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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
6f2750fe | 2 | Copyright (C) 1994-2016 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" |
252b5132 | 38 | |
b9c361e0 JL |
39 | typedef enum split16_format_type |
40 | { | |
41 | split16a_type = 0, | |
42 | split16d_type | |
43 | } | |
44 | split16_format_type; | |
45 | ||
f0fe0e16 | 46 | /* RELA relocations are used here. */ |
252b5132 | 47 | |
252b5132 | 48 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 50 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 52 | |
70bccea4 AM |
53 | /* Branch prediction bit for branch taken relocs. */ |
54 | #define BRANCH_PREDICT_BIT 0x200000 | |
55 | /* Mask to set RA in memory instructions. */ | |
56 | #define RA_REGISTER_MASK 0x001f0000 | |
57 | /* Value to shift register by to insert RA. */ | |
58 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
59 | |
60 | /* The name of the dynamic interpreter. This is put in the .interp | |
61 | section. */ | |
252b5132 RH |
62 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
63 | ||
d7128ce4 | 64 | /* For old-style PLT. */ |
252b5132 RH |
65 | /* The number of single-slot PLT entries (the rest use two slots). */ |
66 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
67 | ||
d7128ce4 | 68 | /* For new-style .glink and .plt. */ |
a6aa5195 | 69 | #define GLINK_PLTRESOLVE 16*4 |
d7128ce4 | 70 | #define GLINK_ENTRY_SIZE 4*4 |
a7f2871e | 71 | #define TLS_GET_ADDR_GLINK_SIZE 12*4 |
d7128ce4 | 72 | |
9d8504b1 PB |
73 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
74 | ||
75 | /* The standard VxWorks PLT entry. */ | |
76 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
77 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
78 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
79 | { | |
80 | 0x3d800000, /* lis r12,0 */ | |
81 | 0x818c0000, /* lwz r12,0(r12) */ | |
82 | 0x7d8903a6, /* mtctr r12 */ | |
83 | 0x4e800420, /* bctr */ | |
84 | 0x39600000, /* li r11,0 */ | |
85 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
86 | 0x60000000, /* nop */ | |
87 | 0x60000000, /* nop */ | |
88 | }; | |
89 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
90 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
91 | { | |
92 | 0x3d9e0000, /* addis r12,r30,0 */ | |
93 | 0x818c0000, /* lwz r12,0(r12) */ | |
94 | 0x7d8903a6, /* mtctr r12 */ | |
95 | 0x4e800420, /* bctr */ | |
96 | 0x39600000, /* li r11,0 */ | |
97 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
98 | 0x60000000, /* nop */ | |
99 | 0x60000000, /* nop */ | |
100 | }; | |
101 | ||
102 | /* The initial VxWorks PLT entry. */ | |
103 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
104 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
105 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
106 | { | |
107 | 0x3d800000, /* lis r12,0 */ | |
108 | 0x398c0000, /* addi r12,r12,0 */ | |
109 | 0x800c0008, /* lwz r0,8(r12) */ | |
110 | 0x7c0903a6, /* mtctr r0 */ | |
111 | 0x818c0004, /* lwz r12,4(r12) */ | |
112 | 0x4e800420, /* bctr */ | |
113 | 0x60000000, /* nop */ | |
114 | 0x60000000, /* nop */ | |
115 | }; | |
116 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
117 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
118 | { | |
119 | 0x819e0008, /* lwz r12,8(r30) */ | |
120 | 0x7d8903a6, /* mtctr r12 */ | |
121 | 0x819e0004, /* lwz r12,4(r30) */ | |
122 | 0x4e800420, /* bctr */ | |
123 | 0x60000000, /* nop */ | |
124 | 0x60000000, /* nop */ | |
125 | 0x60000000, /* nop */ | |
126 | 0x60000000, /* nop */ | |
127 | }; | |
128 | ||
129 | /* For executables, we have some additional relocations in | |
130 | .rela.plt.unloaded, for the kernel loader. */ | |
131 | ||
132 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
133 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
134 | /* The number of relocations in the PLTResolve slot. */ | |
135 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
136 | /* The number of relocations in the PLTResolve slot when when creating | |
137 | a shared library. */ | |
138 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
139 | ||
d7128ce4 | 140 | /* Some instructions. */ |
d7128ce4 | 141 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
142 | #define ADDIS_11_30 0x3d7e0000 |
143 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 144 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 145 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 146 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 147 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 148 | #define B 0x48000000 |
da3a2088 | 149 | #define BA 0x48000002 |
a6aa5195 | 150 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 151 | #define BCTR 0x4e800420 |
a7f2871e AM |
152 | #define BEQLR 0x4d820020 |
153 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
154 | #define LIS_11 0x3d600000 |
155 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
156 | #define LWZU_0_12 0x840c0000 |
157 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 158 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
159 | #define LWZ_11_11 0x816b0000 |
160 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 161 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 162 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
163 | #define MR_0_3 0x7c601b78 |
164 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
165 | #define MFLR_0 0x7c0802a6 |
166 | #define MFLR_12 0x7d8802a6 | |
167 | #define MTCTR_0 0x7c0903a6 | |
168 | #define MTCTR_11 0x7d6903a6 | |
169 | #define MTLR_0 0x7c0803a6 | |
170 | #define NOP 0x60000000 | |
171 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
172 | |
173 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
174 | #define TP_OFFSET 0x7000 | |
175 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
176 | |
177 | /* The value of a defined global symbol. */ | |
178 | #define SYM_VAL(SYM) \ | |
179 | ((SYM)->root.u.def.section->output_section->vma \ | |
180 | + (SYM)->root.u.def.section->output_offset \ | |
181 | + (SYM)->root.u.def.value) | |
7fce784e | 182 | \f |
e47cd125 | 183 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 184 | |
8da6118f | 185 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
186 | /* This reloc does nothing. */ |
187 | HOWTO (R_PPC_NONE, /* type */ | |
188 | 0, /* rightshift */ | |
6346d5ca AM |
189 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
190 | 0, /* bitsize */ | |
b34976b6 | 191 | FALSE, /* pc_relative */ |
252b5132 | 192 | 0, /* bitpos */ |
86c95733 | 193 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
194 | bfd_elf_generic_reloc, /* special_function */ |
195 | "R_PPC_NONE", /* name */ | |
b34976b6 | 196 | FALSE, /* partial_inplace */ |
252b5132 RH |
197 | 0, /* src_mask */ |
198 | 0, /* dst_mask */ | |
b34976b6 | 199 | FALSE), /* pcrel_offset */ |
252b5132 RH |
200 | |
201 | /* A standard 32 bit relocation. */ | |
202 | HOWTO (R_PPC_ADDR32, /* type */ | |
203 | 0, /* rightshift */ | |
204 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
205 | 32, /* bitsize */ | |
b34976b6 | 206 | FALSE, /* pc_relative */ |
252b5132 | 207 | 0, /* bitpos */ |
86c95733 | 208 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
209 | bfd_elf_generic_reloc, /* special_function */ |
210 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 211 | FALSE, /* partial_inplace */ |
252b5132 RH |
212 | 0, /* src_mask */ |
213 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 214 | FALSE), /* pcrel_offset */ |
252b5132 RH |
215 | |
216 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
217 | FIXME: we don't check that, we just clear them. */ | |
218 | HOWTO (R_PPC_ADDR24, /* type */ | |
219 | 0, /* rightshift */ | |
220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
221 | 26, /* bitsize */ | |
b34976b6 | 222 | FALSE, /* pc_relative */ |
252b5132 | 223 | 0, /* bitpos */ |
86c95733 | 224 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
225 | bfd_elf_generic_reloc, /* special_function */ |
226 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 227 | FALSE, /* partial_inplace */ |
252b5132 RH |
228 | 0, /* src_mask */ |
229 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 230 | FALSE), /* pcrel_offset */ |
252b5132 RH |
231 | |
232 | /* A standard 16 bit relocation. */ | |
233 | HOWTO (R_PPC_ADDR16, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 16, /* bitsize */ | |
b34976b6 | 237 | FALSE, /* pc_relative */ |
252b5132 RH |
238 | 0, /* bitpos */ |
239 | complain_overflow_bitfield, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 242 | FALSE, /* partial_inplace */ |
252b5132 RH |
243 | 0, /* src_mask */ |
244 | 0xffff, /* dst_mask */ | |
b34976b6 | 245 | FALSE), /* pcrel_offset */ |
252b5132 RH |
246 | |
247 | /* A 16 bit relocation without overflow. */ | |
248 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
249 | 0, /* rightshift */ | |
250 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 16, /* bitsize */ | |
b34976b6 | 252 | FALSE, /* pc_relative */ |
252b5132 RH |
253 | 0, /* bitpos */ |
254 | complain_overflow_dont,/* complain_on_overflow */ | |
255 | bfd_elf_generic_reloc, /* special_function */ | |
256 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 257 | FALSE, /* partial_inplace */ |
252b5132 RH |
258 | 0, /* src_mask */ |
259 | 0xffff, /* dst_mask */ | |
b34976b6 | 260 | FALSE), /* pcrel_offset */ |
252b5132 RH |
261 | |
262 | /* The high order 16 bits of an address. */ | |
263 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
264 | 16, /* rightshift */ | |
265 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 16, /* bitsize */ | |
b34976b6 | 267 | FALSE, /* pc_relative */ |
252b5132 RH |
268 | 0, /* bitpos */ |
269 | complain_overflow_dont, /* complain_on_overflow */ | |
270 | bfd_elf_generic_reloc, /* special_function */ | |
271 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 272 | FALSE, /* partial_inplace */ |
252b5132 RH |
273 | 0, /* src_mask */ |
274 | 0xffff, /* dst_mask */ | |
b34976b6 | 275 | FALSE), /* pcrel_offset */ |
252b5132 RH |
276 | |
277 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 278 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
279 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
280 | 16, /* rightshift */ | |
281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
282 | 16, /* bitsize */ | |
b34976b6 | 283 | FALSE, /* pc_relative */ |
252b5132 RH |
284 | 0, /* bitpos */ |
285 | complain_overflow_dont, /* complain_on_overflow */ | |
286 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
287 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 288 | FALSE, /* partial_inplace */ |
252b5132 RH |
289 | 0, /* src_mask */ |
290 | 0xffff, /* dst_mask */ | |
b34976b6 | 291 | FALSE), /* pcrel_offset */ |
252b5132 RH |
292 | |
293 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
294 | FIXME: we don't check that, we just clear them. */ | |
295 | HOWTO (R_PPC_ADDR14, /* type */ | |
296 | 0, /* rightshift */ | |
297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
298 | 16, /* bitsize */ | |
b34976b6 | 299 | FALSE, /* pc_relative */ |
252b5132 | 300 | 0, /* bitpos */ |
86c95733 | 301 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
302 | bfd_elf_generic_reloc, /* special_function */ |
303 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 304 | FALSE, /* partial_inplace */ |
252b5132 RH |
305 | 0, /* src_mask */ |
306 | 0xfffc, /* dst_mask */ | |
b34976b6 | 307 | FALSE), /* pcrel_offset */ |
252b5132 RH |
308 | |
309 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
310 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 311 | bits must be zero. */ |
252b5132 RH |
312 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
313 | 0, /* rightshift */ | |
314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
315 | 16, /* bitsize */ | |
b34976b6 | 316 | FALSE, /* pc_relative */ |
252b5132 | 317 | 0, /* bitpos */ |
86c95733 | 318 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
319 | bfd_elf_generic_reloc, /* special_function */ |
320 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 321 | FALSE, /* partial_inplace */ |
252b5132 RH |
322 | 0, /* src_mask */ |
323 | 0xfffc, /* dst_mask */ | |
b34976b6 | 324 | FALSE), /* pcrel_offset */ |
252b5132 RH |
325 | |
326 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
327 | indicate that the branch is not expected to be taken. The lower | |
328 | two bits must be zero. */ | |
329 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
330 | 0, /* rightshift */ | |
331 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
332 | 16, /* bitsize */ | |
b34976b6 | 333 | FALSE, /* pc_relative */ |
252b5132 | 334 | 0, /* bitpos */ |
86c95733 | 335 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
336 | bfd_elf_generic_reloc, /* special_function */ |
337 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 338 | FALSE, /* partial_inplace */ |
252b5132 RH |
339 | 0, /* src_mask */ |
340 | 0xfffc, /* dst_mask */ | |
b34976b6 | 341 | FALSE), /* pcrel_offset */ |
252b5132 | 342 | |
8da6118f | 343 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
344 | HOWTO (R_PPC_REL24, /* type */ |
345 | 0, /* rightshift */ | |
346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
347 | 26, /* bitsize */ | |
b34976b6 | 348 | TRUE, /* pc_relative */ |
252b5132 RH |
349 | 0, /* bitpos */ |
350 | complain_overflow_signed, /* complain_on_overflow */ | |
351 | bfd_elf_generic_reloc, /* special_function */ | |
352 | "R_PPC_REL24", /* name */ | |
b34976b6 | 353 | FALSE, /* partial_inplace */ |
252b5132 RH |
354 | 0, /* src_mask */ |
355 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 356 | TRUE), /* pcrel_offset */ |
252b5132 | 357 | |
8da6118f | 358 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
359 | HOWTO (R_PPC_REL14, /* type */ |
360 | 0, /* rightshift */ | |
361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
362 | 16, /* bitsize */ | |
b34976b6 | 363 | TRUE, /* pc_relative */ |
252b5132 RH |
364 | 0, /* bitpos */ |
365 | complain_overflow_signed, /* complain_on_overflow */ | |
366 | bfd_elf_generic_reloc, /* special_function */ | |
367 | "R_PPC_REL14", /* name */ | |
b34976b6 | 368 | FALSE, /* partial_inplace */ |
252b5132 RH |
369 | 0, /* src_mask */ |
370 | 0xfffc, /* dst_mask */ | |
b34976b6 | 371 | TRUE), /* pcrel_offset */ |
252b5132 | 372 | |
8da6118f | 373 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
374 | the branch is expected to be taken. The lower two bits must be |
375 | zero. */ | |
376 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
377 | 0, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 16, /* bitsize */ | |
b34976b6 | 380 | TRUE, /* pc_relative */ |
252b5132 RH |
381 | 0, /* bitpos */ |
382 | complain_overflow_signed, /* complain_on_overflow */ | |
383 | bfd_elf_generic_reloc, /* special_function */ | |
384 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 385 | FALSE, /* partial_inplace */ |
252b5132 RH |
386 | 0, /* src_mask */ |
387 | 0xfffc, /* dst_mask */ | |
b34976b6 | 388 | TRUE), /* pcrel_offset */ |
252b5132 | 389 | |
8da6118f | 390 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
391 | the branch is not expected to be taken. The lower two bits must |
392 | be zero. */ | |
393 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
394 | 0, /* rightshift */ | |
395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
396 | 16, /* bitsize */ | |
b34976b6 | 397 | TRUE, /* pc_relative */ |
252b5132 RH |
398 | 0, /* bitpos */ |
399 | complain_overflow_signed, /* complain_on_overflow */ | |
400 | bfd_elf_generic_reloc, /* special_function */ | |
401 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 402 | FALSE, /* partial_inplace */ |
252b5132 RH |
403 | 0, /* src_mask */ |
404 | 0xfffc, /* dst_mask */ | |
b34976b6 | 405 | TRUE), /* pcrel_offset */ |
252b5132 RH |
406 | |
407 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
408 | symbol. */ | |
409 | HOWTO (R_PPC_GOT16, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 16, /* bitsize */ | |
b34976b6 | 413 | FALSE, /* pc_relative */ |
252b5132 RH |
414 | 0, /* bitpos */ |
415 | complain_overflow_signed, /* complain_on_overflow */ | |
416 | bfd_elf_generic_reloc, /* special_function */ | |
417 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 418 | FALSE, /* partial_inplace */ |
252b5132 RH |
419 | 0, /* src_mask */ |
420 | 0xffff, /* dst_mask */ | |
b34976b6 | 421 | FALSE), /* pcrel_offset */ |
252b5132 RH |
422 | |
423 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
424 | the symbol. */ | |
425 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
426 | 0, /* rightshift */ | |
427 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
428 | 16, /* bitsize */ | |
b34976b6 | 429 | FALSE, /* pc_relative */ |
252b5132 RH |
430 | 0, /* bitpos */ |
431 | complain_overflow_dont, /* complain_on_overflow */ | |
432 | bfd_elf_generic_reloc, /* special_function */ | |
433 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 434 | FALSE, /* partial_inplace */ |
252b5132 RH |
435 | 0, /* src_mask */ |
436 | 0xffff, /* dst_mask */ | |
b34976b6 | 437 | FALSE), /* pcrel_offset */ |
252b5132 RH |
438 | |
439 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
440 | the symbol. */ | |
441 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
442 | 16, /* rightshift */ | |
443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 16, /* bitsize */ | |
b34976b6 | 445 | FALSE, /* pc_relative */ |
252b5132 | 446 | 0, /* bitpos */ |
86c95733 | 447 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
448 | bfd_elf_generic_reloc, /* special_function */ |
449 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 450 | FALSE, /* partial_inplace */ |
252b5132 RH |
451 | 0, /* src_mask */ |
452 | 0xffff, /* dst_mask */ | |
b34976b6 | 453 | FALSE), /* pcrel_offset */ |
252b5132 RH |
454 | |
455 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
456 | the symbol. */ | |
457 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
458 | 16, /* rightshift */ | |
459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 16, /* bitsize */ | |
b34976b6 | 461 | FALSE, /* pc_relative */ |
252b5132 | 462 | 0, /* bitpos */ |
86c95733 | 463 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
464 | ppc_elf_addr16_ha_reloc, /* special_function */ |
465 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 466 | FALSE, /* partial_inplace */ |
252b5132 RH |
467 | 0, /* src_mask */ |
468 | 0xffff, /* dst_mask */ | |
b34976b6 | 469 | FALSE), /* pcrel_offset */ |
252b5132 RH |
470 | |
471 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
472 | entry for the symbol. */ | |
473 | HOWTO (R_PPC_PLTREL24, /* type */ | |
474 | 0, /* rightshift */ | |
475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 26, /* bitsize */ | |
b34976b6 | 477 | TRUE, /* pc_relative */ |
252b5132 RH |
478 | 0, /* bitpos */ |
479 | complain_overflow_signed, /* complain_on_overflow */ | |
480 | bfd_elf_generic_reloc, /* special_function */ | |
481 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 482 | FALSE, /* partial_inplace */ |
252b5132 RH |
483 | 0, /* src_mask */ |
484 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 485 | TRUE), /* pcrel_offset */ |
252b5132 RH |
486 | |
487 | /* This is used only by the dynamic linker. The symbol should exist | |
488 | both in the object being run and in some shared library. The | |
489 | dynamic linker copies the data addressed by the symbol from the | |
490 | shared library into the object, because the object being | |
491 | run has to have the data at some particular address. */ | |
492 | HOWTO (R_PPC_COPY, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 32, /* bitsize */ | |
b34976b6 | 496 | FALSE, /* pc_relative */ |
252b5132 | 497 | 0, /* bitpos */ |
86c95733 | 498 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
499 | bfd_elf_generic_reloc, /* special_function */ |
500 | "R_PPC_COPY", /* name */ | |
b34976b6 | 501 | FALSE, /* partial_inplace */ |
252b5132 RH |
502 | 0, /* src_mask */ |
503 | 0, /* dst_mask */ | |
b34976b6 | 504 | FALSE), /* pcrel_offset */ |
252b5132 RH |
505 | |
506 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
507 | entries. */ | |
508 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
509 | 0, /* rightshift */ | |
510 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
511 | 32, /* bitsize */ | |
b34976b6 | 512 | FALSE, /* pc_relative */ |
252b5132 | 513 | 0, /* bitpos */ |
86c95733 | 514 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
515 | bfd_elf_generic_reloc, /* special_function */ |
516 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 517 | FALSE, /* partial_inplace */ |
252b5132 RH |
518 | 0, /* src_mask */ |
519 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 520 | FALSE), /* pcrel_offset */ |
252b5132 RH |
521 | |
522 | /* Marks a procedure linkage table entry for a symbol. */ | |
523 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 32, /* bitsize */ | |
b34976b6 | 527 | FALSE, /* pc_relative */ |
252b5132 | 528 | 0, /* bitpos */ |
86c95733 | 529 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
530 | bfd_elf_generic_reloc, /* special_function */ |
531 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 532 | FALSE, /* partial_inplace */ |
252b5132 RH |
533 | 0, /* src_mask */ |
534 | 0, /* dst_mask */ | |
b34976b6 | 535 | FALSE), /* pcrel_offset */ |
252b5132 RH |
536 | |
537 | /* Used only by the dynamic linker. When the object is run, this | |
538 | longword is set to the load address of the object, plus the | |
539 | addend. */ | |
540 | HOWTO (R_PPC_RELATIVE, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 32, /* bitsize */ | |
b34976b6 | 544 | FALSE, /* pc_relative */ |
252b5132 | 545 | 0, /* bitpos */ |
86c95733 | 546 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
547 | bfd_elf_generic_reloc, /* special_function */ |
548 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
252b5132 RH |
550 | 0, /* src_mask */ |
551 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
252b5132 RH |
553 | |
554 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
555 | object rather than the final value. Normally used for | |
556 | _GLOBAL_OFFSET_TABLE_. */ | |
557 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
560 | 26, /* bitsize */ | |
b34976b6 | 561 | TRUE, /* pc_relative */ |
252b5132 RH |
562 | 0, /* bitpos */ |
563 | complain_overflow_signed, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
565 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 566 | FALSE, /* partial_inplace */ |
252b5132 RH |
567 | 0, /* src_mask */ |
568 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 569 | TRUE), /* pcrel_offset */ |
252b5132 RH |
570 | |
571 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
572 | HOWTO (R_PPC_UADDR32, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 32, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
252b5132 | 577 | 0, /* bitpos */ |
86c95733 | 578 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
579 | bfd_elf_generic_reloc, /* special_function */ |
580 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
252b5132 RH |
582 | 0, /* src_mask */ |
583 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
252b5132 RH |
585 | |
586 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
587 | HOWTO (R_PPC_UADDR16, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
b34976b6 | 591 | FALSE, /* pc_relative */ |
252b5132 RH |
592 | 0, /* bitpos */ |
593 | complain_overflow_bitfield, /* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
595 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 596 | FALSE, /* partial_inplace */ |
252b5132 RH |
597 | 0, /* src_mask */ |
598 | 0xffff, /* dst_mask */ | |
b34976b6 | 599 | FALSE), /* pcrel_offset */ |
252b5132 RH |
600 | |
601 | /* 32-bit PC relative */ | |
602 | HOWTO (R_PPC_REL32, /* type */ | |
603 | 0, /* rightshift */ | |
604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
605 | 32, /* bitsize */ | |
b34976b6 | 606 | TRUE, /* pc_relative */ |
252b5132 | 607 | 0, /* bitpos */ |
86c95733 | 608 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
609 | bfd_elf_generic_reloc, /* special_function */ |
610 | "R_PPC_REL32", /* name */ | |
b34976b6 | 611 | FALSE, /* partial_inplace */ |
252b5132 RH |
612 | 0, /* src_mask */ |
613 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 614 | TRUE), /* pcrel_offset */ |
252b5132 RH |
615 | |
616 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 617 | FIXME: not supported. */ |
252b5132 RH |
618 | HOWTO (R_PPC_PLT32, /* type */ |
619 | 0, /* rightshift */ | |
620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 32, /* bitsize */ | |
b34976b6 | 622 | FALSE, /* pc_relative */ |
252b5132 | 623 | 0, /* bitpos */ |
86c95733 | 624 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
625 | bfd_elf_generic_reloc, /* special_function */ |
626 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 627 | FALSE, /* partial_inplace */ |
252b5132 RH |
628 | 0, /* src_mask */ |
629 | 0, /* dst_mask */ | |
b34976b6 | 630 | FALSE), /* pcrel_offset */ |
252b5132 RH |
631 | |
632 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 633 | FIXME: not supported. */ |
252b5132 RH |
634 | HOWTO (R_PPC_PLTREL32, /* type */ |
635 | 0, /* rightshift */ | |
636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
637 | 32, /* bitsize */ | |
b34976b6 | 638 | TRUE, /* pc_relative */ |
252b5132 | 639 | 0, /* bitpos */ |
86c95733 | 640 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
641 | bfd_elf_generic_reloc, /* special_function */ |
642 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 643 | FALSE, /* partial_inplace */ |
252b5132 RH |
644 | 0, /* src_mask */ |
645 | 0, /* dst_mask */ | |
b34976b6 | 646 | TRUE), /* pcrel_offset */ |
252b5132 RH |
647 | |
648 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
649 | the symbol. */ | |
650 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 16, /* bitsize */ | |
b34976b6 | 654 | FALSE, /* pc_relative */ |
252b5132 RH |
655 | 0, /* bitpos */ |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
658 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 659 | FALSE, /* partial_inplace */ |
252b5132 RH |
660 | 0, /* src_mask */ |
661 | 0xffff, /* dst_mask */ | |
b34976b6 | 662 | FALSE), /* pcrel_offset */ |
252b5132 RH |
663 | |
664 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
665 | the symbol. */ | |
666 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
667 | 16, /* rightshift */ | |
668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 16, /* bitsize */ | |
b34976b6 | 670 | FALSE, /* pc_relative */ |
252b5132 | 671 | 0, /* bitpos */ |
86c95733 | 672 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
673 | bfd_elf_generic_reloc, /* special_function */ |
674 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 675 | FALSE, /* partial_inplace */ |
252b5132 RH |
676 | 0, /* src_mask */ |
677 | 0xffff, /* dst_mask */ | |
b34976b6 | 678 | FALSE), /* pcrel_offset */ |
252b5132 RH |
679 | |
680 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
681 | the symbol. */ | |
682 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
683 | 16, /* rightshift */ | |
684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
685 | 16, /* bitsize */ | |
b34976b6 | 686 | FALSE, /* pc_relative */ |
252b5132 | 687 | 0, /* bitpos */ |
86c95733 | 688 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
689 | ppc_elf_addr16_ha_reloc, /* special_function */ |
690 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
252b5132 RH |
692 | 0, /* src_mask */ |
693 | 0xffff, /* dst_mask */ | |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
252b5132 RH |
695 | |
696 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
697 | small data items. */ | |
698 | HOWTO (R_PPC_SDAREL16, /* type */ | |
699 | 0, /* rightshift */ | |
700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
701 | 16, /* bitsize */ | |
b34976b6 | 702 | FALSE, /* pc_relative */ |
252b5132 RH |
703 | 0, /* bitpos */ |
704 | complain_overflow_signed, /* complain_on_overflow */ | |
705 | bfd_elf_generic_reloc, /* special_function */ | |
706 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
252b5132 RH |
708 | 0, /* src_mask */ |
709 | 0xffff, /* dst_mask */ | |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
252b5132 | 711 | |
c061c2d8 | 712 | /* 16-bit section relative relocation. */ |
252b5132 RH |
713 | HOWTO (R_PPC_SECTOFF, /* type */ |
714 | 0, /* rightshift */ | |
c061c2d8 AM |
715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
716 | 16, /* bitsize */ | |
b34976b6 | 717 | FALSE, /* pc_relative */ |
252b5132 | 718 | 0, /* bitpos */ |
86c95733 | 719 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
720 | bfd_elf_generic_reloc, /* special_function */ |
721 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 722 | FALSE, /* partial_inplace */ |
252b5132 | 723 | 0, /* src_mask */ |
c061c2d8 | 724 | 0xffff, /* dst_mask */ |
b34976b6 | 725 | FALSE), /* pcrel_offset */ |
252b5132 | 726 | |
c3668558 | 727 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
728 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
729 | 0, /* rightshift */ | |
730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 16, /* bitsize */ | |
b34976b6 | 732 | FALSE, /* pc_relative */ |
252b5132 RH |
733 | 0, /* bitpos */ |
734 | complain_overflow_dont, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
736 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 737 | FALSE, /* partial_inplace */ |
252b5132 RH |
738 | 0, /* src_mask */ |
739 | 0xffff, /* dst_mask */ | |
b34976b6 | 740 | FALSE), /* pcrel_offset */ |
252b5132 | 741 | |
c3668558 | 742 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
743 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
744 | 16, /* rightshift */ | |
745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 16, /* bitsize */ | |
b34976b6 | 747 | FALSE, /* pc_relative */ |
252b5132 | 748 | 0, /* bitpos */ |
86c95733 | 749 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
750 | bfd_elf_generic_reloc, /* special_function */ |
751 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 752 | FALSE, /* partial_inplace */ |
252b5132 RH |
753 | 0, /* src_mask */ |
754 | 0xffff, /* dst_mask */ | |
b34976b6 | 755 | FALSE), /* pcrel_offset */ |
252b5132 | 756 | |
c3668558 | 757 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
758 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
759 | 16, /* rightshift */ | |
760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 16, /* bitsize */ | |
b34976b6 | 762 | FALSE, /* pc_relative */ |
252b5132 | 763 | 0, /* bitpos */ |
86c95733 | 764 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
765 | ppc_elf_addr16_ha_reloc, /* special_function */ |
766 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 767 | FALSE, /* partial_inplace */ |
252b5132 RH |
768 | 0, /* src_mask */ |
769 | 0xffff, /* dst_mask */ | |
b34976b6 | 770 | FALSE), /* pcrel_offset */ |
252b5132 | 771 | |
727fc41e | 772 | /* Marker relocs for TLS. */ |
7619e7c7 | 773 | HOWTO (R_PPC_TLS, |
252b5132 RH |
774 | 0, /* rightshift */ |
775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
776 | 32, /* bitsize */ | |
b34976b6 | 777 | FALSE, /* pc_relative */ |
252b5132 | 778 | 0, /* bitpos */ |
7619e7c7 | 779 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 780 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
781 | "R_PPC_TLS", /* name */ |
782 | FALSE, /* partial_inplace */ | |
783 | 0, /* src_mask */ | |
784 | 0, /* dst_mask */ | |
785 | FALSE), /* pcrel_offset */ | |
786 | ||
727fc41e AM |
787 | HOWTO (R_PPC_TLSGD, |
788 | 0, /* rightshift */ | |
789 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
790 | 32, /* bitsize */ | |
791 | FALSE, /* pc_relative */ | |
792 | 0, /* bitpos */ | |
793 | complain_overflow_dont, /* complain_on_overflow */ | |
794 | bfd_elf_generic_reloc, /* special_function */ | |
795 | "R_PPC_TLSGD", /* name */ | |
796 | FALSE, /* partial_inplace */ | |
797 | 0, /* src_mask */ | |
798 | 0, /* dst_mask */ | |
799 | FALSE), /* pcrel_offset */ | |
800 | ||
801 | HOWTO (R_PPC_TLSLD, | |
802 | 0, /* rightshift */ | |
803 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
804 | 32, /* bitsize */ | |
805 | FALSE, /* pc_relative */ | |
806 | 0, /* bitpos */ | |
807 | complain_overflow_dont, /* complain_on_overflow */ | |
808 | bfd_elf_generic_reloc, /* special_function */ | |
809 | "R_PPC_TLSLD", /* name */ | |
810 | FALSE, /* partial_inplace */ | |
811 | 0, /* src_mask */ | |
812 | 0, /* dst_mask */ | |
813 | FALSE), /* pcrel_offset */ | |
814 | ||
7619e7c7 AM |
815 | /* Computes the load module index of the load module that contains the |
816 | definition of its TLS sym. */ | |
817 | HOWTO (R_PPC_DTPMOD32, | |
818 | 0, /* rightshift */ | |
819 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
820 | 32, /* bitsize */ | |
821 | FALSE, /* pc_relative */ | |
822 | 0, /* bitpos */ | |
823 | complain_overflow_dont, /* complain_on_overflow */ | |
824 | ppc_elf_unhandled_reloc, /* special_function */ | |
825 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 826 | FALSE, /* partial_inplace */ |
252b5132 RH |
827 | 0, /* src_mask */ |
828 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 829 | FALSE), /* pcrel_offset */ |
252b5132 | 830 | |
7619e7c7 AM |
831 | /* Computes a dtv-relative displacement, the difference between the value |
832 | of sym+add and the base address of the thread-local storage block that | |
833 | contains the definition of sym, minus 0x8000. */ | |
834 | HOWTO (R_PPC_DTPREL32, | |
835 | 0, /* rightshift */ | |
836 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
837 | 32, /* bitsize */ | |
838 | FALSE, /* pc_relative */ | |
839 | 0, /* bitpos */ | |
840 | complain_overflow_dont, /* complain_on_overflow */ | |
841 | ppc_elf_unhandled_reloc, /* special_function */ | |
842 | "R_PPC_DTPREL32", /* name */ | |
843 | FALSE, /* partial_inplace */ | |
844 | 0, /* src_mask */ | |
845 | 0xffffffff, /* dst_mask */ | |
846 | FALSE), /* pcrel_offset */ | |
847 | ||
848 | /* A 16 bit dtprel reloc. */ | |
849 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
850 | 0, /* rightshift */ |
851 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
852 | 16, /* bitsize */ | |
b34976b6 | 853 | FALSE, /* pc_relative */ |
252b5132 | 854 | 0, /* bitpos */ |
7619e7c7 AM |
855 | complain_overflow_signed, /* complain_on_overflow */ |
856 | ppc_elf_unhandled_reloc, /* special_function */ | |
857 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 858 | FALSE, /* partial_inplace */ |
252b5132 RH |
859 | 0, /* src_mask */ |
860 | 0xffff, /* dst_mask */ | |
b34976b6 | 861 | FALSE), /* pcrel_offset */ |
252b5132 | 862 | |
7619e7c7 AM |
863 | /* Like DTPREL16, but no overflow. */ |
864 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
865 | 0, /* rightshift */ |
866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
867 | 16, /* bitsize */ | |
b34976b6 | 868 | FALSE, /* pc_relative */ |
252b5132 | 869 | 0, /* bitpos */ |
7619e7c7 AM |
870 | complain_overflow_dont, /* complain_on_overflow */ |
871 | ppc_elf_unhandled_reloc, /* special_function */ | |
872 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 873 | FALSE, /* partial_inplace */ |
252b5132 RH |
874 | 0, /* src_mask */ |
875 | 0xffff, /* dst_mask */ | |
b34976b6 | 876 | FALSE), /* pcrel_offset */ |
252b5132 | 877 | |
7619e7c7 AM |
878 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
879 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
880 | 16, /* rightshift */ |
881 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
882 | 16, /* bitsize */ | |
b34976b6 | 883 | FALSE, /* pc_relative */ |
252b5132 RH |
884 | 0, /* bitpos */ |
885 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
886 | ppc_elf_unhandled_reloc, /* special_function */ |
887 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 888 | FALSE, /* partial_inplace */ |
252b5132 RH |
889 | 0, /* src_mask */ |
890 | 0xffff, /* dst_mask */ | |
b34976b6 | 891 | FALSE), /* pcrel_offset */ |
252b5132 | 892 | |
7619e7c7 AM |
893 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
894 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
895 | 16, /* rightshift */ |
896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
b34976b6 | 898 | FALSE, /* pc_relative */ |
252b5132 RH |
899 | 0, /* bitpos */ |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
901 | ppc_elf_unhandled_reloc, /* special_function */ |
902 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
252b5132 RH |
904 | 0, /* src_mask */ |
905 | 0xffff, /* dst_mask */ | |
b34976b6 | 906 | FALSE), /* pcrel_offset */ |
252b5132 | 907 | |
7619e7c7 AM |
908 | /* Computes a tp-relative displacement, the difference between the value of |
909 | sym+add and the value of the thread pointer (r13). */ | |
910 | HOWTO (R_PPC_TPREL32, | |
911 | 0, /* rightshift */ | |
912 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
913 | 32, /* bitsize */ | |
914 | FALSE, /* pc_relative */ | |
915 | 0, /* bitpos */ | |
916 | complain_overflow_dont, /* complain_on_overflow */ | |
917 | ppc_elf_unhandled_reloc, /* special_function */ | |
918 | "R_PPC_TPREL32", /* name */ | |
919 | FALSE, /* partial_inplace */ | |
920 | 0, /* src_mask */ | |
921 | 0xffffffff, /* dst_mask */ | |
922 | FALSE), /* pcrel_offset */ | |
923 | ||
924 | /* A 16 bit tprel reloc. */ | |
925 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
926 | 0, /* rightshift */ |
927 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
928 | 16, /* bitsize */ | |
b34976b6 | 929 | FALSE, /* pc_relative */ |
252b5132 | 930 | 0, /* bitpos */ |
7619e7c7 AM |
931 | complain_overflow_signed, /* complain_on_overflow */ |
932 | ppc_elf_unhandled_reloc, /* special_function */ | |
933 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 934 | FALSE, /* partial_inplace */ |
252b5132 RH |
935 | 0, /* src_mask */ |
936 | 0xffff, /* dst_mask */ | |
b34976b6 | 937 | FALSE), /* pcrel_offset */ |
252b5132 | 938 | |
7619e7c7 AM |
939 | /* Like TPREL16, but no overflow. */ |
940 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
941 | 0, /* rightshift */ |
942 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
943 | 16, /* bitsize */ | |
b34976b6 | 944 | FALSE, /* pc_relative */ |
252b5132 | 945 | 0, /* bitpos */ |
7619e7c7 AM |
946 | complain_overflow_dont, /* complain_on_overflow */ |
947 | ppc_elf_unhandled_reloc, /* special_function */ | |
948 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 949 | FALSE, /* partial_inplace */ |
252b5132 RH |
950 | 0, /* src_mask */ |
951 | 0xffff, /* dst_mask */ | |
b34976b6 | 952 | FALSE), /* pcrel_offset */ |
252b5132 | 953 | |
7619e7c7 AM |
954 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
955 | HOWTO (R_PPC_TPREL16_HI, | |
956 | 16, /* rightshift */ | |
957 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
958 | 16, /* bitsize */ | |
959 | FALSE, /* pc_relative */ | |
960 | 0, /* bitpos */ | |
961 | complain_overflow_dont, /* complain_on_overflow */ | |
962 | ppc_elf_unhandled_reloc, /* special_function */ | |
963 | "R_PPC_TPREL16_HI", /* name */ | |
964 | FALSE, /* partial_inplace */ | |
965 | 0, /* src_mask */ | |
966 | 0xffff, /* dst_mask */ | |
967 | FALSE), /* pcrel_offset */ | |
968 | ||
969 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
970 | HOWTO (R_PPC_TPREL16_HA, | |
971 | 16, /* rightshift */ | |
972 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
973 | 16, /* bitsize */ | |
974 | FALSE, /* pc_relative */ | |
975 | 0, /* bitpos */ | |
976 | complain_overflow_dont, /* complain_on_overflow */ | |
977 | ppc_elf_unhandled_reloc, /* special_function */ | |
978 | "R_PPC_TPREL16_HA", /* name */ | |
979 | FALSE, /* partial_inplace */ | |
980 | 0, /* src_mask */ | |
981 | 0xffff, /* dst_mask */ | |
982 | FALSE), /* pcrel_offset */ | |
983 | ||
984 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
985 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
986 | to the first entry. */ | |
987 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
988 | 0, /* rightshift */ |
989 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
990 | 16, /* bitsize */ | |
