
13263 | reloc is the __tls_get_addr call associated with | |
13264 | the current reloc. Edit both insns. */ | |
13265 | if (input_section->has_tls_get_addr_call | |
13266 | && rel + 1 < relend | |
13267 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13268 | htab->tls_get_addr, | |
13269 | htab->tls_get_addr_fd)) | |
13270 | offset = rel[1].r_offset; | |
102890f0 | 13271 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13272 | { |
102890f0 | 13273 | /* IE */ |
3a71aa26 AM |
13274 | insn1 = bfd_get_32 (output_bfd, |
13275 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
13276 | insn1 &= (1 << 26) - (1 << 2); |
13277 | insn1 |= 58 << 26; /* ld */ | |
13278 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13279 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13280 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13281 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13282 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13283 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13284 | else |
102890f0 AM |
13285 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13286 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13287 | } | |
13288 | else | |
13289 | { | |
13290 | /* LE */ | |
13291 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
13292 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13293 | if (tls_gd == 0) | |
951fd09b | 13294 | { |
102890f0 | 13295 | /* Was an LD reloc. */ |
1d483afe AM |
13296 | if (toc_symndx) |
13297 | sec = local_sections[toc_symndx]; | |
13298 | for (r_symndx = 0; | |
13299 | r_symndx < symtab_hdr->sh_info; | |
13300 | r_symndx++) | |
13301 | if (local_sections[r_symndx] == sec) | |
13302 | break; | |
13303 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13304 | r_symndx = STN_UNDEF; |
102890f0 | 13305 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13306 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13307 | rel->r_addend -= (local_syms[r_symndx].st_value |
13308 | + sec->output_offset | |
13309 | + sec->output_section->vma); | |
951fd09b | 13310 | } |
102890f0 | 13311 | else if (toc_symndx != 0) |
3a71aa26 AM |
13312 | { |
13313 | r_symndx = toc_symndx; | |
13314 | rel->r_addend = toc_addend; | |
13315 | } | |
102890f0 AM |
13316 | r_type = R_PPC64_TPREL16_HA; |
13317 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13318 | if (offset != (bfd_vma) -1) |
13319 | { | |
13320 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13321 | R_PPC64_TPREL16_LO); | |
13322 | rel[1].r_offset = offset + d_offset; | |
13323 | rel[1].r_addend = rel->r_addend; | |
13324 | } | |
102890f0 | 13325 | } |
3a71aa26 AM |
13326 | bfd_put_32 (output_bfd, insn1, |
13327 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13328 | if (offset != (bfd_vma) -1) |
13329 | { | |
13330 | insn3 = bfd_get_32 (output_bfd, | |
13331 | contents + offset + 4); | |
13332 | if (insn3 == NOP | |
13333 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13334 | { | |
13335 | rel[1].r_offset += 4; | |
13336 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13337 | insn2 = NOP; | |
13338 | } | |
13339 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13340 | } | |
13341 | if ((tls_mask & tls_gd) == 0 | |
13342 | && (tls_gd == 0 || toc_symndx != 0)) | |
13343 | { | |
13344 | /* We changed the symbol. Start over in order | |
13345 | to get h, sym, sec etc. right. */ | |
13346 | rel--; | |
13347 | continue; | |
13348 | } | |
13349 | } | |
13350 | break; | |
13351 | ||
13352 | case R_PPC64_TLSGD: | |
13353 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13354 | { | |
13355 | unsigned int insn2, insn3; | |
13356 | bfd_vma offset = rel->r_offset; | |
13357 | ||
13358 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13359 | { | |
13360 | /* IE */ | |
13361 | r_type = R_PPC64_NONE; | |
13362 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13363 | } | |
13364 | else | |
13365 | { | |
13366 | /* LE */ | |
13367 | if (toc_symndx != 0) | |
13368 | { | |
13369 | r_symndx = toc_symndx; | |
13370 | rel->r_addend = toc_addend; | |
13371 | } | |
13372 | r_type = R_PPC64_TPREL16_LO; | |
13373 | rel->r_offset = offset + d_offset; | |
13374 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13375 | } | |
13376 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13377 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13378 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13379 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13380 | insn3 = bfd_get_32 (output_bfd, |
13381 | contents + offset + 4); | |
102890f0 AM |
13382 | if (insn3 == NOP |
13383 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13384 | { | |
727fc41e | 13385 | rel->r_offset += 4; |
3a71aa26 AM |
13386 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13387 | insn2 = NOP; | |
102890f0 | 13388 | } |
102890f0 | 13389 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13390 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13391 | { |
102890f0 AM |
13392 | rel--; |
13393 | continue; | |
411e1bfb | 13394 | } |
411e1bfb | 13395 | } |
411e1bfb AM |
13396 | break; |
13397 | ||
727fc41e AM |
13398 | case R_PPC64_TLSLD: |
13399 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13400 | { | |
13401 | unsigned int insn2, insn3; | |
13402 | bfd_vma offset = rel->r_offset; | |
13403 | ||
13404 | if (toc_symndx) | |
13405 | sec = local_sections[toc_symndx]; | |
13406 | for (r_symndx = 0; | |
13407 | r_symndx < symtab_hdr->sh_info; | |
13408 | r_symndx++) | |
13409 | if (local_sections[r_symndx] == sec) | |
13410 | break; | |
13411 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13412 | r_symndx = STN_UNDEF; |
727fc41e | 13413 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13414 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13415 | rel->r_addend -= (local_syms[r_symndx].st_value |
13416 | + sec->output_offset | |
13417 | + sec->output_section->vma); | |
13418 | ||
13419 | r_type = R_PPC64_TPREL16_LO; | |
13420 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13421 | rel->r_offset = offset + d_offset; | |
13422 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13423 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13424 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13425 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13426 | insn3 = bfd_get_32 (output_bfd, | |
13427 | contents + offset + 4); | |
13428 | if (insn3 == NOP | |
13429 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13430 | { | |
13431 | rel->r_offset += 4; | |
13432 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13433 | insn2 = NOP; | |
13434 | } | |
13435 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13436 | rel--; | |
13437 | continue; | |
13438 | } | |
13439 | break; | |
13440 | ||
411e1bfb | 13441 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13442 | if (rel + 1 < relend |
13443 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13444 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13445 | { |
951fd09b AM |
13446 | if ((tls_mask & TLS_GD) == 0) |
13447 | { | |
13448 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13449 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13450 | r_type = R_PPC64_TPREL64; | |
13451 | else | |
13452 | { | |
4ce794b7 | 13453 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13454 | r_type = R_PPC64_NONE; |
13455 | } | |
13456 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13457 | } | |
13458 | } | |
13459 | else | |
13460 | { | |
13461 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13462 | { |
4ce794b7 | 13463 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13464 | r_type = R_PPC64_NONE; |
951fd09b | 13465 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13466 | } |
411e1bfb AM |
13467 | } |
13468 | break; | |
13469 | ||
13470 | case R_PPC64_TPREL64: | |
951fd09b | 13471 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13472 | { |
13473 | r_type = R_PPC64_NONE; | |
13474 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13475 | } | |
13476 | break; | |
52a82034 AM |
13477 | |
13478 | case R_PPC64_REL16_HA: | |
13479 | /* If we are generating a non-PIC executable, edit | |
13480 | . 0: addis 2,12,.TOC.-0b@ha | |
13481 | . addi 2,2,.TOC.-0b@l | |
13482 | used by ELFv2 global entry points to set up r2, to | |
13483 | . lis 2,.TOC.@ha | |
13484 | . addi 2,2,.TOC.@l | |
13485 | if .TOC. is in range. */ | |
13486 | if (!info->shared | |
13487 | && h != NULL && &h->elf == htab->elf.hgot | |
13488 | && rel + 1 < relend | |
13489 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13490 | && rel[1].r_offset == rel->r_offset + 4 | |
13491 | && rel[1].r_addend == rel->r_addend + 4 | |
