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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
219d1afa | 2 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 10 | (at your option) any later version. |
252b5132 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
ae9a127f | 17 | You should have received a copy of the GNU General Public License |
fc0bffd6 | 18 | along with this program; if not, write to the |
3e110533 | 19 | Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
53e09e0a | 20 | Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
cd123cb7 | 22 | |
252b5132 RH |
23 | /* This file is based on a preliminary PowerPC ELF ABI. The |
24 | information may not match the final PowerPC ELF ABI. It includes | |
25 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
26 | information may also not match. */ | |
27 | ||
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
252b5132 | 30 | #include "bfd.h" |
252b5132 RH |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
34 | #include "elf/ppc.h" | |
7619e7c7 | 35 | #include "elf32-ppc.h" |
9d8504b1 | 36 | #include "elf-vxworks.h" |
6177242a | 37 | #include "dwarf2.h" |
08dc996f | 38 | #include "opcode/ppc.h" |
252b5132 | 39 | |
b9c361e0 JL |
40 | typedef enum split16_format_type |
41 | { | |
42 | split16a_type = 0, | |
43 | split16d_type | |
44 | } | |
45 | split16_format_type; | |
46 | ||
f0fe0e16 | 47 | /* RELA relocations are used here. */ |
252b5132 | 48 | |
252b5132 | 49 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 51 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 53 | |
70bccea4 AM |
54 | /* Branch prediction bit for branch taken relocs. */ |
55 | #define BRANCH_PREDICT_BIT 0x200000 | |
56 | /* Mask to set RA in memory instructions. */ | |
57 | #define RA_REGISTER_MASK 0x001f0000 | |
58 | /* Value to shift register by to insert RA. */ | |
59 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
60 | |
61 | /* The name of the dynamic interpreter. This is put in the .interp | |
62 | section. */ | |
252b5132 RH |
63 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
64 | ||
d7128ce4 | 65 | /* For old-style PLT. */ |
252b5132 RH |
66 | /* The number of single-slot PLT entries (the rest use two slots). */ |
67 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
68 | ||
d7128ce4 | 69 | /* For new-style .glink and .plt. */ |
a6aa5195 | 70 | #define GLINK_PLTRESOLVE 16*4 |
9e390558 | 71 | #define GLINK_ENTRY_SIZE(htab, h) \ |
407aa07c | 72 | ((4*4 \ |
9e390558 AM |
73 | + (h != NULL \ |
74 | && h == htab->tls_get_addr \ | |
75 | && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \ | |
76 | + (1u << htab->params->plt_stub_align) - 1) \ | |
77 | & -(1u << htab->params->plt_stub_align)) | |
d7128ce4 | 78 | |
9d8504b1 PB |
79 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
80 | ||
81 | /* The standard VxWorks PLT entry. */ | |
82 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
83 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
84 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
85 | { | |
07d6d2b8 AM |
86 | 0x3d800000, /* lis r12,0 */ |
87 | 0x818c0000, /* lwz r12,0(r12) */ | |
88 | 0x7d8903a6, /* mtctr r12 */ | |
89 | 0x4e800420, /* bctr */ | |
90 | 0x39600000, /* li r11,0 */ | |
91 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
92 | 0x60000000, /* nop */ | |
93 | 0x60000000, /* nop */ | |
9d8504b1 PB |
94 | }; |
95 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
96 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
97 | { | |
98 | 0x3d9e0000, /* addis r12,r30,0 */ | |
99 | 0x818c0000, /* lwz r12,0(r12) */ | |
100 | 0x7d8903a6, /* mtctr r12 */ | |
101 | 0x4e800420, /* bctr */ | |
102 | 0x39600000, /* li r11,0 */ | |
103 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
104 | 0x60000000, /* nop */ | |
105 | 0x60000000, /* nop */ | |
106 | }; | |
107 | ||
108 | /* The initial VxWorks PLT entry. */ | |
109 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
110 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
111 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
112 | { | |
07d6d2b8 AM |
113 | 0x3d800000, /* lis r12,0 */ |
114 | 0x398c0000, /* addi r12,r12,0 */ | |
115 | 0x800c0008, /* lwz r0,8(r12) */ | |
116 | 0x7c0903a6, /* mtctr r0 */ | |
117 | 0x818c0004, /* lwz r12,4(r12) */ | |
118 | 0x4e800420, /* bctr */ | |
119 | 0x60000000, /* nop */ | |
120 | 0x60000000, /* nop */ | |
9d8504b1 PB |
121 | }; |
122 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
123 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
124 | { | |
125 | 0x819e0008, /* lwz r12,8(r30) */ | |
07d6d2b8 | 126 | 0x7d8903a6, /* mtctr r12 */ |
9d8504b1 | 127 | 0x819e0004, /* lwz r12,4(r30) */ |
07d6d2b8 AM |
128 | 0x4e800420, /* bctr */ |
129 | 0x60000000, /* nop */ | |
130 | 0x60000000, /* nop */ | |
131 | 0x60000000, /* nop */ | |
132 | 0x60000000, /* nop */ | |
9d8504b1 PB |
133 | }; |
134 | ||
135 | /* For executables, we have some additional relocations in | |
136 | .rela.plt.unloaded, for the kernel loader. */ | |
137 | ||
138 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
139 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
140 | /* The number of relocations in the PLTResolve slot. */ | |
141 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
de194d85 | 142 | /* The number of relocations in the PLTResolve slot when creating |
9d8504b1 PB |
143 | a shared library. */ |
144 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
145 | ||
d7128ce4 | 146 | /* Some instructions. */ |
d7128ce4 | 147 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
148 | #define ADDIS_11_30 0x3d7e0000 |
149 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 150 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 151 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 152 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 153 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 154 | #define B 0x48000000 |
da3a2088 | 155 | #define BA 0x48000002 |
a6aa5195 | 156 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 157 | #define BCTR 0x4e800420 |
a7f2871e AM |
158 | #define BEQLR 0x4d820020 |
159 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
160 | #define LIS_11 0x3d600000 |
161 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
162 | #define LWZU_0_12 0x840c0000 |
163 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 164 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
165 | #define LWZ_11_11 0x816b0000 |
166 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 167 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 168 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
169 | #define MR_0_3 0x7c601b78 |
170 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
171 | #define MFLR_0 0x7c0802a6 |
172 | #define MFLR_12 0x7d8802a6 | |
173 | #define MTCTR_0 0x7c0903a6 | |
174 | #define MTCTR_11 0x7d6903a6 | |
175 | #define MTLR_0 0x7c0803a6 | |
176 | #define NOP 0x60000000 | |
177 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
178 | |
179 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
180 | #define TP_OFFSET 0x7000 | |
181 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
182 | |
183 | /* The value of a defined global symbol. */ | |
184 | #define SYM_VAL(SYM) \ | |
185 | ((SYM)->root.u.def.section->output_section->vma \ | |
186 | + (SYM)->root.u.def.section->output_offset \ | |
187 | + (SYM)->root.u.def.value) | |
7fce784e | 188 | \f |
e47cd125 | 189 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 190 | |
8da6118f | 191 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
192 | /* This reloc does nothing. */ |
193 | HOWTO (R_PPC_NONE, /* type */ | |
194 | 0, /* rightshift */ | |
6346d5ca AM |
195 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
196 | 0, /* bitsize */ | |
b34976b6 | 197 | FALSE, /* pc_relative */ |
252b5132 | 198 | 0, /* bitpos */ |
86c95733 | 199 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
200 | bfd_elf_generic_reloc, /* special_function */ |
201 | "R_PPC_NONE", /* name */ | |
b34976b6 | 202 | FALSE, /* partial_inplace */ |
252b5132 RH |
203 | 0, /* src_mask */ |
204 | 0, /* dst_mask */ | |
b34976b6 | 205 | FALSE), /* pcrel_offset */ |
252b5132 RH |
206 | |
207 | /* A standard 32 bit relocation. */ | |
208 | HOWTO (R_PPC_ADDR32, /* type */ | |
209 | 0, /* rightshift */ | |
210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
211 | 32, /* bitsize */ | |
b34976b6 | 212 | FALSE, /* pc_relative */ |
252b5132 | 213 | 0, /* bitpos */ |
86c95733 | 214 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
215 | bfd_elf_generic_reloc, /* special_function */ |
216 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 217 | FALSE, /* partial_inplace */ |
252b5132 RH |
218 | 0, /* src_mask */ |
219 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 220 | FALSE), /* pcrel_offset */ |
252b5132 RH |
221 | |
222 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
223 | FIXME: we don't check that, we just clear them. */ | |
224 | HOWTO (R_PPC_ADDR24, /* type */ | |
225 | 0, /* rightshift */ | |
226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
227 | 26, /* bitsize */ | |
b34976b6 | 228 | FALSE, /* pc_relative */ |
252b5132 | 229 | 0, /* bitpos */ |
86c95733 | 230 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
231 | bfd_elf_generic_reloc, /* special_function */ |
232 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 233 | FALSE, /* partial_inplace */ |
252b5132 RH |
234 | 0, /* src_mask */ |
235 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 236 | FALSE), /* pcrel_offset */ |
252b5132 RH |
237 | |
238 | /* A standard 16 bit relocation. */ | |
239 | HOWTO (R_PPC_ADDR16, /* type */ | |
240 | 0, /* rightshift */ | |
241 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 16, /* bitsize */ | |
b34976b6 | 243 | FALSE, /* pc_relative */ |
252b5132 RH |
244 | 0, /* bitpos */ |
245 | complain_overflow_bitfield, /* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 248 | FALSE, /* partial_inplace */ |
252b5132 RH |
249 | 0, /* src_mask */ |
250 | 0xffff, /* dst_mask */ | |
b34976b6 | 251 | FALSE), /* pcrel_offset */ |
252b5132 RH |
252 | |
253 | /* A 16 bit relocation without overflow. */ | |
254 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
255 | 0, /* rightshift */ | |
256 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
257 | 16, /* bitsize */ | |
b34976b6 | 258 | FALSE, /* pc_relative */ |
252b5132 RH |
259 | 0, /* bitpos */ |
260 | complain_overflow_dont,/* complain_on_overflow */ | |
261 | bfd_elf_generic_reloc, /* special_function */ | |
262 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 263 | FALSE, /* partial_inplace */ |
252b5132 RH |
264 | 0, /* src_mask */ |
265 | 0xffff, /* dst_mask */ | |
b34976b6 | 266 | FALSE), /* pcrel_offset */ |
252b5132 RH |
267 | |
268 | /* The high order 16 bits of an address. */ | |
269 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
270 | 16, /* rightshift */ | |
271 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
272 | 16, /* bitsize */ | |
b34976b6 | 273 | FALSE, /* pc_relative */ |
252b5132 RH |
274 | 0, /* bitpos */ |
275 | complain_overflow_dont, /* complain_on_overflow */ | |
276 | bfd_elf_generic_reloc, /* special_function */ | |
277 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 278 | FALSE, /* partial_inplace */ |
252b5132 RH |
279 | 0, /* src_mask */ |
280 | 0xffff, /* dst_mask */ | |
b34976b6 | 281 | FALSE), /* pcrel_offset */ |
252b5132 RH |
282 | |
283 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 284 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
285 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
286 | 16, /* rightshift */ | |
287 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 16, /* bitsize */ | |
b34976b6 | 289 | FALSE, /* pc_relative */ |
252b5132 RH |
290 | 0, /* bitpos */ |
291 | complain_overflow_dont, /* complain_on_overflow */ | |
292 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
293 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 294 | FALSE, /* partial_inplace */ |
252b5132 RH |
295 | 0, /* src_mask */ |
296 | 0xffff, /* dst_mask */ | |
b34976b6 | 297 | FALSE), /* pcrel_offset */ |
252b5132 RH |
298 | |
299 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
300 | FIXME: we don't check that, we just clear them. */ | |
301 | HOWTO (R_PPC_ADDR14, /* type */ | |
302 | 0, /* rightshift */ | |
303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
304 | 16, /* bitsize */ | |
b34976b6 | 305 | FALSE, /* pc_relative */ |
252b5132 | 306 | 0, /* bitpos */ |
86c95733 | 307 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
308 | bfd_elf_generic_reloc, /* special_function */ |
309 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 310 | FALSE, /* partial_inplace */ |
252b5132 RH |
311 | 0, /* src_mask */ |
312 | 0xfffc, /* dst_mask */ | |
b34976b6 | 313 | FALSE), /* pcrel_offset */ |
252b5132 RH |
314 | |
315 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
316 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 317 | bits must be zero. */ |
252b5132 RH |
318 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 16, /* bitsize */ | |
b34976b6 | 322 | FALSE, /* pc_relative */ |
252b5132 | 323 | 0, /* bitpos */ |
86c95733 | 324 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
325 | bfd_elf_generic_reloc, /* special_function */ |
326 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 327 | FALSE, /* partial_inplace */ |
252b5132 RH |
328 | 0, /* src_mask */ |
329 | 0xfffc, /* dst_mask */ | |
b34976b6 | 330 | FALSE), /* pcrel_offset */ |
252b5132 RH |
331 | |
332 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
333 | indicate that the branch is not expected to be taken. The lower | |
334 | two bits must be zero. */ | |
335 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
336 | 0, /* rightshift */ | |
337 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
252b5132 | 340 | 0, /* bitpos */ |
86c95733 | 341 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
342 | bfd_elf_generic_reloc, /* special_function */ |
343 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
252b5132 RH |
345 | 0, /* src_mask */ |
346 | 0xfffc, /* dst_mask */ | |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
252b5132 | 348 | |
8da6118f | 349 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
350 | HOWTO (R_PPC_REL24, /* type */ |
351 | 0, /* rightshift */ | |
352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 26, /* bitsize */ | |
b34976b6 | 354 | TRUE, /* pc_relative */ |
252b5132 RH |
355 | 0, /* bitpos */ |
356 | complain_overflow_signed, /* complain_on_overflow */ | |
357 | bfd_elf_generic_reloc, /* special_function */ | |
358 | "R_PPC_REL24", /* name */ | |
b34976b6 | 359 | FALSE, /* partial_inplace */ |
252b5132 RH |
360 | 0, /* src_mask */ |
361 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 362 | TRUE), /* pcrel_offset */ |
252b5132 | 363 | |
8da6118f | 364 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
365 | HOWTO (R_PPC_REL14, /* type */ |
366 | 0, /* rightshift */ | |
367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
368 | 16, /* bitsize */ | |
b34976b6 | 369 | TRUE, /* pc_relative */ |
252b5132 RH |
370 | 0, /* bitpos */ |
371 | complain_overflow_signed, /* complain_on_overflow */ | |
372 | bfd_elf_generic_reloc, /* special_function */ | |
373 | "R_PPC_REL14", /* name */ | |
b34976b6 | 374 | FALSE, /* partial_inplace */ |
252b5132 RH |
375 | 0, /* src_mask */ |
376 | 0xfffc, /* dst_mask */ | |
b34976b6 | 377 | TRUE), /* pcrel_offset */ |
252b5132 | 378 | |
8da6118f | 379 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
380 | the branch is expected to be taken. The lower two bits must be |
381 | zero. */ | |
382 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
383 | 0, /* rightshift */ | |
384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
385 | 16, /* bitsize */ | |
b34976b6 | 386 | TRUE, /* pc_relative */ |
252b5132 RH |
387 | 0, /* bitpos */ |
388 | complain_overflow_signed, /* complain_on_overflow */ | |
389 | bfd_elf_generic_reloc, /* special_function */ | |
390 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 391 | FALSE, /* partial_inplace */ |
252b5132 RH |
392 | 0, /* src_mask */ |
393 | 0xfffc, /* dst_mask */ | |
b34976b6 | 394 | TRUE), /* pcrel_offset */ |
252b5132 | 395 | |
8da6118f | 396 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
397 | the branch is not expected to be taken. The lower two bits must |
398 | be zero. */ | |
399 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
400 | 0, /* rightshift */ | |
401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
402 | 16, /* bitsize */ | |
b34976b6 | 403 | TRUE, /* pc_relative */ |
252b5132 RH |
404 | 0, /* bitpos */ |
405 | complain_overflow_signed, /* complain_on_overflow */ | |
406 | bfd_elf_generic_reloc, /* special_function */ | |
407 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 408 | FALSE, /* partial_inplace */ |
252b5132 RH |
409 | 0, /* src_mask */ |
410 | 0xfffc, /* dst_mask */ | |
b34976b6 | 411 | TRUE), /* pcrel_offset */ |
252b5132 RH |
412 | |
413 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
414 | symbol. */ | |
415 | HOWTO (R_PPC_GOT16, /* type */ | |
416 | 0, /* rightshift */ | |
417 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
418 | 16, /* bitsize */ | |
b34976b6 | 419 | FALSE, /* pc_relative */ |
252b5132 RH |
420 | 0, /* bitpos */ |
421 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 422 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 423 | "R_PPC_GOT16", /* name */ |
b34976b6 | 424 | FALSE, /* partial_inplace */ |
252b5132 RH |
425 | 0, /* src_mask */ |
426 | 0xffff, /* dst_mask */ | |
b34976b6 | 427 | FALSE), /* pcrel_offset */ |
252b5132 RH |
428 | |
429 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
430 | the symbol. */ | |
431 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 16, /* bitsize */ | |
b34976b6 | 435 | FALSE, /* pc_relative */ |
252b5132 RH |
436 | 0, /* bitpos */ |
437 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 438 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 439 | "R_PPC_GOT16_LO", /* name */ |
b34976b6 | 440 | FALSE, /* partial_inplace */ |
252b5132 RH |
441 | 0, /* src_mask */ |
442 | 0xffff, /* dst_mask */ | |
b34976b6 | 443 | FALSE), /* pcrel_offset */ |
252b5132 RH |
444 | |
445 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
446 | the symbol. */ | |
447 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
448 | 16, /* rightshift */ | |
449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
450 | 16, /* bitsize */ | |
b34976b6 | 451 | FALSE, /* pc_relative */ |
252b5132 | 452 | 0, /* bitpos */ |
86c95733 | 453 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 454 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 455 | "R_PPC_GOT16_HI", /* name */ |
b34976b6 | 456 | FALSE, /* partial_inplace */ |
252b5132 RH |
457 | 0, /* src_mask */ |
458 | 0xffff, /* dst_mask */ | |
b34976b6 | 459 | FALSE), /* pcrel_offset */ |
252b5132 RH |
460 | |
461 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
462 | the symbol. */ | |
463 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
464 | 16, /* rightshift */ | |
465 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
466 | 16, /* bitsize */ | |
b34976b6 | 467 | FALSE, /* pc_relative */ |
252b5132 | 468 | 0, /* bitpos */ |
86c95733 | 469 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 470 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 471 | "R_PPC_GOT16_HA", /* name */ |
b34976b6 | 472 | FALSE, /* partial_inplace */ |
252b5132 RH |
473 | 0, /* src_mask */ |
474 | 0xffff, /* dst_mask */ | |
b34976b6 | 475 | FALSE), /* pcrel_offset */ |
252b5132 RH |
476 | |
477 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
478 | entry for the symbol. */ | |
479 | HOWTO (R_PPC_PLTREL24, /* type */ | |
480 | 0, /* rightshift */ | |
481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
482 | 26, /* bitsize */ | |
b34976b6 | 483 | TRUE, /* pc_relative */ |
252b5132 | 484 | 0, /* bitpos */ |
3ce51288 AM |
485 | complain_overflow_signed, /* complain_on_overflow */ |
486 | ppc_elf_unhandled_reloc, /* special_function */ | |
252b5132 | 487 | "R_PPC_PLTREL24", /* name */ |
b34976b6 | 488 | FALSE, /* partial_inplace */ |
252b5132 RH |
489 | 0, /* src_mask */ |
490 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 491 | TRUE), /* pcrel_offset */ |
252b5132 RH |
492 | |
493 | /* This is used only by the dynamic linker. The symbol should exist | |
494 | both in the object being run and in some shared library. The | |
495 | dynamic linker copies the data addressed by the symbol from the | |
496 | shared library into the object, because the object being | |
497 | run has to have the data at some particular address. */ | |
498 | HOWTO (R_PPC_COPY, /* type */ | |
499 | 0, /* rightshift */ | |
500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
501 | 32, /* bitsize */ | |
b34976b6 | 502 | FALSE, /* pc_relative */ |
252b5132 | 503 | 0, /* bitpos */ |
86c95733 | 504 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 505 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 506 | "R_PPC_COPY", /* name */ |
b34976b6 | 507 | FALSE, /* partial_inplace */ |
252b5132 RH |
508 | 0, /* src_mask */ |
509 | 0, /* dst_mask */ | |
b34976b6 | 510 | FALSE), /* pcrel_offset */ |
252b5132 RH |
511 | |
512 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
513 | entries. */ | |
514 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 32, /* bitsize */ | |
b34976b6 | 518 | FALSE, /* pc_relative */ |
252b5132 | 519 | 0, /* bitpos */ |
86c95733 | 520 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 521 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 522 | "R_PPC_GLOB_DAT", /* name */ |
b34976b6 | 523 | FALSE, /* partial_inplace */ |
252b5132 RH |
524 | 0, /* src_mask */ |
525 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 526 | FALSE), /* pcrel_offset */ |
252b5132 RH |
527 | |
528 | /* Marks a procedure linkage table entry for a symbol. */ | |
529 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 32, /* bitsize */ | |
b34976b6 | 533 | FALSE, /* pc_relative */ |
252b5132 | 534 | 0, /* bitpos */ |
86c95733 | 535 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 536 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 537 | "R_PPC_JMP_SLOT", /* name */ |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
252b5132 RH |
539 | 0, /* src_mask */ |
540 | 0, /* dst_mask */ | |
b34976b6 | 541 | FALSE), /* pcrel_offset */ |
252b5132 RH |
542 | |
543 | /* Used only by the dynamic linker. When the object is run, this | |
544 | longword is set to the load address of the object, plus the | |
545 | addend. */ | |
546 | HOWTO (R_PPC_RELATIVE, /* type */ | |
547 | 0, /* rightshift */ | |
548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 32, /* bitsize */ | |
b34976b6 | 550 | FALSE, /* pc_relative */ |
252b5132 | 551 | 0, /* bitpos */ |
86c95733 | 552 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
553 | bfd_elf_generic_reloc, /* special_function */ |
554 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 555 | FALSE, /* partial_inplace */ |
252b5132 RH |
556 | 0, /* src_mask */ |
557 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 558 | FALSE), /* pcrel_offset */ |
252b5132 RH |
559 | |
560 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
561 | object rather than the final value. Normally used for | |
562 | _GLOBAL_OFFSET_TABLE_. */ | |
563 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 26, /* bitsize */ | |
b34976b6 | 567 | TRUE, /* pc_relative */ |
252b5132 RH |
568 | 0, /* bitpos */ |
569 | complain_overflow_signed, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
571 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
252b5132 RH |
573 | 0, /* src_mask */ |
574 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 575 | TRUE), /* pcrel_offset */ |
252b5132 RH |
576 | |
577 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
578 | HOWTO (R_PPC_UADDR32, /* type */ | |
579 | 0, /* rightshift */ | |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 32, /* bitsize */ | |
b34976b6 | 582 | FALSE, /* pc_relative */ |
252b5132 | 583 | 0, /* bitpos */ |
86c95733 | 584 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
585 | bfd_elf_generic_reloc, /* special_function */ |
586 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 587 | FALSE, /* partial_inplace */ |
252b5132 RH |
588 | 0, /* src_mask */ |
589 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 590 | FALSE), /* pcrel_offset */ |
252b5132 RH |
591 | |
592 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
593 | HOWTO (R_PPC_UADDR16, /* type */ | |
594 | 0, /* rightshift */ | |
595 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 16, /* bitsize */ | |
b34976b6 | 597 | FALSE, /* pc_relative */ |
252b5132 RH |
598 | 0, /* bitpos */ |
599 | complain_overflow_bitfield, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* special_function */ | |
601 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 602 | FALSE, /* partial_inplace */ |
252b5132 RH |
603 | 0, /* src_mask */ |
604 | 0xffff, /* dst_mask */ | |
b34976b6 | 605 | FALSE), /* pcrel_offset */ |
252b5132 RH |
606 | |
607 | /* 32-bit PC relative */ | |
608 | HOWTO (R_PPC_REL32, /* type */ | |
609 | 0, /* rightshift */ | |
610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 32, /* bitsize */ | |
b34976b6 | 612 | TRUE, /* pc_relative */ |
252b5132 | 613 | 0, /* bitpos */ |
86c95733 | 614 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
615 | bfd_elf_generic_reloc, /* special_function */ |
616 | "R_PPC_REL32", /* name */ | |
b34976b6 | 617 | FALSE, /* partial_inplace */ |
252b5132 RH |
618 | 0, /* src_mask */ |
619 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 620 | TRUE), /* pcrel_offset */ |
252b5132 RH |
621 | |
622 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 623 | FIXME: not supported. */ |
252b5132 RH |
624 | HOWTO (R_PPC_PLT32, /* type */ |
625 | 0, /* rightshift */ | |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 32, /* bitsize */ | |
b34976b6 | 628 | FALSE, /* pc_relative */ |
252b5132 | 629 | 0, /* bitpos */ |
86c95733 | 630 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 631 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 632 | "R_PPC_PLT32", /* name */ |
b34976b6 | 633 | FALSE, /* partial_inplace */ |
252b5132 RH |
634 | 0, /* src_mask */ |
635 | 0, /* dst_mask */ | |
b34976b6 | 636 | FALSE), /* pcrel_offset */ |
252b5132 RH |
637 | |
638 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 639 | FIXME: not supported. */ |
252b5132 RH |
640 | HOWTO (R_PPC_PLTREL32, /* type */ |
641 | 0, /* rightshift */ | |
642 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
643 | 32, /* bitsize */ | |
b34976b6 | 644 | TRUE, /* pc_relative */ |
252b5132 | 645 | 0, /* bitpos */ |
86c95733 | 646 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 647 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 648 | "R_PPC_PLTREL32", /* name */ |
b34976b6 | 649 | FALSE, /* partial_inplace */ |
252b5132 RH |
650 | 0, /* src_mask */ |
651 | 0, /* dst_mask */ | |
b34976b6 | 652 | TRUE), /* pcrel_offset */ |
252b5132 RH |
653 | |
654 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
655 | the symbol. */ | |
656 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
657 | 0, /* rightshift */ | |
658 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
659 | 16, /* bitsize */ | |
b34976b6 | 660 | FALSE, /* pc_relative */ |
252b5132 RH |
661 | 0, /* bitpos */ |
662 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 663 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 664 | "R_PPC_PLT16_LO", /* name */ |
b34976b6 | 665 | FALSE, /* partial_inplace */ |
252b5132 RH |
666 | 0, /* src_mask */ |
667 | 0xffff, /* dst_mask */ | |
b34976b6 | 668 | FALSE), /* pcrel_offset */ |
252b5132 RH |
669 | |
670 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
671 | the symbol. */ | |
672 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
673 | 16, /* rightshift */ | |
674 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
675 | 16, /* bitsize */ | |
b34976b6 | 676 | FALSE, /* pc_relative */ |
252b5132 | 677 | 0, /* bitpos */ |
86c95733 | 678 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 679 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 680 | "R_PPC_PLT16_HI", /* name */ |
b34976b6 | 681 | FALSE, /* partial_inplace */ |
252b5132 RH |
682 | 0, /* src_mask */ |
683 | 0xffff, /* dst_mask */ | |
b34976b6 | 684 | FALSE), /* pcrel_offset */ |
252b5132 RH |
685 | |
686 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
687 | the symbol. */ | |
688 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
689 | 16, /* rightshift */ | |
690 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
691 | 16, /* bitsize */ | |
b34976b6 | 692 | FALSE, /* pc_relative */ |
252b5132 | 693 | 0, /* bitpos */ |
86c95733 | 694 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 695 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 696 | "R_PPC_PLT16_HA", /* name */ |
b34976b6 | 697 | FALSE, /* partial_inplace */ |
252b5132 RH |
698 | 0, /* src_mask */ |
699 | 0xffff, /* dst_mask */ | |
b34976b6 | 700 | FALSE), /* pcrel_offset */ |
252b5132 RH |
701 | |
702 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
703 | small data items. */ | |
704 | HOWTO (R_PPC_SDAREL16, /* type */ | |
705 | 0, /* rightshift */ | |
706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
707 | 16, /* bitsize */ | |
b34976b6 | 708 | FALSE, /* pc_relative */ |
252b5132 RH |
709 | 0, /* bitpos */ |
710 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 711 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 712 | "R_PPC_SDAREL16", /* name */ |
b34976b6 | 713 | FALSE, /* partial_inplace */ |
252b5132 RH |
714 | 0, /* src_mask */ |
715 | 0xffff, /* dst_mask */ | |
b34976b6 | 716 | FALSE), /* pcrel_offset */ |
252b5132 | 717 | |
c061c2d8 | 718 | /* 16-bit section relative relocation. */ |
252b5132 RH |
719 | HOWTO (R_PPC_SECTOFF, /* type */ |
720 | 0, /* rightshift */ | |
c061c2d8 AM |
721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
722 | 16, /* bitsize */ | |
b34976b6 | 723 | FALSE, /* pc_relative */ |
252b5132 | 724 | 0, /* bitpos */ |
86c95733 | 725 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 726 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 727 | "R_PPC_SECTOFF", /* name */ |
b34976b6 | 728 | FALSE, /* partial_inplace */ |
252b5132 | 729 | 0, /* src_mask */ |
c061c2d8 | 730 | 0xffff, /* dst_mask */ |
b34976b6 | 731 | FALSE), /* pcrel_offset */ |
252b5132 | 732 | |
c3668558 | 733 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
734 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
735 | 0, /* rightshift */ | |
736 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 16, /* bitsize */ | |
b34976b6 | 738 | FALSE, /* pc_relative */ |
252b5132 RH |
739 | 0, /* bitpos */ |
740 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 741 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 742 | "R_PPC_SECTOFF_LO", /* name */ |
b34976b6 | 743 | FALSE, /* partial_inplace */ |
252b5132 RH |
744 | 0, /* src_mask */ |
745 | 0xffff, /* dst_mask */ | |
b34976b6 | 746 | FALSE), /* pcrel_offset */ |
252b5132 | 747 | |
c3668558 | 748 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
749 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
750 | 16, /* rightshift */ | |
751 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 16, /* bitsize */ | |
b34976b6 | 753 | FALSE, /* pc_relative */ |
252b5132 | 754 | 0, /* bitpos */ |
86c95733 | 755 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 756 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 757 | "R_PPC_SECTOFF_HI", /* name */ |
b34976b6 | 758 | FALSE, /* partial_inplace */ |
252b5132 RH |
759 | 0, /* src_mask */ |
760 | 0xffff, /* dst_mask */ | |
b34976b6 | 761 | FALSE), /* pcrel_offset */ |
252b5132 | 762 | |
c3668558 | 763 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
764 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
765 | 16, /* rightshift */ | |
766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
767 | 16, /* bitsize */ | |
b34976b6 | 768 | FALSE, /* pc_relative */ |
252b5132 | 769 | 0, /* bitpos */ |
86c95733 | 770 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 771 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 772 | "R_PPC_SECTOFF_HA", /* name */ |
b34976b6 | 773 | FALSE, /* partial_inplace */ |
252b5132 RH |
774 | 0, /* src_mask */ |
775 | 0xffff, /* dst_mask */ | |
b34976b6 | 776 | FALSE), /* pcrel_offset */ |
252b5132 | 777 | |
727fc41e | 778 | /* Marker relocs for TLS. */ |
7619e7c7 | 779 | HOWTO (R_PPC_TLS, |
252b5132 RH |
780 | 0, /* rightshift */ |
781 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
782 | 32, /* bitsize */ | |
b34976b6 | 783 | FALSE, /* pc_relative */ |
252b5132 | 784 | 0, /* bitpos */ |
7619e7c7 | 785 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 786 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
787 | "R_PPC_TLS", /* name */ |
788 | FALSE, /* partial_inplace */ | |
789 | 0, /* src_mask */ | |
790 | 0, /* dst_mask */ | |
791 | FALSE), /* pcrel_offset */ | |
792 | ||
727fc41e AM |
793 | HOWTO (R_PPC_TLSGD, |
794 | 0, /* rightshift */ | |
795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 32, /* bitsize */ | |
797 | FALSE, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_dont, /* complain_on_overflow */ | |
800 | bfd_elf_generic_reloc, /* special_function */ | |
801 | "R_PPC_TLSGD", /* name */ | |
802 | FALSE, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0, /* dst_mask */ | |
805 | FALSE), /* pcrel_offset */ | |
806 | ||
807 | HOWTO (R_PPC_TLSLD, | |
808 | 0, /* rightshift */ | |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 32, /* bitsize */ | |
811 | FALSE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | "R_PPC_TLSLD", /* name */ | |
816 | FALSE, /* partial_inplace */ | |
817 | 0, /* src_mask */ | |
818 | 0, /* dst_mask */ | |
819 | FALSE), /* pcrel_offset */ | |
820 | ||
23cedd1d AM |
821 | /* Marker relocs on inline plt call instructions. */ |
822 | HOWTO (R_PPC_PLTSEQ, | |
823 | 0, /* rightshift */ | |
824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 32, /* bitsize */ | |
826 | FALSE, /* pc_relative */ | |
827 | 0, /* bitpos */ | |
828 | complain_overflow_dont, /* complain_on_overflow */ | |
829 | bfd_elf_generic_reloc, /* special_function */ | |
830 | "R_PPC_PLTSEQ", /* name */ | |
831 | FALSE, /* partial_inplace */ | |
832 | 0, /* src_mask */ | |
833 | 0, /* dst_mask */ | |
834 | FALSE), /* pcrel_offset */ | |
835 | ||
836 | HOWTO (R_PPC_PLTCALL, | |
837 | 0, /* rightshift */ | |
838 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
839 | 32, /* bitsize */ | |
840 | FALSE, /* pc_relative */ | |
841 | 0, /* bitpos */ | |
842 | complain_overflow_dont, /* complain_on_overflow */ | |
843 | bfd_elf_generic_reloc, /* special_function */ | |
844 | "R_PPC_PLTCALL", /* name */ | |
845 | FALSE, /* partial_inplace */ | |
846 | 0, /* src_mask */ | |
847 | 0, /* dst_mask */ | |
848 | FALSE), /* pcrel_offset */ | |
849 | ||
7619e7c7 AM |
850 | /* Computes the load module index of the load module that contains the |
851 | definition of its TLS sym. */ | |
852 | HOWTO (R_PPC_DTPMOD32, | |
853 | 0, /* rightshift */ | |
854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
855 | 32, /* bitsize */ | |
856 | FALSE, /* pc_relative */ | |
857 | 0, /* bitpos */ | |
858 | complain_overflow_dont, /* complain_on_overflow */ | |
859 | ppc_elf_unhandled_reloc, /* special_function */ | |
860 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 861 | FALSE, /* partial_inplace */ |
252b5132 RH |
862 | 0, /* src_mask */ |
863 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 864 | FALSE), /* pcrel_offset */ |
252b5132 | 865 | |
7619e7c7 AM |
866 | /* Computes a dtv-relative displacement, the difference between the value |
867 | of sym+add and the base address of the thread-local storage block that | |
868 | contains the definition of sym, minus 0x8000. */ | |
869 | HOWTO (R_PPC_DTPREL32, | |
870 | 0, /* rightshift */ | |
871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
872 | 32, /* bitsize */ | |
873 | FALSE, /* pc_relative */ | |
874 | 0, /* bitpos */ | |
875 | complain_overflow_dont, /* complain_on_overflow */ | |
876 | ppc_elf_unhandled_reloc, /* special_function */ | |
877 | "R_PPC_DTPREL32", /* name */ | |
878 | FALSE, /* partial_inplace */ | |
879 | 0, /* src_mask */ | |
880 | 0xffffffff, /* dst_mask */ | |
881 | FALSE), /* pcrel_offset */ | |
882 | ||
883 | /* A 16 bit dtprel reloc. */ | |
884 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
885 | 0, /* rightshift */ |
886 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
887 | 16, /* bitsize */ | |
b34976b6 | 888 | FALSE, /* pc_relative */ |
252b5132 | 889 | 0, /* bitpos */ |
7619e7c7 AM |
890 | complain_overflow_signed, /* complain_on_overflow */ |
891 | ppc_elf_unhandled_reloc, /* special_function */ | |
892 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 893 | FALSE, /* partial_inplace */ |
252b5132 RH |
894 | 0, /* src_mask */ |
895 | 0xffff, /* dst_mask */ | |
b34976b6 | 896 | FALSE), /* pcrel_offset */ |
252b5132 | 897 | |
7619e7c7 AM |
898 | /* Like DTPREL16, but no overflow. */ |
899 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
900 | 0, /* rightshift */ |
901 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
902 | 16, /* bitsize */ | |
b34976b6 | 903 | FALSE, /* pc_relative */ |
252b5132 | 904 | 0, /* bitpos */ |
7619e7c7 AM |
905 | complain_overflow_dont, /* complain_on_overflow */ |
906 | ppc_elf_unhandled_reloc, /* special_function */ | |
907 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 908 | FALSE, /* partial_inplace */ |
252b5132 RH |
909 | 0, /* src_mask */ |
910 | 0xffff, /* dst_mask */ | |
b34976b6 | 911 | FALSE), /* pcrel_offset */ |
252b5132 | 912 | |
7619e7c7 AM |
913 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
914 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
915 | 16, /* rightshift */ |
916 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 16, /* bitsize */ | |
b34976b6 | 918 | FALSE, /* pc_relative */ |
252b5132 RH |
919 | 0, /* bitpos */ |
920 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
921 | ppc_elf_unhandled_reloc, /* special_function */ |
922 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 923 | FALSE, /* partial_inplace */ |
252b5132 RH |
924 | 0, /* src_mask */ |
925 | 0xffff, /* dst_mask */ | |
b34976b6 | 926 | FALSE), /* pcrel_offset */ |
252b5132 | 927 | |
7619e7c7 AM |
928 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
929 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
930 | 16, /* rightshift */ |
931 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 16, /* bitsize */ | |
b34976b6 | 933 | FALSE, /* pc_relative */ |
252b5132 RH |
934 | 0, /* bitpos */ |
935 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
936 | ppc_elf_unhandled_reloc, /* special_function */ |
937 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 938 | FALSE, /* partial_inplace */ |
252b5132 RH |
939 | 0, /* src_mask */ |
940 | 0xffff, /* dst_mask */ | |
b34976b6 | 941 | FALSE), /* pcrel_offset */ |
252b5132 | 942 | |
7619e7c7 AM |
943 | /* Computes a tp-relative displacement, the difference between the value of |
944 | sym+add and the value of the thread pointer (r13). */ | |
945 | HOWTO (R_PPC_TPREL32, | |
946 | 0, /* rightshift */ | |
947 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
948 | 32, /* bitsize */ | |
949 | FALSE, /* pc_relative */ | |
950 | 0, /* bitpos */ | |
951 | complain_overflow_dont, /* complain_on_overflow */ | |
952 | ppc_elf_unhandled_reloc, /* special_function */ | |
953 | "R_PPC_TPREL32", /* name */ | |
954 | FALSE, /* partial_inplace */ | |
955 | 0, /* src_mask */ | |
956 | 0xffffffff, /* dst_mask */ | |
957 | FALSE), /* pcrel_offset */ | |
958 | ||
959 | /* A 16 bit tprel reloc. */ | |
960 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
961 | 0, /* rightshift */ |
962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 16, /* bitsize */ | |
b34976b6 | 964 | FALSE, /* pc_relative */ |
252b5132 | 965 | 0, /* bitpos */ |
7619e7c7 AM |
966 | complain_overflow_signed, /* complain_on_overflow */ |
967 | ppc_elf_unhandled_reloc, /* special_function */ | |
968 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 969 | FALSE, /* partial_inplace */ |
252b5132 RH |
970 | 0, /* src_mask */ |
971 | 0xffff, /* dst_mask */ | |
b34976b6 | 972 | FALSE), /* pcrel_offset */ |
252b5132 | 973 | |
7619e7c7 AM |
974 | /* Like TPREL16, but no overflow. */ |
975 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
976 | 0, /* rightshift */ |
977 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
978 | 16, /* bitsize */ | |
b34976b6 | 979 | FALSE, /* pc_relative */ |
252b5132 | 980 | 0, /* bitpos */ |
7619e7c7 AM |
981 | complain_overflow_dont, /* complain_on_overflow */ |
982 | ppc_elf_unhandled_reloc, /* special_function */ | |
983 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 984 | FALSE, /* partial_inplace */ |
252b5132 RH |
985 | 0, /* src_mask */ |
986 | 0xffff, /* dst_mask */ | |
b34976b6 | 987 | FALSE), /* pcrel_offset */ |
252b5132 | 988 | |
7619e7c7 AM |
989 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
990 | HOWTO (R_PPC_TPREL16_HI, | |
991 | 16, /* rightshift */ | |
992 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
993 | 16, /* bitsize */ | |
994 | FALSE, /* pc_relative */ | |
995 | 0, /* bitpos */ | |
996 | complain_overflow_dont, /* complain_on_overflow */ | |
997 | ppc_elf_unhandled_reloc, /* special_function */ | |
998 | "R_PPC_TPREL16_HI", /* name */ | |
999 | FALSE, /* partial_inplace */ | |
1000 | 0, /* src_mask */ | |
1001 | 0xffff, /* dst_mask */ | |
1002 | FALSE), /* pcrel_offset */ | |
1003 | ||
1004 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1005 | HOWTO (R_PPC_TPREL16_HA, | |
1006 | 16, /* rightshift */ | |
1007 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1008 | 16, /* bitsize */ | |
1009 | FALSE, /* pc_relative */ | |
1010 | 0, /* bitpos */ | |
1011 | complain_overflow_dont, /* complain_on_overflow */ | |
1012 | ppc_elf_unhandled_reloc, /* special_function */ | |
1013 | "R_PPC_TPREL16_HA", /* name */ | |
1014 | FALSE, /* partial_inplace */ | |
1015 | 0, /* src_mask */ | |
1016 | 0xffff, /* dst_mask */ | |
1017 | FALSE), /* pcrel_offset */ | |
1018 | ||
1019 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1020 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1021 | to the first entry. */ | |
1022 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
1023 | 0, /* rightshift */ |
1024 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1025 | 16, /* bitsize */ | |
b34976b6 | 1026 | FALSE, /* pc_relative */ |
252b5132 RH |
1027 | 0, /* bitpos */ |
1028 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1029 | ppc_elf_unhandled_reloc, /* special_function */ |
1030 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 1031 | FALSE, /* partial_inplace */ |
252b5132 RH |
1032 | 0, /* src_mask */ |
1033 | 0xffff, /* dst_mask */ | |
b34976b6 | 1034 | FALSE), /* pcrel_offset */ |
252b5132 | 1035 | |
7619e7c7 AM |
1036 | /* Like GOT_TLSGD16, but no overflow. */ |
1037 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1038 | 0, /* rightshift */ |
7619e7c7 | 1039 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1040 | 16, /* bitsize */ |
b34976b6 | 1041 | FALSE, /* pc_relative */ |
252b5132 | 1042 | 0, /* bitpos */ |
7619e7c7 AM |
1043 | complain_overflow_dont, /* complain_on_overflow */ |
1044 | ppc_elf_unhandled_reloc, /* special_function */ | |
1045 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1046 | FALSE, /* partial_inplace */ |
252b5132 RH |
1047 | 0, /* src_mask */ |
1048 | 0xffff, /* dst_mask */ | |
b34976b6 | 1049 | FALSE), /* pcrel_offset */ |
252b5132 | 1050 | |
7619e7c7 AM |
1051 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1052 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1053 | 16, /* 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 | ppc_elf_unhandled_reloc, /* special_function */ | |
1060 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1061 | FALSE, /* partial_inplace */ | |
1062 | 0, /* src_mask */ | |
1063 | 0xffff, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
252b5132 | 1065 | |
7619e7c7 AM |
1066 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1067 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1068 | 16, /* rightshift */ | |
1069 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1070 | 16, /* bitsize */ | |
1071 | FALSE, /* pc_relative */ | |
1072 | 0, /* bitpos */ | |
1073 | complain_overflow_dont, /* complain_on_overflow */ | |
1074 | ppc_elf_unhandled_reloc, /* special_function */ | |
1075 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1076 | FALSE, /* partial_inplace */ | |
1077 | 0, /* src_mask */ | |
1078 | 0xffff, /* dst_mask */ | |
1079 | FALSE), /* pcrel_offset */ | |
1080 | ||
1081 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1082 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1083 | first entry. */ | |
1084 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1085 | 0, /* rightshift */ |
1086 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1087 | 16, /* bitsize */ | |
7619e7c7 | 1088 | FALSE, /* pc_relative */ |
252b5132 RH |
1089 | 0, /* bitpos */ |
1090 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1091 | ppc_elf_unhandled_reloc, /* special_function */ |
1092 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1093 | FALSE, /* partial_inplace */ |
252b5132 RH |
1094 | 0, /* src_mask */ |
1095 | 0xffff, /* dst_mask */ | |
b34976b6 | 1096 | FALSE), /* pcrel_offset */ |
252b5132 | 1097 | |
7619e7c7 AM |
1098 | /* Like GOT_TLSLD16, but no overflow. */ |
1099 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1100 | 0, /* rightshift */ |
7619e7c7 AM |
1101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1102 | 16, /* bitsize */ | |
b34976b6 | 1103 | FALSE, /* pc_relative */ |
252b5132 RH |
1104 | 0, /* bitpos */ |
1105 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1106 | ppc_elf_unhandled_reloc, /* special_function */ |
1107 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1108 | FALSE, /* partial_inplace */ |
252b5132 | 1109 | 0, /* src_mask */ |
7619e7c7 | 1110 | 0xffff, /* dst_mask */ |
b34976b6 | 1111 | FALSE), /* pcrel_offset */ |
252b5132 | 1112 | |
7619e7c7 AM |
1113 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1114 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1115 | 16, /* rightshift */ | |
1116 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 16, /* bitsize */ | |
b34976b6 | 1118 | FALSE, /* pc_relative */ |
252b5132 RH |
1119 | 0, /* bitpos */ |
1120 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1121 | ppc_elf_unhandled_reloc, /* special_function */ |
1122 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1123 | FALSE, /* partial_inplace */ |
252b5132 | 1124 | 0, /* src_mask */ |
7619e7c7 | 1125 | 0xffff, /* dst_mask */ |
b34976b6 | 1126 | FALSE), /* pcrel_offset */ |
252b5132 | 1127 | |
7619e7c7 AM |
1128 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1129 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1130 | 16, /* rightshift */ | |
1131 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1132 | 16, /* bitsize */ | |
1133 | FALSE, /* pc_relative */ | |
1134 | 0, /* bitpos */ | |
1135 | complain_overflow_dont, /* complain_on_overflow */ | |
1136 | ppc_elf_unhandled_reloc, /* special_function */ | |
1137 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1138 | FALSE, /* partial_inplace */ | |
1139 | 0, /* src_mask */ | |
1140 | 0xffff, /* dst_mask */ | |
1141 | FALSE), /* pcrel_offset */ | |
1142 | ||
1143 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1144 | the offset to the entry. */ | |
1145 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1146 | 0, /* rightshift */ |
1147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1148 | 16, /* bitsize */ | |
b34976b6 | 1149 | FALSE, /* pc_relative */ |
252b5132 RH |
1150 | 0, /* bitpos */ |
1151 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1152 | ppc_elf_unhandled_reloc, /* special_function */ |
1153 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1154 | FALSE, /* partial_inplace */ |
252b5132 RH |
1155 | 0, /* src_mask */ |
1156 | 0xffff, /* dst_mask */ | |
b34976b6 | 1157 | FALSE), /* pcrel_offset */ |
252b5132 | 1158 | |
7619e7c7 AM |
1159 | /* Like GOT_DTPREL16, but no overflow. */ |
1160 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1161 | 0, /* rightshift */ | |
1162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1163 | 16, /* bitsize */ | |
1164 | FALSE, /* pc_relative */ | |
1165 | 0, /* bitpos */ | |
1166 | complain_overflow_dont, /* complain_on_overflow */ | |
1167 | ppc_elf_unhandled_reloc, /* special_function */ | |
1168 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1169 | FALSE, /* partial_inplace */ | |
1170 | 0, /* src_mask */ | |
1171 | 0xffff, /* dst_mask */ | |
1172 | FALSE), /* pcrel_offset */ | |
252b5132 | 1173 | |
7619e7c7 AM |
1174 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1175 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1176 | 16, /* rightshift */ | |
1177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1178 | 16, /* bitsize */ | |
1179 | FALSE, /* pc_relative */ | |
1180 | 0, /* bitpos */ | |
1181 | complain_overflow_dont, /* complain_on_overflow */ | |
1182 | ppc_elf_unhandled_reloc, /* special_function */ | |
1183 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1184 | FALSE, /* partial_inplace */ | |
1185 | 0, /* src_mask */ | |
1186 | 0xffff, /* dst_mask */ | |
1187 | FALSE), /* pcrel_offset */ | |
252b5132 | 1188 | |
7619e7c7 AM |
1189 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1190 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1191 | 16, /* rightshift */ | |
1192 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1193 | 16, /* bitsize */ | |
1194 | FALSE, /* pc_relative */ | |
1195 | 0, /* bitpos */ | |
1196 | complain_overflow_dont, /* complain_on_overflow */ | |
1197 | ppc_elf_unhandled_reloc, /* special_function */ | |
1198 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1199 | FALSE, /* partial_inplace */ | |
1200 | 0, /* src_mask */ | |
1201 | 0xffff, /* dst_mask */ | |
1202 | FALSE), /* pcrel_offset */ | |
c3668558 | 1203 | |
7619e7c7 AM |
1204 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1205 | offset to the entry. */ | |
1206 | HOWTO (R_PPC_GOT_TPREL16, | |
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 | ppc_elf_unhandled_reloc, /* special_function */ | |
1214 | "R_PPC_GOT_TPREL16", /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0, /* src_mask */ | |
1217 | 0xffff, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
1220 | /* Like GOT_TPREL16, but no overflow. */ | |
1221 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
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 | ppc_elf_unhandled_reloc, /* special_function */ | |
1229 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0, /* src_mask */ | |
1232 | 0xffff, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1236 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1237 | 16, /* rightshift */ | |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_dont, /* complain_on_overflow */ | |
1243 | ppc_elf_unhandled_reloc, /* special_function */ | |
1244 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xffff, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1251 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1252 | 16, /* rightshift */ | |
1253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 16, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | ppc_elf_unhandled_reloc, /* special_function */ | |
1259 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | 0xffff, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1266 | in the SVR4 ELF ABI. */ | |
1267 | ||
1268 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1269 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1270 | 0, /* rightshift */ | |
1271 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1272 | 32, /* bitsize */ | |
1273 | FALSE, /* pc_relative */ | |
1274 | 0, /* bitpos */ | |
86c95733 | 1275 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1276 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1277 | "R_PPC_EMB_NADDR32", /* name */ |
1278 | FALSE, /* partial_inplace */ | |
1279 | 0, /* src_mask */ | |
1280 | 0xffffffff, /* dst_mask */ | |
1281 | FALSE), /* pcrel_offset */ | |
1282 | ||
1283 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1284 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1285 | 0, /* rightshift */ | |
1286 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1287 | 16, /* bitsize */ | |
1288 | FALSE, /* pc_relative */ | |
1289 | 0, /* bitpos */ | |
86c95733 | 1290 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1291 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1292 | "R_PPC_EMB_NADDR16", /* name */ |
1293 | FALSE, /* partial_inplace */ | |
1294 | 0, /* src_mask */ | |
1295 | 0xffff, /* dst_mask */ | |
1296 | FALSE), /* pcrel_offset */ | |
1297 | ||
1298 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1299 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1300 | 0, /* rightshift */ | |
1301 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1302 | 16, /* bitsize */ | |
1303 | FALSE, /* pc_relative */ | |
1304 | 0, /* bitpos */ | |
1305 | complain_overflow_dont,/* complain_on_overflow */ | |
3ce51288 | 1306 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1307 | "R_PPC_EMB_ADDR16_LO", /* name */ |
1308 | FALSE, /* partial_inplace */ | |
1309 | 0, /* src_mask */ | |
1310 | 0xffff, /* dst_mask */ | |
1311 | FALSE), /* pcrel_offset */ | |
1312 | ||
1313 | /* The high order 16 bits of the addend minus the symbol. */ | |
1314 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1315 | 16, /* rightshift */ | |
1316 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1317 | 16, /* bitsize */ | |
1318 | FALSE, /* pc_relative */ | |
1319 | 0, /* bitpos */ | |
1320 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1321 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1322 | "R_PPC_EMB_NADDR16_HI", /* name */ |
1323 | FALSE, /* partial_inplace */ | |
1324 | 0, /* src_mask */ | |
1325 | 0xffff, /* dst_mask */ | |
1326 | FALSE), /* pcrel_offset */ | |
1327 | ||
1328 | /* The high order 16 bits of the result of the addend minus the address, | |
1329 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1330 | is negative. */ | |
1331 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1332 | 16, /* rightshift */ | |
1333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1338 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1339 | "R_PPC_EMB_NADDR16_HA", /* name */ |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1346 | address in the .sdata section, and returning the offset from | |
1347 | _SDA_BASE_ for that relocation. */ | |
1348 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1349 | 0, /* rightshift */ | |
1350 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1351 | 16, /* bitsize */ | |
1352 | FALSE, /* pc_relative */ | |
1353 | 0, /* bitpos */ | |
bd6c6e2b | 1354 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1355 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1356 | "R_PPC_EMB_SDAI16", /* name */ |
1357 | FALSE, /* partial_inplace */ | |
1358 | 0, /* src_mask */ | |
1359 | 0xffff, /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
1362 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1363 | address in the .sdata2 section, and returning the offset from | |
1364 | _SDA2_BASE_ for that relocation. */ | |
1365 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1366 | 0, /* rightshift */ | |
1367 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 16, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
bd6c6e2b | 1371 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1372 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1373 | "R_PPC_EMB_SDA2I16", /* name */ |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
1379 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1380 | small data items. */ | |
1381 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1382 | 0, /* rightshift */ | |
1383 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1384 | 16, /* bitsize */ | |
1385 | FALSE, /* pc_relative */ | |
1386 | 0, /* bitpos */ | |