b34976b6 | 991 | FALSE, /* pc_relative */ |
252b5132 RH |
992 | 0, /* bitpos */ |
993 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
994 | ppc_elf_unhandled_reloc, /* special_function */ |
995 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 996 | FALSE, /* partial_inplace */ |
252b5132 RH |
997 | 0, /* src_mask */ |
998 | 0xffff, /* dst_mask */ | |
b34976b6 | 999 | FALSE), /* pcrel_offset */ |
252b5132 | 1000 | |
7619e7c7 AM |
1001 | /* Like GOT_TLSGD16, but no overflow. */ |
1002 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1003 | 0, /* rightshift */ |
7619e7c7 | 1004 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1005 | 16, /* bitsize */ |
b34976b6 | 1006 | FALSE, /* pc_relative */ |
252b5132 | 1007 | 0, /* bitpos */ |
7619e7c7 AM |
1008 | complain_overflow_dont, /* complain_on_overflow */ |
1009 | ppc_elf_unhandled_reloc, /* special_function */ | |
1010 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1011 | FALSE, /* partial_inplace */ |
252b5132 RH |
1012 | 0, /* src_mask */ |
1013 | 0xffff, /* dst_mask */ | |
b34976b6 | 1014 | FALSE), /* pcrel_offset */ |
252b5132 | 1015 | |
7619e7c7 AM |
1016 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1017 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1018 | 16, /* rightshift */ | |
1019 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1020 | 16, /* bitsize */ | |
1021 | FALSE, /* pc_relative */ | |
1022 | 0, /* bitpos */ | |
1023 | complain_overflow_dont, /* complain_on_overflow */ | |
1024 | ppc_elf_unhandled_reloc, /* special_function */ | |
1025 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1026 | FALSE, /* partial_inplace */ | |
1027 | 0, /* src_mask */ | |
1028 | 0xffff, /* dst_mask */ | |
1029 | FALSE), /* pcrel_offset */ | |
252b5132 | 1030 | |
7619e7c7 AM |
1031 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1032 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1033 | 16, /* rightshift */ | |
1034 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 16, /* bitsize */ | |
1036 | FALSE, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
1038 | complain_overflow_dont, /* complain_on_overflow */ | |
1039 | ppc_elf_unhandled_reloc, /* special_function */ | |
1040 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1041 | FALSE, /* partial_inplace */ | |
1042 | 0, /* src_mask */ | |
1043 | 0xffff, /* dst_mask */ | |
1044 | FALSE), /* pcrel_offset */ | |
1045 | ||
1046 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1047 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1048 | first entry. */ | |
1049 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1050 | 0, /* rightshift */ |
1051 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1052 | 16, /* bitsize */ | |
7619e7c7 | 1053 | FALSE, /* pc_relative */ |
252b5132 RH |
1054 | 0, /* bitpos */ |
1055 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1056 | ppc_elf_unhandled_reloc, /* special_function */ |
1057 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1058 | FALSE, /* partial_inplace */ |
252b5132 RH |
1059 | 0, /* src_mask */ |
1060 | 0xffff, /* dst_mask */ | |
b34976b6 | 1061 | FALSE), /* pcrel_offset */ |
252b5132 | 1062 | |
7619e7c7 AM |
1063 | /* Like GOT_TLSLD16, but no overflow. */ |
1064 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1065 | 0, /* rightshift */ |
7619e7c7 AM |
1066 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1067 | 16, /* bitsize */ | |
b34976b6 | 1068 | FALSE, /* pc_relative */ |
252b5132 RH |
1069 | 0, /* bitpos */ |
1070 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1071 | ppc_elf_unhandled_reloc, /* special_function */ |
1072 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1073 | FALSE, /* partial_inplace */ |
252b5132 | 1074 | 0, /* src_mask */ |
7619e7c7 | 1075 | 0xffff, /* dst_mask */ |
b34976b6 | 1076 | FALSE), /* pcrel_offset */ |
252b5132 | 1077 | |
7619e7c7 AM |
1078 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1079 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1080 | 16, /* rightshift */ | |
1081 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1082 | 16, /* bitsize */ | |
b34976b6 | 1083 | FALSE, /* pc_relative */ |
252b5132 RH |
1084 | 0, /* bitpos */ |
1085 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1086 | ppc_elf_unhandled_reloc, /* special_function */ |
1087 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1088 | FALSE, /* partial_inplace */ |
252b5132 | 1089 | 0, /* src_mask */ |
7619e7c7 | 1090 | 0xffff, /* dst_mask */ |
b34976b6 | 1091 | FALSE), /* pcrel_offset */ |
252b5132 | 1092 | |
7619e7c7 AM |
1093 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1094 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1095 | 16, /* rightshift */ | |
1096 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1097 | 16, /* bitsize */ | |
1098 | FALSE, /* pc_relative */ | |
1099 | 0, /* bitpos */ | |
1100 | complain_overflow_dont, /* complain_on_overflow */ | |
1101 | ppc_elf_unhandled_reloc, /* special_function */ | |
1102 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1103 | FALSE, /* partial_inplace */ | |
1104 | 0, /* src_mask */ | |
1105 | 0xffff, /* dst_mask */ | |
1106 | FALSE), /* pcrel_offset */ | |
1107 | ||
1108 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1109 | the offset to the entry. */ | |
1110 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1111 | 0, /* rightshift */ |
1112 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 16, /* bitsize */ | |
b34976b6 | 1114 | FALSE, /* pc_relative */ |
252b5132 RH |
1115 | 0, /* bitpos */ |
1116 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1117 | ppc_elf_unhandled_reloc, /* special_function */ |
1118 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1119 | FALSE, /* partial_inplace */ |
252b5132 RH |
1120 | 0, /* src_mask */ |
1121 | 0xffff, /* dst_mask */ | |
b34976b6 | 1122 | FALSE), /* pcrel_offset */ |
252b5132 | 1123 | |
7619e7c7 AM |
1124 | /* Like GOT_DTPREL16, but no overflow. */ |
1125 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1126 | 0, /* rightshift */ | |
1127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1128 | 16, /* bitsize */ | |
1129 | FALSE, /* pc_relative */ | |
1130 | 0, /* bitpos */ | |
1131 | complain_overflow_dont, /* complain_on_overflow */ | |
1132 | ppc_elf_unhandled_reloc, /* special_function */ | |
1133 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1134 | FALSE, /* partial_inplace */ | |
1135 | 0, /* src_mask */ | |
1136 | 0xffff, /* dst_mask */ | |
1137 | FALSE), /* pcrel_offset */ | |
252b5132 | 1138 | |
7619e7c7 AM |
1139 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1140 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1141 | 16, /* rightshift */ | |
1142 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1143 | 16, /* bitsize */ | |
1144 | FALSE, /* pc_relative */ | |
1145 | 0, /* bitpos */ | |
1146 | complain_overflow_dont, /* complain_on_overflow */ | |
1147 | ppc_elf_unhandled_reloc, /* special_function */ | |
1148 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1149 | FALSE, /* partial_inplace */ | |
1150 | 0, /* src_mask */ | |
1151 | 0xffff, /* dst_mask */ | |
1152 | FALSE), /* pcrel_offset */ | |
252b5132 | 1153 | |
7619e7c7 AM |
1154 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1155 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1156 | 16, /* rightshift */ | |
1157 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1158 | 16, /* bitsize */ | |
1159 | FALSE, /* pc_relative */ | |
1160 | 0, /* bitpos */ | |
1161 | complain_overflow_dont, /* complain_on_overflow */ | |
1162 | ppc_elf_unhandled_reloc, /* special_function */ | |
1163 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1164 | FALSE, /* partial_inplace */ | |
1165 | 0, /* src_mask */ | |
1166 | 0xffff, /* dst_mask */ | |
1167 | FALSE), /* pcrel_offset */ | |
c3668558 | 1168 | |
7619e7c7 AM |
1169 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1170 | offset to the entry. */ | |
1171 | HOWTO (R_PPC_GOT_TPREL16, | |
1172 | 0, /* rightshift */ | |
1173 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1174 | 16, /* bitsize */ | |
1175 | FALSE, /* pc_relative */ | |
1176 | 0, /* bitpos */ | |
1177 | complain_overflow_signed, /* complain_on_overflow */ | |
1178 | ppc_elf_unhandled_reloc, /* special_function */ | |
1179 | "R_PPC_GOT_TPREL16", /* name */ | |
1180 | FALSE, /* partial_inplace */ | |
1181 | 0, /* src_mask */ | |
1182 | 0xffff, /* dst_mask */ | |
1183 | FALSE), /* pcrel_offset */ | |
1184 | ||
1185 | /* Like GOT_TPREL16, but no overflow. */ | |
1186 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1187 | 0, /* rightshift */ | |
1188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1189 | 16, /* bitsize */ | |
1190 | FALSE, /* pc_relative */ | |
1191 | 0, /* bitpos */ | |
1192 | complain_overflow_dont, /* complain_on_overflow */ | |
1193 | ppc_elf_unhandled_reloc, /* special_function */ | |
1194 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1195 | FALSE, /* partial_inplace */ | |
1196 | 0, /* src_mask */ | |
1197 | 0xffff, /* dst_mask */ | |
1198 | FALSE), /* pcrel_offset */ | |
1199 | ||
1200 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1201 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1202 | 16, /* rightshift */ | |
1203 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1204 | 16, /* bitsize */ | |
1205 | FALSE, /* pc_relative */ | |
1206 | 0, /* bitpos */ | |
1207 | complain_overflow_dont, /* complain_on_overflow */ | |
1208 | ppc_elf_unhandled_reloc, /* special_function */ | |
1209 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1210 | FALSE, /* partial_inplace */ | |
1211 | 0, /* src_mask */ | |
1212 | 0xffff, /* dst_mask */ | |
1213 | FALSE), /* pcrel_offset */ | |
1214 | ||
1215 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1216 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1217 | 16, /* rightshift */ | |
1218 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1219 | 16, /* bitsize */ | |
1220 | FALSE, /* pc_relative */ | |
1221 | 0, /* bitpos */ | |
1222 | complain_overflow_dont, /* complain_on_overflow */ | |
1223 | ppc_elf_unhandled_reloc, /* special_function */ | |
1224 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1225 | FALSE, /* partial_inplace */ | |
1226 | 0, /* src_mask */ | |
1227 | 0xffff, /* dst_mask */ | |
1228 | FALSE), /* pcrel_offset */ | |
1229 | ||
1230 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1231 | in the SVR4 ELF ABI. */ | |
1232 | ||
1233 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1234 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1235 | 0, /* rightshift */ | |
1236 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1237 | 32, /* bitsize */ | |
1238 | FALSE, /* pc_relative */ | |
1239 | 0, /* bitpos */ | |
86c95733 | 1240 | complain_overflow_dont, /* complain_on_overflow */ |
7619e7c7 AM |
1241 | bfd_elf_generic_reloc, /* special_function */ |
1242 | "R_PPC_EMB_NADDR32", /* name */ | |
1243 | FALSE, /* partial_inplace */ | |
1244 | 0, /* src_mask */ | |
1245 | 0xffffffff, /* dst_mask */ | |
1246 | FALSE), /* pcrel_offset */ | |
1247 | ||
1248 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1249 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1250 | 0, /* rightshift */ | |
1251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 16, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
86c95733 | 1255 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 AM |
1256 | bfd_elf_generic_reloc, /* special_function */ |
1257 | "R_PPC_EMB_NADDR16", /* name */ | |
1258 | FALSE, /* partial_inplace */ | |
1259 | 0, /* src_mask */ | |
1260 | 0xffff, /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1264 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1265 | 0, /* rightshift */ | |
1266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1267 | 16, /* bitsize */ | |
1268 | FALSE, /* pc_relative */ | |
1269 | 0, /* bitpos */ | |
1270 | complain_overflow_dont,/* complain_on_overflow */ | |
1271 | bfd_elf_generic_reloc, /* special_function */ | |
1272 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1273 | FALSE, /* partial_inplace */ | |
1274 | 0, /* src_mask */ | |
1275 | 0xffff, /* dst_mask */ | |
1276 | FALSE), /* pcrel_offset */ | |
1277 | ||
1278 | /* The high order 16 bits of the addend minus the symbol. */ | |
1279 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1280 | 16, /* rightshift */ | |
1281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 16, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_dont, /* complain_on_overflow */ | |
1286 | bfd_elf_generic_reloc, /* special_function */ | |
1287 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0xffff, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
1293 | /* The high order 16 bits of the result of the addend minus the address, | |
1294 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1295 | is negative. */ | |
1296 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1297 | 16, /* rightshift */ | |
1298 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 16, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
25dbc73a AM |
1303 | ppc_elf_addr16_ha_reloc, /* special_function */ |
1304 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0, /* src_mask */ | |
1307 | 0xffff, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
1310 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1311 | address in the .sdata section, and returning the offset from | |
1312 | _SDA_BASE_ for that relocation. */ | |
1313 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1314 | 0, /* rightshift */ | |
1315 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1316 | 16, /* bitsize */ | |
1317 | FALSE, /* pc_relative */ | |
1318 | 0, /* bitpos */ | |
bd6c6e2b | 1319 | complain_overflow_signed, /* complain_on_overflow */ |
25dbc73a AM |
1320 | bfd_elf_generic_reloc, /* special_function */ |
1321 | "R_PPC_EMB_SDAI16", /* name */ | |
1322 | FALSE, /* partial_inplace */ | |
1323 | 0, /* src_mask */ | |
1324 | 0xffff, /* dst_mask */ | |
1325 | FALSE), /* pcrel_offset */ | |
1326 | ||
1327 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1328 | address in the .sdata2 section, and returning the offset from | |
1329 | _SDA2_BASE_ for that relocation. */ | |
1330 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1331 | 0, /* rightshift */ | |
1332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1333 | 16, /* bitsize */ | |
1334 | FALSE, /* pc_relative */ | |
1335 | 0, /* bitpos */ | |
bd6c6e2b | 1336 | complain_overflow_signed, /* complain_on_overflow */ |
25dbc73a AM |
1337 | bfd_elf_generic_reloc, /* special_function */ |
1338 | "R_PPC_EMB_SDA2I16", /* name */ | |
1339 | FALSE, /* partial_inplace */ | |
1340 | 0, /* src_mask */ | |
1341 | 0xffff, /* dst_mask */ | |
1342 | FALSE), /* pcrel_offset */ | |
1343 | ||
1344 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1345 | small data items. */ | |
1346 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1347 | 0, /* rightshift */ | |
1348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1349 | 16, /* bitsize */ | |
1350 | FALSE, /* pc_relative */ | |
1351 | 0, /* bitpos */ | |
1352 | complain_overflow_signed, /* complain_on_overflow */ | |
1353 | bfd_elf_generic_reloc, /* special_function */ | |
1354 | "R_PPC_EMB_SDA2REL", /* name */ | |
1355 | FALSE, /* partial_inplace */ | |
1356 | 0, /* src_mask */ | |
1357 | 0xffff, /* dst_mask */ | |
1358 | FALSE), /* pcrel_offset */ | |
1359 | ||
1360 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1361 | signed offset from the appropriate base, and filling in the register | |
1362 | field with the appropriate register (0, 2, or 13). */ | |
1363 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1364 | 0, /* rightshift */ | |
1365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1366 | 16, /* bitsize */ | |
1367 | FALSE, /* pc_relative */ | |
1368 | 0, /* bitpos */ | |
1369 | complain_overflow_signed, /* complain_on_overflow */ | |
1370 | bfd_elf_generic_reloc, /* special_function */ | |
1371 | "R_PPC_EMB_SDA21", /* name */ | |
1372 | FALSE, /* partial_inplace */ | |
1373 | 0, /* src_mask */ | |
1374 | 0xffff, /* dst_mask */ | |
1375 | FALSE), /* pcrel_offset */ | |
1376 | ||
1377 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1378 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1379 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1380 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1381 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1382 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1383 | ||
1384 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1385 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1386 | register field with the appropriate register (0, 2, or 13). */ | |
1387 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1388 | 0, /* rightshift */ | |
1389 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 16, /* bitsize */ | |
ddfd6795 | 1391 | FALSE, /* pc_relative */ |
25dbc73a AM |
1392 | 0, /* bitpos */ |
1393 | complain_overflow_signed, /* complain_on_overflow */ | |
1394 | bfd_elf_generic_reloc, /* special_function */ | |
1395 | "R_PPC_EMB_RELSDA", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | 0xffff, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
b9c361e0 JL |
1401 | /* A relative 8 bit branch. */ |
1402 | HOWTO (R_PPC_VLE_REL8, /* type */ | |
1403 | 1, /* rightshift */ | |
1404 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1405 | 8, /* bitsize */ | |
1406 | TRUE, /* pc_relative */ | |
1407 | 0, /* bitpos */ | |
1408 | complain_overflow_signed, /* complain_on_overflow */ | |
1409 | bfd_elf_generic_reloc, /* special_function */ | |
1410 | "R_PPC_VLE_REL8", /* name */ | |
1411 | FALSE, /* partial_inplace */ | |
1412 | 0, /* src_mask */ | |
1413 | 0xff, /* dst_mask */ | |
1414 | TRUE), /* pcrel_offset */ | |
68ffbac6 | 1415 | |
b9c361e0 JL |
1416 | /* A relative 15 bit branch. */ |
1417 | HOWTO (R_PPC_VLE_REL15, /* type */ | |
1418 | 1, /* rightshift */ | |
1419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1420 | 15, /* bitsize */ | |
1421 | TRUE, /* pc_relative */ | |
1422 | 1, /* bitpos */ | |
1423 | complain_overflow_signed, /* complain_on_overflow */ | |
1424 | bfd_elf_generic_reloc, /* special_function */ | |
1425 | "R_PPC_VLE_REL15", /* name */ | |
1426 | FALSE, /* partial_inplace */ | |
1427 | 0, /* src_mask */ | |
1428 | 0xfe, /* dst_mask */ | |
1429 | TRUE), /* pcrel_offset */ | |
1430 | ||
68ffbac6 | 1431 | /* A relative 24 bit branch. */ |
b9c361e0 JL |
1432 | HOWTO (R_PPC_VLE_REL24, /* type */ |
1433 | 1, /* rightshift */ | |
1434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1435 | 24, /* bitsize */ | |
1436 | TRUE, /* pc_relative */ | |
1437 | 1, /* bitpos */ | |
1438 | complain_overflow_signed, /* complain_on_overflow */ | |
1439 | bfd_elf_generic_reloc, /* special_function */ | |
1440 | "R_PPC_VLE_REL24", /* name */ | |
1441 | FALSE, /* partial_inplace */ | |
1442 | 0, /* src_mask */ | |
1443 | 0x1fffffe, /* dst_mask */ | |
1444 | TRUE), /* pcrel_offset */ | |
1445 | ||
1446 | /* The 16 LSBS in split16a format. */ | |
1447 | HOWTO (R_PPC_VLE_LO16A, /* type */ | |
1448 | 0, /* rightshift */ | |
1449 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1450 | 16, /* bitsize */ |
bdaacd3a | 1451 | FALSE, /* pc_relative */ |
b9c361e0 | 1452 | 0, /* bitpos */ |
86c95733 | 1453 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1454 | bfd_elf_generic_reloc, /* special_function */ |
1455 | "R_PPC_VLE_LO16A", /* name */ | |
1456 | FALSE, /* partial_inplace */ | |
1457 | 0, /* src_mask */ | |
bdaacd3a | 1458 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1459 | FALSE), /* pcrel_offset */ |
1460 | ||
1461 | /* The 16 LSBS in split16d format. */ | |
1462 | HOWTO (R_PPC_VLE_LO16D, /* type */ | |
1463 | 0, /* rightshift */ | |
1464 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1465 | 16, /* bitsize */ |
b9c361e0 JL |
1466 | FALSE, /* pc_relative */ |
1467 | 0, /* bitpos */ | |
86c95733 | 1468 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1469 | bfd_elf_generic_reloc, /* special_function */ |
1470 | "R_PPC_VLE_LO16D", /* name */ | |
1471 | FALSE, /* partial_inplace */ | |
1472 | 0, /* src_mask */ | |
1473 | 0x1f07ff, /* dst_mask */ | |
1474 | FALSE), /* pcrel_offset */ | |
1475 | ||
1476 | /* Bits 16-31 split16a format. */ | |
1477 | HOWTO (R_PPC_VLE_HI16A, /* type */ | |
86c95733 | 1478 | 16, /* rightshift */ |
b9c361e0 | 1479 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1480 | 16, /* bitsize */ |
b9c361e0 JL |
1481 | FALSE, /* pc_relative */ |
1482 | 0, /* bitpos */ | |
86c95733 | 1483 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1484 | bfd_elf_generic_reloc, /* special_function */ |
1485 | "R_PPC_VLE_HI16A", /* name */ | |
1486 | FALSE, /* partial_inplace */ | |
1487 | 0, /* src_mask */ | |
bdaacd3a | 1488 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1489 | FALSE), /* pcrel_offset */ |
1490 | ||
1491 | /* Bits 16-31 split16d format. */ | |
1492 | HOWTO (R_PPC_VLE_HI16D, /* type */ | |
86c95733 | 1493 | 16, /* rightshift */ |
b9c361e0 | 1494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1495 | 16, /* bitsize */ |
b9c361e0 JL |
1496 | FALSE, /* pc_relative */ |
1497 | 0, /* bitpos */ | |
86c95733 | 1498 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1499 | bfd_elf_generic_reloc, /* special_function */ |
1500 | "R_PPC_VLE_HI16D", /* name */ | |
1501 | FALSE, /* partial_inplace */ | |
1502 | 0, /* src_mask */ | |
1503 | 0x1f07ff, /* dst_mask */ | |
1504 | FALSE), /* pcrel_offset */ | |
1505 | ||
1506 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
1507 | HOWTO (R_PPC_VLE_HA16A, /* type */ | |
86c95733 | 1508 | 16, /* rightshift */ |
b9c361e0 | 1509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1510 | 16, /* bitsize */ |
b9c361e0 JL |
1511 | FALSE, /* pc_relative */ |
1512 | 0, /* bitpos */ | |
86c95733 | 1513 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1514 | bfd_elf_generic_reloc, /* special_function */ |
1515 | "R_PPC_VLE_HA16A", /* name */ | |
1516 | FALSE, /* partial_inplace */ | |
1517 | 0, /* src_mask */ | |
bdaacd3a | 1518 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1519 | FALSE), /* pcrel_offset */ |
1520 | ||
1521 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
1522 | HOWTO (R_PPC_VLE_HA16D, /* type */ | |
86c95733 | 1523 | 16, /* rightshift */ |
b9c361e0 | 1524 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1525 | 16, /* bitsize */ |
b9c361e0 JL |
1526 | FALSE, /* pc_relative */ |
1527 | 0, /* bitpos */ | |
86c95733 | 1528 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1529 | bfd_elf_generic_reloc, /* special_function */ |
1530 | "R_PPC_VLE_HA16D", /* name */ | |
1531 | FALSE, /* partial_inplace */ | |
1532 | 0, /* src_mask */ | |
1533 | 0x1f07ff, /* dst_mask */ | |
1534 | FALSE), /* pcrel_offset */ | |
1535 | ||
86c95733 AM |
1536 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
1537 | instructions. If the register base is 0 then the linker changes | |
1538 | the e_add16i to an e_li instruction. */ | |
1539 | HOWTO (R_PPC_VLE_SDA21, /* type */ | |
b9c361e0 JL |
1540 | 0, /* rightshift */ |
1541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1542 | 16, /* bitsize */ |
b9c361e0 JL |
1543 | FALSE, /* pc_relative */ |
1544 | 0, /* bitpos */ | |
86c95733 | 1545 | complain_overflow_signed, /* complain_on_overflow */ |
b9c361e0 JL |
1546 | bfd_elf_generic_reloc, /* special_function */ |
1547 | "R_PPC_VLE_SDA21", /* name */ | |
1548 | FALSE, /* partial_inplace */ | |
1549 | 0, /* src_mask */ | |
1550 | 0xffff, /* dst_mask */ | |
1551 | FALSE), /* pcrel_offset */ | |
1552 | ||
86c95733 | 1553 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
b9c361e0 JL |
1554 | HOWTO (R_PPC_VLE_SDA21_LO, /* type */ |
1555 | 0, /* rightshift */ | |
1556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1557 | 16, /* bitsize */ |
b9c361e0 JL |
1558 | FALSE, /* pc_relative */ |
1559 | 0, /* bitpos */ | |
86c95733 | 1560 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1561 | bfd_elf_generic_reloc, /* special_function */ |
1562 | "R_PPC_VLE_SDA21_LO", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0, /* src_mask */ | |
86c95733 | 1565 | 0xffff, /* dst_mask */ |
b9c361e0 JL |
1566 | FALSE), /* pcrel_offset */ |
1567 | ||
1568 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
1569 | HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */ | |
1570 | 0, /* rightshift */ | |
1571 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1572 | 16, /* bitsize */ |
b9c361e0 JL |
1573 | FALSE, /* pc_relative */ |
1574 | 0, /* bitpos */ | |
86c95733 | 1575 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1576 | bfd_elf_generic_reloc, /* special_function */ |
1577 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
1578 | FALSE, /* partial_inplace */ | |
1579 | 0, /* src_mask */ | |
bdaacd3a | 1580 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1581 | FALSE), /* pcrel_offset */ |
1582 | ||
1583 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
b9c361e0 JL |
1584 | HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */ |
1585 | 0, /* rightshift */ | |
1586 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1587 | 16, /* bitsize */ |
b9c361e0 JL |
1588 | FALSE, /* pc_relative */ |
1589 | 0, /* bitpos */ | |
86c95733 | 1590 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1591 | bfd_elf_generic_reloc, /* special_function */ |
1592 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
1593 | FALSE, /* partial_inplace */ | |
1594 | 0, /* src_mask */ | |
1595 | 0x1f07ff, /* dst_mask */ | |
1596 | FALSE), /* pcrel_offset */ | |
1597 | ||
1598 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
1599 | HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */ | |
86c95733 | 1600 | 16, /* rightshift */ |
b9c361e0 | 1601 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1602 | 16, /* bitsize */ |
b9c361e0 JL |
1603 | FALSE, /* pc_relative */ |
1604 | 0, /* bitpos */ | |
86c95733 | 1605 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1606 | bfd_elf_generic_reloc, /* special_function */ |
1607 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
1608 | FALSE, /* partial_inplace */ | |
1609 | 0, /* src_mask */ | |
bdaacd3a | 1610 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1611 | FALSE), /* pcrel_offset */ |
1612 | ||
1613 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
1614 | HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */ | |
86c95733 | 1615 | 16, /* rightshift */ |
b9c361e0 | 1616 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1617 | 16, /* bitsize */ |
b9c361e0 JL |
1618 | FALSE, /* pc_relative */ |
1619 | 0, /* bitpos */ | |
86c95733 | 1620 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1621 | bfd_elf_generic_reloc, /* special_function */ |
1622 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
1623 | FALSE, /* partial_inplace */ | |
1624 | 0, /* src_mask */ | |
1625 | 0x1f07ff, /* dst_mask */ | |
1626 | FALSE), /* pcrel_offset */ | |
1627 | ||
1628 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
1629 | HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */ | |
86c95733 | 1630 | 16, /* rightshift */ |
b9c361e0 | 1631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1632 | 16, /* bitsize */ |
b9c361e0 JL |
1633 | FALSE, /* pc_relative */ |
1634 | 0, /* bitpos */ | |
86c95733 | 1635 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1636 | bfd_elf_generic_reloc, /* special_function */ |
1637 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
1638 | FALSE, /* partial_inplace */ | |
1639 | 0, /* src_mask */ | |
bdaacd3a | 1640 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1641 | FALSE), /* pcrel_offset */ |
1642 | ||
1643 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
1644 | HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */ | |
86c95733 | 1645 | 16, /* rightshift */ |
b9c361e0 | 1646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1647 | 16, /* bitsize */ |
b9c361e0 JL |
1648 | FALSE, /* pc_relative */ |
1649 | 0, /* bitpos */ | |
86c95733 | 1650 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1651 | bfd_elf_generic_reloc, /* special_function */ |
1652 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
1653 | FALSE, /* partial_inplace */ | |
1654 | 0, /* src_mask */ | |
1655 | 0x1f07ff, /* dst_mask */ | |
1656 | FALSE), /* pcrel_offset */ | |
1657 | ||
e054468f AM |
1658 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1659 | 0, /* rightshift */ | |
1660 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1661 | 32, /* bitsize */ | |
1662 | FALSE, /* pc_relative */ | |
1663 | 0, /* bitpos */ | |
86c95733 | 1664 | complain_overflow_dont, /* complain_on_overflow */ |
e054468f AM |
1665 | bfd_elf_generic_reloc, /* special_function */ |
1666 | "R_PPC_IRELATIVE", /* name */ | |
1667 | FALSE, /* partial_inplace */ | |
1668 | 0, /* src_mask */ | |
1669 | 0xffffffff, /* dst_mask */ | |
1670 | FALSE), /* pcrel_offset */ | |
1671 | ||
d7128ce4 AM |
1672 | /* A 16 bit relative relocation. */ |
1673 | HOWTO (R_PPC_REL16, /* type */ | |
1674 | 0, /* rightshift */ | |
1675 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1676 | 16, /* bitsize */ | |
1677 | TRUE, /* pc_relative */ | |
1678 | 0, /* bitpos */ | |
86c95733 | 1679 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1680 | bfd_elf_generic_reloc, /* special_function */ |
1681 | "R_PPC_REL16", /* name */ | |
1682 | FALSE, /* partial_inplace */ | |
1683 | 0, /* src_mask */ | |
1684 | 0xffff, /* dst_mask */ | |
1685 | TRUE), /* pcrel_offset */ | |
1686 | ||
1687 | /* A 16 bit relative relocation without overflow. */ | |
1688 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1689 | 0, /* rightshift */ | |
1690 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1691 | 16, /* bitsize */ | |
1692 | TRUE, /* pc_relative */ | |
1693 | 0, /* bitpos */ | |
1694 | complain_overflow_dont,/* complain_on_overflow */ | |
1695 | bfd_elf_generic_reloc, /* special_function */ | |
1696 | "R_PPC_REL16_LO", /* name */ | |
1697 | FALSE, /* partial_inplace */ | |
1698 | 0, /* src_mask */ | |
1699 | 0xffff, /* dst_mask */ | |
1700 | TRUE), /* pcrel_offset */ | |
1701 | ||
1702 | /* The high order 16 bits of a relative address. */ | |
1703 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1704 | 16, /* rightshift */ | |
1705 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1706 | 16, /* bitsize */ | |
1707 | TRUE, /* pc_relative */ | |
1708 | 0, /* bitpos */ | |
1709 | complain_overflow_dont, /* complain_on_overflow */ | |
1710 | bfd_elf_generic_reloc, /* special_function */ | |
1711 | "R_PPC_REL16_HI", /* name */ | |
1712 | FALSE, /* partial_inplace */ | |
1713 | 0, /* src_mask */ | |
1714 | 0xffff, /* dst_mask */ | |
1715 | TRUE), /* pcrel_offset */ | |
1716 | ||
1717 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1718 | the low 16 bits, treated as a signed number, is negative. */ | |
1719 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1720 | 16, /* rightshift */ | |
1721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1722 | 16, /* bitsize */ | |
1723 | TRUE, /* pc_relative */ | |
1724 | 0, /* bitpos */ | |
1725 | complain_overflow_dont, /* complain_on_overflow */ | |
1726 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1727 | "R_PPC_REL16_HA", /* name */ | |
1728 | FALSE, /* partial_inplace */ | |
1729 | 0, /* src_mask */ | |
1730 | 0xffff, /* dst_mask */ | |
1731 | TRUE), /* pcrel_offset */ | |
1732 | ||
a680de9a PB |
1733 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
1734 | HOWTO (R_PPC_REL16DX_HA, /* type */ | |
1735 | 16, /* rightshift */ | |
1736 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1737 | 16, /* bitsize */ | |
1738 | TRUE, /* pc_relative */ | |
1739 | 0, /* bitpos */ | |
1740 | complain_overflow_signed, /* complain_on_overflow */ | |
1741 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1742 | "R_PPC_REL16DX_HA", /* name */ | |
1743 | FALSE, /* partial_inplace */ | |
1744 | 0, /* src_mask */ | |
1745 | 0x1fffc1, /* dst_mask */ | |
1746 | TRUE), /* pcrel_offset */ | |
1747 | ||
25dbc73a AM |
1748 | /* GNU extension to record C++ vtable hierarchy. */ |
1749 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1750 | 0, /* rightshift */ | |
1751 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1752 | 0, /* bitsize */ | |
1753 | FALSE, /* pc_relative */ | |
1754 | 0, /* bitpos */ | |
1755 | complain_overflow_dont, /* complain_on_overflow */ | |
1756 | NULL, /* special_function */ | |
1757 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1758 | FALSE, /* partial_inplace */ | |
1759 | 0, /* src_mask */ | |
1760 | 0, /* dst_mask */ | |
1761 | FALSE), /* pcrel_offset */ | |
1762 | ||
1763 | /* GNU extension to record C++ vtable member usage. */ | |
1764 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1765 | 0, /* rightshift */ | |
1766 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1767 | 0, /* bitsize */ | |
1768 | FALSE, /* pc_relative */ | |
1769 | 0, /* bitpos */ | |
1770 | complain_overflow_dont, /* complain_on_overflow */ | |
1771 | NULL, /* special_function */ | |
1772 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1773 | FALSE, /* partial_inplace */ |
1774 | 0, /* src_mask */ | |
25dbc73a | 1775 | 0, /* dst_mask */ |
7619e7c7 AM |
1776 | FALSE), /* pcrel_offset */ |
1777 | ||
25dbc73a AM |
1778 | /* Phony reloc to handle AIX style TOC entries. */ |
1779 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1780 | 0, /* rightshift */ |
1781 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1782 | 16, /* bitsize */ | |
1783 | FALSE, /* pc_relative */ | |
1784 | 0, /* bitpos */ | |
25dbc73a | 1785 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1786 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1787 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1788 | FALSE, /* partial_inplace */ |
1789 | 0, /* src_mask */ | |
1790 | 0xffff, /* dst_mask */ | |
1791 | FALSE), /* pcrel_offset */ | |
25dbc73a | 1792 | }; |
70a38d42 SDJ |
1793 | |
1794 | /* External 32-bit PPC structure for PRPSINFO. This structure is | |
1795 | ABI-defined, thus we choose to use char arrays here in order to | |
1796 | avoid dealing with different types in different architectures. | |
1797 | ||
1798 | The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while | |
1799 | most non-PPC architectures use `short int'. | |
1800 | ||
1801 | This structure will ultimately be written in the corefile's note | |
1802 | section, as the PRPSINFO. */ | |
1803 | ||
1804 | struct elf_external_ppc_linux_prpsinfo32 | |
1805 | { | |
1806 | char pr_state; /* Numeric process state. */ | |
1807 | char pr_sname; /* Char for pr_state. */ | |
1808 | char pr_zomb; /* Zombie. */ | |
1809 | char pr_nice; /* Nice val. */ | |
1810 | char pr_flag[4]; /* Flags. */ | |
1811 | char pr_uid[4]; | |
1812 | char pr_gid[4]; | |
1813 | char pr_pid[4]; | |
1814 | char pr_ppid[4]; | |
1815 | char pr_pgrp[4]; | |
1816 | char pr_sid[4]; | |
1817 | char pr_fname[16]; /* Filename of executable. */ | |
1818 | char pr_psargs[80]; /* Initial part of arg list. */ | |
1819 | }; | |
1820 | ||
aeb70569 AM |
1821 | /* Helper function to copy an elf_internal_linux_prpsinfo in host |
1822 | endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */ | |
70a38d42 | 1823 | |
aeb70569 AM |
1824 | static inline void |
1825 | swap_ppc_linux_prpsinfo32_out (bfd *obfd, | |
1826 | const struct elf_internal_linux_prpsinfo *from, | |
1827 | struct elf_external_ppc_linux_prpsinfo32 *to) | |
1828 | { | |
1829 | bfd_put_8 (obfd, from->pr_state, &to->pr_state); | |
1830 | bfd_put_8 (obfd, from->pr_sname, &to->pr_sname); | |
1831 | bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb); | |
1832 | bfd_put_8 (obfd, from->pr_nice, &to->pr_nice); | |
1833 | bfd_put_32 (obfd, from->pr_flag, to->pr_flag); | |
1834 | bfd_put_32 (obfd, from->pr_uid, to->pr_uid); | |
1835 | bfd_put_32 (obfd, from->pr_gid, to->pr_gid); | |
1836 | bfd_put_32 (obfd, from->pr_pid, to->pr_pid); | |
1837 | bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid); | |
1838 | bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp); | |
1839 | bfd_put_32 (obfd, from->pr_sid, to->pr_sid); | |
1840 | strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname)); | |
1841 | strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs)); | |
1842 | } | |
25dbc73a AM |
1843 | \f |
1844 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1845 | ||
1846 | static void | |
1847 | ppc_elf_howto_init (void) | |
1848 | { | |
1849 | unsigned int i, type; | |
1850 | ||
1851 | for (i = 0; | |
1852 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1853 | i++) | |
1854 | { | |
1855 | type = ppc_elf_howto_raw[i].type; | |
1856 | if (type >= (sizeof (ppc_elf_howto_table) | |
1857 | / sizeof (ppc_elf_howto_table[0]))) | |
1858 | abort (); | |
1859 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | static reloc_howto_type * | |
1864 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1865 | bfd_reloc_code_real_type code) | |
1866 | { | |
1867 | enum elf_ppc_reloc_type r; | |
1868 | ||
1869 | /* Initialize howto table if not already done. */ | |
1870 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1871 | ppc_elf_howto_init (); | |
1872 | ||
1873 | switch (code) | |
1874 | { | |
1875 | default: | |
1876 | return NULL; | |
1877 | ||