13492 | && relocation + 0x80008000 <= 0xffffffff) | |
13493 | { | |
13494 | unsigned int insn1, insn2; | |
13495 | bfd_vma offset = rel->r_offset - d_offset; | |
13496 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13497 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13498 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13499 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13500 | { | |
13501 | r_type = R_PPC64_ADDR16_HA; | |
13502 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13503 | rel->r_addend -= d_offset; | |
13504 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13505 | rel[1].r_addend -= d_offset + 4; | |
13506 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13507 | } | |
13508 | } | |
13509 | break; | |
411e1bfb AM |
13510 | } |
13511 | ||
13512 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13513 | insn = 0; |
b25116a9 AM |
13514 | max_br_offset = 1 << 25; |
13515 | addend = rel->r_addend; | |
bc30df16 | 13516 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13517 | switch (r_type) |
5bd4f169 AM |
13518 | { |
13519 | default: | |
65f38f15 | 13520 | break; |
5bd4f169 | 13521 | |
3b421ab3 AM |
13522 | case R_PPC64_TOCSAVE: |
13523 | if (relocation + addend == (rel->r_offset | |
13524 | + input_section->output_offset | |
13525 | + input_section->output_section->vma) | |
13526 | && tocsave_find (htab, NO_INSERT, | |
13527 | &local_syms, rel, input_bfd)) | |
13528 | { | |
13529 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13530 | if (insn == NOP | |
13531 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13532 | bfd_put_32 (input_bfd, |
13533 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13534 | contents + rel->r_offset); |
13535 | } | |
13536 | break; | |
13537 | ||
65f38f15 AM |
13538 | /* Branch taken prediction relocations. */ |
13539 | case R_PPC64_ADDR14_BRTAKEN: | |
13540 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13541 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13542 | /* Fall thru. */ | |
65f38f15 | 13543 | |
86c76c7b | 13544 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13545 | case R_PPC64_ADDR14_BRNTAKEN: |
13546 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13547 | insn |= bfd_get_32 (output_bfd, |
13548 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13549 | /* Fall thru. */ |
86c76c7b | 13550 | |
b25116a9 AM |
13551 | case R_PPC64_REL14: |
13552 | max_br_offset = 1 << 15; | |
13553 | /* Fall thru. */ | |
5bd4f169 | 13554 | |
65f38f15 | 13555 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13556 | /* Calls to functions with a different TOC, such as calls to |
13557 | shared objects, need to alter the TOC pointer. This is | |
13558 | done using a linkage stub. A REL24 branching to these | |
13559 | linkage stubs needs to be followed by a nop, as the nop | |
13560 | will be replaced with an instruction to restore the TOC | |
13561 | base pointer. */ | |
8387904d | 13562 | fdh = h; |
b31867b6 AM |
13563 | if (h != NULL |
13564 | && h->oh != NULL | |
13565 | && h->oh->is_func_descriptor) | |
13566 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13567 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13568 | htab); | |
6abec6bc | 13569 | if (stub_entry != NULL |
ad8e1ba5 | 13570 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13571 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13572 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13573 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13574 | { |
b25116a9 | 13575 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13576 | |
ba8ca3e7 AM |
13577 | /* All of these stubs will modify r2, so there must be a |
13578 | branch and link followed by a nop. The nop is | |
13579 | replaced by an insn to restore r2. */ | |
eea6121a | 13580 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13581 | { |
ba8ca3e7 AM |
13582 | unsigned long br; |
13583 | ||
13584 | br = bfd_get_32 (input_bfd, | |
13585 | contents + rel->r_offset); | |
13586 | if ((br & 1) != 0) | |
41bd81ab | 13587 | { |
ba8ca3e7 AM |
13588 | unsigned long nop; |
13589 | ||
13590 | nop = bfd_get_32 (input_bfd, | |
13591 | contents + rel->r_offset + 4); | |
13592 | if (nop == NOP | |
13593 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13594 | { |
ba8ca3e7 AM |
13595 | if (h != NULL |
13596 | && (h == htab->tls_get_addr_fd | |
13597 | || h == htab->tls_get_addr) | |
e7d1c40c | 13598 | && !htab->params->no_tls_get_addr_opt) |
ba8ca3e7 AM |
13599 | { |
13600 | /* Special stub used, leave nop alone. */ | |
13601 | } | |
13602 | else | |
a078d95a AM |
13603 | bfd_put_32 (input_bfd, |
13604 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13605 | contents + rel->r_offset + 4); |
13606 | can_plt_call = TRUE; | |
a7f2871e | 13607 | } |
41bd81ab | 13608 | } |
5bd4f169 | 13609 | } |
721956f4 | 13610 | |
ba8ca3e7 | 13611 | if (!can_plt_call && h != NULL) |
721956f4 | 13612 | { |
ba8ca3e7 AM |
13613 | const char *name = h->elf.root.root.string; |
13614 | ||
13615 | if (*name == '.') | |
13616 | ++name; | |
13617 | ||
13618 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13619 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13620 | { |
ba8ca3e7 AM |
13621 | /* Allow crt1 branch to go via a toc adjusting |
13622 | stub. Other calls that never return could do | |
13623 | the same, if we could detect such. */ | |
b25116a9 | 13624 | can_plt_call = TRUE; |
6ab189d5 | 13625 | } |
ba8ca3e7 AM |
13626 | } |
13627 | ||
13628 | if (!can_plt_call) | |
13629 | { | |
13630 | /* g++ as of 20130507 emits self-calls without a | |
13631 | following nop. This is arguably wrong since we | |
13632 | have conflicting information. On the one hand a | |
13633 | global symbol and on the other a local call | |
13634 | sequence, but don't error for this special case. | |
13635 | It isn't possible to cheaply verify we have | |
13636 | exactly such a call. Allow all calls to the same | |
13637 | section. */ | |
13638 | asection *code_sec = sec; | |
13639 | ||
13640 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13641 | { |
ba8ca3e7 AM |
13642 | bfd_vma off = (relocation + addend |
13643 | - sec->output_section->vma | |
13644 | - sec->output_offset); | |
bc30df16 | 13645 | |
ba8ca3e7 | 13646 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13647 | } |
ba8ca3e7 AM |
13648 | if (code_sec == input_section) |
13649 | can_plt_call = TRUE; | |
13650 | } | |
13651 | ||
13652 | if (!can_plt_call) | |
13653 | { | |
13654 | info->callbacks->einfo | |
13655 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
1a1fb627 | 13656 | "recompile with -fPIC\n"), |
ba8ca3e7 AM |
13657 | input_bfd, input_section, rel->r_offset, sym_name); |
13658 | ||
13659 | bfd_set_error (bfd_error_bad_value); | |
13660 | ret = FALSE; | |
721956f4 AM |
13661 | } |
13662 | ||
b25116a9 | 13663 | if (can_plt_call |
794e51c0 AM |
13664 | && (stub_entry->stub_type == ppc_stub_plt_call |
13665 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13666 | unresolved_reloc = FALSE; |
13667 | } | |
13668 | ||
6abec6bc AM |
13669 | if ((stub_entry == NULL |
13670 | || stub_entry->stub_type == ppc_stub_long_branch | |
13671 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13672 | && get_opd_info (sec) != NULL) |
13673 | { | |
13674 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13675 | bfd_vma off = (relocation + addend |
13676 | - sec->output_section->vma | |
13677 | - sec->output_offset); | |
aef36ac1 | 13678 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13679 | if (dest != (bfd_vma) -1) |
13680 | { | |
13681 | relocation = dest; | |
13682 | addend = 0; | |
bc30df16 | 13683 | reloc_dest = DEST_OPD; |
8387904d AM |
13684 | } |
13685 | } | |
13686 | ||
b25116a9 AM |
13687 | /* If the branch is out of reach we ought to have a long |
13688 | branch stub. */ | |
13689 | from = (rel->r_offset | |
13690 | + input_section->output_offset | |
13691 | + input_section->output_section->vma); | |
13692 | ||
6911b7dc AM |
13693 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
13694 | ? fdh->elf.other | |
13695 | : sym->st_other); | |
13696 | ||
6abec6bc AM |
13697 | if (stub_entry != NULL |
13698 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13699 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13700 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13701 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13702 | || (relocation + addend - from + max_br_offset | |
13703 | < 2 * max_br_offset))) | |
13704 | /* Don't use the stub if this branch is in range. */ | |
13705 | stub_entry = NULL; | |
b25116a9 AM |
13706 | |
13707 | if (stub_entry != NULL) | |
13708 | { | |
13709 | /* Munge up the value and addend so that we call the stub | |