1387 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1388 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1389 | "R_PPC_EMB_SDA2REL", /* name */ |
1390 | FALSE, /* partial_inplace */ | |
1391 | 0, /* src_mask */ | |
1392 | 0xffff, /* dst_mask */ | |
1393 | FALSE), /* pcrel_offset */ | |
1394 | ||
1395 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1396 | signed offset from the appropriate base, and filling in the register | |
1397 | field with the appropriate register (0, 2, or 13). */ | |
1398 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1399 | 0, /* rightshift */ | |
1400 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1401 | 16, /* bitsize */ | |
1402 | FALSE, /* pc_relative */ | |
1403 | 0, /* bitpos */ | |
1404 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1405 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1406 | "R_PPC_EMB_SDA21", /* name */ |
1407 | FALSE, /* partial_inplace */ | |
1408 | 0, /* src_mask */ | |
1409 | 0xffff, /* dst_mask */ | |
1410 | FALSE), /* pcrel_offset */ | |
1411 | ||
1412 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1413 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1414 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1415 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1416 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1417 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1418 | ||
1419 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1420 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1421 | register field with the appropriate register (0, 2, or 13). */ | |
1422 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1423 | 0, /* rightshift */ | |
1424 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 16, /* bitsize */ | |
ddfd6795 | 1426 | FALSE, /* pc_relative */ |
25dbc73a AM |
1427 | 0, /* bitpos */ |
1428 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1429 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1430 | "R_PPC_EMB_RELSDA", /* name */ |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0, /* src_mask */ | |
1433 | 0xffff, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
b9c361e0 JL |
1436 | /* A relative 8 bit branch. */ |
1437 | HOWTO (R_PPC_VLE_REL8, /* type */ | |
1438 | 1, /* rightshift */ | |
1439 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1440 | 8, /* bitsize */ | |
1441 | TRUE, /* pc_relative */ | |
1442 | 0, /* bitpos */ | |
1443 | complain_overflow_signed, /* complain_on_overflow */ | |
1444 | bfd_elf_generic_reloc, /* special_function */ | |
1445 | "R_PPC_VLE_REL8", /* name */ | |
1446 | FALSE, /* partial_inplace */ | |
1447 | 0, /* src_mask */ | |
1448 | 0xff, /* dst_mask */ | |
1449 | TRUE), /* pcrel_offset */ | |
68ffbac6 | 1450 | |
b9c361e0 JL |
1451 | /* A relative 15 bit branch. */ |
1452 | HOWTO (R_PPC_VLE_REL15, /* type */ | |
1453 | 1, /* rightshift */ | |
1454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1455 | 15, /* bitsize */ | |
1456 | TRUE, /* pc_relative */ | |
1457 | 1, /* bitpos */ | |
1458 | complain_overflow_signed, /* complain_on_overflow */ | |
1459 | bfd_elf_generic_reloc, /* special_function */ | |
1460 | "R_PPC_VLE_REL15", /* name */ | |
1461 | FALSE, /* partial_inplace */ | |
1462 | 0, /* src_mask */ | |
dfdaec14 | 1463 | 0xfffe, /* dst_mask */ |
b9c361e0 JL |
1464 | TRUE), /* pcrel_offset */ |
1465 | ||
68ffbac6 | 1466 | /* A relative 24 bit branch. */ |
b9c361e0 JL |
1467 | HOWTO (R_PPC_VLE_REL24, /* type */ |
1468 | 1, /* rightshift */ | |
1469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1470 | 24, /* bitsize */ | |
1471 | TRUE, /* pc_relative */ | |
1472 | 1, /* bitpos */ | |
1473 | complain_overflow_signed, /* complain_on_overflow */ | |
1474 | bfd_elf_generic_reloc, /* special_function */ | |
1475 | "R_PPC_VLE_REL24", /* name */ | |
1476 | FALSE, /* partial_inplace */ | |
1477 | 0, /* src_mask */ | |
1478 | 0x1fffffe, /* dst_mask */ | |
1479 | TRUE), /* pcrel_offset */ | |
1480 | ||
1481 | /* The 16 LSBS in split16a format. */ | |
1482 | HOWTO (R_PPC_VLE_LO16A, /* type */ | |
1483 | 0, /* rightshift */ | |
1484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1485 | 16, /* bitsize */ |
bdaacd3a | 1486 | FALSE, /* pc_relative */ |
b9c361e0 | 1487 | 0, /* bitpos */ |
86c95733 | 1488 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1489 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1490 | "R_PPC_VLE_LO16A", /* name */ |
1491 | FALSE, /* partial_inplace */ | |
1492 | 0, /* src_mask */ | |
08dc996f | 1493 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1494 | FALSE), /* pcrel_offset */ |
1495 | ||
1496 | /* The 16 LSBS in split16d format. */ | |
1497 | HOWTO (R_PPC_VLE_LO16D, /* type */ | |
1498 | 0, /* rightshift */ | |
1499 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1500 | 16, /* bitsize */ |
b9c361e0 JL |
1501 | FALSE, /* pc_relative */ |
1502 | 0, /* bitpos */ | |
86c95733 | 1503 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1504 | ppc_elf_unhandled_reloc, /* special_function */ |
1505 | "R_PPC_VLE_LO16D", /* name */ | |
b9c361e0 JL |
1506 | FALSE, /* partial_inplace */ |
1507 | 0, /* src_mask */ | |
5499c7c7 | 1508 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1509 | FALSE), /* pcrel_offset */ |
1510 | ||
1511 | /* Bits 16-31 split16a format. */ | |
1512 | HOWTO (R_PPC_VLE_HI16A, /* type */ | |
86c95733 | 1513 | 16, /* rightshift */ |
b9c361e0 | 1514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1515 | 16, /* bitsize */ |
b9c361e0 JL |
1516 | FALSE, /* pc_relative */ |
1517 | 0, /* bitpos */ | |
86c95733 | 1518 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1519 | ppc_elf_unhandled_reloc, /* special_function */ |
1520 | "R_PPC_VLE_HI16A", /* name */ | |
b9c361e0 JL |
1521 | FALSE, /* partial_inplace */ |
1522 | 0, /* src_mask */ | |
08dc996f | 1523 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1524 | FALSE), /* pcrel_offset */ |
1525 | ||
1526 | /* Bits 16-31 split16d format. */ | |
1527 | HOWTO (R_PPC_VLE_HI16D, /* type */ | |
86c95733 | 1528 | 16, /* rightshift */ |
b9c361e0 | 1529 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1530 | 16, /* bitsize */ |
b9c361e0 JL |
1531 | FALSE, /* pc_relative */ |
1532 | 0, /* bitpos */ | |
86c95733 | 1533 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1534 | ppc_elf_unhandled_reloc, /* special_function */ |
1535 | "R_PPC_VLE_HI16D", /* name */ | |
b9c361e0 JL |
1536 | FALSE, /* partial_inplace */ |
1537 | 0, /* src_mask */ | |
5499c7c7 | 1538 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1539 | FALSE), /* pcrel_offset */ |
1540 | ||
1541 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
1542 | HOWTO (R_PPC_VLE_HA16A, /* type */ | |
86c95733 | 1543 | 16, /* rightshift */ |
b9c361e0 | 1544 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1545 | 16, /* bitsize */ |
b9c361e0 JL |
1546 | FALSE, /* pc_relative */ |
1547 | 0, /* bitpos */ | |
86c95733 | 1548 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1549 | ppc_elf_unhandled_reloc, /* special_function */ |
1550 | "R_PPC_VLE_HA16A", /* name */ | |
b9c361e0 JL |
1551 | FALSE, /* partial_inplace */ |
1552 | 0, /* src_mask */ | |
08dc996f | 1553 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1554 | FALSE), /* pcrel_offset */ |
1555 | ||
1556 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
1557 | HOWTO (R_PPC_VLE_HA16D, /* type */ | |
86c95733 | 1558 | 16, /* rightshift */ |
b9c361e0 | 1559 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1560 | 16, /* bitsize */ |
b9c361e0 JL |
1561 | FALSE, /* pc_relative */ |
1562 | 0, /* bitpos */ | |
86c95733 | 1563 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1564 | ppc_elf_unhandled_reloc, /* special_function */ |
1565 | "R_PPC_VLE_HA16D", /* name */ | |
b9c361e0 JL |
1566 | FALSE, /* partial_inplace */ |
1567 | 0, /* src_mask */ | |
5499c7c7 | 1568 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1569 | FALSE), /* pcrel_offset */ |
1570 | ||
86c95733 AM |
1571 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
1572 | instructions. If the register base is 0 then the linker changes | |
1573 | the e_add16i to an e_li instruction. */ | |
1574 | HOWTO (R_PPC_VLE_SDA21, /* type */ | |
b9c361e0 JL |
1575 | 0, /* rightshift */ |
1576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1577 | 16, /* bitsize */ |
b9c361e0 JL |
1578 | FALSE, /* pc_relative */ |
1579 | 0, /* bitpos */ | |
86c95733 | 1580 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 AM |
1581 | ppc_elf_unhandled_reloc, /* special_function */ |
1582 | "R_PPC_VLE_SDA21", /* name */ | |
b9c361e0 JL |
1583 | FALSE, /* partial_inplace */ |
1584 | 0, /* src_mask */ | |
1585 | 0xffff, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
1587 | ||
86c95733 | 1588 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
b9c361e0 JL |
1589 | HOWTO (R_PPC_VLE_SDA21_LO, /* type */ |
1590 | 0, /* rightshift */ | |
1591 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1592 | 16, /* bitsize */ |
b9c361e0 JL |
1593 | FALSE, /* pc_relative */ |
1594 | 0, /* bitpos */ | |
86c95733 | 1595 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1596 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1597 | "R_PPC_VLE_SDA21_LO", /* name */ |
1598 | FALSE, /* partial_inplace */ | |
1599 | 0, /* src_mask */ | |
86c95733 | 1600 | 0xffff, /* dst_mask */ |
b9c361e0 JL |
1601 | FALSE), /* pcrel_offset */ |
1602 | ||
1603 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
1604 | HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */ | |
1605 | 0, /* rightshift */ | |
1606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1607 | 16, /* bitsize */ |
b9c361e0 JL |
1608 | FALSE, /* pc_relative */ |
1609 | 0, /* bitpos */ | |
3ce51288 AM |
1610 | complain_overflow_dont, /* complain_on_overflow */ |
1611 | ppc_elf_unhandled_reloc, /* special_function */ | |
1612 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
b9c361e0 JL |
1613 | FALSE, /* partial_inplace */ |
1614 | 0, /* src_mask */ | |
08dc996f | 1615 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1616 | FALSE), /* pcrel_offset */ |
1617 | ||
1618 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
b9c361e0 JL |
1619 | HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */ |
1620 | 0, /* rightshift */ | |
1621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1622 | 16, /* bitsize */ |
b9c361e0 JL |
1623 | FALSE, /* pc_relative */ |
1624 | 0, /* bitpos */ | |
3ce51288 AM |
1625 | complain_overflow_dont, /* complain_on_overflow */ |
1626 | ppc_elf_unhandled_reloc, /* special_function */ | |
1627 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
b9c361e0 JL |
1628 | FALSE, /* partial_inplace */ |
1629 | 0, /* src_mask */ | |
5499c7c7 | 1630 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1631 | FALSE), /* pcrel_offset */ |
1632 | ||
1633 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
3ce51288 | 1634 | HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */ |
86c95733 | 1635 | 16, /* rightshift */ |
b9c361e0 | 1636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1637 | 16, /* bitsize */ |
b9c361e0 JL |
1638 | FALSE, /* pc_relative */ |
1639 | 0, /* bitpos */ | |
3ce51288 AM |
1640 | complain_overflow_dont, /* complain_on_overflow */ |
1641 | ppc_elf_unhandled_reloc, /* special_function */ | |
1642 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
b9c361e0 JL |
1643 | FALSE, /* partial_inplace */ |
1644 | 0, /* src_mask */ | |
08dc996f | 1645 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1646 | FALSE), /* pcrel_offset */ |
1647 | ||
1648 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
3ce51288 | 1649 | HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */ |
86c95733 | 1650 | 16, /* rightshift */ |
b9c361e0 | 1651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1652 | 16, /* bitsize */ |
b9c361e0 JL |
1653 | FALSE, /* pc_relative */ |
1654 | 0, /* bitpos */ | |
3ce51288 AM |
1655 | complain_overflow_dont, /* complain_on_overflow */ |
1656 | ppc_elf_unhandled_reloc, /* special_function */ | |
1657 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
b9c361e0 JL |
1658 | FALSE, /* partial_inplace */ |
1659 | 0, /* src_mask */ | |
5499c7c7 | 1660 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1661 | FALSE), /* pcrel_offset */ |
1662 | ||
1663 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
3ce51288 | 1664 | HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */ |
86c95733 | 1665 | 16, /* rightshift */ |
b9c361e0 | 1666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1667 | 16, /* bitsize */ |
b9c361e0 JL |
1668 | FALSE, /* pc_relative */ |
1669 | 0, /* bitpos */ | |
3ce51288 AM |
1670 | complain_overflow_dont, /* complain_on_overflow */ |
1671 | ppc_elf_unhandled_reloc, /* special_function */ | |
1672 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
b9c361e0 JL |
1673 | FALSE, /* partial_inplace */ |
1674 | 0, /* src_mask */ | |
08dc996f | 1675 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1676 | FALSE), /* pcrel_offset */ |
1677 | ||
1678 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
3ce51288 | 1679 | HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */ |
86c95733 | 1680 | 16, /* rightshift */ |
b9c361e0 | 1681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1682 | 16, /* bitsize */ |
b9c361e0 JL |
1683 | FALSE, /* pc_relative */ |
1684 | 0, /* bitpos */ | |
3ce51288 AM |
1685 | complain_overflow_dont, /* complain_on_overflow */ |
1686 | ppc_elf_unhandled_reloc, /* special_function */ | |
1687 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
b9c361e0 JL |
1688 | FALSE, /* partial_inplace */ |
1689 | 0, /* src_mask */ | |
5499c7c7 | 1690 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1691 | FALSE), /* pcrel_offset */ |
1692 | ||
83eef883 AFB |
1693 | /* e_li split20 format. */ |
1694 | HOWTO (R_PPC_VLE_ADDR20, /* type */ | |
1695 | 16, /* rightshift */ | |
1696 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1697 | 20, /* bitsize */ | |
1698 | FALSE, /* pc_relative */ | |
1699 | 0, /* bitpos */ | |
1700 | complain_overflow_dont, /* complain_on_overflow */ | |
1701 | bfd_elf_generic_reloc, /* special_function */ | |
1702 | "R_PPC_VLE_ADDR20", /* name */ | |
1703 | FALSE, /* partial_inplace */ | |
1704 | 0, /* src_mask */ | |
1705 | 0x1f07ff, /* dst_mask */ | |
1706 | FALSE), /* pcrel_offset */ | |
1707 | ||
e054468f AM |
1708 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1709 | 0, /* rightshift */ | |
1710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1711 | 32, /* bitsize */ | |
1712 | FALSE, /* pc_relative */ | |
1713 | 0, /* bitpos */ | |
86c95733 | 1714 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1715 | ppc_elf_unhandled_reloc, /* special_function */ |
e054468f AM |
1716 | "R_PPC_IRELATIVE", /* name */ |
1717 | FALSE, /* partial_inplace */ | |
1718 | 0, /* src_mask */ | |
1719 | 0xffffffff, /* dst_mask */ | |
1720 | FALSE), /* pcrel_offset */ | |
1721 | ||
d7128ce4 AM |
1722 | /* A 16 bit relative relocation. */ |
1723 | HOWTO (R_PPC_REL16, /* type */ | |
1724 | 0, /* rightshift */ | |
1725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1726 | 16, /* bitsize */ | |
1727 | TRUE, /* pc_relative */ | |
1728 | 0, /* bitpos */ | |
86c95733 | 1729 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1730 | bfd_elf_generic_reloc, /* special_function */ |
1731 | "R_PPC_REL16", /* name */ | |
1732 | FALSE, /* partial_inplace */ | |
1733 | 0, /* src_mask */ | |
1734 | 0xffff, /* dst_mask */ | |
1735 | TRUE), /* pcrel_offset */ | |
1736 | ||
1737 | /* A 16 bit relative relocation without overflow. */ | |
1738 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1739 | 0, /* rightshift */ | |
1740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1741 | 16, /* bitsize */ | |
1742 | TRUE, /* pc_relative */ | |
1743 | 0, /* bitpos */ | |
1744 | complain_overflow_dont,/* complain_on_overflow */ | |
1745 | bfd_elf_generic_reloc, /* special_function */ | |
1746 | "R_PPC_REL16_LO", /* name */ | |
1747 | FALSE, /* partial_inplace */ | |
1748 | 0, /* src_mask */ | |
1749 | 0xffff, /* dst_mask */ | |
1750 | TRUE), /* pcrel_offset */ | |
1751 | ||
1752 | /* The high order 16 bits of a relative address. */ | |
1753 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1754 | 16, /* rightshift */ | |
1755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1756 | 16, /* bitsize */ | |
1757 | TRUE, /* pc_relative */ | |
1758 | 0, /* bitpos */ | |
1759 | complain_overflow_dont, /* complain_on_overflow */ | |
1760 | bfd_elf_generic_reloc, /* special_function */ | |
1761 | "R_PPC_REL16_HI", /* name */ | |
1762 | FALSE, /* partial_inplace */ | |
1763 | 0, /* src_mask */ | |
1764 | 0xffff, /* dst_mask */ | |
1765 | TRUE), /* pcrel_offset */ | |
1766 | ||
1767 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1768 | the low 16 bits, treated as a signed number, is negative. */ | |
1769 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1770 | 16, /* rightshift */ | |
1771 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1772 | 16, /* bitsize */ | |
1773 | TRUE, /* pc_relative */ | |
1774 | 0, /* bitpos */ | |
1775 | complain_overflow_dont, /* complain_on_overflow */ | |
1776 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1777 | "R_PPC_REL16_HA", /* name */ | |
1778 | FALSE, /* partial_inplace */ | |
1779 | 0, /* src_mask */ | |
1780 | 0xffff, /* dst_mask */ | |
1781 | TRUE), /* pcrel_offset */ | |
1782 | ||
a680de9a PB |
1783 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
1784 | HOWTO (R_PPC_REL16DX_HA, /* type */ | |
1785 | 16, /* rightshift */ | |
1786 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1787 | 16, /* bitsize */ | |
1788 | TRUE, /* pc_relative */ | |
1789 | 0, /* bitpos */ | |
1790 | complain_overflow_signed, /* complain_on_overflow */ | |
1791 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1792 | "R_PPC_REL16DX_HA", /* name */ | |
1793 | FALSE, /* partial_inplace */ | |
1794 | 0, /* src_mask */ | |
1795 | 0x1fffc1, /* dst_mask */ | |
1796 | TRUE), /* pcrel_offset */ | |
1797 | ||
7ba71655 AM |
1798 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
1799 | HOWTO (R_PPC_16DX_HA, /* type */ | |
1800 | 16, /* rightshift */ | |
1801 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
1803 | FALSE, /* pc_relative */ | |
1804 | 0, /* bitpos */ | |
1805 | complain_overflow_signed, /* complain_on_overflow */ | |
1806 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1807 | "R_PPC_16DX_HA", /* name */ | |
1808 | FALSE, /* partial_inplace */ | |
1809 | 0, /* src_mask */ | |
1810 | 0x1fffc1, /* dst_mask */ | |
1811 | FALSE), /* pcrel_offset */ | |
1812 | ||
25dbc73a AM |
1813 | /* GNU extension to record C++ vtable hierarchy. */ |
1814 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1815 | 0, /* rightshift */ | |
1816 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1817 | 0, /* bitsize */ | |
1818 | FALSE, /* pc_relative */ | |
1819 | 0, /* bitpos */ | |
1820 | complain_overflow_dont, /* complain_on_overflow */ | |
1821 | NULL, /* special_function */ | |
1822 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1823 | FALSE, /* partial_inplace */ | |
1824 | 0, /* src_mask */ | |
1825 | 0, /* dst_mask */ | |
1826 | FALSE), /* pcrel_offset */ | |
1827 | ||
1828 | /* GNU extension to record C++ vtable member usage. */ | |
1829 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1830 | 0, /* rightshift */ | |
1831 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1832 | 0, /* bitsize */ | |
1833 | FALSE, /* pc_relative */ | |
1834 | 0, /* bitpos */ | |
1835 | complain_overflow_dont, /* complain_on_overflow */ | |
1836 | NULL, /* special_function */ | |
1837 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1838 | FALSE, /* partial_inplace */ |
1839 | 0, /* src_mask */ | |
25dbc73a | 1840 | 0, /* dst_mask */ |
7619e7c7 AM |
1841 | FALSE), /* pcrel_offset */ |
1842 | ||
25dbc73a AM |
1843 | /* Phony reloc to handle AIX style TOC entries. */ |
1844 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1845 | 0, /* rightshift */ |
1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1847 | 16, /* bitsize */ | |
1848 | FALSE, /* pc_relative */ | |
1849 | 0, /* bitpos */ | |
25dbc73a | 1850 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1851 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a | 1852 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1853 | FALSE, /* partial_inplace */ |
1854 | 0, /* src_mask */ | |
1855 | 0xffff, /* dst_mask */ | |
1856 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1857 | }; |
1858 | \f | |
1859 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1860 | ||
1861 | static void | |
1862 | ppc_elf_howto_init (void) | |
1863 | { | |
1864 | unsigned int i, type; | |
1865 | ||
1866 | for (i = 0; | |
1867 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1868 | i++) | |
1869 | { | |
1870 | type = ppc_elf_howto_raw[i].type; | |
1871 | if (type >= (sizeof (ppc_elf_howto_table) | |
1872 | / sizeof (ppc_elf_howto_table[0]))) | |
1873 | abort (); | |
1874 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | static reloc_howto_type * | |
1879 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1880 | bfd_reloc_code_real_type code) | |
1881 | { | |
1882 | enum elf_ppc_reloc_type r; | |
1883 | ||
1884 | /* Initialize howto table if not already done. */ | |
1885 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1886 | ppc_elf_howto_init (); | |
1887 | ||
1888 | switch (code) | |
1889 | { | |
1890 | default: | |
1891 | return NULL; | |
1892 | ||
1893 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1894 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1895 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1896 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1897 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1898 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1899 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1900 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1901 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1902 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1903 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1904 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1905 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1906 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1907 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1908 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1909 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1910 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1911 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1912 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1913 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1914 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1915 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1916 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1917 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1918 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1919 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1920 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1921 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1922 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1923 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1924 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1925 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1926 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1927 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1928 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1929 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1930 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1931 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1932 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1933 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1934 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1935 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1936 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1937 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1938 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1939 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1940 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1941 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1942 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1943 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1944 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1945 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1946 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1947 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1948 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1949 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1950 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1951 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1952 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1953 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1954 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1955 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1956 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1957 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1958 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1959 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1960 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1961 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1962 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1963 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1964 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1965 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1966 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1967 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1968 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1969 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1970 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1971 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1972 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1973 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1974 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1975 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1976 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1977 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1978 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1979 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1980 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1981 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1982 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1983 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1984 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1985 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1986 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1987 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1988 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1989 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1990 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1991 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1992 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1993 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1994 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1995 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1996 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1997 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1998 | r = R_PPC_VLE_SDAREL_LO16A; | |
1999 | break; | |
2000 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
2001 | r = R_PPC_VLE_SDAREL_LO16D; | |
2002 | break; | |
2003 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
2004 | r = R_PPC_VLE_SDAREL_HI16A; | |
2005 | break; | |
2006 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
2007 | r = R_PPC_VLE_SDAREL_HI16D; | |
2008 | break; | |
2009 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
2010 | r = R_PPC_VLE_SDAREL_HA16A; | |
2011 | break; | |
2012 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
2013 | r = R_PPC_VLE_SDAREL_HA16D; | |
2014 | break; | |
d7128ce4 AM |
2015 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
2016 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
2017 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
2018 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 2019 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 2020 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
2021 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
2022 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
2023 | } | |
2024 | ||
2025 | return ppc_elf_howto_table[r]; | |
2026 | }; | |
2027 | ||
157090f7 AM |
2028 | static reloc_howto_type * |
2029 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2030 | const char *r_name) | |
2031 | { | |
2032 | unsigned int i; | |
2033 | ||
2034 | for (i = 0; | |
2035 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2036 | i++) | |
2037 | if (ppc_elf_howto_raw[i].name != NULL | |
2038 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2039 | return &ppc_elf_howto_raw[i]; | |
2040 | ||
2041 | return NULL; | |
2042 | } | |
2043 | ||
25dbc73a AM |
2044 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2045 | ||
f3185997 | 2046 | static bfd_boolean |
4aef7643 | 2047 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
2048 | arelent *cache_ptr, |
2049 | Elf_Internal_Rela *dst) | |
2050 | { | |
cd21f5da NC |
2051 | unsigned int r_type; |
2052 | ||
25dbc73a AM |
2053 | /* Initialize howto table if not already done. */ |
2054 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2055 | ppc_elf_howto_init (); | |
2056 | ||
cd21f5da NC |
2057 | r_type = ELF32_R_TYPE (dst->r_info); |
2058 | if (r_type >= R_PPC_max) | |
2059 | { | |
695344c0 | 2060 | /* xgettext:c-format */ |
0aa13fee | 2061 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 2062 | abfd, r_type); |
cd21f5da | 2063 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 2064 | return FALSE; |
cd21f5da | 2065 | } |
f3185997 | 2066 | |
cd21f5da | 2067 | cache_ptr->howto = ppc_elf_howto_table[r_type]; |
375de94a AM |
2068 | |
2069 | /* Just because the above assert didn't trigger doesn't mean that | |
2070 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
f3185997 | 2071 | if (cache_ptr->howto == NULL) |
375de94a | 2072 | { |
695344c0 | 2073 | /* xgettext:c-format */ |
0aa13fee | 2074 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 2075 | abfd, r_type); |
375de94a AM |
2076 | bfd_set_error (bfd_error_bad_value); |
2077 | ||
f3185997 | 2078 | return FALSE; |
375de94a | 2079 | } |
f3185997 NC |
2080 | |
2081 | return TRUE; | |
25dbc73a AM |
2082 | } |
2083 | ||
d7128ce4 | 2084 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2085 | |
2086 | static bfd_reloc_status_type | |
4aef7643 | 2087 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
2088 | arelent *reloc_entry, |
2089 | asymbol *symbol, | |
4aef7643 | 2090 | void *data, |
25dbc73a AM |
2091 | asection *input_section, |
2092 | bfd *output_bfd, | |
2093 | char **error_message ATTRIBUTE_UNUSED) | |
2094 | { | |
a680de9a PB |
2095 | enum elf_ppc_reloc_type r_type; |
2096 | long insn; | |
2097 | bfd_size_type octets; | |
2098 | bfd_vma value; | |
25dbc73a AM |
2099 | |
2100 | if (output_bfd != NULL) | |
2101 | { | |
2102 | reloc_entry->address += input_section->output_offset; | |
2103 | return bfd_reloc_ok; | |
2104 | } | |
2105 | ||
a680de9a PB |
2106 | reloc_entry->addend += 0x8000; |
2107 | r_type = reloc_entry->howto->type; | |
2108 | if (r_type != R_PPC_REL16DX_HA) | |
2109 | return bfd_reloc_continue; | |
2110 | ||
2111 | value = 0; | |
2112 | if (!bfd_is_com_section (symbol->section)) | |
2113 | value = symbol->value; | |
2114 | value += (reloc_entry->addend | |
2115 | + symbol->section->output_offset | |
2116 | + symbol->section->output_section->vma); | |
2117 | value -= (reloc_entry->address | |
2118 | + input_section->output_offset | |
2119 | + input_section->output_section->vma); | |
2120 | value >>= 16; | |
2121 | ||
2122 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2123 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2124 | insn &= ~0x1fffc1; | |
2125 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2126 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2127 | return bfd_reloc_ok; | |
25dbc73a AM |
2128 | } |
2129 | ||
2130 | static bfd_reloc_status_type | |
2131 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2132 | arelent *reloc_entry, | |
2133 | asymbol *symbol, | |
2134 | void *data, | |
2135 | asection *input_section, | |
2136 | bfd *output_bfd, | |
2137 | char **error_message) | |
2138 | { | |
2139 | /* If this is a relocatable link (output_bfd test tells us), just | |
2140 | call the generic function. Any adjustment will be done at final | |
2141 | link time. */ | |
2142 | if (output_bfd != NULL) | |
2143 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2144 | input_section, output_bfd, error_message); | |
2145 | ||
2146 | if (error_message != NULL) | |
2147 | { | |
2148 | static char buf[60]; | |
2149 | sprintf (buf, _("generic linker can't handle %s"), | |
2150 | reloc_entry->howto->name); | |
2151 | *error_message = buf; | |
2152 | } | |
2153 | return bfd_reloc_dangerous; | |
2154 | } | |
2155 | \f | |
2156 | /* Sections created by the linker. */ | |
2157 | ||
2158 | typedef struct elf_linker_section | |
2159 | { | |
c9a2f333 | 2160 | /* Pointer to the bfd section. */ |
25dbc73a | 2161 | asection *section; |
c9a2f333 AM |
2162 | /* Section name. */ |
2163 | const char *name; | |
2164 | /* Associated bss section name. */ | |
2165 | const char *bss_name; | |
2166 | /* Associated symbol name. */ | |
2167 | const char *sym_name; | |
046183de AM |
2168 | /* Associated symbol. */ |
2169 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2170 | } elf_linker_section_t; |
2171 | ||
2172 | /* Linked list of allocated pointer entries. This hangs off of the | |
2173 | symbol lists, and provides allows us to return different pointers, | |
2174 | based on different addend's. */ | |
2175 | ||
2176 | typedef struct elf_linker_section_pointers | |
2177 | { | |
2178 | /* next allocated pointer for this symbol */ | |
2179 | struct elf_linker_section_pointers *next; | |
2180 | /* offset of pointer from beginning of section */ | |
2181 | bfd_vma offset; | |
2182 | /* addend used */ | |
2183 | bfd_vma addend; | |
2184 | /* which linker section this is */ | |
2185 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2186 | } elf_linker_section_pointers_t; |
2187 | ||
2188 | struct ppc_elf_obj_tdata | |
2189 | { | |
2190 | struct elf_obj_tdata elf; | |
2191 | ||
2192 | /* A mapping from local symbols to offsets into the various linker | |
2193 | sections added. This is index by the symbol index. */ | |
2194 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2195 | |
2196 | /* Flags used to auto-detect plt type. */ | |
2197 | unsigned int makes_plt_call : 1; | |
2198 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2199 | }; |
2200 | ||
2201 | #define ppc_elf_tdata(bfd) \ | |
2202 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2203 | |
25dbc73a AM |
2204 | #define elf_local_ptr_offsets(bfd) \ |
2205 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2206 | |
0c8d6e5c AM |
2207 | #define is_ppc_elf(bfd) \ |
2208 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2209 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2210 | |
25dbc73a | 2211 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2212 | |
25dbc73a AM |
2213 | static bfd_boolean |
2214 | ppc_elf_mkobject (bfd *abfd) | |
2215 | { | |
0ffa91dd | 2216 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2217 | PPC32_ELF_DATA); |
25dbc73a | 2218 | } |
7619e7c7 | 2219 | |
14b57c7c AM |
2220 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
2221 | ||
2222 | bfd_boolean | |
2223 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
2224 | { | |
2225 | unsigned long mach = 0; | |
2226 | asection *s; | |
2227 | unsigned char *contents; | |
2228 | ||
2229 | if (abfd->arch_info->bits_per_word == 32 | |
2230 | && bfd_big_endian (abfd)) | |
2231 | { | |
2232 | ||
2233 | for (s = abfd->sections; s != NULL; s = s->next) | |
2234 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
2235 | break; | |
2236 | if (s != NULL) | |
2237 | mach = bfd_mach_ppc_vle; | |
2238 | } | |
2239 | ||
2240 | if (mach == 0) | |
2241 | { | |
2242 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2243 | if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents)) | |
2244 | { | |
2245 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
2246 | unsigned int i; | |
2247 | ||
2248 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
2249 | { | |
2250 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
2251 | switch (val >> 16) | |
2252 | { | |
2253 | case PPC_APUINFO_PMR: | |
2254 | case PPC_APUINFO_RFMCI: | |
2255 | if (mach == 0) | |
2256 | mach = bfd_mach_ppc_titan; | |
2257 | break; | |
2258 | ||
2259 | case PPC_APUINFO_ISEL: | |
2260 | case PPC_APUINFO_CACHELCK: | |
2261 | if (mach == bfd_mach_ppc_titan) | |
2262 | mach = bfd_mach_ppc_e500mc; | |
2263 | break; | |
2264 | ||
2265 | case PPC_APUINFO_SPE: | |
2266 | case PPC_APUINFO_EFS: | |
2267 | case PPC_APUINFO_BRLOCK: | |
2268 | if (mach != bfd_mach_ppc_vle) | |
2269 | mach = bfd_mach_ppc_e500; | |
8941017b | 2270 | break; |
14b57c7c AM |
2271 | |
2272 | case PPC_APUINFO_VLE: | |
2273 | mach = bfd_mach_ppc_vle; | |
2274 | break; | |
2275 | ||
2276 | default: | |
2277 | mach = -1ul; | |
2278 | } | |
2279 | } | |
2280 | free (contents); | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | if (mach != 0 && mach != -1ul) | |
2285 | { | |
2286 | const bfd_arch_info_type *arch; | |
2287 | ||
2288 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
2289 | if (arch->mach == mach) | |
2290 | { | |
2291 | abfd->arch_info = arch; | |
2292 | break; | |
2293 | } | |
2294 | } | |
2295 | return TRUE; | |
2296 | } | |
2297 | ||
25dbc73a | 2298 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 2299 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 2300 | |
25dbc73a AM |
2301 | static bfd_boolean |
2302 | ppc_elf_object_p (bfd *abfd) | |
2303 | { | |
14b57c7c AM |
2304 | if (!abfd->arch_info->the_default) |
2305 | return TRUE; | |
2306 | ||
2307 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
2308 | { |
2309 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2310 | |
25dbc73a AM |
2311 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2312 | { | |
2313 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2314 | abfd->arch_info = abfd->arch_info->next; | |
2315 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2316 | } | |
2317 | } | |
14b57c7c | 2318 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 2319 | } |
7619e7c7 | 2320 | |
25dbc73a | 2321 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2322 | |
25dbc73a AM |
2323 | static bfd_boolean |
2324 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2325 | { | |
2326 | BFD_ASSERT (!elf_flags_init (abfd) | |
2327 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2328 | |
25dbc73a AM |
2329 | elf_elfheader (abfd)->e_flags = flags; |
2330 | elf_flags_init (abfd) = TRUE; | |
2331 | return TRUE; | |
2332 | } | |
2333 | ||
25dbc73a | 2334 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2335 | |
b34976b6 | 2336 | static bfd_boolean |
25dbc73a | 2337 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2338 | { |
25dbc73a AM |
2339 | int offset; |
2340 | unsigned int size; | |
252b5132 | 2341 | |
25dbc73a AM |
2342 | switch (note->descsz) |
2343 | { | |
2344 | default: | |
2345 | return FALSE; | |
252b5132 | 2346 | |
25dbc73a AM |
2347 | case 268: /* Linux/PPC. */ |
2348 | /* pr_cursig */ | |
228e534f | 2349 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2350 | |
25dbc73a | 2351 | /* pr_pid */ |
228e534f | 2352 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2353 | |
25dbc73a AM |
2354 | /* pr_reg */ |
2355 | offset = 72; | |
2356 | size = 192; | |
deaaf2f3 | 2357 | |
25dbc73a AM |
2358 | break; |
2359 | } | |
deaaf2f3 | 2360 | |
25dbc73a AM |
2361 | /* Make a ".reg/999" section. */ |
2362 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2363 | size, note->descpos + offset); | |
2364 | } | |
252b5132 | 2365 | |
25dbc73a AM |
2366 | static bfd_boolean |
2367 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2368 | { | |
2369 | switch (note->descsz) | |
deaaf2f3 | 2370 | { |
25dbc73a AM |
2371 | default: |
2372 | return FALSE; | |
deaaf2f3 | 2373 | |
25dbc73a | 2374 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2375 | elf_tdata (abfd)->core->pid |
bc989cdc | 2376 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2377 | elf_tdata (abfd)->core->program |
25dbc73a | 2378 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2379 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2380 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2381 | } | |
9abc968f | 2382 | |
25dbc73a AM |
2383 | /* Note that for some reason, a spurious space is tacked |
2384 | onto the end of the args in some (at least one anyway) | |
2385 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2386 | |
25dbc73a | 2387 | { |
228e534f | 2388 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2389 | int n = strlen (command); |
70bccea4 | 2390 | |
25dbc73a AM |
2391 | if (0 < n && command[n - 1] == ' ') |
2392 | command[n - 1] = '\0'; | |
2393 | } | |
deaaf2f3 | 2394 | |
25dbc73a AM |
2395 | return TRUE; |
2396 | } | |
deaaf2f3 | 2397 | |
183e98be AM |
2398 | static char * |
2399 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2400 | { | |
2401 | switch (note_type) | |
2402 | { | |
2403 | default: | |
2404 | return NULL; | |
2405 | ||
2406 | case NT_PRPSINFO: | |
2407 | { | |
602f1657 | 2408 | char data[128] ATTRIBUTE_NONSTRING; |
183e98be AM |
2409 | va_list ap; |
2410 | ||
2411 | va_start (ap, note_type); | |
75cd47ed | 2412 | memset (data, 0, sizeof (data)); |
183e98be | 2413 | strncpy (data + 32, va_arg (ap, const char *), 16); |
be3e27bb | 2414 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 2415 | DIAGNOSTIC_PUSH; |
be3e27bb | 2416 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
2417 | -Wstringop-truncation: |
2418 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
2419 | */ | |
95da9854 L |
2420 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
2421 | #endif | |
183e98be | 2422 | strncpy (data + 48, va_arg (ap, const char *), 80); |
be3e27bb | 2423 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 2424 | DIAGNOSTIC_POP; |
fe75810f | 2425 | #endif |
183e98be AM |
2426 | va_end (ap); |
2427 | return elfcore_write_note (abfd, buf, bufsiz, | |
2428 | "CORE", note_type, data, sizeof (data)); | |
2429 | } | |
2430 | ||
2431 | case NT_PRSTATUS: | |
2432 | { | |
2433 | char data[268]; | |
2434 | va_list ap; | |
2435 | long pid; | |
2436 | int cursig; | |
2437 | const void *greg; | |
2438 | ||
2439 | va_start (ap, note_type); | |
2440 | memset (data, 0, 72); | |
2441 | pid = va_arg (ap, long); | |
2442 | bfd_put_32 (abfd, pid, data + 24); | |
2443 | cursig = va_arg (ap, int); | |
2444 | bfd_put_16 (abfd, cursig, data + 12); | |
2445 | greg = va_arg (ap, const void *); | |
2446 | memcpy (data + 72, greg, 192); | |
2447 | memset (data + 264, 0, 4); | |
2448 | va_end (ap); | |
2449 | return elfcore_write_note (abfd, buf, bufsiz, | |
2450 | "CORE", note_type, data, sizeof (data)); | |
2451 | } | |
2452 | } | |
2453 | } | |
2454 | ||
b9c361e0 | 2455 | static flagword |
68ffbac6 | 2456 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2457 | { |
2458 | ||
2459 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2460 | return SHF_PPC_VLE; | |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | ||
25dbc73a AM |
2465 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2466 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2467 | |
25dbc73a AM |
2468 | static bfd_vma |
2469 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2470 | const asection *plt ATTRIBUTE_UNUSED, | |
2471 | const arelent *rel) | |
2472 | { | |
2473 | return rel->address; | |
2474 | } | |
deaaf2f3 | 2475 | |
25dbc73a | 2476 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2477 | is called when bfd_section_from_shdr finds a section with an unknown |
2478 | type. */ | |
deaaf2f3 | 2479 | |
25dbc73a | 2480 | static bfd_boolean |
6dc132d9 L |
2481 | ppc_elf_section_from_shdr (bfd *abfd, |
2482 | Elf_Internal_Shdr *hdr, | |
2483 | const char *name, | |
2484 | int shindex) | |
25dbc73a AM |
2485 | { |
2486 | asection *newsect; | |
2487 | flagword flags; | |
d1c6de6f | 2488 | |
6dc132d9 | 2489 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2490 | return FALSE; |
deaaf2f3 | 2491 | |
25dbc73a AM |
2492 | newsect = hdr->bfd_section; |
2493 | flags = bfd_get_section_flags (abfd, newsect); | |
2494 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2495 | flags |= SEC_EXCLUDE; | |
9abc968f | 2496 | |
25dbc73a AM |
2497 | if (hdr->sh_type == SHT_ORDERED) |
2498 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2499 | |
25dbc73a AM |
2500 | bfd_set_section_flags (abfd, newsect, flags); |
2501 | return TRUE; | |
2502 | } | |
2503 | ||
2504 | /* Set up any other section flags and such that may be necessary. */ | |
2505 | ||
2506 | static bfd_boolean | |
2507 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2508 | Elf_Internal_Shdr *shdr, | |
2509 | asection *asect) | |
2510 | { | |
25dbc73a AM |
2511 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2512 | shdr->sh_type = SHT_ORDERED; | |
2513 | ||
2514 | return TRUE; | |
2515 | } | |
2516 | ||
2517 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2518 | need to bump up the number of section headers. */ | |
2519 | ||
2520 | static int | |
a6b96beb AM |
2521 | ppc_elf_additional_program_headers (bfd *abfd, |
2522 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2523 | { |
2524 | asection *s; | |
2525 | int ret = 0; | |
d1c6de6f | 2526 | |
25dbc73a AM |
2527 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2528 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2529 | ++ret; | |
d1c6de6f | 2530 | |
25dbc73a AM |
2531 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2532 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2533 | ++ret; | |
deaaf2f3 | 2534 | |
25dbc73a AM |
2535 | return ret; |
2536 | } | |
deaaf2f3 | 2537 | |
68ffbac6 | 2538 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2539 | |
2540 | bfd_boolean | |
2541 | ppc_elf_modify_segment_map (bfd *abfd, | |
2542 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2543 | { | |
f7d69005 | 2544 | struct elf_segment_map *m; |
b9c361e0 JL |
2545 | |
2546 | /* At this point in the link, output sections have already been sorted by | |
2547 | LMA and assigned to segments. All that is left to do is to ensure | |
2548 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2549 | If we find that case, we split the segment. | |
2550 | We maintain the original output section order. */ | |
2551 | ||
12bd6957 | 2552 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 2553 | { |
f7d69005 AM |
2554 | struct elf_segment_map *n; |
2555 | bfd_size_type amt; | |
2556 | unsigned int j, k; | |
2557 | unsigned int p_flags; | |
2558 | ||
2559 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
2560 | continue; |
2561 | ||
f7d69005 | 2562 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 2563 | { |
f7d69005 AM |
2564 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2565 | p_flags |= PF_W; | |
2566 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2567 | { | |
2568 | p_flags |= PF_X; | |
2569 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2570 | p_flags |= PF_PPC_VLE; | |
2571 | break; | |
2572 | } | |
2573 | } | |
2574 | if (j != m->count) | |
2575 | while (++j != m->count) | |
2576 | { | |
2577 | unsigned int p_flags1 = PF_R; | |
94caa966 | 2578 | |
f7d69005 AM |
2579 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2580 | p_flags1 |= PF_W; | |
2581 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2582 | { | |
2583 | p_flags1 |= PF_X; | |
2584 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2585 | p_flags1 |= PF_PPC_VLE; | |
2586 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
2587 | break; | |
2588 | } | |
2589 | p_flags |= p_flags1; | |
2590 | } | |
2591 | /* If we're splitting a segment which originally contained rw | |
2592 | sections then those sections might now only be in one of the | |
2593 | two parts. So always set p_flags if splitting, even if we | |
2594 | are being called for objcopy with p_flags_valid set. */ | |
2595 | if (j != m->count || !m->p_flags_valid) | |
2596 | { | |
2597 | m->p_flags_valid = 1; | |
2598 | m->p_flags = p_flags; | |
2599 | } | |
2600 | if (j == m->count) | |
b9c361e0 JL |
2601 | continue; |
2602 | ||
f7d69005 | 2603 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
2604 | the remainder are put in a new segment. |
2605 | The scan resumes with the new segment. */ | |
2606 | ||
b9c361e0 JL |
2607 | amt = sizeof (struct elf_segment_map); |
2608 | amt += (m->count - j - 1) * sizeof (asection *); | |
2609 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2610 | if (n == NULL) | |
954b63d4 | 2611 | return FALSE; |
b9c361e0 JL |
2612 | |
2613 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
2614 | n->count = m->count - j; |
2615 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
2616 | n->sections[k] = m->sections[j + k]; |
2617 | m->count = j; | |
2618 | m->p_size_valid = 0; | |
b9c361e0 JL |
2619 | n->next = m->next; |
2620 | m->next = n; | |
b9c361e0 JL |
2621 | } |
2622 | ||
2623 | return TRUE; | |
2624 | } | |
2625 | ||
25dbc73a AM |
2626 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2627 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2628 | that the linker doesn't crater when trying to make more than | |
2629 | 2 sections. */ | |
e656e369 | 2630 | |
b35d266b | 2631 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2632 | { |
14b57c7c AM |
2633 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2634 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2635 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2636 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2637 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2638 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2639 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
2640 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2641 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2642 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2643 | }; |
2644 | ||
551b43fd AM |
2645 | /* This is what we want for new plt/got. */ |
2646 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 2647 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2648 | |
2649 | static const struct bfd_elf_special_section * | |
4aef7643 | 2650 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 2651 | { |
b35d266b | 2652 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2653 | |
2654 | /* See if this is one of the special sections. */ | |
2655 | if (sec->name == NULL) | |
2656 | return NULL; | |
2657 | ||
2658 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2659 | sec->use_rela_p); | |
2660 | if (ssect != NULL) | |
2661 | { | |
2662 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2663 | ssect = &ppc_alt_plt; | |
2664 | return ssect; | |
2665 | } | |
2666 | ||
2667 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2668 | } | |
25dbc73a AM |
2669 | \f |
2670 | /* Very simple linked list structure for recording apuinfo values. */ | |
2671 | typedef struct apuinfo_list | |
2672 | { | |
2673 | struct apuinfo_list *next; | |
2674 | unsigned long value; | |
2675 | } | |
2676 | apuinfo_list; | |
e656e369 | 2677 | |
25dbc73a | 2678 | static apuinfo_list *head; |
f2faa800 | 2679 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2680 | |
25dbc73a AM |
2681 | static void |
2682 | apuinfo_list_init (void) | |
2683 | { | |
2684 | head = NULL; | |
f2faa800 | 2685 | apuinfo_set = FALSE; |
25dbc73a | 2686 | } |
9abc968f | 2687 | |
25dbc73a AM |
2688 | static void |
2689 | apuinfo_list_add (unsigned long value) | |
2690 | { | |
2691 | apuinfo_list *entry = head; | |
deaaf2f3 | 2692 | |
25dbc73a AM |
2693 | while (entry != NULL) |
2694 | { | |
2695 | if (entry->value == value) | |
2696 | return; | |
2697 | entry = entry->next; | |
2698 | } | |
b4a38de6 | 2699 | |
25dbc73a AM |
2700 | entry = bfd_malloc (sizeof (* entry)); |
2701 | if (entry == NULL) | |
2702 | return; | |
e656e369 | 2703 | |
25dbc73a AM |
2704 | entry->value = value; |
2705 | entry->next = head; | |
2706 | head = entry; | |
2707 | } | |
9abc968f | 2708 | |
25dbc73a AM |
2709 | static unsigned |
2710 | apuinfo_list_length (void) | |
2711 | { | |
2712 | apuinfo_list *entry; | |
2713 | unsigned long count; | |
9abc968f | 2714 | |
25dbc73a AM |
2715 | for (entry = head, count = 0; |
2716 | entry; | |
2717 | entry = entry->next) | |
2718 | ++ count; | |
e656e369 | 2719 | |
25dbc73a AM |
2720 | return count; |
2721 | } | |
eea6121a | 2722 | |
25dbc73a AM |
2723 | static inline unsigned long |
2724 | apuinfo_list_element (unsigned long number) | |
2725 | { | |
2726 | apuinfo_list * entry; | |
e656e369 | 2727 | |
25dbc73a AM |
2728 | for (entry = head; |
2729 | entry && number --; | |
2730 | entry = entry->next) | |
2731 | ; | |
252b5132 | 2732 | |
25dbc73a AM |
2733 | return entry ? entry->value : 0; |
2734 | } | |
2735 | ||
2736 | static void | |
2737 | apuinfo_list_finish (void) | |
2738 | { | |
2739 | apuinfo_list *entry; | |
2740 | ||
2741 | for (entry = head; entry;) | |
252b5132 | 2742 | { |
25dbc73a AM |
2743 | apuinfo_list *next = entry->next; |
2744 | free (entry); | |
2745 | entry = next; | |
2746 | } | |
9abc968f | 2747 | |
25dbc73a AM |
2748 | head = NULL; |
2749 | } | |
9abc968f | 2750 | |
25dbc73a AM |
2751 | /* Scan the input BFDs and create a linked list of |
2752 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2753 | |
25dbc73a AM |
2754 | static void |
2755 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2756 | { | |
2757 | bfd *ibfd; | |
2758 | asection *asec; | |
deddc40b NS |
2759 | char *buffer = NULL; |
2760 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2761 | unsigned i; |
25dbc73a AM |
2762 | unsigned long length; |
2763 | const char *error_message = NULL; | |
9abc968f | 2764 | |
25dbc73a AM |
2765 | if (link_info == NULL) |
2766 | return; | |
9abc968f | 2767 | |
25dbc73a | 2768 | apuinfo_list_init (); |
252b5132 | 2769 | |
25dbc73a | 2770 | /* Read in the input sections contents. */ |
c72f2fb2 | 2771 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2772 | { |
25dbc73a | 2773 | unsigned long datum; |
252b5132 | 2774 | |
25dbc73a AM |
2775 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2776 | if (asec == NULL) | |
2777 | continue; | |
252b5132 | 2778 | |
695344c0 | 2779 | /* xgettext:c-format */ |
871b3ab2 | 2780 | error_message = _("corrupt %s section in %pB"); |
25dbc73a | 2781 | length = asec->size; |
deddc40b NS |
2782 | if (length < 20) |
2783 | goto fail; | |
2784 | ||
f2faa800 | 2785 | apuinfo_set = TRUE; |
deddc40b | 2786 | if (largest_input_size < asec->size) |
25dbc73a | 2787 | { |
deddc40b NS |
2788 | if (buffer) |
2789 | free (buffer); | |
2790 | largest_input_size = asec->size; | |
2791 | buffer = bfd_malloc (largest_input_size); | |
2792 | if (!buffer) | |
2793 | return; | |
25dbc73a | 2794 | } |
5b914448 | 2795 | |
25dbc73a | 2796 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2797 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 2798 | { |
695344c0 | 2799 | /* xgettext:c-format */ |
871b3ab2 | 2800 | error_message = _("unable to read in %s section from %pB"); |
25dbc73a AM |
2801 | goto fail; |
2802 | } | |
252b5132 | 2803 | |
25dbc73a AM |
2804 | /* Verify the contents of the header. Note - we have to |
2805 | extract the values this way in order to allow for a | |
2806 | host whose endian-ness is different from the target. */ | |
deddc40b | 2807 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2808 | if (datum != sizeof APUINFO_LABEL) |
2809 | goto fail; | |
252b5132 | 2810 | |
deddc40b | 2811 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2812 | if (datum != 0x2) |
2813 | goto fail; | |
252b5132 | 2814 | |
deddc40b | 2815 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2816 | goto fail; |
252b5132 | 2817 | |
25dbc73a | 2818 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2819 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2820 | if (datum + 20 != length) |