1878 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1879 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1880 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1881 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1882 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1883 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1884 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1885 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1886 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1887 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1888 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1889 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1890 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1891 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1892 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1893 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1894 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1895 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1896 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1897 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1898 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1899 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1900 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1901 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1902 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1903 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1904 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1905 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1906 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1907 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1908 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1909 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1910 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1911 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1912 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1913 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1914 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1915 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1916 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1917 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1918 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1919 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1920 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1921 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1922 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1923 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1924 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1925 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1926 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1927 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1928 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1929 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1930 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1931 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1932 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1933 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1934 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1935 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1936 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1937 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1938 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1939 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1940 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1941 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1942 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1943 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1944 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1945 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1946 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1947 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1948 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1949 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1950 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1951 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1952 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1953 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1954 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1955 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1956 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1957 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1958 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1959 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1960 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1961 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1962 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1963 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1964 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1965 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1966 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1967 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1968 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1969 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1970 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1971 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1972 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1973 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1974 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1975 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1976 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1977 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1978 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1979 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1980 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1981 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1982 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1983 | r = R_PPC_VLE_SDAREL_LO16A; | |
1984 | break; | |
1985 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
1986 | r = R_PPC_VLE_SDAREL_LO16D; | |
1987 | break; | |
1988 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
1989 | r = R_PPC_VLE_SDAREL_HI16A; | |
1990 | break; | |
1991 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
1992 | r = R_PPC_VLE_SDAREL_HI16D; | |
1993 | break; | |
1994 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
1995 | r = R_PPC_VLE_SDAREL_HA16A; | |
1996 | break; | |
1997 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
1998 | r = R_PPC_VLE_SDAREL_HA16D; | |
1999 | break; | |
d7128ce4 AM |
2000 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
2001 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
2002 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
2003 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
a680de9a | 2004 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
2005 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
2006 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
2007 | } | |
2008 | ||
2009 | return ppc_elf_howto_table[r]; | |
2010 | }; | |
2011 | ||
157090f7 AM |
2012 | static reloc_howto_type * |
2013 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2014 | const char *r_name) | |
2015 | { | |
2016 | unsigned int i; | |
2017 | ||
2018 | for (i = 0; | |
2019 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2020 | i++) | |
2021 | if (ppc_elf_howto_raw[i].name != NULL | |
2022 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2023 | return &ppc_elf_howto_raw[i]; | |
2024 | ||
2025 | return NULL; | |
2026 | } | |
2027 | ||
25dbc73a AM |
2028 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2029 | ||
2030 | static void | |
2031 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
2032 | arelent *cache_ptr, | |
2033 | Elf_Internal_Rela *dst) | |
2034 | { | |
cd21f5da NC |
2035 | unsigned int r_type; |
2036 | ||
25dbc73a AM |
2037 | /* Initialize howto table if not already done. */ |
2038 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2039 | ppc_elf_howto_init (); | |
2040 | ||
cd21f5da NC |
2041 | r_type = ELF32_R_TYPE (dst->r_info); |
2042 | if (r_type >= R_PPC_max) | |
2043 | { | |
64d29018 | 2044 | (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"), |
cd21f5da NC |
2045 | abfd, r_type); |
2046 | bfd_set_error (bfd_error_bad_value); | |
2047 | r_type = R_PPC_NONE; | |
2048 | } | |
2049 | cache_ptr->howto = ppc_elf_howto_table[r_type]; | |
375de94a AM |
2050 | |
2051 | /* Just because the above assert didn't trigger doesn't mean that | |
2052 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
2053 | if (!cache_ptr->howto) | |
2054 | { | |
2055 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
cd21f5da | 2056 | abfd, r_type); |
375de94a AM |
2057 | bfd_set_error (bfd_error_bad_value); |
2058 | ||
2059 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
2060 | } | |
25dbc73a AM |
2061 | } |
2062 | ||
d7128ce4 | 2063 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2064 | |
2065 | static bfd_reloc_status_type | |
2066 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
2067 | arelent *reloc_entry, | |
2068 | asymbol *symbol, | |
2069 | void *data ATTRIBUTE_UNUSED, | |
2070 | asection *input_section, | |
2071 | bfd *output_bfd, | |
2072 | char **error_message ATTRIBUTE_UNUSED) | |
2073 | { | |
a680de9a PB |
2074 | enum elf_ppc_reloc_type r_type; |
2075 | long insn; | |
2076 | bfd_size_type octets; | |
2077 | bfd_vma value; | |
25dbc73a AM |
2078 | |
2079 | if (output_bfd != NULL) | |
2080 | { | |
2081 | reloc_entry->address += input_section->output_offset; | |
2082 | return bfd_reloc_ok; | |
2083 | } | |
2084 | ||
a680de9a PB |
2085 | reloc_entry->addend += 0x8000; |
2086 | r_type = reloc_entry->howto->type; | |
2087 | if (r_type != R_PPC_REL16DX_HA) | |
2088 | return bfd_reloc_continue; | |
2089 | ||
2090 | value = 0; | |
2091 | if (!bfd_is_com_section (symbol->section)) | |
2092 | value = symbol->value; | |
2093 | value += (reloc_entry->addend | |
2094 | + symbol->section->output_offset | |
2095 | + symbol->section->output_section->vma); | |
2096 | value -= (reloc_entry->address | |
2097 | + input_section->output_offset | |
2098 | + input_section->output_section->vma); | |
2099 | value >>= 16; | |
2100 | ||
2101 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2102 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2103 | insn &= ~0x1fffc1; | |
2104 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2105 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2106 | return bfd_reloc_ok; | |
25dbc73a AM |
2107 | } |
2108 | ||
2109 | static bfd_reloc_status_type | |
2110 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2111 | arelent *reloc_entry, | |
2112 | asymbol *symbol, | |
2113 | void *data, | |
2114 | asection *input_section, | |
2115 | bfd *output_bfd, | |
2116 | char **error_message) | |
2117 | { | |
2118 | /* If this is a relocatable link (output_bfd test tells us), just | |
2119 | call the generic function. Any adjustment will be done at final | |
2120 | link time. */ | |
2121 | if (output_bfd != NULL) | |
2122 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2123 | input_section, output_bfd, error_message); | |
2124 | ||
2125 | if (error_message != NULL) | |
2126 | { | |
2127 | static char buf[60]; | |
2128 | sprintf (buf, _("generic linker can't handle %s"), | |
2129 | reloc_entry->howto->name); | |
2130 | *error_message = buf; | |
2131 | } | |
2132 | return bfd_reloc_dangerous; | |
2133 | } | |
2134 | \f | |
2135 | /* Sections created by the linker. */ | |
2136 | ||
2137 | typedef struct elf_linker_section | |
2138 | { | |
c9a2f333 | 2139 | /* Pointer to the bfd section. */ |
25dbc73a | 2140 | asection *section; |
c9a2f333 AM |
2141 | /* Section name. */ |
2142 | const char *name; | |
2143 | /* Associated bss section name. */ | |
2144 | const char *bss_name; | |
2145 | /* Associated symbol name. */ | |
2146 | const char *sym_name; | |
046183de AM |
2147 | /* Associated symbol. */ |
2148 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2149 | } elf_linker_section_t; |
2150 | ||
2151 | /* Linked list of allocated pointer entries. This hangs off of the | |
2152 | symbol lists, and provides allows us to return different pointers, | |
2153 | based on different addend's. */ | |
2154 | ||
2155 | typedef struct elf_linker_section_pointers | |
2156 | { | |
2157 | /* next allocated pointer for this symbol */ | |
2158 | struct elf_linker_section_pointers *next; | |
2159 | /* offset of pointer from beginning of section */ | |
2160 | bfd_vma offset; | |
2161 | /* addend used */ | |
2162 | bfd_vma addend; | |
2163 | /* which linker section this is */ | |
2164 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2165 | } elf_linker_section_pointers_t; |
2166 | ||
2167 | struct ppc_elf_obj_tdata | |
2168 | { | |
2169 | struct elf_obj_tdata elf; | |
2170 | ||
2171 | /* A mapping from local symbols to offsets into the various linker | |
2172 | sections added. This is index by the symbol index. */ | |
2173 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2174 | |
2175 | /* Flags used to auto-detect plt type. */ | |
2176 | unsigned int makes_plt_call : 1; | |
2177 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2178 | }; |
2179 | ||
2180 | #define ppc_elf_tdata(bfd) \ | |
2181 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2182 | |
25dbc73a AM |
2183 | #define elf_local_ptr_offsets(bfd) \ |
2184 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2185 | |
0c8d6e5c AM |
2186 | #define is_ppc_elf(bfd) \ |
2187 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2188 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2189 | |
25dbc73a | 2190 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2191 | |
25dbc73a AM |
2192 | static bfd_boolean |
2193 | ppc_elf_mkobject (bfd *abfd) | |
2194 | { | |
0ffa91dd | 2195 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2196 | PPC32_ELF_DATA); |
25dbc73a | 2197 | } |
7619e7c7 | 2198 | |
25dbc73a AM |
2199 | /* Fix bad default arch selected for a 32 bit input bfd when the |
2200 | default is 64 bit. */ | |
7619e7c7 | 2201 | |
25dbc73a AM |
2202 | static bfd_boolean |
2203 | ppc_elf_object_p (bfd *abfd) | |
2204 | { | |
2205 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
2206 | { | |
2207 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2208 | |
25dbc73a AM |
2209 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2210 | { | |
2211 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2212 | abfd->arch_info = abfd->arch_info->next; | |
2213 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2214 | } | |
2215 | } | |
2216 | return TRUE; | |
2217 | } | |
7619e7c7 | 2218 | |
25dbc73a | 2219 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2220 | |
25dbc73a AM |
2221 | static bfd_boolean |
2222 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2223 | { | |
2224 | BFD_ASSERT (!elf_flags_init (abfd) | |
2225 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2226 | |
25dbc73a AM |
2227 | elf_elfheader (abfd)->e_flags = flags; |
2228 | elf_flags_init (abfd) = TRUE; | |
2229 | return TRUE; | |
2230 | } | |
2231 | ||
25dbc73a | 2232 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2233 | |
b34976b6 | 2234 | static bfd_boolean |
25dbc73a | 2235 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2236 | { |
25dbc73a AM |
2237 | int offset; |
2238 | unsigned int size; | |
252b5132 | 2239 | |
25dbc73a AM |
2240 | switch (note->descsz) |
2241 | { | |
2242 | default: | |
2243 | return FALSE; | |
252b5132 | 2244 | |
25dbc73a AM |
2245 | case 268: /* Linux/PPC. */ |
2246 | /* pr_cursig */ | |
228e534f | 2247 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2248 | |
25dbc73a | 2249 | /* pr_pid */ |
228e534f | 2250 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2251 | |
25dbc73a AM |
2252 | /* pr_reg */ |
2253 | offset = 72; | |
2254 | size = 192; | |
deaaf2f3 | 2255 | |
25dbc73a AM |
2256 | break; |
2257 | } | |
deaaf2f3 | 2258 | |
25dbc73a AM |
2259 | /* Make a ".reg/999" section. */ |
2260 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2261 | size, note->descpos + offset); | |
2262 | } | |
252b5132 | 2263 | |
25dbc73a AM |
2264 | static bfd_boolean |
2265 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2266 | { | |
2267 | switch (note->descsz) | |
deaaf2f3 | 2268 | { |
25dbc73a AM |
2269 | default: |
2270 | return FALSE; | |
deaaf2f3 | 2271 | |
25dbc73a | 2272 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2273 | elf_tdata (abfd)->core->pid |
bc989cdc | 2274 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2275 | elf_tdata (abfd)->core->program |
25dbc73a | 2276 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2277 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2278 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2279 | } | |
9abc968f | 2280 | |
25dbc73a AM |
2281 | /* Note that for some reason, a spurious space is tacked |
2282 | onto the end of the args in some (at least one anyway) | |
2283 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2284 | |
25dbc73a | 2285 | { |
228e534f | 2286 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2287 | int n = strlen (command); |
70bccea4 | 2288 | |
25dbc73a AM |
2289 | if (0 < n && command[n - 1] == ' ') |
2290 | command[n - 1] = '\0'; | |
2291 | } | |
deaaf2f3 | 2292 | |
25dbc73a AM |
2293 | return TRUE; |
2294 | } | |
deaaf2f3 | 2295 | |
70a38d42 | 2296 | char * |
aeb70569 AM |
2297 | elfcore_write_ppc_linux_prpsinfo32 |
2298 | (bfd *abfd, | |
2299 | char *buf, | |
2300 | int *bufsiz, | |
2301 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
70a38d42 SDJ |
2302 | { |
2303 | struct elf_external_ppc_linux_prpsinfo32 data; | |
2304 | ||
aeb70569 | 2305 | swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data); |
70a38d42 SDJ |
2306 | return elfcore_write_note (abfd, buf, bufsiz, |
2307 | "CORE", NT_PRPSINFO, &data, sizeof (data)); | |
2308 | } | |
2309 | ||
183e98be AM |
2310 | static char * |
2311 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2312 | { | |
2313 | switch (note_type) | |
2314 | { | |
2315 | default: | |
2316 | return NULL; | |
2317 | ||
2318 | case NT_PRPSINFO: | |
2319 | { | |
2320 | char data[128]; | |
2321 | va_list ap; | |
2322 | ||
2323 | va_start (ap, note_type); | |
75cd47ed | 2324 | memset (data, 0, sizeof (data)); |
183e98be AM |
2325 | strncpy (data + 32, va_arg (ap, const char *), 16); |
2326 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
2327 | va_end (ap); | |
2328 | return elfcore_write_note (abfd, buf, bufsiz, | |
2329 | "CORE", note_type, data, sizeof (data)); | |
2330 | } | |
2331 | ||
2332 | case NT_PRSTATUS: | |
2333 | { | |
2334 | char data[268]; | |
2335 | va_list ap; | |
2336 | long pid; | |
2337 | int cursig; | |
2338 | const void *greg; | |
2339 | ||
2340 | va_start (ap, note_type); | |
2341 | memset (data, 0, 72); | |
2342 | pid = va_arg (ap, long); | |
2343 | bfd_put_32 (abfd, pid, data + 24); | |
2344 | cursig = va_arg (ap, int); | |
2345 | bfd_put_16 (abfd, cursig, data + 12); | |
2346 | greg = va_arg (ap, const void *); | |
2347 | memcpy (data + 72, greg, 192); | |
2348 | memset (data + 264, 0, 4); | |
2349 | va_end (ap); | |
2350 | return elfcore_write_note (abfd, buf, bufsiz, | |
2351 | "CORE", note_type, data, sizeof (data)); | |
2352 | } | |
2353 | } | |
2354 | } | |
2355 | ||
b9c361e0 | 2356 | static flagword |
68ffbac6 | 2357 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2358 | { |
2359 | ||
2360 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2361 | return SHF_PPC_VLE; | |
2362 | ||
2363 | return 0; | |
2364 | } | |
2365 | ||
2366 | /* Add the VLE flag if required. */ | |
2367 | ||
2368 | bfd_boolean | |
2369 | ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr) | |
2370 | { | |
2371 | if (bfd_get_mach (abfd) == bfd_mach_ppc_vle | |
2372 | && (shdr->sh_flags & SHF_EXECINSTR) != 0) | |
2373 | shdr->sh_flags |= SHF_PPC_VLE; | |
2374 | ||
2375 | return TRUE; | |
2376 | } | |
2377 | ||
25dbc73a AM |
2378 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2379 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2380 | |
25dbc73a AM |
2381 | static bfd_vma |
2382 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2383 | const asection *plt ATTRIBUTE_UNUSED, | |
2384 | const arelent *rel) | |
2385 | { | |
2386 | return rel->address; | |
2387 | } | |
deaaf2f3 | 2388 | |
25dbc73a | 2389 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2390 | is called when bfd_section_from_shdr finds a section with an unknown |
2391 | type. */ | |
deaaf2f3 | 2392 | |
25dbc73a | 2393 | static bfd_boolean |
6dc132d9 L |
2394 | ppc_elf_section_from_shdr (bfd *abfd, |
2395 | Elf_Internal_Shdr *hdr, | |
2396 | const char *name, | |
2397 | int shindex) | |
25dbc73a AM |
2398 | { |
2399 | asection *newsect; | |
2400 | flagword flags; | |
d1c6de6f | 2401 | |
6dc132d9 | 2402 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2403 | return FALSE; |
deaaf2f3 | 2404 | |
25dbc73a AM |
2405 | newsect = hdr->bfd_section; |
2406 | flags = bfd_get_section_flags (abfd, newsect); | |
2407 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2408 | flags |= SEC_EXCLUDE; | |
9abc968f | 2409 | |
25dbc73a AM |
2410 | if (hdr->sh_type == SHT_ORDERED) |
2411 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2412 | |
25dbc73a AM |
2413 | bfd_set_section_flags (abfd, newsect, flags); |
2414 | return TRUE; | |
2415 | } | |
2416 | ||
2417 | /* Set up any other section flags and such that may be necessary. */ | |
2418 | ||
2419 | static bfd_boolean | |
2420 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2421 | Elf_Internal_Shdr *shdr, | |
2422 | asection *asect) | |
2423 | { | |
25dbc73a AM |
2424 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2425 | shdr->sh_type = SHT_ORDERED; | |
2426 | ||
2427 | return TRUE; | |
2428 | } | |
2429 | ||
2430 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2431 | need to bump up the number of section headers. */ | |
2432 | ||
2433 | static int | |
a6b96beb AM |
2434 | ppc_elf_additional_program_headers (bfd *abfd, |
2435 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2436 | { |
2437 | asection *s; | |
2438 | int ret = 0; | |
d1c6de6f | 2439 | |
25dbc73a AM |
2440 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2441 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2442 | ++ret; | |
d1c6de6f | 2443 | |
25dbc73a AM |
2444 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2445 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2446 | ++ret; | |
deaaf2f3 | 2447 | |
25dbc73a AM |
2448 | return ret; |
2449 | } | |
deaaf2f3 | 2450 | |
68ffbac6 | 2451 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2452 | |
2453 | bfd_boolean | |
2454 | ppc_elf_modify_segment_map (bfd *abfd, | |
2455 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2456 | { | |
2457 | struct elf_segment_map *m, *n; | |
2458 | bfd_size_type amt; | |
2459 | unsigned int j, k; | |
2460 | bfd_boolean sect0_vle, sectj_vle; | |
2461 | ||
2462 | /* At this point in the link, output sections have already been sorted by | |
2463 | LMA and assigned to segments. All that is left to do is to ensure | |
2464 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2465 | If we find that case, we split the segment. | |
2466 | We maintain the original output section order. */ | |
2467 | ||
12bd6957 | 2468 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 JL |
2469 | { |
2470 | if (m->count == 0) | |
2471 | continue; | |
2472 | ||
94caa966 | 2473 | sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0; |
b9c361e0 JL |
2474 | for (j = 1; j < m->count; ++j) |
2475 | { | |
94caa966 AM |
2476 | sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0; |
2477 | ||
2478 | if (sectj_vle != sect0_vle) | |
b9c361e0 JL |
2479 | break; |
2480 | } | |
2481 | if (j >= m->count) | |
2482 | continue; | |
2483 | ||
b9c361e0 JL |
2484 | /* sections 0..j-1 stay in this (current) segment, |
2485 | the remainder are put in a new segment. | |
2486 | The scan resumes with the new segment. */ | |
2487 | ||
2488 | /* Fix the new segment. */ | |
2489 | amt = sizeof (struct elf_segment_map); | |
2490 | amt += (m->count - j - 1) * sizeof (asection *); | |
2491 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2492 | if (n == NULL) | |
2493 | return FALSE; | |
2494 | ||
2495 | n->p_type = PT_LOAD; | |
2496 | n->p_flags = PF_X | PF_R; | |
2497 | if (sectj_vle) | |
2498 | n->p_flags |= PF_PPC_VLE; | |
2499 | n->count = m->count - j; | |
2500 | for (k = 0; k < n->count; ++k) | |
2501 | { | |
2502 | n->sections[k] = m->sections[j+k]; | |
2503 | m->sections[j+k] = NULL; | |
2504 | } | |
2505 | n->next = m->next; | |
2506 | m->next = n; | |
2507 | ||
2508 | /* Fix the current segment */ | |
2509 | m->count = j; | |
2510 | } | |
2511 | ||
2512 | return TRUE; | |
2513 | } | |
2514 | ||
25dbc73a AM |
2515 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2516 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2517 | that the linker doesn't crater when trying to make more than | |
2518 | 2 sections. */ | |
e656e369 | 2519 | |
b35d266b | 2520 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2521 | { |
0112cd26 NC |
2522 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2523 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2524 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2525 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2526 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2527 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2528 | { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 }, | |
2529 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2530 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2531 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2532 | }; |
2533 | ||
551b43fd AM |
2534 | /* This is what we want for new plt/got. */ |
2535 | static struct bfd_elf_special_section ppc_alt_plt = | |
0112cd26 | 2536 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2537 | |
2538 | static const struct bfd_elf_special_section * | |
2539 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 2540 | { |
b35d266b | 2541 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2542 | |
2543 | /* See if this is one of the special sections. */ | |
2544 | if (sec->name == NULL) | |
2545 | return NULL; | |
2546 | ||
2547 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2548 | sec->use_rela_p); | |
2549 | if (ssect != NULL) | |
2550 | { | |
2551 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2552 | ssect = &ppc_alt_plt; | |
2553 | return ssect; | |
2554 | } | |
2555 | ||
2556 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2557 | } | |
25dbc73a AM |
2558 | \f |
2559 | /* Very simple linked list structure for recording apuinfo values. */ | |
2560 | typedef struct apuinfo_list | |
2561 | { | |
2562 | struct apuinfo_list *next; | |
2563 | unsigned long value; | |
2564 | } | |
2565 | apuinfo_list; | |
e656e369 | 2566 | |
25dbc73a | 2567 | static apuinfo_list *head; |
f2faa800 | 2568 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2569 | |
25dbc73a AM |
2570 | static void |
2571 | apuinfo_list_init (void) | |
2572 | { | |
2573 | head = NULL; | |
f2faa800 | 2574 | apuinfo_set = FALSE; |
25dbc73a | 2575 | } |
9abc968f | 2576 | |
25dbc73a AM |
2577 | static void |
2578 | apuinfo_list_add (unsigned long value) | |
2579 | { | |
2580 | apuinfo_list *entry = head; | |
deaaf2f3 | 2581 | |
25dbc73a AM |
2582 | while (entry != NULL) |
2583 | { | |
2584 | if (entry->value == value) | |
2585 | return; | |
2586 | entry = entry->next; | |
2587 | } | |
b4a38de6 | 2588 | |
25dbc73a AM |
2589 | entry = bfd_malloc (sizeof (* entry)); |
2590 | if (entry == NULL) | |
2591 | return; | |
e656e369 | 2592 | |
25dbc73a AM |
2593 | entry->value = value; |
2594 | entry->next = head; | |
2595 | head = entry; | |
2596 | } | |
9abc968f | 2597 | |
25dbc73a AM |
2598 | static unsigned |
2599 | apuinfo_list_length (void) | |
2600 | { | |
2601 | apuinfo_list *entry; | |
2602 | unsigned long count; | |
9abc968f | 2603 | |
25dbc73a AM |
2604 | for (entry = head, count = 0; |
2605 | entry; | |
2606 | entry = entry->next) | |
2607 | ++ count; | |
e656e369 | 2608 | |
25dbc73a AM |
2609 | return count; |
2610 | } | |
eea6121a | 2611 | |
25dbc73a AM |
2612 | static inline unsigned long |
2613 | apuinfo_list_element (unsigned long number) | |
2614 | { | |
2615 | apuinfo_list * entry; | |
e656e369 | 2616 | |
25dbc73a AM |
2617 | for (entry = head; |
2618 | entry && number --; | |
2619 | entry = entry->next) | |
2620 | ; | |
252b5132 | 2621 | |
25dbc73a AM |
2622 | return entry ? entry->value : 0; |
2623 | } | |
2624 | ||
2625 | static void | |
2626 | apuinfo_list_finish (void) | |
2627 | { | |
2628 | apuinfo_list *entry; | |
2629 | ||
2630 | for (entry = head; entry;) | |
252b5132 | 2631 | { |
25dbc73a AM |
2632 | apuinfo_list *next = entry->next; |
2633 | free (entry); | |
2634 | entry = next; | |
2635 | } | |
9abc968f | 2636 | |
25dbc73a AM |
2637 | head = NULL; |
2638 | } | |
9abc968f | 2639 | |
25dbc73a AM |
2640 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2641 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2642 | |
25dbc73a AM |
2643 | /* Scan the input BFDs and create a linked list of |
2644 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2645 | |
25dbc73a AM |
2646 | static void |
2647 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2648 | { | |
2649 | bfd *ibfd; | |
2650 | asection *asec; | |
deddc40b NS |
2651 | char *buffer = NULL; |
2652 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2653 | unsigned i; |
25dbc73a AM |
2654 | unsigned long length; |
2655 | const char *error_message = NULL; | |
9abc968f | 2656 | |
25dbc73a AM |
2657 | if (link_info == NULL) |
2658 | return; | |
9abc968f | 2659 | |
25dbc73a | 2660 | apuinfo_list_init (); |
252b5132 | 2661 | |
25dbc73a | 2662 | /* Read in the input sections contents. */ |
c72f2fb2 | 2663 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2664 | { |
25dbc73a | 2665 | unsigned long datum; |
252b5132 | 2666 | |
25dbc73a AM |
2667 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2668 | if (asec == NULL) | |
2669 | continue; | |
252b5132 | 2670 | |
deddc40b | 2671 | error_message = _("corrupt %s section in %B"); |
25dbc73a | 2672 | length = asec->size; |
deddc40b NS |
2673 | if (length < 20) |
2674 | goto fail; | |
2675 | ||
f2faa800 | 2676 | apuinfo_set = TRUE; |
deddc40b | 2677 | if (largest_input_size < asec->size) |
25dbc73a | 2678 | { |
deddc40b NS |
2679 | if (buffer) |
2680 | free (buffer); | |
2681 | largest_input_size = asec->size; | |
2682 | buffer = bfd_malloc (largest_input_size); | |
2683 | if (!buffer) | |
2684 | return; | |
25dbc73a | 2685 | } |
5b914448 | 2686 | |
25dbc73a | 2687 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2688 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a AM |
2689 | { |
2690 | error_message = _("unable to read in %s section from %B"); | |
2691 | goto fail; | |
2692 | } | |
252b5132 | 2693 | |
25dbc73a AM |
2694 | /* Verify the contents of the header. Note - we have to |
2695 | extract the values this way in order to allow for a | |
2696 | host whose endian-ness is different from the target. */ | |
deddc40b | 2697 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2698 | if (datum != sizeof APUINFO_LABEL) |
2699 | goto fail; | |
252b5132 | 2700 | |
deddc40b | 2701 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2702 | if (datum != 0x2) |
2703 | goto fail; | |
252b5132 | 2704 | |
deddc40b | 2705 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2706 | goto fail; |
252b5132 | 2707 | |
25dbc73a | 2708 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2709 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2710 | if (datum + 20 != length) |
2711 | goto fail; | |
2712 | ||
25dbc73a AM |
2713 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2714 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2715 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2716 | } |
2717 | ||
25dbc73a | 2718 | error_message = NULL; |
252b5132 | 2719 | |
f2faa800 | 2720 | if (apuinfo_set) |
deddc40b | 2721 | { |
f2faa800 NS |
2722 | /* Compute the size of the output section. */ |
2723 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2724 | |
deddc40b NS |
2725 | /* Set the output section size, if it exists. */ |
2726 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2727 | |
deddc40b NS |
2728 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2729 | { | |
2730 | ibfd = abfd; | |
2731 | error_message = _("warning: unable to set size of %s section in %B"); | |
2732 | } | |
2733 | } | |
25dbc73a AM |
2734 | |
2735 | fail: | |
deddc40b NS |
2736 | if (buffer) |
2737 | free (buffer); | |
25dbc73a AM |
2738 | |
2739 | if (error_message) | |
2740 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2741 | } | |
252b5132 | 2742 | |
25dbc73a AM |
2743 | /* Prevent the output section from accumulating the input sections' |
2744 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2745 | |
25dbc73a AM |
2746 | static bfd_boolean |
2747 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2748 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2749 | asection *asec, |
2750 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2751 | { | |
f2faa800 | 2752 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2753 | } |
2754 | ||
25dbc73a AM |
2755 | /* Finally we can generate the output section. */ |
2756 | ||
2757 | static void | |
2758 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2759 | { |
25dbc73a AM |
2760 | bfd_byte *buffer; |
2761 | asection *asec; | |
2762 | unsigned i; | |
2763 | unsigned num_entries; | |
2764 | bfd_size_type length; | |
7619e7c7 | 2765 | |
25dbc73a AM |
2766 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2767 | if (asec == NULL) | |
2768 | return; | |
2769 | ||
f2faa800 | 2770 | if (!apuinfo_set) |
25dbc73a AM |
2771 | return; |
2772 | ||
2773 | length = asec->size; | |
2774 | if (length < 20) | |
2775 | return; | |
2776 | ||
2777 | buffer = bfd_malloc (length); | |
2778 | if (buffer == NULL) | |
7619e7c7 | 2779 | { |
25dbc73a AM |
2780 | (*_bfd_error_handler) |
2781 | (_("failed to allocate space for new APUinfo section.")); | |
2782 | return; | |
7619e7c7 | 2783 | } |
7619e7c7 | 2784 | |
25dbc73a AM |
2785 | /* Create the apuinfo header. */ |
2786 | num_entries = apuinfo_list_length (); | |
2787 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2788 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2789 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2790 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2791 | |
25dbc73a AM |
2792 | length = 20; |
2793 | for (i = 0; i < num_entries; i++) | |
feee612b | 2794 | { |
25dbc73a AM |
2795 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2796 | length += 4; | |
feee612b | 2797 | } |
feee612b | 2798 | |
25dbc73a AM |
2799 | if (length != asec->size) |
2800 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2801 | |
25dbc73a AM |
2802 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2803 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2804 | |
25dbc73a AM |
2805 | free (buffer); |
2806 | ||
2807 | apuinfo_list_finish (); | |
252b5132 | 2808 | } |
25dbc73a | 2809 | \f |
7382d32a | 2810 | static bfd_boolean |
c6dd29ce | 2811 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2812 | { |
c6dd29ce | 2813 | bfd_byte buf[GLINK_ENTRY_SIZE]; |
7382d32a | 2814 | |
c6dd29ce | 2815 | if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE)) |
7382d32a AM |
2816 | return FALSE; |
2817 | ||
c6dd29ce AM |
2818 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2819 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
2820 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 | |
2821 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2822 | } |
2823 | ||
468392fb AM |
2824 | static bfd_boolean |
2825 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2826 | { | |
2827 | bfd_vma vma = *(bfd_vma *) ptr; | |
2828 | return ((section->flags & SEC_ALLOC) != 0 | |
2829 | && section->vma <= vma | |
2830 | && vma < section->vma + section->size); | |
2831 | } | |
2832 | ||
2833 | static long | |
2834 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2835 | long dynsymcount, asymbol **dynsyms, | |
2836 | asymbol **ret) | |
2837 | { | |
2838 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2839 | asection *plt, *relplt, *dynamic, *glink; | |
2840 | bfd_vma glink_vma = 0; | |
2841 | bfd_vma resolv_vma = 0; | |
2842 | bfd_vma stub_vma; | |
2843 | asymbol *s; | |
2844 | arelent *p; | |
2845 | long count, i; | |
2846 | size_t size; | |
2847 | char *names; | |
2848 | bfd_byte buf[4]; | |
2849 | ||
2850 | *ret = NULL; | |
2851 | ||
2852 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2853 | return 0; | |
2854 | ||
2855 | if (dynsymcount <= 0) | |
2856 | return 0; | |
2857 | ||
2858 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2859 | if (relplt == NULL) | |
2860 | return 0; | |
2861 | ||
2862 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2863 | if (plt == NULL) | |
2864 | return 0; | |
2865 | ||
2866 | /* Call common code to handle old-style executable PLTs. */ | |
2867 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2868 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2869 | dynsymcount, dynsyms, ret); | |
2870 | ||
2871 | /* If this object was prelinked, the prelinker stored the address | |
2872 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2873 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2874 | if (dynamic != NULL) | |
2875 | { | |
2876 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2877 | size_t extdynsize; | |
2878 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2879 | ||
2880 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2881 | return -1; | |
2882 | ||
2883 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2884 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2885 | ||
2886 | extdyn = dynbuf; | |
2887 | extdynend = extdyn + dynamic->size; | |
2888 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2889 | { | |
2890 | Elf_Internal_Dyn dyn; | |
2891 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2892 | ||
2893 | if (dyn.d_tag == DT_NULL) | |
2894 | break; | |
2895 | ||
2896 | if (dyn.d_tag == DT_PPC_GOT) | |
2897 | { | |
2898 | unsigned int g_o_t = dyn.d_un.d_val; | |
2899 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2900 | if (got != NULL | |
2901 | && bfd_get_section_contents (abfd, got, buf, | |
2902 | g_o_t - got->vma + 4, 4)) | |
2903 | glink_vma = bfd_get_32 (abfd, buf); | |
2904 | break; | |
2905 | } | |
2906 | } | |
2907 | free (dynbuf); | |
2908 | } | |
2909 | ||
2910 | /* Otherwise we read the first plt entry. */ | |
2911 | if (glink_vma == 0) | |
2912 | { | |
2913 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2914 | glink_vma = bfd_get_32 (abfd, buf); | |
2915 | } | |
2916 | ||
2917 | if (glink_vma == 0) | |
2918 | return 0; | |
2919 | ||
2920 | /* The .glink section usually does not survive the final | |
2921 | link; search for the section (usually .text) where the | |
2922 | glink stubs now reside. */ | |
2923 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2924 | if (glink == NULL) | |
2925 | return 0; | |
2926 | ||
2927 | /* Determine glink PLT resolver by reading the relative branch | |
2928 | from the first glink stub. */ | |
2929 | if (bfd_get_section_contents (abfd, glink, buf, | |
2930 | glink_vma - glink->vma, 4)) | |
2931 | { | |
2932 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2933 | ||
2934 | /* The first glink stub may either branch to the resolver ... */ | |
2935 | insn ^= B; | |
2936 | if ((insn & ~0x3fffffc) == 0) | |
2937 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
2938 | ||
2939 | /* ... or fall through a bunch of NOPs. */ | |
2940 | else if ((insn ^ B ^ NOP) == 0) | |
2941 | for (i = 4; | |
2942 | bfd_get_section_contents (abfd, glink, buf, | |
2943 | glink_vma - glink->vma + i, 4); | |
2944 | i += 4) | |
2945 | if (bfd_get_32 (abfd, buf) != NOP) | |
2946 | { | |
2947 | resolv_vma = glink_vma + i; | |
2948 | break; | |
2949 | } | |
2950 | } | |
2951 | ||
7382d32a | 2952 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
2953 | /* If the stubs are those for -shared/-pie then we might have |
2954 | multiple stubs for each plt entry. If that is the case then | |
2955 | there is no way to associate stubs with their plt entries short | |
2956 | of figuring out the GOT pointer value used in the stub. */ | |
c6dd29ce AM |
2957 | if (!is_nonpic_glink_stub (abfd, glink, |
2958 | glink_vma - GLINK_ENTRY_SIZE - glink->vma)) | |
7382d32a AM |
2959 | return 0; |
2960 | ||
468392fb AM |
2961 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
2962 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
2963 | return -1; | |
2964 | ||
468392fb AM |
2965 | size = count * sizeof (asymbol); |
2966 | p = relplt->relocation; | |
2967 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
2968 | { |
2969 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2970 | if (p->addend != 0) | |
2971 | size += sizeof ("+0x") - 1 + 8; | |
2972 | } | |
468392fb AM |
2973 | |
2974 | size += sizeof (asymbol) + sizeof ("__glink"); | |
2975 | ||
2976 | if (resolv_vma) | |
2977 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
2978 | ||
2979 | s = *ret = bfd_malloc (size); | |
2980 | if (s == NULL) | |
2981 | return -1; | |
2982 | ||
1079403c | 2983 | stub_vma = glink_vma; |
468392fb | 2984 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
2985 | p = relplt->relocation + count - 1; |
2986 | for (i = 0; i < count; i++) | |
468392fb AM |
2987 | { |
2988 | size_t len; | |
2989 | ||
2990 | *s = **p->sym_ptr_ptr; | |
2991 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2992 | we are defining a symbol, ensure one of them is set. */ | |
2993 | if ((s->flags & BSF_LOCAL) == 0) | |
2994 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2995 | s->flags |= BSF_SYNTHETIC; |
468392fb | 2996 | s->section = glink; |
1079403c AM |
2997 | stub_vma -= 16; |
2998 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
2999 | stub_vma -= 32; | |
468392fb AM |
3000 | s->value = stub_vma - glink->vma; |
3001 | s->name = names; | |
3002 | s->udata.p = NULL; | |
3003 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3004 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3005 | names += len; | |
e054468f AM |
3006 | if (p->addend != 0) |
3007 | { | |
3008 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3009 | names += sizeof ("+0x") - 1; | |
3010 | bfd_sprintf_vma (abfd, names, p->addend); | |
3011 | names += strlen (names); | |
3012 | } | |
468392fb AM |
3013 | memcpy (names, "@plt", sizeof ("@plt")); |
3014 | names += sizeof ("@plt"); | |
3015 | ++s; | |
1079403c | 3016 | --p; |
468392fb AM |
3017 | } |
3018 | ||