13710 | rather than the procedure directly. */ | |
13711 | relocation = (stub_entry->stub_offset | |
13712 | + stub_entry->stub_sec->output_offset | |
13713 | + stub_entry->stub_sec->output_section->vma); | |
13714 | addend = 0; | |
bc30df16 | 13715 | reloc_dest = DEST_STUB; |
3b421ab3 | 13716 | |
794e51c0 AM |
13717 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13718 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13719 | && (ALWAYS_EMIT_R2SAVE | |
13720 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13721 | && rel + 1 < relend |
13722 | && rel[1].r_offset == rel->r_offset + 4 | |
13723 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13724 | relocation += 4; | |
b25116a9 AM |
13725 | } |
13726 | ||
13727 | if (insn != 0) | |
13728 | { | |
794e51c0 | 13729 | if (is_isa_v2) |
721956f4 | 13730 | { |
b25116a9 AM |
13731 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13732 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13733 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13734 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13735 | insn |= 0x02 << 21; | |
13736 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13737 | insn |= 0x08 << 21; | |
13738 | else | |
13739 | break; | |
13740 | } | |
13741 | else | |
13742 | { | |
13743 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13744 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13745 | insn ^= 0x01 << 21; |
721956f4 | 13746 | } |
b25116a9 AM |
13747 | |
13748 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13749 | } |
e86ce104 | 13750 | |
06da1e8e AM |
13751 | /* NOP out calls to undefined weak functions. |
13752 | We can thus call a weak function without first | |
13753 | checking whether the function is defined. */ | |
b25116a9 | 13754 | else if (h != NULL |
039b3fef | 13755 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13756 | && h->elf.dynindx == -1 |
b25116a9 AM |
13757 | && r_type == R_PPC64_REL24 |
13758 | && relocation == 0 | |
4cc603a5 | 13759 | && addend == 0) |
e86ce104 | 13760 | { |
06da1e8e AM |
13761 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13762 | continue; | |
e86ce104 | 13763 | } |
65f38f15 AM |
13764 | break; |
13765 | } | |
5bd4f169 | 13766 | |
65f38f15 | 13767 | /* Set `addend'. */ |
411e1bfb | 13768 | tls_type = 0; |
65f38f15 AM |
13769 | switch (r_type) |
13770 | { | |
13771 | default: | |
25f53a85 | 13772 | info->callbacks->einfo |
bc30df16 | 13773 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13774 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13775 | |
65f38f15 | 13776 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13777 | ret = FALSE; |
65f38f15 | 13778 | continue; |
5bd4f169 | 13779 | |
65f38f15 | 13780 | case R_PPC64_NONE: |
411e1bfb | 13781 | case R_PPC64_TLS: |
727fc41e AM |
13782 | case R_PPC64_TLSGD: |
13783 | case R_PPC64_TLSLD: | |
3b421ab3 | 13784 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13785 | case R_PPC64_GNU_VTINHERIT: |
13786 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13787 | continue; |
5bd4f169 AM |
13788 | |
13789 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13790 | address in the GOT as relocation value instead of the | |
411e1bfb | 13791 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13792 | symbol and put the symbol value there. */ |
411e1bfb AM |
13793 | case R_PPC64_GOT_TLSGD16: |
13794 | case R_PPC64_GOT_TLSGD16_LO: | |
13795 | case R_PPC64_GOT_TLSGD16_HI: | |
13796 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13797 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13798 | goto dogot; |
13799 | ||
13800 | case R_PPC64_GOT_TLSLD16: | |
13801 | case R_PPC64_GOT_TLSLD16_LO: | |
13802 | case R_PPC64_GOT_TLSLD16_HI: | |
13803 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13804 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13805 | goto dogot; |
13806 | ||
13807 | case R_PPC64_GOT_TPREL16_DS: | |
13808 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13809 | case R_PPC64_GOT_TPREL16_HI: | |
13810 | case R_PPC64_GOT_TPREL16_HA: | |
13811 | tls_type = TLS_TLS | TLS_TPREL; | |
13812 | goto dogot; | |
13813 | ||
13814 | case R_PPC64_GOT_DTPREL16_DS: | |
13815 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13816 | case R_PPC64_GOT_DTPREL16_HI: | |
13817 | case R_PPC64_GOT_DTPREL16_HA: | |
13818 | tls_type = TLS_TLS | TLS_DTPREL; | |
13819 | goto dogot; | |
13820 | ||
65f38f15 AM |
13821 | case R_PPC64_GOT16: |
13822 | case R_PPC64_GOT16_LO: | |
13823 | case R_PPC64_GOT16_HI: | |
13824 | case R_PPC64_GOT16_HA: | |
13825 | case R_PPC64_GOT16_DS: | |
13826 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13827 | dogot: |
5bd4f169 AM |
13828 | { |
13829 | /* Relocation is to the entry for this symbol in the global | |
13830 | offset table. */ | |
e717da7e | 13831 | asection *got; |
d881513a | 13832 | bfd_vma *offp; |
5bd4f169 | 13833 | bfd_vma off; |
d881513a | 13834 | unsigned long indx = 0; |
927be08e | 13835 | struct got_entry *ent; |
65f38f15 | 13836 | |
d881513a AM |
13837 | if (tls_type == (TLS_TLS | TLS_LD) |
13838 | && (h == NULL | |
f5385ebf | 13839 | || !h->elf.def_dynamic)) |
927be08e | 13840 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13841 | else |
5bd4f169 | 13842 | { |
5bd4f169 | 13843 | |
d881513a AM |
13844 | if (h != NULL) |
13845 | { | |
13846 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13847 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13848 | &h->elf) | |
d881513a | 13849 | || (info->shared |
afe397ea | 13850 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
13851 | /* This is actually a static link, or it is a |
13852 | -Bsymbolic link and the symbol is defined | |
13853 | locally, or the symbol was forced to be local | |
13854 | because of a version file. */ | |
13855 | ; | |
13856 | else | |
13857 | { | |
14acf4dc | 13858 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13859 | indx = h->elf.dynindx; |
d881513a AM |
13860 | unresolved_reloc = FALSE; |
13861 | } | |
039b3fef | 13862 | ent = h->elf.got.glist; |
d881513a | 13863 | } |
411e1bfb | 13864 | else |
5bd4f169 | 13865 | { |
d881513a AM |
13866 | if (local_got_ents == NULL) |
13867 | abort (); | |
13868 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 13869 | } |
d881513a AM |
13870 | |
13871 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 13872 | if (ent->addend == orig_rel.r_addend |
e717da7e | 13873 | && ent->owner == input_bfd |
d881513a AM |
13874 | && ent->tls_type == tls_type) |
13875 | break; | |
5bd4f169 | 13876 | } |
411e1bfb | 13877 | |
927be08e AM |
13878 | if (ent == NULL) |
13879 | abort (); | |
13880 | if (ent->is_indirect) | |
13881 | ent = ent->got.ent; | |
13882 | offp = &ent->got.offset; | |
13883 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
13884 | if (got == NULL) |
13885 | abort (); | |
13886 | ||
411e1bfb AM |
13887 | /* The offset must always be a multiple of 8. We use the |
13888 | least significant bit to record whether we have already | |
13889 | processed this entry. */ | |
d881513a | 13890 | off = *offp; |
411e1bfb AM |
13891 | if ((off & 1) != 0) |
13892 | off &= ~1; | |
5bd4f169 AM |
13893 | else |
13894 | { | |
411e1bfb AM |
13895 | /* Generate relocs for the dynamic linker, except in |
13896 | the case of TLSLD where we'll use one entry per | |
13897 | module. */ | |
25f23106 AM |
13898 | asection *relgot; |
13899 | bfd_boolean ifunc; | |
e717da7e | 13900 | |
d881513a | 13901 | *offp = off | 1; |
25f23106 AM |
13902 | relgot = NULL; |
13903 | ifunc = (h != NULL | |
13904 | ? h->elf.type == STT_GNU_IFUNC | |
13905 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 13906 | if (ifunc) |
33e44f2e | 13907 | relgot = htab->elf.irelplt; |
19e08130 AM |
13908 | else if ((info->shared || indx != 0) |
13909 | && (h == NULL | |
13910 | || (tls_type == (TLS_TLS | TLS_LD) | |
13911 | && !h->elf.def_dynamic) | |
13912 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
13913 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
13914 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 13915 | if (relgot != NULL) |
5bd4f169 | 13916 | { |
e717da7e AM |
13917 | outrel.r_offset = (got->output_section->vma |
13918 | + got->output_offset | |
411e1bfb | 13919 | + off); |
4cc603a5 | 13920 | outrel.r_addend = addend; |
d881513a | 13921 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 13922 | { |
411e1bfb | 13923 | outrel.r_addend = 0; |
e515b051 | 13924 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
13925 | if (tls_type == (TLS_TLS | TLS_GD)) |
13926 | { | |
e717da7e AM |
13927 | loc = relgot->contents; |
13928 | loc += (relgot->reloc_count++ | |
d881513a AM |
13929 | * sizeof (Elf64_External_Rela)); |
13930 | bfd_elf64_swap_reloca_out (output_bfd, | |