2821 | goto fail; | |
2822 | ||
25dbc73a AM |
2823 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2824 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2825 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2826 | } |
2827 | ||
25dbc73a | 2828 | error_message = NULL; |
252b5132 | 2829 | |
f2faa800 | 2830 | if (apuinfo_set) |
deddc40b | 2831 | { |
f2faa800 NS |
2832 | /* Compute the size of the output section. */ |
2833 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2834 | |
deddc40b NS |
2835 | /* Set the output section size, if it exists. */ |
2836 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2837 | |
deddc40b NS |
2838 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2839 | { | |
2840 | ibfd = abfd; | |
695344c0 | 2841 | /* xgettext:c-format */ |
871b3ab2 | 2842 | error_message = _("warning: unable to set size of %s section in %pB"); |
deddc40b NS |
2843 | } |
2844 | } | |
25dbc73a AM |
2845 | |
2846 | fail: | |
deddc40b NS |
2847 | if (buffer) |
2848 | free (buffer); | |
25dbc73a AM |
2849 | |
2850 | if (error_message) | |
cd9af601 | 2851 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 2852 | } |
252b5132 | 2853 | |
25dbc73a AM |
2854 | /* Prevent the output section from accumulating the input sections' |
2855 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2856 | |
25dbc73a AM |
2857 | static bfd_boolean |
2858 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2859 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2860 | asection *asec, |
2861 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2862 | { | |
f2faa800 | 2863 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2864 | } |
2865 | ||
25dbc73a AM |
2866 | /* Finally we can generate the output section. */ |
2867 | ||
2868 | static void | |
2869 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2870 | { |
25dbc73a AM |
2871 | bfd_byte *buffer; |
2872 | asection *asec; | |
2873 | unsigned i; | |
2874 | unsigned num_entries; | |
2875 | bfd_size_type length; | |
7619e7c7 | 2876 | |
25dbc73a AM |
2877 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2878 | if (asec == NULL) | |
2879 | return; | |
2880 | ||
f2faa800 | 2881 | if (!apuinfo_set) |
25dbc73a AM |
2882 | return; |
2883 | ||
2884 | length = asec->size; | |
2885 | if (length < 20) | |
2886 | return; | |
2887 | ||
2888 | buffer = bfd_malloc (length); | |
2889 | if (buffer == NULL) | |
7619e7c7 | 2890 | { |
4eca0228 | 2891 | _bfd_error_handler |
cf97bcb0 | 2892 | (_("failed to allocate space for new APUinfo section")); |
25dbc73a | 2893 | return; |
7619e7c7 | 2894 | } |
7619e7c7 | 2895 | |
25dbc73a AM |
2896 | /* Create the apuinfo header. */ |
2897 | num_entries = apuinfo_list_length (); | |
2898 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2899 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2900 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2901 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2902 | |
25dbc73a AM |
2903 | length = 20; |
2904 | for (i = 0; i < num_entries; i++) | |
feee612b | 2905 | { |
25dbc73a AM |
2906 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2907 | length += 4; | |
feee612b | 2908 | } |
feee612b | 2909 | |
25dbc73a | 2910 | if (length != asec->size) |
cf97bcb0 | 2911 | _bfd_error_handler (_("failed to compute new APUinfo section")); |
252b5132 | 2912 | |
25dbc73a | 2913 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
cf97bcb0 | 2914 | _bfd_error_handler (_("failed to install new APUinfo section")); |
252b5132 | 2915 | |
25dbc73a AM |
2916 | free (buffer); |
2917 | ||
2918 | apuinfo_list_finish (); | |
252b5132 | 2919 | } |
25dbc73a | 2920 | \f |
7382d32a | 2921 | static bfd_boolean |
c6dd29ce | 2922 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2923 | { |
407aa07c | 2924 | bfd_byte buf[4 * 4]; |
7382d32a | 2925 | |
9e390558 | 2926 | if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) |
7382d32a AM |
2927 | return FALSE; |
2928 | ||
c6dd29ce AM |
2929 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2930 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
407aa07c AM |
2931 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 |
2932 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2933 | } |
2934 | ||
468392fb AM |
2935 | static bfd_boolean |
2936 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2937 | { | |
2938 | bfd_vma vma = *(bfd_vma *) ptr; | |
2939 | return ((section->flags & SEC_ALLOC) != 0 | |
2940 | && section->vma <= vma | |
2941 | && vma < section->vma + section->size); | |
2942 | } | |
2943 | ||
2944 | static long | |
2945 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2946 | long dynsymcount, asymbol **dynsyms, | |
2947 | asymbol **ret) | |
2948 | { | |
2949 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2950 | asection *plt, *relplt, *dynamic, *glink; | |
2951 | bfd_vma glink_vma = 0; | |
2952 | bfd_vma resolv_vma = 0; | |
9e390558 | 2953 | bfd_vma stub_off; |
468392fb AM |
2954 | asymbol *s; |
2955 | arelent *p; | |
9e390558 | 2956 | long count, i, stub_delta; |
468392fb AM |
2957 | size_t size; |
2958 | char *names; | |
2959 | bfd_byte buf[4]; | |
2960 | ||
2961 | *ret = NULL; | |
2962 | ||
2963 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2964 | return 0; | |
2965 | ||
2966 | if (dynsymcount <= 0) | |
2967 | return 0; | |
2968 | ||
2969 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2970 | if (relplt == NULL) | |
2971 | return 0; | |
2972 | ||
2973 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2974 | if (plt == NULL) | |
2975 | return 0; | |
2976 | ||
2977 | /* Call common code to handle old-style executable PLTs. */ | |
2978 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2979 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2980 | dynsymcount, dynsyms, ret); | |
2981 | ||
2982 | /* If this object was prelinked, the prelinker stored the address | |
2983 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2984 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2985 | if (dynamic != NULL) | |
2986 | { | |
2987 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2988 | size_t extdynsize; | |
2989 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2990 | ||
2991 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2992 | return -1; | |
2993 | ||
2994 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2995 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2996 | ||
2997 | extdyn = dynbuf; | |
2998 | extdynend = extdyn + dynamic->size; | |
2999 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3000 | { | |
3001 | Elf_Internal_Dyn dyn; | |
3002 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3003 | ||
3004 | if (dyn.d_tag == DT_NULL) | |
3005 | break; | |
3006 | ||
3007 | if (dyn.d_tag == DT_PPC_GOT) | |
3008 | { | |
3009 | unsigned int g_o_t = dyn.d_un.d_val; | |
3010 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
3011 | if (got != NULL | |
3012 | && bfd_get_section_contents (abfd, got, buf, | |
3013 | g_o_t - got->vma + 4, 4)) | |
3014 | glink_vma = bfd_get_32 (abfd, buf); | |
3015 | break; | |
3016 | } | |
3017 | } | |
3018 | free (dynbuf); | |
3019 | } | |
3020 | ||
3021 | /* Otherwise we read the first plt entry. */ | |
3022 | if (glink_vma == 0) | |
3023 | { | |
3024 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
3025 | glink_vma = bfd_get_32 (abfd, buf); | |
3026 | } | |
3027 | ||
3028 | if (glink_vma == 0) | |
3029 | return 0; | |
3030 | ||
3031 | /* The .glink section usually does not survive the final | |
3032 | link; search for the section (usually .text) where the | |
3033 | glink stubs now reside. */ | |
3034 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
3035 | if (glink == NULL) | |
3036 | return 0; | |
3037 | ||
3038 | /* Determine glink PLT resolver by reading the relative branch | |
3039 | from the first glink stub. */ | |
3040 | if (bfd_get_section_contents (abfd, glink, buf, | |
3041 | glink_vma - glink->vma, 4)) | |
3042 | { | |
3043 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3044 | ||
3045 | /* The first glink stub may either branch to the resolver ... */ | |
3046 | insn ^= B; | |
3047 | if ((insn & ~0x3fffffc) == 0) | |
3048 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
3049 | ||
3050 | /* ... or fall through a bunch of NOPs. */ | |
3051 | else if ((insn ^ B ^ NOP) == 0) | |
3052 | for (i = 4; | |
3053 | bfd_get_section_contents (abfd, glink, buf, | |
3054 | glink_vma - glink->vma + i, 4); | |
3055 | i += 4) | |
3056 | if (bfd_get_32 (abfd, buf) != NOP) | |
3057 | { | |
3058 | resolv_vma = glink_vma + i; | |
3059 | break; | |
3060 | } | |
3061 | } | |
3062 | ||
7382d32a | 3063 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
3064 | /* If the stubs are those for -shared/-pie then we might have |
3065 | multiple stubs for each plt entry. If that is the case then | |
3066 | there is no way to associate stubs with their plt entries short | |
9e390558 AM |
3067 | of figuring out the GOT pointer value used in the stub. |
3068 | The offsets tested here need to cover all possible values of | |
3069 | GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */ | |
3070 | stub_off = glink_vma - glink->vma; | |
3071 | for (stub_delta = 16; stub_delta <= 32; stub_delta += 8) | |
3072 | if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta)) | |
3073 | break; | |
3074 | if (stub_delta > 32) | |
7382d32a AM |
3075 | return 0; |
3076 | ||
468392fb AM |
3077 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
3078 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
3079 | return -1; | |
3080 | ||
468392fb AM |
3081 | size = count * sizeof (asymbol); |
3082 | p = relplt->relocation; | |
3083 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
3084 | { |
3085 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3086 | if (p->addend != 0) | |
3087 | size += sizeof ("+0x") - 1 + 8; | |
3088 | } | |
468392fb AM |
3089 | |
3090 | size += sizeof (asymbol) + sizeof ("__glink"); | |
3091 | ||
3092 | if (resolv_vma) | |
3093 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
3094 | ||
3095 | s = *ret = bfd_malloc (size); | |
3096 | if (s == NULL) | |
3097 | return -1; | |
3098 | ||
9e390558 | 3099 | stub_off = glink_vma - glink->vma; |
468392fb | 3100 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
3101 | p = relplt->relocation + count - 1; |
3102 | for (i = 0; i < count; i++) | |
468392fb AM |
3103 | { |
3104 | size_t len; | |
3105 | ||
9e390558 AM |
3106 | stub_off -= stub_delta; |
3107 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
3108 | stub_off -= 32; | |
468392fb AM |
3109 | *s = **p->sym_ptr_ptr; |
3110 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3111 | we are defining a symbol, ensure one of them is set. */ | |
3112 | if ((s->flags & BSF_LOCAL) == 0) | |
3113 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3114 | s->flags |= BSF_SYNTHETIC; |
468392fb | 3115 | s->section = glink; |
9e390558 | 3116 | s->value = stub_off; |
468392fb AM |
3117 | s->name = names; |
3118 | s->udata.p = NULL; | |
3119 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3120 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3121 | names += len; | |
e054468f AM |
3122 | if (p->addend != 0) |
3123 | { | |
3124 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3125 | names += sizeof ("+0x") - 1; | |
3126 | bfd_sprintf_vma (abfd, names, p->addend); | |
3127 | names += strlen (names); | |
3128 | } | |
468392fb AM |
3129 | memcpy (names, "@plt", sizeof ("@plt")); |
3130 | names += sizeof ("@plt"); | |
3131 | ++s; | |
1079403c | 3132 | --p; |
468392fb AM |
3133 | } |
3134 | ||
3135 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 3136 | memset (s, 0, sizeof *s); |
468392fb | 3137 | s->the_bfd = abfd; |
6ba2a415 | 3138 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3139 | s->section = glink; |
3140 | s->value = glink_vma - glink->vma; | |
3141 | s->name = names; | |
3142 | memcpy (names, "__glink", sizeof ("__glink")); | |
3143 | names += sizeof ("__glink"); | |
3144 | s++; | |
3145 | count++; | |
3146 | ||
3147 | if (resolv_vma) | |
3148 | { | |
3149 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3150 | memset (s, 0, sizeof *s); |
468392fb | 3151 | s->the_bfd = abfd; |
6ba2a415 | 3152 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3153 | s->section = glink; |
3154 | s->value = resolv_vma - glink->vma; | |
3155 | s->name = names; | |
3156 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3157 | names += sizeof ("__glink_PLTresolve"); | |
3158 | s++; | |
3159 | count++; | |
3160 | } | |
3161 | ||
3162 | return count; | |
3163 | } | |
3164 | \f | |
25dbc73a AM |
3165 | /* The following functions are specific to the ELF linker, while |
3166 | functions above are used generally. They appear in this file more | |
3167 | or less in the order in which they are called. eg. | |
3168 | ppc_elf_check_relocs is called early in the link process, | |
3169 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3170 | called. */ | |
252b5132 | 3171 | |
a6aa5195 | 3172 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3173 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3174 | struct plt_entry |
3175 | { | |
3176 | struct plt_entry *next; | |
3177 | ||
3178 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3179 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3180 | GOT pointer reg. It will always be at least 32768. (Current |
3181 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3182 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3183 | bfd_vma addend; |
3184 | ||
3185 | /* The .got2 section. */ | |
3186 | asection *sec; | |
3187 | ||
3188 | /* PLT refcount or offset. */ | |
3189 | union | |
3190 | { | |
3191 | bfd_signed_vma refcount; | |
3192 | bfd_vma offset; | |
3193 | } plt; | |
3194 | ||
3195 | /* .glink stub offset. */ | |
3196 | bfd_vma glink_offset; | |
3197 | }; | |
3198 | ||
7c8bbca5 AM |
3199 | /* Of those relocs that might be copied as dynamic relocs, this |
3200 | function selects those that must be copied when linking a shared | |
3201 | library or PIE, even when the symbol is local. */ | |
252b5132 | 3202 | |
1d483afe AM |
3203 | static int |
3204 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3205 | enum elf_ppc_reloc_type r_type) | |
3206 | { | |
3207 | switch (r_type) | |
3208 | { | |
3209 | default: | |
7c8bbca5 AM |
3210 | /* Only relative relocs can be resolved when the object load |
3211 | address isn't fixed. DTPREL32 is excluded because the | |
3212 | dynamic linker needs to differentiate global dynamic from | |
3213 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
3214 | return 1; |
3215 | ||
3216 | case R_PPC_REL24: | |
3217 | case R_PPC_REL14: | |
3218 | case R_PPC_REL14_BRTAKEN: | |
3219 | case R_PPC_REL14_BRNTAKEN: | |
3220 | case R_PPC_REL32: | |
3221 | return 0; | |
3222 | ||
3223 | case R_PPC_TPREL32: | |
3224 | case R_PPC_TPREL16: | |
3225 | case R_PPC_TPREL16_LO: | |
3226 | case R_PPC_TPREL16_HI: | |
3227 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
3228 | /* These relocations are relative but in a shared library the |
3229 | linker doesn't know the thread pointer base. */ | |
3230 | return bfd_link_dll (info); | |
1d483afe AM |
3231 | } |
3232 | } | |
252b5132 | 3233 | |
25dbc73a AM |
3234 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3235 | copying dynamic variables from a shared lib into an app's dynbss | |
3236 | section, and instead use a dynamic relocation to point into the | |
3237 | shared lib. */ | |
3238 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3239 | |
f95f8542 AM |
3240 | /* Used to track dynamic relocations for local symbols. */ |
3241 | struct ppc_dyn_relocs | |
3242 | { | |
3243 | struct ppc_dyn_relocs *next; | |
3244 | ||
3245 | /* The input section of the reloc. */ | |
3246 | asection *sec; | |
3247 | ||
3248 | /* Total number of relocs copied for the input section. */ | |
3249 | unsigned int count : 31; | |
3250 | ||
3251 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3252 | unsigned int ifunc : 1; | |
3253 | }; | |
3254 | ||
25dbc73a | 3255 | /* PPC ELF linker hash entry. */ |
252b5132 | 3256 | |
25dbc73a AM |
3257 | struct ppc_elf_link_hash_entry |
3258 | { | |
3259 | struct elf_link_hash_entry elf; | |
252b5132 | 3260 | |
25dbc73a AM |
3261 | /* If this symbol is used in the linker created sections, the processor |
3262 | specific backend uses this field to map the field into the offset | |
3263 | from the beginning of the section. */ | |
3264 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3265 | |
25dbc73a | 3266 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3267 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3268 | |
37da22e5 AM |
3269 | /* Contexts in which symbol is used in the GOT. |
3270 | Bits are or'd into the mask as the corresponding relocs are | |
3271 | encountered during check_relocs, with TLS_TLS being set when any | |
3272 | of the other TLS bits are set. tls_optimize clears bits when | |
3273 | optimizing to indicate the corresponding GOT entry type is not | |
3274 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
3275 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
3276 | separate flag rather than setting TPREL just for convenience in | |
3277 | distinguishing the two cases. | |
3278 | These flags are also kept for local symbols. */ | |
3279 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3280 | #define TLS_GD 2 /* GD reloc. */ | |
3281 | #define TLS_LD 4 /* LD reloc. */ | |
3282 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3283 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3284 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
3285 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
bac3c8c5 | 3286 | unsigned char tls_mask; |
4dc4a9a5 | 3287 | |
37da22e5 AM |
3288 | /* The above field is also used to mark function symbols. In which |
3289 | case TLS_TLS will be 0. */ | |
3290 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3291 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 AM |
3292 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
3293 | ||
4dc4a9a5 DJ |
3294 | /* Nonzero if we have seen a small data relocation referring to this |
3295 | symbol. */ | |
d3e454b9 AM |
3296 | unsigned char has_sda_refs : 1; |
3297 | ||
3298 | /* Flag use of given relocations. */ | |
3299 | unsigned char has_addr16_ha : 1; | |
3300 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 3301 | }; |
252b5132 | 3302 | |
25dbc73a AM |
3303 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3304 | ||
3305 | /* PPC ELF linker hash table. */ | |
3306 | ||
3307 | struct ppc_elf_link_hash_table | |
3308 | { | |
3309 | struct elf_link_hash_table elf; | |
3310 | ||
5446cbdf AM |
3311 | /* Various options passed from the linker. */ |
3312 | struct ppc_elf_params *params; | |
3313 | ||
25dbc73a | 3314 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 3315 | asection *glink; |
25dbc73a AM |
3316 | asection *dynsbss; |
3317 | asection *relsbss; | |
c9a2f333 | 3318 | elf_linker_section_t sdata[2]; |
25dbc73a | 3319 | asection *sbss; |
6177242a | 3320 | asection *glink_eh_frame; |
2d7ad24e AM |
3321 | asection *pltlocal; |
3322 | asection *relpltlocal; | |
25dbc73a | 3323 | |
016687f8 AM |
3324 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3325 | asection *srelplt2; | |
3326 | ||
1d483afe | 3327 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3328 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3329 | |
016687f8 AM |
3330 | /* The bfd that forced an old-style PLT. */ |
3331 | bfd *old_bfd; | |
5b914448 | 3332 | |
25dbc73a AM |
3333 | /* TLS local dynamic got entry handling. */ |
3334 | union { | |
3335 | bfd_signed_vma refcount; | |
3336 | bfd_vma offset; | |
3337 | } tlsld_got; | |
252b5132 | 3338 | |
c6dd29ce | 3339 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3340 | bfd_vma glink_pltresolve; |
3341 | ||
3b36f7e6 AM |
3342 | /* Size of reserved GOT entries. */ |
3343 | unsigned int got_header_size; | |
3344 | /* Non-zero if allocating the header left a gap. */ | |
3345 | unsigned int got_gap; | |
3346 | ||
4a3dc543 RS |
3347 | /* The type of PLT we have chosen to use. */ |
3348 | enum ppc_elf_plt_type plt_type; | |
3349 | ||
9d8504b1 | 3350 | /* True if the target system is VxWorks. */ |
016687f8 | 3351 | unsigned int is_vxworks:1; |
9d8504b1 | 3352 | |
82e66161 AM |
3353 | /* Whether there exist local gnu indirect function resolvers, |
3354 | referenced by dynamic relocations. */ | |
3355 | unsigned int local_ifunc_resolver:1; | |
3356 | unsigned int maybe_local_ifunc_resolver:1; | |
3357 | ||
9a23f96e AM |
3358 | /* Set if tls optimization is enabled. */ |
3359 | unsigned int do_tls_opt:1; | |
3360 | ||
3e04d765 AM |
3361 | /* Set if inline plt calls should be converted to direct calls. */ |
3362 | unsigned int can_convert_all_inline_plt:1; | |
3363 | ||
9d8504b1 PB |
3364 | /* The size of PLT entries. */ |
3365 | int plt_entry_size; | |
3366 | /* The distance between adjacent PLT slots. */ | |
3367 | int plt_slot_size; | |
3368 | /* The size of the first PLT entry. */ | |
3369 | int plt_initial_entry_size; | |
016687f8 | 3370 | |
87d72d41 AM |
3371 | /* Small local sym cache. */ |
3372 | struct sym_cache sym_cache; | |
25dbc73a | 3373 | }; |
252b5132 | 3374 | |
94caa966 AM |
3375 | /* Rename some of the generic section flags to better document how they |
3376 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3377 | ||
3378 | /* Nonzero if this section has TLS related relocations. */ | |
3379 | #define has_tls_reloc sec_flg0 | |
3380 | ||
3381 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3382 | #define has_tls_get_addr_call sec_flg1 | |
3383 | ||
3e04d765 AM |
3384 | /* Flag set when PLTCALL relocs are detected. */ |
3385 | #define has_pltcall sec_flg2 | |
3386 | ||
25dbc73a | 3387 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3388 | |
25dbc73a | 3389 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3390 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3391 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3392 | |
25dbc73a | 3393 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3394 | |
25dbc73a AM |
3395 | static struct bfd_hash_entry * |
3396 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3397 | struct bfd_hash_table *table, | |
3398 | const char *string) | |
252b5132 | 3399 | { |
25dbc73a AM |
3400 | /* Allocate the structure if it has not already been allocated by a |
3401 | subclass. */ | |
3402 | if (entry == NULL) | |
3403 | { | |
3404 | entry = bfd_hash_allocate (table, | |
3405 | sizeof (struct ppc_elf_link_hash_entry)); | |
3406 | if (entry == NULL) | |
3407 | return entry; | |
3408 | } | |
252b5132 | 3409 | |
25dbc73a AM |
3410 | /* Call the allocation method of the superclass. */ |
3411 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3412 | if (entry != NULL) | |
3413 | { | |
3414 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3415 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3416 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3417 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3418 | } |
252b5132 | 3419 | |
25dbc73a | 3420 | return entry; |
252b5132 | 3421 | } |
3dab13f6 | 3422 | |
25dbc73a | 3423 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3424 | |
25dbc73a AM |
3425 | static struct bfd_link_hash_table * |
3426 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3427 | { |
25dbc73a | 3428 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 3429 | static struct ppc_elf_params default_params |
407aa07c | 3430 | = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 3431 | |
25dbc73a AM |
3432 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3433 | if (ret == NULL) | |
3434 | return NULL; | |
3dab13f6 | 3435 | |
66eb6687 AM |
3436 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3437 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3438 | sizeof (struct ppc_elf_link_hash_entry), |
3439 | PPC32_ELF_DATA)) | |
3dab13f6 | 3440 | { |
25dbc73a AM |
3441 | free (ret); |
3442 | return NULL; | |
3443 | } | |
58111eb7 | 3444 | |
a6aa5195 AM |
3445 | ret->elf.init_plt_refcount.refcount = 0; |
3446 | ret->elf.init_plt_refcount.glist = NULL; | |
3447 | ret->elf.init_plt_offset.offset = 0; | |
3448 | ret->elf.init_plt_offset.glist = NULL; | |
3449 | ||
db434ba0 AM |
3450 | ret->params = &default_params; |
3451 | ||
c9a2f333 AM |
3452 | ret->sdata[0].name = ".sdata"; |
3453 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3454 | ret->sdata[0].bss_name = ".sbss"; | |
3455 | ||
3456 | ret->sdata[1].name = ".sdata2"; | |
3457 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3458 | ret->sdata[1].bss_name = ".sbss2"; | |
3459 | ||
9d8504b1 PB |
3460 | ret->plt_entry_size = 12; |
3461 | ret->plt_slot_size = 8; | |
3462 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3463 | |
25dbc73a AM |
3464 | return &ret->elf.root; |
3465 | } | |
3dab13f6 | 3466 | |
5446cbdf AM |
3467 | /* Hook linker params into hash table. */ |
3468 | ||
3469 | void | |
3470 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3471 | { | |
3472 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3473 | ||
3474 | if (htab) | |
3475 | htab->params = params; | |
76e7a751 | 3476 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
3477 | } |
3478 | ||
9d8504b1 | 3479 | /* Create .got and the related sections. */ |
3dab13f6 | 3480 | |
25dbc73a AM |
3481 | static bfd_boolean |
3482 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3483 | { | |
3484 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3485 | |
25dbc73a AM |
3486 | if (!_bfd_elf_create_got_section (abfd, info)) |
3487 | return FALSE; | |
3dab13f6 | 3488 | |
25dbc73a | 3489 | htab = ppc_elf_hash_table (info); |
ce558b89 | 3490 | if (!htab->is_vxworks) |
9d8504b1 PB |
3491 | { |
3492 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3493 | executable. */ | |
ce558b89 AM |
3494 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
3495 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496 | if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags)) | |
9d8504b1 PB |
3497 | return FALSE; |
3498 | } | |
3dab13f6 | 3499 | |
25dbc73a AM |
3500 | return TRUE; |
3501 | } | |
3dab13f6 | 3502 | |
93d1b056 AM |
3503 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3504 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3505 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3506 | ||
3507 | static bfd_boolean | |
3508 | ppc_elf_create_linker_section (bfd *abfd, | |
3509 | struct bfd_link_info *info, | |
3510 | flagword flags, | |
3511 | elf_linker_section_t *lsect) | |
3512 | { | |
3513 | asection *s; | |
3514 | ||
3515 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3516 | | SEC_LINKER_CREATED); | |
3517 | ||
3518 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3519 | if (s == NULL) | |
3520 | return FALSE; | |
3521 | lsect->section = s; | |
3522 | ||
3523 | /* Define the sym on the first section of this name. */ | |
3524 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3525 | ||
3526 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3527 | if (lsect->sym == NULL) | |
3528 | return FALSE; | |
3529 | lsect->sym->root.u.def.value = 0x8000; | |
3530 | return TRUE; | |
3531 | } | |
3532 | ||
e054468f AM |
3533 | static bfd_boolean |
3534 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3535 | { | |
3536 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3537 | asection *s; | |
3538 | flagword flags; | |
691d2e9a | 3539 | int p2align; |
e054468f AM |
3540 | |
3541 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
3542 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3543 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
3544 | htab->glink = s; | |
691d2e9a AM |
3545 | p2align = htab->params->ppc476_workaround ? 6 : 4; |
3546 | if (p2align < htab->params->plt_stub_align) | |
3547 | p2align = htab->params->plt_stub_align; | |
e054468f | 3548 | if (s == NULL |
691d2e9a | 3549 | || !bfd_set_section_alignment (abfd, s, p2align)) |
e054468f AM |
3550 | return FALSE; |
3551 | ||
6177242a AM |
3552 | if (!info->no_ld_generated_unwind_info) |
3553 | { | |
3554 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3555 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3556 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3557 | htab->glink_eh_frame = s; | |
3558 | if (s == NULL | |
3559 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3560 | return FALSE; | |
3561 | } | |
3562 | ||
e054468f AM |
3563 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3564 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 3565 | htab->elf.iplt = s; |
e054468f AM |
3566 | if (s == NULL |
3567 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3568 | return FALSE; | |
3569 | ||
3570 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3571 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3572 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 3573 | htab->elf.irelplt = s; |
e054468f AM |
3574 | if (s == NULL |
3575 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3576 | return FALSE; | |
93d1b056 | 3577 | |
2d7ad24e AM |
3578 | /* Local plt entries. */ |
3579 | flags = (SEC_ALLOC | SEC_LOAD | |
3580 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3581 | htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt", | |
3582 | flags); | |
3583 | if (htab->pltlocal == NULL | |
3584 | || ! bfd_set_section_alignment (abfd, htab->pltlocal, 2)) | |
3585 | return FALSE; | |
3586 | ||
3587 | if (bfd_link_pic (info)) | |
3588 | { | |
3589 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3590 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3591 | htab->relpltlocal | |
3592 | = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags); | |
3593 | if (htab->relpltlocal == NULL | |
3594 | || ! bfd_set_section_alignment (abfd, htab->relpltlocal, 2)) | |
3595 | return FALSE; | |
3596 | } | |
3597 | ||
93d1b056 AM |
3598 | if (!ppc_elf_create_linker_section (abfd, info, 0, |
3599 | &htab->sdata[0])) | |
3600 | return FALSE; | |
3601 | ||
3602 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3603 | &htab->sdata[1])) | |
3604 | return FALSE; | |
3605 | ||
e054468f AM |
3606 | return TRUE; |
3607 | } | |
3608 | ||
25dbc73a AM |
3609 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3610 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3611 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3612 | |
25dbc73a AM |
3613 | static bfd_boolean |
3614 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3615 | { | |
3616 | struct ppc_elf_link_hash_table *htab; | |
3617 | asection *s; | |
3618 | flagword flags; | |
3dab13f6 | 3619 | |
25dbc73a | 3620 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3621 | |
ce558b89 | 3622 | if (htab->elf.sgot == NULL |
25dbc73a | 3623 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
3624 | return FALSE; |
3625 | ||
25dbc73a AM |
3626 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3627 | return FALSE; | |
3dab13f6 | 3628 | |
e054468f AM |
3629 | if (htab->glink == NULL |
3630 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3631 | return FALSE; |
3dab13f6 | 3632 | |
14b2f831 AM |
3633 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3634 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3635 | htab->dynsbss = s; |
3496cb2a | 3636 | if (s == NULL) |
25dbc73a | 3637 | return FALSE; |
3dab13f6 | 3638 | |
0e1862bb | 3639 | if (! bfd_link_pic (info)) |
25dbc73a | 3640 | { |
e054468f AM |
3641 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3642 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3643 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3644 | htab->relsbss = s; |
25dbc73a | 3645 | if (s == NULL |
25dbc73a AM |
3646 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3647 | return FALSE; | |
3648 | } | |
3dab13f6 | 3649 | |
711de32c RS |
3650 | if (htab->is_vxworks |
3651 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3652 | return FALSE; | |
9d8504b1 | 3653 | |
ce558b89 | 3654 | s = htab->elf.splt; |
3b36f7e6 | 3655 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3656 | if (htab->plt_type == PLT_VXWORKS) |
3657 | /* The VxWorks PLT is a loaded section with contents. */ | |
3658 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3659 | return bfd_set_section_flags (abfd, s, flags); |
3660 | } | |
3dab13f6 | 3661 | |
25dbc73a | 3662 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3663 | |
25dbc73a | 3664 | static void |
fcfa13d2 | 3665 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3666 | struct elf_link_hash_entry *dir, |
3667 | struct elf_link_hash_entry *ind) | |
3668 | { | |
3669 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3670 | |
25dbc73a AM |
3671 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3672 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3673 | |
c79d6685 AM |
3674 | edir->tls_mask |= eind->tls_mask; |
3675 | edir->has_sda_refs |= eind->has_sda_refs; | |
3676 | ||
e81830c5 AM |
3677 | if (edir->elf.versioned != versioned_hidden) |
3678 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
3679 | edir->elf.ref_regular |= eind->elf.ref_regular; |
3680 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3681 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
3682 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3683 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3684 | ||
287c7eaf AM |
3685 | /* If we were called to copy over info for a weak sym, that's all. */ |
3686 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3687 | return; | |
3688 | ||
25dbc73a AM |
3689 | if (eind->dyn_relocs != NULL) |
3690 | { | |
3691 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3692 | { |
6061a67d AM |
3693 | struct elf_dyn_relocs **pp; |
3694 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3695 | |
fcfa13d2 | 3696 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3697 | list. Merge any entries against the same section. */ |
3698 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3699 | { |
6061a67d | 3700 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3701 | |
3702 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3703 | if (q->sec == p->sec) | |
3704 | { | |
3705 | q->pc_count += p->pc_count; | |
3706 | q->count += p->count; | |
3707 | *pp = p->next; | |
3708 | break; | |
3709 | } | |
3710 | if (q == NULL) | |
3711 | pp = &p->next; | |
3dab13f6 | 3712 | } |
25dbc73a | 3713 | *pp = edir->dyn_relocs; |
3dab13f6 | 3714 | } |
25dbc73a AM |
3715 | |
3716 | edir->dyn_relocs = eind->dyn_relocs; | |
3717 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3718 | } |
3dab13f6 | 3719 | |
a6aa5195 AM |
3720 | /* Copy over the GOT refcount entries that we may have already seen to |
3721 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3722 | edir->elf.got.refcount += eind->elf.got.refcount; |
3723 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3724 | |
3725 | /* And plt entries. */ | |
3726 | if (eind->elf.plt.plist != NULL) | |
3727 | { | |
3728 | if (edir->elf.plt.plist != NULL) | |
3729 | { | |
3730 | struct plt_entry **entp; | |
3731 | struct plt_entry *ent; | |
3732 | ||
3733 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3734 | { | |
3735 | struct plt_entry *dent; | |
3736 | ||
3737 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3738 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3739 | { | |
3740 | dent->plt.refcount += ent->plt.refcount; | |
3741 | *entp = ent->next; | |
3742 | break; | |
3743 | } | |
3744 | if (dent == NULL) | |
3745 | entp = &ent->next; | |
3746 | } | |
3747 | *entp = edir->elf.plt.plist; | |
3748 | } | |
3749 | ||
3750 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3751 | eind->elf.plt.plist = NULL; | |
3752 | } | |
3753 | ||
fcfa13d2 | 3754 | if (eind->elf.dynindx != -1) |
25dbc73a | 3755 | { |
fcfa13d2 AM |
3756 | if (edir->elf.dynindx != -1) |
3757 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3758 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3759 | edir->elf.dynindx = eind->elf.dynindx; |
3760 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3761 | eind->elf.dynindx = -1; | |
3762 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3763 | } |
25dbc73a | 3764 | } |
3dab13f6 | 3765 | |
25dbc73a AM |
3766 | /* Hook called by the linker routine which adds symbols from an object |
3767 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3768 | |
25dbc73a AM |
3769 | static bfd_boolean |
3770 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3771 | struct bfd_link_info *info, | |
3772 | Elf_Internal_Sym *sym, | |
3773 | const char **namep ATTRIBUTE_UNUSED, | |
3774 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3775 | asection **secp, | |
3776 | bfd_vma *valp) | |
3777 | { | |
3778 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3779 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
3780 | && is_ppc_elf (info->output_bfd) |
3781 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3782 | { |
3783 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3784 | put into .sbss. */ | |
3785 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3786 | |
25dbc73a AM |
3787 | htab = ppc_elf_hash_table (info); |
3788 | if (htab->sbss == NULL) | |
3789 | { | |
644285ef | 3790 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3791 | |
644285ef AM |
3792 | if (!htab->elf.dynobj) |
3793 | htab->elf.dynobj = abfd; | |
3794 | ||
3496cb2a L |
3795 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3796 | ".sbss", | |
3797 | flags); | |
3798 | if (htab->sbss == NULL) | |
25dbc73a | 3799 | return FALSE; |
3dab13f6 | 3800 | } |
3dab13f6 | 3801 | |
25dbc73a AM |
3802 | *secp = htab->sbss; |
3803 | *valp = sym->st_size; | |
3804 | } | |
3dab13f6 | 3805 | |
25dbc73a | 3806 | return TRUE; |
3dab13f6 AM |
3807 | } |
3808 | \f | |
25dbc73a AM |
3809 | /* Find a linker generated pointer with a given addend and type. */ |
3810 | ||
3811 | static elf_linker_section_pointers_t * | |
3812 | elf_find_pointer_linker_section | |
3813 | (elf_linker_section_pointers_t *linker_pointers, | |
3814 | bfd_vma addend, | |
3815 | elf_linker_section_t *lsect) | |
252b5132 | 3816 | { |
25dbc73a AM |
3817 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3818 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3819 | return linker_pointers; | |
252b5132 | 3820 | |
25dbc73a AM |
3821 | return NULL; |
3822 | } | |
3823 | ||
3824 | /* Allocate a pointer to live in a linker created section. */ | |
3825 | ||
3826 | static bfd_boolean | |
93d1b056 AM |
3827 | elf_allocate_pointer_linker_section (bfd *abfd, |
3828 | elf_linker_section_t *lsect, | |
3829 | struct elf_link_hash_entry *h, | |
3830 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3831 | { |
3832 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3833 | elf_linker_section_pointers_t *linker_section_ptr; | |
3834 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3835 | bfd_size_type amt; | |
3836 | ||
3837 | BFD_ASSERT (lsect != NULL); | |
3838 | ||
3839 | /* Is this a global symbol? */ | |
3840 | if (h != NULL) | |
3841 | { | |
3842 | struct ppc_elf_link_hash_entry *eh; | |
3843 | ||
3844 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3845 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3846 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3847 | rel->r_addend, | |
3848 | lsect)) | |
3849 | return TRUE; | |
3850 | ||
3851 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3852 | } |
3853 | else | |
3854 | { | |
0c8d6e5c | 3855 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3856 | |
25dbc73a AM |
3857 | /* Allocation of a pointer to a local symbol. */ |
3858 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3859 | ||
3860 | /* Allocate a table to hold the local symbols if first time. */ | |
3861 | if (!ptr) | |
3862 | { | |
0ffa91dd | 3863 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3864 | |
3865 | amt = num_symbols; | |
3866 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3867 | ptr = bfd_zalloc (abfd, amt); | |
3868 | ||
3869 | if (!ptr) | |
3870 | return FALSE; | |
3871 | ||
3872 | elf_local_ptr_offsets (abfd) = ptr; | |
3873 | } | |
3874 | ||
3875 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3876 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3877 | rel->r_addend, | |
3878 | lsect)) | |
3879 | return TRUE; | |
252b5132 | 3880 | |
25dbc73a | 3881 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3882 | } |
41fcb14e | 3883 | |
25dbc73a AM |
3884 | /* Allocate space for a pointer in the linker section, and allocate |
3885 | a new pointer record from internal memory. */ | |
3886 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3887 | amt = sizeof (elf_linker_section_pointers_t); | |
3888 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3889 | |
25dbc73a | 3890 | if (!linker_section_ptr) |
7619e7c7 | 3891 | return FALSE; |
41fcb14e | 3892 | |
25dbc73a AM |
3893 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3894 | linker_section_ptr->addend = rel->r_addend; | |
3895 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3896 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3897 | |
93d1b056 AM |
3898 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3899 | return FALSE; | |
25dbc73a AM |
3900 | linker_section_ptr->offset = lsect->section->size; |
3901 | lsect->section->size += 4; | |
7619e7c7 | 3902 | |
25dbc73a AM |
3903 | #ifdef DEBUG |
3904 | fprintf (stderr, | |
3905 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3906 | lsect->name, (long) linker_section_ptr->offset, | |
3907 | (long) lsect->section->size); | |
3908 | #endif | |
7619e7c7 AM |
3909 | |
3910 | return TRUE; | |
41fcb14e AM |
3911 | } |
3912 | ||
e054468f | 3913 | static struct plt_entry ** |
25dbc73a AM |
3914 | update_local_sym_info (bfd *abfd, |
3915 | Elf_Internal_Shdr *symtab_hdr, | |
3916 | unsigned long r_symndx, | |
3917 | int tls_type) | |
252b5132 | 3918 | { |
25dbc73a | 3919 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3920 | struct plt_entry **local_plt; |
bac3c8c5 | 3921 | unsigned char *local_got_tls_masks; |
252b5132 | 3922 | |
25dbc73a | 3923 | if (local_got_refcounts == NULL) |
252b5132 | 3924 | { |
25dbc73a AM |
3925 | bfd_size_type size = symtab_hdr->sh_info; |
3926 | ||
e054468f AM |
3927 | size *= (sizeof (*local_got_refcounts) |
3928 | + sizeof (*local_plt) | |
3929 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3930 | local_got_refcounts = bfd_zalloc (abfd, size); |
3931 | if (local_got_refcounts == NULL) | |
e054468f | 3932 | return NULL; |
25dbc73a | 3933 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3934 | } |
41fcb14e | 3935 | |
e054468f | 3936 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
bac3c8c5 | 3937 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 AM |
3938 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
3939 | if ((tls_type & NON_GOT) == 0) | |
e054468f AM |
3940 | local_got_refcounts[r_symndx] += 1; |
3941 | return local_plt + r_symndx; | |
25dbc73a | 3942 | } |
41fcb14e | 3943 | |
a6aa5195 | 3944 | static bfd_boolean |
3ec01793 | 3945 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3946 | asection *sec, bfd_vma addend) |
3947 | { | |
3948 | struct plt_entry *ent; | |
3949 | ||
32af9f6e AM |
3950 | if (addend < 32768) |
3951 | sec = NULL; | |
3ec01793 | 3952 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3953 | if (ent->sec == sec && ent->addend == addend) |
3954 | break; | |
3955 | if (ent == NULL) | |
3956 | { | |
3957 | bfd_size_type amt = sizeof (*ent); | |
3958 | ent = bfd_alloc (abfd, amt); | |
3959 | if (ent == NULL) | |
3960 | return FALSE; | |
3ec01793 | 3961 | ent->next = *plist; |
a6aa5195 AM |
3962 | ent->sec = sec; |
3963 | ent->addend = addend; | |
3964 | ent->plt.refcount = 0; | |
3ec01793 | 3965 | *plist = ent; |
a6aa5195 AM |
3966 | } |
3967 | ent->plt.refcount += 1; | |
3968 | return TRUE; | |
3969 | } | |
3970 | ||
3971 | static struct plt_entry * | |
3ec01793 | 3972 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3973 | { |
3974 | struct plt_entry *ent; | |
3975 | ||
3976 | if (addend < 32768) | |
3977 | sec = NULL; | |
3ec01793 | 3978 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3979 | if (ent->sec == sec && ent->addend == addend) |
3980 | break; | |
3981 | return ent; | |
3982 | } | |
3983 | ||
e054468f AM |
3984 | static bfd_boolean |
3985 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3986 | { | |
3987 | return (r_type == R_PPC_PLTREL24 | |
3988 | || r_type == R_PPC_LOCAL24PC | |
3989 | || r_type == R_PPC_REL24 | |
3990 | || r_type == R_PPC_REL14 | |
3991 | || r_type == R_PPC_REL14_BRTAKEN | |
3992 | || r_type == R_PPC_REL14_BRNTAKEN | |
3993 | || r_type == R_PPC_ADDR24 | |
3994 | || r_type == R_PPC_ADDR14 | |
3995 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
3996 | || r_type == R_PPC_ADDR14_BRNTAKEN |
3997 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
3998 | } |
3999 | ||
23cedd1d AM |
4000 | /* Relocs on inline plt call sequence insns prior to the call. */ |
4001 | ||
4002 | static bfd_boolean | |
4003 | is_plt_seq_reloc (enum elf_ppc_reloc_type r_type) | |
4004 | { | |
4005 | return (r_type == R_PPC_PLT16_HA | |
4006 | || r_type == R_PPC_PLT16_HI | |
4007 | || r_type == R_PPC_PLT16_LO | |
4008 | || r_type == R_PPC_PLTSEQ); | |
4009 | } | |
4010 | ||
25dbc73a AM |
4011 | static void |
4012 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
4013 | { | |
4eca0228 | 4014 | _bfd_error_handler |
695344c0 | 4015 | /* xgettext:c-format */ |
871b3ab2 | 4016 | (_("%pB: relocation %s cannot be used when making a shared object"), |
25dbc73a AM |
4017 | abfd, |
4018 | ppc_elf_howto_table[r_type]->name); | |
4019 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
4020 | } |
4021 | ||
25dbc73a AM |
4022 | /* Look through the relocs for a section during the first phase, and |
4023 | allocate space in the global offset table or procedure linkage | |
4024 | table. */ | |
252b5132 | 4025 | |
b34976b6 | 4026 | static bfd_boolean |
25dbc73a AM |
4027 | ppc_elf_check_relocs (bfd *abfd, |
4028 | struct bfd_link_info *info, | |
4029 | asection *sec, | |
4030 | const Elf_Internal_Rela *relocs) | |
252b5132 | 4031 | { |
7619e7c7 | 4032 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
4033 | Elf_Internal_Shdr *symtab_hdr; |
4034 | struct elf_link_hash_entry **sym_hashes; | |
4035 | const Elf_Internal_Rela *rel; | |
4036 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 4037 | asection *got2, *sreloc; |
727fc41e | 4038 | struct elf_link_hash_entry *tga; |
25dbc73a | 4039 | |
0e1862bb | 4040 | if (bfd_link_relocatable (info)) |
25dbc73a | 4041 | return TRUE; |
252b5132 | 4042 | |
c87b5a93 AM |
4043 | /* Don't do anything special with non-loaded, non-alloced sections. |
4044 | In particular, any relocs in such sections should not affect GOT | |
4045 | and PLT reference counting (ie. we don't allow them to create GOT | |
4046 | or PLT entries), there's no possibility or desire to optimize TLS | |
4047 | relocs, and there's not much point in propagating relocs to shared | |
4048 | libs that the dynamic linker won't relocate. */ | |
4049 | if ((sec->flags & SEC_ALLOC) == 0) | |
4050 | return TRUE; | |
4051 | ||
252b5132 | 4052 | #ifdef DEBUG |
871b3ab2 | 4053 | _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB", |
25dbc73a | 4054 | sec, abfd); |
252b5132 RH |
4055 | #endif |
4056 | ||
0c8d6e5c | 4057 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 4058 | |
25dbc73a AM |
4059 | /* Initialize howto table if not already done. */ |
4060 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
4061 | ppc_elf_howto_init (); | |
4062 | ||
7619e7c7 | 4063 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
4064 | if (htab->glink == NULL) |
4065 | { | |
4066 | if (htab->elf.dynobj == NULL) | |
4067 | htab->elf.dynobj = abfd; | |
4068 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
4069 | return FALSE; | |
4070 | } | |
727fc41e AM |
4071 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4072 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4073 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 4074 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 4075 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
4076 | sreloc = NULL; |
4077 | ||
4078 | rel_end = relocs + sec->reloc_count; | |
4079 | for (rel = relocs; rel < rel_end; rel++) | |
4080 | { | |
4081 | unsigned long r_symndx; | |
4082 | enum elf_ppc_reloc_type r_type; | |
4083 | struct elf_link_hash_entry *h; | |
727fc41e | 4084 | int tls_type; |
cbf95972 | 4085 | struct plt_entry **ifunc; |
2d7ad24e AM |
4086 | struct plt_entry **pltent; |
4087 | bfd_vma addend; | |
25dbc73a AM |
4088 | |
4089 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4090 | if (r_symndx < symtab_hdr->sh_info) | |
4091 | h = NULL; | |
4092 | else | |
973a3492 L |
4093 | { |
4094 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4095 | while (h->root.type == bfd_link_hash_indirect | |
4096 | || h->root.type == bfd_link_hash_warning) | |
4097 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4098 | } | |
25dbc73a AM |
4099 | |
4100 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
4101 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
4102 | startup code. */ | |
3b36f7e6 | 4103 | if (h != NULL |
ce558b89 | 4104 | && htab->elf.sgot == NULL |
3b36f7e6 | 4105 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 4106 | { |
3b36f7e6 AM |
4107 | if (htab->elf.dynobj == NULL) |
4108 | htab->elf.dynobj = abfd; | |
4109 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4110 | return FALSE; | |
4111 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 4112 | } |
252b5132 | 4113 | |
727fc41e | 4114 | tls_type = 0; |
de972ffa | 4115 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 4116 | ifunc = NULL; |
06a162cf | 4117 | if (h == NULL && !htab->is_vxworks) |
e054468f | 4118 | { |
06a162cf AM |
4119 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4120 | abfd, r_symndx); | |
4121 | if (isym == NULL) | |
4122 | return FALSE; | |
4123 | ||
0bed072f | 4124 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 4125 | { |
0bed072f | 4126 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf | 4127 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
37da22e5 | 4128 | NON_GOT | PLT_IFUNC); |
06a162cf | 4129 | if (ifunc == NULL) |
e054468f AM |
4130 | return FALSE; |
4131 | ||
06a162cf AM |
4132 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
4133 | In a non-pie executable even when there are | |
4134 | no plt calls. */ | |
0e1862bb | 4135 | if (!bfd_link_pic (info) |
08be3224 AM |
4136 | || is_branch_reloc (r_type) |
4137 | || r_type == R_PPC_PLT16_LO | |
4138 | || r_type == R_PPC_PLT16_HI | |
4139 | || r_type == R_PPC_PLT16_HA) | |
e054468f | 4140 | { |
2d7ad24e | 4141 | addend = 0; |
0bed072f | 4142 | if (r_type == R_PPC_PLTREL24) |
08be3224 AM |
4143 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
4144 | if (bfd_link_pic (info) | |
4145 | && (r_type == R_PPC_PLTREL24 | |
4146 | || r_type == R_PPC_PLT16_LO | |
4147 | || r_type == R_PPC_PLT16_HI | |
4148 | || r_type == R_PPC_PLT16_HA)) | |
4149 | addend = rel->r_addend; | |
0bed072f AM |
4150 | if (!update_plt_info (abfd, ifunc, got2, addend)) |
4151 | return FALSE; | |
e054468f AM |
4152 | } |
4153 | } | |
25f23106 AM |
4154 | } |
4155 | ||
de972ffa AM |
4156 | if (!htab->is_vxworks |
4157 | && is_branch_reloc (r_type) | |
4158 | && h != NULL | |
4159 | && h == tga) | |
25f23106 | 4160 | { |
de972ffa AM |
4161 | if (rel != relocs |
4162 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
4163 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
4164 | /* We have a new-style __tls_get_addr call with a marker | |
4165 | reloc. */ | |
4166 | ; | |
4167 | else | |
4168 | /* Mark this section as having an old-style call. */ | |
4169 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4170 | } |
727fc41e | 4171 | |
25dbc73a AM |
4172 | switch (r_type) |
4173 | { | |
727fc41e AM |
4174 | case R_PPC_TLSGD: |
4175 | case R_PPC_TLSLD: | |
4176 | /* These special tls relocs tie a call to __tls_get_addr with | |
4177 | its parameter symbol. */ | |
37da22e5 AM |
4178 | if (h != NULL) |
4179 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4180 | else | |
4181 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4182 | NON_GOT | TLS_TLS | TLS_MARK)) | |
4183 | return FALSE; | |
727fc41e AM |
4184 | break; |
4185 | ||
23cedd1d AM |
4186 | case R_PPC_PLTSEQ: |
4187 | break; | |
4188 | ||
25dbc73a AM |
4189 | case R_PPC_GOT_TLSLD16: |
4190 | case R_PPC_GOT_TLSLD16_LO: | |
4191 | case R_PPC_GOT_TLSLD16_HI: | |
4192 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4193 | tls_type = TLS_TLS | TLS_LD; |
4194 | goto dogottls; | |
252b5132 | 4195 | |
25dbc73a AM |
4196 | case R_PPC_GOT_TLSGD16: |
4197 | case R_PPC_GOT_TLSGD16_LO: | |
4198 | case R_PPC_GOT_TLSGD16_HI: | |
4199 | case R_PPC_GOT_TLSGD16_HA: | |
4200 | tls_type = TLS_TLS | TLS_GD; | |
4201 | goto dogottls; | |
4202 | ||
4203 | case R_PPC_GOT_TPREL16: | |
4204 | case R_PPC_GOT_TPREL16_LO: | |
4205 | case R_PPC_GOT_TPREL16_HI: | |
4206 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 4207 | if (bfd_link_dll (info)) |
25dbc73a AM |
4208 | info->flags |= DF_STATIC_TLS; |
4209 | tls_type = TLS_TLS | TLS_TPREL; | |
4210 | goto dogottls; | |
4211 | ||
4212 | case R_PPC_GOT_DTPREL16: | |
4213 | case R_PPC_GOT_DTPREL16_LO: | |
4214 | case R_PPC_GOT_DTPREL16_HI: | |
4215 | case R_PPC_GOT_DTPREL16_HA: | |
4216 | tls_type = TLS_TLS | TLS_DTPREL; | |
4217 | dogottls: | |
4218 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4219 | /* Fall through. */ |
252b5132 | 4220 | |
25dbc73a AM |
4221 | /* GOT16 relocations */ |
4222 | case R_PPC_GOT16: | |
4223 | case R_PPC_GOT16_LO: | |
4224 | case R_PPC_GOT16_HI: | |
4225 | case R_PPC_GOT16_HA: | |
4226 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 4227 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
4228 | { |
4229 | if (htab->elf.dynobj == NULL) | |
4230 | htab->elf.dynobj = abfd; | |
4231 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4232 | return FALSE; | |
4233 | } | |
4234 | if (h != NULL) | |
4235 | { | |
4236 | h->got.refcount += 1; | |
4237 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4238 | } | |
4239 | else | |
4240 | /* This is a global offset table entry for a local symbol. */ | |
4241 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4242 | return FALSE; | |
91e21fb7 AM |
4243 | |
4244 | /* We may also need a plt entry if the symbol turns out to be | |
4245 | an ifunc. */ | |
0e1862bb | 4246 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
4247 | { |
4248 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4249 | return FALSE; | |
4250 | } | |
25dbc73a | 4251 | break; |
252b5132 | 4252 | |
25dbc73a AM |
4253 | /* Indirect .sdata relocation. */ |
4254 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 4255 | if (bfd_link_pic (info)) |
25dbc73a AM |
4256 | { |
4257 | bad_shared_reloc (abfd, r_type); | |
4258 | return FALSE; | |
4259 | } | |
93d1b056 AM |
4260 | htab->sdata[0].sym->ref_regular = 1; |
4261 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4262 | h, rel)) | |
25dbc73a | 4263 | return FALSE; |
046183de AM |
4264 | if (h != NULL) |
4265 | { | |
4266 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4267 | h->non_got_ref = TRUE; | |
4268 | } | |
25dbc73a | 4269 | break; |
252b5132 | 4270 | |
25dbc73a AM |
4271 | /* Indirect .sdata2 relocation. */ |
4272 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 4273 | if (bfd_link_pic (info)) |
25dbc73a AM |
4274 | { |
4275 | bad_shared_reloc (abfd, r_type); | |
4276 | return FALSE; | |
4277 | } | |
93d1b056 AM |
4278 | htab->sdata[1].sym->ref_regular = 1; |
4279 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4280 | h, rel)) | |
25dbc73a | 4281 | return FALSE; |
046183de AM |
4282 | if (h != NULL) |
4283 | { | |
4284 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4285 | h->non_got_ref = TRUE; | |
4286 | } | |
25dbc73a | 4287 | break; |
252b5132 | 4288 | |
93d1b056 AM |
4289 | case R_PPC_SDAREL16: |
4290 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 4291 | /* Fall through. */ |
93d1b056 | 4292 | |
b9c361e0 JL |
4293 | case R_PPC_VLE_SDAREL_LO16A: |
4294 | case R_PPC_VLE_SDAREL_LO16D: | |
4295 | case R_PPC_VLE_SDAREL_HI16A: | |
4296 | case R_PPC_VLE_SDAREL_HI16D: | |
4297 | case R_PPC_VLE_SDAREL_HA16A: | |
4298 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4299 | if (h != NULL) |
4300 | { | |