3019 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 3020 | memset (s, 0, sizeof *s); |
468392fb | 3021 | s->the_bfd = abfd; |
6ba2a415 | 3022 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3023 | s->section = glink; |
3024 | s->value = glink_vma - glink->vma; | |
3025 | s->name = names; | |
3026 | memcpy (names, "__glink", sizeof ("__glink")); | |
3027 | names += sizeof ("__glink"); | |
3028 | s++; | |
3029 | count++; | |
3030 | ||
3031 | if (resolv_vma) | |
3032 | { | |
3033 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3034 | memset (s, 0, sizeof *s); |
468392fb | 3035 | s->the_bfd = abfd; |
6ba2a415 | 3036 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3037 | s->section = glink; |
3038 | s->value = resolv_vma - glink->vma; | |
3039 | s->name = names; | |
3040 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3041 | names += sizeof ("__glink_PLTresolve"); | |
3042 | s++; | |
3043 | count++; | |
3044 | } | |
3045 | ||
3046 | return count; | |
3047 | } | |
3048 | \f | |
25dbc73a AM |
3049 | /* The following functions are specific to the ELF linker, while |
3050 | functions above are used generally. They appear in this file more | |
3051 | or less in the order in which they are called. eg. | |
3052 | ppc_elf_check_relocs is called early in the link process, | |
3053 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3054 | called. */ | |
252b5132 | 3055 | |
a6aa5195 | 3056 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3057 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3058 | struct plt_entry |
3059 | { | |
3060 | struct plt_entry *next; | |
3061 | ||
3062 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3063 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3064 | GOT pointer reg. It will always be at least 32768. (Current |
3065 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3066 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3067 | bfd_vma addend; |
3068 | ||
3069 | /* The .got2 section. */ | |
3070 | asection *sec; | |
3071 | ||
3072 | /* PLT refcount or offset. */ | |
3073 | union | |
3074 | { | |
3075 | bfd_signed_vma refcount; | |
3076 | bfd_vma offset; | |
3077 | } plt; | |
3078 | ||
3079 | /* .glink stub offset. */ | |
3080 | bfd_vma glink_offset; | |
3081 | }; | |
3082 | ||
1d483afe | 3083 | /* Of those relocs that might be copied as dynamic relocs, this function |
25dbc73a AM |
3084 | selects those that must be copied when linking a shared library, |
3085 | even when the symbol is local. */ | |
252b5132 | 3086 | |
1d483afe AM |
3087 | static int |
3088 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3089 | enum elf_ppc_reloc_type r_type) | |
3090 | { | |
3091 | switch (r_type) | |
3092 | { | |
3093 | default: | |
3094 | return 1; | |
3095 | ||
3096 | case R_PPC_REL24: | |
3097 | case R_PPC_REL14: | |
3098 | case R_PPC_REL14_BRTAKEN: | |
3099 | case R_PPC_REL14_BRNTAKEN: | |
3100 | case R_PPC_REL32: | |
3101 | return 0; | |
3102 | ||
3103 | case R_PPC_TPREL32: | |
3104 | case R_PPC_TPREL16: | |
3105 | case R_PPC_TPREL16_LO: | |
3106 | case R_PPC_TPREL16_HI: | |
3107 | case R_PPC_TPREL16_HA: | |
0e1862bb | 3108 | return !bfd_link_executable (info); |
1d483afe AM |
3109 | } |
3110 | } | |
252b5132 | 3111 | |
25dbc73a AM |
3112 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3113 | copying dynamic variables from a shared lib into an app's dynbss | |
3114 | section, and instead use a dynamic relocation to point into the | |
3115 | shared lib. */ | |
3116 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3117 | |
f95f8542 AM |
3118 | /* Used to track dynamic relocations for local symbols. */ |
3119 | struct ppc_dyn_relocs | |
3120 | { | |
3121 | struct ppc_dyn_relocs *next; | |
3122 | ||
3123 | /* The input section of the reloc. */ | |
3124 | asection *sec; | |
3125 | ||
3126 | /* Total number of relocs copied for the input section. */ | |
3127 | unsigned int count : 31; | |
3128 | ||
3129 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3130 | unsigned int ifunc : 1; | |
3131 | }; | |
3132 | ||
25dbc73a | 3133 | /* PPC ELF linker hash entry. */ |
252b5132 | 3134 | |
25dbc73a AM |
3135 | struct ppc_elf_link_hash_entry |
3136 | { | |
3137 | struct elf_link_hash_entry elf; | |
252b5132 | 3138 | |
25dbc73a AM |
3139 | /* If this symbol is used in the linker created sections, the processor |
3140 | specific backend uses this field to map the field into the offset | |
3141 | from the beginning of the section. */ | |
3142 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3143 | |
25dbc73a | 3144 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3145 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3146 | |
25dbc73a AM |
3147 | /* Contexts in which symbol is used in the GOT (or TOC). |
3148 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
3149 | corresponding relocs are encountered during check_relocs. | |
3150 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3151 | indicate the corresponding GOT entry type is not needed. */ | |
3152 | #define TLS_GD 1 /* GD reloc. */ | |
3153 | #define TLS_LD 2 /* LD reloc. */ | |
3154 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3155 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3156 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3157 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3158 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 3159 | char tls_mask; |
4dc4a9a5 DJ |
3160 | |
3161 | /* Nonzero if we have seen a small data relocation referring to this | |
3162 | symbol. */ | |
d3e454b9 AM |
3163 | unsigned char has_sda_refs : 1; |
3164 | ||
3165 | /* Flag use of given relocations. */ | |
3166 | unsigned char has_addr16_ha : 1; | |
3167 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 3168 | }; |
252b5132 | 3169 | |
25dbc73a AM |
3170 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3171 | ||
3172 | /* PPC ELF linker hash table. */ | |
3173 | ||
3174 | struct ppc_elf_link_hash_table | |
3175 | { | |
3176 | struct elf_link_hash_table elf; | |
3177 | ||
5446cbdf AM |
3178 | /* Various options passed from the linker. */ |
3179 | struct ppc_elf_params *params; | |
3180 | ||
25dbc73a AM |
3181 | /* Short-cuts to get to dynamic linker sections. */ |
3182 | asection *got; | |
3183 | asection *relgot; | |
d7128ce4 | 3184 | asection *glink; |
25dbc73a AM |
3185 | asection *plt; |
3186 | asection *relplt; | |
e054468f AM |
3187 | asection *iplt; |
3188 | asection *reliplt; | |
25dbc73a AM |
3189 | asection *dynbss; |
3190 | asection *relbss; | |
3191 | asection *dynsbss; | |
3192 | asection *relsbss; | |
c9a2f333 | 3193 | elf_linker_section_t sdata[2]; |
25dbc73a | 3194 | asection *sbss; |
6177242a | 3195 | asection *glink_eh_frame; |
25dbc73a | 3196 | |
016687f8 AM |
3197 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3198 | asection *srelplt2; | |
3199 | ||
3200 | /* The .got.plt section (VxWorks only)*/ | |
3201 | asection *sgotplt; | |
3202 | ||
1d483afe | 3203 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3204 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3205 | |
016687f8 AM |
3206 | /* The bfd that forced an old-style PLT. */ |
3207 | bfd *old_bfd; | |
5b914448 | 3208 | |
25dbc73a AM |
3209 | /* TLS local dynamic got entry handling. */ |
3210 | union { | |
3211 | bfd_signed_vma refcount; | |
3212 | bfd_vma offset; | |
3213 | } tlsld_got; | |
252b5132 | 3214 | |
c6dd29ce | 3215 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3216 | bfd_vma glink_pltresolve; |
3217 | ||
3b36f7e6 AM |
3218 | /* Size of reserved GOT entries. */ |
3219 | unsigned int got_header_size; | |
3220 | /* Non-zero if allocating the header left a gap. */ | |
3221 | unsigned int got_gap; | |
3222 | ||
4a3dc543 RS |
3223 | /* The type of PLT we have chosen to use. */ |
3224 | enum ppc_elf_plt_type plt_type; | |
3225 | ||
9d8504b1 | 3226 | /* True if the target system is VxWorks. */ |
016687f8 | 3227 | unsigned int is_vxworks:1; |
9d8504b1 PB |
3228 | |
3229 | /* The size of PLT entries. */ | |
3230 | int plt_entry_size; | |
3231 | /* The distance between adjacent PLT slots. */ | |
3232 | int plt_slot_size; | |
3233 | /* The size of the first PLT entry. */ | |
3234 | int plt_initial_entry_size; | |
016687f8 | 3235 | |
87d72d41 AM |
3236 | /* Small local sym cache. */ |
3237 | struct sym_cache sym_cache; | |
25dbc73a | 3238 | }; |
252b5132 | 3239 | |
94caa966 AM |
3240 | /* Rename some of the generic section flags to better document how they |
3241 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3242 | ||
3243 | /* Nonzero if this section has TLS related relocations. */ | |
3244 | #define has_tls_reloc sec_flg0 | |
3245 | ||
3246 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3247 | #define has_tls_get_addr_call sec_flg1 | |
3248 | ||
25dbc73a | 3249 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3250 | |
25dbc73a | 3251 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3252 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3253 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3254 | |
25dbc73a | 3255 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3256 | |
25dbc73a AM |
3257 | static struct bfd_hash_entry * |
3258 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3259 | struct bfd_hash_table *table, | |
3260 | const char *string) | |
252b5132 | 3261 | { |
25dbc73a AM |
3262 | /* Allocate the structure if it has not already been allocated by a |
3263 | subclass. */ | |
3264 | if (entry == NULL) | |
3265 | { | |
3266 | entry = bfd_hash_allocate (table, | |
3267 | sizeof (struct ppc_elf_link_hash_entry)); | |
3268 | if (entry == NULL) | |
3269 | return entry; | |
3270 | } | |
252b5132 | 3271 | |
25dbc73a AM |
3272 | /* Call the allocation method of the superclass. */ |
3273 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3274 | if (entry != NULL) | |
3275 | { | |
3276 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3277 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3278 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3279 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3280 | } |
252b5132 | 3281 | |
25dbc73a | 3282 | return entry; |
252b5132 | 3283 | } |
3dab13f6 | 3284 | |
25dbc73a | 3285 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3286 | |
25dbc73a AM |
3287 | static struct bfd_link_hash_table * |
3288 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3289 | { |
25dbc73a | 3290 | struct ppc_elf_link_hash_table *ret; |
d3e454b9 | 3291 | static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12, 0 }; |
3dab13f6 | 3292 | |
25dbc73a AM |
3293 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3294 | if (ret == NULL) | |
3295 | return NULL; | |
3dab13f6 | 3296 | |
66eb6687 AM |
3297 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3298 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3299 | sizeof (struct ppc_elf_link_hash_entry), |
3300 | PPC32_ELF_DATA)) | |
3dab13f6 | 3301 | { |
25dbc73a AM |
3302 | free (ret); |
3303 | return NULL; | |
3304 | } | |
58111eb7 | 3305 | |
a6aa5195 AM |
3306 | ret->elf.init_plt_refcount.refcount = 0; |
3307 | ret->elf.init_plt_refcount.glist = NULL; | |
3308 | ret->elf.init_plt_offset.offset = 0; | |
3309 | ret->elf.init_plt_offset.glist = NULL; | |
3310 | ||
db434ba0 AM |
3311 | ret->params = &default_params; |
3312 | ||
c9a2f333 AM |
3313 | ret->sdata[0].name = ".sdata"; |
3314 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3315 | ret->sdata[0].bss_name = ".sbss"; | |
3316 | ||
3317 | ret->sdata[1].name = ".sdata2"; | |
3318 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3319 | ret->sdata[1].bss_name = ".sbss2"; | |
3320 | ||
9d8504b1 PB |
3321 | ret->plt_entry_size = 12; |
3322 | ret->plt_slot_size = 8; | |
3323 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3324 | |
25dbc73a AM |
3325 | return &ret->elf.root; |
3326 | } | |
3dab13f6 | 3327 | |
5446cbdf AM |
3328 | /* Hook linker params into hash table. */ |
3329 | ||
3330 | void | |
3331 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3332 | { | |
3333 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3334 | ||
3335 | if (htab) | |
3336 | htab->params = params; | |
3337 | } | |
3338 | ||
9d8504b1 | 3339 | /* Create .got and the related sections. */ |
3dab13f6 | 3340 | |
25dbc73a AM |
3341 | static bfd_boolean |
3342 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3343 | { | |
3344 | struct ppc_elf_link_hash_table *htab; | |
3345 | asection *s; | |
3346 | flagword flags; | |
3dab13f6 | 3347 | |
25dbc73a AM |
3348 | if (!_bfd_elf_create_got_section (abfd, info)) |
3349 | return FALSE; | |
3dab13f6 | 3350 | |
25dbc73a | 3351 | htab = ppc_elf_hash_table (info); |
3d4d4302 | 3352 | htab->got = s = bfd_get_linker_section (abfd, ".got"); |
25dbc73a AM |
3353 | if (s == NULL) |
3354 | abort (); | |
3dab13f6 | 3355 | |
9d8504b1 PB |
3356 | if (htab->is_vxworks) |
3357 | { | |
3d4d4302 | 3358 | htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt"); |
9d8504b1 PB |
3359 | if (!htab->sgotplt) |
3360 | abort (); | |
3361 | } | |
3362 | else | |
3363 | { | |
3364 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3365 | executable. */ | |
3366 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
3367 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3368 | if (!bfd_set_section_flags (abfd, s, flags)) | |
3369 | return FALSE; | |
3370 | } | |
3dab13f6 | 3371 | |
3d4d4302 | 3372 | htab->relgot = bfd_get_linker_section (abfd, ".rela.got"); |
64e77c6d L |
3373 | if (!htab->relgot) |
3374 | abort (); | |
3dab13f6 | 3375 | |
25dbc73a AM |
3376 | return TRUE; |
3377 | } | |
3dab13f6 | 3378 | |
93d1b056 AM |
3379 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3380 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3381 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3382 | ||
3383 | static bfd_boolean | |
3384 | ppc_elf_create_linker_section (bfd *abfd, | |
3385 | struct bfd_link_info *info, | |
3386 | flagword flags, | |
3387 | elf_linker_section_t *lsect) | |
3388 | { | |
3389 | asection *s; | |
3390 | ||
3391 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3392 | | SEC_LINKER_CREATED); | |
3393 | ||
3394 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3395 | if (s == NULL) | |
3396 | return FALSE; | |
3397 | lsect->section = s; | |
3398 | ||
3399 | /* Define the sym on the first section of this name. */ | |
3400 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3401 | ||
3402 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3403 | if (lsect->sym == NULL) | |
3404 | return FALSE; | |
3405 | lsect->sym->root.u.def.value = 0x8000; | |
3406 | return TRUE; | |
3407 | } | |
3408 | ||
e054468f AM |
3409 | static bfd_boolean |
3410 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3411 | { | |
3412 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3413 | asection *s; | |
3414 | flagword flags; | |
3415 | ||
3416 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
3417 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3418 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
3419 | htab->glink = s; | |
3420 | if (s == NULL | |
5446cbdf AM |
3421 | || !bfd_set_section_alignment (abfd, s, |
3422 | htab->params->ppc476_workaround ? 6 : 4)) | |
e054468f AM |
3423 | return FALSE; |
3424 | ||
6177242a AM |
3425 | if (!info->no_ld_generated_unwind_info) |
3426 | { | |
3427 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3428 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3429 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3430 | htab->glink_eh_frame = s; | |
3431 | if (s == NULL | |
3432 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3433 | return FALSE; | |
3434 | } | |
3435 | ||
e054468f AM |
3436 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3437 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
3438 | htab->iplt = s; | |
3439 | if (s == NULL | |
3440 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3441 | return FALSE; | |
3442 | ||
3443 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3444 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3445 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
e054468f AM |
3446 | htab->reliplt = s; |
3447 | if (s == NULL | |
3448 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3449 | return FALSE; | |
93d1b056 AM |
3450 | |
3451 | if (!ppc_elf_create_linker_section (abfd, info, 0, | |
3452 | &htab->sdata[0])) | |
3453 | return FALSE; | |
3454 | ||
3455 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3456 | &htab->sdata[1])) | |
3457 | return FALSE; | |
3458 | ||
e054468f AM |
3459 | return TRUE; |
3460 | } | |
3461 | ||
25dbc73a AM |
3462 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3463 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3464 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3465 | |
25dbc73a AM |
3466 | static bfd_boolean |
3467 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3468 | { | |
3469 | struct ppc_elf_link_hash_table *htab; | |
3470 | asection *s; | |
3471 | flagword flags; | |
3dab13f6 | 3472 | |
25dbc73a | 3473 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3474 | |
25dbc73a AM |
3475 | if (htab->got == NULL |
3476 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
3477 | return FALSE; |
3478 | ||
25dbc73a AM |
3479 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3480 | return FALSE; | |
3dab13f6 | 3481 | |
e054468f AM |
3482 | if (htab->glink == NULL |
3483 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3484 | return FALSE; |
3dab13f6 | 3485 | |
3d4d4302 | 3486 | htab->dynbss = bfd_get_linker_section (abfd, ".dynbss"); |
14b2f831 AM |
3487 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3488 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3489 | htab->dynsbss = s; |
3496cb2a | 3490 | if (s == NULL) |
25dbc73a | 3491 | return FALSE; |
3dab13f6 | 3492 | |
0e1862bb | 3493 | if (! bfd_link_pic (info)) |
25dbc73a | 3494 | { |
3d4d4302 | 3495 | htab->relbss = bfd_get_linker_section (abfd, ".rela.bss"); |
e054468f AM |
3496 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3497 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3498 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3499 | htab->relsbss = s; |
25dbc73a | 3500 | if (s == NULL |
25dbc73a AM |
3501 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3502 | return FALSE; | |
3503 | } | |
3dab13f6 | 3504 | |
711de32c RS |
3505 | if (htab->is_vxworks |
3506 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3507 | return FALSE; | |
9d8504b1 | 3508 | |
3d4d4302 AM |
3509 | htab->relplt = bfd_get_linker_section (abfd, ".rela.plt"); |
3510 | htab->plt = s = bfd_get_linker_section (abfd, ".plt"); | |
25dbc73a AM |
3511 | if (s == NULL) |
3512 | abort (); | |
3dab13f6 | 3513 | |
3b36f7e6 | 3514 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3515 | if (htab->plt_type == PLT_VXWORKS) |
3516 | /* The VxWorks PLT is a loaded section with contents. */ | |
3517 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3518 | return bfd_set_section_flags (abfd, s, flags); |
3519 | } | |
3dab13f6 | 3520 | |
25dbc73a | 3521 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3522 | |
25dbc73a | 3523 | static void |
fcfa13d2 | 3524 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3525 | struct elf_link_hash_entry *dir, |
3526 | struct elf_link_hash_entry *ind) | |
3527 | { | |
3528 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3529 | |
25dbc73a AM |
3530 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3531 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3532 | |
c79d6685 AM |
3533 | edir->tls_mask |= eind->tls_mask; |
3534 | edir->has_sda_refs |= eind->has_sda_refs; | |
3535 | ||
3536 | /* If called to transfer flags for a weakdef during processing | |
3537 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
3538 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3539 | if (!(ELIMINATE_COPY_RELOCS | |
3540 | && eind->elf.root.type != bfd_link_hash_indirect | |
3541 | && edir->elf.dynamic_adjusted)) | |
3542 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
3543 | ||
3544 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
3545 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3546 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3547 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
3548 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3549 | ||
25dbc73a AM |
3550 | if (eind->dyn_relocs != NULL) |
3551 | { | |
3552 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3553 | { |
6061a67d AM |
3554 | struct elf_dyn_relocs **pp; |
3555 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3556 | |
fcfa13d2 | 3557 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3558 | list. Merge any entries against the same section. */ |
3559 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3560 | { |
6061a67d | 3561 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3562 | |
3563 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3564 | if (q->sec == p->sec) | |
3565 | { | |
3566 | q->pc_count += p->pc_count; | |
3567 | q->count += p->count; | |
3568 | *pp = p->next; | |
3569 | break; | |
3570 | } | |
3571 | if (q == NULL) | |
3572 | pp = &p->next; | |
3dab13f6 | 3573 | } |
25dbc73a | 3574 | *pp = edir->dyn_relocs; |
3dab13f6 | 3575 | } |
25dbc73a AM |
3576 | |
3577 | edir->dyn_relocs = eind->dyn_relocs; | |
3578 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3579 | } |
3dab13f6 | 3580 | |
68ba6d40 AM |
3581 | /* If we were called to copy over info for a weak sym, that's all. |
3582 | You might think dyn_relocs need not be copied over; After all, | |
3583 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 3584 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
3585 | code in ppc_elf_adjust_dynamic_symbol needs to check for |
3586 | dyn_relocs in read-only sections, and it does so on what is the | |
3587 | DIR sym here. */ | |
3588 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3589 | return; | |
3590 | ||
a6aa5195 AM |
3591 | /* Copy over the GOT refcount entries that we may have already seen to |
3592 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3593 | edir->elf.got.refcount += eind->elf.got.refcount; |
3594 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3595 | |
3596 | /* And plt entries. */ | |
3597 | if (eind->elf.plt.plist != NULL) | |
3598 | { | |
3599 | if (edir->elf.plt.plist != NULL) | |
3600 | { | |
3601 | struct plt_entry **entp; | |
3602 | struct plt_entry *ent; | |
3603 | ||
3604 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3605 | { | |
3606 | struct plt_entry *dent; | |
3607 | ||
3608 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3609 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3610 | { | |
3611 | dent->plt.refcount += ent->plt.refcount; | |
3612 | *entp = ent->next; | |
3613 | break; | |
3614 | } | |
3615 | if (dent == NULL) | |
3616 | entp = &ent->next; | |
3617 | } | |
3618 | *entp = edir->elf.plt.plist; | |
3619 | } | |
3620 | ||
3621 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3622 | eind->elf.plt.plist = NULL; | |
3623 | } | |
3624 | ||
fcfa13d2 | 3625 | if (eind->elf.dynindx != -1) |
25dbc73a | 3626 | { |
fcfa13d2 AM |
3627 | if (edir->elf.dynindx != -1) |
3628 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3629 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3630 | edir->elf.dynindx = eind->elf.dynindx; |
3631 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3632 | eind->elf.dynindx = -1; | |
3633 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3634 | } |
25dbc73a | 3635 | } |
3dab13f6 | 3636 | |
25dbc73a AM |
3637 | /* Hook called by the linker routine which adds symbols from an object |
3638 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3639 | |
25dbc73a AM |
3640 | static bfd_boolean |
3641 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3642 | struct bfd_link_info *info, | |
3643 | Elf_Internal_Sym *sym, | |
3644 | const char **namep ATTRIBUTE_UNUSED, | |
3645 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3646 | asection **secp, | |
3647 | bfd_vma *valp) | |
3648 | { | |
3649 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3650 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
3651 | && is_ppc_elf (info->output_bfd) |
3652 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3653 | { |
3654 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3655 | put into .sbss. */ | |
3656 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3657 | |
25dbc73a AM |
3658 | htab = ppc_elf_hash_table (info); |
3659 | if (htab->sbss == NULL) | |
3660 | { | |
644285ef | 3661 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3662 | |
644285ef AM |
3663 | if (!htab->elf.dynobj) |
3664 | htab->elf.dynobj = abfd; | |
3665 | ||
3496cb2a L |
3666 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3667 | ".sbss", | |
3668 | flags); | |
3669 | if (htab->sbss == NULL) | |
25dbc73a | 3670 | return FALSE; |
3dab13f6 | 3671 | } |
3dab13f6 | 3672 | |
25dbc73a AM |
3673 | *secp = htab->sbss; |
3674 | *valp = sym->st_size; | |
3675 | } | |
3dab13f6 | 3676 | |
f1885d1e AM |
3677 | if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
3678 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE) | |
3679 | && (abfd->flags & DYNAMIC) == 0 | |
3680 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
13a2df29 | 3681 | elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any; |
e054468f | 3682 | |
25dbc73a | 3683 | return TRUE; |
3dab13f6 AM |
3684 | } |
3685 | \f | |
25dbc73a AM |
3686 | /* Find a linker generated pointer with a given addend and type. */ |
3687 | ||
3688 | static elf_linker_section_pointers_t * | |
3689 | elf_find_pointer_linker_section | |
3690 | (elf_linker_section_pointers_t *linker_pointers, | |
3691 | bfd_vma addend, | |
3692 | elf_linker_section_t *lsect) | |
252b5132 | 3693 | { |
25dbc73a AM |
3694 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3695 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3696 | return linker_pointers; | |
252b5132 | 3697 | |
25dbc73a AM |
3698 | return NULL; |
3699 | } | |
3700 | ||
3701 | /* Allocate a pointer to live in a linker created section. */ | |
3702 | ||
3703 | static bfd_boolean | |
93d1b056 AM |
3704 | elf_allocate_pointer_linker_section (bfd *abfd, |
3705 | elf_linker_section_t *lsect, | |
3706 | struct elf_link_hash_entry *h, | |
3707 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3708 | { |
3709 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3710 | elf_linker_section_pointers_t *linker_section_ptr; | |
3711 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3712 | bfd_size_type amt; | |
3713 | ||
3714 | BFD_ASSERT (lsect != NULL); | |
3715 | ||
3716 | /* Is this a global symbol? */ | |
3717 | if (h != NULL) | |
3718 | { | |
3719 | struct ppc_elf_link_hash_entry *eh; | |
3720 | ||
3721 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3722 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3723 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3724 | rel->r_addend, | |
3725 | lsect)) | |
3726 | return TRUE; | |
3727 | ||
3728 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3729 | } |
3730 | else | |
3731 | { | |
0c8d6e5c | 3732 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3733 | |
25dbc73a AM |
3734 | /* Allocation of a pointer to a local symbol. */ |
3735 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3736 | ||
3737 | /* Allocate a table to hold the local symbols if first time. */ | |
3738 | if (!ptr) | |
3739 | { | |
0ffa91dd | 3740 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3741 | |
3742 | amt = num_symbols; | |
3743 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3744 | ptr = bfd_zalloc (abfd, amt); | |
3745 | ||
3746 | if (!ptr) | |
3747 | return FALSE; | |
3748 | ||
3749 | elf_local_ptr_offsets (abfd) = ptr; | |
3750 | } | |
3751 | ||
3752 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3753 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3754 | rel->r_addend, | |
3755 | lsect)) | |
3756 | return TRUE; | |
252b5132 | 3757 | |
25dbc73a | 3758 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3759 | } |
41fcb14e | 3760 | |
25dbc73a AM |
3761 | /* Allocate space for a pointer in the linker section, and allocate |
3762 | a new pointer record from internal memory. */ | |
3763 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3764 | amt = sizeof (elf_linker_section_pointers_t); | |
3765 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3766 | |
25dbc73a | 3767 | if (!linker_section_ptr) |
7619e7c7 | 3768 | return FALSE; |
41fcb14e | 3769 | |
25dbc73a AM |
3770 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3771 | linker_section_ptr->addend = rel->r_addend; | |
3772 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3773 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3774 | |
93d1b056 AM |
3775 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3776 | return FALSE; | |
25dbc73a AM |
3777 | linker_section_ptr->offset = lsect->section->size; |
3778 | lsect->section->size += 4; | |
7619e7c7 | 3779 | |
25dbc73a AM |
3780 | #ifdef DEBUG |
3781 | fprintf (stderr, | |
3782 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3783 | lsect->name, (long) linker_section_ptr->offset, | |
3784 | (long) lsect->section->size); | |
3785 | #endif | |
7619e7c7 AM |
3786 | |
3787 | return TRUE; | |
41fcb14e AM |
3788 | } |
3789 | ||
e054468f | 3790 | static struct plt_entry ** |
25dbc73a AM |
3791 | update_local_sym_info (bfd *abfd, |
3792 | Elf_Internal_Shdr *symtab_hdr, | |
3793 | unsigned long r_symndx, | |
3794 | int tls_type) | |
252b5132 | 3795 | { |
25dbc73a | 3796 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3797 | struct plt_entry **local_plt; |
25dbc73a | 3798 | char *local_got_tls_masks; |
252b5132 | 3799 | |
25dbc73a | 3800 | if (local_got_refcounts == NULL) |
252b5132 | 3801 | { |
25dbc73a AM |
3802 | bfd_size_type size = symtab_hdr->sh_info; |
3803 | ||
e054468f AM |
3804 | size *= (sizeof (*local_got_refcounts) |
3805 | + sizeof (*local_plt) | |
3806 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3807 | local_got_refcounts = bfd_zalloc (abfd, size); |
3808 | if (local_got_refcounts == NULL) | |
e054468f | 3809 | return NULL; |
25dbc73a | 3810 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3811 | } |
41fcb14e | 3812 | |
e054468f AM |
3813 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3814 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3815 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3816 | if (tls_type != PLT_IFUNC) |
3817 | local_got_refcounts[r_symndx] += 1; | |
3818 | return local_plt + r_symndx; | |
25dbc73a | 3819 | } |
41fcb14e | 3820 | |
a6aa5195 | 3821 | static bfd_boolean |
3ec01793 | 3822 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3823 | asection *sec, bfd_vma addend) |
3824 | { | |
3825 | struct plt_entry *ent; | |
3826 | ||
32af9f6e AM |
3827 | if (addend < 32768) |
3828 | sec = NULL; | |
3ec01793 | 3829 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3830 | if (ent->sec == sec && ent->addend == addend) |
3831 | break; | |
3832 | if (ent == NULL) | |
3833 | { | |
3834 | bfd_size_type amt = sizeof (*ent); | |
3835 | ent = bfd_alloc (abfd, amt); | |
3836 | if (ent == NULL) | |
3837 | return FALSE; | |
3ec01793 | 3838 | ent->next = *plist; |
a6aa5195 AM |
3839 | ent->sec = sec; |
3840 | ent->addend = addend; | |
3841 | ent->plt.refcount = 0; | |
3ec01793 | 3842 | *plist = ent; |
a6aa5195 AM |
3843 | } |
3844 | ent->plt.refcount += 1; | |
3845 | return TRUE; | |
3846 | } | |
3847 | ||
3848 | static struct plt_entry * | |
3ec01793 | 3849 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3850 | { |
3851 | struct plt_entry *ent; | |
3852 | ||
3853 | if (addend < 32768) | |
3854 | sec = NULL; | |
3ec01793 | 3855 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3856 | if (ent->sec == sec && ent->addend == addend) |
3857 | break; | |
3858 | return ent; | |
3859 | } | |
3860 | ||
e054468f AM |
3861 | static bfd_boolean |
3862 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3863 | { | |
3864 | return (r_type == R_PPC_PLTREL24 | |
3865 | || r_type == R_PPC_LOCAL24PC | |
3866 | || r_type == R_PPC_REL24 | |
3867 | || r_type == R_PPC_REL14 | |
3868 | || r_type == R_PPC_REL14_BRTAKEN | |
3869 | || r_type == R_PPC_REL14_BRNTAKEN | |
3870 | || r_type == R_PPC_ADDR24 | |
3871 | || r_type == R_PPC_ADDR14 | |
3872 | || r_type == R_PPC_ADDR14_BRTAKEN | |
3873 | || r_type == R_PPC_ADDR14_BRNTAKEN); | |
3874 | } | |
3875 | ||
25dbc73a AM |
3876 | static void |
3877 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3878 | { | |
3879 | (*_bfd_error_handler) | |
3880 | (_("%B: relocation %s cannot be used when making a shared object"), | |
3881 | abfd, | |
3882 | ppc_elf_howto_table[r_type]->name); | |
3883 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3884 | } |
3885 | ||
25dbc73a AM |
3886 | /* Look through the relocs for a section during the first phase, and |
3887 | allocate space in the global offset table or procedure linkage | |
3888 | table. */ | |
252b5132 | 3889 | |
b34976b6 | 3890 | static bfd_boolean |
25dbc73a AM |
3891 | ppc_elf_check_relocs (bfd *abfd, |
3892 | struct bfd_link_info *info, | |
3893 | asection *sec, | |
3894 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3895 | { |
7619e7c7 | 3896 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3897 | Elf_Internal_Shdr *symtab_hdr; |
3898 | struct elf_link_hash_entry **sym_hashes; | |
3899 | const Elf_Internal_Rela *rel; | |
3900 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3901 | asection *got2, *sreloc; |
727fc41e | 3902 | struct elf_link_hash_entry *tga; |
25dbc73a | 3903 | |
0e1862bb | 3904 | if (bfd_link_relocatable (info)) |
25dbc73a | 3905 | return TRUE; |
252b5132 | 3906 | |
c87b5a93 AM |
3907 | /* Don't do anything special with non-loaded, non-alloced sections. |
3908 | In particular, any relocs in such sections should not affect GOT | |
3909 | and PLT reference counting (ie. we don't allow them to create GOT | |
3910 | or PLT entries), there's no possibility or desire to optimize TLS | |
3911 | relocs, and there's not much point in propagating relocs to shared | |
3912 | libs that the dynamic linker won't relocate. */ | |
3913 | if ((sec->flags & SEC_ALLOC) == 0) | |
3914 | return TRUE; | |
3915 | ||
252b5132 | 3916 | #ifdef DEBUG |
25dbc73a AM |
3917 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3918 | sec, abfd); | |
252b5132 RH |
3919 | #endif |
3920 | ||
0c8d6e5c | 3921 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3922 | |
25dbc73a AM |
3923 | /* Initialize howto table if not already done. */ |
3924 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3925 | ppc_elf_howto_init (); | |
3926 | ||
7619e7c7 | 3927 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3928 | if (htab->glink == NULL) |
3929 | { | |
3930 | if (htab->elf.dynobj == NULL) | |
3931 | htab->elf.dynobj = abfd; | |
3932 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3933 | return FALSE; | |
3934 | } | |
727fc41e AM |
3935 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3936 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3937 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3938 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3939 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3940 | sreloc = NULL; |
3941 | ||
3942 | rel_end = relocs + sec->reloc_count; | |
3943 | for (rel = relocs; rel < rel_end; rel++) | |
3944 | { | |
3945 | unsigned long r_symndx; | |
3946 | enum elf_ppc_reloc_type r_type; | |
3947 | struct elf_link_hash_entry *h; | |
727fc41e | 3948 | int tls_type; |
cbf95972 | 3949 | struct plt_entry **ifunc; |
25dbc73a AM |
3950 | |
3951 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3952 | if (r_symndx < symtab_hdr->sh_info) | |
3953 | h = NULL; | |
3954 | else | |
973a3492 L |
3955 | { |
3956 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3957 | while (h->root.type == bfd_link_hash_indirect | |
3958 | || h->root.type == bfd_link_hash_warning) | |
3959 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
3960 | |
3961 | /* PR15323, ref flags aren't set for references in the same | |
3962 | object. */ | |
3963 | h->root.non_ir_ref = 1; | |
973a3492 | 3964 | } |
25dbc73a AM |
3965 | |
3966 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3967 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3968 | startup code. */ | |
3b36f7e6 AM |
3969 | if (h != NULL |
3970 | && htab->got == NULL | |
3971 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3972 | { |
3b36f7e6 AM |
3973 | if (htab->elf.dynobj == NULL) |
3974 | htab->elf.dynobj = abfd; | |
3975 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3976 | return FALSE; | |
3977 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3978 | } |
252b5132 | 3979 | |
727fc41e | 3980 | tls_type = 0; |
de972ffa | 3981 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 3982 | ifunc = NULL; |
06a162cf | 3983 | if (h == NULL && !htab->is_vxworks) |
e054468f | 3984 | { |
06a162cf AM |
3985 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3986 | abfd, r_symndx); | |
3987 | if (isym == NULL) | |
3988 | return FALSE; | |
3989 | ||
0bed072f | 3990 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 3991 | { |
0bed072f | 3992 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf AM |
3993 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
3994 | PLT_IFUNC); | |
3995 | if (ifunc == NULL) | |
e054468f AM |
3996 | return FALSE; |
3997 | ||
06a162cf AM |
3998 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
3999 | In a non-pie executable even when there are | |
4000 | no plt calls. */ | |
0e1862bb | 4001 | if (!bfd_link_pic (info) |
0bed072f | 4002 | || is_branch_reloc (r_type)) |
e054468f | 4003 | { |
0bed072f AM |
4004 | bfd_vma addend = 0; |
4005 | if (r_type == R_PPC_PLTREL24) | |
4006 | { | |
4007 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4008 | if (bfd_link_pic (info)) |
0bed072f AM |
4009 | addend = rel->r_addend; |
4010 | } | |
4011 | if (!update_plt_info (abfd, ifunc, got2, addend)) | |
4012 | return FALSE; | |
e054468f AM |
4013 | } |
4014 | } | |
25f23106 AM |
4015 | } |
4016 | ||
de972ffa AM |
4017 | if (!htab->is_vxworks |
4018 | && is_branch_reloc (r_type) | |
4019 | && h != NULL | |
4020 | && h == tga) | |
25f23106 | 4021 | { |
de972ffa AM |
4022 | if (rel != relocs |
4023 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
4024 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
4025 | /* We have a new-style __tls_get_addr call with a marker | |
4026 | reloc. */ | |
4027 | ; | |
4028 | else | |
4029 | /* Mark this section as having an old-style call. */ | |
4030 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4031 | } |
727fc41e | 4032 | |
25dbc73a AM |
4033 | switch (r_type) |
4034 | { | |
727fc41e AM |
4035 | case R_PPC_TLSGD: |
4036 | case R_PPC_TLSLD: | |
4037 | /* These special tls relocs tie a call to __tls_get_addr with | |
4038 | its parameter symbol. */ | |
4039 | break; | |
4040 | ||
25dbc73a AM |
4041 | case R_PPC_GOT_TLSLD16: |
4042 | case R_PPC_GOT_TLSLD16_LO: | |
4043 | case R_PPC_GOT_TLSLD16_HI: | |
4044 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4045 | tls_type = TLS_TLS | TLS_LD; |
4046 | goto dogottls; | |
252b5132 | 4047 | |
25dbc73a AM |
4048 | case R_PPC_GOT_TLSGD16: |
4049 | case R_PPC_GOT_TLSGD16_LO: | |
4050 | case R_PPC_GOT_TLSGD16_HI: | |
4051 | case R_PPC_GOT_TLSGD16_HA: | |
4052 | tls_type = TLS_TLS | TLS_GD; | |
4053 | goto dogottls; | |
4054 | ||
4055 | case R_PPC_GOT_TPREL16: | |
4056 | case R_PPC_GOT_TPREL16_LO: | |
4057 | case R_PPC_GOT_TPREL16_HI: | |
4058 | case R_PPC_GOT_TPREL16_HA: | |
0e1862bb | 4059 | if (bfd_link_pic (info)) |
25dbc73a AM |
4060 | info->flags |= DF_STATIC_TLS; |
4061 | tls_type = TLS_TLS | TLS_TPREL; | |
4062 | goto dogottls; | |
4063 | ||
4064 | case R_PPC_GOT_DTPREL16: | |
4065 | case R_PPC_GOT_DTPREL16_LO: | |
4066 | case R_PPC_GOT_DTPREL16_HI: | |
4067 | case R_PPC_GOT_DTPREL16_HA: | |
4068 | tls_type = TLS_TLS | TLS_DTPREL; | |
4069 | dogottls: | |
4070 | sec->has_tls_reloc = 1; | |
4071 | /* Fall thru */ | |
252b5132 | 4072 | |
25dbc73a AM |
4073 | /* GOT16 relocations */ |
4074 | case R_PPC_GOT16: | |