13931 | &outrel, loc); | |
e515b051 | 13932 | outrel.r_offset += 8; |
4cc603a5 | 13933 | outrel.r_addend = addend; |
d881513a AM |
13934 | outrel.r_info |
13935 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 13936 | } |
411e1bfb | 13937 | } |
951fd09b | 13938 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 13939 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 13940 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13941 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
13942 | else if (indx != 0) |
13943 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
13944 | else | |
81407a69 | 13945 | { |
25f23106 AM |
13946 | if (ifunc) |
13947 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13948 | else | |
13949 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
13950 | |
13951 | /* Write the .got section contents for the sake | |
13952 | of prelink. */ | |
e717da7e | 13953 | loc = got->contents + off; |
23fbd6fa JJ |
13954 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
13955 | loc); | |
81407a69 | 13956 | } |
81407a69 AM |
13957 | |
13958 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
13959 | { |
13960 | outrel.r_addend += relocation; | |
13961 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 13962 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 13963 | } |
e717da7e AM |
13964 | loc = relgot->contents; |
13965 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
13966 | * sizeof (Elf64_External_Rela)); |
13967 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
13968 | } | |
13969 | ||
ad8e1ba5 | 13970 | /* Init the .got section contents here if we're not |
81407a69 | 13971 | emitting a reloc. */ |
d881513a | 13972 | else |
411e1bfb | 13973 | { |
4cc603a5 | 13974 | relocation += addend; |
7b609f53 AM |
13975 | if (tls_type == (TLS_TLS | TLS_LD)) |
13976 | relocation = 1; | |
13977 | else if (tls_type != 0) | |
411e1bfb | 13978 | { |
e1918d23 | 13979 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 13980 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13981 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 13982 | |
7b609f53 AM |
13983 | if (tls_type == (TLS_TLS | TLS_GD)) |
13984 | { | |
13985 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 13986 | got->contents + off + 8); |
7b609f53 AM |
13987 | relocation = 1; |
13988 | } | |
411e1bfb | 13989 | } |
7b609f53 | 13990 | |
411e1bfb | 13991 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 13992 | got->contents + off); |
5bd4f169 AM |
13993 | } |
13994 | } | |
13995 | ||
65f38f15 AM |
13996 | if (off >= (bfd_vma) -2) |
13997 | abort (); | |
13998 | ||
bf102f86 AM |
13999 | relocation = got->output_section->vma + got->output_offset + off; |
14000 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 14001 | } |
65f38f15 AM |
14002 | break; |
14003 | ||
14004 | case R_PPC64_PLT16_HA: | |
14005 | case R_PPC64_PLT16_HI: | |
14006 | case R_PPC64_PLT16_LO: | |
14007 | case R_PPC64_PLT32: | |
14008 | case R_PPC64_PLT64: | |
14009 | /* Relocation is to the entry for this symbol in the | |
14010 | procedure linkage table. */ | |
14011 | ||
14012 | /* Resolve a PLT reloc against a local symbol directly, | |
14013 | without using the procedure linkage table. */ | |
14014 | if (h == NULL) | |
14015 | break; | |
14016 | ||
411e1bfb AM |
14017 | /* It's possible that we didn't make a PLT entry for this |
14018 | symbol. This happens when statically linking PIC code, | |
14019 | or when using -Bsymbolic. Go find a match if there is a | |
14020 | PLT entry. */ | |
33e44f2e | 14021 | if (htab->elf.splt != NULL) |
65f38f15 | 14022 | { |
411e1bfb | 14023 | struct plt_entry *ent; |
039b3fef | 14024 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14025 | if (ent->plt.offset != (bfd_vma) -1 |
14026 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14027 | { |
33e44f2e AM |
14028 | relocation = (htab->elf.splt->output_section->vma |
14029 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14030 | + ent->plt.offset); |
14031 | unresolved_reloc = FALSE; | |
a345bc8d | 14032 | break; |
411e1bfb | 14033 | } |
65f38f15 | 14034 | } |
65f38f15 | 14035 | break; |
5bd4f169 | 14036 | |
0b13192e AM |
14037 | case R_PPC64_TOC: |
14038 | /* Relocation value is TOC base. */ | |
14039 | relocation = TOCstart; | |
cf35638d | 14040 | if (r_symndx == STN_UNDEF) |
0b13192e | 14041 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
14042 | else if (unresolved_reloc) |
14043 | ; | |
14044 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
14045 | relocation += htab->stub_group[sec->id].toc_off; |
14046 | else | |
14047 | unresolved_reloc = TRUE; | |
ab96bf03 | 14048 | goto dodyn; |
0b13192e | 14049 | |
5bd4f169 AM |
14050 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14051 | which is the address of the start of the TOC plus 0x8000. | |
14052 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14053 | in this order. */ | |
65f38f15 AM |
14054 | case R_PPC64_TOC16: |
14055 | case R_PPC64_TOC16_LO: | |
14056 | case R_PPC64_TOC16_HI: | |
14057 | case R_PPC64_TOC16_DS: | |
14058 | case R_PPC64_TOC16_LO_DS: | |
14059 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 14060 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
14061 | break; |
14062 | ||
14063 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14064 | case R_PPC64_SECTOFF: |
14065 | case R_PPC64_SECTOFF_LO: | |
14066 | case R_PPC64_SECTOFF_HI: | |
14067 | case R_PPC64_SECTOFF_DS: | |
14068 | case R_PPC64_SECTOFF_LO_DS: | |
14069 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14070 | if (sec != NULL) |
65f38f15 | 14071 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14072 | break; |
14073 | ||
25f23106 AM |
14074 | case R_PPC64_REL16: |
14075 | case R_PPC64_REL16_LO: | |
14076 | case R_PPC64_REL16_HI: | |
14077 | case R_PPC64_REL16_HA: | |
14078 | break; | |
14079 | ||
721956f4 AM |
14080 | case R_PPC64_REL14: |
14081 | case R_PPC64_REL14_BRNTAKEN: | |
14082 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14083 | case R_PPC64_REL24: |
14084 | break; | |
14085 | ||
411e1bfb AM |
14086 | case R_PPC64_TPREL16: |
14087 | case R_PPC64_TPREL16_LO: | |
14088 | case R_PPC64_TPREL16_HI: | |
14089 | case R_PPC64_TPREL16_HA: | |
14090 | case R_PPC64_TPREL16_DS: | |
14091 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14092 | case R_PPC64_TPREL16_HIGH: |
14093 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14094 | case R_PPC64_TPREL16_HIGHER: |
14095 | case R_PPC64_TPREL16_HIGHERA: | |
14096 | case R_PPC64_TPREL16_HIGHEST: | |
14097 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14098 | if (h != NULL |
14099 | && h->elf.root.type == bfd_link_hash_undefweak | |
14100 | && h->elf.dynindx == -1) | |
14101 | { | |
14102 | /* Make this relocation against an undefined weak symbol | |
14103 | resolve to zero. This is really just a tweak, since | |
14104 | code using weak externs ought to check that they are | |
14105 | defined before using them. */ | |
14106 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14107 | ||
14108 | insn = bfd_get_32 (output_bfd, p); | |
14109 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14110 | if (insn != 0) | |
14111 | bfd_put_32 (output_bfd, insn, p); | |
14112 | break; | |
14113 | } | |
e1918d23 | 14114 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14115 | if (info->shared) |
14116 | /* The TPREL16 relocs shouldn't really be used in shared | |
14117 | libs as they will result in DT_TEXTREL being set, but | |
14118 | support them anyway. */ | |
14119 | goto dodyn; | |
14120 | break; | |
14121 | ||
14122 | case R_PPC64_DTPREL16: | |
14123 | case R_PPC64_DTPREL16_LO: | |
14124 | case R_PPC64_DTPREL16_HI: | |
14125 | case R_PPC64_DTPREL16_HA: | |
14126 | case R_PPC64_DTPREL16_DS: | |
14127 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14128 | case R_PPC64_DTPREL16_HIGH: |
14129 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14130 | case R_PPC64_DTPREL16_HIGHER: |
14131 | case R_PPC64_DTPREL16_HIGHERA: | |
14132 | case R_PPC64_DTPREL16_HIGHEST: | |
14133 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 14134 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14135 | break; |
14136 | ||
e515b051 AM |
14137 | case R_PPC64_DTPMOD64: |
14138 | relocation = 1; | |
14139 | addend = 0; | |
14140 | goto dodyn; | |
14141 | ||
411e1bfb | 14142 | case R_PPC64_TPREL64: |
e1918d23 | 14143 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14144 | goto dodyn; |
14145 | ||
14146 | case R_PPC64_DTPREL64: | |
e1918d23 | 14147 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14148 | /* Fall thru */ |
14149 | ||
65f38f15 AM |
14150 | /* Relocations that may need to be propagated if this is a |