4301 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4302 | h->non_got_ref = TRUE; | |
4303 | } | |
4304 | break; | |
4305 | ||
b9c361e0 JL |
4306 | case R_PPC_VLE_REL8: |
4307 | case R_PPC_VLE_REL15: | |
4308 | case R_PPC_VLE_REL24: | |
4309 | case R_PPC_VLE_LO16A: | |
4310 | case R_PPC_VLE_LO16D: | |
4311 | case R_PPC_VLE_HI16A: | |
4312 | case R_PPC_VLE_HI16D: | |
4313 | case R_PPC_VLE_HA16A: | |
4314 | case R_PPC_VLE_HA16D: | |
83eef883 | 4315 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
4316 | break; |
4317 | ||
25dbc73a | 4318 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 4319 | if (bfd_link_pic (info)) |
046183de AM |
4320 | { |
4321 | bad_shared_reloc (abfd, r_type); | |
4322 | return FALSE; | |
4323 | } | |
93d1b056 | 4324 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4325 | if (h != NULL) |
4326 | { | |
4327 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4328 | h->non_got_ref = TRUE; | |
4329 | } | |
4330 | break; | |
4331 | ||
b9c361e0 JL |
4332 | case R_PPC_VLE_SDA21_LO: |
4333 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4334 | case R_PPC_EMB_SDA21: |
4335 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 4336 | if (bfd_link_pic (info)) |
046183de AM |
4337 | { |
4338 | bad_shared_reloc (abfd, r_type); | |
4339 | return FALSE; | |
4340 | } | |
046183de AM |
4341 | if (h != NULL) |
4342 | { | |
4343 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4344 | h->non_got_ref = TRUE; | |
4345 | } | |
4346 | break; | |
4347 | ||
25dbc73a AM |
4348 | case R_PPC_EMB_NADDR32: |
4349 | case R_PPC_EMB_NADDR16: | |
4350 | case R_PPC_EMB_NADDR16_LO: | |
4351 | case R_PPC_EMB_NADDR16_HI: | |
4352 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 4353 | if (bfd_link_pic (info)) |
25dbc73a AM |
4354 | { |
4355 | bad_shared_reloc (abfd, r_type); | |
4356 | return FALSE; | |
4357 | } | |
4dc4a9a5 | 4358 | if (h != NULL) |
046183de | 4359 | h->non_got_ref = TRUE; |
25dbc73a | 4360 | break; |
252b5132 | 4361 | |
25dbc73a | 4362 | case R_PPC_PLTREL24: |
de972ffa | 4363 | if (h == NULL) |
6d78d0b9 | 4364 | break; |
08be3224 | 4365 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
3e04d765 | 4366 | goto pltentry; |
08be3224 | 4367 | |
23cedd1d | 4368 | case R_PPC_PLTCALL: |
3e04d765 AM |
4369 | sec->has_pltcall = 1; |
4370 | /* Fall through. */ | |
4371 | ||
6d78d0b9 | 4372 | case R_PPC_PLT32: |
25dbc73a AM |
4373 | case R_PPC_PLTREL32: |
4374 | case R_PPC_PLT16_LO: | |
4375 | case R_PPC_PLT16_HI: | |
4376 | case R_PPC_PLT16_HA: | |
3e04d765 | 4377 | pltentry: |
25dbc73a AM |
4378 | #ifdef DEBUG |
4379 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4380 | #endif | |
cbf95972 | 4381 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
4382 | if (h == NULL) |
4383 | { | |
2d7ad24e AM |
4384 | pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4385 | NON_GOT | PLT_KEEP); | |
4386 | if (pltent == NULL) | |
4387 | return FALSE; | |
25dbc73a | 4388 | } |
a6aa5195 AM |
4389 | else |
4390 | { | |
2d7ad24e AM |
4391 | if (r_type != R_PPC_PLTREL24) |
4392 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
a6aa5195 | 4393 | h->needs_plt = 1; |
2d7ad24e | 4394 | pltent = &h->plt.plist; |
a6aa5195 | 4395 | } |
2d7ad24e AM |
4396 | addend = 0; |
4397 | if (bfd_link_pic (info) | |
4398 | && (r_type == R_PPC_PLTREL24 | |
4399 | || r_type == R_PPC_PLT16_LO | |
4400 | || r_type == R_PPC_PLT16_HI | |
4401 | || r_type == R_PPC_PLT16_HA)) | |
4402 | addend = rel->r_addend; | |
4403 | if (!update_plt_info (abfd, pltent, got2, addend)) | |
4404 | return FALSE; | |
25dbc73a | 4405 | break; |
ee05f2fe | 4406 | |
25dbc73a AM |
4407 | /* The following relocations don't need to propagate the |
4408 | relocation if linking a shared object since they are | |
4409 | section relative. */ | |
4410 | case R_PPC_SECTOFF: | |
4411 | case R_PPC_SECTOFF_LO: | |
4412 | case R_PPC_SECTOFF_HI: | |
4413 | case R_PPC_SECTOFF_HA: | |
4414 | case R_PPC_DTPREL16: | |
4415 | case R_PPC_DTPREL16_LO: | |
4416 | case R_PPC_DTPREL16_HI: | |
4417 | case R_PPC_DTPREL16_HA: | |
4418 | case R_PPC_TOC16: | |
4419 | break; | |
252b5132 | 4420 | |
d7128ce4 AM |
4421 | case R_PPC_REL16: |
4422 | case R_PPC_REL16_LO: | |
4423 | case R_PPC_REL16_HI: | |
4424 | case R_PPC_REL16_HA: | |
a680de9a | 4425 | case R_PPC_REL16DX_HA: |
016687f8 | 4426 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4427 | break; |
4428 | ||
a6aa5195 | 4429 | /* These are just markers. */ |
25dbc73a AM |
4430 | case R_PPC_TLS: |
4431 | case R_PPC_EMB_MRKREF: | |
4432 | case R_PPC_NONE: | |
4433 | case R_PPC_max: | |
32af9f6e AM |
4434 | case R_PPC_RELAX: |
4435 | case R_PPC_RELAX_PLT: | |
4436 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 4437 | case R_PPC_16DX_HA: |
25dbc73a | 4438 | break; |
252b5132 | 4439 | |
25dbc73a AM |
4440 | /* These should only appear in dynamic objects. */ |
4441 | case R_PPC_COPY: | |
4442 | case R_PPC_GLOB_DAT: | |
4443 | case R_PPC_JMP_SLOT: | |
4444 | case R_PPC_RELATIVE: | |
e054468f | 4445 | case R_PPC_IRELATIVE: |
25dbc73a | 4446 | break; |
252b5132 | 4447 | |
25dbc73a AM |
4448 | /* These aren't handled yet. We'll report an error later. */ |
4449 | case R_PPC_ADDR30: | |
4450 | case R_PPC_EMB_RELSEC16: | |
4451 | case R_PPC_EMB_RELST_LO: | |
4452 | case R_PPC_EMB_RELST_HI: | |
4453 | case R_PPC_EMB_RELST_HA: | |
4454 | case R_PPC_EMB_BIT_FLD: | |
4455 | break; | |
252b5132 | 4456 | |
25dbc73a AM |
4457 | /* This refers only to functions defined in the shared library. */ |
4458 | case R_PPC_LOCAL24PC: | |
727fc41e | 4459 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4460 | { |
4461 | htab->plt_type = PLT_OLD; | |
4462 | htab->old_bfd = abfd; | |
4463 | } | |
c7e17e05 AM |
4464 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4465 | { | |
c7e17e05 AM |
4466 | h->needs_plt = 1; |
4467 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4468 | return FALSE; | |
4469 | } | |
25dbc73a | 4470 | break; |
252b5132 | 4471 | |
25dbc73a AM |
4472 | /* This relocation describes the C++ object vtable hierarchy. |
4473 | Reconstruct it for later use during GC. */ | |
4474 | case R_PPC_GNU_VTINHERIT: | |
4475 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4476 | return FALSE; | |
4477 | break; | |
252b5132 | 4478 | |
25dbc73a AM |
4479 | /* This relocation describes which C++ vtable entries are actually |
4480 | used. Record for later use during GC. */ | |
4481 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4482 | BFD_ASSERT (h != NULL); |
4483 | if (h != NULL | |
4484 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4485 | return FALSE; |
4486 | break; | |
252b5132 | 4487 | |
7c8bbca5 | 4488 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 4489 | case R_PPC_TPREL32: |
1d483afe AM |
4490 | case R_PPC_TPREL16: |
4491 | case R_PPC_TPREL16_LO: | |
4492 | case R_PPC_TPREL16_HI: | |
4493 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 4494 | if (bfd_link_dll (info)) |
25dbc73a AM |
4495 | info->flags |= DF_STATIC_TLS; |
4496 | goto dodyn; | |
252b5132 | 4497 | |
25dbc73a AM |
4498 | /* Nor these. */ |
4499 | case R_PPC_DTPMOD32: | |
4500 | case R_PPC_DTPREL32: | |
4501 | goto dodyn; | |
252b5132 | 4502 | |
9edfd1af AM |
4503 | case R_PPC_REL32: |
4504 | if (h == NULL | |
4505 | && got2 != NULL | |
4506 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 4507 | && bfd_link_pic (info) |
4a3dc543 | 4508 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4509 | { |
4510 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4511 | the start of a function, which assembles to a REL32 | |
4512 | reference to .got2. If we detect one of these, then | |
4513 | force the old PLT layout because the linker cannot | |
4514 | reliably deduce the GOT pointer value needed for | |
4515 | PLT call stubs. */ | |
4516 | asection *s; | |
87d72d41 | 4517 | Elf_Internal_Sym *isym; |
9edfd1af | 4518 | |
87d72d41 AM |
4519 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4520 | abfd, r_symndx); | |
4521 | if (isym == NULL) | |
4522 | return FALSE; | |
4523 | ||
4524 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4525 | if (s == got2) |
016687f8 AM |
4526 | { |
4527 | htab->plt_type = PLT_OLD; | |
4528 | htab->old_bfd = abfd; | |
4529 | } | |
9edfd1af | 4530 | } |
7123df0e | 4531 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4532 | break; |
625af618 AM |
4533 | /* fall through */ |
4534 | ||
4535 | case R_PPC_ADDR32: | |
4536 | case R_PPC_ADDR16: | |
4537 | case R_PPC_ADDR16_LO: | |
4538 | case R_PPC_ADDR16_HI: | |
4539 | case R_PPC_ADDR16_HA: | |
4540 | case R_PPC_UADDR32: | |
4541 | case R_PPC_UADDR16: | |
0e1862bb | 4542 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
4543 | { |
4544 | /* We may need a plt entry if the symbol turns out to be | |
4545 | a function defined in a dynamic object. */ | |
3ec01793 | 4546 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4547 | return FALSE; |
4548 | ||
4549 | /* We may need a copy reloc too. */ | |
4550 | h->non_got_ref = 1; | |
4551 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
4552 | if (r_type == R_PPC_ADDR16_HA) |
4553 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
4554 | if (r_type == R_PPC_ADDR16_LO) | |
4555 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
4556 | } |
4557 | goto dodyn; | |
9edfd1af | 4558 | |
25dbc73a AM |
4559 | case R_PPC_REL24: |
4560 | case R_PPC_REL14: | |
4561 | case R_PPC_REL14_BRTAKEN: | |
4562 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4563 | if (h == NULL) |
25dbc73a | 4564 | break; |
7123df0e | 4565 | if (h == htab->elf.hgot) |
d7128ce4 | 4566 | { |
7123df0e | 4567 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4568 | { |
4569 | htab->plt_type = PLT_OLD; | |
4570 | htab->old_bfd = abfd; | |
4571 | } | |
d7128ce4 AM |
4572 | break; |
4573 | } | |
25dbc73a | 4574 | /* fall through */ |
ee05f2fe | 4575 | |
25dbc73a | 4576 | case R_PPC_ADDR24: |
25dbc73a AM |
4577 | case R_PPC_ADDR14: |
4578 | case R_PPC_ADDR14_BRTAKEN: | |
4579 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 4580 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
4581 | { |
4582 | /* We may need a plt entry if the symbol turns out to be | |
4583 | a function defined in a dynamic object. */ | |
e054468f | 4584 | h->needs_plt = 1; |
de972ffa | 4585 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4586 | return FALSE; |
625af618 | 4587 | break; |
25dbc73a | 4588 | } |
7619e7c7 | 4589 | |
25dbc73a AM |
4590 | dodyn: |
4591 | /* If we are creating a shared library, and this is a reloc | |
4592 | against a global symbol, or a non PC relative reloc | |
4593 | against a local symbol, then we need to copy the reloc | |
4594 | into the shared library. However, if we are linking with | |
4595 | -Bsymbolic, we do not need to copy a reloc against a | |
4596 | global symbol which is defined in an object we are | |
4597 | including in the link (i.e., DEF_REGULAR is set). At | |
4598 | this point we have not seen all the input files, so it is | |
4599 | possible that DEF_REGULAR is not set now but will be set | |
4600 | later (it is never cleared). In case of a weak definition, | |
4601 | DEF_REGULAR may be cleared later by a strong definition in | |
4602 | a shared library. We account for that possibility below by | |
4603 | storing information in the dyn_relocs field of the hash | |
4604 | table entry. A similar situation occurs when creating | |
4605 | shared libraries and symbol visibility changes render the | |
4606 | symbol local. | |
7619e7c7 | 4607 | |
25dbc73a AM |
4608 | If on the other hand, we are creating an executable, we |
4609 | may need to keep relocations for symbols satisfied by a | |
4610 | dynamic library if we manage to avoid copy relocs for the | |
4611 | symbol. */ | |
0e1862bb | 4612 | if ((bfd_link_pic (info) |
1d483afe | 4613 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4614 | || (h != NULL |
198f1157 | 4615 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4616 | || h->root.type == bfd_link_hash_defweak |
4617 | || !h->def_regular)))) | |
4618 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 4619 | && !bfd_link_pic (info) |
25dbc73a AM |
4620 | && h != NULL |
4621 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4622 | || !h->def_regular))) |
25dbc73a | 4623 | { |
25dbc73a AM |
4624 | #ifdef DEBUG |
4625 | fprintf (stderr, | |
4626 | "ppc_elf_check_relocs needs to " | |
4627 | "create relocation for %s\n", | |
4628 | (h && h->root.root.string | |
4629 | ? h->root.root.string : "<unknown>")); | |
4630 | #endif | |
4631 | if (sreloc == NULL) | |
4632 | { | |
c9a2f333 AM |
4633 | if (htab->elf.dynobj == NULL) |
4634 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4635 | |
4636 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4637 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4638 | ||
25dbc73a | 4639 | if (sreloc == NULL) |
83bac4b0 | 4640 | return FALSE; |
25dbc73a | 4641 | } |
7619e7c7 | 4642 | |
25dbc73a AM |
4643 | /* If this is a global symbol, we count the number of |
4644 | relocations we need for this symbol. */ | |
4645 | if (h != NULL) | |
4646 | { | |
f95f8542 AM |
4647 | struct elf_dyn_relocs *p; |
4648 | struct elf_dyn_relocs **rel_head; | |
4649 | ||
91d6fa6a | 4650 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4651 | p = *rel_head; |
4652 | if (p == NULL || p->sec != sec) | |
4653 | { | |
4654 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4655 | if (p == NULL) | |
4656 | return FALSE; | |
4657 | p->next = *rel_head; | |
4658 | *rel_head = p; | |
4659 | p->sec = sec; | |
4660 | p->count = 0; | |
4661 | p->pc_count = 0; | |
4662 | } | |
4663 | p->count += 1; | |
4664 | if (!must_be_dyn_reloc (info, r_type)) | |
4665 | p->pc_count += 1; | |
25dbc73a AM |
4666 | } |
4667 | else | |
4668 | { | |
4669 | /* Track dynamic relocs needed for local syms too. | |
4670 | We really need local syms available to do this | |
4671 | easily. Oh well. */ | |
f95f8542 AM |
4672 | struct ppc_dyn_relocs *p; |
4673 | struct ppc_dyn_relocs **rel_head; | |
4674 | bfd_boolean is_ifunc; | |
25dbc73a | 4675 | asection *s; |
6edfbbad | 4676 | void *vpp; |
87d72d41 | 4677 | Elf_Internal_Sym *isym; |
6edfbbad | 4678 | |
87d72d41 AM |
4679 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4680 | abfd, r_symndx); | |
4681 | if (isym == NULL) | |
25dbc73a | 4682 | return FALSE; |
7fce784e | 4683 | |
87d72d41 AM |
4684 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4685 | if (s == NULL) | |
4686 | s = sec; | |
4687 | ||
6edfbbad | 4688 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4689 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4690 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4691 | p = *rel_head; | |
4692 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4693 | p = p->next; | |
4694 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4695 | { | |
4696 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4697 | if (p == NULL) | |
4698 | return FALSE; | |
4699 | p->next = *rel_head; | |
4700 | *rel_head = p; | |
4701 | p->sec = sec; | |
4702 | p->ifunc = is_ifunc; | |
4703 | p->count = 0; | |
4704 | } | |
4705 | p->count += 1; | |
25dbc73a | 4706 | } |
7619e7c7 | 4707 | } |
25dbc73a AM |
4708 | |
4709 | break; | |
7619e7c7 AM |
4710 | } |
4711 | } | |
ee05f2fe | 4712 | |
25dbc73a AM |
4713 | return TRUE; |
4714 | } | |
4715 | \f | |
005d79fd AM |
4716 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
4717 | and OBFD, and merge non-conflicting ones. */ | |
4a91d0ba | 4718 | bfd_boolean |
50e03d47 | 4719 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 4720 | { |
50e03d47 | 4721 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
4722 | obj_attribute *in_attr, *in_attrs; |
4723 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 4724 | bfd_boolean ret = TRUE; |
34c8bcba | 4725 | |
c6e65352 DJ |
4726 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4727 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4728 | ||
c6e65352 DJ |
4729 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4730 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 4731 | |
c6e65352 | 4732 | if (in_attr->i != out_attr->i) |
34c8bcba | 4733 | { |
005d79fd AM |
4734 | int in_fp = in_attr->i & 3; |
4735 | int out_fp = out_attr->i & 3; | |
4a91d0ba | 4736 | static bfd *last_fp, *last_ld; |
005d79fd AM |
4737 | |
4738 | if (in_fp == 0) | |
34c8bcba | 4739 | ; |
005d79fd AM |
4740 | else if (out_fp == 0) |
4741 | { | |
8d2c8c3d | 4742 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 4743 | out_attr->i ^= in_fp; |
4a91d0ba | 4744 | last_fp = ibfd; |
005d79fd AM |
4745 | } |
4746 | else if (out_fp != 2 && in_fp == 2) | |
8d2c8c3d AM |
4747 | { |
4748 | _bfd_error_handler | |
4749 | /* xgettext:c-format */ | |
4a91d0ba AM |
4750 | (_("%pB uses hard float, %pB uses soft float"), |
4751 | last_fp, ibfd); | |
4752 | ret = FALSE; | |
8d2c8c3d | 4753 | } |
005d79fd | 4754 | else if (out_fp == 2 && in_fp != 2) |
8d2c8c3d AM |
4755 | { |
4756 | _bfd_error_handler | |
4757 | /* xgettext:c-format */ | |
4a91d0ba AM |
4758 | (_("%pB uses hard float, %pB uses soft float"), |
4759 | ibfd, last_fp); | |
4760 | ret = FALSE; | |
8d2c8c3d | 4761 | } |
005d79fd | 4762 | else if (out_fp == 1 && in_fp == 3) |
8d2c8c3d AM |
4763 | { |
4764 | _bfd_error_handler | |
4765 | /* xgettext:c-format */ | |
4a91d0ba AM |
4766 | (_("%pB uses double-precision hard float, " |
4767 | "%pB uses single-precision hard float"), last_fp, ibfd); | |
4768 | ret = FALSE; | |
8d2c8c3d | 4769 | } |
005d79fd | 4770 | else if (out_fp == 3 && in_fp == 1) |
8d2c8c3d AM |
4771 | { |
4772 | _bfd_error_handler | |
4773 | /* xgettext:c-format */ | |
4a91d0ba AM |
4774 | (_("%pB uses double-precision hard float, " |
4775 | "%pB uses single-precision hard float"), ibfd, last_fp); | |
4776 | ret = FALSE; | |
8d2c8c3d | 4777 | } |
005d79fd AM |
4778 | |
4779 | in_fp = in_attr->i & 0xc; | |
4780 | out_fp = out_attr->i & 0xc; | |
4781 | if (in_fp == 0) | |
4782 | ; | |
4783 | else if (out_fp == 0) | |
4784 | { | |
8d2c8c3d | 4785 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 4786 | out_attr->i ^= in_fp; |
4a91d0ba | 4787 | last_ld = ibfd; |
005d79fd AM |
4788 | } |
4789 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
8d2c8c3d AM |
4790 | { |
4791 | _bfd_error_handler | |
4792 | /* xgettext:c-format */ | |
4a91d0ba AM |
4793 | (_("%pB uses 64-bit long double, " |
4794 | "%pB uses 128-bit long double"), ibfd, last_ld); | |
4795 | ret = FALSE; | |
8d2c8c3d | 4796 | } |
005d79fd | 4797 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) |
8d2c8c3d AM |
4798 | { |
4799 | _bfd_error_handler | |
4800 | /* xgettext:c-format */ | |
4a91d0ba AM |
4801 | (_("%pB uses 64-bit long double, " |
4802 | "%pB uses 128-bit long double"), last_ld, ibfd); | |
4803 | ret = FALSE; | |
8d2c8c3d | 4804 | } |
005d79fd | 4805 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) |
8d2c8c3d AM |
4806 | { |
4807 | _bfd_error_handler | |
4808 | /* xgettext:c-format */ | |
4a91d0ba AM |
4809 | (_("%pB uses IBM long double, " |
4810 | "%pB uses IEEE long double"), last_ld, ibfd); | |
4811 | ret = FALSE; | |
8d2c8c3d | 4812 | } |
005d79fd | 4813 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) |
8d2c8c3d AM |
4814 | { |
4815 | _bfd_error_handler | |
4816 | /* xgettext:c-format */ | |
4a91d0ba AM |
4817 | (_("%pB uses IBM long double, " |
4818 | "%pB uses IEEE long double"), ibfd, last_ld); | |
4819 | ret = FALSE; | |
8d2c8c3d | 4820 | } |
c6e65352 | 4821 | } |
4a91d0ba AM |
4822 | |
4823 | if (!ret) | |
4824 | { | |
4825 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; | |
4826 | bfd_set_error (bfd_error_bad_value); | |
4827 | } | |
4828 | return ret; | |
005d79fd AM |
4829 | } |
4830 | ||
4831 | /* Merge object attributes from IBFD into OBFD. Warn if | |
4832 | there are conflicting attributes. */ | |
4833 | static bfd_boolean | |
50e03d47 | 4834 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 4835 | { |
50e03d47 | 4836 | bfd *obfd; |
005d79fd AM |
4837 | obj_attribute *in_attr, *in_attrs; |
4838 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 4839 | bfd_boolean ret; |
005d79fd | 4840 | |
4a91d0ba AM |
4841 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
4842 | return FALSE; | |
005d79fd | 4843 | |
50e03d47 | 4844 | obfd = info->output_bfd; |
005d79fd AM |
4845 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4846 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
4847 | |
4848 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4849 | merge non-conflicting ones. */ | |
4850 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4851 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4a91d0ba | 4852 | ret = TRUE; |
c6e65352 DJ |
4853 | if (in_attr->i != out_attr->i) |
4854 | { | |
005d79fd AM |
4855 | int in_vec = in_attr->i & 3; |
4856 | int out_vec = out_attr->i & 3; | |
4a91d0ba | 4857 | static bfd *last_vec; |
c6e65352 | 4858 | |
005d79fd AM |
4859 | if (in_vec == 0) |
4860 | ; | |
4861 | else if (out_vec == 0) | |
c6e65352 | 4862 | { |
8d2c8c3d | 4863 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 4864 | out_attr->i = in_vec; |
4a91d0ba | 4865 | last_vec = ibfd; |
c6e65352 | 4866 | } |
c6e65352 DJ |
4867 | /* For now, allow generic to transition to AltiVec or SPE |
4868 | without a warning. If GCC marked files with their stack | |
4869 | alignment and used don't-care markings for files which are | |
4870 | not affected by the vector ABI, we could warn about this | |
4871 | case too. */ | |
005d79fd | 4872 | else if (in_vec == 1) |
c6e65352 | 4873 | ; |
005d79fd AM |
4874 | else if (out_vec == 1) |
4875 | { | |
8d2c8c3d | 4876 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 4877 | out_attr->i = in_vec; |
4a91d0ba | 4878 | last_vec = ibfd; |
005d79fd AM |
4879 | } |
4880 | else if (out_vec < in_vec) | |
8d2c8c3d AM |
4881 | { |
4882 | _bfd_error_handler | |
4883 | /* xgettext:c-format */ | |
4a91d0ba AM |
4884 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
4885 | last_vec, ibfd); | |
8d2c8c3d | 4886 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 4887 | ret = FALSE; |
8d2c8c3d | 4888 | } |
005d79fd | 4889 | else if (out_vec > in_vec) |
8d2c8c3d AM |
4890 | { |
4891 | _bfd_error_handler | |
4892 | /* xgettext:c-format */ | |
4a91d0ba AM |
4893 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
4894 | ibfd, last_vec); | |
8d2c8c3d | 4895 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 4896 | ret = FALSE; |
8d2c8c3d | 4897 | } |
34c8bcba JM |
4898 | } |
4899 | ||
f82e0623 NF |
4900 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4901 | and merge non-conflicting ones. */ | |
4902 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4903 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4904 | if (in_attr->i != out_attr->i) | |
4905 | { | |
005d79fd AM |
4906 | int in_struct = in_attr->i & 3; |
4907 | int out_struct = out_attr->i & 3; | |
4a91d0ba | 4908 | static bfd *last_struct; |
005d79fd AM |
4909 | |
4910 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 4911 | ; |
005d79fd AM |
4912 | else if (out_struct == 0) |
4913 | { | |
8d2c8c3d | 4914 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 4915 | out_attr->i = in_struct; |
4a91d0ba | 4916 | last_struct = ibfd; |
005d79fd AM |
4917 | } |
4918 | else if (out_struct < in_struct) | |
8d2c8c3d AM |
4919 | { |
4920 | _bfd_error_handler | |
4921 | /* xgettext:c-format */ | |
4a91d0ba AM |
4922 | (_("%pB uses r3/r4 for small structure returns, " |
4923 | "%pB uses memory"), last_struct, ibfd); | |
8d2c8c3d | 4924 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 4925 | ret = FALSE; |
8d2c8c3d | 4926 | } |
005d79fd | 4927 | else if (out_struct > in_struct) |
8d2c8c3d AM |
4928 | { |
4929 | _bfd_error_handler | |
4930 | /* xgettext:c-format */ | |
4a91d0ba AM |
4931 | (_("%pB uses r3/r4 for small structure returns, " |
4932 | "%pB uses memory"), ibfd, last_struct); | |
8d2c8c3d | 4933 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 4934 | ret = FALSE; |
8d2c8c3d | 4935 | } |
f82e0623 | 4936 | } |
4a91d0ba AM |
4937 | if (!ret) |
4938 | { | |
4939 | bfd_set_error (bfd_error_bad_value); | |
4940 | return FALSE; | |
4941 | } | |
f82e0623 | 4942 | |
34c8bcba | 4943 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 4944 | return _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
4945 | } |
4946 | ||
8853c3d3 AM |
4947 | /* Merge backend specific data from an object file to the output |
4948 | object file when linking. */ | |
4949 | ||
4950 | static bfd_boolean | |
50e03d47 | 4951 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 4952 | { |
50e03d47 | 4953 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
4954 | flagword old_flags; |
4955 | flagword new_flags; | |
4956 | bfd_boolean error; | |
4957 | ||
0c8d6e5c | 4958 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4959 | return TRUE; |
4960 | ||
cc643b88 | 4961 | /* Check if we have the same endianness. */ |
50e03d47 | 4962 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
4963 | return FALSE; |
4964 | ||
50e03d47 | 4965 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
4966 | return FALSE; |
4967 | ||
8853c3d3 AM |
4968 | new_flags = elf_elfheader (ibfd)->e_flags; |
4969 | old_flags = elf_elfheader (obfd)->e_flags; | |
4970 | if (!elf_flags_init (obfd)) | |
4971 | { | |
4972 | /* First call, no flags set. */ | |
4973 | elf_flags_init (obfd) = TRUE; | |
4974 | elf_elfheader (obfd)->e_flags = new_flags; | |
4975 | } | |
4976 | ||
4977 | /* Compatible flags are ok. */ | |
4978 | else if (new_flags == old_flags) | |
4979 | ; | |
4980 | ||
4981 | /* Incompatible flags. */ | |
4982 | else | |
4983 | { | |
4984 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4985 | to be linked with either. */ | |
4986 | error = FALSE; | |
4987 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4988 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4989 | { | |
4990 | error = TRUE; | |
4eca0228 | 4991 | _bfd_error_handler |
871b3ab2 | 4992 | (_("%pB: compiled with -mrelocatable and linked with " |
8853c3d3 AM |
4993 | "modules compiled normally"), ibfd); |
4994 | } | |
4995 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4996 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4997 | { | |
4998 | error = TRUE; | |
4eca0228 | 4999 | _bfd_error_handler |
871b3ab2 | 5000 | (_("%pB: compiled normally and linked with " |
8853c3d3 AM |
5001 | "modules compiled with -mrelocatable"), ibfd); |
5002 | } | |
5003 | ||
5004 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
5005 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
5006 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
5007 | ||
5008 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
5009 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
5010 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
5011 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
5012 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
5013 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
5014 | ||
5015 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
5016 | any module uses it. */ | |
5017 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
5018 | ||
5019 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
5020 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
5021 | ||
5022 | /* Warn about any other mismatches. */ | |
5023 | if (new_flags != old_flags) | |
5024 | { | |
5025 | error = TRUE; | |
4eca0228 | 5026 | _bfd_error_handler |
695344c0 | 5027 | /* xgettext:c-format */ |
871b3ab2 | 5028 | (_("%pB: uses different e_flags (%#x) fields " |
cd9af601 AM |
5029 | "than previous modules (%#x)"), |
5030 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
5031 | } |
5032 | ||
5033 | if (error) | |
5034 | { | |
5035 | bfd_set_error (bfd_error_bad_value); | |
5036 | return FALSE; | |
5037 | } | |
5038 | } | |
5039 | ||
5040 | return TRUE; | |
5041 | } | |
b9c361e0 JL |
5042 | |
5043 | static void | |
95f0d0d2 | 5044 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
5045 | asection *input_section, |
5046 | unsigned long offset, | |
95f0d0d2 | 5047 | bfd_byte *loc, |
86c95733 | 5048 | bfd_vma value, |
08dc996f AM |
5049 | split16_format_type split16_format, |
5050 | bfd_boolean fixup) | |
b9c361e0 | 5051 | { |
08dc996f | 5052 | unsigned int insn, opcode, top5; |
b9c361e0 | 5053 | |
95f0d0d2 | 5054 | insn = bfd_get_32 (input_bfd, loc); |
673cff9b | 5055 | opcode = insn & 0xfc00f800; |
08dc996f AM |
5056 | if (opcode == E_OR2I_INSN |
5057 | || opcode == E_AND2I_DOT_INSN | |
5058 | || opcode == E_OR2IS_INSN | |
5059 | || opcode == E_LIS_INSN | |
5060 | || opcode == E_AND2IS_DOT_INSN) | |
5061 | { | |
5062 | if (split16_format != split16a_type) | |
5063 | { | |
5064 | if (fixup) | |
5065 | split16_format = split16a_type; | |
5066 | else | |
5067 | _bfd_error_handler | |
5068 | /* xgettext:c-format */ | |
871b3ab2 | 5069 | (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"), |
08dc996f AM |
5070 | input_bfd, input_section, offset, opcode); |
5071 | } | |
5072 | } | |
5073 | else if (opcode == E_ADD2I_DOT_INSN | |
5074 | || opcode == E_ADD2IS_INSN | |
5075 | || opcode == E_CMP16I_INSN | |
5076 | || opcode == E_MULL2I_INSN | |
5077 | || opcode == E_CMPL16I_INSN | |
5078 | || opcode == E_CMPH16I_INSN | |
5079 | || opcode == E_CMPHL16I_INSN) | |
5080 | { | |
5081 | if (split16_format != split16d_type) | |
5082 | { | |
5083 | if (fixup) | |
5084 | split16_format = split16d_type; | |
5085 | else | |
5086 | _bfd_error_handler | |
5087 | /* xgettext:c-format */ | |
871b3ab2 | 5088 | (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"), |
08dc996f AM |
5089 | input_bfd, input_section, offset, opcode); |
5090 | } | |
5091 | } | |
86c95733 | 5092 | top5 = value & 0xf800; |
5499c7c7 AM |
5093 | top5 = top5 << (split16_format == split16a_type ? 5 : 10); |
5094 | insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff); | |
b9c361e0 | 5095 | insn |= top5; |
86c95733 | 5096 | insn |= value & 0x7ff; |
95f0d0d2 | 5097 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 5098 | } |
83eef883 AFB |
5099 | |
5100 | static void | |
5101 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
5102 | { | |
5103 | unsigned int insn; | |
5104 | ||
5105 | insn = bfd_get_32 (output_bfd, loc); | |
5106 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
5107 | /* Top 4 bits of value to 17..20. */ | |
5108 | insn |= (value & 0xf0000) >> 5; | |
5109 | /* Next 5 bits of the value to 11..15. */ | |
5110 | insn |= (value & 0xf800) << 5; | |
5111 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
5112 | insn |= value & 0x7ff; | |
5113 | bfd_put_32 (output_bfd, insn, loc); | |
5114 | } | |
5115 | ||
8853c3d3 | 5116 | \f |
d7128ce4 AM |
5117 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
5118 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
5119 | int | |
5120 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 5121 | struct bfd_link_info *info) |
d7128ce4 AM |
5122 | { |
5123 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 5124 | flagword flags; |
d7128ce4 AM |
5125 | |
5126 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
5127 | |
5128 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 5129 | { |
b3874e1a AM |
5130 | struct elf_link_hash_entry *h; |
5131 | ||
5446cbdf | 5132 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 5133 | htab->plt_type = PLT_OLD; |
0e1862bb | 5134 | else if (bfd_link_pic (info) |
b3874e1a AM |
5135 | && htab->elf.dynamic_sections_created |
5136 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
5137 | FALSE, FALSE, TRUE)) != NULL | |
5138 | && (h->type == STT_FUNC | |
5139 | || h->needs_plt) | |
5140 | && h->ref_regular | |
5141 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 5142 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
5143 | { |
5144 | /* Profiling of shared libs (and pies) is not supported with | |
5145 | secure plt, because ppc32 does profiling before a | |
5146 | function prologue and a secure plt pic call stubs needs | |
5147 | r30 to be set up. */ | |
5148 | htab->plt_type = PLT_OLD; | |
5149 | } | |
016687f8 AM |
5150 | else |
5151 | { | |
5152 | bfd *ibfd; | |
5446cbdf | 5153 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
5154 | |
5155 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
5156 | Use the old style bss plt if a file makes plt calls | |
5157 | without using the new relocs, and if ld isn't given | |
5158 | --secure-plt and we never see REL16 relocs. */ | |
5159 | if (plt_type == PLT_UNSET) | |
5160 | plt_type = PLT_OLD; | |
c72f2fb2 | 5161 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 5162 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
5163 | { |
5164 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
5165 | plt_type = PLT_NEW; | |
5166 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
5167 | { | |
5168 | plt_type = PLT_OLD; | |
5169 | htab->old_bfd = ibfd; | |
5170 | break; | |
5171 | } | |
5172 | } | |
5173 | htab->plt_type = plt_type; | |
5174 | } | |
5175 | } | |
5446cbdf | 5176 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
5177 | { |
5178 | if (htab->old_bfd != NULL) | |
cf97bcb0 | 5179 | _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd); |
b3874e1a | 5180 | else |
cf97bcb0 | 5181 | _bfd_error_handler (_("bss-plt forced by profiling")); |
b3874e1a | 5182 | } |
d7128ce4 | 5183 | |
4a3dc543 | 5184 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 5185 | |
4a3dc543 | 5186 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
5187 | { |
5188 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
5189 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
5190 | |
5191 | /* The new PLT is a loaded section. */ | |
ce558b89 AM |
5192 | if (htab->elf.splt != NULL |
5193 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags)) | |
86b9da88 AM |
5194 | return -1; |
5195 | ||
5196 | /* The new GOT is not executable. */ | |
ce558b89 AM |
5197 | if (htab->elf.sgot != NULL |
5198 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags)) | |
86b9da88 | 5199 | return -1; |
d7128ce4 AM |
5200 | } |
5201 | else | |
5202 | { | |
5203 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
5204 | if (htab->glink != NULL |
5205 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
5206 | return -1; | |
d7128ce4 | 5207 | } |
4a3dc543 | 5208 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
5209 | } |
5210 | \f | |
25dbc73a AM |
5211 | /* Return the section that should be marked against GC for a given |
5212 | relocation. */ | |
586119b3 | 5213 | |
25dbc73a AM |
5214 | static asection * |
5215 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 5216 | struct bfd_link_info *info, |
25dbc73a AM |
5217 | Elf_Internal_Rela *rel, |
5218 | struct elf_link_hash_entry *h, | |
5219 | Elf_Internal_Sym *sym) | |
5220 | { | |
5221 | if (h != NULL) | |
07adf181 AM |
5222 | switch (ELF32_R_TYPE (rel->r_info)) |
5223 | { | |
5224 | case R_PPC_GNU_VTINHERIT: | |
5225 | case R_PPC_GNU_VTENTRY: | |
5226 | return NULL; | |
5227 | } | |
5228 | ||
5229 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 5230 | } |
49c09209 AM |
5231 | |
5232 | static bfd_boolean | |
5233 | get_sym_h (struct elf_link_hash_entry **hp, | |
5234 | Elf_Internal_Sym **symp, | |
5235 | asection **symsecp, | |
5236 | unsigned char **tls_maskp, | |
5237 | Elf_Internal_Sym **locsymsp, | |
5238 | unsigned long r_symndx, | |
5239 | bfd *ibfd) | |
5240 | { | |
5241 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5242 | ||
5243 | if (r_symndx >= symtab_hdr->sh_info) | |
5244 | { | |
5245 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5246 | struct elf_link_hash_entry *h; | |
5247 | ||
5248 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5249 | while (h->root.type == bfd_link_hash_indirect | |
5250 | || h->root.type == bfd_link_hash_warning) | |
5251 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5252 | ||
5253 | if (hp != NULL) | |
5254 | *hp = h; | |
5255 | ||
5256 | if (symp != NULL) | |
5257 | *symp = NULL; | |
5258 | ||
5259 | if (symsecp != NULL) | |
5260 | { | |
5261 | asection *symsec = NULL; | |
5262 | if (h->root.type == bfd_link_hash_defined | |
5263 | || h->root.type == bfd_link_hash_defweak) | |
5264 | symsec = h->root.u.def.section; | |
5265 | *symsecp = symsec; | |
5266 | } | |
5267 | ||
5268 | if (tls_maskp != NULL) | |
5269 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; | |
5270 | } | |
5271 | else | |
5272 | { | |
5273 | Elf_Internal_Sym *sym; | |
5274 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5275 | ||
5276 | if (locsyms == NULL) | |
5277 | { | |
5278 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5279 | if (locsyms == NULL) | |
5280 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5281 | symtab_hdr->sh_info, | |
5282 | 0, NULL, NULL, NULL); | |
5283 | if (locsyms == NULL) | |
5284 | return FALSE; | |
5285 | *locsymsp = locsyms; | |
5286 | } | |
5287 | sym = locsyms + r_symndx; | |
5288 | ||
5289 | if (hp != NULL) | |
5290 | *hp = NULL; | |
5291 | ||
5292 | if (symp != NULL) | |
5293 | *symp = sym; | |
5294 | ||
5295 | if (symsecp != NULL) | |
5296 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5297 | ||
5298 | if (tls_maskp != NULL) | |
5299 | { | |
5300 | bfd_signed_vma *local_got; | |
5301 | unsigned char *tls_mask; | |
5302 | ||
5303 | tls_mask = NULL; | |
5304 | local_got = elf_local_got_refcounts (ibfd); | |
5305 | if (local_got != NULL) | |
5306 | { | |
5307 | struct plt_entry **local_plt = (struct plt_entry **) | |
5308 | (local_got + symtab_hdr->sh_info); | |
5309 | unsigned char *lgot_masks = (unsigned char *) | |
5310 | (local_plt + symtab_hdr->sh_info); | |
5311 | tls_mask = &lgot_masks[r_symndx]; | |
5312 | } | |
5313 | *tls_maskp = tls_mask; | |
5314 | } | |
5315 | } | |
5316 | return TRUE; | |
5317 | } | |
25dbc73a | 5318 | \f |
3e04d765 AM |
5319 | /* Analyze inline PLT call relocations to see whether calls to locally |
5320 | defined functions can be converted to direct calls. */ | |
5321 | ||
5322 | bfd_boolean | |
5323 | ppc_elf_inline_plt (struct bfd_link_info *info) | |
5324 | { | |
5325 | struct ppc_elf_link_hash_table *htab; | |
5326 | bfd *ibfd; | |
5327 | asection *sec; | |
5328 | bfd_vma low_vma, high_vma, limit; | |
5329 | ||
5330 | htab = ppc_elf_hash_table (info); | |
5331 | if (htab == NULL) | |
5332 | return FALSE; | |
5333 | ||
5334 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
5335 | reduced somewhat to cater for possible stubs that might be added | |
5336 | between the call and its destination. */ | |
5337 | limit = 0x1e00000; | |
5338 | low_vma = -1; | |
5339 | high_vma = 0; | |
5340 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
5341 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
5342 | { | |
5343 | if (low_vma > sec->vma) | |
5344 | low_vma = sec->vma; | |
5345 | if (high_vma < sec->vma + sec->size) | |
5346 | high_vma = sec->vma + sec->size; | |
5347 | } | |
5348 | ||
5349 | /* If a "bl" can reach anywhere in local code sections, then we can | |
5350 | convert all inline PLT sequences to direct calls when the symbol | |
5351 | is local. */ | |
5352 | if (high_vma - low_vma < limit) | |
5353 | { | |
5354 | htab->can_convert_all_inline_plt = 1; | |
5355 | return TRUE; | |
5356 | } | |
5357 | ||
5358 | /* Otherwise, go looking through relocs for cases where a direct | |
5359 | call won't reach. Mark the symbol on any such reloc to disable | |
5360 | the optimization and keep the PLT entry as it seems likely that | |
5361 | this will be better than creating trampolines. Note that this | |
5362 | will disable the optimization for all inline PLT calls to a | |
5363 | particular symbol, not just those that won't reach. The | |
5364 | difficulty in doing a more precise optimization is that the | |
5365 | linker needs to make a decision depending on whether a | |
5366 | particular R_PPC_PLTCALL insn can be turned into a direct | |
5367 | call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in | |
5368 | the sequence, and there is nothing that ties those relocs | |
5369 | together except their symbol. */ | |
5370 | ||
5371 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
5372 | { | |
5373 | Elf_Internal_Shdr *symtab_hdr; | |
5374 | Elf_Internal_Sym *local_syms; | |
5375 | ||
5376 | if (!is_ppc_elf (ibfd)) | |
5377 | continue; | |
5378 | ||
5379 | local_syms = NULL; | |
5380 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5381 | ||
5382 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5383 | if (sec->has_pltcall | |
5384 | && !bfd_is_abs_section (sec->output_section)) | |
5385 | { | |
5386 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5387 | ||
5388 | /* Read the relocations. */ | |
5389 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5390 | info->keep_memory); | |
5391 | if (relstart == NULL) | |
5392 | return FALSE; | |
5393 | ||
5394 | relend = relstart + sec->reloc_count; | |
5395 | for (rel = relstart; rel < relend; ) | |
5396 | { | |
5397 | enum elf_ppc_reloc_type r_type; | |
5398 | unsigned long r_symndx; | |
5399 | asection *sym_sec; | |
5400 | struct elf_link_hash_entry *h; | |
5401 | Elf_Internal_Sym *sym; | |
5402 | unsigned char *tls_maskp; | |
5403 | ||
5404 | r_type = ELF32_R_TYPE (rel->r_info); | |
5405 | if (r_type != R_PPC_PLTCALL) | |
5406 | continue; | |
5407 | ||
5408 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5409 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
5410 | r_symndx, ibfd)) | |
5411 | { | |
5412 | if (elf_section_data (sec)->relocs != relstart) | |
5413 | free (relstart); | |
5414 | if (local_syms != NULL | |
5415 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5416 | free (local_syms); | |
5417 | return FALSE; | |
5418 | } | |
5419 | ||
5420 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
5421 | { | |
5422 | bfd_vma from, to; | |
5423 | if (h != NULL) | |
5424 | to = h->root.u.def.value; | |
5425 | else | |
5426 | to = sym->st_value; | |
5427 | to += (rel->r_addend | |
5428 | + sym_sec->output_offset | |
5429 | + sym_sec->output_section->vma); | |
5430 | from = (rel->r_offset | |
5431 | + sec->output_offset | |
5432 | + sec->output_section->vma); | |
5433 | if (to - from + limit < 2 * limit) | |
5434 | *tls_maskp &= ~PLT_KEEP; | |
5435 | } | |
5436 | } | |
5437 | if (elf_section_data (sec)->relocs != relstart) | |
5438 | free (relstart); | |
5439 | } | |
5440 | ||
5441 | if (local_syms != NULL | |
5442 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5443 | { | |
5444 | if (!info->keep_memory) | |
5445 | free (local_syms); | |
5446 | else | |
5447 | symtab_hdr->contents = (unsigned char *) local_syms; | |
5448 | } | |
5449 | } | |
5450 | ||
5451 | return TRUE; | |
5452 | } | |
5453 | ||
3a71aa26 AM |
5454 | /* Set plt output section type, htab->tls_get_addr, and call the |
5455 | generic ELF tls_setup function. */ | |
7fce784e | 5456 | |
25dbc73a | 5457 | asection * |
5446cbdf | 5458 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5459 | { |
25dbc73a | 5460 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5461 | |
25dbc73a | 5462 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5463 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5464 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5465 | if (htab->plt_type != PLT_NEW) |
5466 | htab->params->no_tls_get_addr_opt = TRUE; | |
5467 | ||
5446cbdf | 5468 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5469 | { |
5470 | struct elf_link_hash_entry *opt, *tga; | |
5471 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5472 | FALSE, FALSE, TRUE); | |
5473 | if (opt != NULL | |
5474 | && (opt->root.type == bfd_link_hash_defined | |
5475 | || opt->root.type == bfd_link_hash_defweak)) | |
5476 | { | |
5477 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5478 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5479 | be calling __tls_get_addr via a plt call stub, then | |
5480 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5481 | tga = htab->tls_get_addr; | |
5482 | if (htab->elf.dynamic_sections_created | |
5483 | && tga != NULL | |
5484 | && (tga->type == STT_FUNC | |
5485 | || tga->needs_plt) | |
5486 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 5487 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
5488 | { |
5489 | struct plt_entry *ent; | |
32af9f6e AM |
5490 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5491 | if (ent->plt.refcount > 0) | |
5492 | break; | |
5493 | if (ent != NULL) | |
a7f2871e AM |
5494 | { |
5495 | tga->root.type = bfd_link_hash_indirect; | |
5496 | tga->root.u.i.link = &opt->root; | |
5497 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 5498 | opt->mark = 1; |
a7f2871e AM |
5499 | if (opt->dynindx != -1) |
5500 | { | |
5501 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5502 | opt->dynindx = -1; | |
5503 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5504 | opt->dynstr_index); | |
5505 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5506 | return FALSE; | |
5507 | } | |
5508 | htab->tls_get_addr = opt; | |
5509 | } | |
5510 | } | |
5511 | } | |
5512 | else | |
5446cbdf | 5513 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5514 | } |
4a3dc543 | 5515 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
5516 | && htab->elf.splt != NULL |
5517 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 5518 | { |
ce558b89 AM |
5519 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
5520 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
5521 | } |
5522 | ||
25dbc73a | 5523 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5524 | } |
5525 | ||
3a71aa26 AM |
5526 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5527 | HASH. */ | |
5528 | ||
5529 | static bfd_boolean | |
5530 | branch_reloc_hash_match (const bfd *ibfd, | |
5531 | const Elf_Internal_Rela *rel, | |
5532 | const struct elf_link_hash_entry *hash) | |
5533 | { | |
5534 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5535 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5536 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5537 | ||
e054468f | 5538 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5539 | { |
5540 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5541 | struct elf_link_hash_entry *h; | |
5542 | ||
5543 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5544 | while (h->root.type == bfd_link_hash_indirect | |
5545 | || h->root.type == bfd_link_hash_warning) | |
5546 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5547 | if (h == hash) | |
5548 | return TRUE; | |
5549 | } | |
5550 | return FALSE; | |
5551 | } | |
5552 | ||
25dbc73a AM |
5553 | /* Run through all the TLS relocs looking for optimization |
5554 | opportunities. */ | |
252b5132 | 5555 | |
25dbc73a AM |
5556 | bfd_boolean |
5557 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5558 | struct bfd_link_info *info) | |
252b5132 | 5559 | { |
7fce784e | 5560 | bfd *ibfd; |
25dbc73a AM |
5561 | asection *sec; |
5562 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5563 | int pass; |
252b5132 | 5564 | |
3cbc1e5e | 5565 | if (!bfd_link_executable (info)) |
25dbc73a | 5566 | return TRUE; |
252b5132 | 5567 | |
7619e7c7 | 5568 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5569 | if (htab == NULL) |
5570 | return FALSE; | |
5571 | ||
b7fcf6f6 AM |
5572 | /* Make two passes through the relocs. First time check that tls |
5573 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5574 | followed by such a call. If they are not, don't do any tls |
5575 | optimization. On the second pass twiddle tls_mask flags to | |
5576 | notify relocate_section that optimization can be done, and | |
5577 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5578 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5579 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 | 5580 | { |
0ffa91dd | 5581 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5582 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5583 | |
b7fcf6f6 AM |
5584 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5585 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5586 | { | |
5587 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5588 | int expecting_tls_get_addr = 0; |
252b5132 | 5589 | |
b7fcf6f6 AM |
5590 | /* Read the relocations. */ |
5591 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5592 | info->keep_memory); | |
5593 | if (relstart == NULL) | |
5594 | return FALSE; | |
7619e7c7 | 5595 | |
b7fcf6f6 AM |
5596 | relend = relstart + sec->reloc_count; |
5597 | for (rel = relstart; rel < relend; rel++) | |
5598 | { | |
5599 | enum elf_ppc_reloc_type r_type; | |
5600 | unsigned long r_symndx; | |
5601 | struct elf_link_hash_entry *h = NULL; | |
bac3c8c5 | 5602 | unsigned char *tls_mask; |
37da22e5 | 5603 | unsigned char tls_set, tls_clear; |
b7fcf6f6 | 5604 | bfd_boolean is_local; |
b7fcf6f6 AM |
5605 | bfd_signed_vma *got_count; |
5606 | ||
5607 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5608 | if (r_symndx >= symtab_hdr->sh_info) | |
5609 | { | |
5610 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5611 | |
b7fcf6f6 AM |
5612 | sym_hashes = elf_sym_hashes (ibfd); |
5613 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5614 | while (h->root.type == bfd_link_hash_indirect | |
5615 | || h->root.type == bfd_link_hash_warning) | |
5616 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5617 | } | |
7619e7c7 | 5618 | |
b7fcf6f6 AM |
5619 | is_local = FALSE; |
5620 | if (h == NULL | |
5621 | || !h->def_dynamic) | |
5622 | is_local = TRUE; | |
7619e7c7 | 5623 | |
b7fcf6f6 | 5624 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5625 | /* If this section has old-style __tls_get_addr calls |
5626 | without marker relocs, then check that each | |
5627 | __tls_get_addr call reloc is preceded by a reloc | |
5628 | that conceivably belongs to the __tls_get_addr arg | |
5629 | setup insn. If we don't find matching arg setup | |
5630 | relocs, don't do any tls optimization. */ | |
5631 | if (pass == 0 | |
5632 | && sec->has_tls_get_addr_call | |
5633 | && h != NULL | |
5634 | && h == htab->tls_get_addr | |
5635 | && !expecting_tls_get_addr | |
5636 | && is_branch_reloc (r_type)) | |
5637 | { | |
25f53a85 | 5638 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5639 | "TLS optimization disabled\n", |
5640 | ibfd, sec, rel->r_offset); | |
5641 | if (elf_section_data (sec)->relocs != relstart) | |
5642 | free (relstart); | |
5643 | return TRUE; | |
5644 | } | |
5645 | ||
5646 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5647 | switch (r_type) |
5648 | { | |
5649 | case R_PPC_GOT_TLSLD16: | |
5650 | case R_PPC_GOT_TLSLD16_LO: | |
5651 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5652 | /* Fall through. */ |
b7fcf6f6 AM |
5653 | |
5654 | case R_PPC_GOT_TLSLD16_HI: | |
5655 | case R_PPC_GOT_TLSLD16_HA: | |
5656 | /* These relocs should never be against a symbol | |
5657 | defined in a shared lib. Leave them alone if | |
5658 | that turns out to be the case. */ | |
5659 | if (!is_local) | |
5660 | continue; | |
5661 | ||
5662 | /* LD -> LE */ | |
5663 | tls_set = 0; | |
5664 | tls_clear = TLS_LD; | |
5665 | break; | |
5666 | ||
5667 | case R_PPC_GOT_TLSGD16: | |
5668 | case R_PPC_GOT_TLSGD16_LO: | |
5669 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5670 | /* Fall through. */ |
b7fcf6f6 AM |
5671 | |
5672 | case R_PPC_GOT_TLSGD16_HI: | |
5673 | case R_PPC_GOT_TLSGD16_HA: | |
5674 | if (is_local) | |
5675 | /* GD -> LE */ | |
5676 | tls_set = 0; | |
5677 | else | |
5678 | /* GD -> IE */ | |
5679 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5680 | tls_clear = TLS_GD; | |
5681 | break; | |
5682 | ||
5683 | case R_PPC_GOT_TPREL16: | |
5684 | case R_PPC_GOT_TPREL16_LO: | |
5685 | case R_PPC_GOT_TPREL16_HI: | |
5686 | case R_PPC_GOT_TPREL16_HA: | |
5687 | if (is_local) | |
5688 | { | |
5689 | /* IE -> LE */ | |
5690 | tls_set = 0; | |
5691 | tls_clear = TLS_TPREL; | |
5692 | break; | |
5693 | } | |
5694 | else | |
5695 | continue; | |
5696 | ||
32af9f6e AM |
5697 | case R_PPC_TLSGD: |
5698 | case R_PPC_TLSLD: | |
23cedd1d AM |
5699 | if (rel + 1 < relend |
5700 | && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) | |
5701 | { | |
5702 | if (pass != 0 | |
5703 | && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ) | |
5704 | { | |
5705 | r_type = ELF32_R_TYPE (rel[1].r_info); | |
5706 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
5707 | if (r_symndx >= symtab_hdr->sh_info) | |
5708 | { | |
5709 | struct elf_link_hash_entry **sym_hashes; | |
5710 | ||
5711 | sym_hashes = elf_sym_hashes (ibfd); | |
5712 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5713 | while (h->root.type == bfd_link_hash_indirect | |
5714 | || h->root.type == bfd_link_hash_warning) | |
5715 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5716 | if (h != NULL) | |
5717 | { | |
5718 | struct plt_entry *ent = NULL; | |
5719 | bfd_vma addend = 0; | |
5720 | ||
5721 | if (bfd_link_pic (info)) | |
5722 | addend = rel->r_addend; | |
5723 | ent = find_plt_ent (&h->plt.plist, | |
5724 | got2, addend); | |
5725 | if (ent != NULL | |
5726 | && ent->plt.refcount > 0) | |
5727 | ent->plt.refcount -= 1; | |
5728 | } | |
5729 | } | |
5730 | } | |
5731 | continue; | |
5732 | } | |
32af9f6e AM |
5733 | expecting_tls_get_addr = 2; |
5734 | tls_set = 0; | |
5735 | tls_clear = 0; | |
5736 | break; | |
5737 | ||
b7fcf6f6 | 5738 | default: |
25dbc73a | 5739 | continue; |
b7fcf6f6 | 5740 | } |
25dbc73a | 5741 | |
b7fcf6f6 AM |
5742 | if (pass == 0) |
5743 | { | |
727fc41e | 5744 | if (!expecting_tls_get_addr |
23cedd1d | 5745 | || !sec->has_tls_get_addr_call) |
b7fcf6f6 | 5746 | continue; |
25dbc73a | 5747 | |
3a71aa26 AM |
5748 | if (rel + 1 < relend |
5749 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5750 | htab->tls_get_addr)) | |
5751 | continue; | |
25dbc73a | 5752 | |
b7fcf6f6 AM |
5753 | /* Uh oh, we didn't find the expected call. We |
5754 | could just mark this symbol to exclude it | |
5755 | from tls optimization but it's safer to skip | |
663a1470 | 5756 | the entire optimization. */ |
25f53a85 | 5757 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5758 | "TLS optimization disabled\n"), |
5759 | ibfd, sec, rel->r_offset); | |
5760 | if (elf_section_data (sec)->relocs != relstart) | |
5761 | free (relstart); | |
5762 | return TRUE; | |
b7fcf6f6 | 5763 | } |
25dbc73a | 5764 | |
b7fcf6f6 AM |
5765 | if (h != NULL) |
5766 | { | |
5767 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5768 | got_count = &h->got.refcount; | |
5769 | } | |
5770 | else | |
5771 | { | |
b7fcf6f6 | 5772 | bfd_signed_vma *lgot_refs; |
e054468f | 5773 | struct plt_entry **local_plt; |
bac3c8c5 | 5774 | unsigned char *lgot_masks; |
25dbc73a | 5775 | |
b7fcf6f6 AM |
5776 | lgot_refs = elf_local_got_refcounts (ibfd); |
5777 | if (lgot_refs == NULL) | |
5778 | abort (); | |
e054468f AM |
5779 | local_plt = (struct plt_entry **) |
5780 | (lgot_refs + symtab_hdr->sh_info); | |
bac3c8c5 AM |
5781 | lgot_masks = (unsigned char *) |
5782 | (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5783 | tls_mask = &lgot_masks[r_symndx]; |
5784 | got_count = &lgot_refs[r_symndx]; | |
5785 | } | |
25dbc73a | 5786 | |
37da22e5 AM |
5787 | /* If we don't have old-style __tls_get_addr calls |
5788 | without TLSGD/TLSLD marker relocs, and we haven't | |
5789 | found a new-style __tls_get_addr call with a | |
5790 | marker for this symbol, then we either have a | |
5791 | broken object file or an -mlongcall style | |
5792 | indirect call to __tls_get_addr without a marker. | |
5793 | Disable optimization in this case. */ | |
5794 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
5795 | && !sec->has_tls_get_addr_call | |
5796 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
5797 | != (TLS_TLS | TLS_MARK))) | |
5798 | continue; | |
5799 | ||
5800 | if (expecting_tls_get_addr) | |
5801 | { | |
5802 | struct plt_entry *ent; | |
5803 | bfd_vma addend = 0; | |
5804 | ||
5805 | if (bfd_link_pic (info) | |
23cedd1d AM |
5806 | && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24 |
5807 | || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL)) | |
37da22e5 AM |
5808 | addend = rel[1].r_addend; |
5809 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5810 | got2, addend); | |
5811 | if (ent != NULL && ent->plt.refcount > 0) | |
5812 | ent->plt.refcount -= 1; | |
5813 | ||
5814 | if (expecting_tls_get_addr == 2) | |
5815 | continue; | |
5816 | } | |
5817 | ||
b7fcf6f6 AM |
5818 | if (tls_set == 0) |
5819 | { | |
5820 | /* We managed to get rid of a got entry. */ | |
5821 | if (*got_count > 0) | |
5822 | *got_count -= 1; | |
5823 | } | |
25dbc73a | 5824 | |
b7fcf6f6 AM |
5825 | *tls_mask |= tls_set; |