4075 | case R_PPC_GOT16_LO: | |
4076 | case R_PPC_GOT16_HI: | |
4077 | case R_PPC_GOT16_HA: | |
4078 | /* This symbol requires a global offset table entry. */ | |
4079 | if (htab->got == NULL) | |
4080 | { | |
4081 | if (htab->elf.dynobj == NULL) | |
4082 | htab->elf.dynobj = abfd; | |
4083 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4084 | return FALSE; | |
4085 | } | |
4086 | if (h != NULL) | |
4087 | { | |
4088 | h->got.refcount += 1; | |
4089 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4090 | } | |
4091 | else | |
4092 | /* This is a global offset table entry for a local symbol. */ | |
4093 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4094 | return FALSE; | |
91e21fb7 AM |
4095 | |
4096 | /* We may also need a plt entry if the symbol turns out to be | |
4097 | an ifunc. */ | |
0e1862bb | 4098 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
4099 | { |
4100 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4101 | return FALSE; | |
4102 | } | |
25dbc73a | 4103 | break; |
252b5132 | 4104 | |
25dbc73a AM |
4105 | /* Indirect .sdata relocation. */ |
4106 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 4107 | if (bfd_link_pic (info)) |
25dbc73a AM |
4108 | { |
4109 | bad_shared_reloc (abfd, r_type); | |
4110 | return FALSE; | |
4111 | } | |
93d1b056 AM |
4112 | htab->sdata[0].sym->ref_regular = 1; |
4113 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4114 | h, rel)) | |
25dbc73a | 4115 | return FALSE; |
046183de AM |
4116 | if (h != NULL) |
4117 | { | |
4118 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4119 | h->non_got_ref = TRUE; | |
4120 | } | |
25dbc73a | 4121 | break; |
252b5132 | 4122 | |
25dbc73a AM |
4123 | /* Indirect .sdata2 relocation. */ |
4124 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 4125 | if (bfd_link_pic (info)) |
25dbc73a AM |
4126 | { |
4127 | bad_shared_reloc (abfd, r_type); | |
4128 | return FALSE; | |
4129 | } | |
93d1b056 AM |
4130 | htab->sdata[1].sym->ref_regular = 1; |
4131 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4132 | h, rel)) | |
25dbc73a | 4133 | return FALSE; |
046183de AM |
4134 | if (h != NULL) |
4135 | { | |
4136 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4137 | h->non_got_ref = TRUE; | |
4138 | } | |
25dbc73a | 4139 | break; |
252b5132 | 4140 | |
93d1b056 AM |
4141 | case R_PPC_SDAREL16: |
4142 | htab->sdata[0].sym->ref_regular = 1; | |
4143 | /* Fall thru */ | |
4144 | ||
b9c361e0 JL |
4145 | case R_PPC_VLE_SDAREL_LO16A: |
4146 | case R_PPC_VLE_SDAREL_LO16D: | |
4147 | case R_PPC_VLE_SDAREL_HI16A: | |
4148 | case R_PPC_VLE_SDAREL_HI16D: | |
4149 | case R_PPC_VLE_SDAREL_HA16A: | |
4150 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4151 | if (h != NULL) |
4152 | { | |
4153 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4154 | h->non_got_ref = TRUE; | |
4155 | } | |
4156 | break; | |
4157 | ||
b9c361e0 JL |
4158 | case R_PPC_VLE_REL8: |
4159 | case R_PPC_VLE_REL15: | |
4160 | case R_PPC_VLE_REL24: | |
4161 | case R_PPC_VLE_LO16A: | |
4162 | case R_PPC_VLE_LO16D: | |
4163 | case R_PPC_VLE_HI16A: | |
4164 | case R_PPC_VLE_HI16D: | |
4165 | case R_PPC_VLE_HA16A: | |
4166 | case R_PPC_VLE_HA16D: | |
4167 | break; | |
4168 | ||
25dbc73a | 4169 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 4170 | if (bfd_link_pic (info)) |
046183de AM |
4171 | { |
4172 | bad_shared_reloc (abfd, r_type); | |
4173 | return FALSE; | |
4174 | } | |
93d1b056 | 4175 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4176 | if (h != NULL) |
4177 | { | |
4178 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4179 | h->non_got_ref = TRUE; | |
4180 | } | |
4181 | break; | |
4182 | ||
b9c361e0 JL |
4183 | case R_PPC_VLE_SDA21_LO: |
4184 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4185 | case R_PPC_EMB_SDA21: |
4186 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 4187 | if (bfd_link_pic (info)) |
046183de AM |
4188 | { |
4189 | bad_shared_reloc (abfd, r_type); | |
4190 | return FALSE; | |
4191 | } | |
046183de AM |
4192 | if (h != NULL) |
4193 | { | |
4194 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4195 | h->non_got_ref = TRUE; | |
4196 | } | |
4197 | break; | |
4198 | ||
25dbc73a AM |
4199 | case R_PPC_EMB_NADDR32: |
4200 | case R_PPC_EMB_NADDR16: | |
4201 | case R_PPC_EMB_NADDR16_LO: | |
4202 | case R_PPC_EMB_NADDR16_HI: | |
4203 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 4204 | if (bfd_link_pic (info)) |
25dbc73a AM |
4205 | { |
4206 | bad_shared_reloc (abfd, r_type); | |
4207 | return FALSE; | |
4208 | } | |
4dc4a9a5 | 4209 | if (h != NULL) |
046183de | 4210 | h->non_got_ref = TRUE; |
25dbc73a | 4211 | break; |
252b5132 | 4212 | |
25dbc73a | 4213 | case R_PPC_PLTREL24: |
de972ffa | 4214 | if (h == NULL) |
6d78d0b9 AM |
4215 | break; |
4216 | /* Fall through */ | |
4217 | case R_PPC_PLT32: | |
25dbc73a AM |
4218 | case R_PPC_PLTREL32: |
4219 | case R_PPC_PLT16_LO: | |
4220 | case R_PPC_PLT16_HI: | |
4221 | case R_PPC_PLT16_HA: | |
4222 | #ifdef DEBUG | |
4223 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4224 | #endif | |
cbf95972 | 4225 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
4226 | if (h == NULL) |
4227 | { | |
cbf95972 AM |
4228 | if (ifunc == NULL) |
4229 | { | |
4230 | /* It does not make sense to have a procedure linkage | |
4231 | table entry for a non-ifunc local symbol. */ | |
4232 | info->callbacks->einfo | |
4233 | (_("%P: %H: %s reloc against local symbol\n"), | |
4234 | abfd, sec, rel->r_offset, | |
4235 | ppc_elf_howto_table[r_type]->name); | |
4236 | bfd_set_error (bfd_error_bad_value); | |
4237 | return FALSE; | |
4238 | } | |
25dbc73a | 4239 | } |
a6aa5195 AM |
4240 | else |
4241 | { | |
016687f8 | 4242 | bfd_vma addend = 0; |
ee05f2fe | 4243 | |
016687f8 AM |
4244 | if (r_type == R_PPC_PLTREL24) |
4245 | { | |
4246 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4247 | if (bfd_link_pic (info)) |
a877a2b6 | 4248 | addend = rel->r_addend; |
016687f8 | 4249 | } |
a6aa5195 | 4250 | h->needs_plt = 1; |
32af9f6e | 4251 | if (!update_plt_info (abfd, &h->plt.plist, got2, addend)) |
a6aa5195 AM |
4252 | return FALSE; |
4253 | } | |
25dbc73a | 4254 | break; |
ee05f2fe | 4255 | |
25dbc73a AM |
4256 | /* The following relocations don't need to propagate the |
4257 | relocation if linking a shared object since they are | |
4258 | section relative. */ | |
4259 | case R_PPC_SECTOFF: | |
4260 | case R_PPC_SECTOFF_LO: | |
4261 | case R_PPC_SECTOFF_HI: | |
4262 | case R_PPC_SECTOFF_HA: | |
4263 | case R_PPC_DTPREL16: | |
4264 | case R_PPC_DTPREL16_LO: | |
4265 | case R_PPC_DTPREL16_HI: | |
4266 | case R_PPC_DTPREL16_HA: | |
4267 | case R_PPC_TOC16: | |
4268 | break; | |
252b5132 | 4269 | |
d7128ce4 AM |
4270 | case R_PPC_REL16: |
4271 | case R_PPC_REL16_LO: | |
4272 | case R_PPC_REL16_HI: | |
4273 | case R_PPC_REL16_HA: | |
a680de9a | 4274 | case R_PPC_REL16DX_HA: |
016687f8 | 4275 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4276 | break; |
4277 | ||
a6aa5195 | 4278 | /* These are just markers. */ |
25dbc73a AM |
4279 | case R_PPC_TLS: |
4280 | case R_PPC_EMB_MRKREF: | |
4281 | case R_PPC_NONE: | |
4282 | case R_PPC_max: | |
32af9f6e AM |
4283 | case R_PPC_RELAX: |
4284 | case R_PPC_RELAX_PLT: | |
4285 | case R_PPC_RELAX_PLTREL24: | |
25dbc73a | 4286 | break; |
252b5132 | 4287 | |
25dbc73a AM |
4288 | /* These should only appear in dynamic objects. */ |
4289 | case R_PPC_COPY: | |
4290 | case R_PPC_GLOB_DAT: | |
4291 | case R_PPC_JMP_SLOT: | |
4292 | case R_PPC_RELATIVE: | |
e054468f | 4293 | case R_PPC_IRELATIVE: |
25dbc73a | 4294 | break; |
252b5132 | 4295 | |
25dbc73a AM |
4296 | /* These aren't handled yet. We'll report an error later. */ |
4297 | case R_PPC_ADDR30: | |
4298 | case R_PPC_EMB_RELSEC16: | |
4299 | case R_PPC_EMB_RELST_LO: | |
4300 | case R_PPC_EMB_RELST_HI: | |
4301 | case R_PPC_EMB_RELST_HA: | |
4302 | case R_PPC_EMB_BIT_FLD: | |
4303 | break; | |
252b5132 | 4304 | |
25dbc73a AM |
4305 | /* This refers only to functions defined in the shared library. */ |
4306 | case R_PPC_LOCAL24PC: | |
727fc41e | 4307 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4308 | { |
4309 | htab->plt_type = PLT_OLD; | |
4310 | htab->old_bfd = abfd; | |
4311 | } | |
c7e17e05 AM |
4312 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4313 | { | |
0e1862bb | 4314 | if (bfd_link_pic (info)) |
c7e17e05 | 4315 | { |
cbf95972 AM |
4316 | info->callbacks->einfo |
4317 | (_("%P: %H: @local call to ifunc %s\n"), | |
4318 | abfd, sec, rel->r_offset, | |
4319 | h->root.root.string); | |
c7e17e05 AM |
4320 | bfd_set_error (bfd_error_bad_value); |
4321 | return FALSE; | |
4322 | } | |
4323 | h->needs_plt = 1; | |
4324 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4325 | return FALSE; | |
4326 | } | |
25dbc73a | 4327 | break; |
252b5132 | 4328 | |
25dbc73a AM |
4329 | /* This relocation describes the C++ object vtable hierarchy. |
4330 | Reconstruct it for later use during GC. */ | |
4331 | case R_PPC_GNU_VTINHERIT: | |
4332 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4333 | return FALSE; | |
4334 | break; | |
252b5132 | 4335 | |
25dbc73a AM |
4336 | /* This relocation describes which C++ vtable entries are actually |
4337 | used. Record for later use during GC. */ | |
4338 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4339 | BFD_ASSERT (h != NULL); |
4340 | if (h != NULL | |
4341 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4342 | return FALSE; |
4343 | break; | |
252b5132 | 4344 | |
25dbc73a AM |
4345 | /* We shouldn't really be seeing these. */ |
4346 | case R_PPC_TPREL32: | |
1d483afe AM |
4347 | case R_PPC_TPREL16: |
4348 | case R_PPC_TPREL16_LO: | |
4349 | case R_PPC_TPREL16_HI: | |
4350 | case R_PPC_TPREL16_HA: | |
0e1862bb | 4351 | if (bfd_link_pic (info)) |
25dbc73a AM |
4352 | info->flags |= DF_STATIC_TLS; |
4353 | goto dodyn; | |
252b5132 | 4354 | |
25dbc73a AM |
4355 | /* Nor these. */ |
4356 | case R_PPC_DTPMOD32: | |
4357 | case R_PPC_DTPREL32: | |
4358 | goto dodyn; | |
252b5132 | 4359 | |
9edfd1af AM |
4360 | case R_PPC_REL32: |
4361 | if (h == NULL | |
4362 | && got2 != NULL | |
4363 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 4364 | && bfd_link_pic (info) |
4a3dc543 | 4365 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4366 | { |
4367 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4368 | the start of a function, which assembles to a REL32 | |
4369 | reference to .got2. If we detect one of these, then | |
4370 | force the old PLT layout because the linker cannot | |
4371 | reliably deduce the GOT pointer value needed for | |
4372 | PLT call stubs. */ | |
4373 | asection *s; | |
87d72d41 | 4374 | Elf_Internal_Sym *isym; |
9edfd1af | 4375 | |
87d72d41 AM |
4376 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4377 | abfd, r_symndx); | |
4378 | if (isym == NULL) | |
4379 | return FALSE; | |
4380 | ||
4381 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4382 | if (s == got2) |
016687f8 AM |
4383 | { |
4384 | htab->plt_type = PLT_OLD; | |
4385 | htab->old_bfd = abfd; | |
4386 | } | |
9edfd1af | 4387 | } |
7123df0e | 4388 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4389 | break; |
625af618 AM |
4390 | /* fall through */ |
4391 | ||
4392 | case R_PPC_ADDR32: | |
4393 | case R_PPC_ADDR16: | |
4394 | case R_PPC_ADDR16_LO: | |
4395 | case R_PPC_ADDR16_HI: | |
4396 | case R_PPC_ADDR16_HA: | |
4397 | case R_PPC_UADDR32: | |
4398 | case R_PPC_UADDR16: | |
0e1862bb | 4399 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
4400 | { |
4401 | /* We may need a plt entry if the symbol turns out to be | |
4402 | a function defined in a dynamic object. */ | |
3ec01793 | 4403 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4404 | return FALSE; |
4405 | ||
4406 | /* We may need a copy reloc too. */ | |
4407 | h->non_got_ref = 1; | |
4408 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
4409 | if (r_type == R_PPC_ADDR16_HA) |
4410 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
4411 | if (r_type == R_PPC_ADDR16_LO) | |
4412 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
4413 | } |
4414 | goto dodyn; | |
9edfd1af | 4415 | |
25dbc73a AM |
4416 | case R_PPC_REL24: |
4417 | case R_PPC_REL14: | |
4418 | case R_PPC_REL14_BRTAKEN: | |
4419 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4420 | if (h == NULL) |
25dbc73a | 4421 | break; |
7123df0e | 4422 | if (h == htab->elf.hgot) |
d7128ce4 | 4423 | { |
7123df0e | 4424 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4425 | { |
4426 | htab->plt_type = PLT_OLD; | |
4427 | htab->old_bfd = abfd; | |
4428 | } | |
d7128ce4 AM |
4429 | break; |
4430 | } | |
25dbc73a | 4431 | /* fall through */ |
ee05f2fe | 4432 | |
25dbc73a | 4433 | case R_PPC_ADDR24: |
25dbc73a AM |
4434 | case R_PPC_ADDR14: |
4435 | case R_PPC_ADDR14_BRTAKEN: | |
4436 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 4437 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
4438 | { |
4439 | /* We may need a plt entry if the symbol turns out to be | |
4440 | a function defined in a dynamic object. */ | |
e054468f | 4441 | h->needs_plt = 1; |
de972ffa | 4442 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4443 | return FALSE; |
625af618 | 4444 | break; |
25dbc73a | 4445 | } |
7619e7c7 | 4446 | |
25dbc73a AM |
4447 | dodyn: |
4448 | /* If we are creating a shared library, and this is a reloc | |
4449 | against a global symbol, or a non PC relative reloc | |
4450 | against a local symbol, then we need to copy the reloc | |
4451 | into the shared library. However, if we are linking with | |
4452 | -Bsymbolic, we do not need to copy a reloc against a | |
4453 | global symbol which is defined in an object we are | |
4454 | including in the link (i.e., DEF_REGULAR is set). At | |
4455 | this point we have not seen all the input files, so it is | |
4456 | possible that DEF_REGULAR is not set now but will be set | |
4457 | later (it is never cleared). In case of a weak definition, | |
4458 | DEF_REGULAR may be cleared later by a strong definition in | |
4459 | a shared library. We account for that possibility below by | |
4460 | storing information in the dyn_relocs field of the hash | |
4461 | table entry. A similar situation occurs when creating | |
4462 | shared libraries and symbol visibility changes render the | |
4463 | symbol local. | |
7619e7c7 | 4464 | |
25dbc73a AM |
4465 | If on the other hand, we are creating an executable, we |
4466 | may need to keep relocations for symbols satisfied by a | |
4467 | dynamic library if we manage to avoid copy relocs for the | |
4468 | symbol. */ | |
0e1862bb | 4469 | if ((bfd_link_pic (info) |
1d483afe | 4470 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4471 | || (h != NULL |
198f1157 | 4472 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4473 | || h->root.type == bfd_link_hash_defweak |
4474 | || !h->def_regular)))) | |
4475 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 4476 | && !bfd_link_pic (info) |
25dbc73a AM |
4477 | && h != NULL |
4478 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4479 | || !h->def_regular))) |
25dbc73a | 4480 | { |
25dbc73a AM |
4481 | #ifdef DEBUG |
4482 | fprintf (stderr, | |
4483 | "ppc_elf_check_relocs needs to " | |
4484 | "create relocation for %s\n", | |
4485 | (h && h->root.root.string | |
4486 | ? h->root.root.string : "<unknown>")); | |
4487 | #endif | |
4488 | if (sreloc == NULL) | |
4489 | { | |
c9a2f333 AM |
4490 | if (htab->elf.dynobj == NULL) |
4491 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4492 | |
4493 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4494 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4495 | ||
25dbc73a | 4496 | if (sreloc == NULL) |
83bac4b0 | 4497 | return FALSE; |
25dbc73a | 4498 | } |
7619e7c7 | 4499 | |
25dbc73a AM |
4500 | /* If this is a global symbol, we count the number of |
4501 | relocations we need for this symbol. */ | |
4502 | if (h != NULL) | |
4503 | { | |
f95f8542 AM |
4504 | struct elf_dyn_relocs *p; |
4505 | struct elf_dyn_relocs **rel_head; | |
4506 | ||
91d6fa6a | 4507 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4508 | p = *rel_head; |
4509 | if (p == NULL || p->sec != sec) | |
4510 | { | |
4511 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4512 | if (p == NULL) | |
4513 | return FALSE; | |
4514 | p->next = *rel_head; | |
4515 | *rel_head = p; | |
4516 | p->sec = sec; | |
4517 | p->count = 0; | |
4518 | p->pc_count = 0; | |
4519 | } | |
4520 | p->count += 1; | |
4521 | if (!must_be_dyn_reloc (info, r_type)) | |
4522 | p->pc_count += 1; | |
25dbc73a AM |
4523 | } |
4524 | else | |
4525 | { | |
4526 | /* Track dynamic relocs needed for local syms too. | |
4527 | We really need local syms available to do this | |
4528 | easily. Oh well. */ | |
f95f8542 AM |
4529 | struct ppc_dyn_relocs *p; |
4530 | struct ppc_dyn_relocs **rel_head; | |
4531 | bfd_boolean is_ifunc; | |
25dbc73a | 4532 | asection *s; |
6edfbbad | 4533 | void *vpp; |
87d72d41 | 4534 | Elf_Internal_Sym *isym; |
6edfbbad | 4535 | |
87d72d41 AM |
4536 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4537 | abfd, r_symndx); | |
4538 | if (isym == NULL) | |
25dbc73a | 4539 | return FALSE; |
7fce784e | 4540 | |
87d72d41 AM |
4541 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4542 | if (s == NULL) | |
4543 | s = sec; | |
4544 | ||
6edfbbad | 4545 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4546 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4547 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4548 | p = *rel_head; | |
4549 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4550 | p = p->next; | |
4551 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4552 | { | |
4553 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4554 | if (p == NULL) | |
4555 | return FALSE; | |
4556 | p->next = *rel_head; | |
4557 | *rel_head = p; | |
4558 | p->sec = sec; | |
4559 | p->ifunc = is_ifunc; | |
4560 | p->count = 0; | |
4561 | } | |
4562 | p->count += 1; | |
25dbc73a | 4563 | } |
7619e7c7 | 4564 | } |
25dbc73a AM |
4565 | |
4566 | break; | |
7619e7c7 AM |
4567 | } |
4568 | } | |
ee05f2fe | 4569 | |
25dbc73a AM |
4570 | return TRUE; |
4571 | } | |
4572 | \f | |
34c8bcba JM |
4573 | |
4574 | /* Merge object attributes from IBFD into OBFD. Raise an error if | |
4575 | there are conflicting attributes. */ | |
4576 | static bfd_boolean | |
4577 | ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
4578 | { | |
c6e65352 DJ |
4579 | obj_attribute *in_attr, *in_attrs; |
4580 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba JM |
4581 | |
4582 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
4583 | { | |
4584 | /* This is the first object. Copy the attributes. */ | |
4585 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
4586 | ||
4587 | /* Use the Tag_null value to indicate the attributes have been | |
4588 | initialized. */ | |
4589 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
4590 | ||
4591 | return TRUE; | |
4592 | } | |
4593 | ||
c6e65352 DJ |
4594 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4595 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4596 | ||
34c8bcba JM |
4597 | /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge |
4598 | non-conflicting ones. */ | |
c6e65352 DJ |
4599 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4600 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
4601 | if (in_attr->i != out_attr->i) | |
34c8bcba | 4602 | { |
c6e65352 DJ |
4603 | out_attr->type = 1; |
4604 | if (out_attr->i == 0) | |
4605 | out_attr->i = in_attr->i; | |
4606 | else if (in_attr->i == 0) | |
34c8bcba | 4607 | ; |
c6e65352 | 4608 | else if (out_attr->i == 1 && in_attr->i == 2) |
34c8bcba JM |
4609 | _bfd_error_handler |
4610 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); | |
3c7b9897 AM |
4611 | else if (out_attr->i == 1 && in_attr->i == 3) |
4612 | _bfd_error_handler | |
5b914448 | 4613 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), |
3c7b9897 AM |
4614 | obfd, ibfd); |
4615 | else if (out_attr->i == 3 && in_attr->i == 1) | |
4616 | _bfd_error_handler | |
5b914448 | 4617 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), |
3c7b9897 AM |
4618 | ibfd, obfd); |
4619 | else if (out_attr->i == 3 && in_attr->i == 2) | |
4620 | _bfd_error_handler | |
5b914448 | 4621 | (_("Warning: %B uses soft float, %B uses single-precision hard float"), |
3c7b9897 AM |
4622 | ibfd, obfd); |
4623 | else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3)) | |
34c8bcba JM |
4624 | _bfd_error_handler |
4625 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); | |
3c7b9897 | 4626 | else if (in_attr->i > 3) |
34c8bcba JM |
4627 | _bfd_error_handler |
4628 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
c6e65352 | 4629 | in_attr->i); |
34c8bcba JM |
4630 | else |
4631 | _bfd_error_handler | |
4632 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
c6e65352 DJ |
4633 | out_attr->i); |
4634 | } | |
4635 | ||
4636 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4637 | merge non-conflicting ones. */ | |
4638 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4639 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4640 | if (in_attr->i != out_attr->i) | |
4641 | { | |
4642 | const char *in_abi = NULL, *out_abi = NULL; | |
4643 | ||
4644 | switch (in_attr->i) | |
4645 | { | |
4646 | case 1: in_abi = "generic"; break; | |
4647 | case 2: in_abi = "AltiVec"; break; | |
4648 | case 3: in_abi = "SPE"; break; | |
4649 | } | |
4650 | ||
4651 | switch (out_attr->i) | |
4652 | { | |
4653 | case 1: out_abi = "generic"; break; | |
4654 | case 2: out_abi = "AltiVec"; break; | |
4655 | case 3: out_abi = "SPE"; break; | |
4656 | } | |
4657 | ||
4658 | out_attr->type = 1; | |
4659 | if (out_attr->i == 0) | |
4660 | out_attr->i = in_attr->i; | |
4661 | else if (in_attr->i == 0) | |
4662 | ; | |
4663 | /* For now, allow generic to transition to AltiVec or SPE | |
4664 | without a warning. If GCC marked files with their stack | |
4665 | alignment and used don't-care markings for files which are | |
4666 | not affected by the vector ABI, we could warn about this | |
4667 | case too. */ | |
4668 | else if (out_attr->i == 1) | |
4669 | out_attr->i = in_attr->i; | |
4670 | else if (in_attr->i == 1) | |
4671 | ; | |
4672 | else if (in_abi == NULL) | |
4673 | _bfd_error_handler | |
4674 | (_("Warning: %B uses unknown vector ABI %d"), ibfd, | |
4675 | in_attr->i); | |
4676 | else if (out_abi == NULL) | |
4677 | _bfd_error_handler | |
4678 | (_("Warning: %B uses unknown vector ABI %d"), obfd, | |
4679 | in_attr->i); | |
4680 | else | |
4681 | _bfd_error_handler | |
4682 | (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""), | |
4683 | ibfd, obfd, in_abi, out_abi); | |
34c8bcba JM |
4684 | } |
4685 | ||
f82e0623 NF |
4686 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4687 | and merge non-conflicting ones. */ | |
4688 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4689 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4690 | if (in_attr->i != out_attr->i) | |
4691 | { | |
4692 | out_attr->type = 1; | |
4693 | if (out_attr->i == 0) | |
4694 | out_attr->i = in_attr->i; | |
4695 | else if (in_attr->i == 0) | |
4696 | ; | |
4697 | else if (out_attr->i == 1 && in_attr->i == 2) | |
4698 | _bfd_error_handler | |
4699 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd); | |
4700 | else if (out_attr->i == 2 && in_attr->i == 1) | |
4701 | _bfd_error_handler | |
4702 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd); | |
4703 | else if (in_attr->i > 2) | |
4704 | _bfd_error_handler | |
4705 | (_("Warning: %B uses unknown small structure return convention %d"), ibfd, | |
4706 | in_attr->i); | |
4707 | else | |
4708 | _bfd_error_handler | |
4709 | (_("Warning: %B uses unknown small structure return convention %d"), obfd, | |
4710 | out_attr->i); | |
4711 | } | |
4712 | ||
34c8bcba JM |
4713 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
4714 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
4715 | ||
4716 | return TRUE; | |
4717 | } | |
4718 | ||
8853c3d3 AM |
4719 | /* Merge backend specific data from an object file to the output |
4720 | object file when linking. */ | |
4721 | ||
4722 | static bfd_boolean | |
4723 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4724 | { | |
4725 | flagword old_flags; | |
4726 | flagword new_flags; | |
4727 | bfd_boolean error; | |
4728 | ||
0c8d6e5c | 4729 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4730 | return TRUE; |
4731 | ||
cc643b88 | 4732 | /* Check if we have the same endianness. */ |
8853c3d3 AM |
4733 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
4734 | return FALSE; | |
4735 | ||
34c8bcba JM |
4736 | if (!ppc_elf_merge_obj_attributes (ibfd, obfd)) |
4737 | return FALSE; | |
4738 | ||
8853c3d3 AM |
4739 | new_flags = elf_elfheader (ibfd)->e_flags; |
4740 | old_flags = elf_elfheader (obfd)->e_flags; | |
4741 | if (!elf_flags_init (obfd)) | |
4742 | { | |
4743 | /* First call, no flags set. */ | |
4744 | elf_flags_init (obfd) = TRUE; | |
4745 | elf_elfheader (obfd)->e_flags = new_flags; | |
4746 | } | |
4747 | ||
4748 | /* Compatible flags are ok. */ | |
4749 | else if (new_flags == old_flags) | |
4750 | ; | |
4751 | ||
4752 | /* Incompatible flags. */ | |
4753 | else | |
4754 | { | |
4755 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4756 | to be linked with either. */ | |
4757 | error = FALSE; | |
4758 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4759 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4760 | { | |
4761 | error = TRUE; | |
4762 | (*_bfd_error_handler) | |
4763 | (_("%B: compiled with -mrelocatable and linked with " | |
4764 | "modules compiled normally"), ibfd); | |
4765 | } | |
4766 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4767 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4768 | { | |
4769 | error = TRUE; | |
4770 | (*_bfd_error_handler) | |
4771 | (_("%B: compiled normally and linked with " | |
4772 | "modules compiled with -mrelocatable"), ibfd); | |
4773 | } | |
4774 | ||
4775 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4776 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4777 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4778 | ||
4779 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4780 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4781 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4782 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4783 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4784 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4785 | ||
4786 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4787 | any module uses it. */ | |
4788 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4789 | ||
4790 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4791 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4792 | ||
4793 | /* Warn about any other mismatches. */ | |
4794 | if (new_flags != old_flags) | |
4795 | { | |
4796 | error = TRUE; | |
4797 | (*_bfd_error_handler) | |
4798 | (_("%B: uses different e_flags (0x%lx) fields " | |
4799 | "than previous modules (0x%lx)"), | |
4800 | ibfd, (long) new_flags, (long) old_flags); | |
4801 | } | |
4802 | ||
4803 | if (error) | |
4804 | { | |
4805 | bfd_set_error (bfd_error_bad_value); | |
4806 | return FALSE; | |
4807 | } | |
4808 | } | |
4809 | ||
4810 | return TRUE; | |
4811 | } | |
b9c361e0 JL |
4812 | |
4813 | static void | |
86c95733 AM |
4814 | ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc, |
4815 | bfd_vma value, | |
4816 | split16_format_type split16_format) | |
b9c361e0 JL |
4817 | |
4818 | { | |
86c95733 | 4819 | unsigned int insn, top5; |
b9c361e0 | 4820 | |
86c95733 AM |
4821 | insn = bfd_get_32 (output_bfd, loc); |
4822 | top5 = value & 0xf800; | |
4823 | top5 = top5 << (split16_format == split16a_type ? 9 : 5); | |
b9c361e0 | 4824 | insn |= top5; |
86c95733 AM |
4825 | insn |= value & 0x7ff; |
4826 | bfd_put_32 (output_bfd, insn, loc); | |
b9c361e0 JL |
4827 | } |
4828 | ||
8853c3d3 | 4829 | \f |
d7128ce4 AM |
4830 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4831 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4832 | int | |
4833 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 4834 | struct bfd_link_info *info) |
d7128ce4 AM |
4835 | { |
4836 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4837 | flagword flags; |
d7128ce4 AM |
4838 | |
4839 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
4840 | |
4841 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 4842 | { |
b3874e1a AM |
4843 | struct elf_link_hash_entry *h; |
4844 | ||
5446cbdf | 4845 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 4846 | htab->plt_type = PLT_OLD; |
0e1862bb | 4847 | else if (bfd_link_pic (info) |
b3874e1a AM |
4848 | && htab->elf.dynamic_sections_created |
4849 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
4850 | FALSE, FALSE, TRUE)) != NULL | |
4851 | && (h->type == STT_FUNC | |
4852 | || h->needs_plt) | |
4853 | && h->ref_regular | |
4854 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
4855 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4856 | && h->root.type == bfd_link_hash_undefweak))) | |
4857 | { | |
4858 | /* Profiling of shared libs (and pies) is not supported with | |
4859 | secure plt, because ppc32 does profiling before a | |
4860 | function prologue and a secure plt pic call stubs needs | |
4861 | r30 to be set up. */ | |
4862 | htab->plt_type = PLT_OLD; | |
4863 | } | |
016687f8 AM |
4864 | else |
4865 | { | |
4866 | bfd *ibfd; | |
5446cbdf | 4867 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4868 | |
4869 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4870 | Use the old style bss plt if a file makes plt calls | |
4871 | without using the new relocs, and if ld isn't given | |
4872 | --secure-plt and we never see REL16 relocs. */ | |
4873 | if (plt_type == PLT_UNSET) | |
4874 | plt_type = PLT_OLD; | |
c72f2fb2 | 4875 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4876 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4877 | { |
4878 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4879 | plt_type = PLT_NEW; | |
4880 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4881 | { | |
4882 | plt_type = PLT_OLD; | |
4883 | htab->old_bfd = ibfd; | |
4884 | break; | |
4885 | } | |
4886 | } | |
4887 | htab->plt_type = plt_type; | |
4888 | } | |
4889 | } | |
5446cbdf | 4890 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
4891 | { |
4892 | if (htab->old_bfd != NULL) | |
4893 | info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), | |
4894 | htab->old_bfd); | |
4895 | else | |
4896 | info->callbacks->einfo (_("%P: bss-plt forced by profiling\n")); | |
4897 | } | |
d7128ce4 | 4898 | |
4a3dc543 | 4899 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 4900 | |
4a3dc543 | 4901 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
4902 | { |
4903 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4904 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
4905 | |
4906 | /* The new PLT is a loaded section. */ | |
4907 | if (htab->plt != NULL | |
4908 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
4909 | return -1; | |
4910 | ||
4911 | /* The new GOT is not executable. */ | |
4912 | if (htab->got != NULL | |
4913 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
4914 | return -1; | |
d7128ce4 AM |
4915 | } |
4916 | else | |
4917 | { | |
4918 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
4919 | if (htab->glink != NULL |
4920 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
4921 | return -1; | |
d7128ce4 | 4922 | } |
4a3dc543 | 4923 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
4924 | } |
4925 | \f | |
25dbc73a AM |
4926 | /* Return the section that should be marked against GC for a given |
4927 | relocation. */ | |
586119b3 | 4928 | |
25dbc73a AM |
4929 | static asection * |
4930 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 4931 | struct bfd_link_info *info, |
25dbc73a AM |
4932 | Elf_Internal_Rela *rel, |
4933 | struct elf_link_hash_entry *h, | |
4934 | Elf_Internal_Sym *sym) | |
4935 | { | |
4936 | if (h != NULL) | |
07adf181 AM |
4937 | switch (ELF32_R_TYPE (rel->r_info)) |
4938 | { | |
4939 | case R_PPC_GNU_VTINHERIT: | |
4940 | case R_PPC_GNU_VTENTRY: | |
4941 | return NULL; | |
4942 | } | |
4943 | ||
4944 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 4945 | } |
a876ecf9 | 4946 | |
25dbc73a AM |
4947 | /* Update the got, plt and dynamic reloc reference counts for the |
4948 | section being removed. */ | |
4949 | ||
4950 | static bfd_boolean | |
4951 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
4952 | struct bfd_link_info *info, | |
4953 | asection *sec, | |
4954 | const Elf_Internal_Rela *relocs) | |
4955 | { | |
4956 | struct ppc_elf_link_hash_table *htab; | |
4957 | Elf_Internal_Shdr *symtab_hdr; | |
4958 | struct elf_link_hash_entry **sym_hashes; | |
4959 | bfd_signed_vma *local_got_refcounts; | |
4960 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 4961 | asection *got2; |
25dbc73a | 4962 | |
0e1862bb | 4963 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
4964 | return TRUE; |
4965 | ||
c87b5a93 AM |
4966 | if ((sec->flags & SEC_ALLOC) == 0) |
4967 | return TRUE; | |
4968 | ||
25dbc73a AM |
4969 | elf_section_data (sec)->local_dynrel = NULL; |
4970 | ||
4971 | htab = ppc_elf_hash_table (info); | |
0ffa91dd | 4972 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a AM |
4973 | sym_hashes = elf_sym_hashes (abfd); |
4974 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 4975 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
4976 | |
4977 | relend = relocs + sec->reloc_count; | |
4978 | for (rel = relocs; rel < relend; rel++) | |
4979 | { | |
4980 | unsigned long r_symndx; | |
4981 | enum elf_ppc_reloc_type r_type; | |
4982 | struct elf_link_hash_entry *h = NULL; | |
4983 | ||
4984 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4985 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 4986 | { |
6061a67d | 4987 | struct elf_dyn_relocs **pp, *p; |
25dbc73a AM |
4988 | struct ppc_elf_link_hash_entry *eh; |
4989 | ||
4990 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4991 | while (h->root.type == bfd_link_hash_indirect | |
4992 | || h->root.type == bfd_link_hash_warning) | |
4993 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4994 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4995 | ||
4996 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4997 | if (p->sec == sec) | |
4998 | { | |
4999 | /* Everything must go for SEC. */ | |
5000 | *pp = p->next; | |
5001 | break; | |
5002 | } | |
a876ecf9 | 5003 | } |
ee05f2fe | 5004 | |
25dbc73a | 5005 | r_type = ELF32_R_TYPE (rel->r_info); |
de972ffa AM |
5006 | if (!htab->is_vxworks |
5007 | && h == NULL | |
5008 | && local_got_refcounts != NULL | |
0e1862bb | 5009 | && (!bfd_link_pic (info) |
de972ffa | 5010 | || is_branch_reloc (r_type))) |
e054468f | 5011 | { |
de972ffa AM |
5012 | struct plt_entry **local_plt = (struct plt_entry **) |
5013 | (local_got_refcounts + symtab_hdr->sh_info); | |
5014 | char *local_got_tls_masks = (char *) | |
5015 | (local_plt + symtab_hdr->sh_info); | |
5016 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
e054468f | 5017 | { |
de972ffa | 5018 | struct plt_entry **ifunc = local_plt + r_symndx; |
a877a2b6 AM |
5019 | bfd_vma addend = 0; |
5020 | struct plt_entry *ent; | |
5021 | ||
0e1862bb | 5022 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
a877a2b6 AM |
5023 | addend = rel->r_addend; |
5024 | ent = find_plt_ent (ifunc, got2, addend); | |
e054468f AM |
5025 | if (ent->plt.refcount > 0) |
5026 | ent->plt.refcount -= 1; | |
5027 | continue; | |
5028 | } | |
5029 | } | |
5030 | ||
25dbc73a | 5031 | switch (r_type) |
ee05f2fe | 5032 | { |
25dbc73a AM |
5033 | case R_PPC_GOT_TLSLD16: |
5034 | case R_PPC_GOT_TLSLD16_LO: | |
5035 | case R_PPC_GOT_TLSLD16_HI: | |
5036 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
5037 | case R_PPC_GOT_TLSGD16: |
5038 | case R_PPC_GOT_TLSGD16_LO: | |
5039 | case R_PPC_GOT_TLSGD16_HI: | |
5040 | case R_PPC_GOT_TLSGD16_HA: | |
5041 | case R_PPC_GOT_TPREL16: | |
5042 | case R_PPC_GOT_TPREL16_LO: | |
5043 | case R_PPC_GOT_TPREL16_HI: | |
5044 | case R_PPC_GOT_TPREL16_HA: | |
5045 | case R_PPC_GOT_DTPREL16: | |
5046 | case R_PPC_GOT_DTPREL16_LO: | |
5047 | case R_PPC_GOT_DTPREL16_HI: | |
5048 | case R_PPC_GOT_DTPREL16_HA: | |
5049 | case R_PPC_GOT16: | |
5050 | case R_PPC_GOT16_LO: | |
5051 | case R_PPC_GOT16_HI: | |
5052 | case R_PPC_GOT16_HA: | |
5053 | if (h != NULL) | |
ee05f2fe | 5054 | { |
25dbc73a AM |
5055 | if (h->got.refcount > 0) |
5056 | h->got.refcount--; | |
0e1862bb | 5057 | if (!bfd_link_pic (info)) |
91e21fb7 AM |
5058 | { |
5059 | struct plt_entry *ent; | |
5060 | ||
5061 | ent = find_plt_ent (&h->plt.plist, NULL, 0); | |
32af9f6e | 5062 | if (ent != NULL && ent->plt.refcount > 0) |
91e21fb7 AM |
5063 | ent->plt.refcount -= 1; |
5064 | } | |
ee05f2fe | 5065 | } |
25dbc73a AM |
5066 | else if (local_got_refcounts != NULL) |
5067 | { | |
5068 | if (local_got_refcounts[r_symndx] > 0) | |
5069 | local_got_refcounts[r_symndx]--; | |
5070 | } | |
5071 | break; | |
ee05f2fe | 5072 | |
25dbc73a AM |
5073 | case R_PPC_REL24: |
5074 | case R_PPC_REL14: | |
5075 | case R_PPC_REL14_BRTAKEN: | |
5076 | case R_PPC_REL14_BRNTAKEN: | |
5077 | case R_PPC_REL32: | |
3b36f7e6 | 5078 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
5079 | break; |
5080 | /* Fall thru */ | |
ee05f2fe | 5081 | |
25dbc73a AM |
5082 | case R_PPC_ADDR32: |
5083 | case R_PPC_ADDR24: | |
5084 | case R_PPC_ADDR16: | |
5085 | case R_PPC_ADDR16_LO: | |
5086 | case R_PPC_ADDR16_HI: | |
5087 | case R_PPC_ADDR16_HA: | |
5088 | case R_PPC_ADDR14: | |
5089 | case R_PPC_ADDR14_BRTAKEN: | |
5090 | case R_PPC_ADDR14_BRNTAKEN: | |
5091 | case R_PPC_UADDR32: | |
5092 | case R_PPC_UADDR16: | |
0e1862bb | 5093 | if (bfd_link_pic (info)) |
87538722 AM |
5094 | break; |
5095 | ||
25dbc73a AM |
5096 | case R_PPC_PLT32: |
5097 | case R_PPC_PLTREL24: | |
87538722 | 5098 | case R_PPC_PLTREL32: |
25dbc73a AM |
5099 | case R_PPC_PLT16_LO: |
5100 | case R_PPC_PLT16_HI: | |
5101 | case R_PPC_PLT16_HA: | |
5102 | if (h != NULL) | |
5103 | { | |
a877a2b6 AM |
5104 | bfd_vma addend = 0; |
5105 | struct plt_entry *ent; | |
5106 | ||
0e1862bb | 5107 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
a877a2b6 AM |
5108 | addend = rel->r_addend; |
5109 | ent = find_plt_ent (&h->plt.plist, got2, addend); | |
32af9f6e | 5110 | if (ent != NULL && ent->plt.refcount > 0) |
a6aa5195 | 5111 | ent->plt.refcount -= 1; |
25dbc73a AM |
5112 | } |
5113 | break; | |
ee05f2fe | 5114 | |
25dbc73a AM |
5115 | default: |
5116 | break; | |
5117 | } | |
7fce784e | 5118 | } |
7fce784e AS |
5119 | return TRUE; |
5120 | } | |
25dbc73a | 5121 | \f |
3a71aa26 AM |
5122 | /* Set plt output section type, htab->tls_get_addr, and call the |
5123 | generic ELF tls_setup function. */ | |
7fce784e | 5124 | |
25dbc73a | 5125 | asection * |
5446cbdf | 5126 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5127 | { |
25dbc73a | 5128 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5129 | |
25dbc73a | 5130 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5131 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5132 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5133 | if (htab->plt_type != PLT_NEW) |
5134 | htab->params->no_tls_get_addr_opt = TRUE; | |
5135 | ||
5446cbdf | 5136 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5137 | { |
5138 | struct elf_link_hash_entry *opt, *tga; | |
5139 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5140 | FALSE, FALSE, TRUE); | |
5141 | if (opt != NULL | |
5142 | && (opt->root.type == bfd_link_hash_defined | |
5143 | || opt->root.type == bfd_link_hash_defweak)) | |
5144 | { | |
5145 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5146 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5147 | be calling __tls_get_addr via a plt call stub, then | |
5148 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5149 | tga = htab->tls_get_addr; | |
5150 | if (htab->elf.dynamic_sections_created | |
5151 | && tga != NULL | |
5152 | && (tga->type == STT_FUNC | |
5153 | || tga->needs_plt) | |