14151 | dynamic object. */ | |
04c9666a | 14152 | case R_PPC64_REL30: |
65f38f15 AM |
14153 | case R_PPC64_REL32: |
14154 | case R_PPC64_REL64: | |
14155 | case R_PPC64_ADDR14: | |
14156 | case R_PPC64_ADDR14_BRNTAKEN: | |
14157 | case R_PPC64_ADDR14_BRTAKEN: | |
14158 | case R_PPC64_ADDR16: | |
14159 | case R_PPC64_ADDR16_DS: | |
14160 | case R_PPC64_ADDR16_HA: | |
14161 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14162 | case R_PPC64_ADDR16_HIGH: |
14163 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14164 | case R_PPC64_ADDR16_HIGHER: |
14165 | case R_PPC64_ADDR16_HIGHERA: | |
14166 | case R_PPC64_ADDR16_HIGHEST: | |
14167 | case R_PPC64_ADDR16_HIGHESTA: | |
14168 | case R_PPC64_ADDR16_LO: | |
14169 | case R_PPC64_ADDR16_LO_DS: | |
14170 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14171 | case R_PPC64_ADDR32: |
14172 | case R_PPC64_ADDR64: | |
14173 | case R_PPC64_UADDR16: | |
14174 | case R_PPC64_UADDR32: | |
14175 | case R_PPC64_UADDR64: | |
411e1bfb | 14176 | dodyn: |
5d1634d7 | 14177 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14178 | break; |
14179 | ||
41bd81ab AM |
14180 | if (NO_OPD_RELOCS && is_opd) |
14181 | break; | |
14182 | ||
65f38f15 | 14183 | if ((info->shared |
4e795f50 | 14184 | && (h == NULL |
039b3fef AM |
14185 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14186 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14187 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14188 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
14189 | || (ELIMINATE_COPY_RELOCS |
14190 | && !info->shared | |
65f38f15 | 14191 | && h != NULL |
039b3fef | 14192 | && h->elf.dynindx != -1 |
f5385ebf | 14193 | && !h->elf.non_got_ref |
25f23106 AM |
14194 | && !h->elf.def_regular) |
14195 | || (!info->shared | |
14196 | && (h != NULL | |
14197 | ? h->elf.type == STT_GNU_IFUNC | |
14198 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14199 | { |
b34976b6 | 14200 | bfd_boolean skip, relocate; |
65f38f15 | 14201 | asection *sreloc; |
1cf1f670 | 14202 | bfd_vma out_off; |
65f38f15 AM |
14203 | |
14204 | /* When generating a dynamic object, these relocations | |
14205 | are copied into the output file to be resolved at run | |
14206 | time. */ | |
14207 | ||
b34976b6 AM |
14208 | skip = FALSE; |
14209 | relocate = FALSE; | |
65f38f15 | 14210 | |
1cf1f670 AM |
14211 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14212 | input_section, rel->r_offset); | |
14213 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14214 | skip = TRUE; |
1cf1f670 | 14215 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14216 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14217 | out_off += (input_section->output_section->vma |
14218 | + input_section->output_offset); | |
14219 | outrel.r_offset = out_off; | |
411e1bfb | 14220 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14221 | |
1cf1f670 AM |
14222 | /* Optimize unaligned reloc use. */ |
14223 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14224 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14225 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14226 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14227 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14228 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14229 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14230 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14231 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14232 | ||
65f38f15 | 14233 | if (skip) |
0bb2d96a | 14234 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14235 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14236 | && !is_opd |
14237 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14238 | { |
14239 | BFD_ASSERT (h->elf.dynindx != -1); | |
14240 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14241 | } | |
65f38f15 AM |
14242 | else |
14243 | { | |
41bd81ab AM |
14244 | /* This symbol is local, or marked to become local, |
14245 | or this is an opd section reloc which must point | |
14246 | at a local function. */ | |
65f38f15 | 14247 | outrel.r_addend += relocation; |
e86ce104 | 14248 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14249 | { |
3fad3c7c | 14250 | if (is_opd && h != NULL) |
afbe61cf AM |
14251 | { |
14252 | /* Lie about opd entries. This case occurs | |
14253 | when building shared libraries and we | |
14254 | reference a function in another shared | |
3fad3c7c AM |
14255 | lib. The same thing happens for a weak |
14256 | definition in an application that's | |
14257 | overridden by a strong definition in a | |
14258 | shared lib. (I believe this is a generic | |
14259 | bug in binutils handling of weak syms.) | |
14260 | In these cases we won't use the opd | |
1e2f5b6e | 14261 | entry in this lib. */ |
b34976b6 | 14262 | unresolved_reloc = FALSE; |
afbe61cf | 14263 | } |
25f23106 AM |
14264 | if (!is_opd |
14265 | && r_type == R_PPC64_ADDR64 | |
14266 | && (h != NULL | |
14267 | ? h->elf.type == STT_GNU_IFUNC | |
14268 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14269 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14270 | else | |
14271 | { | |
14272 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14273 | |
25f23106 AM |
14274 | /* We need to relocate .opd contents for ld.so. |
14275 | Prelink also wants simple and consistent rules | |
14276 | for relocs. This make all RELATIVE relocs have | |
14277 | *r_offset equal to r_addend. */ | |
14278 | relocate = TRUE; | |
14279 | } | |
65f38f15 AM |
14280 | } |
14281 | else | |
14282 | { | |
14283 | long indx = 0; | |
14284 | ||
25f23106 AM |
14285 | if (h != NULL |
14286 | ? h->elf.type == STT_GNU_IFUNC | |
14287 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14288 | { | |
25f53a85 | 14289 | info->callbacks->einfo |
bc30df16 AM |
14290 | (_("%P: %H: %s for indirect " |
14291 | "function `%T' unsupported\n"), | |
25f53a85 | 14292 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14293 | ppc64_elf_howto_table[r_type]->name, |
14294 | sym_name); | |
14295 | ret = FALSE; | |
14296 | } | |
cf35638d | 14297 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14298 | ; |
14299 | else if (sec == NULL || sec->owner == NULL) | |
14300 | { | |
14301 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14302 | return FALSE; |
65f38f15 AM |
14303 | } |
14304 | else | |
14305 | { | |
14306 | asection *osec; | |
14307 | ||
14308 | osec = sec->output_section; | |
14309 | indx = elf_section_data (osec)->dynindx; | |
14310 | ||
74541ad4 AM |
14311 | if (indx == 0) |
14312 | { | |
14313 | if ((osec->flags & SEC_READONLY) == 0 | |
14314 | && htab->elf.data_index_section != NULL) | |
14315 | osec = htab->elf.data_index_section; | |
14316 | else | |
14317 | osec = htab->elf.text_index_section; | |
14318 | indx = elf_section_data (osec)->dynindx; | |
14319 | } | |
14320 | BFD_ASSERT (indx != 0); | |
14321 | ||
65f38f15 AM |
14322 | /* We are turning this relocation into one |
14323 | against a section symbol, so subtract out | |
14324 | the output section's address but not the | |
14325 | offset of the input section in the output | |
14326 | section. */ | |
14327 | outrel.r_addend -= osec->vma; | |
14328 | } | |
14329 | ||
14330 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14331 | } | |
14332 | } | |
14333 | ||
14334 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14335 | if (h != NULL |
14336 | ? h->elf.type == STT_GNU_IFUNC | |
14337 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14338 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14339 | if (sreloc == NULL) |
14340 | abort (); | |
14341 | ||
dfbb6ac9 AM |
14342 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14343 | >= sreloc->size) | |
14344 | abort (); | |
947216bf AM |
14345 | loc = sreloc->contents; |
14346 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14347 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14348 | ||
14349 | /* If this reloc is against an external symbol, it will | |
14350 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14351 | anything now. However, for the sake of prelink ensure |
14352 | that the section contents are a known value. */ | |
65f38f15 | 14353 | if (! relocate) |
81407a69 AM |
14354 | { |
14355 | unresolved_reloc = FALSE; | |
14356 | /* The value chosen here is quite arbitrary as ld.so | |
14357 | ignores section contents except for the special | |
14358 | case of .opd where the contents might be accessed | |
14359 | before relocation. Choose zero, as that won't | |
14360 | cause reloc overflow. */ | |
14361 | relocation = 0; | |
14362 | addend = 0; | |
14363 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14364 | to improve backward compatibility with older | |