5826 | *tls_mask &= ~tls_clear; | |
5827 | } | |
25dbc73a | 5828 | |
b7fcf6f6 AM |
5829 | if (elf_section_data (sec)->relocs != relstart) |
5830 | free (relstart); | |
5831 | } | |
b7fcf6f6 | 5832 | } |
9a23f96e | 5833 | htab->do_tls_opt = 1; |
25dbc73a AM |
5834 | return TRUE; |
5835 | } | |
5836 | \f | |
98bbb1b8 | 5837 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 5838 | |
98bbb1b8 AM |
5839 | static asection * |
5840 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 5841 | { |
6061a67d | 5842 | struct elf_dyn_relocs *p; |
625af618 AM |
5843 | |
5844 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5845 | { | |
5846 | asection *s = p->sec->output_section; | |
5847 | ||
98bbb1b8 AM |
5848 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
5849 | return p->sec; | |
625af618 | 5850 | } |
98bbb1b8 | 5851 | return NULL; |
625af618 AM |
5852 | } |
5853 | ||
287c7eaf AM |
5854 | /* Return true if we have dynamic relocs against H or any of its weak |
5855 | aliases, that apply to read-only sections. Cannot be used after | |
5856 | size_dynamic_sections. */ | |
5857 | ||
5858 | static bfd_boolean | |
5859 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5860 | { | |
5861 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
5862 | do | |
5863 | { | |
5864 | if (readonly_dynrelocs (&eh->elf)) | |
5865 | return TRUE; | |
5866 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
5867 | } while (eh != NULL && &eh->elf != h); | |
5868 | ||
5869 | return FALSE; | |
5870 | } | |
5871 | ||
5872 | /* Return whether H has pc-relative dynamic relocs. */ | |
5873 | ||
5874 | static bfd_boolean | |
5875 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
5876 | { | |
5877 | struct elf_dyn_relocs *p; | |
5878 | ||
5879 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5880 | if (p->pc_count != 0) | |
5881 | return TRUE; | |
5882 | return FALSE; | |
5883 | } | |
5884 | ||
25dbc73a AM |
5885 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5886 | regular object. The current definition is in some section of the | |
5887 | dynamic object, but we're not including those sections. We have to | |
5888 | change the definition to something the rest of the link can | |
5889 | understand. */ | |
7fce784e | 5890 | |
25dbc73a AM |
5891 | static bfd_boolean |
5892 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5893 | struct elf_link_hash_entry *h) | |
5894 | { | |
5895 | struct ppc_elf_link_hash_table *htab; | |
5896 | asection *s; | |
7fce784e | 5897 | |
25dbc73a AM |
5898 | #ifdef DEBUG |
5899 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5900 | h->root.root.string); | |
5901 | #endif | |
252b5132 | 5902 | |
25dbc73a AM |
5903 | /* Make sure we know what is going on here. */ |
5904 | htab = ppc_elf_hash_table (info); | |
5905 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5906 | && (h->needs_plt | |
91e21fb7 | 5907 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 5908 | || h->is_weakalias |
25dbc73a AM |
5909 | || (h->def_dynamic |
5910 | && h->ref_regular | |
5911 | && !h->def_regular))); | |
252b5132 | 5912 | |
25dbc73a AM |
5913 | /* Deal with function syms. */ |
5914 | if (h->type == STT_FUNC | |
e054468f | 5915 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5916 | || h->needs_plt) |
5917 | { | |
529fe20e AM |
5918 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
5919 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
5920 | /* Discard dyn_relocs when non-pic if we've decided that a |
5921 | function symbol is local. */ | |
5922 | if (!bfd_link_pic (info) && local) | |
5923 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 5924 | |
25dbc73a AM |
5925 | /* Clear procedure linkage table information for any symbol that |
5926 | won't need a .plt entry. */ | |
a6aa5195 AM |
5927 | struct plt_entry *ent; |
5928 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5929 | if (ent->plt.refcount > 0) | |
5930 | break; | |
5931 | if (ent == NULL | |
2d7ad24e AM |
5932 | || (h->type != STT_GNU_IFUNC |
5933 | && local | |
3e04d765 AM |
5934 | && (htab->can_convert_all_inline_plt |
5935 | || (ppc_elf_hash_entry (h)->tls_mask | |
5936 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
252b5132 | 5937 | { |
25dbc73a | 5938 | /* A PLT entry is not required/allowed when: |
252b5132 | 5939 | |
25dbc73a AM |
5940 | 1. We are not using ld.so; because then the PLT entry |
5941 | can't be set up, so we can't use one. In this case, | |
5942 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5943 | |
25dbc73a AM |
5944 | 2. GC has rendered the entry unused. |
5945 | ||
5946 | 3. We know for certain that a call to this symbol | |
5947 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5948 | h->plt.plist = NULL; |
25dbc73a | 5949 | h->needs_plt = 0; |
d1eca1e4 | 5950 | h->pointer_equality_needed = 0; |
25dbc73a | 5951 | } |
625af618 AM |
5952 | else |
5953 | { | |
d1eca1e4 AM |
5954 | /* Taking a function's address in a read/write section |
5955 | doesn't require us to define the function symbol in the | |
1009ef28 | 5956 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
5957 | be used instead, giving better runtime performance. |
5958 | (Calls via that function pointer don't need to bounce | |
5959 | through the plt call stub.) Similarly, use a dynamic | |
5960 | reloc for a weak reference when possible, allowing the | |
5961 | resolution of the symbol to be set at load time rather | |
5962 | than link time. */ | |
5963 | if ((h->pointer_equality_needed | |
3988aed5 AM |
5964 | || (h->non_got_ref |
5965 | && !h->ref_regular_nonweak | |
5966 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
5967 | && !htab->is_vxworks |
5968 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 5969 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
5970 | { |
5971 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
5972 | /* If we haven't seen a branch reloc and the symbol |
5973 | isn't an ifunc then we don't need a plt entry. */ | |
5974 | if (!h->needs_plt && h->type != STT_GNU_IFUNC) | |
3988aed5 | 5975 | h->plt.plist = NULL; |
d1eca1e4 | 5976 | } |
287c7eaf | 5977 | else if (!bfd_link_pic (info)) |
529fe20e AM |
5978 | /* We are going to be defining the function symbol on the |
5979 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 5980 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 5981 | } |
d3e454b9 | 5982 | h->protected_def = 0; |
3988aed5 | 5983 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 5984 | return TRUE; |
252b5132 | 5985 | } |
25dbc73a | 5986 | else |
a6aa5195 | 5987 | h->plt.plist = NULL; |
252b5132 | 5988 | |
25dbc73a AM |
5989 | /* If this is a weak symbol, and there is a real definition, the |
5990 | processor independent code will have arranged for us to see the | |
5991 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5992 | if (h->is_weakalias) |
252b5132 | 5993 | { |
60d67dc8 AM |
5994 | struct elf_link_hash_entry *def = weakdef (h); |
5995 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5996 | h->root.u.def.section = def->root.u.def.section; | |
5997 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
5998 | if (def->root.u.def.section == htab->elf.sdynbss |
5999 | || def->root.u.def.section == htab->elf.sdynrelro | |
6000 | || def->root.u.def.section == htab->dynsbss) | |
6001 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
6002 | return TRUE; |
6003 | } | |
dc810e39 | 6004 | |
25dbc73a AM |
6005 | /* This is a reference to a symbol defined by a dynamic object which |
6006 | is not a function. */ | |
252b5132 | 6007 | |
25dbc73a AM |
6008 | /* If we are creating a shared library, we must presume that the |
6009 | only references to the symbol are via the global offset table. | |
6010 | For such cases we need not do anything here; the relocations will | |
6011 | be handled correctly by relocate_section. */ | |
0e1862bb | 6012 | if (bfd_link_pic (info)) |
d3e454b9 AM |
6013 | { |
6014 | h->protected_def = 0; | |
6015 | return TRUE; | |
6016 | } | |
252b5132 | 6017 | |
25dbc73a AM |
6018 | /* If there are no references to this symbol that do not use the |
6019 | GOT, we don't need to generate a copy reloc. */ | |
6020 | if (!h->non_got_ref) | |
d3e454b9 AM |
6021 | { |
6022 | h->protected_def = 0; | |
6023 | return TRUE; | |
6024 | } | |
6025 | ||
6026 | /* Protected variables do not work with .dynbss. The copy in | |
6027 | .dynbss won't be used by the shared library with the protected | |
6028 | definition for the variable. Editing to PIC, or text relocations | |
6029 | are preferable to an incorrect program. */ | |
6030 | if (h->protected_def) | |
6031 | { | |
6032 | if (ELIMINATE_COPY_RELOCS | |
6033 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
6034 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
6035 | && htab->params->pic_fixup == 0 | |
6036 | && info->disable_target_specific_optimizations <= 1) | |
6037 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
6038 | return TRUE; |
6039 | } | |
25dbc73a | 6040 | |
a127494f AM |
6041 | /* If -z nocopyreloc was given, we won't generate them either. */ |
6042 | if (info->nocopyreloc) | |
529fe20e | 6043 | return TRUE; |
a127494f | 6044 | |
dce2246a | 6045 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
6046 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
6047 | We can't do this if there are any small data relocations. This | |
6048 | doesn't work on VxWorks, where we can not have dynamic | |
6049 | relocations (other than copy and jump slot relocations) in an | |
6050 | executable. */ | |
4dc4a9a5 | 6051 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 6052 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
6053 | && !htab->is_vxworks |
6054 | && !h->def_regular | |
287c7eaf | 6055 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 6056 | return TRUE; |
252b5132 | 6057 | |
25dbc73a AM |
6058 | /* We must allocate the symbol in our .dynbss section, which will |
6059 | become part of the .bss section of the executable. There will be | |
6060 | an entry for this symbol in the .dynsym section. The dynamic | |
6061 | object will contain position independent code, so all references | |
6062 | from the dynamic object to this symbol will go through the global | |
6063 | offset table. The dynamic linker will use the .dynsym entry to | |
6064 | determine the address it must put in the global offset table, so | |
6065 | both the dynamic object and the regular object will refer to the | |
6066 | same memory location for the variable. | |
6067 | ||
4dc4a9a5 DJ |
6068 | Of course, if the symbol is referenced using SDAREL relocs, we |
6069 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 6070 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 6071 | s = htab->dynsbss; |
5474d94f AM |
6072 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6073 | s = htab->elf.sdynrelro; | |
25dbc73a | 6074 | else |
9d19e4fd | 6075 | s = htab->elf.sdynbss; |
25dbc73a AM |
6076 | BFD_ASSERT (s != NULL); |
6077 | ||
1d7e9d18 | 6078 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
6079 | { |
6080 | asection *srel; | |
6081 | ||
4a7e5234 AM |
6082 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
6083 | linker to copy the initial value out of the dynamic object | |
6084 | and into the runtime process image. */ | |
4dc4a9a5 | 6085 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 6086 | srel = htab->relsbss; |
5474d94f AM |
6087 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6088 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 6089 | else |
9d19e4fd | 6090 | srel = htab->elf.srelbss; |
25dbc73a AM |
6091 | BFD_ASSERT (srel != NULL); |
6092 | srel->size += sizeof (Elf32_External_Rela); | |
6093 | h->needs_copy = 1; | |
6094 | } | |
7619e7c7 | 6095 | |
529fe20e | 6096 | /* We no longer want dyn_relocs. */ |
287c7eaf | 6097 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 6098 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
6099 | } |
6100 | \f | |
ac39eb42 AM |
6101 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
6102 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
6103 | specifying the addend on the plt relocation. For -fpic code, the sym | |
6104 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
6105 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
6106 | |
6107 | static bfd_boolean | |
6108 | add_stub_sym (struct plt_entry *ent, | |
6109 | struct elf_link_hash_entry *h, | |
ac39eb42 | 6110 | struct bfd_link_info *info) |
0ba07910 AM |
6111 | { |
6112 | struct elf_link_hash_entry *sh; | |
6113 | size_t len1, len2, len3; | |
6114 | char *name; | |
ac39eb42 AM |
6115 | const char *stub; |
6116 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6117 | ||
0e1862bb | 6118 | if (bfd_link_pic (info)) |
ac39eb42 AM |
6119 | stub = ".plt_pic32."; |
6120 | else | |
6121 | stub = ".plt_call32."; | |
0ba07910 AM |
6122 | |
6123 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 6124 | len2 = strlen (stub); |
0ba07910 AM |
6125 | len3 = 0; |
6126 | if (ent->sec) | |
6127 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 6128 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
6129 | if (name == NULL) |
6130 | return FALSE; | |
6131 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
6132 | if (ent->sec) | |
6133 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
6134 | memcpy (name + 8 + len3, stub, len2); |
6135 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
6136 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
6137 | if (sh == NULL) | |
6138 | return FALSE; | |
6139 | if (sh->root.type == bfd_link_hash_new) | |
6140 | { | |
6141 | sh->root.type = bfd_link_hash_defined; | |
6142 | sh->root.u.def.section = htab->glink; | |
6143 | sh->root.u.def.value = ent->glink_offset; | |
6144 | sh->ref_regular = 1; | |
6145 | sh->def_regular = 1; | |
6146 | sh->ref_regular_nonweak = 1; | |
6147 | sh->forced_local = 1; | |
6148 | sh->non_elf = 0; | |
2ec55de3 | 6149 | sh->root.linker_def = 1; |
0ba07910 AM |
6150 | } |
6151 | return TRUE; | |
6152 | } | |
6153 | ||
3b36f7e6 AM |
6154 | /* Allocate NEED contiguous space in .got, and return the offset. |
6155 | Handles allocation of the got header when crossing 32k. */ | |
6156 | ||
6157 | static bfd_vma | |
6158 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
6159 | { | |
6160 | bfd_vma where; | |
4a3dc543 | 6161 | unsigned int max_before_header; |
3b36f7e6 | 6162 | |
4a3dc543 | 6163 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 6164 | { |
ce558b89 AM |
6165 | where = htab->elf.sgot->size; |
6166 | htab->elf.sgot->size += need; | |
9d8504b1 | 6167 | } |
3b36f7e6 AM |
6168 | else |
6169 | { | |
4a3dc543 RS |
6170 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
6171 | if (need <= htab->got_gap) | |
3b36f7e6 | 6172 | { |
4a3dc543 RS |
6173 | where = max_before_header - htab->got_gap; |
6174 | htab->got_gap -= need; | |
6175 | } | |
6176 | else | |
6177 | { | |
ce558b89 AM |
6178 | if (htab->elf.sgot->size + need > max_before_header |
6179 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 6180 | { |
ce558b89 AM |
6181 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
6182 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 6183 | } |
ce558b89 AM |
6184 | where = htab->elf.sgot->size; |
6185 | htab->elf.sgot->size += need; | |
3b36f7e6 | 6186 | } |
3b36f7e6 AM |
6187 | } |
6188 | return where; | |
6189 | } | |
6190 | ||
f15d0b54 AM |
6191 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
6192 | TLS_LD is excluded because those go in a special GOT slot. */ | |
6193 | ||
6194 | static inline unsigned int | |
6195 | got_entries_needed (int tls_mask) | |
6196 | { | |
6197 | unsigned int need; | |
6198 | if ((tls_mask & TLS_TLS) == 0) | |
6199 | need = 4; | |
6200 | else | |
6201 | { | |
6202 | need = 0; | |
6203 | if ((tls_mask & TLS_GD) != 0) | |
6204 | need += 8; | |
6205 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6206 | need += 4; | |
6207 | if ((tls_mask & TLS_DTPREL) != 0) | |
6208 | need += 4; | |
6209 | } | |
6210 | return need; | |
6211 | } | |
6212 | ||
6213 | /* Calculate size of relocs needed for symbol given its TLS_MASK and | |
6214 | NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at | |
6215 | link time. */ | |
6216 | ||
6217 | static inline unsigned int | |
6218 | got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known) | |
6219 | { | |
6220 | /* All the entries we allocated need relocs. | |
6221 | Except IE in executable with a local symbol. We could also omit | |
6222 | the DTPREL reloc on the second word of a GD entry under the same | |
6223 | condition as that for IE, but ld.so needs to differentiate | |
6224 | LD and GD entries. */ | |
37da22e5 AM |
6225 | if (known && (tls_mask & TLS_TLS) != 0 |
6226 | && (tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
f15d0b54 AM |
6227 | need -= 4; |
6228 | return need * sizeof (Elf32_External_Rela) / 4; | |
6229 | } | |
6230 | ||
46434633 | 6231 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
6232 | |
6233 | static bfd_boolean | |
46434633 AM |
6234 | ensure_undef_dynamic (struct bfd_link_info *info, |
6235 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
6236 | { |
6237 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6238 | ||
6239 | if (htab->dynamic_sections_created | |
46434633 AM |
6240 | && ((info->dynamic_undefined_weak != 0 |
6241 | && h->root.type == bfd_link_hash_undefweak) | |
6242 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
6243 | && h->dynindx == -1 |
6244 | && !h->forced_local | |
6245 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
6246 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
6247 | return TRUE; | |
6248 | } | |
6249 | ||
25dbc73a | 6250 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 6251 | |
b34976b6 | 6252 | static bfd_boolean |
25dbc73a | 6253 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 6254 | { |
25dbc73a AM |
6255 | struct bfd_link_info *info = inf; |
6256 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 6257 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 6258 | struct elf_dyn_relocs *p; |
f0158f44 | 6259 | bfd_boolean dyn; |
252b5132 | 6260 | |
25dbc73a | 6261 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 6262 | return TRUE; |
252b5132 | 6263 | |
7619e7c7 | 6264 | htab = ppc_elf_hash_table (info); |
25dbc73a | 6265 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
6266 | if (eh->elf.got.refcount > 0 |
6267 | || (ELIMINATE_COPY_RELOCS | |
6268 | && !eh->elf.def_regular | |
6269 | && eh->elf.protected_def | |
6270 | && eh->has_addr16_ha | |
6271 | && eh->has_addr16_lo | |
6272 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 6273 | { |
d6e14abc AM |
6274 | unsigned int need; |
6275 | ||
46434633 AM |
6276 | /* Make sure this symbol is output as a dynamic symbol. */ |
6277 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 6278 | return FALSE; |
252b5132 | 6279 | |
d6e14abc | 6280 | need = 0; |
37da22e5 | 6281 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
25dbc73a | 6282 | { |
f15d0b54 AM |
6283 | if (!eh->elf.def_dynamic) |
6284 | /* We'll just use htab->tlsld_got.offset. This should | |
6285 | always be the case. It's a little odd if we have | |
6286 | a local dynamic reloc against a non-local symbol. */ | |
6287 | htab->tlsld_got.refcount += 1; | |
6288 | else | |
d6e14abc | 6289 | need += 8; |
d6e14abc | 6290 | } |
f15d0b54 | 6291 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
6292 | if (need == 0) |
6293 | eh->elf.got.offset = (bfd_vma) -1; | |
6294 | else | |
6295 | { | |
3b36f7e6 | 6296 | eh->elf.got.offset = allocate_got (htab, need); |
0e1862bb | 6297 | if ((bfd_link_pic (info) |
f0158f44 AM |
6298 | || (htab->elf.dynamic_sections_created |
6299 | && eh->elf.dynindx != -1 | |
6300 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 6301 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 6302 | { |
f15d0b54 AM |
6303 | asection *rsec; |
6304 | bfd_boolean tprel_known = (bfd_link_executable (info) | |
6305 | && SYMBOL_REFERENCES_LOCAL (info, | |
6306 | &eh->elf)); | |
6307 | ||
6308 | need = got_relocs_needed (eh->tls_mask, need, tprel_known); | |
37da22e5 AM |
6309 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD) |
6310 | && eh->elf.def_dynamic) | |
f15d0b54 AM |
6311 | need -= sizeof (Elf32_External_Rela); |
6312 | rsec = htab->elf.srelgot; | |
0bed072f | 6313 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 6314 | rsec = htab->elf.irelplt; |
f15d0b54 | 6315 | rsec->size += need; |
252b5132 | 6316 | } |
25dbc73a AM |
6317 | } |
6318 | } | |
6319 | else | |
6320 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 6321 | |
954b63d4 AM |
6322 | /* If no dynamic sections we can't have dynamic relocs, except for |
6323 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
6324 | if (!htab->elf.dynamic_sections_created |
6325 | && h->type != STT_GNU_IFUNC) | |
6326 | eh->dyn_relocs = NULL; | |
6327 | ||
529fe20e AM |
6328 | /* Discard relocs on undefined symbols that must be local. */ |
6329 | else if (h->root.type == bfd_link_hash_undefined | |
6330 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
6331 | eh->dyn_relocs = NULL; | |
6332 | ||
6333 | /* Also discard relocs on undefined weak syms with non-default | |
6334 | visibility, or when dynamic_undefined_weak says so. */ | |
6335 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
6336 | eh->dyn_relocs = NULL; | |
6337 | ||
f0158f44 | 6338 | if (eh->dyn_relocs == NULL) |
287c7eaf | 6339 | ; |
252b5132 | 6340 | |
25dbc73a AM |
6341 | /* In the shared -Bsymbolic case, discard space allocated for |
6342 | dynamic pc-relative relocs against symbols which turn out to be | |
6343 | defined in regular objects. For the normal shared case, discard | |
6344 | space for relocs that have become local due to symbol visibility | |
6345 | changes. */ | |
f0158f44 | 6346 | else if (bfd_link_pic (info)) |
25dbc73a AM |
6347 | { |
6348 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 6349 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
6350 | generated via assembly. We want calls to protected symbols to |
6351 | resolve directly to the function rather than going via the plt. | |
6352 | If people want function pointer comparisons to work as expected | |
6353 | then they should avoid writing weird assembly. */ | |
529fe20e | 6354 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 6355 | { |
6061a67d | 6356 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
6357 | |
6358 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 6359 | { |
25dbc73a AM |
6360 | p->count -= p->pc_count; |
6361 | p->pc_count = 0; | |
6362 | if (p->count == 0) | |
6363 | *pp = p->next; | |
6364 | else | |
6365 | pp = &p->next; | |
252b5132 | 6366 | } |
25dbc73a | 6367 | } |
252b5132 | 6368 | |
3348747a NS |
6369 | if (htab->is_vxworks) |
6370 | { | |
6061a67d | 6371 | struct elf_dyn_relocs **pp; |
3348747a NS |
6372 | |
6373 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
6374 | { | |
6375 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
6376 | *pp = p->next; | |
6377 | else | |
6378 | pp = &p->next; | |
6379 | } | |
6380 | } | |
6381 | ||
954b63d4 | 6382 | if (eh->dyn_relocs != NULL) |
25dbc73a | 6383 | { |
46434633 AM |
6384 | /* Make sure this symbol is output as a dynamic symbol. */ |
6385 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 6386 | return FALSE; |
25dbc73a AM |
6387 | } |
6388 | } | |
6389 | else if (ELIMINATE_COPY_RELOCS) | |
6390 | { | |
f0158f44 | 6391 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
6392 | symbols which turn out to need copy relocs or are not |
6393 | dynamic. */ | |
529fe20e | 6394 | if (h->dynamic_adjusted |
d3e454b9 | 6395 | && !h->def_regular |
529fe20e | 6396 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
6397 | && !(h->protected_def |
6398 | && eh->has_addr16_ha | |
6399 | && eh->has_addr16_lo | |
6400 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 6401 | { |
46434633 AM |
6402 | /* Make sure this symbol is output as a dynamic symbol. */ |
6403 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 6404 | return FALSE; |
7619e7c7 | 6405 | |
f0158f44 | 6406 | if (h->dynindx == -1) |
287c7eaf | 6407 | eh->dyn_relocs = NULL; |
25dbc73a | 6408 | } |
f0158f44 | 6409 | else |
287c7eaf | 6410 | eh->dyn_relocs = NULL; |
25dbc73a | 6411 | } |
252b5132 | 6412 | |
f0158f44 | 6413 | /* Allocate space. */ |
25dbc73a AM |
6414 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
6415 | { | |
6416 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 6417 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 6418 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
6419 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
6420 | } | |
252b5132 | 6421 | |
2d7ad24e AM |
6422 | /* Handle PLT relocs. Done last, after dynindx has settled. |
6423 | We might need a PLT entry when the symbol | |
6424 | a) is dynamic, or | |
6425 | b) is an ifunc, or | |
6426 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
6427 | d) has plt16 relocs and we are linking statically. */ | |
f0158f44 | 6428 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; |
2d7ad24e AM |
6429 | if (dyn |
6430 | || h->type == STT_GNU_IFUNC | |
6431 | || (h->needs_plt && h->dynamic_adjusted) | |
6432 | || (h->needs_plt | |
6433 | && h->def_regular | |
6434 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 6435 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
6436 | && (ppc_elf_hash_entry (h)->tls_mask |
6437 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
f0158f44 AM |
6438 | { |
6439 | struct plt_entry *ent; | |
6440 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 6441 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
f0158f44 AM |
6442 | |
6443 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6444 | if (ent->plt.refcount > 0) | |
6445 | { | |
6446 | asection *s = htab->elf.splt; | |
6447 | ||
6448 | if (!dyn) | |
2d7ad24e AM |
6449 | { |
6450 | if (h->type == STT_GNU_IFUNC) | |
6451 | s = htab->elf.iplt; | |
6452 | else | |
6453 | s = htab->pltlocal; | |
6454 | } | |
f0158f44 AM |
6455 | |
6456 | if (htab->plt_type == PLT_NEW || !dyn) | |
6457 | { | |
6458 | if (!doneone) | |
6459 | { | |
6460 | plt_offset = s->size; | |
6461 | s->size += 4; | |
6462 | } | |
6463 | ent->plt.offset = plt_offset; | |
6464 | ||
2d7ad24e AM |
6465 | if (s == htab->pltlocal) |
6466 | ent->glink_offset = glink_offset; | |
6467 | else | |
f0158f44 | 6468 | { |
2d7ad24e AM |
6469 | s = htab->glink; |
6470 | if (!doneone || bfd_link_pic (info)) | |
6471 | { | |
6472 | glink_offset = s->size; | |
6473 | s->size += GLINK_ENTRY_SIZE (htab, h); | |
6474 | } | |
6475 | if (!doneone | |
6476 | && !bfd_link_pic (info) | |
6477 | && h->def_dynamic | |
6478 | && !h->def_regular) | |
6479 | { | |
6480 | h->root.u.def.section = s; | |
6481 | h->root.u.def.value = glink_offset; | |
6482 | } | |
6483 | ent->glink_offset = glink_offset; | |
f0158f44 | 6484 | |
2d7ad24e AM |
6485 | if (htab->params->emit_stub_syms |
6486 | && !add_stub_sym (ent, h, info)) | |
6487 | return FALSE; | |
6488 | } | |
f0158f44 AM |
6489 | } |
6490 | else | |
6491 | { | |
6492 | if (!doneone) | |
6493 | { | |
6494 | /* If this is the first .plt entry, make room | |
6495 | for the special first entry. */ | |
6496 | if (s->size == 0) | |
6497 | s->size += htab->plt_initial_entry_size; | |
6498 | ||
6499 | /* The PowerPC PLT is actually composed of two | |
6500 | parts, the first part is 2 words (for a load | |
6501 | and a jump), and then there is a remaining | |
6502 | word available at the end. */ | |
6503 | plt_offset = (htab->plt_initial_entry_size | |
6504 | + (htab->plt_slot_size | |
6505 | * ((s->size | |
6506 | - htab->plt_initial_entry_size) | |
6507 | / htab->plt_entry_size))); | |
6508 | ||
6509 | /* If this symbol is not defined in a regular | |
6510 | file, and we are not generating a shared | |
6511 | library, then set the symbol to this location | |
6512 | in the .plt. This is to avoid text | |
6513 | relocations, and is required to make | |
6514 | function pointers compare as equal between | |
6515 | the normal executable and the shared library. */ | |
6516 | if (! bfd_link_pic (info) | |
6517 | && h->def_dynamic | |
6518 | && !h->def_regular) | |
6519 | { | |
6520 | h->root.u.def.section = s; | |
6521 | h->root.u.def.value = plt_offset; | |
6522 | } | |
6523 | ||
6524 | /* Make room for this entry. */ | |
6525 | s->size += htab->plt_entry_size; | |
6526 | /* After the 8192nd entry, room for two entries | |
6527 | is allocated. */ | |
6528 | if (htab->plt_type == PLT_OLD | |
6529 | && (s->size - htab->plt_initial_entry_size) | |
6530 | / htab->plt_entry_size | |
6531 | > PLT_NUM_SINGLE_ENTRIES) | |
6532 | s->size += htab->plt_entry_size; | |
6533 | } | |
6534 | ent->plt.offset = plt_offset; | |
6535 | } | |
6536 | ||
6537 | /* We also need to make an entry in the .rela.plt section. */ | |
6538 | if (!doneone) | |
6539 | { | |
6540 | if (!dyn) | |
2d7ad24e AM |
6541 | { |
6542 | if (h->type == STT_GNU_IFUNC) | |
6543 | { | |
6544 | s = htab->elf.irelplt; | |
6545 | s->size += sizeof (Elf32_External_Rela); | |
6546 | } | |
6547 | else if (bfd_link_pic (info)) | |
6548 | { | |
6549 | s = htab->relpltlocal; | |
6550 | s->size += sizeof (Elf32_External_Rela); | |
6551 | } | |
6552 | } | |
f0158f44 AM |
6553 | else |
6554 | { | |
6555 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
6556 | ||
6557 | if (htab->plt_type == PLT_VXWORKS) | |
6558 | { | |
6559 | /* Allocate space for the unloaded relocations. */ | |
6560 | if (!bfd_link_pic (info) | |
6561 | && htab->elf.dynamic_sections_created) | |
6562 | { | |
6563 | if (ent->plt.offset | |
6564 | == (bfd_vma) htab->plt_initial_entry_size) | |
6565 | { | |
6566 | htab->srelplt2->size | |
6567 | += (sizeof (Elf32_External_Rela) | |
6568 | * VXWORKS_PLTRESOLVE_RELOCS); | |
6569 | } | |
6570 | ||
6571 | htab->srelplt2->size | |
6572 | += (sizeof (Elf32_External_Rela) | |
6573 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
6574 | } | |
6575 | ||
6576 | /* Every PLT entry has an associated GOT entry in | |
6577 | .got.plt. */ | |
6578 | htab->elf.sgotplt->size += 4; | |
6579 | } | |
6580 | } | |
6581 | doneone = TRUE; | |
6582 | } | |
6583 | } | |
6584 | else | |
6585 | ent->plt.offset = (bfd_vma) -1; | |
6586 | ||
6587 | if (!doneone) | |
6588 | { | |
6589 | h->plt.plist = NULL; | |
6590 | h->needs_plt = 0; | |
6591 | } | |
6592 | } | |
6593 | else | |
6594 | { | |
6595 | h->plt.plist = NULL; | |
6596 | h->needs_plt = 0; | |
6597 | } | |
6598 | ||
25dbc73a AM |
6599 | return TRUE; |
6600 | } | |
7619e7c7 | 6601 | |
625af618 AM |
6602 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6603 | read-only sections. */ | |
7619e7c7 | 6604 | |
25dbc73a | 6605 | static bfd_boolean |
0caf6c82 | 6606 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 6607 | { |
98bbb1b8 | 6608 | asection *sec; |
0caf6c82 | 6609 | |
25dbc73a AM |
6610 | if (h->root.type == bfd_link_hash_indirect) |
6611 | return TRUE; | |
252b5132 | 6612 | |
98bbb1b8 AM |
6613 | sec = readonly_dynrelocs (h); |
6614 | if (sec != NULL) | |
25dbc73a | 6615 | { |
98bbb1b8 AM |
6616 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
6617 | ||
0caf6c82 | 6618 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 6619 | info->callbacks->minfo |
c1c8c1ef | 6620 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 6621 | sec->owner, h->root.root.string, sec); |
ee05f2fe | 6622 | |
625af618 AM |
6623 | /* Not an error, just cut short the traversal. */ |
6624 | return FALSE; | |
25dbc73a AM |
6625 | } |
6626 | return TRUE; | |
6627 | } | |
6628 | ||
6177242a AM |
6629 | static const unsigned char glink_eh_frame_cie[] = |
6630 | { | |
6631 | 0, 0, 0, 16, /* length. */ | |
6632 | 0, 0, 0, 0, /* id. */ | |
6633 | 1, /* CIE version. */ | |
6634 | 'z', 'R', 0, /* Augmentation string. */ | |
6635 | 4, /* Code alignment. */ | |
6636 | 0x7c, /* Data alignment. */ | |
6637 | 65, /* RA reg. */ | |
6638 | 1, /* Augmentation size. */ | |
6639 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6640 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6641 | }; | |
6642 | ||
25dbc73a AM |
6643 | /* Set the sizes of the dynamic sections. */ |
6644 | ||
6645 | static bfd_boolean | |
93d1b056 | 6646 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6647 | struct bfd_link_info *info) |
6648 | { | |
6649 | struct ppc_elf_link_hash_table *htab; | |
6650 | asection *s; | |
6651 | bfd_boolean relocs; | |
6652 | bfd *ibfd; | |
7fce784e | 6653 | |
252b5132 | 6654 | #ifdef DEBUG |
25dbc73a | 6655 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6656 | #endif |
252b5132 | 6657 | |
25dbc73a AM |
6658 | htab = ppc_elf_hash_table (info); |
6659 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6660 | |
25dbc73a AM |
6661 | if (elf_hash_table (info)->dynamic_sections_created) |
6662 | { | |
6663 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 6664 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 6665 | { |
3d4d4302 | 6666 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6667 | BFD_ASSERT (s != NULL); |
6668 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6669 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6670 | } | |
6671 | } | |
252b5132 | 6672 | |
4a3dc543 | 6673 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6674 | htab->got_header_size = 16; |
4a3dc543 | 6675 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6676 | htab->got_header_size = 12; |
252b5132 | 6677 | |
25dbc73a AM |
6678 | /* Set up .got offsets for local syms, and space for local dynamic |
6679 | relocs. */ | |
c72f2fb2 | 6680 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6681 | { |
6682 | bfd_signed_vma *local_got; | |
6683 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6684 | struct plt_entry **local_plt; |
6685 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6686 | char *lgot_masks; |
6687 | bfd_size_type locsymcount; | |
6688 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6689 | |
0c8d6e5c | 6690 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6691 | continue; |
7fce784e | 6692 | |
25dbc73a AM |
6693 | for (s = ibfd->sections; s != NULL; s = s->next) |
6694 | { | |
f95f8542 | 6695 | struct ppc_dyn_relocs *p; |
252b5132 | 6696 | |
f95f8542 | 6697 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6698 | elf_section_data (s)->local_dynrel); |
6699 | p != NULL; | |
6700 | p = p->next) | |
6701 | { | |
6702 | if (!bfd_is_abs_section (p->sec) | |
6703 | && bfd_is_abs_section (p->sec->output_section)) | |
6704 | { | |
6705 | /* Input section has been discarded, either because | |
6706 | it is a copy of a linkonce section or due to | |
6707 | linker script /DISCARD/, so we'll be discarding | |
6708 | the relocs too. */ | |
7fce784e | 6709 | } |
3348747a NS |
6710 | else if (htab->is_vxworks |
6711 | && strcmp (p->sec->output_section->name, | |
6712 | ".tls_vars") == 0) | |
6713 | { | |
6714 | /* Relocations in vxworks .tls_vars sections are | |
6715 | handled specially by the loader. */ | |
6716 | } | |
25dbc73a | 6717 | else if (p->count != 0) |
7fce784e | 6718 | { |
25f23106 | 6719 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6720 | if (p->ifunc) |
ce558b89 | 6721 | sreloc = htab->elf.irelplt; |
25f23106 | 6722 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
6723 | if ((p->sec->output_section->flags |
6724 | & (SEC_READONLY | SEC_ALLOC)) | |
6725 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
6726 | { |
6727 | info->flags |= DF_TEXTREL; | |
871b3ab2 | 6728 | info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), |
0caf6c82 L |
6729 | p->sec->owner, p->sec); |
6730 | } | |
7fce784e | 6731 | } |
252b5132 | 6732 | } |
252b5132 | 6733 | } |
252b5132 | 6734 | |
25dbc73a AM |
6735 | local_got = elf_local_got_refcounts (ibfd); |
6736 | if (!local_got) | |
6737 | continue; | |
252b5132 | 6738 | |
0ffa91dd | 6739 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6740 | locsymcount = symtab_hdr->sh_info; |
6741 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6742 | local_plt = (struct plt_entry **) end_local_got; |
6743 | end_local_plt = local_plt + locsymcount; | |
6744 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6745 | |
25dbc73a AM |
6746 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6747 | if (*local_got > 0) | |
6748 | { | |
f15d0b54 | 6749 | unsigned int need; |
37da22e5 | 6750 | if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
f15d0b54 AM |
6751 | htab->tlsld_got.refcount += 1; |
6752 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
6753 | if (need == 0) |
6754 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6755 | else |
6756 | { | |
3b36f7e6 | 6757 | *local_got = allocate_got (htab, need); |
0e1862bb | 6758 | if (bfd_link_pic (info)) |
0bed072f | 6759 | { |
f15d0b54 AM |
6760 | asection *srel; |
6761 | bfd_boolean tprel_known = bfd_link_executable (info); | |
6762 | ||
6763 | need = got_relocs_needed (*lgot_masks, need, tprel_known); | |
6764 | srel = htab->elf.srelgot; | |
37da22e5 | 6765 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
ce558b89 | 6766 | srel = htab->elf.irelplt; |
f15d0b54 | 6767 | srel->size += need; |
0bed072f | 6768 | } |
25dbc73a AM |
6769 | } |
6770 | } | |
6771 | else | |
6772 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6773 | |
6774 | if (htab->is_vxworks) | |
6775 | continue; | |
6776 | ||
6777 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
2d7ad24e AM |
6778 | lgot_masks = (char *) end_local_plt; |
6779 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
6780 | { |
6781 | struct plt_entry *ent; | |
6782 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 6783 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
e054468f AM |
6784 | |
6785 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6786 | if (ent->plt.refcount > 0) | |
6787 | { | |
2d7ad24e AM |
6788 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
6789 | s = htab->elf.iplt; | |
3e04d765 AM |
6790 | else if (htab->can_convert_all_inline_plt |
6791 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
6792 | { |
6793 | ent->plt.offset = (bfd_vma) -1; | |
6794 | continue; | |
6795 | } | |
6796 | else | |
6797 | s = htab->pltlocal; | |
e054468f AM |
6798 | |
6799 | if (!doneone) | |
6800 | { | |
6801 | plt_offset = s->size; | |
6802 | s->size += 4; | |
6803 | } | |
6804 | ent->plt.offset = plt_offset; | |
6805 | ||
2d7ad24e | 6806 | if (s != htab->pltlocal && (!doneone || bfd_link_pic (info))) |
e054468f | 6807 | { |
2d7ad24e | 6808 | s = htab->glink; |
e054468f | 6809 | glink_offset = s->size; |
9e390558 | 6810 | s->size += GLINK_ENTRY_SIZE (htab, NULL); |
e054468f AM |
6811 | } |
6812 | ent->glink_offset = glink_offset; | |
6813 | ||
6814 | if (!doneone) | |
6815 | { | |
2d7ad24e AM |
6816 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
6817 | { | |
6818 | s = htab->elf.irelplt; | |
6819 | s->size += sizeof (Elf32_External_Rela); | |
6820 | } | |
6821 | else if (bfd_link_pic (info)) | |
6822 | { | |
6823 | s = htab->relpltlocal; | |
6824 | s->size += sizeof (Elf32_External_Rela); | |
6825 | } | |
e054468f AM |
6826 | doneone = TRUE; |
6827 | } | |
6828 | } | |
6829 | else | |
6830 | ent->plt.offset = (bfd_vma) -1; | |
6831 | } | |
25dbc73a | 6832 | } |
252b5132 | 6833 | |
b7fcf6f6 AM |
6834 | /* Allocate space for global sym dynamic relocs. */ |
6835 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6836 | ||
3b36f7e6 AM |
6837 | if (htab->tlsld_got.refcount > 0) |
6838 | { | |
6839 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 6840 | if (bfd_link_pic (info)) |
ce558b89 | 6841 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
6842 | } |
6843 | else | |
6844 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6845 | ||
ce558b89 | 6846 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6847 | { |
6848 | unsigned int g_o_t = 32768; | |
6849 | ||
4d962050 AM |
6850 | /* If we haven't allocated the header, do so now. When we get here, |
6851 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6852 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6853 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 6854 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 6855 | { |
ce558b89 | 6856 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 6857 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6858 | g_o_t += 4; |
ce558b89 | 6859 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 6860 | } |
3b36f7e6 AM |
6861 | |
6862 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6863 | } | |
0e1862bb | 6864 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
6865 | { |
6866 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6867 | |
6868 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6869 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6870 | } |
15bfcc77 AM |
6871 | if (info->emitrelocations) |
6872 | { | |
6873 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6874 | ||
6875 | if (sda != NULL && sda->ref_regular) | |
6876 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6877 | sda = htab->sdata[1].sym; | |
6878 | if (sda != NULL && sda->ref_regular) | |
6879 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6880 | } | |
3b36f7e6 | 6881 | |
e054468f AM |
6882 | if (htab->glink != NULL |
6883 | && htab->glink->size != 0 | |
6884 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6885 | { |
6886 | htab->glink_pltresolve = htab->glink->size; | |
9e390558 AM |
6887 | /* Space for the branch table. */ |
6888 | htab->glink->size | |
6889 | += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4; | |
86b9da88 | 6890 | /* Pad out to align the start of PLTresolve. */ |
5446cbdf AM |
6891 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6892 | ? 63 : 15); | |
d7128ce4 | 6893 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6894 | |
5446cbdf | 6895 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6896 | { |
6897 | struct elf_link_hash_entry *sh; | |
6898 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6899 | TRUE, FALSE, FALSE); | |
6900 | if (sh == NULL) | |
6901 | return FALSE; | |
6902 | if (sh->root.type == bfd_link_hash_new) | |
6903 | { | |
6904 | sh->root.type = bfd_link_hash_defined; | |
6905 | sh->root.u.def.section = htab->glink; | |
6906 | sh->root.u.def.value = htab->glink_pltresolve; | |
6907 | sh->ref_regular = 1; | |
6908 | sh->def_regular = 1; | |
6909 | sh->ref_regular_nonweak = 1; | |
6910 | sh->forced_local = 1; | |
6911 | sh->non_elf = 0; | |
2ec55de3 | 6912 | sh->root.linker_def = 1; |
0ba07910 AM |
6913 | } |
6914 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6915 | TRUE, FALSE, FALSE); | |
6916 | if (sh == NULL) | |
6917 | return FALSE; | |
6918 | if (sh->root.type == bfd_link_hash_new) | |
6919 | { | |
6920 | sh->root.type = bfd_link_hash_defined; | |
6921 | sh->root.u.def.section = htab->glink; | |
6922 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6923 | sh->ref_regular = 1; | |
6924 | sh->def_regular = 1; | |
6925 | sh->ref_regular_nonweak = 1; | |
6926 | sh->forced_local = 1; | |
6927 | sh->non_elf = 0; | |
2ec55de3 | 6928 | sh->root.linker_def = 1; |
0ba07910 AM |
6929 | } |
6930 | } | |
d7128ce4 AM |
6931 | } |
6932 | ||
6177242a AM |
6933 | if (htab->glink != NULL |
6934 | && htab->glink->size != 0 | |
6935 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6936 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6937 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6938 | { |
6939 | s = htab->glink_eh_frame; | |
6940 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 6941 | if (bfd_link_pic (info)) |
6177242a AM |
6942 | { |
6943 | s->size += 4; | |
6944 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6945 | s->size += 4; | |
6946 | } | |
6947 | } | |
6948 | ||
25dbc73a AM |
6949 | /* We've now determined the sizes of the various dynamic sections. |
6950 | Allocate memory for them. */ | |
6951 | relocs = FALSE; | |
6952 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6953 | { |
9d8504b1 PB |
6954 | bfd_boolean strip_section = TRUE; |
6955 | ||
25dbc73a AM |
6956 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6957 | continue; | |
252b5132 | 6958 | |
ce558b89 AM |
6959 | if (s == htab->elf.splt |
6960 | || s == htab->elf.sgot) | |
25dbc73a | 6961 | { |
9d8504b1 PB |
6962 | /* We'd like to strip these sections if they aren't needed, but if |
6963 | we've exported dynamic symbols from them we must leave them. | |
6964 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6965 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6966 | strip_section = FALSE; |
25dbc73a AM |
6967 | /* Strip this section if we don't need it; see the |
6968 | comment below. */ | |
6969 | } | |
ce558b89 | 6970 | else if (s == htab->elf.iplt |
2d7ad24e | 6971 | || s == htab->pltlocal |
e054468f | 6972 | || s == htab->glink |
6177242a | 6973 | || s == htab->glink_eh_frame |
ce558b89 | 6974 | || s == htab->elf.sgotplt |
e054468f | 6975 | || s == htab->sbss |
9d19e4fd | 6976 | || s == htab->elf.sdynbss |
5474d94f | 6977 | || s == htab->elf.sdynrelro |
15bfcc77 | 6978 | || s == htab->dynsbss) |
25dbc73a | 6979 | { |
c9a2f333 | 6980 | /* Strip these too. */ |
25dbc73a | 6981 | } |
15bfcc77 AM |
6982 | else if (s == htab->sdata[0].section |
6983 | || s == htab->sdata[1].section) | |
6984 | { | |
6985 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6986 | } | |
a0f49396 NC |
6987 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6988 | ".rela")) | |
25dbc73a | 6989 | { |
c456f082 | 6990 | if (s->size != 0) |
25dbc73a AM |
6991 | { |
6992 | /* Remember whether there are any relocation sections. */ | |
6993 | relocs = TRUE; | |
252b5132 | 6994 | |
25dbc73a AM |
6995 | /* We use the reloc_count field as a counter if we need |
6996 | to copy relocs into the output file. */ | |
6997 | s->reloc_count = 0; | |
252b5132 RH |
6998 | } |
6999 | } | |
25dbc73a AM |
7000 | else |
7001 | { | |
7002 | /* It's not one of our sections, so don't allocate space. */ | |
7003 | continue; | |
7004 | } | |
252b5132 | 7005 | |
9d8504b1 | 7006 | if (s->size == 0 && strip_section) |
25dbc73a | 7007 | { |
c456f082 AM |
7008 | /* If we don't need this section, strip it from the |
7009 | output file. This is mostly to handle .rela.bss and | |
7010 | .rela.plt. We must create both sections in | |
7011 | create_dynamic_sections, because they must be created | |
7012 | before the linker maps input sections to output | |
7013 | sections. The linker does that before | |
7014 | adjust_dynamic_symbol is called, and it is that | |
7015 | function which decides whether anything needs to go | |
7016 | into these sections. */ | |
8423293d | 7017 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
7018 | continue; |
7019 | } | |
7fce784e | 7020 | |
d7128ce4 | 7021 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
7022 | continue; |
7023 | ||
25dbc73a AM |
7024 | /* Allocate memory for the section contents. */ |
7025 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
7026 | if (s->contents == NULL) | |
7027 | return FALSE; | |
7028 | } | |
252b5132 | 7029 | |
25dbc73a | 7030 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 7031 | { |
25dbc73a AM |
7032 | /* Add some entries to the .dynamic section. We fill in the |
7033 | values later, in ppc_elf_finish_dynamic_sections, but we | |
7034 | must add the entries now so that we get the correct size for | |
7035 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7036 | dynamic linker and used by the debugger. */ | |
7037 | #define add_dynamic_entry(TAG, VAL) \ | |
7038 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 7039 | |
0e1862bb | 7040 | if (bfd_link_executable (info)) |
7619e7c7 | 7041 | { |
25dbc73a AM |
7042 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
7043 | return FALSE; | |
7619e7c7 AM |
7044 | } |
7045 | ||
ce558b89 | 7046 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 7047 | { |
25dbc73a AM |
7048 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7049 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7050 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
7051 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
7052 | return FALSE; | |
7053 | } | |
7619e7c7 | 7054 | |
c7e17e05 AM |
7055 | if (htab->plt_type == PLT_NEW |
7056 | && htab->glink != NULL | |
7057 | && htab->glink->size != 0) | |
d7128ce4 | 7058 | { |
1fe44d79 | 7059 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 7060 | return FALSE; |
5446cbdf | 7061 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
7062 | && htab->tls_get_addr != NULL |
7063 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 7064 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 7065 | return FALSE; |
d7128ce4 AM |
7066 | } |
7067 | ||
25dbc73a AM |
7068 | if (relocs) |
7069 | { | |
7070 | if (!add_dynamic_entry (DT_RELA, 0) | |
7071 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7072 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
7073 | return FALSE; | |
7074 | } | |
7619e7c7 | 7075 | |
25dbc73a AM |
7076 | /* If any dynamic relocs apply to a read-only section, then we |
7077 | need a DT_TEXTREL entry. */ | |
7078 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 7079 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 7080 | info); |
7619e7c7 | 7081 | |
25dbc73a AM |
7082 | if ((info->flags & DF_TEXTREL) != 0) |
7083 | { | |
7084 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
7085 | return FALSE; | |
7619e7c7 | 7086 | } |
7a2b07ff NS |
7087 | if (htab->is_vxworks |
7088 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
7089 | return FALSE; | |
7090 | } | |
25dbc73a AM |
7091 | #undef add_dynamic_entry |
7092 | ||
7e01508c AM |
7093 | if (htab->glink_eh_frame != NULL |
7094 | && htab->glink_eh_frame->contents != NULL) | |
7095 | { | |
7096 | unsigned char *p = htab->glink_eh_frame->contents; | |
7097 | bfd_vma val; | |
7098 | ||
7099 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
7100 | /* CIE length (rewrite in case little-endian). */ | |
7101 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
7102 | p += sizeof (glink_eh_frame_cie); | |
7103 | /* FDE length. */ | |
7104 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
7105 | bfd_put_32 (htab->elf.dynobj, val, p); | |
7106 | p += 4; | |
7107 | /* CIE pointer. */ | |
7108 | val = p - htab->glink_eh_frame->contents; | |
7109 | bfd_put_32 (htab->elf.dynobj, val, p); | |
7110 | p += 4; | |
7111 | /* Offset to .glink. Set later. */ | |
7112 | p += 4; | |
7113 | /* .glink size. */ | |
7114 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
7115 | p += 4; | |
7116 | /* Augmentation. */ | |
7117 | p += 1; | |
7118 | ||
0e1862bb | 7119 | if (bfd_link_pic (info) |
7e01508c AM |
7120 | && htab->elf.dynamic_sections_created) |
7121 | { | |
7122 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
7123 | if (adv < 64) | |
7124 | *p++ = DW_CFA_advance_loc + adv; | |
7125 | else if (adv < 256) | |
7126 | { | |
7127 | *p++ = DW_CFA_advance_loc1; | |
7128 | *p++ = adv; | |
7129 | } | |
7130 | else if (adv < 65536) | |
7131 | { | |
7132 | *p++ = DW_CFA_advance_loc2; | |
7133 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
7134 | p += 2; | |
7135 | } | |
7136 | else | |
7137 | { | |
7138 | *p++ = DW_CFA_advance_loc4; | |
7139 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
7140 | p += 4; | |
7141 | } | |
7142 | *p++ = DW_CFA_register; | |
7143 | *p++ = 65; | |
7144 | p++; | |
7145 | *p++ = DW_CFA_advance_loc + 4; | |
7146 | *p++ = DW_CFA_restore_extended; | |
7147 | *p++ = 65; | |
7148 | } | |
7149 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
7150 | == htab->glink_eh_frame->size); | |
7151 | } | |
7152 | ||
7619e7c7 AM |
7153 | return TRUE; |
7154 | } | |
0eb4a168 | 7155 | |
93d1b056 AM |
7156 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
7157 | if it looks like nothing is using them. */ | |
7158 | ||
7159 | static void | |
7160 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
7161 | { | |
7162 | struct elf_link_hash_entry *sda = lsect->sym; | |
7163 | ||
7164 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
7165 | { | |
7166 | asection *s; | |
7167 | ||
7168 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
7169 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
7170 | { | |
7171 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
7172 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
7173 | { | |
7174 | sda->def_regular = 0; | |
7175 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
7176 | sda->ref_dynamic = 1; | |
7177 | sda->forced_local = 0; | |
7178 | } | |
7179 | } | |
7180 | } | |
7181 | } | |
7182 | ||
7183 | void | |
7184 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
7185 | { | |
7186 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7187 | ||
7188 | if (htab != NULL) | |
7189 | { | |
7190 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
7191 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
7192 | } | |
7193 | } | |
7194 | ||
7195 | ||
0eb4a168 AM |
7196 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
7197 | ||
7198 | static bfd_boolean | |
7199 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
7200 | { | |
7201 | if (h->plt.plist != NULL | |
7202 | && !h->def_regular | |
7203 | && (!h->pointer_equality_needed | |
7204 | || !h->ref_regular_nonweak)) | |
7205 | return FALSE; | |
7206 | ||
7207 | return _bfd_elf_hash_symbol (h); | |
7208 | } | |
25dbc73a AM |
7209 | \f |
7210 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
7211 | ||
01017ef8 NS |
7212 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
7213 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
7214 | static const int shared_stub_entry[] = |
7215 | { | |
7216 | 0x7c0802a6, /* mflr 0 */ | |
7217 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
7218 | 0x7d8802a6, /* mflr 12 */ |
7219 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 7220 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 7221 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 7222 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
7223 | 0x4e800420, /* bctr */ |
7224 | }; | |
7225 | ||
7226 | static const int stub_entry[] = | |
7227 | { | |
01017ef8 NS |
7228 | 0x3d800000, /* lis 12,xxx@ha */ |
7229 | 0x398c0000, /* addi 12,12,xxx@l */ | |
7230 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
7231 | 0x4e800420, /* bctr */ |
7232 | }; | |
7233 | ||
5446cbdf AM |
7234 | struct ppc_elf_relax_info |
7235 | { | |
7236 | unsigned int workaround_size; | |
d3e454b9 | 7237 | unsigned int picfixup_size; |
5446cbdf AM |
7238 | }; |
7239 | ||
7240 | /* This function implements long branch trampolines, and the ppc476 | |
7241 | icache bug workaround. Any section needing trampolines or patch | |
7242 | space for the workaround has its size extended so that we can | |
53291d1f | 7243 | add trampolines at the end of the section. */ |
5446cbdf | 7244 | |
25dbc73a AM |
7245 | static bfd_boolean |
7246 | ppc_elf_relax_section (bfd *abfd, | |
7247 | asection *isec, | |
7248 | struct bfd_link_info *link_info, | |
7249 | bfd_boolean *again) | |
7250 | { | |
d3e454b9 | 7251 | struct one_branch_fixup |
25dbc73a | 7252 | { |
d3e454b9 | 7253 | struct one_branch_fixup *next; |
25dbc73a | 7254 | asection *tsec; |
01017ef8 NS |
7255 | /* Final link, can use the symbol offset. For a |
7256 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
7257 | bfd_vma toff; |
7258 | bfd_vma trampoff; | |
7259 | }; | |
7619e7c7 | 7260 | |
25dbc73a AM |
7261 | Elf_Internal_Shdr *symtab_hdr; |
7262 | bfd_byte *contents = NULL; | |
7263 | Elf_Internal_Sym *isymbuf = NULL; | |
7264 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 7265 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 7266 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 7267 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 7268 | unsigned changes = 0; |
5446cbdf | 7269 | bfd_boolean workaround_change; |
d7128ce4 | 7270 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 7271 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 7272 | asection *got2; |
50248c89 | 7273 | bfd_boolean maybe_pasted; |
7619e7c7 | 7274 | |
25dbc73a | 7275 | *again = FALSE; |
7619e7c7 | 7276 | |
5446cbdf | 7277 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 7278 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 7279 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
7280 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
7281 | || isec->size < 4) | |
25dbc73a | 7282 | return TRUE; |
7619e7c7 | 7283 | |
c8a1f254 NS |
7284 | /* We cannot represent the required PIC relocs in the output, so don't |