5154 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
5155 | || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT | |
5156 | && tga->root.type == bfd_link_hash_undefweak))) | |
5157 | { | |
5158 | struct plt_entry *ent; | |
32af9f6e AM |
5159 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5160 | if (ent->plt.refcount > 0) | |
5161 | break; | |
5162 | if (ent != NULL) | |
a7f2871e AM |
5163 | { |
5164 | tga->root.type = bfd_link_hash_indirect; | |
5165 | tga->root.u.i.link = &opt->root; | |
5166 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
3bd43ebc | 5167 | opt->forced_local = 0; |
a7f2871e AM |
5168 | if (opt->dynindx != -1) |
5169 | { | |
5170 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5171 | opt->dynindx = -1; | |
5172 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5173 | opt->dynstr_index); | |
5174 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5175 | return FALSE; | |
5176 | } | |
5177 | htab->tls_get_addr = opt; | |
5178 | } | |
5179 | } | |
5180 | } | |
5181 | else | |
5446cbdf | 5182 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5183 | } |
4a3dc543 | 5184 | if (htab->plt_type == PLT_NEW |
d7128ce4 AM |
5185 | && htab->plt != NULL |
5186 | && htab->plt->output_section != NULL) | |
5187 | { | |
5188 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
5189 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
5190 | } | |
5191 | ||
25dbc73a | 5192 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5193 | } |
5194 | ||
3a71aa26 AM |
5195 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5196 | HASH. */ | |
5197 | ||
5198 | static bfd_boolean | |
5199 | branch_reloc_hash_match (const bfd *ibfd, | |
5200 | const Elf_Internal_Rela *rel, | |
5201 | const struct elf_link_hash_entry *hash) | |
5202 | { | |
5203 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5204 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5205 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5206 | ||
e054468f | 5207 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5208 | { |
5209 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5210 | struct elf_link_hash_entry *h; | |
5211 | ||
5212 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5213 | while (h->root.type == bfd_link_hash_indirect | |
5214 | || h->root.type == bfd_link_hash_warning) | |
5215 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5216 | if (h == hash) | |
5217 | return TRUE; | |
5218 | } | |
5219 | return FALSE; | |
5220 | } | |
5221 | ||
25dbc73a AM |
5222 | /* Run through all the TLS relocs looking for optimization |
5223 | opportunities. */ | |
252b5132 | 5224 | |
25dbc73a AM |
5225 | bfd_boolean |
5226 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5227 | struct bfd_link_info *info) | |
252b5132 | 5228 | { |
7fce784e | 5229 | bfd *ibfd; |
25dbc73a AM |
5230 | asection *sec; |
5231 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5232 | int pass; |
252b5132 | 5233 | |
3cbc1e5e | 5234 | if (!bfd_link_executable (info)) |
25dbc73a | 5235 | return TRUE; |
252b5132 | 5236 | |
7619e7c7 | 5237 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5238 | if (htab == NULL) |
5239 | return FALSE; | |
5240 | ||
b7fcf6f6 AM |
5241 | /* Make two passes through the relocs. First time check that tls |
5242 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5243 | followed by such a call. If they are not, don't do any tls |
5244 | optimization. On the second pass twiddle tls_mask flags to | |
5245 | notify relocate_section that optimization can be done, and | |
5246 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5247 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5248 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 AM |
5249 | { |
5250 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 5251 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5252 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5253 | |
b7fcf6f6 AM |
5254 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5255 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5256 | { | |
5257 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5258 | int expecting_tls_get_addr = 0; |
252b5132 | 5259 | |
b7fcf6f6 AM |
5260 | /* Read the relocations. */ |
5261 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5262 | info->keep_memory); | |
5263 | if (relstart == NULL) | |
5264 | return FALSE; | |
7619e7c7 | 5265 | |
b7fcf6f6 AM |
5266 | relend = relstart + sec->reloc_count; |
5267 | for (rel = relstart; rel < relend; rel++) | |
5268 | { | |
5269 | enum elf_ppc_reloc_type r_type; | |
5270 | unsigned long r_symndx; | |
5271 | struct elf_link_hash_entry *h = NULL; | |
5272 | char *tls_mask; | |
5273 | char tls_set, tls_clear; | |
5274 | bfd_boolean is_local; | |
b7fcf6f6 AM |
5275 | bfd_signed_vma *got_count; |
5276 | ||
5277 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5278 | if (r_symndx >= symtab_hdr->sh_info) | |
5279 | { | |
5280 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5281 | |
b7fcf6f6 AM |
5282 | sym_hashes = elf_sym_hashes (ibfd); |
5283 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5284 | while (h->root.type == bfd_link_hash_indirect | |
5285 | || h->root.type == bfd_link_hash_warning) | |
5286 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5287 | } | |
7619e7c7 | 5288 | |
b7fcf6f6 AM |
5289 | is_local = FALSE; |
5290 | if (h == NULL | |
5291 | || !h->def_dynamic) | |
5292 | is_local = TRUE; | |
7619e7c7 | 5293 | |
b7fcf6f6 | 5294 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5295 | /* If this section has old-style __tls_get_addr calls |
5296 | without marker relocs, then check that each | |
5297 | __tls_get_addr call reloc is preceded by a reloc | |
5298 | that conceivably belongs to the __tls_get_addr arg | |
5299 | setup insn. If we don't find matching arg setup | |
5300 | relocs, don't do any tls optimization. */ | |
5301 | if (pass == 0 | |
5302 | && sec->has_tls_get_addr_call | |
5303 | && h != NULL | |
5304 | && h == htab->tls_get_addr | |
5305 | && !expecting_tls_get_addr | |
5306 | && is_branch_reloc (r_type)) | |
5307 | { | |
25f53a85 | 5308 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5309 | "TLS optimization disabled\n", |
5310 | ibfd, sec, rel->r_offset); | |
5311 | if (elf_section_data (sec)->relocs != relstart) | |
5312 | free (relstart); | |
5313 | return TRUE; | |
5314 | } | |
5315 | ||
5316 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5317 | switch (r_type) |
5318 | { | |
5319 | case R_PPC_GOT_TLSLD16: | |
5320 | case R_PPC_GOT_TLSLD16_LO: | |
5321 | expecting_tls_get_addr = 1; | |
5322 | /* Fall thru */ | |
5323 | ||
5324 | case R_PPC_GOT_TLSLD16_HI: | |
5325 | case R_PPC_GOT_TLSLD16_HA: | |
5326 | /* These relocs should never be against a symbol | |
5327 | defined in a shared lib. Leave them alone if | |
5328 | that turns out to be the case. */ | |
5329 | if (!is_local) | |
5330 | continue; | |
5331 | ||
5332 | /* LD -> LE */ | |
5333 | tls_set = 0; | |
5334 | tls_clear = TLS_LD; | |
5335 | break; | |
5336 | ||
5337 | case R_PPC_GOT_TLSGD16: | |
5338 | case R_PPC_GOT_TLSGD16_LO: | |
5339 | expecting_tls_get_addr = 1; | |
5340 | /* Fall thru */ | |
5341 | ||
5342 | case R_PPC_GOT_TLSGD16_HI: | |
5343 | case R_PPC_GOT_TLSGD16_HA: | |
5344 | if (is_local) | |
5345 | /* GD -> LE */ | |
5346 | tls_set = 0; | |
5347 | else | |
5348 | /* GD -> IE */ | |
5349 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5350 | tls_clear = TLS_GD; | |
5351 | break; | |
5352 | ||
5353 | case R_PPC_GOT_TPREL16: | |
5354 | case R_PPC_GOT_TPREL16_LO: | |
5355 | case R_PPC_GOT_TPREL16_HI: | |
5356 | case R_PPC_GOT_TPREL16_HA: | |
5357 | if (is_local) | |
5358 | { | |
5359 | /* IE -> LE */ | |
5360 | tls_set = 0; | |
5361 | tls_clear = TLS_TPREL; | |
5362 | break; | |
5363 | } | |
5364 | else | |
5365 | continue; | |
5366 | ||
32af9f6e AM |
5367 | case R_PPC_TLSGD: |
5368 | case R_PPC_TLSLD: | |
5369 | expecting_tls_get_addr = 2; | |
5370 | tls_set = 0; | |
5371 | tls_clear = 0; | |
5372 | break; | |
5373 | ||
b7fcf6f6 | 5374 | default: |
25dbc73a | 5375 | continue; |
b7fcf6f6 | 5376 | } |
25dbc73a | 5377 | |
b7fcf6f6 AM |
5378 | if (pass == 0) |
5379 | { | |
727fc41e | 5380 | if (!expecting_tls_get_addr |
32af9f6e AM |
5381 | || (expecting_tls_get_addr == 1 |
5382 | && !sec->has_tls_get_addr_call)) | |
b7fcf6f6 | 5383 | continue; |
25dbc73a | 5384 | |
3a71aa26 AM |
5385 | if (rel + 1 < relend |
5386 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5387 | htab->tls_get_addr)) | |
5388 | continue; | |
25dbc73a | 5389 | |
b7fcf6f6 AM |
5390 | /* Uh oh, we didn't find the expected call. We |
5391 | could just mark this symbol to exclude it | |
5392 | from tls optimization but it's safer to skip | |
663a1470 | 5393 | the entire optimization. */ |
25f53a85 | 5394 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5395 | "TLS optimization disabled\n"), |
5396 | ibfd, sec, rel->r_offset); | |
5397 | if (elf_section_data (sec)->relocs != relstart) | |
5398 | free (relstart); | |
5399 | return TRUE; | |
b7fcf6f6 | 5400 | } |
25dbc73a | 5401 | |
32af9f6e AM |
5402 | if (expecting_tls_get_addr) |
5403 | { | |
5404 | struct plt_entry *ent; | |
5405 | bfd_vma addend = 0; | |
5406 | ||
0e1862bb | 5407 | if (bfd_link_pic (info) |
32af9f6e AM |
5408 | && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24) |
5409 | addend = rel[1].r_addend; | |
5410 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5411 | got2, addend); | |
5412 | if (ent != NULL && ent->plt.refcount > 0) | |
5413 | ent->plt.refcount -= 1; | |
5414 | ||
5415 | if (expecting_tls_get_addr == 2) | |
5416 | continue; | |
5417 | } | |
5418 | ||
b7fcf6f6 AM |
5419 | if (h != NULL) |
5420 | { | |
5421 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5422 | got_count = &h->got.refcount; | |
5423 | } | |
5424 | else | |
5425 | { | |
b7fcf6f6 | 5426 | bfd_signed_vma *lgot_refs; |
e054468f | 5427 | struct plt_entry **local_plt; |
b7fcf6f6 | 5428 | char *lgot_masks; |
25dbc73a | 5429 | |
b7fcf6f6 AM |
5430 | if (locsyms == NULL) |
5431 | { | |
5432 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5433 | if (locsyms == NULL) | |
5434 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5435 | symtab_hdr->sh_info, | |
5436 | 0, NULL, NULL, NULL); | |
5437 | if (locsyms == NULL) | |
5438 | { | |
5439 | if (elf_section_data (sec)->relocs != relstart) | |
5440 | free (relstart); | |
5441 | return FALSE; | |
5442 | } | |
5443 | } | |
b7fcf6f6 AM |
5444 | lgot_refs = elf_local_got_refcounts (ibfd); |
5445 | if (lgot_refs == NULL) | |
5446 | abort (); | |
e054468f AM |
5447 | local_plt = (struct plt_entry **) |
5448 | (lgot_refs + symtab_hdr->sh_info); | |
5449 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5450 | tls_mask = &lgot_masks[r_symndx]; |
5451 | got_count = &lgot_refs[r_symndx]; | |
5452 | } | |
25dbc73a | 5453 | |
b7fcf6f6 AM |
5454 | if (tls_set == 0) |
5455 | { | |
5456 | /* We managed to get rid of a got entry. */ | |
5457 | if (*got_count > 0) | |
5458 | *got_count -= 1; | |
5459 | } | |
25dbc73a | 5460 | |
b7fcf6f6 AM |
5461 | *tls_mask |= tls_set; |
5462 | *tls_mask &= ~tls_clear; | |
5463 | } | |
25dbc73a | 5464 | |
b7fcf6f6 AM |
5465 | if (elf_section_data (sec)->relocs != relstart) |
5466 | free (relstart); | |
5467 | } | |
5468 | ||
5469 | if (locsyms != NULL | |
5470 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
5471 | { | |
5472 | if (!info->keep_memory) | |
5473 | free (locsyms); | |
5474 | else | |
5475 | symtab_hdr->contents = (unsigned char *) locsyms; | |
5476 | } | |
5477 | } | |
25dbc73a AM |
5478 | return TRUE; |
5479 | } | |
5480 | \f | |
625af618 AM |
5481 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
5482 | ||
5483 | static bfd_boolean | |
5484 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5485 | { | |
6061a67d | 5486 | struct elf_dyn_relocs *p; |
625af618 AM |
5487 | |
5488 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5489 | { | |
5490 | asection *s = p->sec->output_section; | |
5491 | ||
5492 | if (s != NULL | |
5493 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
5494 | == (SEC_READONLY | SEC_ALLOC))) | |
5495 | return TRUE; | |
5496 | } | |
5497 | return FALSE; | |
5498 | } | |
5499 | ||
25dbc73a AM |
5500 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5501 | regular object. The current definition is in some section of the | |
5502 | dynamic object, but we're not including those sections. We have to | |
5503 | change the definition to something the rest of the link can | |
5504 | understand. */ | |
7fce784e | 5505 | |
25dbc73a AM |
5506 | static bfd_boolean |
5507 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5508 | struct elf_link_hash_entry *h) | |
5509 | { | |
5510 | struct ppc_elf_link_hash_table *htab; | |
5511 | asection *s; | |
7fce784e | 5512 | |
25dbc73a AM |
5513 | #ifdef DEBUG |
5514 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5515 | h->root.root.string); | |
5516 | #endif | |
252b5132 | 5517 | |
25dbc73a AM |
5518 | /* Make sure we know what is going on here. */ |
5519 | htab = ppc_elf_hash_table (info); | |
5520 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5521 | && (h->needs_plt | |
91e21fb7 | 5522 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5523 | || h->u.weakdef != NULL |
5524 | || (h->def_dynamic | |
5525 | && h->ref_regular | |
5526 | && !h->def_regular))); | |
252b5132 | 5527 | |
25dbc73a AM |
5528 | /* Deal with function syms. */ |
5529 | if (h->type == STT_FUNC | |
e054468f | 5530 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5531 | || h->needs_plt) |
5532 | { | |
5533 | /* Clear procedure linkage table information for any symbol that | |
5534 | won't need a .plt entry. */ | |
a6aa5195 AM |
5535 | struct plt_entry *ent; |
5536 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5537 | if (ent->plt.refcount > 0) | |
5538 | break; | |
5539 | if (ent == NULL | |
e054468f AM |
5540 | || (h->type != STT_GNU_IFUNC |
5541 | && (SYMBOL_CALLS_LOCAL (info, h) | |
5542 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5543 | && h->root.type == bfd_link_hash_undefweak)))) | |
252b5132 | 5544 | { |
25dbc73a | 5545 | /* A PLT entry is not required/allowed when: |
252b5132 | 5546 | |
25dbc73a AM |
5547 | 1. We are not using ld.so; because then the PLT entry |
5548 | can't be set up, so we can't use one. In this case, | |
5549 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5550 | |
25dbc73a AM |
5551 | 2. GC has rendered the entry unused. |
5552 | ||
5553 | 3. We know for certain that a call to this symbol | |
5554 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5555 | h->plt.plist = NULL; |
25dbc73a | 5556 | h->needs_plt = 0; |
d1eca1e4 | 5557 | h->pointer_equality_needed = 0; |
25dbc73a | 5558 | } |
625af618 AM |
5559 | else |
5560 | { | |
d1eca1e4 AM |
5561 | /* Taking a function's address in a read/write section |
5562 | doesn't require us to define the function symbol in the | |
1009ef28 | 5563 | executable on a plt call stub. A dynamic reloc can |
d1eca1e4 AM |
5564 | be used instead. */ |
5565 | if (h->pointer_equality_needed | |
1009ef28 AM |
5566 | && h->type != STT_GNU_IFUNC |
5567 | && !htab->is_vxworks | |
5568 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
d1eca1e4 AM |
5569 | && !readonly_dynrelocs (h)) |
5570 | { | |
5571 | h->pointer_equality_needed = 0; | |
5572 | h->non_got_ref = 0; | |
5573 | } | |
5574 | ||
25f23106 AM |
5575 | /* After adjust_dynamic_symbol, non_got_ref set in the |
5576 | non-shared case means that we have allocated space in | |
5577 | .dynbss for the symbol and thus dyn_relocs for this | |
5578 | symbol should be discarded. | |
625af618 AM |
5579 | If we get here we know we are making a PLT entry for this |
5580 | symbol, and in an executable we'd normally resolve | |
5581 | relocations against this symbol to the PLT entry. Allow | |
5582 | dynamic relocs if the reference is weak, and the dynamic | |
5583 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
5584 | else if (!h->ref_regular_nonweak |
5585 | && h->non_got_ref | |
5586 | && h->type != STT_GNU_IFUNC | |
5587 | && !htab->is_vxworks | |
5588 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
5589 | && !readonly_dynrelocs (h)) | |
625af618 AM |
5590 | h->non_got_ref = 0; |
5591 | } | |
d3e454b9 | 5592 | h->protected_def = 0; |
25dbc73a | 5593 | return TRUE; |
252b5132 | 5594 | } |
25dbc73a | 5595 | else |
a6aa5195 | 5596 | h->plt.plist = NULL; |
252b5132 | 5597 | |
25dbc73a AM |
5598 | /* If this is a weak symbol, and there is a real definition, the |
5599 | processor independent code will have arranged for us to see the | |
5600 | real definition first, and we can just use the same value. */ | |
5601 | if (h->u.weakdef != NULL) | |
252b5132 | 5602 | { |
25dbc73a AM |
5603 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5604 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5605 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5606 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
5607 | if (ELIMINATE_COPY_RELOCS) | |
5608 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
5609 | return TRUE; | |
5610 | } | |
dc810e39 | 5611 | |
25dbc73a AM |
5612 | /* This is a reference to a symbol defined by a dynamic object which |
5613 | is not a function. */ | |
252b5132 | 5614 | |
25dbc73a AM |
5615 | /* If we are creating a shared library, we must presume that the |
5616 | only references to the symbol are via the global offset table. | |
5617 | For such cases we need not do anything here; the relocations will | |
5618 | be handled correctly by relocate_section. */ | |
0e1862bb | 5619 | if (bfd_link_pic (info)) |
d3e454b9 AM |
5620 | { |
5621 | h->protected_def = 0; | |
5622 | return TRUE; | |
5623 | } | |
252b5132 | 5624 | |
25dbc73a AM |
5625 | /* If there are no references to this symbol that do not use the |
5626 | GOT, we don't need to generate a copy reloc. */ | |
5627 | if (!h->non_got_ref) | |
d3e454b9 AM |
5628 | { |
5629 | h->protected_def = 0; | |
5630 | return TRUE; | |
5631 | } | |
5632 | ||
5633 | /* Protected variables do not work with .dynbss. The copy in | |
5634 | .dynbss won't be used by the shared library with the protected | |
5635 | definition for the variable. Editing to PIC, or text relocations | |
5636 | are preferable to an incorrect program. */ | |
5637 | if (h->protected_def) | |
5638 | { | |
5639 | if (ELIMINATE_COPY_RELOCS | |
5640 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
5641 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
5642 | && htab->params->pic_fixup == 0 | |
5643 | && info->disable_target_specific_optimizations <= 1) | |
5644 | htab->params->pic_fixup = 1; | |
5645 | h->non_got_ref = 0; | |
5646 | return TRUE; | |
5647 | } | |
25dbc73a | 5648 | |
a127494f AM |
5649 | /* If -z nocopyreloc was given, we won't generate them either. */ |
5650 | if (info->nocopyreloc) | |
5651 | { | |
5652 | h->non_got_ref = 0; | |
5653 | return TRUE; | |
5654 | } | |
5655 | ||
cfd2c773 NS |
5656 | /* If we didn't find any dynamic relocs in read-only sections, then |
5657 | we'll be keeping the dynamic relocs and avoiding the copy reloc. | |
5658 | We can't do this if there are any small data relocations. This | |
5659 | doesn't work on VxWorks, where we can not have dynamic | |
5660 | relocations (other than copy and jump slot relocations) in an | |
5661 | executable. */ | |
4dc4a9a5 | 5662 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 5663 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5664 | && !htab->is_vxworks |
5665 | && !h->def_regular | |
5666 | && !readonly_dynrelocs (h)) | |
25dbc73a | 5667 | { |
625af618 AM |
5668 | h->non_got_ref = 0; |
5669 | return TRUE; | |
252b5132 RH |
5670 | } |
5671 | ||
25dbc73a AM |
5672 | /* We must allocate the symbol in our .dynbss section, which will |
5673 | become part of the .bss section of the executable. There will be | |
5674 | an entry for this symbol in the .dynsym section. The dynamic | |
5675 | object will contain position independent code, so all references | |
5676 | from the dynamic object to this symbol will go through the global | |
5677 | offset table. The dynamic linker will use the .dynsym entry to | |
5678 | determine the address it must put in the global offset table, so | |
5679 | both the dynamic object and the regular object will refer to the | |
5680 | same memory location for the variable. | |
5681 | ||
4dc4a9a5 DJ |
5682 | Of course, if the symbol is referenced using SDAREL relocs, we |
5683 | must instead allocate it in .sbss. */ | |
25dbc73a | 5684 | |
4dc4a9a5 | 5685 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5686 | s = htab->dynsbss; |
5687 | else | |
5688 | s = htab->dynbss; | |
5689 | BFD_ASSERT (s != NULL); | |
5690 | ||
5691 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
5692 | copy the initial value out of the dynamic object and into the | |
5693 | runtime process image. We need to remember the offset into the | |
5694 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 5695 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
5696 | { |
5697 | asection *srel; | |
5698 | ||
4dc4a9a5 | 5699 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5700 | srel = htab->relsbss; |
5701 | else | |
5702 | srel = htab->relbss; | |
5703 | BFD_ASSERT (srel != NULL); | |
5704 | srel->size += sizeof (Elf32_External_Rela); | |
5705 | h->needs_copy = 1; | |
5706 | } | |
7619e7c7 | 5707 | |
6cabe1ea | 5708 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
5709 | } |
5710 | \f | |
ac39eb42 AM |
5711 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5712 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5713 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5714 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5715 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5716 | |
5717 | static bfd_boolean | |
5718 | add_stub_sym (struct plt_entry *ent, | |
5719 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5720 | struct bfd_link_info *info) |
0ba07910 AM |
5721 | { |
5722 | struct elf_link_hash_entry *sh; | |
5723 | size_t len1, len2, len3; | |
5724 | char *name; | |
ac39eb42 AM |
5725 | const char *stub; |
5726 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5727 | ||
0e1862bb | 5728 | if (bfd_link_pic (info)) |
ac39eb42 AM |
5729 | stub = ".plt_pic32."; |
5730 | else | |
5731 | stub = ".plt_call32."; | |
0ba07910 AM |
5732 | |
5733 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5734 | len2 = strlen (stub); |
0ba07910 AM |
5735 | len3 = 0; |
5736 | if (ent->sec) | |
5737 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5738 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5739 | if (name == NULL) |
5740 | return FALSE; | |
5741 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5742 | if (ent->sec) | |
5743 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5744 | memcpy (name + 8 + len3, stub, len2); |
5745 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5746 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5747 | if (sh == NULL) | |
5748 | return FALSE; | |
5749 | if (sh->root.type == bfd_link_hash_new) | |
5750 | { | |
5751 | sh->root.type = bfd_link_hash_defined; | |
5752 | sh->root.u.def.section = htab->glink; | |
5753 | sh->root.u.def.value = ent->glink_offset; | |
5754 | sh->ref_regular = 1; | |
5755 | sh->def_regular = 1; | |
5756 | sh->ref_regular_nonweak = 1; | |
5757 | sh->forced_local = 1; | |
5758 | sh->non_elf = 0; | |
2ec55de3 | 5759 | sh->root.linker_def = 1; |
0ba07910 AM |
5760 | } |
5761 | return TRUE; | |
5762 | } | |
5763 | ||
3b36f7e6 AM |
5764 | /* Allocate NEED contiguous space in .got, and return the offset. |
5765 | Handles allocation of the got header when crossing 32k. */ | |
5766 | ||
5767 | static bfd_vma | |
5768 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5769 | { | |
5770 | bfd_vma where; | |
4a3dc543 | 5771 | unsigned int max_before_header; |
3b36f7e6 | 5772 | |
4a3dc543 | 5773 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
5774 | { |
5775 | where = htab->got->size; | |
5776 | htab->got->size += need; | |
5777 | } | |
3b36f7e6 AM |
5778 | else |
5779 | { | |
4a3dc543 RS |
5780 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5781 | if (need <= htab->got_gap) | |
3b36f7e6 | 5782 | { |
4a3dc543 RS |
5783 | where = max_before_header - htab->got_gap; |
5784 | htab->got_gap -= need; | |
5785 | } | |
5786 | else | |
5787 | { | |
5788 | if (htab->got->size + need > max_before_header | |
5789 | && htab->got->size <= max_before_header) | |
5790 | { | |
5791 | htab->got_gap = max_before_header - htab->got->size; | |
5792 | htab->got->size = max_before_header + htab->got_header_size; | |
5793 | } | |
5794 | where = htab->got->size; | |
5795 | htab->got->size += need; | |
3b36f7e6 | 5796 | } |
3b36f7e6 AM |
5797 | } |
5798 | return where; | |
5799 | } | |
5800 | ||
25dbc73a | 5801 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5802 | |
b34976b6 | 5803 | static bfd_boolean |
25dbc73a | 5804 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5805 | { |
25dbc73a AM |
5806 | struct bfd_link_info *info = inf; |
5807 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5808 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5809 | struct elf_dyn_relocs *p; |
252b5132 | 5810 | |
25dbc73a | 5811 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5812 | return TRUE; |
252b5132 | 5813 | |
7619e7c7 | 5814 | htab = ppc_elf_hash_table (info); |
e054468f AM |
5815 | if (htab->elf.dynamic_sections_created |
5816 | || h->type == STT_GNU_IFUNC) | |
252b5132 | 5817 | { |
a6aa5195 AM |
5818 | struct plt_entry *ent; |
5819 | bfd_boolean doneone = FALSE; | |
28e99bb6 | 5820 | bfd_vma plt_offset = 0, glink_offset = 0; |
e054468f | 5821 | bfd_boolean dyn; |
28e99bb6 | 5822 | |
a6aa5195 AM |
5823 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5824 | if (ent->plt.refcount > 0) | |
5825 | { | |
5826 | /* Make sure this symbol is output as a dynamic symbol. */ | |
5827 | if (h->dynindx == -1 | |
e054468f AM |
5828 | && !h->forced_local |
5829 | && !h->def_regular | |
5830 | && htab->elf.dynamic_sections_created) | |
a6aa5195 AM |
5831 | { |
5832 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5833 | return FALSE; | |
5834 | } | |
252b5132 | 5835 | |
e054468f | 5836 | dyn = htab->elf.dynamic_sections_created; |
0e1862bb | 5837 | if (bfd_link_pic (info) |
e054468f AM |
5838 | || h->type == STT_GNU_IFUNC |
5839 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
a6aa5195 AM |
5840 | { |
5841 | asection *s = htab->plt; | |
25f23106 | 5842 | if (!dyn || h->dynindx == -1) |
e054468f | 5843 | s = htab->iplt; |
7619e7c7 | 5844 | |
25f23106 | 5845 | if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1) |
a6aa5195 | 5846 | { |
a6aa5195 | 5847 | if (!doneone) |
28e99bb6 AM |
5848 | { |
5849 | plt_offset = s->size; | |
5850 | s->size += 4; | |
5851 | } | |
5852 | ent->plt.offset = plt_offset; | |
d7128ce4 | 5853 | |
a6aa5195 | 5854 | s = htab->glink; |
0e1862bb | 5855 | if (!doneone || bfd_link_pic (info)) |
28e99bb6 AM |
5856 | { |
5857 | glink_offset = s->size; | |
5858 | s->size += GLINK_ENTRY_SIZE; | |
a7f2871e | 5859 | if (h == htab->tls_get_addr |
5446cbdf | 5860 | && !htab->params->no_tls_get_addr_opt) |
a7f2871e | 5861 | s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE; |
28e99bb6 AM |
5862 | } |
5863 | if (!doneone | |
0e1862bb | 5864 | && !bfd_link_pic (info) |
625af618 | 5865 | && h->def_dynamic |
a6aa5195 AM |
5866 | && !h->def_regular) |
5867 | { | |
5868 | h->root.u.def.section = s; | |
28e99bb6 | 5869 | h->root.u.def.value = glink_offset; |
a6aa5195 | 5870 | } |
28e99bb6 | 5871 | ent->glink_offset = glink_offset; |
0ba07910 | 5872 | |
5446cbdf | 5873 | if (htab->params->emit_stub_syms |
ac39eb42 | 5874 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 5875 | return FALSE; |
a6aa5195 AM |
5876 | } |
5877 | else | |
5878 | { | |
a6aa5195 AM |
5879 | if (!doneone) |
5880 | { | |
28e99bb6 AM |
5881 | /* If this is the first .plt entry, make room |
5882 | for the special first entry. */ | |
5883 | if (s->size == 0) | |
9d8504b1 | 5884 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
5885 | |
5886 | /* The PowerPC PLT is actually composed of two | |
5887 | parts, the first part is 2 words (for a load | |
5888 | and a jump), and then there is a remaining | |
5889 | word available at the end. */ | |
9d8504b1 PB |
5890 | plt_offset = (htab->plt_initial_entry_size |
5891 | + (htab->plt_slot_size | |
5892 | * ((s->size | |
5893 | - htab->plt_initial_entry_size) | |
5894 | / htab->plt_entry_size))); | |
28e99bb6 AM |
5895 | |
5896 | /* If this symbol is not defined in a regular | |
5897 | file, and we are not generating a shared | |
5b914448 | 5898 | library, then set the symbol to this location |
de972ffa AM |
5899 | in the .plt. This is to avoid text |
5900 | relocations, and is required to make | |
28e99bb6 AM |
5901 | function pointers compare as equal between |
5902 | the normal executable and the shared library. */ | |
0e1862bb | 5903 | if (! bfd_link_pic (info) |
625af618 | 5904 | && h->def_dynamic |
28e99bb6 AM |
5905 | && !h->def_regular) |
5906 | { | |
5907 | h->root.u.def.section = s; | |
5908 | h->root.u.def.value = plt_offset; | |
5909 | } | |
5910 | ||
9d8504b1 PB |
5911 | /* Make room for this entry. */ |
5912 | s->size += htab->plt_entry_size; | |
5913 | /* After the 8192nd entry, room for two entries | |
5914 | is allocated. */ | |
4a3dc543 | 5915 | if (htab->plt_type == PLT_OLD |
9d8504b1 PB |
5916 | && (s->size - htab->plt_initial_entry_size) |
5917 | / htab->plt_entry_size | |
5918 | > PLT_NUM_SINGLE_ENTRIES) | |
5919 | s->size += htab->plt_entry_size; | |
a6aa5195 | 5920 | } |
28e99bb6 | 5921 | ent->plt.offset = plt_offset; |
a6aa5195 | 5922 | } |
25dbc73a | 5923 | |
a6aa5195 AM |
5924 | /* We also need to make an entry in the .rela.plt section. */ |
5925 | if (!doneone) | |
5926 | { | |
25f23106 AM |
5927 | if (!htab->elf.dynamic_sections_created |
5928 | || h->dynindx == -1) | |
e054468f AM |
5929 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
5930 | else | |
9d8504b1 | 5931 | { |
e054468f AM |
5932 | htab->relplt->size += sizeof (Elf32_External_Rela); |
5933 | ||
5934 | if (htab->plt_type == PLT_VXWORKS) | |
9d8504b1 | 5935 | { |
e054468f | 5936 | /* Allocate space for the unloaded relocations. */ |
0e1862bb | 5937 | if (!bfd_link_pic (info) |
e054468f | 5938 | && htab->elf.dynamic_sections_created) |
9d8504b1 | 5939 | { |
e054468f AM |
5940 | if (ent->plt.offset |
5941 | == (bfd_vma) htab->plt_initial_entry_size) | |
5942 | { | |
5943 | htab->srelplt2->size | |
5944 | += (sizeof (Elf32_External_Rela) | |
5945 | * VXWORKS_PLTRESOLVE_RELOCS); | |
5946 | } | |
5947 | ||
9d8504b1 | 5948 | htab->srelplt2->size |
e054468f AM |
5949 | += (sizeof (Elf32_External_Rela) |
5950 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
9d8504b1 PB |
5951 | } |
5952 | ||
e054468f AM |
5953 | /* Every PLT entry has an associated GOT entry in |
5954 | .got.plt. */ | |
5955 | htab->sgotplt->size += 4; | |
9d8504b1 | 5956 | } |
9d8504b1 | 5957 | } |
a6aa5195 AM |
5958 | doneone = TRUE; |
5959 | } | |
5960 | } | |
5961 | else | |
5962 | ent->plt.offset = (bfd_vma) -1; | |
a6aa5195 | 5963 | } |
2ce859a1 AM |
5964 | else |
5965 | ent->plt.offset = (bfd_vma) -1; | |
5966 | ||
5967 | if (!doneone) | |
5968 | { | |
5969 | h->plt.plist = NULL; | |
5970 | h->needs_plt = 0; | |
5971 | } | |
25dbc73a AM |
5972 | } |
5973 | else | |
5974 | { | |
a6aa5195 | 5975 | h->plt.plist = NULL; |
25dbc73a AM |
5976 | h->needs_plt = 0; |
5977 | } | |
5978 | ||
5979 | eh = (struct ppc_elf_link_hash_entry *) h; | |
d3e454b9 AM |
5980 | if (eh->elf.got.refcount > 0 |
5981 | || (ELIMINATE_COPY_RELOCS | |
5982 | && !eh->elf.def_regular | |
5983 | && eh->elf.protected_def | |
5984 | && eh->has_addr16_ha | |
5985 | && eh->has_addr16_lo | |
5986 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5987 | { |
d6e14abc AM |
5988 | bfd_boolean dyn; |
5989 | unsigned int need; | |
5990 | ||
25dbc73a AM |
5991 | /* Make sure this symbol is output as a dynamic symbol. */ |
5992 | if (eh->elf.dynindx == -1 | |
b099ab9f | 5993 | && !eh->elf.forced_local |
25f23106 | 5994 | && eh->elf.type != STT_GNU_IFUNC |
b099ab9f | 5995 | && htab->elf.dynamic_sections_created) |
25dbc73a AM |
5996 | { |
5997 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 5998 | return FALSE; |
25dbc73a | 5999 | } |
252b5132 | 6000 | |
d6e14abc AM |
6001 | need = 0; |
6002 | if ((eh->tls_mask & TLS_TLS) != 0) | |
25dbc73a | 6003 | { |
d6e14abc | 6004 | if ((eh->tls_mask & TLS_LD) != 0) |
252b5132 | 6005 | { |
d6e14abc AM |
6006 | if (!eh->elf.def_dynamic) |
6007 | /* We'll just use htab->tlsld_got.offset. This should | |
6008 | always be the case. It's a little odd if we have | |
6009 | a local dynamic reloc against a non-local symbol. */ | |
6010 | htab->tlsld_got.refcount += 1; | |
6011 | else | |
3b36f7e6 | 6012 | need += 8; |
252b5132 | 6013 | } |
d6e14abc AM |
6014 | if ((eh->tls_mask & TLS_GD) != 0) |
6015 | need += 8; | |
6016 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6017 | need += 4; | |
6018 | if ((eh->tls_mask & TLS_DTPREL) != 0) | |
3b36f7e6 | 6019 | need += 4; |
d6e14abc AM |
6020 | } |
6021 | else | |
6022 | need += 4; | |
6023 | if (need == 0) | |
6024 | eh->elf.got.offset = (bfd_vma) -1; | |
6025 | else | |
6026 | { | |
3b36f7e6 | 6027 | eh->elf.got.offset = allocate_got (htab, need); |
25dbc73a | 6028 | dyn = htab->elf.dynamic_sections_created; |
0e1862bb | 6029 | if ((bfd_link_pic (info) |
25dbc73a AM |
6030 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) |
6031 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
6032 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 6033 | { |
91e21fb7 | 6034 | asection *rsec = htab->relgot; |
0bed072f AM |
6035 | |
6036 | if (eh->elf.type == STT_GNU_IFUNC) | |
6037 | rsec = htab->reliplt; | |
3b36f7e6 AM |
6038 | /* All the entries we allocated need relocs. |
6039 | Except LD only needs one. */ | |
d6e14abc AM |
6040 | if ((eh->tls_mask & TLS_LD) != 0 |
6041 | && eh->elf.def_dynamic) | |
3b36f7e6 | 6042 | need -= 4; |
25f23106 | 6043 | rsec->size += need * (sizeof (Elf32_External_Rela) / 4); |
252b5132 | 6044 | } |
25dbc73a AM |
6045 | } |
6046 | } | |
6047 | else | |
6048 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 6049 | |
b099ab9f | 6050 | if (eh->dyn_relocs == NULL |
de972ffa | 6051 | || !htab->elf.dynamic_sections_created) |
25dbc73a | 6052 | return TRUE; |
252b5132 | 6053 | |
25dbc73a AM |
6054 | /* In the shared -Bsymbolic case, discard space allocated for |
6055 | dynamic pc-relative relocs against symbols which turn out to be | |
6056 | defined in regular objects. For the normal shared case, discard | |
6057 | space for relocs that have become local due to symbol visibility | |
6058 | changes. */ | |
6059 | ||
0e1862bb | 6060 | if (bfd_link_pic (info)) |
25dbc73a AM |
6061 | { |
6062 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 6063 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
6064 | generated via assembly. We want calls to protected symbols to |
6065 | resolve directly to the function rather than going via the plt. | |
6066 | If people want function pointer comparisons to work as expected | |
6067 | then they should avoid writing weird assembly. */ | |
6068 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
6069 | { | |
6061a67d | 6070 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
6071 | |
6072 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 6073 | { |
25dbc73a AM |
6074 | p->count -= p->pc_count; |
6075 | p->pc_count = 0; | |
6076 | if (p->count == 0) | |
6077 | *pp = p->next; | |
6078 | else | |
6079 | pp = &p->next; | |
252b5132 | 6080 | } |
25dbc73a | 6081 | } |
252b5132 | 6082 | |
3348747a NS |
6083 | if (htab->is_vxworks) |
6084 | { | |
6061a67d | 6085 | struct elf_dyn_relocs **pp; |
3348747a NS |
6086 | |
6087 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
6088 | { | |
6089 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
6090 | *pp = p->next; | |
6091 | else | |
6092 | pp = &p->next; | |
6093 | } | |
6094 | } | |
6095 | ||
89200bf8 AM |
6096 | /* Discard relocs on undefined symbols that must be local. */ |
6097 | if (eh->dyn_relocs != NULL | |
6098 | && h->root.type == bfd_link_hash_undefined | |
6099 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
6100 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
6101 | eh->dyn_relocs = NULL; | |
6102 | ||
25dbc73a AM |
6103 | /* Also discard relocs on undefined weak syms with non-default |
6104 | visibility. */ | |
cab87ef9 AM |
6105 | if (eh->dyn_relocs != NULL |
6106 | && h->root.type == bfd_link_hash_undefweak) | |
25dbc73a | 6107 | { |
dfbb6ac9 AM |
6108 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
6109 | eh->dyn_relocs = NULL; | |
6110 | ||
6111 | /* Make sure undefined weak symbols are output as a dynamic | |
6112 | symbol in PIEs. */ | |
6113 | else if (h->dynindx == -1 | |
e054468f AM |
6114 | && !h->forced_local |
6115 | && !h->def_regular) | |
dfbb6ac9 AM |
6116 | { |
6117 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6118 | return FALSE; | |
6119 | } | |
25dbc73a AM |
6120 | } |
6121 | } | |
6122 | else if (ELIMINATE_COPY_RELOCS) | |
6123 | { | |
6124 | /* For the non-shared case, discard space for relocs against | |
6125 | symbols which turn out to need copy relocs or are not | |
6126 | dynamic. */ | |
7619e7c7 | 6127 | |
25dbc73a | 6128 | if (!h->non_got_ref |
d3e454b9 AM |
6129 | && !h->def_regular |
6130 | && !(h->protected_def | |
6131 | && eh->has_addr16_ha | |
6132 | && eh->has_addr16_lo | |
6133 | && htab->params->pic_fixup > 0)) | |
25dbc73a AM |
6134 | { |
6135 | /* Make sure this symbol is output as a dynamic symbol. | |
6136 | Undefined weak syms won't yet be marked as dynamic. */ | |
6137 | if (h->dynindx == -1 | |
25f23106 | 6138 | && !h->forced_local) |
25dbc73a AM |
6139 | { |
6140 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6141 | return FALSE; | |
6142 | } | |
7619e7c7 | 6143 | |
25dbc73a AM |
6144 | /* If that succeeded, we know we'll be keeping all the |
6145 | relocs. */ | |
6146 | if (h->dynindx != -1) | |
6147 | goto keep; | |
6148 | } | |
252b5132 | 6149 | |
25dbc73a | 6150 | eh->dyn_relocs = NULL; |
252b5132 | 6151 | |
25dbc73a AM |
6152 | keep: ; |
6153 | } | |
252b5132 | 6154 | |
25dbc73a AM |
6155 | /* Finally, allocate space. */ |
6156 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6157 | { | |
6158 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 6159 | if (eh->elf.type == STT_GNU_IFUNC) |
25f23106 | 6160 | sreloc = htab->reliplt; |
25dbc73a AM |
6161 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
6162 | } | |
252b5132 | 6163 | |
25dbc73a AM |
6164 | return TRUE; |
6165 | } | |
7619e7c7 | 6166 | |
625af618 AM |
6167 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6168 | read-only sections. */ | |
7619e7c7 | 6169 | |
25dbc73a | 6170 | static bfd_boolean |
625af618 | 6171 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) |
25dbc73a | 6172 | { |
25dbc73a AM |
6173 | if (h->root.type == bfd_link_hash_indirect) |
6174 | return TRUE; | |
252b5132 | 6175 | |
625af618 | 6176 | if (readonly_dynrelocs (h)) |
25dbc73a | 6177 | { |
625af618 | 6178 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; |
ee05f2fe | 6179 | |
625af618 AM |
6180 | /* Not an error, just cut short the traversal. */ |
6181 | return FALSE; | |
25dbc73a AM |
6182 | } |
6183 | return TRUE; | |
6184 | } | |
6185 | ||
6177242a AM |
6186 | static const unsigned char glink_eh_frame_cie[] = |
6187 | { | |
6188 | 0, 0, 0, 16, /* length. */ | |
6189 | 0, 0, 0, 0, /* id. */ | |
6190 | 1, /* CIE version. */ | |
6191 | 'z', 'R', 0, /* Augmentation string. */ | |
6192 | 4, /* Code alignment. */ | |
6193 | 0x7c, /* Data alignment. */ | |
6194 | 65, /* RA reg. */ | |
6195 | 1, /* Augmentation size. */ | |
6196 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6197 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6198 | }; | |
6199 | ||
25dbc73a AM |
6200 | /* Set the sizes of the dynamic sections. */ |
6201 | ||
6202 | static bfd_boolean | |
93d1b056 | 6203 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6204 | struct bfd_link_info *info) |