14365 | versions of ld. */ | |
14366 | if (r_type == R_PPC64_ADDR64) | |
14367 | addend = outrel.r_addend; | |
14368 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14369 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14370 | addend = (input_section->output_section->vma |
14371 | + input_section->output_offset | |
14372 | + rel->r_offset); | |
81407a69 | 14373 | } |
65f38f15 | 14374 | } |
5bd4f169 AM |
14375 | break; |
14376 | ||
65f38f15 AM |
14377 | case R_PPC64_COPY: |
14378 | case R_PPC64_GLOB_DAT: | |
14379 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14380 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14381 | case R_PPC64_RELATIVE: |
14382 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14383 | files. */ | |
ae9a127f | 14384 | /* Fall through. */ |
65f38f15 AM |
14385 | |
14386 | case R_PPC64_PLTGOT16: | |
14387 | case R_PPC64_PLTGOT16_DS: | |
14388 | case R_PPC64_PLTGOT16_HA: | |
14389 | case R_PPC64_PLTGOT16_HI: | |
14390 | case R_PPC64_PLTGOT16_LO: | |
14391 | case R_PPC64_PLTGOT16_LO_DS: | |
14392 | case R_PPC64_PLTREL32: | |
14393 | case R_PPC64_PLTREL64: | |
14394 | /* These ones haven't been implemented yet. */ | |
14395 | ||
25f53a85 | 14396 | info->callbacks->einfo |
bc30df16 | 14397 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14398 | input_bfd, |
4ce794b7 | 14399 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14400 | |
14401 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14402 | ret = FALSE; |
5bd4f169 | 14403 | continue; |
65f38f15 | 14404 | } |
5bd4f169 | 14405 | |
67f0cbdb AM |
14406 | /* Multi-instruction sequences that access the TOC can be |
14407 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14408 | to nop; addi rb,r2,x; */ | |
14409 | switch (r_type) | |
14410 | { | |
14411 | default: | |
14412 | break; | |
14413 | ||
14414 | case R_PPC64_GOT_TLSLD16_HI: | |
14415 | case R_PPC64_GOT_TLSGD16_HI: | |
14416 | case R_PPC64_GOT_TPREL16_HI: | |
14417 | case R_PPC64_GOT_DTPREL16_HI: | |
14418 | case R_PPC64_GOT16_HI: | |
14419 | case R_PPC64_TOC16_HI: | |
14420 | /* These relocs would only be useful if building up an | |
14421 | offset to later add to r2, perhaps in an indexed | |
14422 | addressing mode instruction. Don't try to optimize. | |
14423 | Unfortunately, the possibility of someone building up an | |
14424 | offset like this or even with the HA relocs, means that | |
14425 | we need to check the high insn when optimizing the low | |
14426 | insn. */ | |
14427 | break; | |
14428 | ||
14429 | case R_PPC64_GOT_TLSLD16_HA: | |
14430 | case R_PPC64_GOT_TLSGD16_HA: | |
14431 | case R_PPC64_GOT_TPREL16_HA: | |
14432 | case R_PPC64_GOT_DTPREL16_HA: | |
14433 | case R_PPC64_GOT16_HA: | |
14434 | case R_PPC64_TOC16_HA: | |
98528052 | 14435 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14436 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14437 | { |
14438 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14439 | bfd_put_32 (input_bfd, NOP, p); | |
14440 | } | |
67f0cbdb AM |
14441 | break; |
14442 | ||
14443 | case R_PPC64_GOT_TLSLD16_LO: | |
14444 | case R_PPC64_GOT_TLSGD16_LO: | |
14445 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14446 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14447 | case R_PPC64_GOT16_LO: | |
14448 | case R_PPC64_GOT16_LO_DS: | |
14449 | case R_PPC64_TOC16_LO: | |
14450 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14451 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14452 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14453 | { |
14454 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14455 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14456 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14457 | { | |
14458 | /* Transform addic to addi when we change reg. */ | |
14459 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14460 | insn |= (14u << 26) | (2 << 16); | |
14461 | } | |
14462 | else | |
67f0cbdb | 14463 | { |
98528052 AM |
14464 | insn &= ~(0x1f << 16); |
14465 | insn |= 2 << 16; | |
67f0cbdb | 14466 | } |
560c8763 | 14467 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14468 | } |
14469 | break; | |
14470 | } | |
14471 | ||
65f38f15 AM |
14472 | /* Do any further special processing. */ |
14473 | switch (r_type) | |
14474 | { | |
14475 | default: | |
14476 | break; | |
14477 | ||
25f23106 | 14478 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14479 | case R_PPC64_ADDR16_HA: |
14480 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14481 | case R_PPC64_ADDR16_HIGHERA: |
14482 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14483 | case R_PPC64_TOC16_HA: |
14484 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14485 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14486 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14487 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14488 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14489 | case R_PPC64_DTPREL16_HA: |
14490 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14491 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14492 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14493 | /* It's just possible that this symbol is a weak symbol |
14494 | that's not actually defined anywhere. In that case, | |
14495 | 'sec' would be NULL, and we should leave the symbol | |
14496 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14497 | if (sec == NULL) |
14498 | break; | |
14499 | /* Fall thru */ | |
14500 | ||
14501 | case R_PPC64_GOT16_HA: | |
14502 | case R_PPC64_PLTGOT16_HA: | |
14503 | case R_PPC64_PLT16_HA: | |
14504 | case R_PPC64_GOT_TLSGD16_HA: | |
14505 | case R_PPC64_GOT_TLSLD16_HA: | |
14506 | case R_PPC64_GOT_TPREL16_HA: | |
14507 | case R_PPC64_GOT_DTPREL16_HA: | |
14508 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14509 | Bits 0:15 are not used. */ | |
14510 | addend += 0x8000; | |
65f38f15 AM |
14511 | break; |
14512 | ||
14513 | case R_PPC64_ADDR16_DS: | |
14514 | case R_PPC64_ADDR16_LO_DS: | |
14515 | case R_PPC64_GOT16_DS: | |
14516 | case R_PPC64_GOT16_LO_DS: | |
14517 | case R_PPC64_PLT16_LO_DS: | |
14518 | case R_PPC64_SECTOFF_DS: | |
14519 | case R_PPC64_SECTOFF_LO_DS: | |
14520 | case R_PPC64_TOC16_DS: | |
14521 | case R_PPC64_TOC16_LO_DS: | |
14522 | case R_PPC64_PLTGOT16_DS: | |
14523 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14524 | case R_PPC64_GOT_TPREL16_DS: |
14525 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14526 | case R_PPC64_GOT_DTPREL16_DS: | |
14527 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14528 | case R_PPC64_TPREL16_DS: | |
14529 | case R_PPC64_TPREL16_LO_DS: | |
14530 | case R_PPC64_DTPREL16_DS: | |
14531 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14532 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14533 | mask = 3; | |
14534 | /* If this reloc is against an lq insn, then the value must be | |
14535 | a multiple of 16. This is somewhat of a hack, but the | |
14536 | "correct" way to do this by defining _DQ forms of all the | |
14537 | _DS relocs bloats all reloc switches in this file. It | |
14538 | doesn't seem to make much sense to use any of these relocs | |
14539 | in data, so testing the insn should be safe. */ | |
494dac0c | 14540 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14541 | mask = 15; |
14542 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14543 | { |
25f53a85 | 14544 | info->callbacks->einfo |
8de848d8 | 14545 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14546 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 14547 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 14548 | mask + 1); |
65f38f15 | 14549 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14550 | ret = FALSE; |
65f38f15 AM |
14551 | continue; |
14552 | } | |
14553 | break; | |
5bd4f169 AM |
14554 | } |
14555 | ||
239e1f3a AM |
14556 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14557 | because such sections are not SEC_ALLOC and thus ld.so will | |
14558 | not process them. */ | |
65f38f15 | 14559 | if (unresolved_reloc |
239e1f3a | 14560 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14561 | && h->elf.def_dynamic) |
14562 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14563 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14564 | { |
25f53a85 | 14565 | info->callbacks->einfo |
bc30df16 | 14566 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14567 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 14568 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 14569 | h->elf.root.root.string); |
b34976b6 | 14570 | ret = FALSE; |
9c07fe7c | 14571 | } |
5bd4f169 | 14572 | |
65f38f15 | 14573 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