7285 | do anything. The linker doesn't support mixing -shared and -r | |
7286 | anyway. */ | |
0e1862bb | 7287 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 7288 | return TRUE; |
5b914448 | 7289 | |
5446cbdf AM |
7290 | htab = ppc_elf_hash_table (link_info); |
7291 | if (htab == NULL) | |
7292 | return TRUE; | |
7293 | ||
7294 | isec->size = (isec->size + 3) & -4; | |
7295 | if (isec->rawsize == 0) | |
7296 | isec->rawsize = isec->size; | |
7297 | trampbase = isec->size; | |
7298 | ||
53291d1f AM |
7299 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
7300 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
7301 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
7302 | ||
d3e454b9 AM |
7303 | if (htab->params->ppc476_workaround |
7304 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
7305 | { |
7306 | if (elf_section_data (isec)->sec_info == NULL) | |
7307 | { | |
5446cbdf AM |
7308 | elf_section_data (isec)->sec_info |
7309 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
7310 | if (elf_section_data (isec)->sec_info == NULL) | |
7311 | return FALSE; | |
7312 | } | |
7313 | relax_info = elf_section_data (isec)->sec_info; | |
7314 | trampbase -= relax_info->workaround_size; | |
7315 | } | |
7316 | ||
50248c89 AM |
7317 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
7318 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 7319 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
7320 | trampoff = trampbase; |
7321 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 7322 | trampoff += 4; |
7619e7c7 | 7323 | |
0ffa91dd | 7324 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
7325 | picfixup_size = 0; |
7326 | if (htab->params->branch_trampolines | |
7327 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 7328 | { |
5446cbdf AM |
7329 | /* Get a copy of the native relocations. */ |
7330 | if (isec->reloc_count != 0) | |
25dbc73a | 7331 | { |
5446cbdf AM |
7332 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
7333 | link_info->keep_memory); | |
7334 | if (internal_relocs == NULL) | |
7335 | goto error_return; | |
25dbc73a | 7336 | } |
7619e7c7 | 7337 | |
5446cbdf AM |
7338 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
7339 | ||
7340 | irelend = internal_relocs + isec->reloc_count; | |
7341 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 7342 | { |
5446cbdf AM |
7343 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
7344 | bfd_vma toff, roff; | |
7345 | asection *tsec; | |
d3e454b9 | 7346 | struct one_branch_fixup *f; |
5446cbdf | 7347 | size_t insn_offset = 0; |
d3e454b9 | 7348 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
7349 | bfd_byte *hit_addr; |
7350 | unsigned long t0; | |
7351 | struct elf_link_hash_entry *h; | |
49c09209 | 7352 | Elf_Internal_Sym *isym; |
5446cbdf AM |
7353 | struct plt_entry **plist; |
7354 | unsigned char sym_type; | |
7355 | ||
7356 | switch (r_type) | |
7357 | { | |
7358 | case R_PPC_REL24: | |
7359 | case R_PPC_LOCAL24PC: | |
7360 | case R_PPC_PLTREL24: | |
23cedd1d | 7361 | case R_PPC_PLTCALL: |
5446cbdf AM |
7362 | max_branch_offset = 1 << 25; |
7363 | break; | |
7364 | ||
7365 | case R_PPC_REL14: | |
7366 | case R_PPC_REL14_BRTAKEN: | |
7367 | case R_PPC_REL14_BRNTAKEN: | |
7368 | max_branch_offset = 1 << 15; | |
7369 | break; | |
7fce784e | 7370 | |
d3e454b9 AM |
7371 | case R_PPC_ADDR16_HA: |
7372 | if (htab->params->pic_fixup > 0) | |
7373 | break; | |
7374 | continue; | |
7375 | ||
5446cbdf AM |
7376 | default: |
7377 | continue; | |
7378 | } | |
7379 | ||
7380 | /* Get the value of the symbol referred to by the reloc. */ | |
49c09209 AM |
7381 | if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf, |
7382 | ELF32_R_SYM (irel->r_info), abfd)) | |
7383 | goto error_return; | |
5446cbdf | 7384 | |
49c09209 AM |
7385 | if (isym != NULL) |
7386 | { | |
7387 | if (tsec != NULL) | |
7388 | ; | |
5446cbdf AM |
7389 | else if (isym->st_shndx == SHN_ABS) |
7390 | tsec = bfd_abs_section_ptr; | |
49199304 AM |
7391 | else |
7392 | continue; | |
5446cbdf AM |
7393 | |
7394 | toff = isym->st_value; | |
7395 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 7396 | } |
25dbc73a | 7397 | else |
5446cbdf | 7398 | { |
49c09209 AM |
7399 | if (tsec != NULL) |
7400 | toff = h->root.u.def.value; | |
5446cbdf AM |
7401 | else if (h->root.type == bfd_link_hash_undefined |
7402 | || h->root.type == bfd_link_hash_undefweak) | |
7403 | { | |
49c09209 AM |
7404 | unsigned long indx; |
7405 | ||
7406 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5446cbdf | 7407 | tsec = bfd_und_section_ptr; |
0e1862bb | 7408 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
7409 | } |
7410 | else | |
7411 | continue; | |
7412 | ||
9f7552cf AM |
7413 | /* If this branch is to __tls_get_addr then we may later |
7414 | optimise away the call. We won't be needing a long- | |
7415 | branch stub in that case. */ | |
0e1862bb | 7416 | if (bfd_link_executable (link_info) |
9f7552cf AM |
7417 | && h == htab->tls_get_addr |
7418 | && irel != internal_relocs) | |
7419 | { | |
7420 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
7421 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
7422 | unsigned int tls_mask = 0; | |
7423 | ||
7424 | /* The previous reloc should be one of R_PPC_TLSGD or | |
7425 | R_PPC_TLSLD, or for older object files, a reloc | |
7426 | on the __tls_get_addr arg setup insn. Get tls | |
7427 | mask bits from the symbol on that reloc. */ | |
7428 | if (t_symndx < symtab_hdr->sh_info) | |
7429 | { | |
7430 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
7431 | ||
7432 | if (local_got_offsets != NULL) | |
7433 | { | |
7434 | struct plt_entry **local_plt = (struct plt_entry **) | |
7435 | (local_got_offsets + symtab_hdr->sh_info); | |
7436 | char *lgot_masks = (char *) | |
7437 | (local_plt + symtab_hdr->sh_info); | |
7438 | tls_mask = lgot_masks[t_symndx]; | |
7439 | } | |
7440 | } | |
7441 | else | |
7442 | { | |
7443 | struct elf_link_hash_entry *th | |
7444 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
7445 | ||
7446 | while (th->root.type == bfd_link_hash_indirect | |
7447 | || th->root.type == bfd_link_hash_warning) | |
7448 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
7449 | ||
7450 | tls_mask | |
7451 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
7452 | } | |
7453 | ||
7454 | /* The mask bits tell us if the call will be | |
7455 | optimised away. */ | |
7456 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
7457 | && (t_rtype == R_PPC_TLSGD | |
7458 | || t_rtype == R_PPC_GOT_TLSGD16 | |
7459 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
7460 | continue; | |
7461 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
7462 | && (t_rtype == R_PPC_TLSLD | |
7463 | || t_rtype == R_PPC_GOT_TLSLD16 | |
7464 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
7465 | continue; | |
7466 | } | |
7467 | ||
5446cbdf AM |
7468 | sym_type = h->type; |
7469 | } | |
7619e7c7 | 7470 | |
d3e454b9 AM |
7471 | if (r_type == R_PPC_ADDR16_HA) |
7472 | { | |
7473 | if (h != NULL | |
7474 | && !h->def_regular | |
7475 | && h->protected_def | |
7476 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7477 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
7478 | picfixup_size += 12; | |
7479 | continue; | |
7480 | } | |
7481 | ||
5446cbdf AM |
7482 | /* The condition here under which we call find_plt_ent must |
7483 | match that in relocate_section. If we call find_plt_ent here | |
7484 | but not in relocate_section, or vice versa, then the branch | |
7485 | destination used here may be incorrect. */ | |
7486 | plist = NULL; | |
7487 | if (h != NULL) | |
25dbc73a | 7488 | { |
5446cbdf AM |
7489 | /* We know is_branch_reloc (r_type) is true. */ |
7490 | if (h->type == STT_GNU_IFUNC | |
7491 | || r_type == R_PPC_PLTREL24) | |
7492 | plist = &h->plt.plist; | |
25dbc73a | 7493 | } |
5446cbdf AM |
7494 | else if (sym_type == STT_GNU_IFUNC |
7495 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 7496 | { |
5446cbdf AM |
7497 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
7498 | struct plt_entry **local_plt = (struct plt_entry **) | |
7499 | (local_got_offsets + symtab_hdr->sh_info); | |
7500 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 7501 | } |
5446cbdf | 7502 | if (plist != NULL) |
a9585d22 | 7503 | { |
5446cbdf AM |
7504 | bfd_vma addend = 0; |
7505 | struct plt_entry *ent; | |
7506 | ||
0e1862bb | 7507 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
7508 | addend = irel->r_addend; |
7509 | ent = find_plt_ent (plist, got2, addend); | |
7510 | if (ent != NULL) | |
a9585d22 | 7511 | { |
5446cbdf AM |
7512 | if (htab->plt_type == PLT_NEW |
7513 | || h == NULL | |
7514 | || !htab->elf.dynamic_sections_created | |
7515 | || h->dynindx == -1) | |
7516 | { | |
7517 | tsec = htab->glink; | |
7518 | toff = ent->glink_offset; | |
7519 | } | |
7520 | else | |
7521 | { | |
ce558b89 | 7522 | tsec = htab->elf.splt; |
5446cbdf AM |
7523 | toff = ent->plt.offset; |
7524 | } | |
de972ffa AM |
7525 | } |
7526 | } | |
de972ffa | 7527 | |
5446cbdf AM |
7528 | /* If the branch and target are in the same section, you have |
7529 | no hope of adding stubs. We'll error out later should the | |
7530 | branch overflow. */ | |
7531 | if (tsec == isec) | |
7532 | continue; | |
25dbc73a | 7533 | |
49199304 AM |
7534 | /* toff is used for the symbol index when the symbol is |
7535 | undefined and we're doing a relocatable link, so we can't | |
7536 | support addends. It would be possible to do so by | |
7537 | putting the addend in one_branch_fixup but addends on | |
7538 | branches are rare so it hardly seems worth supporting. */ | |
7539 | if (bfd_link_relocatable (link_info) | |
7540 | && tsec == bfd_und_section_ptr | |
7541 | && r_type != R_PPC_PLTREL24 | |
7542 | && irel->r_addend != 0) | |
7543 | continue; | |
7544 | ||
5446cbdf AM |
7545 | /* There probably isn't any reason to handle symbols in |
7546 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7547 | attribute for a code section, and we are only looking at | |
7548 | branches. However, implement it correctly here as a | |
7549 | reference for other target relax_section functions. */ | |
7550 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7551 | { | |
7552 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7553 | adjusted, so all references to such symbols need to be | |
7554 | passed through _bfd_merged_section_offset. (Later, in | |
7555 | relocate_section, all SEC_MERGE symbols *except* for | |
7556 | section symbols have been adjusted.) | |
7557 | ||
7558 | gas may reduce relocations against symbols in SEC_MERGE | |
7559 | sections to a relocation against the section symbol when | |
7560 | the original addend was zero. When the reloc is against | |
7561 | a section symbol we should include the addend in the | |
7562 | offset passed to _bfd_merged_section_offset, since the | |
7563 | location of interest is the original symbol. On the | |
7564 | other hand, an access to "sym+addend" where "sym" is not | |
7565 | a section symbol should not include the addend; Such an | |
7566 | access is presumed to be an offset from "sym"; The | |
7567 | location of interest is just "sym". */ | |
49199304 AM |
7568 | if (sym_type == STT_SECTION |
7569 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
7570 | toff += irel->r_addend; |
7571 | ||
7572 | toff | |
7573 | = _bfd_merged_section_offset (abfd, &tsec, | |
7574 | elf_section_data (tsec)->sec_info, | |
7575 | toff); | |
7576 | ||
49199304 AM |
7577 | if (sym_type != STT_SECTION |
7578 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
7579 | toff += irel->r_addend; |
7580 | } | |
7581 | /* PLTREL24 addends are special. */ | |
7582 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7583 | toff += irel->r_addend; |
7619e7c7 | 7584 | |
5446cbdf | 7585 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 7586 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
7587 | && tsec == bfd_und_section_ptr) |
7588 | || tsec->output_section == NULL | |
7589 | || (tsec->owner != NULL | |
7590 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7591 | continue; | |
7619e7c7 | 7592 | |
5446cbdf | 7593 | roff = irel->r_offset; |
7de713b9 | 7594 | |
49199304 AM |
7595 | /* Avoid creating a lot of unnecessary fixups when |
7596 | relocatable if the output section size is such that a | |
7597 | fixup can be created at final link. | |
7598 | The max_branch_offset adjustment allows for some number | |
7599 | of other fixups being needed at final link. */ | |
7600 | if (bfd_link_relocatable (link_info) | |
7601 | && (isec->output_section->rawsize - (isec->output_offset + roff) | |
7602 | < max_branch_offset - (max_branch_offset >> 4))) | |
7603 | continue; | |
7604 | ||
5446cbdf AM |
7605 | /* If the branch is in range, no need to do anything. */ |
7606 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 7607 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
7608 | /* A relocatable link may have sections moved during |
7609 | final link, so do not presume they remain in range. */ | |
7610 | || tsec->output_section == isec->output_section)) | |
7611 | { | |
7612 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7613 | |
5446cbdf AM |
7614 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7615 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7616 | if (symaddr - reladdr + max_branch_offset | |
7617 | < 2 * max_branch_offset) | |
7618 | continue; | |
7619 | } | |
01017ef8 | 7620 | |
5446cbdf | 7621 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 7622 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
7623 | if (f->tsec == tsec && f->toff == toff) |
7624 | break; | |
252b5132 | 7625 | |
5446cbdf AM |
7626 | if (f == NULL) |
7627 | { | |
7628 | size_t size; | |
7629 | unsigned long stub_rtype; | |
25dbc73a | 7630 | |
5446cbdf AM |
7631 | val = trampoff - roff; |
7632 | if (val >= max_branch_offset) | |
7633 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7634 | one. We'll report an error later. */ | |
7635 | continue; | |
252b5132 | 7636 | |
0e1862bb | 7637 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
7638 | { |
7639 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7640 | insn_offset = 12; | |
7641 | } | |
7642 | else | |
7643 | { | |
7644 | size = 4 * ARRAY_SIZE (stub_entry); | |
7645 | insn_offset = 0; | |
7646 | } | |
7647 | stub_rtype = R_PPC_RELAX; | |
ce558b89 | 7648 | if (tsec == htab->elf.splt |
5446cbdf AM |
7649 | || tsec == htab->glink) |
7650 | { | |
7651 | stub_rtype = R_PPC_RELAX_PLT; | |
7652 | if (r_type == R_PPC_PLTREL24) | |
7653 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
7654 | } | |
252b5132 | 7655 | |
5446cbdf AM |
7656 | /* Hijack the old relocation. Since we need two |
7657 | relocations for this use a "composite" reloc. */ | |
7658 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7659 | stub_rtype); | |
7660 | irel->r_offset = trampoff + insn_offset; | |
7661 | if (r_type == R_PPC_PLTREL24 | |
7662 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
7663 | irel->r_addend = 0; | |
7664 | ||
7665 | /* Record the fixup so we don't do it again this section. */ | |
7666 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 7667 | f->next = branch_fixups; |
5446cbdf AM |
7668 | f->tsec = tsec; |
7669 | f->toff = toff; | |
7670 | f->trampoff = trampoff; | |
d3e454b9 | 7671 | branch_fixups = f; |
5446cbdf AM |
7672 | |
7673 | trampoff += size; | |
7674 | changes++; | |
25dbc73a AM |
7675 | } |
7676 | else | |
7677 | { | |
5446cbdf AM |
7678 | val = f->trampoff - roff; |
7679 | if (val >= max_branch_offset) | |
7680 | continue; | |
252b5132 | 7681 | |
5446cbdf AM |
7682 | /* Nop out the reloc, since we're finalizing things here. */ |
7683 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7684 | } | |
252b5132 | 7685 | |
5446cbdf AM |
7686 | /* Get the section contents. */ |
7687 | if (contents == NULL) | |
25dbc73a | 7688 | { |
5446cbdf AM |
7689 | /* Get cached copy if it exists. */ |
7690 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
7691 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 7692 | /* Go get them off disk. */ |
5446cbdf | 7693 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
7694 | goto error_return; |
7695 | } | |
252b5132 | 7696 | |
5446cbdf AM |
7697 | /* Fix up the existing branch to hit the trampoline. */ |
7698 | hit_addr = contents + roff; | |
7699 | switch (r_type) | |
7700 | { | |
7701 | case R_PPC_REL24: | |
7702 | case R_PPC_LOCAL24PC: | |
7703 | case R_PPC_PLTREL24: | |
7704 | t0 = bfd_get_32 (abfd, hit_addr); | |
7705 | t0 &= ~0x3fffffc; | |
7706 | t0 |= val & 0x3fffffc; | |
7707 | bfd_put_32 (abfd, t0, hit_addr); | |
7708 | break; | |
252b5132 | 7709 | |
5446cbdf AM |
7710 | case R_PPC_REL14: |
7711 | case R_PPC_REL14_BRTAKEN: | |
7712 | case R_PPC_REL14_BRNTAKEN: | |
7713 | t0 = bfd_get_32 (abfd, hit_addr); | |
7714 | t0 &= ~0xfffc; | |
7715 | t0 |= val & 0xfffc; | |
7716 | bfd_put_32 (abfd, t0, hit_addr); | |
7717 | break; | |
7718 | } | |
25dbc73a | 7719 | } |
252b5132 | 7720 | |
d3e454b9 | 7721 | while (branch_fixups != NULL) |
25dbc73a | 7722 | { |
d3e454b9 AM |
7723 | struct one_branch_fixup *f = branch_fixups; |
7724 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
7725 | free (f); |
7726 | } | |
5446cbdf | 7727 | } |
252b5132 | 7728 | |
5446cbdf AM |
7729 | workaround_change = FALSE; |
7730 | newsize = trampoff; | |
795bc6b3 | 7731 | if (htab->params->ppc476_workaround |
0e1862bb | 7732 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 7733 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
7734 | { |
7735 | bfd_vma addr, end_addr; | |
7736 | unsigned int crossings; | |
795bc6b3 | 7737 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
7738 | |
7739 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 7740 | end_addr = addr + trampoff; |
5446cbdf | 7741 | addr &= -pagesize; |
795bc6b3 | 7742 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
7743 | if (crossings != 0) |
7744 | { | |
7745 | /* Keep space aligned, to ensure the patch code itself does | |
7746 | not cross a page. Don't decrease size calculated on a | |
7747 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 7748 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
7749 | newsize += crossings * 16; |
7750 | if (relax_info->workaround_size < newsize) | |
7751 | { | |
7752 | relax_info->workaround_size = newsize; | |
7753 | workaround_change = TRUE; | |
5446cbdf AM |
7754 | } |
7755 | /* Ensure relocate_section is called. */ | |
7756 | isec->flags |= SEC_RELOC; | |
7757 | } | |
7758 | newsize = trampoff + relax_info->workaround_size; | |
7759 | } | |
7760 | ||
d3e454b9 AM |
7761 | if (htab->params->pic_fixup > 0) |
7762 | { | |
7763 | picfixup_size -= relax_info->picfixup_size; | |
7764 | if (picfixup_size != 0) | |
7765 | relax_info->picfixup_size += picfixup_size; | |
7766 | newsize += relax_info->picfixup_size; | |
7767 | } | |
7768 | ||
7769 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
7770 | isec->size = newsize; |
7771 | ||
25dbc73a AM |
7772 | if (isymbuf != NULL |
7773 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 7774 | { |
25dbc73a AM |
7775 | if (! link_info->keep_memory) |
7776 | free (isymbuf); | |
252b5132 | 7777 | else |
25dbc73a AM |
7778 | { |
7779 | /* Cache the symbols for elf_link_input_bfd. */ | |
7780 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
7781 | } | |
252b5132 RH |
7782 | } |
7783 | ||
25dbc73a AM |
7784 | if (contents != NULL |
7785 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7786 | { | |
53291d1f | 7787 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
7788 | free (contents); |
7789 | else | |
7790 | { | |
7791 | /* Cache the section contents for elf_link_input_bfd. */ | |
7792 | elf_section_data (isec)->this_hdr.contents = contents; | |
7793 | } | |
7794 | } | |
252b5132 | 7795 | |
d3e454b9 | 7796 | changes += picfixup_size; |
9bc4e62b | 7797 | if (changes != 0) |
25dbc73a | 7798 | { |
9bc4e62b NS |
7799 | /* Append sufficient NOP relocs so we can write out relocation |
7800 | information for the trampolines. */ | |
d4730f92 | 7801 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
7802 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
7803 | * sizeof (*new_relocs)); | |
7804 | unsigned ix; | |
5b914448 | 7805 | |
9bc4e62b NS |
7806 | if (!new_relocs) |
7807 | goto error_return; | |
7808 | memcpy (new_relocs, internal_relocs, | |
7809 | isec->reloc_count * sizeof (*new_relocs)); | |
7810 | for (ix = changes; ix--;) | |
7811 | { | |
7812 | irel = new_relocs + ix + isec->reloc_count; | |
7813 | ||
7814 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7815 | } | |
7816 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 7817 | free (internal_relocs); |
9bc4e62b NS |
7818 | elf_section_data (isec)->relocs = new_relocs; |
7819 | isec->reloc_count += changes; | |
d4730f92 BS |
7820 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
7821 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 7822 | } |
5446cbdf AM |
7823 | else if (internal_relocs != NULL |
7824 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 7825 | free (internal_relocs); |
252b5132 | 7826 | |
5446cbdf | 7827 | *again = changes != 0 || workaround_change; |
b34976b6 | 7828 | return TRUE; |
25dbc73a AM |
7829 | |
7830 | error_return: | |
d3e454b9 | 7831 | while (branch_fixups != NULL) |
5446cbdf | 7832 | { |
d3e454b9 AM |
7833 | struct one_branch_fixup *f = branch_fixups; |
7834 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
7835 | free (f); |
7836 | } | |
25dbc73a AM |
7837 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
7838 | free (isymbuf); | |
7839 | if (contents != NULL | |
7840 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7841 | free (contents); | |
7842 | if (internal_relocs != NULL | |
7843 | && elf_section_data (isec)->relocs != internal_relocs) | |
7844 | free (internal_relocs); | |
7845 | return FALSE; | |
252b5132 | 7846 | } |
252b5132 | 7847 | \f |
8a696751 AM |
7848 | /* What to do when ld finds relocations against symbols defined in |
7849 | discarded sections. */ | |
7850 | ||
7851 | static unsigned int | |
7852 | ppc_elf_action_discarded (asection *sec) | |
7853 | { | |
7854 | if (strcmp (".fixup", sec->name) == 0) | |
7855 | return 0; | |
7856 | ||
7857 | if (strcmp (".got2", sec->name) == 0) | |
7858 | return 0; | |
7859 | ||
7860 | return _bfd_elf_default_action_discarded (sec); | |
7861 | } | |
c9a2f333 | 7862 | \f |
25dbc73a | 7863 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 7864 | |
25dbc73a | 7865 | static bfd_vma |
76750a2f | 7866 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
7867 | elf_linker_section_t *lsect, |
7868 | struct elf_link_hash_entry *h, | |
7869 | bfd_vma relocation, | |
2bb04cf2 | 7870 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
7871 | { |
7872 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 7873 | |
25dbc73a | 7874 | BFD_ASSERT (lsect != NULL); |
252b5132 | 7875 | |
25dbc73a | 7876 | if (h != NULL) |
252b5132 | 7877 | { |
25dbc73a AM |
7878 | /* Handle global symbol. */ |
7879 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 7880 | |
25dbc73a | 7881 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
7882 | BFD_ASSERT (eh->elf.def_regular); |
7883 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
7884 | } |
7885 | else | |
7886 | { | |
7887 | /* Handle local symbol. */ | |
7888 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 7889 | |
0c8d6e5c | 7890 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 7891 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
7892 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
7893 | } | |
252b5132 | 7894 | |
76750a2f AM |
7895 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
7896 | rel->r_addend, | |
7897 | lsect); | |
7898 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 7899 | |
76750a2f AM |
7900 | /* Offset will always be a multiple of four, so use the bottom bit |
7901 | as a "written" flag. */ | |
7902 | if ((linker_section_ptr->offset & 1) == 0) | |
7903 | { | |
7904 | bfd_put_32 (lsect->section->owner, | |
7905 | relocation + linker_section_ptr->addend, | |
7906 | lsect->section->contents + linker_section_ptr->offset); | |
7907 | linker_section_ptr->offset += 1; | |
252b5132 RH |
7908 | } |
7909 | ||
bd6c6e2b AM |
7910 | relocation = (lsect->section->output_section->vma |
7911 | + lsect->section->output_offset | |
76750a2f | 7912 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 7913 | - SYM_VAL (lsect->sym)); |
252b5132 | 7914 | |
25dbc73a AM |
7915 | #ifdef DEBUG |
7916 | fprintf (stderr, | |
7917 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
7918 | lsect->name, (long) relocation, (long) relocation); | |
7919 | #endif | |
252b5132 | 7920 | |
bd6c6e2b | 7921 | return relocation; |
252b5132 | 7922 | } |
25dbc73a | 7923 | |
e054468f AM |
7924 | #define PPC_LO(v) ((v) & 0xffff) |
7925 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7926 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7927 | ||
7928 | static void | |
9e390558 AM |
7929 | write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, |
7930 | asection *plt_sec, unsigned char *p, | |
e054468f AM |
7931 | struct bfd_link_info *info) |
7932 | { | |
7933 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7934 | bfd *output_bfd = info->output_bfd; | |
7935 | bfd_vma plt; | |
9e390558 AM |
7936 | unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h); |
7937 | ||
7938 | if (h != NULL | |
7939 | && h == htab->tls_get_addr | |
7940 | && !htab->params->no_tls_get_addr_opt) | |
7941 | { | |
7942 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
7943 | p += 4; | |
7944 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
7945 | p += 4; | |
7946 | bfd_put_32 (output_bfd, MR_0_3, p); | |
7947 | p += 4; | |
7948 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
7949 | p += 4; | |
7950 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
7951 | p += 4; | |
7952 | bfd_put_32 (output_bfd, BEQLR, p); | |
7953 | p += 4; | |
7954 | bfd_put_32 (output_bfd, MR_3_0, p); | |
7955 | p += 4; | |
7956 | bfd_put_32 (output_bfd, NOP, p); | |
7957 | p += 4; | |
7958 | } | |
e054468f AM |
7959 | |
7960 | plt = ((ent->plt.offset & ~1) | |
7961 | + plt_sec->output_section->vma | |
7962 | + plt_sec->output_offset); | |
e054468f | 7963 | |
0e1862bb | 7964 | if (bfd_link_pic (info)) |
e054468f AM |
7965 | { |
7966 | bfd_vma got = 0; | |
7967 | ||
7968 | if (ent->addend >= 32768) | |
7969 | got = (ent->addend | |
7970 | + ent->sec->output_section->vma | |
7971 | + ent->sec->output_offset); | |
7972 | else if (htab->elf.hgot != NULL) | |
7973 | got = SYM_VAL (htab->elf.hgot); | |
7974 | ||
7975 | plt -= got; | |
7976 | ||
7977 | if (plt + 0x8000 < 0x10000) | |
9e390558 | 7978 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); |
e054468f AM |
7979 | else |
7980 | { | |
7981 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7982 | p += 4; | |
7983 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
e054468f AM |
7984 | } |
7985 | } | |
7986 | else | |
7987 | { | |
7988 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7989 | p += 4; | |
7990 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
9e390558 AM |
7991 | } |
7992 | p += 4; | |
7993 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7994 | p += 4; | |
407aa07c AM |
7995 | bfd_put_32 (output_bfd, BCTR, p); |
7996 | p += 4; | |
9e390558 AM |
7997 | while (p < end) |
7998 | { | |
7999 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); | |
e054468f AM |
8000 | p += 4; |
8001 | } | |
8002 | } | |
8003 | ||
bd6c6e2b AM |
8004 | /* Return true if symbol is defined statically. */ |
8005 | ||
8006 | static bfd_boolean | |
8007 | is_static_defined (struct elf_link_hash_entry *h) | |
8008 | { | |
8009 | return ((h->root.type == bfd_link_hash_defined | |
8010 | || h->root.type == bfd_link_hash_defweak) | |
8011 | && h->root.u.def.section != NULL | |
8012 | && h->root.u.def.section->output_section != NULL); | |
8013 | } | |
8014 | ||
2d0f3896 AM |
8015 | /* If INSN is an opcode that may be used with an @tls operand, return |
8016 | the transformed insn for TLS optimisation, otherwise return 0. If | |
8017 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
8018 | ||
8019 | unsigned int | |
8020 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
8021 | { | |
8022 | unsigned int rtra; | |
8023 | ||
8024 | if ((insn & (0x3f << 26)) != 31 << 26) | |
8025 | return 0; | |
8026 | ||
8027 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
8028 | rtra = insn & ((1 << 26) - (1 << 16)); | |
8029 | else if (((insn >> 16) & 0x1f) == reg) | |
8030 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
8031 | else | |
8032 | return 0; | |
8033 | ||
8034 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
8035 | /* add -> addi. */ | |
8036 | insn = 14 << 26; | |
8037 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
8038 | && ((insn & (0x1f << 6)) < 14 << 6 | |
8039 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
8040 | && (insn & (0x1f << 6)) < 24 << 6))) | |
8041 | /* load and store indexed -> dform. */ | |
8042 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
8043 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
8044 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
8045 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
8046 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
8047 | /* lwax -> lwa. */ | |
8048 | insn = (58 << 26) | 2; | |
8049 | else | |
8050 | return 0; | |
8051 | insn |= rtra; | |
8052 | return insn; | |
8053 | } | |
8054 | ||
766bc656 AM |
8055 | /* If INSN is an opcode that may be used with an @tprel operand, return |
8056 | the transformed insn for an undefined weak symbol, ie. with the | |
8057 | thread pointer REG operand removed. Otherwise return 0. */ | |
8058 | ||
8059 | unsigned int | |
8060 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
8061 | { | |
8062 | if ((insn & (0x1f << 16)) == reg << 16 | |
8063 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8064 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
8065 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8066 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8067 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8068 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8069 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8070 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8071 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8072 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8073 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8074 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8075 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8076 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8077 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8078 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8079 | && (insn & 3) != 1) | |
8080 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8081 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
8082 | { | |
8083 | insn &= ~(0x1f << 16); | |
8084 | } | |
8085 | else if ((insn & (0x1f << 21)) == reg << 21 | |
8086 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
8087 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
8088 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
8089 | { | |
8090 | insn &= ~(0x1f << 21); | |
8091 | insn |= (insn & (0x1f << 16)) << 5; | |
8092 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
8093 | insn -= 2 >> 26; /* convert to ori,oris */ | |
8094 | } | |
8095 | else | |
8096 | insn = 0; | |
8097 | return insn; | |
8098 | } | |
8099 | ||
1fe532cf AM |
8100 | static bfd_boolean |
8101 | is_insn_ds_form (unsigned int insn) | |
8102 | { | |
8103 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
8104 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
8105 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
8106 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
8107 | } | |
8108 | ||
8109 | static bfd_boolean | |
8110 | is_insn_dq_form (unsigned int insn) | |
8111 | { | |
a680de9a PB |
8112 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
8113 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
8114 | && (insn & 3) == 1)); | |
1fe532cf AM |
8115 | } |
8116 | ||
252b5132 RH |
8117 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
8118 | to handle the relocations for a section. | |
8119 | ||
8120 | The relocs are always passed as Rela structures; if the section | |
8121 | actually uses Rel structures, the r_addend field will always be | |
8122 | zero. | |
8123 | ||
8124 | This function is responsible for adjust the section contents as | |
8125 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 8126 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
8127 | necessary. |
8128 | ||
8129 | This function does not have to worry about setting the reloc | |
8130 | address or the reloc symbol index. | |
8131 | ||
8132 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
8133 | ||
8134 | LOCAL_SECTIONS is an array giving the section in the input file | |
8135 | corresponding to the st_shndx field of each local symbol. | |
8136 | ||
8137 | The global hash table entry for the global symbols can be found | |
8138 | via elf_sym_hashes (input_bfd). | |
8139 | ||
1049f94e | 8140 | When generating relocatable output, this function must handle |
252b5132 RH |
8141 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
8142 | going to be the section symbol corresponding to the output | |
8143 | section, which means that the addend must be adjusted | |
8144 | accordingly. */ | |
8145 | ||
b34976b6 | 8146 | static bfd_boolean |
55fd94b0 AM |
8147 | ppc_elf_relocate_section (bfd *output_bfd, |
8148 | struct bfd_link_info *info, | |
8149 | bfd *input_bfd, | |
8150 | asection *input_section, | |
8151 | bfd_byte *contents, | |
8152 | Elf_Internal_Rela *relocs, | |
8153 | Elf_Internal_Sym *local_syms, | |
8154 | asection **local_sections) | |
252b5132 | 8155 | { |
7619e7c7 AM |
8156 | Elf_Internal_Shdr *symtab_hdr; |
8157 | struct elf_link_hash_entry **sym_hashes; | |
8158 | struct ppc_elf_link_hash_table *htab; | |
8159 | Elf_Internal_Rela *rel; | |
c316a17c | 8160 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
8161 | Elf_Internal_Rela *relend; |
8162 | Elf_Internal_Rela outrel; | |
f95f8542 | 8163 | asection *got2; |
252b5132 | 8164 | bfd_vma *local_got_offsets; |
b34976b6 | 8165 | bfd_boolean ret = TRUE; |
95f0d0d2 | 8166 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 8167 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
8168 | unsigned int picfixup_size = 0; |
8169 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 8170 | |
252b5132 | 8171 | #ifdef DEBUG |
871b3ab2 | 8172 | _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, " |
d003868e AM |
8173 | "%ld relocations%s", |
8174 | input_bfd, input_section, | |
8175 | (long) input_section->reloc_count, | |
0e1862bb | 8176 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
8177 | #endif |
8178 | ||
a6aa5195 AM |
8179 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
8180 | ||
e47cd125 | 8181 | /* Initialize howto table if not already done. */ |
8da6118f | 8182 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
8183 | ppc_elf_howto_init (); |
8184 | ||
7619e7c7 | 8185 | htab = ppc_elf_hash_table (info); |
252b5132 | 8186 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 8187 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 8188 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
8189 | /* We have to handle relocations in vxworks .tls_vars sections |
8190 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 8191 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
8192 | && !strcmp (input_section->output_section->name, |
8193 | ".tls_vars")); | |
d3e454b9 AM |
8194 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
8195 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 8196 | rel = wrel = relocs; |
7619e7c7 | 8197 | relend = relocs + input_section->reloc_count; |
c316a17c | 8198 | for (; rel < relend; wrel++, rel++) |
252b5132 | 8199 | { |
7619e7c7 AM |
8200 | enum elf_ppc_reloc_type r_type; |
8201 | bfd_vma addend; | |
8202 | bfd_reloc_status_type r; | |
8203 | Elf_Internal_Sym *sym; | |
8204 | asection *sec; | |
8205 | struct elf_link_hash_entry *h; | |
8206 | const char *sym_name; | |
252b5132 RH |
8207 | reloc_howto_type *howto; |
8208 | unsigned long r_symndx; | |
8209 | bfd_vma relocation; | |
91d6fa6a | 8210 | bfd_vma branch_bit, from; |
23cedd1d | 8211 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
7619e7c7 AM |
8212 | bfd_boolean warned; |
8213 | unsigned int tls_type, tls_mask, tls_gd; | |
08be3224 | 8214 | struct plt_entry **ifunc, **plt_list; |
86c95733 | 8215 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 8216 | |
c316a17c | 8217 | again: |
55fd94b0 AM |
8218 | r_type = ELF32_R_TYPE (rel->r_info); |
8219 | sym = NULL; | |
8220 | sec = NULL; | |
8221 | h = NULL; | |
7619e7c7 AM |
8222 | unresolved_reloc = FALSE; |
8223 | warned = FALSE; | |
252b5132 | 8224 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 8225 | |
252b5132 RH |
8226 | if (r_symndx < symtab_hdr->sh_info) |
8227 | { | |
8228 | sym = local_syms + r_symndx; | |
8229 | sec = local_sections[r_symndx]; | |
26c61ae5 | 8230 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 8231 | |
8517fae7 | 8232 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
8233 | } |
8234 | else | |
8235 | { | |
62d887d4 L |
8236 | bfd_boolean ignored; |
8237 | ||
b2a8e766 AM |
8238 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8239 | r_symndx, symtab_hdr, sym_hashes, | |
8240 | h, sec, relocation, | |
62d887d4 | 8241 | unresolved_reloc, warned, ignored); |
9abc968f | 8242 | |
252b5132 | 8243 | sym_name = h->root.root.string; |
7619e7c7 AM |
8244 | } |
8245 | ||
dbaa2011 | 8246 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
8247 | { |
8248 | /* For relocs against symbols from removed linkonce sections, | |
8249 | or sections discarded by a linker script, we just want the | |
8250 | section contents zeroed. Avoid any special processing. */ | |
8251 | howto = NULL; | |
8252 | if (r_type < R_PPC_max) | |
8253 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
8254 | |
8255 | _bfd_clear_contents (howto, input_bfd, input_section, | |
8256 | contents + rel->r_offset); | |
8257 | wrel->r_offset = rel->r_offset; | |
8258 | wrel->r_info = 0; | |
8259 | wrel->r_addend = 0; | |
8260 | ||
8261 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 8262 | symbols defined in discarded sections. Not done for |
c316a17c AM |
8263 | non-debug to preserve relocs in .eh_frame which the |
8264 | eh_frame editing code expects to be present. */ | |
8265 | if (bfd_link_relocatable (info) | |
8266 | && (input_section->flags & SEC_DEBUGGING)) | |
8267 | wrel--; | |
8268 | ||
8269 | continue; | |
ab96bf03 AM |
8270 | } |
8271 | ||
0e1862bb | 8272 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
8273 | { |
8274 | if (got2 != NULL | |
8275 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 8276 | && rel->r_addend != 0) |
ab96bf03 AM |
8277 | { |
8278 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
8279 | addend specifies the GOT pointer offset within .got2. */ | |
8280 | rel->r_addend += got2->output_offset; | |
8281 | } | |
53291d1f AM |
8282 | if (r_type != R_PPC_RELAX_PLT |
8283 | && r_type != R_PPC_RELAX_PLTREL24 | |
8284 | && r_type != R_PPC_RELAX) | |
c316a17c | 8285 | goto copy_reloc; |
ab96bf03 AM |
8286 | } |
8287 | ||
7619e7c7 AM |
8288 | /* TLS optimizations. Replace instruction sequences and relocs |
8289 | based on information we collected in tls_optimize. We edit | |
8290 | RELOCS so that --emit-relocs will output something sensible | |
8291 | for the final instruction stream. */ | |
8292 | tls_mask = 0; | |
8293 | tls_gd = 0; | |
727fc41e AM |
8294 | if (h != NULL) |
8295 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
8296 | else if (local_got_offsets != NULL) | |
7619e7c7 | 8297 | { |
e054468f | 8298 | struct plt_entry **local_plt; |
727fc41e | 8299 | char *lgot_masks; |
e054468f AM |
8300 | local_plt |
8301 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
8302 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 8303 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
8304 | } |
8305 | ||
8306 | /* Ensure reloc mapping code below stays sane. */ | |
8307 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
8308 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
8309 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
8310 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
8311 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
8312 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
8313 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
8314 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
8315 | abort (); | |
8316 | switch (r_type) | |
8317 | { | |
8318 | default: | |
8319 | break; | |
8320 | ||
8321 | case R_PPC_GOT_TPREL16: | |
8322 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 8323 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
8324 | && (tls_mask & TLS_TPREL) == 0) |
8325 | { | |
8326 | bfd_vma insn; | |
91d6fa6a | 8327 | |
95f0d0d2 | 8328 | insn = bfd_get_32 (input_bfd, |
c316a17c | 8329 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
8330 | insn &= 31 << 21; |
8331 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 8332 | bfd_put_32 (input_bfd, insn, |
c316a17c | 8333 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
8334 | r_type = R_PPC_TPREL16_HA; |
8335 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
8336 | } | |
8337 | break; | |
8338 | ||
8339 | case R_PPC_TLS: | |
e054468f | 8340 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
8341 | && (tls_mask & TLS_TPREL) == 0) |
8342 | { | |
2d0f3896 AM |
8343 | bfd_vma insn; |
8344 | ||
95f0d0d2 | 8345 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
8346 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
8347 | if (insn == 0) | |
7619e7c7 | 8348 | abort (); |
95f0d0d2 | 8349 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
8350 | r_type = R_PPC_TPREL16_LO; |
8351 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 8352 | |
7619e7c7 | 8353 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
8354 | PPC_TPREL16_LO which is at low-order half-word. */ |
8355 | rel->r_offset += d_offset; | |
7619e7c7 AM |
8356 | } |
8357 | break; | |
8358 | ||
8359 | case R_PPC_GOT_TLSGD16_HI: | |
8360 | case R_PPC_GOT_TLSGD16_HA: | |
8361 | tls_gd = TLS_TPRELGD; | |
e054468f | 8362 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
8363 | goto tls_gdld_hi; |
8364 | break; | |
8365 | ||
8366 | case R_PPC_GOT_TLSLD16_HI: | |
8367 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 8368 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
8369 | { |
8370 | tls_gdld_hi: | |
8371 | if ((tls_mask & tls_gd) != 0) | |
8372 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
8373 | + R_PPC_GOT_TPREL16); | |
8374 | else | |
8375 | { | |
4fe5ca5b | 8376 | rel->r_offset -= d_offset; |
95f0d0d2 | 8377 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
8378 | r_type = R_PPC_NONE; |
8379 | } | |
8380 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
8381 | } | |
8382 | break; | |
8383 | ||
8384 | case R_PPC_GOT_TLSGD16: | |
8385 | case R_PPC_GOT_TLSGD16_LO: | |
8386 | tls_gd = TLS_TPRELGD; | |
e054468f | 8387 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 8388 | goto tls_ldgd_opt; |
7619e7c7 AM |
8389 | break; |
8390 | ||
8391 | case R_PPC_GOT_TLSLD16: | |
8392 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 8393 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 8394 | { |
3a71aa26 | 8395 | unsigned int insn1, insn2; |
b7fcf6f6 | 8396 | bfd_vma offset; |
7619e7c7 | 8397 | |
b7fcf6f6 | 8398 | tls_ldgd_opt: |
727fc41e AM |
8399 | offset = (bfd_vma) -1; |
8400 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
8401 | __tls_get_addr calls, we must trust that the call | |
8402 | stays with its arg setup insns, ie. that the next | |
8403 | reloc is the __tls_get_addr call associated with | |
8404 | the current reloc. Edit both insns. */ | |
8405 | if (input_section->has_tls_get_addr_call | |
8406 | && rel + 1 < relend | |
8407 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
8408 | htab->tls_get_addr)) | |
8409 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
8410 | /* We read the low GOT_TLS insn because we need to keep |
8411 | the destination reg. It may be something other than | |
8412 | the usual r3, and moved to r3 before the call by | |
8413 | intervening code. */ | |
95f0d0d2 | 8414 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 8415 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
8416 | if ((tls_mask & tls_gd) != 0) |
8417 | { | |
8418 | /* IE */ | |
b86ac8e3 | 8419 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 8420 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
8421 | if (offset != (bfd_vma) -1) |
8422 | { | |
f58d5a2d | 8423 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 8424 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 8425 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 8426 | } |
b7fcf6f6 AM |
8427 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
8428 | + R_PPC_GOT_TPREL16); | |
8429 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
8430 | } | |
8431 | else | |
8432 | { | |
8433 | /* LE */ | |
b86ac8e3 AM |
8434 | insn1 &= 0x1f << 21; |
8435 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
8436 | if (tls_gd == 0) |
8437 | { | |
b7fcf6f6 | 8438 | /* Was an LD reloc. */ |
1d483afe AM |
8439 | for (r_symndx = 0; |
8440 | r_symndx < symtab_hdr->sh_info; | |
8441 | r_symndx++) | |
8442 | if (local_sections[r_symndx] == sec) | |
8443 | break; | |
8444 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8445 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 8446 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8447 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
8448 | rel->r_addend -= (local_syms[r_symndx].st_value |
8449 | + sec->output_offset | |
8450 | + sec->output_section->vma); | |
7619e7c7 | 8451 | } |
b7fcf6f6 AM |
8452 | r_type = R_PPC_TPREL16_HA; |
8453 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
8454 | if (offset != (bfd_vma) -1) |
8455 | { | |
8456 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8457 | rel[1].r_offset = offset + d_offset; | |
8458 | rel[1].r_addend = rel->r_addend; | |
8459 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8460 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 8461 | } |
b7fcf6f6 | 8462 | } |
95f0d0d2 | 8463 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 8464 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
8465 | if (tls_gd == 0) |
8466 | { | |
8467 | /* We changed the symbol on an LD reloc. Start over | |
8468 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 8469 | goto again; |
7619e7c7 | 8470 | } |
252b5132 | 8471 | } |
7619e7c7 | 8472 | break; |
727fc41e AM |
8473 | |
8474 | case R_PPC_TLSGD: | |
675e2809 AM |
8475 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
8476 | && rel + 1 < relend) | |
727fc41e AM |
8477 | { |
8478 | unsigned int insn2; | |
8479 | bfd_vma offset = rel->r_offset; | |
8480 | ||
23cedd1d AM |
8481 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
8482 | { | |
8483 | bfd_put_32 (input_bfd, NOP, contents + offset); | |
8484 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
8485 | break; | |
8486 | } | |
8487 | ||
727fc41e AM |
8488 | if ((tls_mask & TLS_TPRELGD) != 0) |
8489 | { | |
8490 | /* IE */ | |
8491 | r_type = R_PPC_NONE; | |
8492 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
8493 | } | |
8494 | else | |
8495 | { | |
8496 | /* LE */ | |
8497 | r_type = R_PPC_TPREL16_LO; | |
8498 | rel->r_offset += d_offset; | |
8499 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8500 | } | |
8501 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 8502 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
8503 | /* Zap the reloc on the _tls_get_addr call too. */ |
8504 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 8505 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
8506 | } |
8507 | break; | |
8508 | ||
8509 | case R_PPC_TLSLD: | |
675e2809 AM |
8510 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
8511 | && rel + 1 < relend) | |
727fc41e AM |
8512 | { |
8513 | unsigned int insn2; | |
8514 | ||
23cedd1d AM |
8515 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
8516 | { | |
8517 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); | |
8518 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
8519 | break; | |
8520 | } | |
8521 | ||
727fc41e AM |
8522 | for (r_symndx = 0; |
8523 | r_symndx < symtab_hdr->sh_info; | |
8524 | r_symndx++) | |
8525 | if (local_sections[r_symndx] == sec) | |
8526 | break; | |
8527 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8528 | r_symndx = STN_UNDEF; |
727fc41e | 8529 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8530 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
8531 | rel->r_addend -= (local_syms[r_symndx].st_value |
8532 | + sec->output_offset | |
8533 | + sec->output_section->vma); | |
8534 | ||
8535 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8536 | rel->r_offset += d_offset; | |
8537 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8538 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
8539 | contents + rel->r_offset - d_offset); |
8540 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8541 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 8542 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 8543 | goto again; |
727fc41e AM |
8544 | } |
8545 | break; | |
7619e7c7 AM |
8546 | } |
8547 | ||
8548 | /* Handle other relocations that tweak non-addend part of insn. */ | |
8549 | branch_bit = 0; | |
8550 | switch (r_type) | |
8551 | { | |
8552 | default: | |
8553 | break; | |
8554 | ||
8555 | /* Branch taken prediction relocations. */ | |
8556 | case R_PPC_ADDR14_BRTAKEN: | |
8557 | case R_PPC_REL14_BRTAKEN: | |
8558 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 8559 | /* Fall through. */ |
7619e7c7 | 8560 | |
4cc11e76 | 8561 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
8562 | case R_PPC_ADDR14_BRNTAKEN: |
8563 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a | 8564 | { |
23cedd1d | 8565 | unsigned int insn; |
7619e7c7 | 8566 | |
95f0d0d2 | 8567 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
8568 | insn &= ~BRANCH_PREDICT_BIT; |
8569 | insn |= branch_bit; | |
7619e7c7 | 8570 | |
91d6fa6a NC |
8571 | from = (rel->r_offset |
8572 | + input_section->output_offset | |
8573 | + input_section->output_section->vma); | |
7619e7c7 | 8574 | |
91d6fa6a NC |
8575 | /* Invert 'y' bit if not the default. */ |
8576 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8577 | insn ^= BRANCH_PREDICT_BIT; | |
8578 | ||
95f0d0d2 | 8579 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a | 8580 | } |
08be3224 AM |
8581 | break; |
8582 | ||
8583 | case R_PPC_PLT16_HA: | |
8584 | { | |
8585 | unsigned int insn; | |
8586 | ||
8587 | insn = bfd_get_32 (input_bfd, | |
8588 | contents + rel->r_offset - d_offset); | |
8589 | if ((insn & (0x3f << 26)) == 15u << 26 | |
8590 | && (insn & (0x1f << 16)) != 0) | |
8591 | { | |
8592 | if (!bfd_link_pic (info)) | |
8593 | { | |
8594 | /* Convert addis to lis. */ | |
8595 | insn &= ~(0x1f << 16); | |
8596 | bfd_put_32 (input_bfd, insn, | |
8597 | contents + rel->r_offset - d_offset); | |
8598 | } | |
8599 | } | |
8600 | else if (bfd_link_pic (info)) | |
8601 | info->callbacks->einfo | |
8602 | (_("%P: %H: error: %s with unexpected instruction %x\n"), | |
8603 | input_bfd, input_section, rel->r_offset, | |
8604 | "R_PPC_PLT16_HA", insn); | |
8605 | } | |
8606 | break; | |
252b5132 RH |
8607 | } |
8608 | ||
d3e454b9 AM |
8609 | if (ELIMINATE_COPY_RELOCS |
8610 | && h != NULL | |
8611 | && !h->def_regular | |
8612 | && h->protected_def | |
8613 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8614 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8615 | && htab->params->pic_fixup > 0) | |
8616 | { | |
8617 | /* Convert lis;addi or lis;load/store accessing a protected | |
8618 | variable defined in a shared library to PIC. */ | |
8619 | unsigned int insn; | |
8620 | ||
8621 | if (r_type == R_PPC_ADDR16_HA) | |
8622 | { | |
95f0d0d2 | 8623 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8624 | contents + rel->r_offset - d_offset); |
8625 | if ((insn & (0x3f << 26)) == (15u << 26) | |
8626 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
8627 | { | |
8628 | bfd_byte *p; | |
8629 | bfd_vma off; | |
8630 | bfd_vma got_addr; | |
8631 | ||
8632 | p = (contents + input_section->size | |
8633 | - relax_info->workaround_size | |
8634 | - relax_info->picfixup_size | |
8635 | + picfixup_size); | |
8636 | off = (p - contents) - (rel->r_offset - d_offset); | |
8637 | if (off > 0x1fffffc || (off & 3) != 0) | |
8638 | info->callbacks->einfo | |
174d0a74 | 8639 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
8640 | input_bfd, input_section, rel->r_offset); |
8641 | ||
95f0d0d2 | 8642 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 8643 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
8644 | got_addr = (htab->elf.sgot->output_section->vma |
8645 | + htab->elf.sgot->output_offset | |
d3e454b9 | 8646 | + (h->got.offset & ~1)); |
c316a17c AM |
8647 | wrel->r_offset = (p - contents) + d_offset; |
8648 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
8649 | wrel->r_addend = got_addr; | |
d3e454b9 | 8650 | insn &= ~0xffff; |
4aef7643 | 8651 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 8652 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
8653 | |
8654 | /* Convert lis to lwz, loading address from GOT. */ | |
8655 | insn &= ~0xffff; | |
8656 | insn ^= (32u ^ 15u) << 26; | |
8657 | insn |= (insn & (0x1f << 21)) >> 5; | |
8658 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 8659 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 8660 | |
95f0d0d2 | 8661 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
8662 | picfixup_size += 12; |
8663 | ||
8664 | /* Use one of the spare relocs, so --emit-relocs | |
8665 | output is reasonable. */ | |
8666 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
8667 | wrel++, rel++; |
8668 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 8669 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 8670 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
8671 | |
8672 | /* Continue on as if we had a got reloc, to output | |
8673 | dynamic reloc. */ | |
8674 | r_type = R_PPC_GOT16_LO; | |
8675 | } | |
8676 | else | |
2c4d9cbe | 8677 | _bfd_error_handler |
695344c0 | 8678 | /* xgettext:c-format */ |
2dcf00ce AM |
8679 | (_("%pB(%pA+%#" PRIx64 "): error: " |
8680 | "%s with unexpected instruction %#x"), | |
8681 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
8682 | "R_PPC_ADDR16_HA", insn); |
8683 | } | |
8684 | else if (r_type == R_PPC_ADDR16_LO) | |
8685 | { | |
95f0d0d2 | 8686 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8687 | contents + rel->r_offset - d_offset); |
8688 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8689 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8690 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8691 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8692 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8693 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8694 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8695 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8696 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8697 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8698 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8699 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8700 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8701 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8702 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8703 | && (insn & 3) != 1) | |
8704 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8705 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
8706 | { | |
8707 | /* Arrange to apply the reloc addend, if any. */ | |
8708 | relocation = 0; | |
8709 | unresolved_reloc = FALSE; | |
8710 | rel->r_info = ELF32_R_INFO (0, r_type); | |
8711 | } | |
8712 | else | |
2c4d9cbe | 8713 | _bfd_error_handler |
695344c0 | 8714 | /* xgettext:c-format */ |
2dcf00ce AM |
8715 | (_("%pB(%pA+%#" PRIx64 "): error: " |