6205 | { | |
6206 | struct ppc_elf_link_hash_table *htab; | |
6207 | asection *s; | |
6208 | bfd_boolean relocs; | |
6209 | bfd *ibfd; | |
7fce784e | 6210 | |
252b5132 | 6211 | #ifdef DEBUG |
25dbc73a | 6212 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6213 | #endif |
252b5132 | 6214 | |
25dbc73a AM |
6215 | htab = ppc_elf_hash_table (info); |
6216 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6217 | |
25dbc73a AM |
6218 | if (elf_hash_table (info)->dynamic_sections_created) |
6219 | { | |
6220 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 6221 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 6222 | { |
3d4d4302 | 6223 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6224 | BFD_ASSERT (s != NULL); |
6225 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6226 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6227 | } | |
6228 | } | |
252b5132 | 6229 | |
4a3dc543 | 6230 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6231 | htab->got_header_size = 16; |
4a3dc543 | 6232 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6233 | htab->got_header_size = 12; |
252b5132 | 6234 | |
25dbc73a AM |
6235 | /* Set up .got offsets for local syms, and space for local dynamic |
6236 | relocs. */ | |
c72f2fb2 | 6237 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6238 | { |
6239 | bfd_signed_vma *local_got; | |
6240 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6241 | struct plt_entry **local_plt; |
6242 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6243 | char *lgot_masks; |
6244 | bfd_size_type locsymcount; | |
6245 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6246 | |
0c8d6e5c | 6247 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6248 | continue; |
7fce784e | 6249 | |
25dbc73a AM |
6250 | for (s = ibfd->sections; s != NULL; s = s->next) |
6251 | { | |
f95f8542 | 6252 | struct ppc_dyn_relocs *p; |
252b5132 | 6253 | |
f95f8542 | 6254 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6255 | elf_section_data (s)->local_dynrel); |
6256 | p != NULL; | |
6257 | p = p->next) | |
6258 | { | |
6259 | if (!bfd_is_abs_section (p->sec) | |
6260 | && bfd_is_abs_section (p->sec->output_section)) | |
6261 | { | |
6262 | /* Input section has been discarded, either because | |
6263 | it is a copy of a linkonce section or due to | |
6264 | linker script /DISCARD/, so we'll be discarding | |
6265 | the relocs too. */ | |
7fce784e | 6266 | } |
3348747a NS |
6267 | else if (htab->is_vxworks |
6268 | && strcmp (p->sec->output_section->name, | |
6269 | ".tls_vars") == 0) | |
6270 | { | |
6271 | /* Relocations in vxworks .tls_vars sections are | |
6272 | handled specially by the loader. */ | |
6273 | } | |
25dbc73a | 6274 | else if (p->count != 0) |
7fce784e | 6275 | { |
25f23106 | 6276 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6277 | if (p->ifunc) |
25f23106 AM |
6278 | sreloc = htab->reliplt; |
6279 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
25dbc73a AM |
6280 | if ((p->sec->output_section->flags |
6281 | & (SEC_READONLY | SEC_ALLOC)) | |
6282 | == (SEC_READONLY | SEC_ALLOC)) | |
6283 | info->flags |= DF_TEXTREL; | |
7fce784e | 6284 | } |
252b5132 | 6285 | } |
252b5132 | 6286 | } |
252b5132 | 6287 | |
25dbc73a AM |
6288 | local_got = elf_local_got_refcounts (ibfd); |
6289 | if (!local_got) | |
6290 | continue; | |
252b5132 | 6291 | |
0ffa91dd | 6292 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6293 | locsymcount = symtab_hdr->sh_info; |
6294 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6295 | local_plt = (struct plt_entry **) end_local_got; |
6296 | end_local_plt = local_plt + locsymcount; | |
6297 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6298 | |
25dbc73a AM |
6299 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6300 | if (*local_got > 0) | |
6301 | { | |
d6e14abc AM |
6302 | unsigned int need = 0; |
6303 | if ((*lgot_masks & TLS_TLS) != 0) | |
25dbc73a | 6304 | { |
d6e14abc AM |
6305 | if ((*lgot_masks & TLS_GD) != 0) |
6306 | need += 8; | |
6307 | if ((*lgot_masks & TLS_LD) != 0) | |
6308 | htab->tlsld_got.refcount += 1; | |
6309 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6310 | need += 4; | |
6311 | if ((*lgot_masks & TLS_DTPREL) != 0) | |
6312 | need += 4; | |
25dbc73a | 6313 | } |
d6e14abc AM |
6314 | else |
6315 | need += 4; | |
6316 | if (need == 0) | |
6317 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6318 | else |
6319 | { | |
3b36f7e6 | 6320 | *local_got = allocate_got (htab, need); |
0e1862bb | 6321 | if (bfd_link_pic (info)) |
0bed072f AM |
6322 | { |
6323 | asection *srel = htab->relgot; | |
6324 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
6325 | srel = htab->reliplt; | |
6326 | srel->size += need * (sizeof (Elf32_External_Rela) / 4); | |
6327 | } | |
25dbc73a AM |
6328 | } |
6329 | } | |
6330 | else | |
6331 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6332 | |
6333 | if (htab->is_vxworks) | |
6334 | continue; | |
6335 | ||
6336 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
6337 | for (; local_plt < end_local_plt; ++local_plt) | |
6338 | { | |
6339 | struct plt_entry *ent; | |
6340 | bfd_boolean doneone = FALSE; | |
6341 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6342 | ||
6343 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6344 | if (ent->plt.refcount > 0) | |
6345 | { | |
91d6fa6a | 6346 | s = htab->iplt; |
e054468f AM |
6347 | |
6348 | if (!doneone) | |
6349 | { | |
6350 | plt_offset = s->size; | |
6351 | s->size += 4; | |
6352 | } | |
6353 | ent->plt.offset = plt_offset; | |
6354 | ||
6355 | s = htab->glink; | |
0e1862bb | 6356 | if (!doneone || bfd_link_pic (info)) |
e054468f AM |
6357 | { |
6358 | glink_offset = s->size; | |
6359 | s->size += GLINK_ENTRY_SIZE; | |
6360 | } | |
6361 | ent->glink_offset = glink_offset; | |
6362 | ||
6363 | if (!doneone) | |
6364 | { | |
25f23106 | 6365 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
6366 | doneone = TRUE; |
6367 | } | |
6368 | } | |
6369 | else | |
6370 | ent->plt.offset = (bfd_vma) -1; | |
6371 | } | |
25dbc73a | 6372 | } |
252b5132 | 6373 | |
b7fcf6f6 AM |
6374 | /* Allocate space for global sym dynamic relocs. */ |
6375 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6376 | ||
3b36f7e6 AM |
6377 | if (htab->tlsld_got.refcount > 0) |
6378 | { | |
6379 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 6380 | if (bfd_link_pic (info)) |
3b36f7e6 AM |
6381 | htab->relgot->size += sizeof (Elf32_External_Rela); |
6382 | } | |
6383 | else | |
6384 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6385 | ||
4a3dc543 | 6386 | if (htab->got != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6387 | { |
6388 | unsigned int g_o_t = 32768; | |
6389 | ||
4d962050 AM |
6390 | /* If we haven't allocated the header, do so now. When we get here, |
6391 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6392 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6393 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
6394 | if (htab->got->size <= 32768) |
6395 | { | |
6396 | g_o_t = htab->got->size; | |
4a3dc543 | 6397 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6398 | g_o_t += 4; |
3b36f7e6 AM |
6399 | htab->got->size += htab->got_header_size; |
6400 | } | |
3b36f7e6 AM |
6401 | |
6402 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6403 | } | |
0e1862bb | 6404 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
6405 | { |
6406 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6407 | |
6408 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6409 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6410 | } |
15bfcc77 AM |
6411 | if (info->emitrelocations) |
6412 | { | |
6413 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6414 | ||
6415 | if (sda != NULL && sda->ref_regular) | |
6416 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6417 | sda = htab->sdata[1].sym; | |
6418 | if (sda != NULL && sda->ref_regular) | |
6419 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6420 | } | |
3b36f7e6 | 6421 | |
e054468f AM |
6422 | if (htab->glink != NULL |
6423 | && htab->glink->size != 0 | |
6424 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6425 | { |
6426 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
6427 | /* Space for the branch table. */ |
6428 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
6429 | /* Pad out to align the start of PLTresolve. */ | |
5446cbdf AM |
6430 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6431 | ? 63 : 15); | |
d7128ce4 | 6432 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6433 | |
5446cbdf | 6434 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6435 | { |
6436 | struct elf_link_hash_entry *sh; | |
6437 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6438 | TRUE, FALSE, FALSE); | |
6439 | if (sh == NULL) | |
6440 | return FALSE; | |
6441 | if (sh->root.type == bfd_link_hash_new) | |
6442 | { | |
6443 | sh->root.type = bfd_link_hash_defined; | |
6444 | sh->root.u.def.section = htab->glink; | |
6445 | sh->root.u.def.value = htab->glink_pltresolve; | |
6446 | sh->ref_regular = 1; | |
6447 | sh->def_regular = 1; | |
6448 | sh->ref_regular_nonweak = 1; | |
6449 | sh->forced_local = 1; | |
6450 | sh->non_elf = 0; | |
2ec55de3 | 6451 | sh->root.linker_def = 1; |
0ba07910 AM |
6452 | } |
6453 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6454 | TRUE, FALSE, FALSE); | |
6455 | if (sh == NULL) | |
6456 | return FALSE; | |
6457 | if (sh->root.type == bfd_link_hash_new) | |
6458 | { | |
6459 | sh->root.type = bfd_link_hash_defined; | |
6460 | sh->root.u.def.section = htab->glink; | |
6461 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6462 | sh->ref_regular = 1; | |
6463 | sh->def_regular = 1; | |
6464 | sh->ref_regular_nonweak = 1; | |
6465 | sh->forced_local = 1; | |
6466 | sh->non_elf = 0; | |
2ec55de3 | 6467 | sh->root.linker_def = 1; |
0ba07910 AM |
6468 | } |
6469 | } | |
d7128ce4 AM |
6470 | } |
6471 | ||
6177242a AM |
6472 | if (htab->glink != NULL |
6473 | && htab->glink->size != 0 | |
6474 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6475 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6476 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6477 | { |
6478 | s = htab->glink_eh_frame; | |
6479 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 6480 | if (bfd_link_pic (info)) |
6177242a AM |
6481 | { |
6482 | s->size += 4; | |
6483 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6484 | s->size += 4; | |
6485 | } | |
6486 | } | |
6487 | ||
25dbc73a AM |
6488 | /* We've now determined the sizes of the various dynamic sections. |
6489 | Allocate memory for them. */ | |
6490 | relocs = FALSE; | |
6491 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6492 | { |
9d8504b1 PB |
6493 | bfd_boolean strip_section = TRUE; |
6494 | ||
25dbc73a AM |
6495 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6496 | continue; | |
252b5132 | 6497 | |
25dbc73a | 6498 | if (s == htab->plt |
e054468f | 6499 | || s == htab->got) |
25dbc73a | 6500 | { |
9d8504b1 PB |
6501 | /* We'd like to strip these sections if they aren't needed, but if |
6502 | we've exported dynamic symbols from them we must leave them. | |
6503 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6504 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6505 | strip_section = FALSE; |
25dbc73a AM |
6506 | /* Strip this section if we don't need it; see the |
6507 | comment below. */ | |
6508 | } | |
e054468f AM |
6509 | else if (s == htab->iplt |
6510 | || s == htab->glink | |
6177242a | 6511 | || s == htab->glink_eh_frame |
e054468f AM |
6512 | || s == htab->sgotplt |
6513 | || s == htab->sbss | |
6514 | || s == htab->dynbss | |
15bfcc77 | 6515 | || s == htab->dynsbss) |
25dbc73a | 6516 | { |
c9a2f333 | 6517 | /* Strip these too. */ |
25dbc73a | 6518 | } |
15bfcc77 AM |
6519 | else if (s == htab->sdata[0].section |
6520 | || s == htab->sdata[1].section) | |
6521 | { | |
6522 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6523 | } | |
a0f49396 NC |
6524 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6525 | ".rela")) | |
25dbc73a | 6526 | { |
c456f082 | 6527 | if (s->size != 0) |
25dbc73a AM |
6528 | { |
6529 | /* Remember whether there are any relocation sections. */ | |
6530 | relocs = TRUE; | |
252b5132 | 6531 | |
25dbc73a AM |
6532 | /* We use the reloc_count field as a counter if we need |
6533 | to copy relocs into the output file. */ | |
6534 | s->reloc_count = 0; | |
252b5132 RH |
6535 | } |
6536 | } | |
25dbc73a AM |
6537 | else |
6538 | { | |
6539 | /* It's not one of our sections, so don't allocate space. */ | |
6540 | continue; | |
6541 | } | |
252b5132 | 6542 | |
9d8504b1 | 6543 | if (s->size == 0 && strip_section) |
25dbc73a | 6544 | { |
c456f082 AM |
6545 | /* If we don't need this section, strip it from the |
6546 | output file. This is mostly to handle .rela.bss and | |
6547 | .rela.plt. We must create both sections in | |
6548 | create_dynamic_sections, because they must be created | |
6549 | before the linker maps input sections to output | |
6550 | sections. The linker does that before | |
6551 | adjust_dynamic_symbol is called, and it is that | |
6552 | function which decides whether anything needs to go | |
6553 | into these sections. */ | |
8423293d | 6554 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
6555 | continue; |
6556 | } | |
7fce784e | 6557 | |
d7128ce4 | 6558 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
6559 | continue; |
6560 | ||
25dbc73a AM |
6561 | /* Allocate memory for the section contents. */ |
6562 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
6563 | if (s->contents == NULL) | |
6564 | return FALSE; | |
6565 | } | |
252b5132 | 6566 | |
25dbc73a | 6567 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 6568 | { |
25dbc73a AM |
6569 | /* Add some entries to the .dynamic section. We fill in the |
6570 | values later, in ppc_elf_finish_dynamic_sections, but we | |
6571 | must add the entries now so that we get the correct size for | |
6572 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6573 | dynamic linker and used by the debugger. */ | |
6574 | #define add_dynamic_entry(TAG, VAL) \ | |
6575 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 6576 | |
0e1862bb | 6577 | if (bfd_link_executable (info)) |
7619e7c7 | 6578 | { |
25dbc73a AM |
6579 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
6580 | return FALSE; | |
7619e7c7 AM |
6581 | } |
6582 | ||
25dbc73a | 6583 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 6584 | { |
25dbc73a AM |
6585 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6586 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6587 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6588 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6589 | return FALSE; | |
6590 | } | |
7619e7c7 | 6591 | |
c7e17e05 AM |
6592 | if (htab->plt_type == PLT_NEW |
6593 | && htab->glink != NULL | |
6594 | && htab->glink->size != 0) | |
d7128ce4 | 6595 | { |
1fe44d79 | 6596 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 6597 | return FALSE; |
5446cbdf | 6598 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
6599 | && htab->tls_get_addr != NULL |
6600 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 6601 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 6602 | return FALSE; |
d7128ce4 AM |
6603 | } |
6604 | ||
25dbc73a AM |
6605 | if (relocs) |
6606 | { | |
6607 | if (!add_dynamic_entry (DT_RELA, 0) | |
6608 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6609 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
6610 | return FALSE; | |
6611 | } | |
7619e7c7 | 6612 | |
25dbc73a AM |
6613 | /* If any dynamic relocs apply to a read-only section, then we |
6614 | need a DT_TEXTREL entry. */ | |
6615 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 6616 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 6617 | info); |
7619e7c7 | 6618 | |
25dbc73a AM |
6619 | if ((info->flags & DF_TEXTREL) != 0) |
6620 | { | |
6621 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6622 | return FALSE; | |
7619e7c7 | 6623 | } |
7a2b07ff NS |
6624 | if (htab->is_vxworks |
6625 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
6626 | return FALSE; | |
6627 | } | |
25dbc73a AM |
6628 | #undef add_dynamic_entry |
6629 | ||
7e01508c AM |
6630 | if (htab->glink_eh_frame != NULL |
6631 | && htab->glink_eh_frame->contents != NULL) | |
6632 | { | |
6633 | unsigned char *p = htab->glink_eh_frame->contents; | |
6634 | bfd_vma val; | |
6635 | ||
6636 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
6637 | /* CIE length (rewrite in case little-endian). */ | |
6638 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
6639 | p += sizeof (glink_eh_frame_cie); | |
6640 | /* FDE length. */ | |
6641 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
6642 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6643 | p += 4; | |
6644 | /* CIE pointer. */ | |
6645 | val = p - htab->glink_eh_frame->contents; | |
6646 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6647 | p += 4; | |
6648 | /* Offset to .glink. Set later. */ | |
6649 | p += 4; | |
6650 | /* .glink size. */ | |
6651 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
6652 | p += 4; | |
6653 | /* Augmentation. */ | |
6654 | p += 1; | |
6655 | ||
0e1862bb | 6656 | if (bfd_link_pic (info) |
7e01508c AM |
6657 | && htab->elf.dynamic_sections_created) |
6658 | { | |
6659 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
6660 | if (adv < 64) | |
6661 | *p++ = DW_CFA_advance_loc + adv; | |
6662 | else if (adv < 256) | |
6663 | { | |
6664 | *p++ = DW_CFA_advance_loc1; | |
6665 | *p++ = adv; | |
6666 | } | |
6667 | else if (adv < 65536) | |
6668 | { | |
6669 | *p++ = DW_CFA_advance_loc2; | |
6670 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
6671 | p += 2; | |
6672 | } | |
6673 | else | |
6674 | { | |
6675 | *p++ = DW_CFA_advance_loc4; | |
6676 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
6677 | p += 4; | |
6678 | } | |
6679 | *p++ = DW_CFA_register; | |
6680 | *p++ = 65; | |
6681 | p++; | |
6682 | *p++ = DW_CFA_advance_loc + 4; | |
6683 | *p++ = DW_CFA_restore_extended; | |
6684 | *p++ = 65; | |
6685 | } | |
6686 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6687 | == htab->glink_eh_frame->size); | |
6688 | } | |
6689 | ||
7619e7c7 AM |
6690 | return TRUE; |
6691 | } | |
0eb4a168 | 6692 | |
93d1b056 AM |
6693 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6694 | if it looks like nothing is using them. */ | |
6695 | ||
6696 | static void | |
6697 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6698 | { | |
6699 | struct elf_link_hash_entry *sda = lsect->sym; | |
6700 | ||
6701 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6702 | { | |
6703 | asection *s; | |
6704 | ||
6705 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6706 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6707 | { | |
6708 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6709 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6710 | { | |
6711 | sda->def_regular = 0; | |
6712 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6713 | sda->ref_dynamic = 1; | |
6714 | sda->forced_local = 0; | |
6715 | } | |
6716 | } | |
6717 | } | |
6718 | } | |
6719 | ||
6720 | void | |
6721 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6722 | { | |
6723 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6724 | ||
6725 | if (htab != NULL) | |
6726 | { | |
6727 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6728 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6729 | } | |
6730 | } | |
6731 | ||
6732 | ||
0eb4a168 AM |
6733 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6734 | ||
6735 | static bfd_boolean | |
6736 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6737 | { | |
6738 | if (h->plt.plist != NULL | |
6739 | && !h->def_regular | |
6740 | && (!h->pointer_equality_needed | |
6741 | || !h->ref_regular_nonweak)) | |
6742 | return FALSE; | |
6743 | ||
6744 | return _bfd_elf_hash_symbol (h); | |
6745 | } | |
25dbc73a AM |
6746 | \f |
6747 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6748 | ||
01017ef8 NS |
6749 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6750 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6751 | static const int shared_stub_entry[] = |
6752 | { | |
6753 | 0x7c0802a6, /* mflr 0 */ | |
6754 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6755 | 0x7d8802a6, /* mflr 12 */ |
6756 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6757 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6758 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6759 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6760 | 0x4e800420, /* bctr */ |
6761 | }; | |
6762 | ||
6763 | static const int stub_entry[] = | |
6764 | { | |
01017ef8 NS |
6765 | 0x3d800000, /* lis 12,xxx@ha */ |
6766 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6767 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6768 | 0x4e800420, /* bctr */ |
6769 | }; | |
6770 | ||
5446cbdf AM |
6771 | struct ppc_elf_relax_info |
6772 | { | |
6773 | unsigned int workaround_size; | |
d3e454b9 | 6774 | unsigned int picfixup_size; |
5446cbdf AM |
6775 | }; |
6776 | ||
6777 | /* This function implements long branch trampolines, and the ppc476 | |
6778 | icache bug workaround. Any section needing trampolines or patch | |
6779 | space for the workaround has its size extended so that we can | |
53291d1f | 6780 | add trampolines at the end of the section. */ |
5446cbdf | 6781 | |
25dbc73a AM |
6782 | static bfd_boolean |
6783 | ppc_elf_relax_section (bfd *abfd, | |
6784 | asection *isec, | |
6785 | struct bfd_link_info *link_info, | |
6786 | bfd_boolean *again) | |
6787 | { | |
d3e454b9 | 6788 | struct one_branch_fixup |
25dbc73a | 6789 | { |
d3e454b9 | 6790 | struct one_branch_fixup *next; |
25dbc73a | 6791 | asection *tsec; |
01017ef8 NS |
6792 | /* Final link, can use the symbol offset. For a |
6793 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6794 | bfd_vma toff; |
6795 | bfd_vma trampoff; | |
6796 | }; | |
7619e7c7 | 6797 | |
25dbc73a AM |
6798 | Elf_Internal_Shdr *symtab_hdr; |
6799 | bfd_byte *contents = NULL; | |
6800 | Elf_Internal_Sym *isymbuf = NULL; | |
6801 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6802 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6803 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6804 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6805 | unsigned changes = 0; |
5446cbdf | 6806 | bfd_boolean workaround_change; |
d7128ce4 | 6807 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6808 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6809 | asection *got2; |
50248c89 | 6810 | bfd_boolean maybe_pasted; |
7619e7c7 | 6811 | |
25dbc73a | 6812 | *again = FALSE; |
7619e7c7 | 6813 | |
5446cbdf | 6814 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6815 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6816 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6817 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6818 | || isec->size < 4) | |
25dbc73a | 6819 | return TRUE; |
7619e7c7 | 6820 | |
c8a1f254 NS |
6821 | /* We cannot represent the required PIC relocs in the output, so don't |
6822 | do anything. The linker doesn't support mixing -shared and -r | |
6823 | anyway. */ | |
0e1862bb | 6824 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6825 | return TRUE; |
5b914448 | 6826 | |
5446cbdf AM |
6827 | htab = ppc_elf_hash_table (link_info); |
6828 | if (htab == NULL) | |
6829 | return TRUE; | |
6830 | ||
6831 | isec->size = (isec->size + 3) & -4; | |
6832 | if (isec->rawsize == 0) | |
6833 | isec->rawsize = isec->size; | |
6834 | trampbase = isec->size; | |
6835 | ||
53291d1f AM |
6836 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6837 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6838 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6839 | ||
d3e454b9 AM |
6840 | if (htab->params->ppc476_workaround |
6841 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6842 | { |
6843 | if (elf_section_data (isec)->sec_info == NULL) | |
6844 | { | |
5446cbdf AM |
6845 | elf_section_data (isec)->sec_info |
6846 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6847 | if (elf_section_data (isec)->sec_info == NULL) | |
6848 | return FALSE; | |
6849 | } | |
6850 | relax_info = elf_section_data (isec)->sec_info; | |
6851 | trampbase -= relax_info->workaround_size; | |
6852 | } | |
6853 | ||
50248c89 AM |
6854 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6855 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6856 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6857 | trampoff = trampbase; |
6858 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6859 | trampoff += 4; |
7619e7c7 | 6860 | |
0ffa91dd | 6861 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6862 | picfixup_size = 0; |
6863 | if (htab->params->branch_trampolines | |
6864 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6865 | { |
5446cbdf AM |
6866 | /* Get a copy of the native relocations. */ |
6867 | if (isec->reloc_count != 0) | |
25dbc73a | 6868 | { |
5446cbdf AM |
6869 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6870 | link_info->keep_memory); | |
6871 | if (internal_relocs == NULL) | |
6872 | goto error_return; | |
25dbc73a | 6873 | } |
7619e7c7 | 6874 | |
5446cbdf AM |
6875 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6876 | ||
6877 | irelend = internal_relocs + isec->reloc_count; | |
6878 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6879 | { |
5446cbdf AM |
6880 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6881 | bfd_vma toff, roff; | |
6882 | asection *tsec; | |
d3e454b9 | 6883 | struct one_branch_fixup *f; |
5446cbdf | 6884 | size_t insn_offset = 0; |
d3e454b9 | 6885 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6886 | bfd_byte *hit_addr; |
6887 | unsigned long t0; | |
6888 | struct elf_link_hash_entry *h; | |
6889 | struct plt_entry **plist; | |
6890 | unsigned char sym_type; | |
6891 | ||
6892 | switch (r_type) | |
6893 | { | |
6894 | case R_PPC_REL24: | |
6895 | case R_PPC_LOCAL24PC: | |
6896 | case R_PPC_PLTREL24: | |
6897 | max_branch_offset = 1 << 25; | |
6898 | break; | |
6899 | ||
6900 | case R_PPC_REL14: | |
6901 | case R_PPC_REL14_BRTAKEN: | |
6902 | case R_PPC_REL14_BRNTAKEN: | |
6903 | max_branch_offset = 1 << 15; | |
6904 | break; | |
7fce784e | 6905 | |
d3e454b9 AM |
6906 | case R_PPC_ADDR16_HA: |
6907 | if (htab->params->pic_fixup > 0) | |
6908 | break; | |
6909 | continue; | |
6910 | ||
5446cbdf AM |
6911 | default: |
6912 | continue; | |
6913 | } | |
6914 | ||
6915 | /* Get the value of the symbol referred to by the reloc. */ | |
6916 | h = NULL; | |
6917 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
25dbc73a | 6918 | { |
5446cbdf AM |
6919 | /* A local symbol. */ |
6920 | Elf_Internal_Sym *isym; | |
6921 | ||
6922 | /* Read this BFD's local symbols. */ | |
25dbc73a | 6923 | if (isymbuf == NULL) |
5446cbdf AM |
6924 | { |
6925 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6926 | if (isymbuf == NULL) | |
6927 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6928 | symtab_hdr->sh_info, 0, | |
6929 | NULL, NULL, NULL); | |
6930 | if (isymbuf == 0) | |
6931 | goto error_return; | |
6932 | } | |
6933 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6934 | if (isym->st_shndx == SHN_UNDEF) | |
6935 | tsec = bfd_und_section_ptr; | |
6936 | else if (isym->st_shndx == SHN_ABS) | |
6937 | tsec = bfd_abs_section_ptr; | |
6938 | else if (isym->st_shndx == SHN_COMMON) | |
6939 | tsec = bfd_com_section_ptr; | |
6940 | else | |
6941 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6942 | ||
6943 | toff = isym->st_value; | |
6944 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6945 | } |
25dbc73a | 6946 | else |
5446cbdf AM |
6947 | { |
6948 | /* Global symbol handling. */ | |
6949 | unsigned long indx; | |
7fce784e | 6950 | |
5446cbdf AM |
6951 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6952 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6953 | |
5446cbdf AM |
6954 | while (h->root.type == bfd_link_hash_indirect |
6955 | || h->root.type == bfd_link_hash_warning) | |
6956 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6957 | |
5446cbdf AM |
6958 | if (h->root.type == bfd_link_hash_defined |
6959 | || h->root.type == bfd_link_hash_defweak) | |
6960 | { | |
6961 | tsec = h->root.u.def.section; | |
6962 | toff = h->root.u.def.value; | |
6963 | } | |
6964 | else if (h->root.type == bfd_link_hash_undefined | |
6965 | || h->root.type == bfd_link_hash_undefweak) | |
6966 | { | |
6967 | tsec = bfd_und_section_ptr; | |
0e1862bb | 6968 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6969 | } |
6970 | else | |
6971 | continue; | |
6972 | ||
9f7552cf AM |
6973 | /* If this branch is to __tls_get_addr then we may later |
6974 | optimise away the call. We won't be needing a long- | |
6975 | branch stub in that case. */ | |
0e1862bb | 6976 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6977 | && h == htab->tls_get_addr |
6978 | && irel != internal_relocs) | |
6979 | { | |
6980 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6981 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6982 | unsigned int tls_mask = 0; | |
6983 | ||
6984 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6985 | R_PPC_TLSLD, or for older object files, a reloc | |
6986 | on the __tls_get_addr arg setup insn. Get tls | |
6987 | mask bits from the symbol on that reloc. */ | |
6988 | if (t_symndx < symtab_hdr->sh_info) | |
6989 | { | |
6990 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6991 | ||
6992 | if (local_got_offsets != NULL) | |
6993 | { | |
6994 | struct plt_entry **local_plt = (struct plt_entry **) | |
6995 | (local_got_offsets + symtab_hdr->sh_info); | |
6996 | char *lgot_masks = (char *) | |
6997 | (local_plt + symtab_hdr->sh_info); | |
6998 | tls_mask = lgot_masks[t_symndx]; | |
6999 | } | |
7000 | } | |
7001 | else | |
7002 | { | |
7003 | struct elf_link_hash_entry *th | |
7004 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
7005 | ||
7006 | while (th->root.type == bfd_link_hash_indirect | |
7007 | || th->root.type == bfd_link_hash_warning) | |
7008 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
7009 | ||
7010 | tls_mask | |
7011 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
7012 | } | |
7013 | ||
7014 | /* The mask bits tell us if the call will be | |
7015 | optimised away. */ | |
7016 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
7017 | && (t_rtype == R_PPC_TLSGD | |
7018 | || t_rtype == R_PPC_GOT_TLSGD16 | |
7019 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
7020 | continue; | |
7021 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
7022 | && (t_rtype == R_PPC_TLSLD | |
7023 | || t_rtype == R_PPC_GOT_TLSLD16 | |
7024 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
7025 | continue; | |
7026 | } | |
7027 | ||
5446cbdf AM |
7028 | sym_type = h->type; |
7029 | } | |
7619e7c7 | 7030 | |
d3e454b9 AM |
7031 | if (r_type == R_PPC_ADDR16_HA) |
7032 | { | |
7033 | if (h != NULL | |
7034 | && !h->def_regular | |
7035 | && h->protected_def | |
7036 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7037 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
7038 | picfixup_size += 12; | |
7039 | continue; | |
7040 | } | |
7041 | ||
5446cbdf AM |
7042 | /* The condition here under which we call find_plt_ent must |
7043 | match that in relocate_section. If we call find_plt_ent here | |
7044 | but not in relocate_section, or vice versa, then the branch | |
7045 | destination used here may be incorrect. */ | |
7046 | plist = NULL; | |
7047 | if (h != NULL) | |
25dbc73a | 7048 | { |
5446cbdf AM |
7049 | /* We know is_branch_reloc (r_type) is true. */ |
7050 | if (h->type == STT_GNU_IFUNC | |
7051 | || r_type == R_PPC_PLTREL24) | |
7052 | plist = &h->plt.plist; | |
25dbc73a | 7053 | } |
5446cbdf AM |
7054 | else if (sym_type == STT_GNU_IFUNC |
7055 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 7056 | { |
5446cbdf AM |
7057 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
7058 | struct plt_entry **local_plt = (struct plt_entry **) | |
7059 | (local_got_offsets + symtab_hdr->sh_info); | |
7060 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 7061 | } |
5446cbdf | 7062 | if (plist != NULL) |
a9585d22 | 7063 | { |
5446cbdf AM |
7064 | bfd_vma addend = 0; |
7065 | struct plt_entry *ent; | |
7066 | ||
0e1862bb | 7067 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
7068 | addend = irel->r_addend; |
7069 | ent = find_plt_ent (plist, got2, addend); | |
7070 | if (ent != NULL) | |
a9585d22 | 7071 | { |
5446cbdf AM |
7072 | if (htab->plt_type == PLT_NEW |
7073 | || h == NULL | |
7074 | || !htab->elf.dynamic_sections_created | |
7075 | || h->dynindx == -1) | |
7076 | { | |
7077 | tsec = htab->glink; | |
7078 | toff = ent->glink_offset; | |
7079 | } | |
7080 | else | |
7081 | { | |
7082 | tsec = htab->plt; | |
7083 | toff = ent->plt.offset; | |
7084 | } | |
de972ffa AM |
7085 | } |
7086 | } | |
de972ffa | 7087 | |
5446cbdf AM |
7088 | /* If the branch and target are in the same section, you have |
7089 | no hope of adding stubs. We'll error out later should the | |
7090 | branch overflow. */ | |
7091 | if (tsec == isec) | |
7092 | continue; | |
25dbc73a | 7093 | |
5446cbdf AM |
7094 | /* There probably isn't any reason to handle symbols in |
7095 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7096 | attribute for a code section, and we are only looking at | |
7097 | branches. However, implement it correctly here as a | |
7098 | reference for other target relax_section functions. */ | |
7099 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7100 | { | |
7101 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7102 | adjusted, so all references to such symbols need to be | |
7103 | passed through _bfd_merged_section_offset. (Later, in | |
7104 | relocate_section, all SEC_MERGE symbols *except* for | |
7105 | section symbols have been adjusted.) | |
7106 | ||
7107 | gas may reduce relocations against symbols in SEC_MERGE | |
7108 | sections to a relocation against the section symbol when | |
7109 | the original addend was zero. When the reloc is against | |
7110 | a section symbol we should include the addend in the | |
7111 | offset passed to _bfd_merged_section_offset, since the | |
7112 | location of interest is the original symbol. On the | |
7113 | other hand, an access to "sym+addend" where "sym" is not | |
7114 | a section symbol should not include the addend; Such an | |
7115 | access is presumed to be an offset from "sym"; The | |
7116 | location of interest is just "sym". */ | |
7117 | if (sym_type == STT_SECTION) | |
7118 | toff += irel->r_addend; | |
7119 | ||
7120 | toff | |
7121 | = _bfd_merged_section_offset (abfd, &tsec, | |
7122 | elf_section_data (tsec)->sec_info, | |
7123 | toff); | |
7124 | ||
7125 | if (sym_type != STT_SECTION) | |
7126 | toff += irel->r_addend; | |
7127 | } | |
7128 | /* PLTREL24 addends are special. */ | |
7129 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7130 | toff += irel->r_addend; |
7619e7c7 | 7131 | |
5446cbdf | 7132 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 7133 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
7134 | && tsec == bfd_und_section_ptr) |
7135 | || tsec->output_section == NULL | |
7136 | || (tsec->owner != NULL | |
7137 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7138 | continue; | |
7619e7c7 | 7139 | |
5446cbdf | 7140 | roff = irel->r_offset; |
7de713b9 | 7141 | |
5446cbdf AM |
7142 | /* If the branch is in range, no need to do anything. */ |
7143 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 7144 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
7145 | /* A relocatable link may have sections moved during |
7146 | final link, so do not presume they remain in range. */ | |
7147 | || tsec->output_section == isec->output_section)) | |
7148 | { | |
7149 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7150 | |
5446cbdf AM |
7151 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7152 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7153 | if (symaddr - reladdr + max_branch_offset | |
7154 | < 2 * max_branch_offset) | |
7155 | continue; | |
7156 | } | |
01017ef8 | 7157 | |
5446cbdf | 7158 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 7159 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
7160 | if (f->tsec == tsec && f->toff == toff) |
7161 | break; | |
252b5132 | 7162 | |
5446cbdf AM |
7163 | if (f == NULL) |
7164 | { | |
7165 | size_t size; | |
7166 | unsigned long stub_rtype; | |
25dbc73a | 7167 | |
5446cbdf AM |
7168 | val = trampoff - roff; |
7169 | if (val >= max_branch_offset) | |
7170 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7171 | one. We'll report an error later. */ | |
7172 | continue; | |
252b5132 | 7173 | |
0e1862bb | 7174 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
7175 | { |
7176 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7177 | insn_offset = 12; | |
7178 | } | |
7179 | else | |
7180 | { | |
7181 | size = 4 * ARRAY_SIZE (stub_entry); | |
7182 | insn_offset = 0; | |
7183 | } | |
7184 | stub_rtype = R_PPC_RELAX; | |
7185 | if (tsec == htab->plt | |
7186 | || tsec == htab->glink) | |
7187 | { | |
7188 | stub_rtype = R_PPC_RELAX_PLT; | |
7189 | if (r_type == R_PPC_PLTREL24) | |
7190 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
7191 | } | |
252b5132 | 7192 | |
5446cbdf AM |
7193 | /* Hijack the old relocation. Since we need two |
7194 | relocations for this use a "composite" reloc. */ | |
7195 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7196 | stub_rtype); | |
7197 | irel->r_offset = trampoff + insn_offset; | |
7198 | if (r_type == R_PPC_PLTREL24 | |
7199 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
7200 | irel->r_addend = 0; | |
7201 | ||
7202 | /* Record the fixup so we don't do it again this section. */ | |
7203 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 7204 | f->next = branch_fixups; |
5446cbdf AM |
7205 | f->tsec = tsec; |
7206 | f->toff = toff; | |
7207 | f->trampoff = trampoff; | |
d3e454b9 | 7208 | branch_fixups = f; |
5446cbdf AM |
7209 | |
7210 | trampoff += size; | |
7211 | changes++; | |
25dbc73a AM |
7212 | } |
7213 | else | |
7214 | { | |
5446cbdf AM |
7215 | val = f->trampoff - roff; |
7216 | if (val >= max_branch_offset) | |
7217 | continue; | |
252b5132 | 7218 | |
5446cbdf AM |
7219 | /* Nop out the reloc, since we're finalizing things here. */ |
7220 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7221 | } | |
252b5132 | 7222 | |
5446cbdf AM |
7223 | /* Get the section contents. */ |
7224 | if (contents == NULL) | |
25dbc73a | 7225 | { |
5446cbdf AM |
7226 | /* Get cached copy if it exists. */ |
7227 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
7228 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 7229 | /* Go get them off disk. */ |
5446cbdf | 7230 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
7231 | goto error_return; |
7232 | } | |
252b5132 | 7233 | |
5446cbdf AM |
7234 | /* Fix up the existing branch to hit the trampoline. */ |
7235 | hit_addr = contents + roff; | |
7236 | switch (r_type) | |
7237 | { | |
7238 | case R_PPC_REL24: | |
7239 | case R_PPC_LOCAL24PC: | |
7240 | case R_PPC_PLTREL24: | |
7241 | t0 = bfd_get_32 (abfd, hit_addr); | |
7242 | t0 &= ~0x3fffffc; | |
7243 | t0 |= val & 0x3fffffc; | |
7244 | bfd_put_32 (abfd, t0, hit_addr); | |
7245 | break; | |
252b5132 | 7246 | |
5446cbdf AM |
7247 | case R_PPC_REL14: |
7248 | case R_PPC_REL14_BRTAKEN: | |
7249 | case R_PPC_REL14_BRNTAKEN: | |
7250 | t0 = bfd_get_32 (abfd, hit_addr); | |
7251 | t0 &= ~0xfffc; | |
7252 | t0 |= val & 0xfffc; | |
7253 | bfd_put_32 (abfd, t0, hit_addr); | |
7254 | break; | |
7255 | } | |
25dbc73a | 7256 | } |
252b5132 | 7257 | |
d3e454b9 | 7258 | while (branch_fixups != NULL) |
25dbc73a | 7259 | { |
d3e454b9 AM |
7260 | struct one_branch_fixup *f = branch_fixups; |
7261 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
7262 | free (f); |
7263 | } | |
5446cbdf | 7264 | } |
252b5132 | 7265 | |
5446cbdf AM |
7266 | workaround_change = FALSE; |
7267 | newsize = trampoff; | |