14574 | input_bfd, |
14575 | input_section, | |
14576 | contents, | |
411e1bfb | 14577 | rel->r_offset, |
5bd4f169 AM |
14578 | relocation, |
14579 | addend); | |
14580 | ||
ef60b7ff | 14581 | if (r != bfd_reloc_ok) |
5bd4f169 | 14582 | { |
bc30df16 AM |
14583 | char *more_info = NULL; |
14584 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
14585 | ||
14586 | if (reloc_dest != DEST_NORMAL) | |
14587 | { | |
14588 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14589 | if (more_info != NULL) | |
14590 | { | |
14591 | strcpy (more_info, reloc_name); | |
14592 | strcat (more_info, (reloc_dest == DEST_OPD | |
14593 | ? " (OPD)" : " (stub)")); | |
14594 | reloc_name = more_info; | |
14595 | } | |
14596 | } | |
14597 | ||
cd27b276 | 14598 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14599 | { |
cd27b276 AM |
14600 | if (warned) |
14601 | continue; | |
14602 | if (h != NULL | |
039b3fef | 14603 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 14604 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
14605 | { |
14606 | /* Assume this is a call protected by other code that | |
14607 | detects the symbol is undefined. If this is the case, | |
14608 | we can safely ignore the overflow. If not, the | |
14609 | program is hosed anyway, and a little warning isn't | |
14610 | going to help. */ | |
14611 | ||
14612 | continue; | |
14613 | } | |
14614 | ||
ef60b7ff | 14615 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14616 | (info, &h->elf.root, sym_name, |
14617 | reloc_name, orig_rel.r_addend, | |
14618 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14619 | return FALSE; |
ef60b7ff AM |
14620 | } |
14621 | else | |
14622 | { | |
25f53a85 | 14623 | info->callbacks->einfo |
bc30df16 | 14624 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14625 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14626 | reloc_name, sym_name, (int) r); |
b34976b6 | 14627 | ret = FALSE; |
ef60b7ff | 14628 | } |
bc30df16 AM |
14629 | if (more_info != NULL) |
14630 | free (more_info); | |
5bd4f169 | 14631 | } |
5bd4f169 AM |
14632 | } |
14633 | ||
645ea6a9 AM |
14634 | /* If we're emitting relocations, then shortly after this function |
14635 | returns, reloc offsets and addends for this section will be | |
14636 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14637 | file rather than the input. Save a copy of the relocs for |
14638 | opd_entry_value. */ | |
4cc603a5 | 14639 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14640 | { |
14641 | bfd_size_type amt; | |
14642 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14643 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14644 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14645 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14646 | if (rel == NULL) |
14647 | return FALSE; | |
14648 | memcpy (rel, relocs, amt); | |
14649 | } | |
5bd4f169 AM |
14650 | return ret; |
14651 | } | |
14652 | ||
754021d0 AM |
14653 | /* Adjust the value of any local symbols in opd sections. */ |
14654 | ||
6e0b88f1 | 14655 | static int |
754021d0 AM |
14656 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14657 | const char *name ATTRIBUTE_UNUSED, | |
14658 | Elf_Internal_Sym *elfsym, | |
14659 | asection *input_sec, | |
14660 | struct elf_link_hash_entry *h) | |
14661 | { | |
74f0fb50 AM |
14662 | struct _opd_sec_data *opd; |
14663 | long adjust; | |
754021d0 AM |
14664 | bfd_vma value; |
14665 | ||
4025353c | 14666 | if (h != NULL) |
6e0b88f1 | 14667 | return 1; |
4025353c | 14668 | |
74f0fb50 AM |
14669 | opd = get_opd_info (input_sec); |
14670 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14671 | return 1; |
754021d0 AM |
14672 | |
14673 | value = elfsym->st_value - input_sec->output_offset; | |
14674 | if (!info->relocatable) | |
14675 | value -= input_sec->output_section->vma; | |
14676 | ||
74f0fb50 | 14677 | adjust = opd->adjust[value / 8]; |
4025353c | 14678 | if (adjust == -1) |
6e0b88f1 AM |
14679 | return 2; |
14680 | ||
14681 | elfsym->st_value += adjust; | |
14682 | return 1; | |
754021d0 AM |
14683 | } |
14684 | ||
5bd4f169 AM |
14685 | /* Finish up dynamic symbol handling. We set the contents of various |
14686 | dynamic sections here. */ | |
14687 | ||
b34976b6 | 14688 | static bfd_boolean |
4ce794b7 AM |
14689 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14690 | struct bfd_link_info *info, | |
14691 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14692 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14693 | { |
65f38f15 | 14694 | struct ppc_link_hash_table *htab; |
8387904d AM |
14695 | struct plt_entry *ent; |
14696 | Elf_Internal_Rela rela; | |
14697 | bfd_byte *loc; | |
5bd4f169 | 14698 | |
65f38f15 | 14699 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14700 | if (htab == NULL) |
14701 | return FALSE; | |
5bd4f169 | 14702 | |
8387904d AM |
14703 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14704 | if (ent->plt.offset != (bfd_vma) -1) | |
14705 | { | |
14706 | /* This symbol has an entry in the procedure linkage | |
14707 | table. Set it up. */ | |
e054468f AM |
14708 | if (!htab->elf.dynamic_sections_created |
14709 | || h->dynindx == -1) | |
14710 | { | |
14711 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14712 | && h->def_regular | |
14713 | && (h->root.type == bfd_link_hash_defined | |
14714 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
14715 | rela.r_offset = (htab->elf.iplt->output_section->vma |
14716 | + htab->elf.iplt->output_offset | |
25f23106 | 14717 | + ent->plt.offset); |
ee67d69a AM |
14718 | if (htab->opd_abi) |
14719 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14720 | else | |
14721 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
14722 | rela.r_addend = (h->root.u.def.value |
14723 | + h->root.u.def.section->output_offset | |
14724 | + h->root.u.def.section->output_section->vma | |
14725 | + ent->addend); | |
33e44f2e AM |
14726 | loc = (htab->elf.irelplt->contents |
14727 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 14728 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
14729 | } |
14730 | else | |
14731 | { | |
33e44f2e AM |
14732 | rela.r_offset = (htab->elf.splt->output_section->vma |
14733 | + htab->elf.splt->output_offset | |
25f23106 | 14734 | + ent->plt.offset); |
e054468f AM |
14735 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14736 | rela.r_addend = ent->addend; | |
33e44f2e | 14737 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
14738 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
14739 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 14740 | } |
8387904d | 14741 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
14742 | |
14743 | if (!htab->opd_abi) | |
14744 | { | |
14745 | if (!h->def_regular) | |
14746 | { | |
14747 | /* Mark the symbol as undefined, rather than as | |
14748 | defined in glink. Leave the value if there were | |
14749 | any relocations where pointer equality matters | |
14750 | (this is a clue for the dynamic linker, to make | |
14751 | function pointer comparisons work between an | |
14752 | application and shared library), otherwise set it | |
14753 | to zero. */ | |
14754 | sym->st_shndx = SHN_UNDEF; | |
14755 | if (!h->pointer_equality_needed) | |
14756 | sym->st_value = 0; | |
14757 | else if (!h->ref_regular_nonweak) | |
14758 | { | |
14759 | /* This breaks function pointer comparisons, but | |
14760 | that is better than breaking tests for a NULL | |
14761 | function pointer. */ | |
14762 | sym->st_value = 0; | |
14763 | } | |
14764 | } | |
14765 | } | |
8387904d | 14766 | } |
5bd4f169 | 14767 | |
f5385ebf | 14768 | if (h->needs_copy) |
5bd4f169 | 14769 | { |
65f38f15 | 14770 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14771 | |
65f38f15 AM |
14772 | if (h->dynindx == -1 |
14773 | || (h->root.type != bfd_link_hash_defined | |
14774 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14775 | || htab->relbss == NULL) |
65f38f15 | 14776 | abort (); |
5bd4f169 AM |
14777 | |
14778 | rela.r_offset = (h->root.u.def.value | |
14779 | + h->root.u.def.section->output_section->vma | |
14780 | + h->root.u.def.section->output_offset); | |
14781 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14782 | rela.r_addend = 0; | |
4ce794b7 AM |
14783 | loc = htab->relbss->contents; |
14784 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14785 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14786 | } |
14787 | ||
b34976b6 | 14788 | return TRUE; |
5bd4f169 AM |
14789 | } |
14790 | ||
65f38f15 AM |
14791 | /* Used to decide how to sort relocs in an optimal manner for the |
14792 | dynamic linker, before writing them out. */ | |
14793 | ||
14794 | static enum elf_reloc_type_class | |