8716 | "%s with unexpected instruction %#x"), | |
8717 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
8718 | "R_PPC_ADDR16_LO", insn); |
8719 | } | |
8720 | } | |
8721 | ||
e054468f | 8722 | ifunc = NULL; |
25f23106 | 8723 | if (!htab->is_vxworks) |
e054468f | 8724 | { |
de972ffa AM |
8725 | struct plt_entry *ent; |
8726 | ||
e054468f AM |
8727 | if (h != NULL) |
8728 | { | |
8729 | if (h->type == STT_GNU_IFUNC) | |
8730 | ifunc = &h->plt.plist; | |
8731 | } | |
de972ffa AM |
8732 | else if (local_got_offsets != NULL |
8733 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 8734 | { |
de972ffa | 8735 | struct plt_entry **local_plt; |
e054468f | 8736 | |
de972ffa AM |
8737 | local_plt = (struct plt_entry **) (local_got_offsets |
8738 | + symtab_hdr->sh_info); | |
8739 | ifunc = local_plt + r_symndx; | |
e054468f | 8740 | } |
e054468f | 8741 | |
de972ffa AM |
8742 | ent = NULL; |
8743 | if (ifunc != NULL | |
0e1862bb | 8744 | && (!bfd_link_pic (info) |
08be3224 AM |
8745 | || is_branch_reloc (r_type) |
8746 | || r_type == R_PPC_PLT16_LO | |
8747 | || r_type == R_PPC_PLT16_HI | |
8748 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
8749 | { |
8750 | addend = 0; | |
08be3224 AM |
8751 | if (bfd_link_pic (info) |
8752 | && (r_type == R_PPC_PLTREL24 | |
8753 | || r_type == R_PPC_PLT16_LO | |
8754 | || r_type == R_PPC_PLT16_HI | |
8755 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
8756 | addend = rel->r_addend; |
8757 | ent = find_plt_ent (ifunc, got2, addend); | |
8758 | } | |
8759 | if (ent != NULL) | |
8760 | { | |
888a7fc3 AM |
8761 | if (bfd_link_pic (info) |
8762 | && ent->sec != got2 | |
8763 | && htab->plt_type != PLT_NEW | |
8764 | && (!htab->elf.dynamic_sections_created | |
8765 | || h == NULL | |
8766 | || h->dynindx == -1)) | |
8767 | { | |
8768 | /* Uh oh, we are going to create a pic glink stub | |
8769 | for an ifunc (here for h == NULL and later in | |
8770 | finish_dynamic_symbol for h != NULL), and | |
8771 | apparently are using code compiled with | |
8772 | -mbss-plt. The difficulty is that -mbss-plt code | |
8773 | gives no indication via a magic PLTREL24 addend | |
8774 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
8775 | is pointing into a .got2 section (and how far | |
8776 | into .got2). */ | |
8777 | info->callbacks->einfo | |
695344c0 | 8778 | /* xgettext:c-format */ |
174d0a74 | 8779 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
8780 | input_bfd, input_section, rel->r_offset, sym_name); |
8781 | } | |
e054468f AM |
8782 | |
8783 | unresolved_reloc = FALSE; | |
8784 | if (htab->plt_type == PLT_NEW | |
8785 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8786 | || h == NULL |
8787 | || h->dynindx == -1) | |
e054468f AM |
8788 | relocation = (htab->glink->output_section->vma |
8789 | + htab->glink->output_offset | |
8790 | + (ent->glink_offset & ~1)); | |
8791 | else | |
ce558b89 AM |
8792 | relocation = (htab->elf.splt->output_section->vma |
8793 | + htab->elf.splt->output_offset | |
e054468f AM |
8794 | + ent->plt.offset); |
8795 | } | |
8796 | } | |
8797 | ||
7619e7c7 | 8798 | addend = rel->r_addend; |
23cedd1d | 8799 | save_unresolved_reloc = unresolved_reloc; |
7619e7c7 | 8800 | howto = NULL; |
55fd94b0 AM |
8801 | if (r_type < R_PPC_max) |
8802 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
8803 | |
8804 | switch (r_type) | |
8805 | { | |
8806 | default: | |
8807 | break; | |
8808 | ||
8809 | case R_PPC_TPREL16_HA: | |
8810 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8811 | { | |
8812 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8813 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8814 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8815 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8816 | /* xgettext:c-format */ | |
8817 | info->callbacks->minfo | |
8818 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8819 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
8820 | else | |
8821 | bfd_put_32 (input_bfd, NOP, p); | |
8822 | } | |
8823 | break; | |
8824 | ||
8825 | case R_PPC_TPREL16_LO: | |
8826 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8827 | { | |
8828 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8829 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8830 | insn &= ~(0x1f << 16); | |
8831 | insn |= 2 << 16; | |
8832 | bfd_put_32 (input_bfd, insn, p); | |
8833 | } | |
8834 | break; | |
8835 | } | |
8836 | ||
8837 | tls_type = 0; | |
7619e7c7 | 8838 | switch (r_type) |
252b5132 RH |
8839 | { |
8840 | default: | |
cf97bcb0 AM |
8841 | /* xgettext:c-format */ |
8842 | _bfd_error_handler (_("%pB: %s unsupported"), | |
8843 | input_bfd, howto->name); | |
252b5132 RH |
8844 | |
8845 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8846 | ret = FALSE; |
c316a17c | 8847 | goto copy_reloc; |
252b5132 | 8848 | |
7619e7c7 AM |
8849 | case R_PPC_NONE: |
8850 | case R_PPC_TLS: | |
727fc41e AM |
8851 | case R_PPC_TLSGD: |
8852 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8853 | case R_PPC_EMB_MRKREF: |
8854 | case R_PPC_GNU_VTINHERIT: | |
8855 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 8856 | goto copy_reloc; |
7595d193 | 8857 | |
7619e7c7 AM |
8858 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8859 | address in the GOT as relocation value instead of the | |
8860 | symbol's value itself. Also, create a GOT entry for the | |
8861 | symbol and put the symbol value there. */ | |
8862 | case R_PPC_GOT_TLSGD16: | |
8863 | case R_PPC_GOT_TLSGD16_LO: | |
8864 | case R_PPC_GOT_TLSGD16_HI: | |
8865 | case R_PPC_GOT_TLSGD16_HA: | |
8866 | tls_type = TLS_TLS | TLS_GD; | |
8867 | goto dogot; | |
8868 | ||
8869 | case R_PPC_GOT_TLSLD16: | |
8870 | case R_PPC_GOT_TLSLD16_LO: | |
8871 | case R_PPC_GOT_TLSLD16_HI: | |
8872 | case R_PPC_GOT_TLSLD16_HA: | |
8873 | tls_type = TLS_TLS | TLS_LD; | |
8874 | goto dogot; | |
8875 | ||
8876 | case R_PPC_GOT_TPREL16: | |
8877 | case R_PPC_GOT_TPREL16_LO: | |
8878 | case R_PPC_GOT_TPREL16_HI: | |
8879 | case R_PPC_GOT_TPREL16_HA: | |
8880 | tls_type = TLS_TLS | TLS_TPREL; | |
8881 | goto dogot; | |
8882 | ||
8883 | case R_PPC_GOT_DTPREL16: | |
8884 | case R_PPC_GOT_DTPREL16_LO: | |
8885 | case R_PPC_GOT_DTPREL16_HI: | |
8886 | case R_PPC_GOT_DTPREL16_HA: | |
8887 | tls_type = TLS_TLS | TLS_DTPREL; | |
8888 | goto dogot; | |
8889 | ||
8890 | case R_PPC_GOT16: | |
8891 | case R_PPC_GOT16_LO: | |
8892 | case R_PPC_GOT16_HI: | |
8893 | case R_PPC_GOT16_HA: | |
727fc41e | 8894 | tls_mask = 0; |
7619e7c7 AM |
8895 | dogot: |
8896 | { | |
8897 | /* Relocation is to the entry for this symbol in the global | |
8898 | offset table. */ | |
8899 | bfd_vma off; | |
8900 | bfd_vma *offp; | |
8901 | unsigned long indx; | |
8902 | ||
ce558b89 | 8903 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
8904 | abort (); |
8905 | ||
8906 | indx = 0; | |
8907 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8908 | && (h == NULL |
f5385ebf | 8909 | || !h->def_dynamic)) |
7619e7c7 AM |
8910 | offp = &htab->tlsld_got.offset; |
8911 | else if (h != NULL) | |
8912 | { | |
f0158f44 AM |
8913 | if (!htab->elf.dynamic_sections_created |
8914 | || h->dynindx == -1 | |
8915 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 8916 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
8917 | /* This is actually a static link, or it is a |
8918 | -Bsymbolic link and the symbol is defined | |
8919 | locally, or the symbol was forced to be local | |
8920 | because of a version file. */ | |
8921 | ; | |
8922 | else | |
8923 | { | |
8924 | indx = h->dynindx; | |
8925 | unresolved_reloc = FALSE; | |
8926 | } | |
8927 | offp = &h->got.offset; | |
8928 | } | |
8929 | else | |
8930 | { | |
8931 | if (local_got_offsets == NULL) | |
8932 | abort (); | |
8933 | offp = &local_got_offsets[r_symndx]; | |
8934 | } | |
8935 | ||
8936 | /* The offset must always be a multiple of 4. We use the | |
8937 | least significant bit to record whether we have already | |
8938 | processed this entry. */ | |
8939 | off = *offp; | |
8940 | if ((off & 1) != 0) | |
8941 | off &= ~1; | |
8942 | else | |
8943 | { | |
37da22e5 AM |
8944 | unsigned int tls_m = ((tls_mask & TLS_TLS) != 0 |
8945 | ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL | |
8946 | | TLS_TPREL | TLS_TPRELGD) | |
8947 | : 0); | |
70bccea4 AM |
8948 | |
8949 | if (offp == &htab->tlsld_got.offset) | |
8950 | tls_m = TLS_LD; | |
8951 | else if (h == NULL | |
f5385ebf | 8952 | || !h->def_dynamic) |
70bccea4 AM |
8953 | tls_m &= ~TLS_LD; |
8954 | ||
8955 | /* We might have multiple got entries for this sym. | |
8956 | Initialize them all. */ | |
8957 | do | |
7619e7c7 | 8958 | { |
70bccea4 AM |
8959 | int tls_ty = 0; |
8960 | ||
8961 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8962 | { |
70bccea4 AM |
8963 | tls_ty = TLS_TLS | TLS_LD; |
8964 | tls_m &= ~TLS_LD; | |
8965 | } | |
8966 | else if ((tls_m & TLS_GD) != 0) | |
8967 | { | |
8968 | tls_ty = TLS_TLS | TLS_GD; | |
8969 | tls_m &= ~TLS_GD; | |
8970 | } | |
8971 | else if ((tls_m & TLS_DTPREL) != 0) | |
8972 | { | |
8973 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8974 | tls_m &= ~TLS_DTPREL; | |
8975 | } | |
8976 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8977 | { | |
8978 | tls_ty = TLS_TLS | TLS_TPREL; | |
8979 | tls_m = 0; | |
7619e7c7 | 8980 | } |
7619e7c7 | 8981 | |
70bccea4 | 8982 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
8983 | if (indx != 0 |
8984 | || (bfd_link_pic (info) | |
8985 | && (h == NULL | |
21d68fcd | 8986 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
f15d0b54 AM |
8987 | || offp == &htab->tlsld_got.offset) |
8988 | && !(tls_ty == (TLS_TLS | TLS_TPREL) | |
8989 | && bfd_link_executable (info) | |
8990 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 8991 | { |
ce558b89 | 8992 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 8993 | bfd_byte * loc; |
91e21fb7 | 8994 | |
0bed072f | 8995 | if (ifunc != NULL) |
82e66161 AM |
8996 | { |
8997 | rsec = htab->elf.irelplt; | |
8998 | if (indx == 0) | |
8999 | htab->local_ifunc_resolver = 1; | |
9000 | else if (is_static_defined (h)) | |
9001 | htab->maybe_local_ifunc_resolver = 1; | |
9002 | } | |
ce558b89 AM |
9003 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
9004 | + htab->elf.sgot->output_offset | |
70bccea4 | 9005 | + off); |
e515b051 | 9006 | outrel.r_addend = 0; |
70bccea4 AM |
9007 | if (tls_ty & (TLS_LD | TLS_GD)) |
9008 | { | |
9009 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
9010 | if (tls_ty == (TLS_TLS | TLS_GD)) |
9011 | { | |
25f23106 AM |
9012 | loc = rsec->contents; |
9013 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
9014 | * sizeof (Elf32_External_Rela)); |
9015 | bfd_elf32_swap_reloca_out (output_bfd, | |
9016 | &outrel, loc); | |
e515b051 | 9017 | outrel.r_offset += 4; |
70bccea4 AM |
9018 | outrel.r_info |
9019 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
9020 | } |
9021 | } | |
9022 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
9023 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
9024 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
9025 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 9026 | else if (indx != 0) |
70bccea4 | 9027 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
9028 | else if (ifunc != NULL) |
9029 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9030 | else | |
9031 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 9032 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
9033 | { |
9034 | outrel.r_addend += relocation; | |
9035 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
9036 | { |
9037 | if (htab->elf.tls_sec == NULL) | |
9038 | outrel.r_addend = 0; | |
9039 | else | |
9040 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
9041 | } | |
e515b051 | 9042 | } |
25f23106 AM |
9043 | loc = rsec->contents; |
9044 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
9045 | * sizeof (Elf32_External_Rela)); |
9046 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
9047 | } |
9048 | ||
70bccea4 AM |
9049 | /* Init the .got section contents if we're not |
9050 | emitting a reloc. */ | |
9051 | else | |
7619e7c7 | 9052 | { |
70bccea4 AM |
9053 | bfd_vma value = relocation; |
9054 | ||
f0158f44 | 9055 | if (tls_ty != 0) |
70bccea4 | 9056 | { |
989f9879 AM |
9057 | if (htab->elf.tls_sec == NULL) |
9058 | value = 0; | |
9059 | else | |
9060 | { | |
f0158f44 AM |
9061 | if (tls_ty & TLS_LD) |
9062 | value = 0; | |
9063 | else | |
9064 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 9065 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
9066 | value += DTP_OFFSET - TP_OFFSET; |
9067 | } | |
70bccea4 | 9068 | |
f0158f44 | 9069 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 9070 | { |
95f0d0d2 | 9071 | bfd_put_32 (input_bfd, value, |
ce558b89 | 9072 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 9073 | value = 1; |
7b609f53 | 9074 | } |
70bccea4 | 9075 | } |
95f0d0d2 | 9076 | bfd_put_32 (input_bfd, value, |
ce558b89 | 9077 | htab->elf.sgot->contents + off); |
7619e7c7 | 9078 | } |
70bccea4 AM |
9079 | |
9080 | off += 4; | |
9081 | if (tls_ty & (TLS_LD | TLS_GD)) | |
9082 | off += 4; | |
7619e7c7 | 9083 | } |
70bccea4 AM |
9084 | while (tls_m != 0); |
9085 | ||
9086 | off = *offp; | |
9087 | *offp = off | 1; | |
7619e7c7 AM |
9088 | } |
9089 | ||
9090 | if (off >= (bfd_vma) -2) | |
9091 | abort (); | |
9092 | ||
70bccea4 AM |
9093 | if ((tls_type & TLS_TLS) != 0) |
9094 | { | |
9095 | if (tls_type != (TLS_TLS | TLS_LD)) | |
9096 | { | |
9097 | if ((tls_mask & TLS_LD) != 0 | |
9098 | && !(h == NULL | |
f5385ebf | 9099 | || !h->def_dynamic)) |
70bccea4 AM |
9100 | off += 8; |
9101 | if (tls_type != (TLS_TLS | TLS_GD)) | |
9102 | { | |
9103 | if ((tls_mask & TLS_GD) != 0) | |
9104 | off += 8; | |
9105 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
9106 | { | |
9107 | if ((tls_mask & TLS_DTPREL) != 0) | |
9108 | off += 4; | |
9109 | } | |
9110 | } | |
9111 | } | |
9112 | } | |
9113 | ||
d3e454b9 AM |
9114 | /* If here for a picfixup, we're done. */ |
9115 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 9116 | goto copy_reloc; |
d3e454b9 | 9117 | |
ce558b89 AM |
9118 | relocation = (htab->elf.sgot->output_section->vma |
9119 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
9120 | + off |
9121 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
9122 | |
9123 | /* Addends on got relocations don't make much sense. | |
9124 | x+off@got is actually x@got+off, and since the got is | |
9125 | generated by a hash table traversal, the value in the | |
9126 | got at entry m+n bears little relation to the entry m. */ | |
9127 | if (addend != 0) | |
25f53a85 | 9128 | info->callbacks->einfo |
695344c0 | 9129 | /* xgettext:c-format */ |
174d0a74 | 9130 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 9131 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9132 | howto->name, |
7619e7c7 AM |
9133 | sym_name); |
9134 | } | |
86c95733 | 9135 | break; |
7619e7c7 | 9136 | |
86c95733 | 9137 | /* Relocations that need no special processing. */ |
7619e7c7 | 9138 | case R_PPC_LOCAL24PC: |
252b5132 RH |
9139 | /* It makes no sense to point a local relocation |
9140 | at a symbol not in this object. */ | |
7b609f53 | 9141 | if (unresolved_reloc) |
252b5132 | 9142 | { |
1a72702b AM |
9143 | (*info->callbacks->undefined_symbol) (info, |
9144 | h->root.root.string, | |
9145 | input_bfd, | |
9146 | input_section, | |
9147 | rel->r_offset, | |
9148 | TRUE); | |
c316a17c | 9149 | goto copy_reloc; |
252b5132 | 9150 | } |
888a7fc3 AM |
9151 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
9152 | { | |
9153 | /* @local on an ifunc does not really make sense since | |
9154 | the ifunc resolver can take you anywhere. More | |
9155 | seriously, calls to ifuncs must go through a plt call | |
9156 | stub, and for pic the plt call stubs uses r30 to | |
9157 | access the PLT. The problem is that a call that is | |
9158 | local won't have the +32k reloc addend trick marking | |
9159 | -fPIC code, so the linker won't know whether r30 is | |
9160 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 9161 | /* xgettext:c-format */ |
174d0a74 | 9162 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
9163 | input_bfd, input_section, rel->r_offset, |
9164 | h->root.root.string); | |
9165 | } | |
252b5132 RH |
9166 | break; |
9167 | ||
7619e7c7 AM |
9168 | case R_PPC_DTPREL16: |
9169 | case R_PPC_DTPREL16_LO: | |
9170 | case R_PPC_DTPREL16_HI: | |
9171 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
9172 | if (htab->elf.tls_sec != NULL) |
9173 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
9174 | break; |
9175 | ||
70bccea4 AM |
9176 | /* Relocations that may need to be propagated if this is a shared |
9177 | object. */ | |
7619e7c7 AM |
9178 | case R_PPC_TPREL16: |
9179 | case R_PPC_TPREL16_LO: | |
9180 | case R_PPC_TPREL16_HI: | |
9181 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
9182 | if (h != NULL |
9183 | && h->root.type == bfd_link_hash_undefweak | |
9184 | && h->dynindx == -1) | |
9185 | { | |
9186 | /* Make this relocation against an undefined weak symbol | |
9187 | resolve to zero. This is really just a tweak, since | |
9188 | code using weak externs ought to check that they are | |
9189 | defined before using them. */ | |
9190 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 9191 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
9192 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
9193 | if (insn != 0) | |
95f0d0d2 | 9194 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
9195 | break; |
9196 | } | |
989f9879 AM |
9197 | if (htab->elf.tls_sec != NULL) |
9198 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 9199 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
9200 | libs or with non-local symbols as that will result in |
9201 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
9202 | goto dodyn; |
9203 | ||
9204 | case R_PPC_TPREL32: | |
989f9879 AM |
9205 | if (htab->elf.tls_sec != NULL) |
9206 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
9207 | goto dodyn; |
9208 | ||
9209 | case R_PPC_DTPREL32: | |
989f9879 AM |
9210 | if (htab->elf.tls_sec != NULL) |
9211 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
9212 | goto dodyn; |
9213 | ||
e515b051 AM |
9214 | case R_PPC_DTPMOD32: |
9215 | relocation = 1; | |
9216 | addend = 0; | |
9217 | goto dodyn; | |
9218 | ||
d7128ce4 AM |
9219 | case R_PPC_REL16: |
9220 | case R_PPC_REL16_LO: | |
9221 | case R_PPC_REL16_HI: | |
9222 | case R_PPC_REL16_HA: | |
a680de9a | 9223 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
9224 | break; |
9225 | ||
7619e7c7 | 9226 | case R_PPC_REL32: |
625af618 AM |
9227 | if (h == NULL || h == htab->elf.hgot) |
9228 | break; | |
9229 | /* fall through */ | |
9230 | ||
9231 | case R_PPC_ADDR32: | |
9232 | case R_PPC_ADDR16: | |
9233 | case R_PPC_ADDR16_LO: | |
9234 | case R_PPC_ADDR16_HI: | |
9235 | case R_PPC_ADDR16_HA: | |
9236 | case R_PPC_UADDR32: | |
9237 | case R_PPC_UADDR16: | |
9238 | goto dodyn; | |
9239 | ||
b9c361e0 JL |
9240 | case R_PPC_VLE_REL8: |
9241 | case R_PPC_VLE_REL15: | |
9242 | case R_PPC_VLE_REL24: | |
625af618 | 9243 | case R_PPC_REL24: |
7619e7c7 AM |
9244 | case R_PPC_REL14: |
9245 | case R_PPC_REL14_BRTAKEN: | |
9246 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
9247 | /* If these relocations are not to a named symbol, they can be |
9248 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 9249 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 9250 | || h == htab->elf.hgot) |
252b5132 | 9251 | break; |
70bccea4 | 9252 | /* fall through */ |
252b5132 | 9253 | |
7619e7c7 | 9254 | case R_PPC_ADDR24: |
7619e7c7 AM |
9255 | case R_PPC_ADDR14: |
9256 | case R_PPC_ADDR14_BRTAKEN: | |
9257 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 9258 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
9259 | break; |
9260 | /* fall through */ | |
9261 | ||
7619e7c7 | 9262 | dodyn: |
3348747a NS |
9263 | if ((input_section->flags & SEC_ALLOC) == 0 |
9264 | || is_vxworks_tls) | |
c87b5a93 | 9265 | break; |
c87b5a93 | 9266 | |
287c7eaf AM |
9267 | if (bfd_link_pic (info) |
9268 | ? ((h == NULL | |
9269 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
9270 | && ((h != NULL && pc_dynrelocs (h)) | |
9271 | || must_be_dyn_reloc (info, r_type))) | |
9272 | : (h != NULL | |
9273 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 9274 | { |
0bb2d96a | 9275 | int skip; |
f95f8542 AM |
9276 | bfd_byte *loc; |
9277 | asection *sreloc; | |
82e66161 AM |
9278 | long indx = 0; |
9279 | ||
252b5132 | 9280 | #ifdef DEBUG |
55fd94b0 AM |
9281 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
9282 | "create relocation for %s\n", | |
70bccea4 AM |
9283 | (h && h->root.root.string |
9284 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
9285 | #endif |
9286 | ||
9287 | /* When generating a shared object, these relocations | |
70bccea4 AM |
9288 | are copied into the output file to be resolved at run |
9289 | time. */ | |
0bb2d96a | 9290 | skip = 0; |
5b914448 AM |
9291 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
9292 | input_section, | |
9293 | rel->r_offset); | |
0bb2d96a JJ |
9294 | if (outrel.r_offset == (bfd_vma) -1 |
9295 | || outrel.r_offset == (bfd_vma) -2) | |
9296 | skip = (int) outrel.r_offset; | |
252b5132 RH |
9297 | outrel.r_offset += (input_section->output_section->vma |
9298 | + input_section->output_offset); | |
9299 | ||
9300 | if (skip) | |
9301 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 9302 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 9303 | { |
82e66161 AM |
9304 | indx = h->dynindx; |
9305 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 9306 | unresolved_reloc = FALSE; |
82e66161 | 9307 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
9308 | outrel.r_addend = rel->r_addend; |
9309 | } | |
9310 | else | |
9311 | { | |
47388f4c AM |
9312 | outrel.r_addend = relocation + rel->r_addend; |
9313 | ||
25f23106 | 9314 | if (r_type != R_PPC_ADDR32) |
252b5132 | 9315 | { |
25f23106 AM |
9316 | if (ifunc != NULL) |
9317 | { | |
9318 | /* If we get here when building a static | |
9319 | executable, then the libc startup function | |
9320 | responsible for applying indirect function | |
9321 | relocations is going to complain about | |
9322 | the reloc type. | |
9323 | If we get here when building a dynamic | |
9324 | executable, it will be because we have | |
9325 | a text relocation. The dynamic loader | |
9326 | will set the text segment writable and | |
9327 | non-executable to apply text relocations. | |
9328 | So we'll segfault when trying to run the | |
9329 | indirection function to resolve the reloc. */ | |
25f53a85 | 9330 | info->callbacks->einfo |
695344c0 | 9331 | /* xgettext:c-format */ |
174d0a74 | 9332 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
9333 | "function %s unsupported\n"), |
9334 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
9335 | howto->name, |
9336 | sym_name); | |
9337 | ret = FALSE; | |
9338 | } | |
cf35638d | 9339 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 9340 | ; |
252b5132 RH |
9341 | else if (sec == NULL || sec->owner == NULL) |
9342 | { | |
9343 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 9344 | ret = FALSE; |
252b5132 RH |
9345 | } |
9346 | else | |
9347 | { | |
9348 | asection *osec; | |
9349 | ||
47388f4c AM |
9350 | /* We are turning this relocation into one |
9351 | against a section symbol. It would be | |
9352 | proper to subtract the symbol's value, | |
9353 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
9354 | but ld.so expects buggy relocs. |
9355 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
9356 | osec = sec->output_section; |
9357 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
9358 | if (indx == 0) |
9359 | { | |
9360 | osec = htab->elf.text_index_section; | |
9361 | indx = elf_section_data (osec)->dynindx; | |
9362 | } | |
9363 | BFD_ASSERT (indx != 0); | |
252b5132 | 9364 | #ifdef DEBUG |
74541ad4 | 9365 | if (indx == 0) |
e460dd0d | 9366 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
9367 | indx, osec->name, osec->flags, |
9368 | h->root.root.string); | |
252b5132 RH |
9369 | #endif |
9370 | } | |
9371 | ||
9372 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 9373 | } |
25f23106 AM |
9374 | else if (ifunc != NULL) |
9375 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9376 | else | |
9377 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
9378 | } |
9379 | ||
82e66161 AM |
9380 | sreloc = elf_section_data (input_section)->sreloc; |
9381 | if (ifunc) | |
9382 | { | |
9383 | sreloc = htab->elf.irelplt; | |
9384 | if (indx == 0) | |
9385 | htab->local_ifunc_resolver = 1; | |
9386 | else if (is_static_defined (h)) | |
9387 | htab->maybe_local_ifunc_resolver = 1; | |
9388 | } | |
9389 | if (sreloc == NULL) | |
9390 | return FALSE; | |
9391 | ||
947216bf AM |
9392 | loc = sreloc->contents; |
9393 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
9394 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 9395 | |
2243deae | 9396 | if (skip == -1) |
c316a17c | 9397 | goto copy_reloc; |
2243deae | 9398 | |
f0158f44 AM |
9399 | /* This reloc will be computed at runtime. Clear the memory |
9400 | so that it contains a predictable value for prelink. */ | |
9401 | if (!skip) | |
2243deae L |
9402 | { |
9403 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
9404 | addend = 0; | |
9405 | break; | |
9406 | } | |
252b5132 | 9407 | } |
252b5132 RH |
9408 | break; |
9409 | ||
32af9f6e AM |
9410 | case R_PPC_RELAX_PLT: |
9411 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
9412 | if (h != NULL) |
9413 | { | |
32af9f6e AM |
9414 | struct plt_entry *ent; |
9415 | bfd_vma got2_addend = 0; | |
9416 | ||
9417 | if (r_type == R_PPC_RELAX_PLTREL24) | |
9418 | { | |
0e1862bb | 9419 | if (bfd_link_pic (info)) |
32af9f6e AM |
9420 | got2_addend = addend; |
9421 | addend = 0; | |
9422 | } | |
9423 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
9424 | if (htab->plt_type == PLT_NEW) |
9425 | relocation = (htab->glink->output_section->vma | |
9426 | + htab->glink->output_offset | |
9427 | + ent->glink_offset); | |
9428 | else | |
ce558b89 AM |
9429 | relocation = (htab->elf.splt->output_section->vma |
9430 | + htab->elf.splt->output_offset | |
de972ffa AM |
9431 | + ent->plt.offset); |
9432 | } | |
1a0670f3 | 9433 | /* Fall through. */ |
b4a38de6 | 9434 | |
32af9f6e | 9435 | case R_PPC_RELAX: |
9abc968f | 9436 | { |
53291d1f AM |
9437 | const int *stub; |
9438 | size_t size; | |
9439 | size_t insn_offset = rel->r_offset; | |
9440 | unsigned int insn; | |
9abc968f | 9441 | |
0e1862bb | 9442 | if (bfd_link_pic (info)) |
53291d1f AM |
9443 | { |
9444 | relocation -= (input_section->output_section->vma | |
9445 | + input_section->output_offset | |
9446 | + rel->r_offset - 4); | |
9447 | stub = shared_stub_entry; | |
95f0d0d2 AM |
9448 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
9449 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
9450 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
9451 | stub += 3; |
9452 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
9453 | } | |
9454 | else | |
9455 | { | |
9456 | stub = stub_entry; | |
9457 | size = ARRAY_SIZE (stub_entry); | |
9458 | } | |
9abc968f | 9459 | |
9abc968f | 9460 | relocation += addend; |
0e1862bb | 9461 | if (bfd_link_relocatable (info)) |
53291d1f AM |
9462 | relocation = 0; |
9463 | ||
9464 | /* First insn is HA, second is LO. */ | |
9465 | insn = *stub++; | |
9466 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 9467 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
9468 | insn_offset += 4; |
9469 | ||
9470 | insn = *stub++; | |
9471 | insn |= relocation & 0xffff; | |
95f0d0d2 | 9472 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
9473 | insn_offset += 4; |
9474 | size -= 2; | |
9475 | ||
9476 | while (size != 0) | |
9477 | { | |
9478 | insn = *stub++; | |
9479 | --size; | |
95f0d0d2 | 9480 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
9481 | insn_offset += 4; |
9482 | } | |
9bc4e62b NS |
9483 | |
9484 | /* Rewrite the reloc and convert one of the trailing nop | |
9485 | relocs to describe this relocation. */ | |
9486 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
9487 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
9488 | wrel->r_offset = rel->r_offset + d_offset; |
9489 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
9490 | wrel->r_addend = rel->r_addend; | |
9491 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
9492 | wrel++, rel++; | |
9493 | wrel->r_offset += 4; | |
9494 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 9495 | } |
8517fae7 | 9496 | continue; |
deaaf2f3 | 9497 | |
70bccea4 | 9498 | /* Indirect .sdata relocation. */ |
7619e7c7 | 9499 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 9500 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
9501 | if (!is_static_defined (htab->sdata[0].sym)) |
9502 | { | |
9503 | unresolved_reloc = TRUE; | |
9504 | break; | |
9505 | } | |
7619e7c7 | 9506 | relocation |
76750a2f AM |
9507 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
9508 | h, relocation, rel); | |
bd6c6e2b | 9509 | addend = 0; |
252b5132 RH |
9510 | break; |
9511 | ||
70bccea4 | 9512 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 9513 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 9514 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
9515 | if (!is_static_defined (htab->sdata[1].sym)) |
9516 | { | |
9517 | unresolved_reloc = TRUE; | |
9518 | break; | |
9519 | } | |
7619e7c7 | 9520 | relocation |
76750a2f AM |
9521 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
9522 | h, relocation, rel); | |
bd6c6e2b | 9523 | addend = 0; |
252b5132 RH |
9524 | break; |
9525 | ||
70bccea4 AM |
9526 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
9527 | section, not the actual VMA. This is appropriate when generating | |
9528 | an embedded ELF object, for which the .got section acts like the | |
9529 | AIX .toc section. */ | |
7619e7c7 | 9530 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
9531 | if (sec == NULL || sec->output_section == NULL) |
9532 | { | |
9533 | unresolved_reloc = TRUE; | |
9534 | break; | |
9535 | } | |
a0f49396 NC |
9536 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
9537 | ".got") == 0 | |
9538 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
9539 | ".cgot") == 0); | |
252b5132 | 9540 | |
3b4f3a11 | 9541 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
9542 | break; |
9543 | ||
7619e7c7 | 9544 | case R_PPC_PLTREL24: |
f75e0e33 AM |
9545 | if (h != NULL && ifunc == NULL) |
9546 | { | |
cbf95972 AM |
9547 | struct plt_entry *ent; |
9548 | ||
9549 | ent = find_plt_ent (&h->plt.plist, got2, | |
9550 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 9551 | if (ent == NULL |
ce558b89 | 9552 | || htab->elf.splt == NULL) |
f75e0e33 AM |
9553 | { |
9554 | /* We didn't make a PLT entry for this symbol. This | |
9555 | happens when statically linking PIC code, or when | |
9556 | using -Bsymbolic. */ | |
9557 | } | |
9558 | else | |
9559 | { | |
9560 | /* Relocation is to the entry for this symbol in the | |
9561 | procedure linkage table. */ | |
9562 | unresolved_reloc = FALSE; | |
9563 | if (htab->plt_type == PLT_NEW) | |
9564 | relocation = (htab->glink->output_section->vma | |
9565 | + htab->glink->output_offset | |
9566 | + ent->glink_offset); | |
9567 | else | |
ce558b89 AM |
9568 | relocation = (htab->elf.splt->output_section->vma |
9569 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
9570 | + ent->plt.offset); |
9571 | } | |
9572 | } | |
252b5132 | 9573 | |
f75e0e33 AM |
9574 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
9575 | addend specifies the GOT pointer offset within .got2. | |
9576 | Don't apply it to the relocation field. */ | |
9577 | addend = 0; | |
8da6118f | 9578 | break; |
252b5132 | 9579 | |
23cedd1d AM |
9580 | case R_PPC_PLTSEQ: |
9581 | case R_PPC_PLTCALL: | |
08be3224 AM |
9582 | case R_PPC_PLT16_LO: |
9583 | case R_PPC_PLT16_HI: | |
9584 | case R_PPC_PLT16_HA: | |
2d7ad24e | 9585 | plt_list = NULL; |
08be3224 AM |
9586 | if (h != NULL) |
9587 | plt_list = &h->plt.plist; | |
2d7ad24e AM |
9588 | else if (ifunc != NULL) |
9589 | plt_list = ifunc; | |
9590 | else if (local_got_offsets != NULL) | |
9591 | { | |
9592 | struct plt_entry **local_plt; | |
9593 | local_plt = (struct plt_entry **) (local_got_offsets | |
9594 | + symtab_hdr->sh_info); | |
9595 | plt_list = local_plt + r_symndx; | |
9596 | } | |
08be3224 AM |
9597 | unresolved_reloc = TRUE; |
9598 | if (plt_list != NULL) | |
9599 | { | |
9600 | struct plt_entry *ent; | |
9601 | ||
9602 | ent = find_plt_ent (plt_list, got2, | |
9603 | bfd_link_pic (info) ? addend : 0); | |
2d7ad24e | 9604 | if (ent != NULL && ent->plt.offset != (bfd_vma) -1) |
08be3224 | 9605 | { |
2d7ad24e AM |
9606 | asection *plt; |
9607 | ||
08be3224 | 9608 | unresolved_reloc = FALSE; |
2d7ad24e AM |
9609 | plt = htab->elf.splt; |
9610 | if (!htab->elf.dynamic_sections_created | |
9611 | || h == NULL | |
9612 | || h->dynindx == -1) | |
9613 | { | |
9614 | if (ifunc != NULL) | |
9615 | plt = htab->elf.iplt; | |
9616 | else | |
9617 | plt = htab->pltlocal; | |
9618 | } | |
9619 | relocation = (plt->output_section->vma | |
9620 | + plt->output_offset | |
08be3224 AM |
9621 | + ent->plt.offset); |
9622 | if (bfd_link_pic (info)) | |
9623 | { | |
9624 | bfd_vma got = 0; | |
9625 | ||
9626 | if (ent->addend >= 32768) | |
9627 | got = (ent->addend | |
9628 | + ent->sec->output_section->vma | |
9629 | + ent->sec->output_offset); | |
9630 | else | |
9631 | got = SYM_VAL (htab->elf.hgot); | |
9632 | relocation -= got; | |
9633 | } | |
9634 | } | |
9635 | } | |
9636 | addend = 0; | |
9637 | break; | |
9638 | ||
70bccea4 | 9639 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 9640 | case R_PPC_SDAREL16: |
252b5132 RH |
9641 | { |
9642 | const char *name; | |
bd6c6e2b | 9643 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 9644 | |
bd6c6e2b AM |
9645 | if (sec == NULL |
9646 | || sec->output_section == NULL | |
9647 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9648 | { |
9649 | unresolved_reloc = TRUE; | |
9650 | break; | |
9651 | } | |
bd6c6e2b | 9652 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9653 | |
a0f49396 | 9654 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9655 | if (!(strcmp (name, ".sdata") == 0 |
9656 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 9657 | { |
cf97bcb0 | 9658 | _bfd_error_handler |
695344c0 | 9659 | /* xgettext:c-format */ |
cf97bcb0 AM |
9660 | (_("%pB: the target (%s) of a %s relocation is " |
9661 | "in the wrong output section (%s)"), | |
d003868e | 9662 | input_bfd, |
55fd94b0 AM |
9663 | sym_name, |
9664 | howto->name, | |
9665 | name); | |
252b5132 | 9666 | } |
252b5132 RH |
9667 | } |
9668 | break; | |
9669 | ||
70bccea4 | 9670 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 9671 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
9672 | { |
9673 | const char *name; | |
bd6c6e2b | 9674 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 9675 | |
bd6c6e2b AM |
9676 | if (sec == NULL |
9677 | || sec->output_section == NULL | |
9678 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9679 | { |
9680 | unresolved_reloc = TRUE; | |
9681 | break; | |
9682 | } | |
bd6c6e2b | 9683 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9684 | |
a0f49396 | 9685 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9686 | if (!(strcmp (name, ".sdata2") == 0 |
9687 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 9688 | { |
cf97bcb0 | 9689 | _bfd_error_handler |
695344c0 | 9690 | /* xgettext:c-format */ |
cf97bcb0 AM |
9691 | (_("%pB: the target (%s) of a %s relocation is " |
9692 | "in the wrong output section (%s)"), | |
d003868e | 9693 | input_bfd, |
55fd94b0 AM |
9694 | sym_name, |
9695 | howto->name, | |
9696 | name); | |
252b5132 | 9697 | } |
252b5132 RH |
9698 | } |
9699 | break; | |
9700 | ||
b9c361e0 | 9701 | case R_PPC_VLE_LO16A: |
86c95733 | 9702 | relocation = relocation + addend; |
08dc996f AM |
9703 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9704 | contents + rel->r_offset, relocation, | |
9705 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9706 | goto copy_reloc; |
b9c361e0 JL |
9707 | |
9708 | case R_PPC_VLE_LO16D: | |
86c95733 | 9709 | relocation = relocation + addend; |
08dc996f AM |
9710 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9711 | contents + rel->r_offset, relocation, | |
9712 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9713 | goto copy_reloc; |
b9c361e0 JL |
9714 | |
9715 | case R_PPC_VLE_HI16A: | |
86c95733 | 9716 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9717 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9718 | contents + rel->r_offset, relocation, | |
9719 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9720 | goto copy_reloc; |
b9c361e0 JL |
9721 | |
9722 | case R_PPC_VLE_HI16D: | |
86c95733 | 9723 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9724 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9725 | contents + rel->r_offset, relocation, | |
9726 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9727 | goto copy_reloc; |
b9c361e0 JL |
9728 | |
9729 | case R_PPC_VLE_HA16A: | |
86c95733 | 9730 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9731 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9732 | contents + rel->r_offset, relocation, | |
9733 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9734 | goto copy_reloc; |
b9c361e0 JL |
9735 | |
9736 | case R_PPC_VLE_HA16D: | |
86c95733 | 9737 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9738 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9739 | contents + rel->r_offset, relocation, | |
9740 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9741 | goto copy_reloc; |
b9c361e0 | 9742 | |
70bccea4 | 9743 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 9744 | case R_PPC_EMB_SDA21: |
b9c361e0 | 9745 | case R_PPC_VLE_SDA21: |
7619e7c7 | 9746 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 9747 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
9748 | { |
9749 | const char *name; | |
9750 | int reg; | |
86c95733 | 9751 | unsigned int insn; |
bd6c6e2b | 9752 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 9753 | |
3b4f3a11 AM |
9754 | if (sec == NULL || sec->output_section == NULL) |
9755 | { | |
9756 | unresolved_reloc = TRUE; | |
9757 | break; | |
9758 | } | |
9759 | ||
a0f49396 | 9760 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9761 | if (strcmp (name, ".sdata") == 0 |
9762 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
9763 | { |
9764 | reg = 13; | |
bd6c6e2b | 9765 | sda = htab->sdata[0].sym; |
252b5132 | 9766 | } |
93d1b056 AM |
9767 | else if (strcmp (name, ".sdata2") == 0 |
9768 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
9769 | { |
9770 | reg = 2; | |
bd6c6e2b | 9771 | sda = htab->sdata[1].sym; |
252b5132 | 9772 | } |
8da6118f KH |
9773 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
9774 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
9775 | { |
9776 | reg = 0; | |
9777 | } | |
252b5132 RH |
9778 | else |
9779 | { | |
cf97bcb0 | 9780 | _bfd_error_handler |
695344c0 | 9781 | /* xgettext:c-format */ |
cf97bcb0 AM |
9782 | (_("%pB: the target (%s) of a %s relocation is " |
9783 | "in the wrong output section (%s)"), | |
d003868e | 9784 | input_bfd, |
55fd94b0 AM |
9785 | sym_name, |
9786 | howto->name, | |
9787 | name); | |
252b5132 RH |
9788 | |
9789 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9790 | ret = FALSE; |
c316a17c | 9791 | goto copy_reloc; |
252b5132 RH |
9792 | } |
9793 | ||
bd6c6e2b AM |
9794 | if (sda != NULL) |
9795 | { | |
9796 | if (!is_static_defined (sda)) | |
9797 | { | |
9798 | unresolved_reloc = TRUE; | |
9799 | break; | |
9800 | } | |
9801 | addend -= SYM_VAL (sda); | |
9802 | } | |
9803 | ||
95f0d0d2 | 9804 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
9805 | if (reg == 0 |
9806 | && (r_type == R_PPC_VLE_SDA21 | |
9807 | || r_type == R_PPC_VLE_SDA21_LO)) | |
9808 | { | |
86c95733 AM |
9809 | relocation = relocation + addend; |
9810 | addend = 0; | |
9811 | ||
9812 | /* Force e_li insn, keeping RT from original insn. */ | |
9813 | insn &= 0x1f << 21; | |
9814 | insn |= 28u << 26; | |
9815 | ||
9816 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
9817 | /* Top 4 bits of value to 17..20. */ | |
9818 | insn |= (relocation & 0xf0000) >> 5; | |
9819 | /* Next 5 bits of the value to 11..15. */ | |
9820 | insn |= (relocation & 0xf800) << 5; | |
9821 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
9822 | insn |= relocation & 0x7ff; | |
9823 | ||
95f0d0d2 | 9824 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
9825 | |
9826 | if (r_type == R_PPC_VLE_SDA21 | |
9827 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
9828 | goto overflow; | |
c316a17c | 9829 | goto copy_reloc; |
b9c361e0 JL |
9830 | } |
9831 | else if (r_type == R_PPC_EMB_SDA21 | |
9832 | || r_type == R_PPC_VLE_SDA21 | |
9833 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 9834 | { |
86c95733 | 9835 | /* Fill in register field. */ |
252b5132 | 9836 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 9837 | } |
95f0d0d2 | 9838 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
9839 | } |
9840 | break; | |
9841 | ||
b9c361e0 JL |
9842 | case R_PPC_VLE_SDAREL_LO16A: |
9843 | case R_PPC_VLE_SDAREL_LO16D: | |
9844 | case R_PPC_VLE_SDAREL_HI16A: | |
9845 | case R_PPC_VLE_SDAREL_HI16D: | |
9846 | case R_PPC_VLE_SDAREL_HA16A: | |
9847 | case R_PPC_VLE_SDAREL_HA16D: | |
9848 | { | |
9849 | bfd_vma value; | |
9850 | const char *name; | |
b9c361e0 JL |
9851 | struct elf_link_hash_entry *sda = NULL; |
9852 | ||
9853 | if (sec == NULL || sec->output_section == NULL) | |
9854 | { | |
9855 | unresolved_reloc = TRUE; | |
9856 | break; | |
9857 | } | |
9858 | ||
a0f49396 | 9859 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9860 | if (strcmp (name, ".sdata") == 0 |
9861 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 9862 | sda = htab->sdata[0].sym; |
93d1b056 AM |
9863 | else if (strcmp (name, ".sdata2") == 0 |
9864 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 9865 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
9866 | else |
9867 | { | |
4eca0228 | 9868 | _bfd_error_handler |
695344c0 | 9869 | /* xgettext:c-format */ |
871b3ab2 | 9870 | (_("%pB: the target (%s) of a %s relocation is " |
b9c361e0 JL |
9871 | "in the wrong output section (%s)"), |
9872 | input_bfd, | |
9873 | sym_name, | |
9874 | howto->name, | |
9875 | name); | |
9876 | ||
9877 | bfd_set_error (bfd_error_bad_value); | |
9878 | ret = FALSE; | |
c316a17c | 9879 | goto copy_reloc; |
b9c361e0 JL |
9880 | } |
9881 | ||
5499c7c7 | 9882 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 9883 | { |
5499c7c7 AM |
9884 | unresolved_reloc = TRUE; |
9885 | break; | |
b9c361e0 | 9886 | } |
5499c7c7 | 9887 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
9888 | |
9889 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
9890 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9891 | contents + rel->r_offset, value, | |
9892 | split16a_type, | |
9893 | htab->params->vle_reloc_fixup); | |
86c95733 | 9894 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
9895 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9896 | contents + rel->r_offset, value, | |
9897 | split16d_type, | |
9898 | htab->params->vle_reloc_fixup); | |
86c95733 | 9899 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 9900 | { |
86c95733 | 9901 | value = value >> 16; |
08dc996f AM |
9902 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9903 | contents + rel->r_offset, value, | |
9904 | split16a_type, | |
9905 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9906 | } |
86c95733 | 9907 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9908 | { |
86c95733 | 9909 | value = value >> 16; |
08dc996f AM |
9910 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9911 | contents + rel->r_offset, value, | |
9912 | split16d_type, | |
9913 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9914 | } |
86c95733 | 9915 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9916 | { |
86c95733 | 9917 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9918 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9919 | contents + rel->r_offset, value, | |
9920 | split16a_type, | |
9921 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9922 | } |
86c95733 | 9923 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9924 | { |
86c95733 | 9925 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9926 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9927 | contents + rel->r_offset, value, | |
9928 | split16d_type, | |
9929 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
9930 | } |
9931 | } | |
c316a17c | 9932 | goto copy_reloc; |
b9c361e0 | 9933 | |
83eef883 AFB |
9934 | case R_PPC_VLE_ADDR20: |
9935 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
9936 | continue; | |
9937 | ||
70bccea4 | 9938 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9939 | case R_PPC_SECTOFF: |
9940 | case R_PPC_SECTOFF_LO: | |
9941 | case R_PPC_SECTOFF_HI: | |
9942 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9943 | if (sec == NULL || sec->output_section == NULL) |
9944 | { | |
9945 | unresolved_reloc = TRUE; | |
9946 | break; | |
9947 | } | |
252b5132 | 9948 | addend -= sec->output_section->vma; |
252b5132 RH |
9949 | break; |
9950 | ||
70bccea4 | 9951 | /* Negative relocations. */ |
7619e7c7 AM |
9952 | case R_PPC_EMB_NADDR32: |
9953 | case R_PPC_EMB_NADDR16: | |
9954 | case R_PPC_EMB_NADDR16_LO: | |
9955 | case R_PPC_EMB_NADDR16_HI: | |
9956 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9957 | addend -= 2 * relocation; |
252b5132 RH |
9958 | break; |
9959 | ||
7619e7c7 AM |
9960 | case R_PPC_COPY: |
9961 | case R_PPC_GLOB_DAT: | |
9962 | case R_PPC_JMP_SLOT: | |
9963 | case R_PPC_RELATIVE: | |
e054468f | 9964 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9965 | case R_PPC_PLT32: |
9966 | case R_PPC_PLTREL32: | |
7619e7c7 AM |
9967 | case R_PPC_ADDR30: |
9968 | case R_PPC_EMB_RELSEC16: | |
9969 | case R_PPC_EMB_RELST_LO: | |
9970 | case R_PPC_EMB_RELST_HI: | |
9971 | case R_PPC_EMB_RELST_HA: | |
9972 | case R_PPC_EMB_BIT_FLD: | |
cf97bcb0 AM |
9973 | /* xgettext:c-format */ |
9974 | _bfd_error_handler (_("%pB: %s unsupported"), | |
9975 | input_bfd, howto->name); | |
252b5132 RH |
9976 | |
9977 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9978 | ret = FALSE; |
c316a17c | 9979 | goto copy_reloc; |
7619e7c7 | 9980 | } |
252b5132 | 9981 | |
23cedd1d AM |
9982 | switch (r_type) |
9983 | { | |
9984 | default: | |
9985 | break; | |
9986 | ||
9987 | case R_PPC_PLTCALL: | |
9988 | if (unresolved_reloc) | |
9989 | { | |
9990 | bfd_byte *p = contents + rel->r_offset; | |
9991 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
9992 | insn &= 1; | |
9993 | bfd_put_32 (input_bfd, B | insn, p); | |
9994 | unresolved_reloc = save_unresolved_reloc; | |
9995 | r_type = R_PPC_REL24; | |
9996 | howto = ppc_elf_howto_table[r_type]; | |
9997 | } | |
9998 | else if (htab->plt_type != PLT_NEW) | |
9999 | info->callbacks->einfo | |
10000 | (_("%P: %H: %s relocation unsupported for bss-plt\n"), | |
10001 | input_bfd, input_section, rel->r_offset, | |
10002 | howto->name); | |
10003 | break; | |
10004 | ||
10005 | case R_PPC_PLTSEQ: | |
10006 | case R_PPC_PLT16_HA: | |
10007 | case R_PPC_PLT16_LO: | |
10008 | if (unresolved_reloc) | |
10009 | { | |
10010 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
10011 | bfd_put_32 (input_bfd, NOP, p); | |
10012 | unresolved_reloc = FALSE; | |
10013 | r_type = R_PPC_NONE; | |
10014 | howto = ppc_elf_howto_table[r_type]; | |
10015 | } | |
10016 | else if (htab->plt_type != PLT_NEW) | |
10017 | info->callbacks->einfo | |
10018 | (_("%P: %H: %s relocation unsupported for bss-plt\n"), | |
10019 | input_bfd, input_section, rel->r_offset, | |
10020 | howto->name); | |
10021 | break; | |
10022 | } | |
10023 | ||
7619e7c7 AM |
10024 | /* Do any further special processing. */ |
10025 | switch (r_type) | |
10026 | { | |
10027 | default: | |
10028 | break; | |
10029 | ||
10030 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 10031 | case R_PPC_REL16_HA: |
a680de9a | 10032 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
10033 | case R_PPC_SECTOFF_HA: |
10034 | case R_PPC_TPREL16_HA: | |
10035 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
10036 | case R_PPC_EMB_NADDR16_HA: |
10037 | case R_PPC_EMB_RELST_HA: | |
10038 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 10039 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
10040 | 'sec' would be NULL, and we should leave the symbol |
10041 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
10042 | if (sec == NULL) |
10043 | break; | |
1a0670f3 | 10044 | /* Fall through. */ |
5c5f6e17 AM |
10045 | |
10046 | case R_PPC_PLT16_HA: | |
10047 | case R_PPC_GOT16_HA: | |
10048 | case R_PPC_GOT_TLSGD16_HA: | |
10049 | case R_PPC_GOT_TLSLD16_HA: | |
10050 | case R_PPC_GOT_TPREL16_HA: | |
10051 | case R_PPC_GOT_DTPREL16_HA: | |
10052 | /* Add 0x10000 if sign bit in 0:15 is set. | |
10053 | Bits 0:15 are not used. */ | |
10054 | addend += 0x8000; | |
7619e7c7 | 10055 | break; |
1fe532cf AM |
10056 | |
10057 | case R_PPC_ADDR16: | |
10058 | case R_PPC_ADDR16_LO: | |
10059 | case R_PPC_GOT16: | |
10060 | case R_PPC_GOT16_LO: | |
10061 | case R_PPC_SDAREL16: | |
10062 | case R_PPC_SECTOFF: | |
10063 | case R_PPC_SECTOFF_LO: | |
10064 | case R_PPC_DTPREL16: | |
10065 | case R_PPC_DTPREL16_LO: | |
10066 | case R_PPC_TPREL16: | |
10067 | case R_PPC_TPREL16_LO: | |
10068 | case R_PPC_GOT_TLSGD16: | |
10069 | case R_PPC_GOT_TLSGD16_LO: | |
10070 | case R_PPC_GOT_TLSLD16: | |
10071 | case R_PPC_GOT_TLSLD16_LO: | |
10072 | case R_PPC_GOT_DTPREL16: | |
10073 | case R_PPC_GOT_DTPREL16_LO: | |
10074 | case R_PPC_GOT_TPREL16: | |
10075 | case R_PPC_GOT_TPREL16_LO: | |
10076 | { | |
10077 | /* The 32-bit ABI lacks proper relocations to deal with | |
10078 | certain 64-bit instructions. Prevent damage to bits | |
10079 | that make up part of the insn opcode. */ | |
10080 | unsigned int insn, mask, lobit; | |
10081 | ||
95f0d0d2 | 10082 | insn = bfd_get_32 (input_bfd, |
c316a17c | 10083 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
10084 | mask = 0; |
10085 | if (is_insn_ds_form (insn)) | |
10086 | mask = 3; | |
10087 | else if (is_insn_dq_form (insn)) | |
10088 | mask = 15; | |
10089 | else | |
10090 | break; | |
a680de9a PB |
10091 | relocation += addend; |
10092 | addend = insn & mask; | |
10093 | lobit = mask & relocation; | |
1fe532cf AM |
10094 | if (lobit != 0) |
10095 | { | |
a680de9a | 10096 | relocation ^= lobit; |
1fe532cf | 10097 | info->callbacks->einfo |
695344c0 | 10098 | /* xgettext:c-format */ |
174d0a74 | 10099 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
10100 | input_bfd, input_section, rel->r_offset, |
10101 | howto->name, sym_name, mask + 1); | |
10102 | bfd_set_error (bfd_error_bad_value); | |
10103 | ret = FALSE; | |
10104 | } | |
1fe532cf AM |
10105 | } |
10106 | break; | |
252b5132 RH |
10107 | } |
10108 | ||
252b5132 | 10109 | #ifdef DEBUG |
55fd94b0 AM |
10110 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
10111 | "offset = %ld, addend = %ld\n", | |
252b5132 | 10112 | howto->name, |
8da6118f | 10113 | (int) r_type, |
252b5132 RH |
10114 | sym_name, |
10115 | r_symndx, | |
7619e7c7 | 10116 | (long) rel->r_offset, |
8da6118f | 10117 | (long) addend); |
252b5132 RH |
10118 | #endif |
10119 | ||
7619e7c7 AM |
10120 | if (unresolved_reloc |
10121 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
10122 | && h->def_dynamic) |
10123 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
10124 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 10125 | { |
25f53a85 | 10126 | info->callbacks->einfo |
695344c0 | 10127 | /* xgettext:c-format */ |
174d0a74 | 10128 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 10129 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 10130 | howto->name, |
7619e7c7 AM |
10131 | sym_name); |
10132 | ret = FALSE; | |
10133 | } | |
10134 | ||
86c95733 AM |
10135 | /* 16-bit fields in insns mostly have signed values, but a |
10136 | few insns have 16-bit unsigned values. Really, we should | |
10137 | have different reloc types. */ | |
10138 | if (howto->complain_on_overflow != complain_overflow_dont | |
10139 | && howto->dst_mask == 0xffff | |
10140 | && (input_section->flags & SEC_CODE) != 0) | |
10141 | { | |
10142 | enum complain_overflow complain = complain_overflow_signed; | |
10143 | ||
10144 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
10145 | { | |
10146 | unsigned int insn; | |
10147 | ||
10148 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
10149 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
10150 | complain = complain_overflow_bitfield; | |
10151 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
10152 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
10153 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
10154 | complain = complain_overflow_unsigned; |
10155 | } | |
10156 | if (howto->complain_on_overflow != complain) | |
10157 | { | |
10158 | alt_howto = *howto; | |
10159 | alt_howto.complain_on_overflow = complain; | |
10160 | howto = &alt_howto; | |
10161 | } | |
10162 | } | |
10163 | ||
a680de9a PB |
10164 | if (r_type == R_PPC_REL16DX_HA) |
10165 | { | |
10166 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
10167 | if (rel->r_offset + 4 > input_section->size) | |
10168 | r = bfd_reloc_outofrange; | |
10169 | else | |
10170 | { | |
10171 | unsigned int insn; | |
10172 | ||
10173 | relocation += addend; | |
10174 | relocation -= (rel->r_offset | |
10175 | + input_section->output_offset | |
10176 | + input_section->output_section->vma); | |
10177 | relocation >>= 16; | |
10178 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
10179 | insn &= ~0x1fffc1; | |
10180 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
10181 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
10182 | r = bfd_reloc_ok; | |
10183 | } | |
10184 | } | |
10185 | else | |
10186 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
10187 | rel->r_offset, relocation, addend); | |
252b5132 | 10188 | |
7619e7c7 | 10189 | if (r != bfd_reloc_ok) |
252b5132 | 10190 | { |
7619e7c7 | 10191 | if (r == bfd_reloc_overflow) |
252b5132 | 10192 | { |
c3301df1 | 10193 | overflow: |
8131c122 AM |
10194 | /* On code like "if (foo) foo();" don't report overflow |
10195 | on a branch to zero when foo is undefined. */ | |
10196 | if (!warned | |
10197 | && !(h != NULL | |
10198 | && (h->root.type == bfd_link_hash_undefweak | |
10199 | || h->root.type == bfd_link_hash_undefined) | |
10200 | && is_branch_reloc (r_type))) | |
1a72702b AM |
10201 | info->callbacks->reloc_overflow |
10202 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
10203 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
10204 | } |
10205 | else | |
10206 | { | |
25f53a85 | 10207 | info->callbacks->einfo |
695344c0 | 10208 | /* xgettext:c-format */ |
174d0a74 | 10209 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
10210 | input_bfd, input_section, rel->r_offset, |
10211 | howto->name, sym_name, (int) r); | |
7619e7c7 | 10212 | ret = FALSE; |
252b5132 RH |
10213 | } |
10214 | } | |
c316a17c AM |
10215 | copy_reloc: |
10216 | if (wrel != rel) | |
10217 | *wrel = *rel; | |
10218 | } | |
10219 | ||
10220 | if (wrel != rel) | |
10221 | { | |
10222 | Elf_Internal_Shdr *rel_hdr; | |
10223 | size_t deleted = rel - wrel; | |
10224 | ||
10225 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
10226 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
10227 | if (rel_hdr->sh_size == 0) | |
10228 | { | |
10229 | /* It is too late to remove an empty reloc section. Leave | |
10230 | one NONE reloc. | |
10231 | ??? What is wrong with an empty section??? */ | |
10232 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
10233 | deleted -= 1; | |
10234 | wrel++; | |
10235 | } | |
10236 | relend = wrel; | |
10237 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
10238 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
10239 | input_section->reloc_count -= deleted; | |
252b5132 RH |
10240 | } |
10241 | ||
252b5132 RH |
10242 | #ifdef DEBUG |
10243 | fprintf (stderr, "\n"); | |
10244 | #endif | |
10245 | ||
53291d1f AM |
10246 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
10247 | && input_section->size != input_section->rawsize | |
10248 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