7e612e98 AM |
14795 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14796 | const asection *rel_sec, | |
14797 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14798 | { |
04c9666a | 14799 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14800 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14801 | ||
33e44f2e | 14802 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 14803 | return reloc_class_ifunc; |
a33d1f77 | 14804 | |
4ce794b7 | 14805 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14806 | switch (r_type) |
65f38f15 AM |
14807 | { |
14808 | case R_PPC64_RELATIVE: | |
14809 | return reloc_class_relative; | |
14810 | case R_PPC64_JMP_SLOT: | |
14811 | return reloc_class_plt; | |
14812 | case R_PPC64_COPY: | |
14813 | return reloc_class_copy; | |
14814 | default: | |
14815 | return reloc_class_normal; | |
14816 | } | |
14817 | } | |
14818 | ||
5bd4f169 AM |
14819 | /* Finish up the dynamic sections. */ |
14820 | ||
b34976b6 | 14821 | static bfd_boolean |
4ce794b7 AM |
14822 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14823 | struct bfd_link_info *info) | |
5bd4f169 | 14824 | { |
65f38f15 AM |
14825 | struct ppc_link_hash_table *htab; |
14826 | bfd *dynobj; | |
5bd4f169 | 14827 | asection *sdyn; |
5bd4f169 | 14828 | |
65f38f15 | 14829 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14830 | if (htab == NULL) |
14831 | return FALSE; | |
14832 | ||
65f38f15 | 14833 | dynobj = htab->elf.dynobj; |
3d4d4302 | 14834 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 14835 | |
65f38f15 | 14836 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 14837 | { |
5bd4f169 AM |
14838 | Elf64_External_Dyn *dyncon, *dynconend; |
14839 | ||
33e44f2e | 14840 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 14841 | abort (); |
5bd4f169 AM |
14842 | |
14843 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 14844 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
14845 | for (; dyncon < dynconend; dyncon++) |
14846 | { | |
14847 | Elf_Internal_Dyn dyn; | |
19397422 | 14848 | asection *s; |
5bd4f169 AM |
14849 | |
14850 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
14851 | ||
14852 | switch (dyn.d_tag) | |
14853 | { | |
65f38f15 AM |
14854 | default: |
14855 | continue; | |
5bd4f169 | 14856 | |
5d1634d7 | 14857 | case DT_PPC64_GLINK: |
4ce794b7 | 14858 | s = htab->glink; |
6348e046 | 14859 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
14860 | /* We stupidly defined DT_PPC64_GLINK to be the start |
14861 | of glink rather than the first entry point, which is | |
14862 | what ld.so needs, and now have a bigger stub to | |
14863 | support automatic multiple TOCs. */ | |
b9e5796b | 14864 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
14865 | break; |
14866 | ||
19397422 AM |
14867 | case DT_PPC64_OPD: |
14868 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14869 | if (s == NULL) |
14870 | continue; | |
14871 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
14872 | break; |
14873 | ||
e8910a83 AM |
14874 | case DT_PPC64_OPT: |
14875 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
14876 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
14877 | break; | |
14878 | ||
19397422 AM |
14879 | case DT_PPC64_OPDSZ: |
14880 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14881 | if (s == NULL) |
14882 | continue; | |
eea6121a | 14883 | dyn.d_un.d_val = s->size; |
19397422 AM |
14884 | break; |
14885 | ||
65f38f15 | 14886 | case DT_PLTGOT: |
33e44f2e | 14887 | s = htab->elf.splt; |
6348e046 | 14888 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
14889 | break; |
14890 | ||
14891 | case DT_JMPREL: | |
33e44f2e | 14892 | s = htab->elf.srelplt; |
6348e046 | 14893 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 14894 | break; |
5bd4f169 | 14895 | |
65f38f15 | 14896 | case DT_PLTRELSZ: |
33e44f2e | 14897 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
14898 | break; |
14899 | ||
14900 | case DT_RELASZ: | |
14901 | /* Don't count procedure linkage table relocs in the | |
14902 | overall reloc count. */ | |
33e44f2e | 14903 | s = htab->elf.srelplt; |
6348e046 AM |
14904 | if (s == NULL) |
14905 | continue; | |
eea6121a | 14906 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
14907 | break; |
14908 | ||
14909 | case DT_RELA: | |
14910 | /* We may not be using the standard ELF linker script. | |
14911 | If .rela.plt is the first .rela section, we adjust | |
14912 | DT_RELA to not include it. */ | |
33e44f2e | 14913 | s = htab->elf.srelplt; |
6348e046 AM |
14914 | if (s == NULL) |
14915 | continue; | |
14916 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
14917 | continue; | |
eea6121a | 14918 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 14919 | break; |
5bd4f169 | 14920 | } |
5bd4f169 | 14921 | |
65f38f15 | 14922 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 14923 | } |
5bd4f169 AM |
14924 | } |
14925 | ||
33e44f2e | 14926 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
14927 | { |
14928 | /* Fill in the first entry in the global offset table. | |
14929 | We use it to hold the link-time TOCbase. */ | |
14930 | bfd_put_64 (output_bfd, | |
60ee0d4a | 14931 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 14932 | htab->elf.sgot->contents); |
5d1634d7 AM |
14933 | |
14934 | /* Set .got entry size. */ | |
33e44f2e | 14935 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
14936 | } |
14937 | ||
33e44f2e | 14938 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
14939 | { |
14940 | /* Set .plt entry size. */ | |
33e44f2e | 14941 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 14942 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
14943 | } |
14944 | ||
84f5d08e AM |
14945 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
14946 | brlt ourselves if emitrelocations. */ | |
14947 | if (htab->brlt != NULL | |
14948 | && htab->brlt->reloc_count != 0 | |
14949 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14950 | htab->brlt, | |
d4730f92 | 14951 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
14952 | elf_section_data (htab->brlt)->relocs, |
14953 | NULL)) | |
14954 | return FALSE; | |
14955 | ||
176a0d42 AM |
14956 | if (htab->glink != NULL |
14957 | && htab->glink->reloc_count != 0 | |
14958 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14959 | htab->glink, | |
d4730f92 | 14960 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
14961 | elf_section_data (htab->glink)->relocs, |
14962 | NULL)) | |
14963 | return FALSE; | |
14964 | ||
58d180e8 AM |
14965 | |
14966 | if (htab->glink_eh_frame != NULL | |
dbaa2011 | 14967 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
58d180e8 AM |
14968 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
14969 | htab->glink_eh_frame, | |
14970 | htab->glink_eh_frame->contents)) | |
14971 | return FALSE; | |
14972 | ||
e717da7e | 14973 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
14974 | since we didn't add them to DYNOBJ. We know dynobj is the first |
14975 | bfd. */ | |
e717da7e AM |
14976 | while ((dynobj = dynobj->link_next) != NULL) |
14977 | { | |
14978 | asection *s; | |
7b53ace3 | 14979 | |
0c8d6e5c | 14980 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
14981 | continue; |
14982 | ||
e717da7e AM |
14983 | s = ppc64_elf_tdata (dynobj)->got; |
14984 | if (s != NULL | |
eea6121a | 14985 | && s->size != 0 |
e717da7e AM |
14986 | && s->output_section != bfd_abs_section_ptr |
14987 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14988 | s->contents, s->output_offset, | |
eea6121a | 14989 | s->size)) |
e717da7e AM |
14990 | return FALSE; |
14991 | s = ppc64_elf_tdata (dynobj)->relgot; | |
14992 | if (s != NULL | |
eea6121a | 14993 | && s->size != 0 |
e717da7e AM |
14994 | && s->output_section != bfd_abs_section_ptr |
14995 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
14996 | s->contents, s->output_offset, | |
eea6121a | 14997 | s->size)) |
e717da7e AM |
14998 | return FALSE; |
14999 | } | |
f6c52c13 | 15000 | |
b34976b6 | 15001 | return TRUE; |
5bd4f169 AM |
15002 | } |
15003 | ||
5bd4f169 | 15004 | #include "elf64-target.h" |
7b8e7dad AM |
15005 | |
15006 | /* FreeBSD support */ | |
15007 | ||
15008 | #undef TARGET_LITTLE_SYM | |
15009 | #undef TARGET_LITTLE_NAME | |
15010 | ||
15011 | #undef TARGET_BIG_SYM | |
15012 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
15013 | #undef TARGET_BIG_NAME | |
15014 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15015 | ||
15016 | #undef ELF_OSABI | |
15017 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15018 | ||
15019 | #undef elf64_bed | |
15020 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15021 | ||
15022 | #include "elf64-target.h" | |
15023 |