10249 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
10250 | { | |
10251 | /* Branch around the trampolines. */ | |
10252 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
10253 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
10254 | } | |
10255 | ||
5446cbdf | 10256 | if (htab->params->ppc476_workaround |
795bc6b3 | 10257 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 10258 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
10259 | || (input_section->output_section->alignment_power |
10260 | >= htab->params->pagesize_p2))) | |
5446cbdf | 10261 | { |
5446cbdf | 10262 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 10263 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 10264 | |
5446cbdf | 10265 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
10266 | { |
10267 | bfd_byte *p; | |
10268 | unsigned int n; | |
10269 | bfd_byte fill[4]; | |
10270 | ||
10271 | bfd_put_32 (input_bfd, BA, fill); | |
10272 | p = contents + input_section->size - relax_info->workaround_size; | |
10273 | n = relax_info->workaround_size >> 2; | |
10274 | while (n--) | |
10275 | { | |
10276 | memcpy (p, fill, 4); | |
10277 | p += 4; | |
10278 | } | |
10279 | } | |
5446cbdf AM |
10280 | |
10281 | /* The idea is: Replace the last instruction on a page with a | |
10282 | branch to a patch area. Put the insn there followed by a | |
10283 | branch back to the next page. Complicated a little by | |
10284 | needing to handle moved conditional branches, and by not | |
10285 | wanting to touch data-in-text. */ | |
10286 | ||
10287 | start_addr = (input_section->output_section->vma | |
10288 | + input_section->output_offset); | |
10289 | end_addr = (start_addr + input_section->size | |
10290 | - relax_info->workaround_size); | |
10291 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
10292 | addr < end_addr; | |
10293 | addr += pagesize) | |
10294 | { | |
10295 | bfd_vma offset = addr - start_addr; | |
10296 | Elf_Internal_Rela *lo, *hi; | |
10297 | bfd_boolean is_data; | |
10298 | bfd_vma patch_off, patch_addr; | |
10299 | unsigned int insn; | |
10300 | ||
10301 | /* Do we have a data reloc at this offset? If so, leave | |
10302 | the word alone. */ | |
10303 | is_data = FALSE; | |
10304 | lo = relocs; | |
668e22e5 AM |
10305 | hi = relend; |
10306 | rel = NULL; | |
5446cbdf AM |
10307 | while (lo < hi) |
10308 | { | |
10309 | rel = lo + (hi - lo) / 2; | |
10310 | if (rel->r_offset < offset) | |
10311 | lo = rel + 1; | |
668e22e5 | 10312 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
10313 | hi = rel; |
10314 | else | |
10315 | { | |
10316 | switch (ELF32_R_TYPE (rel->r_info)) | |
10317 | { | |
10318 | case R_PPC_ADDR32: | |
10319 | case R_PPC_UADDR32: | |
10320 | case R_PPC_REL32: | |
10321 | case R_PPC_ADDR30: | |
10322 | is_data = TRUE; | |
10323 | break; | |
10324 | default: | |
10325 | break; | |
10326 | } | |
10327 | break; | |
10328 | } | |
10329 | } | |
10330 | if (is_data) | |
10331 | continue; | |
10332 | ||
b4ab4364 AM |
10333 | /* Some instructions can be left alone too. Unconditional |
10334 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
10335 | avoid the icache failure. | |
10336 | ||
10337 | The problem occurs due to prefetch across a page boundary | |
10338 | where stale instructions can be fetched from the next | |
10339 | page, and the mechanism for flushing these bad | |
10340 | instructions fails under certain circumstances. The | |
10341 | unconditional branches: | |
10342 | 1) Branch: b, bl, ba, bla, | |
10343 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
10344 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
10345 | where (2) and (3) have BO=0x14 making them unconditional, | |
10346 | prevent the bad prefetch because the prefetch itself is | |
10347 | affected by these instructions. This happens even if the | |
10348 | instruction is not executed. | |
10349 | ||
10350 | A bctr example: | |
10351 | . | |
10352 | . lis 9,new_page@ha | |
10353 | . addi 9,9,new_page@l | |
10354 | . mtctr 9 | |
10355 | . bctr | |
10356 | . nop | |
10357 | . nop | |
10358 | . new_page: | |
10359 | . | |
10360 | The bctr is not predicted taken due to ctr not being | |
10361 | ready, so prefetch continues on past the bctr into the | |
10362 | new page which might have stale instructions. If they | |
10363 | fail to be flushed, then they will be executed after the | |
10364 | bctr executes. Either of the following modifications | |
10365 | prevent the bad prefetch from happening in the first | |
10366 | place: | |
10367 | . | |
1b786873 L |
10368 | . lis 9,new_page@ha lis 9,new_page@ha |
10369 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
10370 | . mtctr 9 mtctr 9 | |
10371 | . bctr bctr | |
b4ab4364 | 10372 | . nop b somewhere_else |
1b786873 L |
10373 | . b somewhere_else nop |
10374 | . new_page: new_page: | |
b4ab4364 | 10375 | . */ |
5446cbdf | 10376 | insn = bfd_get_32 (input_bfd, contents + offset); |
07d6d2b8 AM |
10377 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
10378 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
10379 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 10380 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 | 10381 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 10382 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
10383 | continue; |
10384 | ||
10385 | patch_addr = (start_addr + input_section->size | |
10386 | - relax_info->workaround_size); | |
10387 | patch_addr = (patch_addr + 15) & -16; | |
10388 | patch_off = patch_addr - start_addr; | |
10389 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
10390 | |
10391 | if (rel != NULL | |
10392 | && rel->r_offset >= offset | |
10393 | && rel->r_offset < offset + 4) | |
10394 | { | |
f8b44781 AM |
10395 | asection *sreloc; |
10396 | ||
668e22e5 AM |
10397 | /* If the insn we are patching had a reloc, adjust the |
10398 | reloc r_offset so that the reloc applies to the moved | |
10399 | location. This matters for -r and --emit-relocs. */ | |
10400 | if (rel + 1 != relend) | |
10401 | { | |
10402 | Elf_Internal_Rela tmp = *rel; | |
10403 | ||
10404 | /* Keep the relocs sorted by r_offset. */ | |
10405 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
10406 | relend[-1] = tmp; | |
10407 | } | |
10408 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
10409 | |
10410 | /* Adjust REL16 addends too. */ | |
10411 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
10412 | { | |
10413 | case R_PPC_REL16: | |
10414 | case R_PPC_REL16_LO: | |
10415 | case R_PPC_REL16_HI: | |
10416 | case R_PPC_REL16_HA: | |
10417 | relend[-1].r_addend += patch_off - offset; | |
10418 | break; | |
10419 | default: | |
10420 | break; | |
10421 | } | |
10422 | ||
10423 | /* If we are building a PIE or shared library with | |
10424 | non-PIC objects, perhaps we had a dynamic reloc too? | |
10425 | If so, the dynamic reloc must move with the insn. */ | |
10426 | sreloc = elf_section_data (input_section)->sreloc; | |
10427 | if (sreloc != NULL) | |
10428 | { | |
1d5c94cb | 10429 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
10430 | bfd_vma soffset; |
10431 | ||
1d5c94cb AM |
10432 | slo = (Elf32_External_Rela *) sreloc->contents; |
10433 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
10434 | soffset = (offset + input_section->output_section->vma |
10435 | + input_section->output_offset); | |
10436 | while (slo < shi) | |
10437 | { | |
1d5c94cb AM |
10438 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
10439 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
10440 | &outrel); | |
f8b44781 AM |
10441 | if (outrel.r_offset < soffset) |
10442 | slo = srel + 1; | |
10443 | else if (outrel.r_offset > soffset + 3) | |
10444 | shi = srel; | |
10445 | else | |
10446 | { | |
1d5c94cb | 10447 | if (srel + 1 != srelend) |
f8b44781 | 10448 | { |
1d5c94cb AM |
10449 | memmove (srel, srel + 1, |
10450 | (srelend - (srel + 1)) * sizeof (*srel)); | |
10451 | srel = srelend - 1; | |
f8b44781 AM |
10452 | } |
10453 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
10454 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
10455 | (bfd_byte *) srel); | |
f8b44781 AM |
10456 | break; |
10457 | } | |
10458 | } | |
10459 | } | |
668e22e5 AM |
10460 | } |
10461 | else | |
10462 | rel = NULL; | |
10463 | ||
5446cbdf AM |
10464 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
10465 | && (insn & 2) == 0 /* relative */) | |
10466 | { | |
10467 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
10468 | ||
10469 | delta += offset - patch_off; | |
0e1862bb | 10470 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 10471 | delta = 0; |
0e1862bb | 10472 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
10473 | { |
10474 | enum elf_ppc_reloc_type r_type; | |
10475 | ||
10476 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
10477 | if (r_type == R_PPC_REL14_BRTAKEN) | |
10478 | insn |= BRANCH_PREDICT_BIT; | |
10479 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
10480 | insn &= ~BRANCH_PREDICT_BIT; | |
10481 | else | |
10482 | BFD_ASSERT (r_type == R_PPC_REL14); | |
10483 | ||
10484 | if ((r_type == R_PPC_REL14_BRTAKEN | |
10485 | || r_type == R_PPC_REL14_BRNTAKEN) | |
10486 | && delta + 0x8000 < 0x10000 | |
10487 | && (bfd_signed_vma) delta < 0) | |
10488 | insn ^= BRANCH_PREDICT_BIT; | |
10489 | } | |
5446cbdf AM |
10490 | if (delta + 0x8000 < 0x10000) |
10491 | { | |
10492 | bfd_put_32 (input_bfd, | |
10493 | (insn & ~0xfffc) | (delta & 0xfffc), | |
10494 | contents + patch_off); | |
10495 | patch_off += 4; | |
10496 | bfd_put_32 (input_bfd, | |
10497 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
10498 | contents + patch_off); | |
10499 | patch_off += 4; | |
10500 | } | |
10501 | else | |
10502 | { | |
668e22e5 AM |
10503 | if (rel != NULL) |
10504 | { | |
10505 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
10506 | ||
10507 | relend[-1].r_offset += 8; | |
10508 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
10509 | } | |
5446cbdf AM |
10510 | bfd_put_32 (input_bfd, |
10511 | (insn & ~0xfffc) | 8, | |
10512 | contents + patch_off); | |
10513 | patch_off += 4; | |
10514 | bfd_put_32 (input_bfd, | |
10515 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
10516 | contents + patch_off); | |
10517 | patch_off += 4; | |
10518 | bfd_put_32 (input_bfd, | |
10519 | B | ((delta - 8) & 0x3fffffc), | |
10520 | contents + patch_off); | |
10521 | patch_off += 4; | |
10522 | } | |
10523 | } | |
10524 | else | |
10525 | { | |
10526 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
10527 | patch_off += 4; | |
10528 | bfd_put_32 (input_bfd, | |
10529 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
10530 | contents + patch_off); | |
10531 | patch_off += 4; | |
10532 | } | |
10533 | BFD_ASSERT (patch_off <= input_section->size); | |
10534 | relax_info->workaround_size = input_section->size - patch_off; | |
10535 | } | |
10536 | } | |
10537 | ||
252b5132 RH |
10538 | return ret; |
10539 | } | |
252b5132 | 10540 | \f |
49c09209 | 10541 | /* Write out the PLT relocs and entries for H. */ |
c5fccbec | 10542 | |
b34976b6 | 10543 | static bfd_boolean |
49c09209 | 10544 | write_global_sym_plt (struct elf_link_hash_entry *h, void *inf) |
e1a9cb8e | 10545 | { |
49c09209 AM |
10546 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10547 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
a6aa5195 AM |
10548 | struct plt_entry *ent; |
10549 | bfd_boolean doneone; | |
e1a9cb8e | 10550 | |
a6aa5195 AM |
10551 | doneone = FALSE; |
10552 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
10553 | if (ent->plt.offset != (bfd_vma) -1) | |
10554 | { | |
10555 | if (!doneone) | |
10556 | { | |
10557 | Elf_Internal_Rela rela; | |
10558 | bfd_byte *loc; | |
10559 | bfd_vma reloc_index; | |
2d7ad24e AM |
10560 | asection *plt = htab->elf.splt; |
10561 | asection *relplt = htab->elf.srelplt; | |
e1a9cb8e | 10562 | |
e054468f | 10563 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10564 | || !htab->elf.dynamic_sections_created |
10565 | || h->dynindx == -1) | |
9d8504b1 PB |
10566 | reloc_index = ent->plt.offset / 4; |
10567 | else | |
10568 | { | |
10569 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
10570 | / htab->plt_slot_size); | |
10571 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 10572 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
10573 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
10574 | } | |
10575 | ||
a6aa5195 AM |
10576 | /* This symbol has an entry in the procedure linkage table. |
10577 | Set it up. */ | |
e054468f | 10578 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
10579 | && htab->elf.dynamic_sections_created |
10580 | && h->dynindx != -1) | |
a6aa5195 | 10581 | { |
9d8504b1 PB |
10582 | bfd_vma got_offset; |
10583 | const bfd_vma *plt_entry; | |
5b914448 | 10584 | |
9d8504b1 PB |
10585 | /* The first three entries in .got.plt are reserved. */ |
10586 | got_offset = (reloc_index + 3) * 4; | |
10587 | ||
10588 | /* Use the right PLT. */ | |
0e1862bb | 10589 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
10590 | : ppc_elf_vxworks_plt_entry; |
10591 | ||
10592 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 10593 | if (bfd_link_pic (info)) |
9d8504b1 | 10594 | { |
49c09209 | 10595 | bfd_put_32 (info->output_bfd, |
e87d4038 | 10596 | plt_entry[0] | PPC_HA (got_offset), |
2d7ad24e | 10597 | plt->contents + ent->plt.offset + 0); |
49c09209 | 10598 | bfd_put_32 (info->output_bfd, |
e87d4038 | 10599 | plt_entry[1] | PPC_LO (got_offset), |
2d7ad24e | 10600 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10601 | } |
10602 | else | |
10603 | { | |
e87d4038 | 10604 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10605 | |
49c09209 | 10606 | bfd_put_32 (info->output_bfd, |
e87d4038 | 10607 | plt_entry[0] | PPC_HA (got_loc), |
2d7ad24e | 10608 | plt->contents + ent->plt.offset + 0); |
49c09209 | 10609 | bfd_put_32 (info->output_bfd, |
e87d4038 | 10610 | plt_entry[1] | PPC_LO (got_loc), |
2d7ad24e | 10611 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10612 | } |
10613 | ||
49c09209 | 10614 | bfd_put_32 (info->output_bfd, plt_entry[2], |
2d7ad24e | 10615 | plt->contents + ent->plt.offset + 8); |
49c09209 | 10616 | bfd_put_32 (info->output_bfd, plt_entry[3], |
2d7ad24e | 10617 | plt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
10618 | |
10619 | /* This instruction is an immediate load. The value loaded is | |
10620 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
10621 | start of the .rela.plt section. The value is stored in the | |
10622 | low-order 16 bits of the load instruction. */ | |
10623 | /* NOTE: It appears that this is now an index rather than a | |
10624 | prescaled offset. */ | |
49c09209 | 10625 | bfd_put_32 (info->output_bfd, |
9d8504b1 | 10626 | plt_entry[4] | reloc_index, |
2d7ad24e | 10627 | plt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
10628 | /* This instruction is a PC-relative branch whose target is |
10629 | the start of the PLT section. The address of this branch | |
10630 | instruction is 20 bytes beyond the start of this PLT entry. | |
10631 | The address is encoded in bits 6-29, inclusive. The value | |
10632 | stored is right-shifted by two bits, permitting a 26-bit | |
10633 | offset. */ | |
49c09209 | 10634 | bfd_put_32 (info->output_bfd, |
5b914448 | 10635 | (plt_entry[5] |
9d8504b1 | 10636 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
2d7ad24e | 10637 | plt->contents + ent->plt.offset + 20); |
49c09209 | 10638 | bfd_put_32 (info->output_bfd, plt_entry[6], |
2d7ad24e | 10639 | plt->contents + ent->plt.offset + 24); |
49c09209 | 10640 | bfd_put_32 (info->output_bfd, plt_entry[7], |
2d7ad24e | 10641 | plt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
10642 | |
10643 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 10644 | the address immediately after the "bctr" instruction |
9d8504b1 | 10645 | in this PLT entry. */ |
2d7ad24e AM |
10646 | bfd_put_32 (info->output_bfd, (plt->output_section->vma |
10647 | + plt->output_offset | |
10648 | + ent->plt.offset + 16), | |
ce558b89 | 10649 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 10650 | |
0e1862bb | 10651 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
10652 | { |
10653 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
10654 | loc = htab->srelplt2->contents | |
10655 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
10656 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
10657 | * sizeof (Elf32_External_Rela)); | |
10658 | ||
10659 | /* Provide the @ha relocation for the first instruction. */ | |
2d7ad24e AM |
10660 | rela.r_offset = (plt->output_section->vma |
10661 | + plt->output_offset | |
9d8504b1 | 10662 | + ent->plt.offset + 2); |
636ce3f5 | 10663 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10664 | R_PPC_ADDR16_HA); |
10665 | rela.r_addend = got_offset; | |
49c09209 | 10666 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
10667 | loc += sizeof (Elf32_External_Rela); |
10668 | ||
10669 | /* Provide the @l relocation for the second instruction. */ | |
2d7ad24e AM |
10670 | rela.r_offset = (plt->output_section->vma |
10671 | + plt->output_offset | |
9d8504b1 | 10672 | + ent->plt.offset + 6); |
636ce3f5 | 10673 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10674 | R_PPC_ADDR16_LO); |
10675 | rela.r_addend = got_offset; | |
49c09209 | 10676 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
10677 | loc += sizeof (Elf32_External_Rela); |
10678 | ||
10679 | /* Provide a relocation for the GOT entry corresponding to this | |
10680 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
10681 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10682 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 10683 | + got_offset); |
7325306f | 10684 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
10685 | R_PPC_ADDR32); |
10686 | rela.r_addend = ent->plt.offset + 16; | |
49c09209 | 10687 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
10688 | } |
10689 | ||
10690 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
10691 | In particular, the offset for the relocation is not the | |
10692 | address of the PLT entry for this function, as specified | |
10693 | by the ABI. Instead, the offset is set to the address of | |
10694 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
10695 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10696 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 10697 | + got_offset); |
2d7ad24e | 10698 | rela.r_addend = 0; |
a6aa5195 AM |
10699 | } |
10700 | else | |
10701 | { | |
2d7ad24e | 10702 | rela.r_addend = 0; |
25f23106 AM |
10703 | if (!htab->elf.dynamic_sections_created |
10704 | || h->dynindx == -1) | |
2d7ad24e AM |
10705 | { |
10706 | if (h->type == STT_GNU_IFUNC) | |
10707 | { | |
10708 | plt = htab->elf.iplt; | |
10709 | relplt = htab->elf.irelplt; | |
10710 | } | |
10711 | else | |
10712 | { | |
10713 | plt = htab->pltlocal; | |
10714 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10715 | } | |
10716 | if (h->def_regular | |
10717 | && (h->root.type == bfd_link_hash_defined | |
10718 | || h->root.type == bfd_link_hash_defweak)) | |
10719 | rela.r_addend = SYM_VAL (h); | |
10720 | } | |
e054468f | 10721 | |
2d7ad24e | 10722 | if (relplt == NULL) |
9d8504b1 | 10723 | { |
2d7ad24e AM |
10724 | loc = plt->contents + ent->plt.offset; |
10725 | bfd_put_32 (info->output_bfd, rela.r_addend, loc); | |
9d8504b1 PB |
10726 | } |
10727 | else | |
10728 | { | |
2d7ad24e AM |
10729 | rela.r_offset = (plt->output_section->vma |
10730 | + plt->output_offset | |
10731 | + ent->plt.offset); | |
10732 | ||
10733 | if (htab->plt_type == PLT_OLD | |
10734 | || !htab->elf.dynamic_sections_created | |
10735 | || h->dynindx == -1) | |
10736 | { | |
10737 | /* We don't need to fill in the .plt. The ppc dynamic | |
10738 | linker will fill it in. */ | |
10739 | } | |
10740 | else | |
10741 | { | |
10742 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
10743 | + htab->glink->output_section->vma | |
10744 | + htab->glink->output_offset); | |
10745 | bfd_put_32 (info->output_bfd, val, | |
10746 | plt->contents + ent->plt.offset); | |
10747 | } | |
9d8504b1 | 10748 | } |
a6aa5195 | 10749 | } |
e1a9cb8e | 10750 | |
2d7ad24e | 10751 | if (relplt != NULL) |
e054468f | 10752 | { |
2d7ad24e AM |
10753 | /* Fill in the entry in the .rela.plt section. */ |
10754 | if (!htab->elf.dynamic_sections_created | |
10755 | || h->dynindx == -1) | |
10756 | { | |
10757 | if (h->type == STT_GNU_IFUNC) | |
10758 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10759 | else | |
10760 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
10761 | loc = relplt->contents + (relplt->reloc_count++ | |
10762 | * sizeof (Elf32_External_Rela)); | |
10763 | htab->local_ifunc_resolver = 1; | |
10764 | } | |
10765 | else | |
10766 | { | |
10767 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
10768 | loc = relplt->contents + (reloc_index | |
10769 | * sizeof (Elf32_External_Rela)); | |
10770 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
10771 | htab->maybe_local_ifunc_resolver = 1; | |
10772 | } | |
10773 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
82e66161 | 10774 | } |
a6aa5195 AM |
10775 | doneone = TRUE; |
10776 | } | |
e1a9cb8e | 10777 | |
e054468f | 10778 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10779 | || !htab->elf.dynamic_sections_created |
10780 | || h->dynindx == -1) | |
a6aa5195 | 10781 | { |
a7f2871e | 10782 | unsigned char *p; |
49c09209 | 10783 | asection *plt = htab->elf.splt; |
9e390558 | 10784 | |
25f23106 AM |
10785 | if (!htab->elf.dynamic_sections_created |
10786 | || h->dynindx == -1) | |
2d7ad24e AM |
10787 | { |
10788 | if (h->type == STT_GNU_IFUNC) | |
10789 | plt = htab->elf.iplt; | |
10790 | else | |
10791 | break; | |
10792 | } | |
e1a9cb8e | 10793 | |
a7f2871e | 10794 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
49c09209 | 10795 | write_glink_stub (h, ent, plt, p, info); |
e1a9cb8e | 10796 | |
0e1862bb | 10797 | if (!bfd_link_pic (info)) |
e054468f AM |
10798 | /* We only need one non-PIC glink stub. */ |
10799 | break; | |
a6aa5195 AM |
10800 | } |
10801 | else | |
10802 | break; | |
10803 | } | |
49c09209 AM |
10804 | return TRUE; |
10805 | } | |
10806 | ||
10807 | /* Finish up PLT handling. */ | |
10808 | ||
10809 | bfd_boolean | |
10810 | ppc_finish_symbols (struct bfd_link_info *info) | |
10811 | { | |
10812 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
10813 | bfd *ibfd; | |
10814 | ||
10815 | if (!htab) | |
10816 | return TRUE; | |
10817 | ||
10818 | elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info); | |
10819 | ||
10820 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
10821 | { | |
10822 | bfd_vma *local_got, *end_local_got; | |
10823 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
10824 | Elf_Internal_Shdr *symtab_hdr; | |
10825 | bfd_size_type locsymcount; | |
10826 | Elf_Internal_Sym *local_syms = NULL; | |
10827 | struct plt_entry *ent; | |
10828 | ||
10829 | if (!is_ppc_elf (ibfd)) | |
10830 | continue; | |
10831 | ||
10832 | local_got = elf_local_got_offsets (ibfd); | |
10833 | if (!local_got) | |
10834 | continue; | |
10835 | ||
10836 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10837 | locsymcount = symtab_hdr->sh_info; | |
10838 | end_local_got = local_got + locsymcount; | |
10839 | local_plt = (struct plt_entry **) end_local_got; | |
10840 | end_local_plt = local_plt + locsymcount; | |
10841 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
10842 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
10843 | { | |
10844 | if (ent->plt.offset != (bfd_vma) -1) | |
10845 | { | |
10846 | Elf_Internal_Sym *sym; | |
10847 | asection *sym_sec; | |
10848 | asection *plt, *relplt; | |
10849 | bfd_byte *loc; | |
10850 | bfd_vma val; | |
10851 | Elf_Internal_Rela rela; | |
10852 | ||
10853 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
10854 | lplt - local_plt, ibfd)) | |
10855 | { | |
10856 | if (local_syms != NULL | |
10857 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10858 | free (local_syms); | |
10859 | return FALSE; | |
10860 | } | |
10861 | ||
10862 | val = sym->st_value; | |
10863 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
10864 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
10865 | ||
2d7ad24e AM |
10866 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
10867 | { | |
10868 | htab->local_ifunc_resolver = 1; | |
10869 | plt = htab->elf.iplt; | |
10870 | relplt = htab->elf.irelplt; | |
10871 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10872 | } | |
10873 | else | |
10874 | { | |
10875 | plt = htab->pltlocal; | |
10876 | if (bfd_link_pic (info)) | |
10877 | { | |
10878 | relplt = htab->relpltlocal; | |
10879 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
10880 | } | |
10881 | else | |
10882 | { | |
10883 | loc = plt->contents + ent->plt.offset; | |
10884 | bfd_put_32 (info->output_bfd, val, loc); | |
10885 | continue; | |
10886 | } | |
10887 | } | |
49c09209 AM |
10888 | |
10889 | rela.r_offset = (ent->plt.offset | |
10890 | + plt->output_offset | |
10891 | + plt->output_section->vma); | |
49c09209 AM |
10892 | rela.r_addend = val; |
10893 | loc = relplt->contents + (relplt->reloc_count++ | |
10894 | * sizeof (Elf32_External_Rela)); | |
10895 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
10896 | } | |
10897 | if ((ent->glink_offset & 1) == 0) | |
10898 | { | |
10899 | unsigned char *p = ((unsigned char *) htab->glink->contents | |
10900 | + ent->glink_offset); | |
10901 | ||
10902 | write_glink_stub (NULL, ent, htab->elf.iplt, p, info); | |
10903 | ent->glink_offset |= 1; | |
10904 | } | |
10905 | } | |
10906 | ||
10907 | if (local_syms != NULL | |
10908 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10909 | { | |
10910 | if (!info->keep_memory) | |
10911 | free (local_syms); | |
10912 | else | |
10913 | symtab_hdr->contents = (unsigned char *) local_syms; | |
10914 | } | |
10915 | } | |
10916 | return TRUE; | |
10917 | } | |
10918 | ||
10919 | /* Finish up dynamic symbol handling. We set the contents of various | |
10920 | dynamic sections here. */ | |
10921 | ||
10922 | static bfd_boolean | |
10923 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, | |
10924 | struct bfd_link_info *info, | |
10925 | struct elf_link_hash_entry *h, | |
10926 | Elf_Internal_Sym *sym) | |
10927 | { | |
10928 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
10929 | struct plt_entry *ent; | |
10930 | ||
10931 | #ifdef DEBUG | |
10932 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
10933 | h->root.root.string); | |
10934 | #endif | |
10935 | ||
10936 | if (!h->def_regular | |
10937 | || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info))) | |
10938 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
10939 | if (ent->plt.offset != (bfd_vma) -1) | |
10940 | { | |
10941 | if (!h->def_regular) | |
10942 | { | |
10943 | /* Mark the symbol as undefined, rather than as | |
10944 | defined in the .plt section. Leave the value if | |
10945 | there were any relocations where pointer equality | |
10946 | matters (this is a clue for the dynamic linker, to | |
10947 | make function pointer comparisons work between an | |
10948 | application and shared library), otherwise set it | |
10949 | to zero. */ | |
10950 | sym->st_shndx = SHN_UNDEF; | |
10951 | if (!h->pointer_equality_needed) | |
10952 | sym->st_value = 0; | |
10953 | else if (!h->ref_regular_nonweak) | |
10954 | { | |
10955 | /* This breaks function pointer comparisons, but | |
10956 | that is better than breaking tests for a NULL | |
10957 | function pointer. */ | |
10958 | sym->st_value = 0; | |
10959 | } | |
10960 | } | |
10961 | else | |
10962 | { | |
10963 | /* Set the value of ifunc symbols in a non-pie | |
10964 | executable to the glink entry. This is to avoid | |
10965 | text relocations. We can't do this for ifunc in | |
10966 | allocate_dynrelocs, as we do for normal dynamic | |
10967 | function symbols with plt entries, because we need | |
10968 | to keep the original value around for the ifunc | |
10969 | relocation. */ | |
10970 | sym->st_shndx | |
10971 | = (_bfd_elf_section_from_bfd_section | |
10972 | (info->output_bfd, htab->glink->output_section)); | |
10973 | sym->st_value = (ent->glink_offset | |
10974 | + htab->glink->output_offset | |
10975 | + htab->glink->output_section->vma); | |
10976 | } | |
10977 | break; | |
10978 | } | |
e1a9cb8e | 10979 | |
25dbc73a AM |
10980 | if (h->needs_copy) |
10981 | { | |
10982 | asection *s; | |
10983 | Elf_Internal_Rela rela; | |
10984 | bfd_byte *loc; | |
e1a9cb8e | 10985 | |
25dbc73a | 10986 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 10987 | |
25dbc73a AM |
10988 | #ifdef DEBUG |
10989 | fprintf (stderr, ", copy"); | |
10990 | #endif | |
e1a9cb8e | 10991 | |
25dbc73a | 10992 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 10993 | |
4dc4a9a5 | 10994 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 10995 | s = htab->relsbss; |
afbf7e8e | 10996 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 10997 | s = htab->elf.sreldynrelro; |
25dbc73a | 10998 | else |
9d19e4fd | 10999 | s = htab->elf.srelbss; |
25dbc73a | 11000 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 11001 | |
e87d4038 | 11002 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
11003 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
11004 | rela.r_addend = 0; | |
11005 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
11006 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11007 | } | |
e1a9cb8e | 11008 | |
25dbc73a AM |
11009 | #ifdef DEBUG |
11010 | fprintf (stderr, "\n"); | |
11011 | #endif | |
e1a9cb8e | 11012 | |
25dbc73a AM |
11013 | return TRUE; |
11014 | } | |
11015 | \f | |
11016 | static enum elf_reloc_type_class | |
7e612e98 AM |
11017 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
11018 | const asection *rel_sec, | |
11019 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 11020 | { |
7e612e98 AM |
11021 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
11022 | ||
ce558b89 | 11023 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
11024 | return reloc_class_ifunc; |
11025 | ||
25dbc73a AM |
11026 | switch (ELF32_R_TYPE (rela->r_info)) |
11027 | { | |
11028 | case R_PPC_RELATIVE: | |
11029 | return reloc_class_relative; | |
25dbc73a AM |
11030 | case R_PPC_JMP_SLOT: |
11031 | return reloc_class_plt; | |
11032 | case R_PPC_COPY: | |
11033 | return reloc_class_copy; | |
11034 | default: | |
11035 | return reloc_class_normal; | |
11036 | } | |
e1a9cb8e | 11037 | } |
25dbc73a AM |
11038 | \f |
11039 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 11040 | |
25dbc73a AM |
11041 | static bfd_boolean |
11042 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
11043 | struct bfd_link_info *info) | |
e1a9cb8e | 11044 | { |
25dbc73a AM |
11045 | asection *sdyn; |
11046 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 11047 | bfd_vma got; |
e87d4038 AM |
11048 | bfd *dynobj; |
11049 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 11050 | |
25dbc73a AM |
11051 | #ifdef DEBUG |
11052 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
11053 | #endif | |
6b0817e5 | 11054 | |
25dbc73a | 11055 | htab = ppc_elf_hash_table (info); |
ce558b89 | 11056 | dynobj = htab->elf.dynobj; |
3d4d4302 | 11057 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 11058 | |
1fe44d79 AM |
11059 | got = 0; |
11060 | if (htab->elf.hgot != NULL) | |
e87d4038 | 11061 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 11062 | |
25dbc73a | 11063 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 11064 | { |
25dbc73a | 11065 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 11066 | |
ce558b89 | 11067 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 11068 | |
25dbc73a AM |
11069 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
11070 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
11071 | for (; dyncon < dynconend; dyncon++) | |
11072 | { | |
11073 | Elf_Internal_Dyn dyn; | |
11074 | asection *s; | |
e1a9cb8e | 11075 | |
9d8504b1 | 11076 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 11077 | |
25dbc73a AM |
11078 | switch (dyn.d_tag) |
11079 | { | |
11080 | case DT_PLTGOT: | |
9d8504b1 | 11081 | if (htab->is_vxworks) |
ce558b89 | 11082 | s = htab->elf.sgotplt; |
9d8504b1 | 11083 | else |
ce558b89 | 11084 | s = htab->elf.splt; |
25dbc73a AM |
11085 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
11086 | break; | |
86bbe32f | 11087 | |
25dbc73a | 11088 | case DT_PLTRELSZ: |
ce558b89 | 11089 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 11090 | break; |
e1a9cb8e | 11091 | |
25dbc73a | 11092 | case DT_JMPREL: |
ce558b89 | 11093 | s = htab->elf.srelplt; |
25dbc73a AM |
11094 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
11095 | break; | |
2f89ff8d | 11096 | |
1fe44d79 AM |
11097 | case DT_PPC_GOT: |
11098 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
11099 | break; |
11100 | ||
82e66161 AM |
11101 | case DT_TEXTREL: |
11102 | if (htab->local_ifunc_resolver) | |
11103 | info->callbacks->einfo | |
11104 | (_("%X%P: text relocations and GNU indirect " | |
11105 | "functions will result in a segfault at runtime\n")); | |
11106 | else if (htab->maybe_local_ifunc_resolver) | |
11107 | info->callbacks->einfo | |
11108 | (_("%P: warning: text relocations and GNU indirect " | |
11109 | "functions may result in a segfault at runtime\n")); | |
11110 | continue; | |
11111 | ||
25dbc73a | 11112 | default: |
7a2b07ff NS |
11113 | if (htab->is_vxworks |
11114 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11115 | break; | |
25dbc73a AM |
11116 | continue; |
11117 | } | |
4c45e5c9 | 11118 | |
25dbc73a AM |
11119 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11120 | } | |
11121 | } | |
4c45e5c9 | 11122 | |
6528b6eb AM |
11123 | if (htab->elf.sgot != NULL |
11124 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 11125 | { |
ce558b89 AM |
11126 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
11127 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 11128 | { |
e79f5955 | 11129 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 11130 | |
e87d4038 AM |
11131 | p += htab->elf.hgot->root.u.def.value; |
11132 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
11133 | { |
11134 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
11135 | so that a function can easily find the address of | |
11136 | _GLOBAL_OFFSET_TABLE_. */ | |
11137 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
11138 | < htab->elf.hgot->root.u.def.section->size); | |
11139 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
11140 | } | |
3b36f7e6 | 11141 | |
e87d4038 | 11142 | if (sdyn != NULL) |
e79f5955 AM |
11143 | { |
11144 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
11145 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
11146 | < htab->elf.hgot->root.u.def.section->size); | |
11147 | bfd_put_32 (output_bfd, val, p); | |
11148 | } | |
e87d4038 AM |
11149 | } |
11150 | else | |
11151 | { | |
695344c0 | 11152 | /* xgettext:c-format */ |
cf97bcb0 AM |
11153 | _bfd_error_handler (_("%s not defined in linker created %pA"), |
11154 | htab->elf.hgot->root.root.string, | |
11155 | (htab->elf.sgotplt != NULL | |
11156 | ? htab->elf.sgotplt : htab->elf.sgot)); | |
e87d4038 AM |
11157 | bfd_set_error (bfd_error_bad_value); |
11158 | ret = FALSE; | |
11159 | } | |
25dbc73a | 11160 | |
ce558b89 | 11161 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
11162 | } |
11163 | ||
9d8504b1 | 11164 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
11165 | if (htab->is_vxworks |
11166 | && htab->elf.splt != NULL | |
11167 | && htab->elf.splt->size != 0 | |
11168 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 11169 | { |
6528b6eb | 11170 | asection *splt = htab->elf.splt; |
9d8504b1 | 11171 | /* Use the right PLT. */ |
0e1862bb | 11172 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
11173 | ? ppc_elf_vxworks_pic_plt0_entry |
11174 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 11175 | |
0e1862bb | 11176 | if (!bfd_link_pic (info)) |
9d8504b1 | 11177 | { |
e87d4038 | 11178 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 11179 | |
e87d4038 | 11180 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 11181 | splt->contents + 0); |
e87d4038 | 11182 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
11183 | splt->contents + 4); |
11184 | } | |
11185 | else | |
11186 | { | |
11187 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
11188 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
11189 | } | |
11190 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
11191 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
11192 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
11193 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
11194 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
11195 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
11196 | ||
0e1862bb | 11197 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
11198 | { |
11199 | Elf_Internal_Rela rela; | |
11200 | bfd_byte *loc; | |
11201 | ||
11202 | loc = htab->srelplt2->contents; | |
11203 | ||
11204 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
11205 | rela.r_offset = (htab->elf.splt->output_section->vma |
11206 | + htab->elf.splt->output_offset | |
9d8504b1 | 11207 | + 2); |
636ce3f5 | 11208 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
11209 | rela.r_addend = 0; |
11210 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11211 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 11212 | |
9d8504b1 | 11213 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
11214 | rela.r_offset = (htab->elf.splt->output_section->vma |
11215 | + htab->elf.splt->output_offset | |
9d8504b1 | 11216 | + 6); |
636ce3f5 | 11217 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
11218 | rela.r_addend = 0; |
11219 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11220 | loc += sizeof (Elf32_External_Rela); | |
11221 | ||
11222 | /* Fix up the remaining relocations. They may have the wrong | |
11223 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
11224 | in which symbols were output. */ | |
11225 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
11226 | { | |
11227 | Elf_Internal_Rela rel; | |
11228 | ||
11229 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 11230 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
11231 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
11232 | loc += sizeof (Elf32_External_Rela); | |
11233 | ||
11234 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 11235 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
11236 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
11237 | loc += sizeof (Elf32_External_Rela); | |
11238 | ||
11239 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 11240 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
11241 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
11242 | loc += sizeof (Elf32_External_Rela); | |
11243 | } | |
11244 | } | |
11245 | } | |
11246 | ||
e054468f AM |
11247 | if (htab->glink != NULL |
11248 | && htab->glink->contents != NULL | |
11249 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
11250 | { |
11251 | unsigned char *p; | |
11252 | unsigned char *endp; | |
a6aa5195 | 11253 | bfd_vma res0; |
a6aa5195 AM |
11254 | |
11255 | /* | |
11256 | * PIC glink code is the following: | |
11257 | * | |
11258 | * # ith PLT code stub. | |
11259 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
11260 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
11261 | * mtctr 11 | |
11262 | * bctr | |
11263 | * | |
11264 | * # A table of branches, one for each plt entry. | |
176a0d42 | 11265 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
11266 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
11267 | * res_0: b PLTresolve | |
11268 | * res_1: b PLTresolve | |
11269 | * . | |
11270 | * # Some number of entries towards the end can be nops | |
11271 | * res_n_m3: nop | |
11272 | * res_n_m2: nop | |
11273 | * res_n_m1: | |
11274 | * | |
11275 | * PLTresolve: | |
11276 | * addis 11,11,(1f-res_0)@ha | |
11277 | * mflr 0 | |
11278 | * bcl 20,31,1f | |
11279 | * 1: addi 11,11,(1b-res_0)@l | |
11280 | * mflr 12 | |
11281 | * mtlr 0 | |
07d6d2b8 | 11282 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 11283 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
11284 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
11285 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
11286 | * mtctr 0 |
11287 | * add 0,11,11 | |
07d6d2b8 | 11288 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 | 11289 | * bctr |
9e390558 | 11290 | * |
176a0d42 AM |
11291 | * Non-PIC glink code is a little simpler. |
11292 | * | |
11293 | * # ith PLT code stub. | |
11294 | * lis 11,(plt+(i-1)*4)@ha | |
11295 | * lwz 11,(plt+(i-1)*4)@l(11) | |
11296 | * mtctr 11 | |
11297 | * bctr | |
11298 | * | |
11299 | * The branch table is the same, then comes | |
11300 | * | |
11301 | * PLTresolve: | |
11302 | * lis 12,(got+4)@ha | |
11303 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
11304 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
11305 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
11306 | * mtctr 0 |
11307 | * add 0,11,11 | |
07d6d2b8 AM |
11308 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
11309 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
11310 | * bctr |
11311 | */ | |
7e8aeb9a | 11312 | |
a6aa5195 | 11313 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 11314 | and perhaps some padding. */ |
a6aa5195 AM |
11315 | p = htab->glink->contents; |
11316 | p += htab->glink_pltresolve; | |
86b9da88 AM |
11317 | endp = htab->glink->contents; |
11318 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 11319 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
11320 | { |
11321 | bfd_put_32 (output_bfd, B + endp - p, p); | |
11322 | p += 4; | |
11323 | } | |
11324 | while (p < endp) | |
11325 | { | |
11326 | bfd_put_32 (output_bfd, NOP, p); | |
11327 | p += 4; | |
11328 | } | |
11329 | ||
7e8aeb9a | 11330 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
11331 | + htab->glink->output_section->vma |
11332 | + htab->glink->output_offset); | |
11333 | ||
da3a2088 AM |
11334 | if (htab->params->ppc476_workaround) |
11335 | { | |
11336 | /* Ensure that a call stub at the end of a page doesn't | |
11337 | result in prefetch over the end of the page into the | |
11338 | glink branch table. */ | |
11339 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
11340 | bfd_vma page_addr; | |
11341 | bfd_vma glink_start = (htab->glink->output_section->vma | |
11342 | + htab->glink->output_offset); | |
11343 | ||
11344 | for (page_addr = res0 & -pagesize; | |
11345 | page_addr > glink_start; | |
11346 | page_addr -= pagesize) | |
11347 | { | |
11348 | /* We have a plt call stub that may need fixing. */ | |
11349 | bfd_byte *loc; | |
11350 | unsigned int insn; | |
11351 | ||
11352 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
11353 | insn = bfd_get_32 (output_bfd, loc); | |
11354 | if (insn == BCTR) | |
11355 | { | |
11356 | /* By alignment, we know that there must be at least | |
11357 | one other call stub before this one. */ | |
11358 | insn = bfd_get_32 (output_bfd, loc - 16); | |
11359 | if (insn == BCTR) | |
11360 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
11361 | else | |
11362 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
11363 | } | |
11364 | } | |
11365 | } | |
11366 | ||
86b9da88 | 11367 | /* Last comes the PLTresolve stub. */ |
9e390558 | 11368 | endp = p + GLINK_PLTRESOLVE; |
0e1862bb | 11369 | if (bfd_link_pic (info)) |
7e8aeb9a | 11370 | { |
a6aa5195 | 11371 | bfd_vma bcl; |
d7128ce4 | 11372 | |
a6aa5195 AM |
11373 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 |
11374 | + htab->glink->output_section->vma | |
11375 | + htab->glink->output_offset); | |
11376 | ||
9e390558 AM |
11377 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p); |
11378 | p += 4; | |
11379 | bfd_put_32 (output_bfd, MFLR_0, p); | |
11380 | p += 4; | |
11381 | bfd_put_32 (output_bfd, BCL_20_31, p); | |
11382 | p += 4; | |
11383 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p); | |
11384 | p += 4; | |
11385 | bfd_put_32 (output_bfd, MFLR_12, p); | |
11386 | p += 4; | |
11387 | bfd_put_32 (output_bfd, MTLR_0, p); | |
11388 | p += 4; | |
11389 | bfd_put_32 (output_bfd, SUB_11_11_12, p); | |
11390 | p += 4; | |
11391 | bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p); | |
11392 | p += 4; | |
a6aa5195 AM |
11393 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) |
11394 | { | |
9e390558 AM |
11395 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p); |
11396 | p += 4; | |
11397 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p); | |
11398 | p += 4; | |
a6aa5195 AM |
11399 | } |
11400 | else | |
11401 | { | |
9e390558 AM |
11402 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p); |
11403 | p += 4; | |
11404 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
11405 | p += 4; | |
a6aa5195 | 11406 | } |
9e390558 AM |
11407 | bfd_put_32 (output_bfd, MTCTR_0, p); |
11408 | p += 4; | |
11409 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
7e8aeb9a AM |
11410 | } |
11411 | else | |
d7128ce4 | 11412 | { |
9e390558 AM |
11413 | bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p); |
11414 | p += 4; | |
11415 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p); | |
11416 | p += 4; | |
a6aa5195 | 11417 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) |
9e390558 | 11418 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p); |
a6aa5195 | 11419 | else |
9e390558 AM |
11420 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p); |
11421 | p += 4; | |
11422 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p); | |
11423 | p += 4; | |
11424 | bfd_put_32 (output_bfd, MTCTR_0, p); | |
11425 | p += 4; | |
11426 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
11427 | p += 4; | |
11428 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
11429 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p); | |
11430 | else | |
11431 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
11432 | } | |
11433 | p += 4; | |
11434 | bfd_put_32 (output_bfd, ADD_11_0_11, p); | |
11435 | p += 4; | |
407aa07c AM |
11436 | bfd_put_32 (output_bfd, BCTR, p); |
11437 | p += 4; | |
9e390558 AM |
11438 | while (p < endp) |
11439 | { | |
11440 | bfd_put_32 (output_bfd, | |
11441 | htab->params->ppc476_workaround ? BA : NOP, p); | |
11442 | p += 4; | |
d7128ce4 | 11443 | } |
9e390558 | 11444 | BFD_ASSERT (p == endp); |
d7128ce4 AM |
11445 | } |
11446 | ||
6177242a AM |
11447 | if (htab->glink_eh_frame != NULL |
11448 | && htab->glink_eh_frame->contents != NULL) | |
11449 | { | |
11450 | unsigned char *p = htab->glink_eh_frame->contents; | |
11451 | bfd_vma val; | |
11452 | ||
6177242a AM |
11453 | p += sizeof (glink_eh_frame_cie); |
11454 | /* FDE length. */ | |
6177242a AM |
11455 | p += 4; |
11456 | /* CIE pointer. */ | |
6177242a AM |
11457 | p += 4; |
11458 | /* Offset to .glink. */ | |
11459 | val = (htab->glink->output_section->vma | |
11460 | + htab->glink->output_offset); | |
11461 | val -= (htab->glink_eh_frame->output_section->vma | |
11462 | + htab->glink_eh_frame->output_offset); | |
11463 | val -= p - htab->glink_eh_frame->contents; | |
11464 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 11465 | |
dbaa2011 | 11466 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
11467 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
11468 | htab->glink_eh_frame, | |
11469 | htab->glink_eh_frame->contents)) | |
11470 | return FALSE; | |
11471 | } | |
11472 | ||
e87d4038 | 11473 | return ret; |
25dbc73a | 11474 | } |
e1a9cb8e | 11475 | \f |
6d00b590 | 11476 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 11477 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 11478 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
11479 | #define TARGET_BIG_NAME "elf32-powerpc" |
11480 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 11481 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 RH |
11482 | #define ELF_MACHINE_CODE EM_PPC |
11483 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
11484 | #define ELF_COMMONPAGESIZE 0x1000 |
11485 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
252b5132 RH |
11486 | #define elf_info_to_howto ppc_elf_info_to_howto |
11487 | ||
11488 | #ifdef EM_CYGNUS_POWERPC | |
11489 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
11490 | #endif | |
11491 | ||
11492 | #ifdef EM_PPC_OLD | |
11493 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
11494 | #endif | |
11495 | ||
11496 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 11497 | #define elf_backend_want_dynrelro 1 |
252b5132 | 11498 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 11499 | #define elf_backend_can_refcount 1 |
b491616a | 11500 | #define elf_backend_rela_normal 1 |
53291d1f | 11501 | #define elf_backend_caches_rawsize 1 |
252b5132 | 11502 | |
43c40ab2 | 11503 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 11504 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 11505 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 11506 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 11507 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 11508 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 11509 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 11510 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 11511 | |
feee612b | 11512 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 11513 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
11514 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
11515 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
11516 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
11517 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 11518 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 11519 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
11520 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
11521 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
11522 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 11523 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
11524 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
11525 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
11526 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
11527 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 11528 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
11529 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
11530 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 11531 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 11532 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
11533 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
11534 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
11535 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 11536 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 11537 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 11538 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 11539 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 11540 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
11541 | |
11542 | #include "elf32-target.h" | |
9d8504b1 | 11543 | |
7b8e7dad AM |
11544 | /* FreeBSD Target */ |
11545 | ||
11546 | #undef TARGET_LITTLE_SYM | |
11547 | #undef TARGET_LITTLE_NAME | |
11548 | ||
11549 | #undef TARGET_BIG_SYM | |
6d00b590 | 11550 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
11551 | #undef TARGET_BIG_NAME |
11552 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
11553 | ||
11554 | #undef ELF_OSABI | |
11555 | #define ELF_OSABI ELFOSABI_FREEBSD | |
11556 | ||
11557 | #undef elf32_bed | |
11558 | #define elf32_bed elf32_powerpc_fbsd_bed | |
11559 | ||
11560 | #include "elf32-target.h" | |
11561 | ||
9d8504b1 PB |
11562 | /* VxWorks Target */ |
11563 | ||
11564 | #undef TARGET_LITTLE_SYM | |
11565 | #undef TARGET_LITTLE_NAME | |
11566 | ||
11567 | #undef TARGET_BIG_SYM | |
6d00b590 | 11568 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
11569 | #undef TARGET_BIG_NAME |
11570 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
11571 | ||
7b8e7dad AM |
11572 | #undef ELF_OSABI |
11573 | ||
d5e3d971 PB |
11574 | /* VxWorks uses the elf default section flags for .plt. */ |
11575 | static const struct bfd_elf_special_section * | |
4aef7643 | 11576 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 11577 | { |
d5e3d971 PB |
11578 | if (sec->name == NULL) |
11579 | return NULL; | |
11580 | ||
11581 | if (strcmp (sec->name, ".plt") == 0) | |
11582 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
11583 | ||
11584 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
11585 | } | |
9d8504b1 PB |
11586 | |
11587 | /* Like ppc_elf_link_hash_table_create, but overrides | |
11588 | appropriately for VxWorks. */ | |
11589 | static struct bfd_link_hash_table * | |
11590 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
11591 | { | |
11592 | struct bfd_link_hash_table *ret; | |
11593 | ||
11594 | ret = ppc_elf_link_hash_table_create (abfd); | |
11595 | if (ret) | |
11596 | { | |
11597 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 11598 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 11599 | htab->is_vxworks = 1; |
4a3dc543 | 11600 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
11601 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
11602 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
11603 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
11604 | } | |
11605 | return ret; | |
11606 | } | |
11607 | ||
11608 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
11609 | static bfd_boolean | |
11610 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
11611 | struct bfd_link_info *info, | |
11612 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
11613 | const char **namep, |
11614 | flagword *flagsp, | |
9d8504b1 PB |
11615 | asection **secp, |
11616 | bfd_vma *valp) | |
11617 | { | |
4aef7643 AM |
11618 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
11619 | valp)) | |
9d8504b1 PB |
11620 | return FALSE; |
11621 | ||
4aef7643 | 11622 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
11623 | } |
11624 | ||
9d8504b1 PB |
11625 | static void |
11626 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
11627 | { | |
4aef7643 AM |
11628 | ppc_elf_final_write_processing (abfd, linker); |
11629 | elf_vxworks_final_write_processing (abfd, linker); | |
9d8504b1 PB |
11630 | } |
11631 | ||
11632 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
11633 | define it. */ | |
11634 | #undef elf_backend_want_plt_sym | |
11635 | #define elf_backend_want_plt_sym 1 | |
11636 | #undef elf_backend_want_got_plt | |
11637 | #define elf_backend_want_got_plt 1 | |
11638 | #undef elf_backend_got_symbol_offset | |
11639 | #define elf_backend_got_symbol_offset 0 | |
11640 | #undef elf_backend_plt_not_loaded | |
11641 | #define elf_backend_plt_not_loaded 0 | |
11642 | #undef elf_backend_plt_readonly | |
11643 | #define elf_backend_plt_readonly 1 | |
11644 | #undef elf_backend_got_header_size | |
11645 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
11646 | #undef elf_backend_dtrel_excludes_plt |
11647 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 11648 | |
468392fb AM |
11649 | #undef bfd_elf32_get_synthetic_symtab |
11650 | ||
9d8504b1 PB |
11651 | #undef bfd_elf32_bfd_link_hash_table_create |
11652 | #define bfd_elf32_bfd_link_hash_table_create \ | |
11653 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
11654 | #undef elf_backend_add_symbol_hook |
11655 | #define elf_backend_add_symbol_hook \ | |
11656 | ppc_elf_vxworks_add_symbol_hook | |
11657 | #undef elf_backend_link_output_symbol_hook | |
11658 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 11659 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
11660 | #undef elf_backend_final_write_processing |
11661 | #define elf_backend_final_write_processing \ | |
11662 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
11663 | #undef elf_backend_get_sec_type_attr |
11664 | #define elf_backend_get_sec_type_attr \ | |
11665 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
11666 | #undef elf_backend_emit_relocs |
11667 | #define elf_backend_emit_relocs \ | |
11668 | elf_vxworks_emit_relocs | |
11669 | ||
11670 | #undef elf32_bed | |
11671 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 11672 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
11673 | |
11674 | #include "elf32-target.h" |