795bc6b3 | 7268 | if (htab->params->ppc476_workaround |
0e1862bb | 7269 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 7270 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
7271 | { |
7272 | bfd_vma addr, end_addr; | |
7273 | unsigned int crossings; | |
795bc6b3 | 7274 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
7275 | |
7276 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 7277 | end_addr = addr + trampoff; |
5446cbdf | 7278 | addr &= -pagesize; |
795bc6b3 | 7279 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
7280 | if (crossings != 0) |
7281 | { | |
7282 | /* Keep space aligned, to ensure the patch code itself does | |
7283 | not cross a page. Don't decrease size calculated on a | |
7284 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 7285 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
7286 | newsize += crossings * 16; |
7287 | if (relax_info->workaround_size < newsize) | |
7288 | { | |
7289 | relax_info->workaround_size = newsize; | |
7290 | workaround_change = TRUE; | |
5446cbdf AM |
7291 | } |
7292 | /* Ensure relocate_section is called. */ | |
7293 | isec->flags |= SEC_RELOC; | |
7294 | } | |
7295 | newsize = trampoff + relax_info->workaround_size; | |
7296 | } | |
7297 | ||
d3e454b9 AM |
7298 | if (htab->params->pic_fixup > 0) |
7299 | { | |
7300 | picfixup_size -= relax_info->picfixup_size; | |
7301 | if (picfixup_size != 0) | |
7302 | relax_info->picfixup_size += picfixup_size; | |
7303 | newsize += relax_info->picfixup_size; | |
7304 | } | |
7305 | ||
7306 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
7307 | isec->size = newsize; |
7308 | ||
25dbc73a AM |
7309 | if (isymbuf != NULL |
7310 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 7311 | { |
25dbc73a AM |
7312 | if (! link_info->keep_memory) |
7313 | free (isymbuf); | |
252b5132 | 7314 | else |
25dbc73a AM |
7315 | { |
7316 | /* Cache the symbols for elf_link_input_bfd. */ | |
7317 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
7318 | } | |
252b5132 RH |
7319 | } |
7320 | ||
25dbc73a AM |
7321 | if (contents != NULL |
7322 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7323 | { | |
53291d1f | 7324 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
7325 | free (contents); |
7326 | else | |
7327 | { | |
7328 | /* Cache the section contents for elf_link_input_bfd. */ | |
7329 | elf_section_data (isec)->this_hdr.contents = contents; | |
7330 | } | |
7331 | } | |
252b5132 | 7332 | |
d3e454b9 | 7333 | changes += picfixup_size; |
9bc4e62b | 7334 | if (changes != 0) |
25dbc73a | 7335 | { |
9bc4e62b NS |
7336 | /* Append sufficient NOP relocs so we can write out relocation |
7337 | information for the trampolines. */ | |
d4730f92 | 7338 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
7339 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
7340 | * sizeof (*new_relocs)); | |
7341 | unsigned ix; | |
5b914448 | 7342 | |
9bc4e62b NS |
7343 | if (!new_relocs) |
7344 | goto error_return; | |
7345 | memcpy (new_relocs, internal_relocs, | |
7346 | isec->reloc_count * sizeof (*new_relocs)); | |
7347 | for (ix = changes; ix--;) | |
7348 | { | |
7349 | irel = new_relocs + ix + isec->reloc_count; | |
7350 | ||
7351 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7352 | } | |
7353 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 7354 | free (internal_relocs); |
9bc4e62b NS |
7355 | elf_section_data (isec)->relocs = new_relocs; |
7356 | isec->reloc_count += changes; | |
d4730f92 BS |
7357 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
7358 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 7359 | } |
5446cbdf AM |
7360 | else if (internal_relocs != NULL |
7361 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 7362 | free (internal_relocs); |
252b5132 | 7363 | |
5446cbdf | 7364 | *again = changes != 0 || workaround_change; |
b34976b6 | 7365 | return TRUE; |
25dbc73a AM |
7366 | |
7367 | error_return: | |
d3e454b9 | 7368 | while (branch_fixups != NULL) |
5446cbdf | 7369 | { |
d3e454b9 AM |
7370 | struct one_branch_fixup *f = branch_fixups; |
7371 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
7372 | free (f); |
7373 | } | |
25dbc73a AM |
7374 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
7375 | free (isymbuf); | |
7376 | if (contents != NULL | |
7377 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7378 | free (contents); | |
7379 | if (internal_relocs != NULL | |
7380 | && elf_section_data (isec)->relocs != internal_relocs) | |
7381 | free (internal_relocs); | |
7382 | return FALSE; | |
252b5132 | 7383 | } |
252b5132 | 7384 | \f |
8a696751 AM |
7385 | /* What to do when ld finds relocations against symbols defined in |
7386 | discarded sections. */ | |
7387 | ||
7388 | static unsigned int | |
7389 | ppc_elf_action_discarded (asection *sec) | |
7390 | { | |
7391 | if (strcmp (".fixup", sec->name) == 0) | |
7392 | return 0; | |
7393 | ||
7394 | if (strcmp (".got2", sec->name) == 0) | |
7395 | return 0; | |
7396 | ||
7397 | return _bfd_elf_default_action_discarded (sec); | |
7398 | } | |
c9a2f333 | 7399 | \f |
25dbc73a | 7400 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 7401 | |
25dbc73a | 7402 | static bfd_vma |
76750a2f | 7403 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
7404 | elf_linker_section_t *lsect, |
7405 | struct elf_link_hash_entry *h, | |
7406 | bfd_vma relocation, | |
2bb04cf2 | 7407 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
7408 | { |
7409 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 7410 | |
25dbc73a | 7411 | BFD_ASSERT (lsect != NULL); |
252b5132 | 7412 | |
25dbc73a | 7413 | if (h != NULL) |
252b5132 | 7414 | { |
25dbc73a AM |
7415 | /* Handle global symbol. */ |
7416 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 7417 | |
25dbc73a | 7418 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
7419 | BFD_ASSERT (eh->elf.def_regular); |
7420 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
7421 | } |
7422 | else | |
7423 | { | |
7424 | /* Handle local symbol. */ | |
7425 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 7426 | |
0c8d6e5c | 7427 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 7428 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
7429 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
7430 | } | |
252b5132 | 7431 | |
76750a2f AM |
7432 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
7433 | rel->r_addend, | |
7434 | lsect); | |
7435 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 7436 | |
76750a2f AM |
7437 | /* Offset will always be a multiple of four, so use the bottom bit |
7438 | as a "written" flag. */ | |
7439 | if ((linker_section_ptr->offset & 1) == 0) | |
7440 | { | |
7441 | bfd_put_32 (lsect->section->owner, | |
7442 | relocation + linker_section_ptr->addend, | |
7443 | lsect->section->contents + linker_section_ptr->offset); | |
7444 | linker_section_ptr->offset += 1; | |
252b5132 RH |
7445 | } |
7446 | ||
bd6c6e2b AM |
7447 | relocation = (lsect->section->output_section->vma |
7448 | + lsect->section->output_offset | |
76750a2f | 7449 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 7450 | - SYM_VAL (lsect->sym)); |
252b5132 | 7451 | |
25dbc73a AM |
7452 | #ifdef DEBUG |
7453 | fprintf (stderr, | |
7454 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
7455 | lsect->name, (long) relocation, (long) relocation); | |
7456 | #endif | |
252b5132 | 7457 | |
bd6c6e2b | 7458 | return relocation; |
252b5132 | 7459 | } |
25dbc73a | 7460 | |
e054468f AM |
7461 | #define PPC_LO(v) ((v) & 0xffff) |
7462 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7463 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7464 | ||
7465 | static void | |
a7f2871e | 7466 | write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p, |
e054468f AM |
7467 | struct bfd_link_info *info) |
7468 | { | |
7469 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7470 | bfd *output_bfd = info->output_bfd; | |
7471 | bfd_vma plt; | |
e054468f AM |
7472 | |
7473 | plt = ((ent->plt.offset & ~1) | |
7474 | + plt_sec->output_section->vma | |
7475 | + plt_sec->output_offset); | |
e054468f | 7476 | |
0e1862bb | 7477 | if (bfd_link_pic (info)) |
e054468f AM |
7478 | { |
7479 | bfd_vma got = 0; | |
7480 | ||
7481 | if (ent->addend >= 32768) | |
7482 | got = (ent->addend | |
7483 | + ent->sec->output_section->vma | |
7484 | + ent->sec->output_offset); | |
7485 | else if (htab->elf.hgot != NULL) | |
7486 | got = SYM_VAL (htab->elf.hgot); | |
7487 | ||
7488 | plt -= got; | |
7489 | ||
7490 | if (plt + 0x8000 < 0x10000) | |
7491 | { | |
7492 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
7493 | p += 4; | |
7494 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7495 | p += 4; | |
7496 | bfd_put_32 (output_bfd, BCTR, p); | |
7497 | p += 4; | |
da3a2088 | 7498 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); |
e054468f AM |
7499 | p += 4; |
7500 | } | |
7501 | else | |
7502 | { | |
7503 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7504 | p += 4; | |
7505 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7506 | p += 4; | |
7507 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7508 | p += 4; | |
7509 | bfd_put_32 (output_bfd, BCTR, p); | |
7510 | p += 4; | |
7511 | } | |
7512 | } | |
7513 | else | |
7514 | { | |
7515 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7516 | p += 4; | |
7517 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7518 | p += 4; | |
7519 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7520 | p += 4; | |
7521 | bfd_put_32 (output_bfd, BCTR, p); | |
7522 | p += 4; | |
7523 | } | |
7524 | } | |
7525 | ||
bd6c6e2b AM |
7526 | /* Return true if symbol is defined statically. */ |
7527 | ||
7528 | static bfd_boolean | |
7529 | is_static_defined (struct elf_link_hash_entry *h) | |
7530 | { | |
7531 | return ((h->root.type == bfd_link_hash_defined | |
7532 | || h->root.type == bfd_link_hash_defweak) | |
7533 | && h->root.u.def.section != NULL | |
7534 | && h->root.u.def.section->output_section != NULL); | |
7535 | } | |
7536 | ||
2d0f3896 AM |
7537 | /* If INSN is an opcode that may be used with an @tls operand, return |
7538 | the transformed insn for TLS optimisation, otherwise return 0. If | |
7539 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
7540 | ||
7541 | unsigned int | |
7542 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
7543 | { | |
7544 | unsigned int rtra; | |
7545 | ||
7546 | if ((insn & (0x3f << 26)) != 31 << 26) | |
7547 | return 0; | |
7548 | ||
7549 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
7550 | rtra = insn & ((1 << 26) - (1 << 16)); | |
7551 | else if (((insn >> 16) & 0x1f) == reg) | |
7552 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
7553 | else | |
7554 | return 0; | |
7555 | ||
7556 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
7557 | /* add -> addi. */ | |
7558 | insn = 14 << 26; | |
7559 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
7560 | && ((insn & (0x1f << 6)) < 14 << 6 | |
7561 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
7562 | && (insn & (0x1f << 6)) < 24 << 6))) | |
7563 | /* load and store indexed -> dform. */ | |
7564 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
7565 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
7566 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7567 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
7568 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
7569 | /* lwax -> lwa. */ | |
7570 | insn = (58 << 26) | 2; | |
7571 | else | |
7572 | return 0; | |
7573 | insn |= rtra; | |
7574 | return insn; | |
7575 | } | |
7576 | ||
766bc656 AM |
7577 | /* If INSN is an opcode that may be used with an @tprel operand, return |
7578 | the transformed insn for an undefined weak symbol, ie. with the | |
7579 | thread pointer REG operand removed. Otherwise return 0. */ | |
7580 | ||
7581 | unsigned int | |
7582 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
7583 | { | |
7584 | if ((insn & (0x1f << 16)) == reg << 16 | |
7585 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7586 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
7587 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7588 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7589 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7590 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7591 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7592 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7593 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7594 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7595 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7596 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7597 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7598 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7599 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7600 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7601 | && (insn & 3) != 1) | |
7602 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7603 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
7604 | { | |
7605 | insn &= ~(0x1f << 16); | |
7606 | } | |
7607 | else if ((insn & (0x1f << 21)) == reg << 21 | |
7608 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
7609 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
7610 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
7611 | { | |
7612 | insn &= ~(0x1f << 21); | |
7613 | insn |= (insn & (0x1f << 16)) << 5; | |
7614 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
7615 | insn -= 2 >> 26; /* convert to ori,oris */ | |
7616 | } | |
7617 | else | |
7618 | insn = 0; | |
7619 | return insn; | |
7620 | } | |
7621 | ||
1fe532cf AM |
7622 | static bfd_boolean |
7623 | is_insn_ds_form (unsigned int insn) | |
7624 | { | |
7625 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
7626 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
7627 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
7628 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
7629 | } | |
7630 | ||
7631 | static bfd_boolean | |
7632 | is_insn_dq_form (unsigned int insn) | |
7633 | { | |
a680de9a PB |
7634 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
7635 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
7636 | && (insn & 3) == 1)); | |
1fe532cf AM |
7637 | } |
7638 | ||
252b5132 RH |
7639 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7640 | to handle the relocations for a section. | |
7641 | ||
7642 | The relocs are always passed as Rela structures; if the section | |
7643 | actually uses Rel structures, the r_addend field will always be | |
7644 | zero. | |
7645 | ||
7646 | This function is responsible for adjust the section contents as | |
7647 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7648 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
7649 | necessary. |
7650 | ||
7651 | This function does not have to worry about setting the reloc | |
7652 | address or the reloc symbol index. | |
7653 | ||
7654 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7655 | ||
7656 | LOCAL_SECTIONS is an array giving the section in the input file | |
7657 | corresponding to the st_shndx field of each local symbol. | |
7658 | ||
7659 | The global hash table entry for the global symbols can be found | |
7660 | via elf_sym_hashes (input_bfd). | |
7661 | ||
1049f94e | 7662 | When generating relocatable output, this function must handle |
252b5132 RH |
7663 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7664 | going to be the section symbol corresponding to the output | |
7665 | section, which means that the addend must be adjusted | |
7666 | accordingly. */ | |
7667 | ||
b34976b6 | 7668 | static bfd_boolean |
55fd94b0 AM |
7669 | ppc_elf_relocate_section (bfd *output_bfd, |
7670 | struct bfd_link_info *info, | |
7671 | bfd *input_bfd, | |
7672 | asection *input_section, | |
7673 | bfd_byte *contents, | |
7674 | Elf_Internal_Rela *relocs, | |
7675 | Elf_Internal_Sym *local_syms, | |
7676 | asection **local_sections) | |
252b5132 | 7677 | { |
7619e7c7 AM |
7678 | Elf_Internal_Shdr *symtab_hdr; |
7679 | struct elf_link_hash_entry **sym_hashes; | |
7680 | struct ppc_elf_link_hash_table *htab; | |
7681 | Elf_Internal_Rela *rel; | |
c316a17c | 7682 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
7683 | Elf_Internal_Rela *relend; |
7684 | Elf_Internal_Rela outrel; | |
f95f8542 | 7685 | asection *got2; |
252b5132 | 7686 | bfd_vma *local_got_offsets; |
b34976b6 | 7687 | bfd_boolean ret = TRUE; |
4fe5ca5b | 7688 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
3348747a | 7689 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
7690 | unsigned int picfixup_size = 0; |
7691 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7692 | |
252b5132 | 7693 | #ifdef DEBUG |
d003868e AM |
7694 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
7695 | "%ld relocations%s", | |
7696 | input_bfd, input_section, | |
7697 | (long) input_section->reloc_count, | |
0e1862bb | 7698 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7699 | #endif |
7700 | ||
a6aa5195 AM |
7701 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7702 | ||
e47cd125 | 7703 | /* Initialize howto table if not already done. */ |
8da6118f | 7704 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7705 | ppc_elf_howto_init (); |
7706 | ||
7619e7c7 | 7707 | htab = ppc_elf_hash_table (info); |
252b5132 | 7708 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7709 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7710 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7711 | /* We have to handle relocations in vxworks .tls_vars sections |
7712 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7713 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7714 | && !strcmp (input_section->output_section->name, |
7715 | ".tls_vars")); | |
d3e454b9 AM |
7716 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7717 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7718 | rel = wrel = relocs; |
7619e7c7 | 7719 | relend = relocs + input_section->reloc_count; |
c316a17c | 7720 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7721 | { |
7619e7c7 AM |
7722 | enum elf_ppc_reloc_type r_type; |
7723 | bfd_vma addend; | |
7724 | bfd_reloc_status_type r; | |
7725 | Elf_Internal_Sym *sym; | |
7726 | asection *sec; | |
7727 | struct elf_link_hash_entry *h; | |
7728 | const char *sym_name; | |
252b5132 RH |
7729 | reloc_howto_type *howto; |
7730 | unsigned long r_symndx; | |
7731 | bfd_vma relocation; | |
91d6fa6a | 7732 | bfd_vma branch_bit, from; |
7619e7c7 AM |
7733 | bfd_boolean unresolved_reloc; |
7734 | bfd_boolean warned; | |
7735 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 7736 | struct plt_entry **ifunc; |
86c95733 | 7737 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7738 | |
c316a17c | 7739 | again: |
55fd94b0 AM |
7740 | r_type = ELF32_R_TYPE (rel->r_info); |
7741 | sym = NULL; | |
7742 | sec = NULL; | |
7743 | h = NULL; | |
7619e7c7 AM |
7744 | unresolved_reloc = FALSE; |
7745 | warned = FALSE; | |
252b5132 | 7746 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7747 | |
252b5132 RH |
7748 | if (r_symndx < symtab_hdr->sh_info) |
7749 | { | |
7750 | sym = local_syms + r_symndx; | |
7751 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7752 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7753 | |
8517fae7 | 7754 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7755 | } |
7756 | else | |
7757 | { | |
62d887d4 L |
7758 | bfd_boolean ignored; |
7759 | ||
b2a8e766 AM |
7760 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7761 | r_symndx, symtab_hdr, sym_hashes, | |
7762 | h, sec, relocation, | |
62d887d4 | 7763 | unresolved_reloc, warned, ignored); |
9abc968f | 7764 | |
252b5132 | 7765 | sym_name = h->root.root.string; |
7619e7c7 AM |
7766 | } |
7767 | ||
dbaa2011 | 7768 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7769 | { |
7770 | /* For relocs against symbols from removed linkonce sections, | |
7771 | or sections discarded by a linker script, we just want the | |
7772 | section contents zeroed. Avoid any special processing. */ | |
7773 | howto = NULL; | |
7774 | if (r_type < R_PPC_max) | |
7775 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7776 | |
7777 | _bfd_clear_contents (howto, input_bfd, input_section, | |
7778 | contents + rel->r_offset); | |
7779 | wrel->r_offset = rel->r_offset; | |
7780 | wrel->r_info = 0; | |
7781 | wrel->r_addend = 0; | |
7782 | ||
7783 | /* For ld -r, remove relocations in debug sections against | |
7784 | sections defined in discarded sections. Not done for | |
7785 | non-debug to preserve relocs in .eh_frame which the | |
7786 | eh_frame editing code expects to be present. */ | |
7787 | if (bfd_link_relocatable (info) | |
7788 | && (input_section->flags & SEC_DEBUGGING)) | |
7789 | wrel--; | |
7790 | ||
7791 | continue; | |
ab96bf03 AM |
7792 | } |
7793 | ||
0e1862bb | 7794 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7795 | { |
7796 | if (got2 != NULL | |
7797 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7798 | && rel->r_addend != 0) |
ab96bf03 AM |
7799 | { |
7800 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7801 | addend specifies the GOT pointer offset within .got2. */ | |
7802 | rel->r_addend += got2->output_offset; | |
7803 | } | |
53291d1f AM |
7804 | if (r_type != R_PPC_RELAX_PLT |
7805 | && r_type != R_PPC_RELAX_PLTREL24 | |
7806 | && r_type != R_PPC_RELAX) | |
c316a17c | 7807 | goto copy_reloc; |
ab96bf03 AM |
7808 | } |
7809 | ||
7619e7c7 AM |
7810 | /* TLS optimizations. Replace instruction sequences and relocs |
7811 | based on information we collected in tls_optimize. We edit | |
7812 | RELOCS so that --emit-relocs will output something sensible | |
7813 | for the final instruction stream. */ | |
7814 | tls_mask = 0; | |
7815 | tls_gd = 0; | |
727fc41e AM |
7816 | if (h != NULL) |
7817 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7818 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7819 | { |
e054468f | 7820 | struct plt_entry **local_plt; |
727fc41e | 7821 | char *lgot_masks; |
e054468f AM |
7822 | local_plt |
7823 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7824 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7825 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7826 | } |
7827 | ||
7828 | /* Ensure reloc mapping code below stays sane. */ | |
7829 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7830 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7831 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7832 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7833 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7834 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7835 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7836 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7837 | abort (); | |
7838 | switch (r_type) | |
7839 | { | |
7840 | default: | |
7841 | break; | |
7842 | ||
7843 | case R_PPC_GOT_TPREL16: | |
7844 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7845 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7846 | && (tls_mask & TLS_TPREL) == 0) |
7847 | { | |
7848 | bfd_vma insn; | |
91d6fa6a | 7849 | |
c316a17c AM |
7850 | insn = bfd_get_32 (output_bfd, |
7851 | contents + rel->r_offset - d_offset); | |
7619e7c7 AM |
7852 | insn &= 31 << 21; |
7853 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
c316a17c AM |
7854 | bfd_put_32 (output_bfd, insn, |
7855 | contents + rel->r_offset - d_offset); | |
7619e7c7 AM |
7856 | r_type = R_PPC_TPREL16_HA; |
7857 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7858 | } | |
7859 | break; | |
7860 | ||
7861 | case R_PPC_TLS: | |
e054468f | 7862 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7863 | && (tls_mask & TLS_TPREL) == 0) |
7864 | { | |
2d0f3896 AM |
7865 | bfd_vma insn; |
7866 | ||
7619e7c7 | 7867 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7868 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7869 | if (insn == 0) | |
7619e7c7 | 7870 | abort (); |
7619e7c7 AM |
7871 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
7872 | r_type = R_PPC_TPREL16_LO; | |
7873 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7874 | |
7619e7c7 | 7875 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7876 | PPC_TPREL16_LO which is at low-order half-word. */ |
7877 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7878 | } |
7879 | break; | |
7880 | ||
7881 | case R_PPC_GOT_TLSGD16_HI: | |
7882 | case R_PPC_GOT_TLSGD16_HA: | |
7883 | tls_gd = TLS_TPRELGD; | |
e054468f | 7884 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7885 | goto tls_gdld_hi; |
7886 | break; | |
7887 | ||
7888 | case R_PPC_GOT_TLSLD16_HI: | |
7889 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7890 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7891 | { |
7892 | tls_gdld_hi: | |
7893 | if ((tls_mask & tls_gd) != 0) | |
7894 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7895 | + R_PPC_GOT_TPREL16); | |
7896 | else | |
7897 | { | |
4fe5ca5b | 7898 | rel->r_offset -= d_offset; |
b86ac8e3 | 7899 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7900 | r_type = R_PPC_NONE; |
7901 | } | |
7902 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7903 | } | |
7904 | break; | |
7905 | ||
7906 | case R_PPC_GOT_TLSGD16: | |
7907 | case R_PPC_GOT_TLSGD16_LO: | |
7908 | tls_gd = TLS_TPRELGD; | |
e054468f | 7909 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7910 | goto tls_ldgd_opt; |
7619e7c7 AM |
7911 | break; |
7912 | ||
7913 | case R_PPC_GOT_TLSLD16: | |
7914 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7915 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7916 | { |
3a71aa26 | 7917 | unsigned int insn1, insn2; |
b7fcf6f6 | 7918 | bfd_vma offset; |
7619e7c7 | 7919 | |
b7fcf6f6 | 7920 | tls_ldgd_opt: |
727fc41e AM |
7921 | offset = (bfd_vma) -1; |
7922 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7923 | __tls_get_addr calls, we must trust that the call | |
7924 | stays with its arg setup insns, ie. that the next | |
7925 | reloc is the __tls_get_addr call associated with | |
7926 | the current reloc. Edit both insns. */ | |
7927 | if (input_section->has_tls_get_addr_call | |
7928 | && rel + 1 < relend | |
7929 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7930 | htab->tls_get_addr)) | |
7931 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7932 | /* We read the low GOT_TLS insn because we need to keep |
7933 | the destination reg. It may be something other than | |
7934 | the usual r3, and moved to r3 before the call by | |
7935 | intervening code. */ | |
7936 | insn1 = bfd_get_32 (output_bfd, | |
7937 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
7938 | if ((tls_mask & tls_gd) != 0) |
7939 | { | |
7940 | /* IE */ | |
b86ac8e3 | 7941 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7942 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7943 | if (offset != (bfd_vma) -1) |
7944 | { | |
f58d5a2d | 7945 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7946 | insn2 = 0x7c631214; /* add 3,3,2 */ |
7947 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7948 | } | |
b7fcf6f6 AM |
7949 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7950 | + R_PPC_GOT_TPREL16); | |
7951 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7952 | } | |
7953 | else | |
7954 | { | |
7955 | /* LE */ | |
b86ac8e3 AM |
7956 | insn1 &= 0x1f << 21; |
7957 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7958 | if (tls_gd == 0) |
7959 | { | |
b7fcf6f6 | 7960 | /* Was an LD reloc. */ |
1d483afe AM |
7961 | for (r_symndx = 0; |
7962 | r_symndx < symtab_hdr->sh_info; | |
7963 | r_symndx++) | |
7964 | if (local_sections[r_symndx] == sec) | |
7965 | break; | |
7966 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7967 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7968 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7969 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7970 | rel->r_addend -= (local_syms[r_symndx].st_value |
7971 | + sec->output_offset | |
7972 | + sec->output_section->vma); | |
7619e7c7 | 7973 | } |
b7fcf6f6 AM |
7974 | r_type = R_PPC_TPREL16_HA; |
7975 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7976 | if (offset != (bfd_vma) -1) |
7977 | { | |
7978 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7979 | rel[1].r_offset = offset + d_offset; | |
7980 | rel[1].r_addend = rel->r_addend; | |
7981 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7982 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7983 | } | |
b7fcf6f6 AM |
7984 | } |
7985 | bfd_put_32 (output_bfd, insn1, | |
7986 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
7987 | if (tls_gd == 0) |
7988 | { | |
7989 | /* We changed the symbol on an LD reloc. Start over | |
7990 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 7991 | goto again; |
7619e7c7 | 7992 | } |
252b5132 | 7993 | } |
7619e7c7 | 7994 | break; |
727fc41e AM |
7995 | |
7996 | case R_PPC_TLSGD: | |
e054468f | 7997 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
7998 | { |
7999 | unsigned int insn2; | |
8000 | bfd_vma offset = rel->r_offset; | |
8001 | ||
8002 | if ((tls_mask & TLS_TPRELGD) != 0) | |
8003 | { | |
8004 | /* IE */ | |
8005 | r_type = R_PPC_NONE; | |
8006 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
8007 | } | |
8008 | else | |
8009 | { | |
8010 | /* LE */ | |
8011 | r_type = R_PPC_TPREL16_LO; | |
8012 | rel->r_offset += d_offset; | |
8013 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8014 | } | |
8015 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
8016 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
8017 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8018 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 8019 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
8020 | } |
8021 | break; | |
8022 | ||
8023 | case R_PPC_TLSLD: | |
e054468f | 8024 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
8025 | { |
8026 | unsigned int insn2; | |
8027 | ||
8028 | for (r_symndx = 0; | |
8029 | r_symndx < symtab_hdr->sh_info; | |
8030 | r_symndx++) | |
8031 | if (local_sections[r_symndx] == sec) | |
8032 | break; | |
8033 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8034 | r_symndx = STN_UNDEF; |
727fc41e | 8035 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8036 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
8037 | rel->r_addend -= (local_syms[r_symndx].st_value |
8038 | + sec->output_offset | |
8039 | + sec->output_section->vma); | |
8040 | ||
8041 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8042 | rel->r_offset += d_offset; | |
8043 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8044 | bfd_put_32 (output_bfd, insn2, | |
8045 | contents + rel->r_offset - d_offset); | |
8046 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8047 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 8048 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 8049 | goto again; |
727fc41e AM |
8050 | } |
8051 | break; | |
7619e7c7 AM |
8052 | } |
8053 | ||
8054 | /* Handle other relocations that tweak non-addend part of insn. */ | |
8055 | branch_bit = 0; | |
8056 | switch (r_type) | |
8057 | { | |
8058 | default: | |
8059 | break; | |
8060 | ||
8061 | /* Branch taken prediction relocations. */ | |
8062 | case R_PPC_ADDR14_BRTAKEN: | |
8063 | case R_PPC_REL14_BRTAKEN: | |
8064 | branch_bit = BRANCH_PREDICT_BIT; | |
8065 | /* Fall thru */ | |
8066 | ||
4cc11e76 | 8067 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
8068 | case R_PPC_ADDR14_BRNTAKEN: |
8069 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a NC |
8070 | { |
8071 | bfd_vma insn; | |
7619e7c7 | 8072 | |
91d6fa6a NC |
8073 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
8074 | insn &= ~BRANCH_PREDICT_BIT; | |
8075 | insn |= branch_bit; | |
7619e7c7 | 8076 | |
91d6fa6a NC |
8077 | from = (rel->r_offset |
8078 | + input_section->output_offset | |
8079 | + input_section->output_section->vma); | |
7619e7c7 | 8080 | |
91d6fa6a NC |
8081 | /* Invert 'y' bit if not the default. */ |
8082 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8083 | insn ^= BRANCH_PREDICT_BIT; | |
8084 | ||
8085 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
8086 | break; | |
8087 | } | |
252b5132 RH |
8088 | } |
8089 | ||
d3e454b9 AM |
8090 | if (ELIMINATE_COPY_RELOCS |
8091 | && h != NULL | |
8092 | && !h->def_regular | |
8093 | && h->protected_def | |
8094 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8095 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8096 | && htab->params->pic_fixup > 0) | |
8097 | { | |
8098 | /* Convert lis;addi or lis;load/store accessing a protected | |
8099 | variable defined in a shared library to PIC. */ | |
8100 | unsigned int insn; | |
8101 | ||
8102 | if (r_type == R_PPC_ADDR16_HA) | |
8103 | { | |
8104 | insn = bfd_get_32 (output_bfd, | |
8105 | contents + rel->r_offset - d_offset); | |
8106 | if ((insn & (0x3f << 26)) == (15u << 26) | |
8107 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
8108 | { | |
8109 | bfd_byte *p; | |
8110 | bfd_vma off; | |
8111 | bfd_vma got_addr; | |
8112 | ||
8113 | p = (contents + input_section->size | |
8114 | - relax_info->workaround_size | |
8115 | - relax_info->picfixup_size | |
8116 | + picfixup_size); | |
8117 | off = (p - contents) - (rel->r_offset - d_offset); | |
8118 | if (off > 0x1fffffc || (off & 3) != 0) | |
8119 | info->callbacks->einfo | |
8120 | (_("%P: %H: fixup branch overflow\n"), | |
8121 | input_bfd, input_section, rel->r_offset); | |
8122 | ||
8123 | bfd_put_32 (output_bfd, B | off, | |
8124 | contents + rel->r_offset - d_offset); | |
8125 | got_addr = (htab->got->output_section->vma | |
8126 | + htab->got->output_offset | |
8127 | + (h->got.offset & ~1)); | |
c316a17c AM |
8128 | wrel->r_offset = (p - contents) + d_offset; |
8129 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
8130 | wrel->r_addend = got_addr; | |
d3e454b9 AM |
8131 | insn &= ~0xffff; |
8132 | insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff; | |
8133 | bfd_put_32 (output_bfd, insn, p); | |
8134 | ||
8135 | /* Convert lis to lwz, loading address from GOT. */ | |
8136 | insn &= ~0xffff; | |
8137 | insn ^= (32u ^ 15u) << 26; | |
8138 | insn |= (insn & (0x1f << 21)) >> 5; | |
8139 | insn |= got_addr & 0xffff; | |
8140 | bfd_put_32 (output_bfd, insn, p + 4); | |
8141 | ||
8142 | bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); | |
8143 | picfixup_size += 12; | |
8144 | ||
8145 | /* Use one of the spare relocs, so --emit-relocs | |
8146 | output is reasonable. */ | |
8147 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
8148 | wrel++, rel++; |
8149 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 8150 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 8151 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
8152 | |
8153 | /* Continue on as if we had a got reloc, to output | |
8154 | dynamic reloc. */ | |
8155 | r_type = R_PPC_GOT16_LO; | |
8156 | } | |
8157 | else | |
8158 | info->callbacks->einfo | |
8159 | (_("%P: %H: error: %s with unexpected instruction %x\n"), | |
8160 | input_bfd, input_section, rel->r_offset, | |
8161 | "R_PPC_ADDR16_HA", insn); | |
8162 | } | |
8163 | else if (r_type == R_PPC_ADDR16_LO) | |
8164 | { | |
8165 | insn = bfd_get_32 (output_bfd, | |
8166 | contents + rel->r_offset - d_offset); | |
8167 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8168 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8169 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8170 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8171 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8172 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8173 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8174 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8175 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8176 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8177 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8178 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8179 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8180 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8181 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8182 | && (insn & 3) != 1) | |
8183 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8184 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
8185 | { | |
8186 | /* Arrange to apply the reloc addend, if any. */ | |
8187 | relocation = 0; | |
8188 | unresolved_reloc = FALSE; | |
8189 | rel->r_info = ELF32_R_INFO (0, r_type); | |
8190 | } | |
8191 | else | |
8192 | info->callbacks->einfo | |
8193 | (_("%P: %H: error: %s with unexpected instruction %x\n"), | |
8194 | input_bfd, input_section, rel->r_offset, | |
8195 | "R_PPC_ADDR16_LO", insn); | |
8196 | } | |
8197 | } | |
8198 | ||
e054468f | 8199 | ifunc = NULL; |
25f23106 | 8200 | if (!htab->is_vxworks) |
e054468f | 8201 | { |
de972ffa AM |
8202 | struct plt_entry *ent; |
8203 | ||
e054468f AM |
8204 | if (h != NULL) |
8205 | { | |
8206 | if (h->type == STT_GNU_IFUNC) | |
8207 | ifunc = &h->plt.plist; | |
8208 | } | |
de972ffa AM |
8209 | else if (local_got_offsets != NULL |
8210 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 8211 | { |
de972ffa | 8212 | struct plt_entry **local_plt; |
e054468f | 8213 | |
de972ffa AM |
8214 | local_plt = (struct plt_entry **) (local_got_offsets |
8215 | + symtab_hdr->sh_info); | |
8216 | ifunc = local_plt + r_symndx; | |
e054468f | 8217 | } |
e054468f | 8218 | |
de972ffa AM |
8219 | ent = NULL; |
8220 | if (ifunc != NULL | |
0e1862bb | 8221 | && (!bfd_link_pic (info) |
de972ffa AM |
8222 | || is_branch_reloc (r_type))) |
8223 | { | |
8224 | addend = 0; | |
0e1862bb | 8225 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
de972ffa AM |
8226 | addend = rel->r_addend; |
8227 | ent = find_plt_ent (ifunc, got2, addend); | |
8228 | } | |
8229 | if (ent != NULL) | |
8230 | { | |
e054468f AM |
8231 | if (h == NULL && (ent->plt.offset & 1) == 0) |
8232 | { | |
8233 | Elf_Internal_Rela rela; | |
8234 | bfd_byte *loc; | |
8235 | ||
8236 | rela.r_offset = (htab->iplt->output_section->vma | |
8237 | + htab->iplt->output_offset | |
8238 | + ent->plt.offset); | |
8239 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8240 | rela.r_addend = relocation; | |
25f23106 AM |
8241 | loc = htab->reliplt->contents; |
8242 | loc += (htab->reliplt->reloc_count++ | |
8243 | * sizeof (Elf32_External_Rela)); | |
e054468f AM |
8244 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
8245 | ||
8246 | ent->plt.offset |= 1; | |
8247 | } | |
8248 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
8249 | { | |
a7f2871e AM |
8250 | unsigned char *p = ((unsigned char *) htab->glink->contents |
8251 | + ent->glink_offset); | |
8252 | write_glink_stub (ent, htab->iplt, p, info); | |
e054468f AM |
8253 | ent->glink_offset |= 1; |
8254 | } | |
8255 | ||
8256 | unresolved_reloc = FALSE; | |
8257 | if (htab->plt_type == PLT_NEW | |
8258 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8259 | || h == NULL |
8260 | || h->dynindx == -1) | |
e054468f AM |
8261 | relocation = (htab->glink->output_section->vma |
8262 | + htab->glink->output_offset | |
8263 | + (ent->glink_offset & ~1)); | |
8264 | else | |
8265 | relocation = (htab->plt->output_section->vma | |
8266 | + htab->plt->output_offset | |
8267 | + ent->plt.offset); | |
8268 | } | |
8269 | } | |
8270 | ||
7619e7c7 AM |
8271 | addend = rel->r_addend; |
8272 | tls_type = 0; | |
8273 | howto = NULL; | |
55fd94b0 AM |
8274 | if (r_type < R_PPC_max) |
8275 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 8276 | switch (r_type) |
252b5132 RH |
8277 | { |
8278 | default: | |
25f53a85 | 8279 | info->callbacks->einfo |
8de848d8 | 8280 | (_("%P: %B: unknown relocation type %d for symbol %s\n"), |
d003868e | 8281 | input_bfd, (int) r_type, sym_name); |
252b5132 RH |
8282 | |
8283 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8284 | ret = FALSE; |
c316a17c | 8285 | goto copy_reloc; |
252b5132 | 8286 | |
7619e7c7 AM |
8287 | case R_PPC_NONE: |
8288 | case R_PPC_TLS: | |
727fc41e AM |
8289 | case R_PPC_TLSGD: |
8290 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8291 | case R_PPC_EMB_MRKREF: |
8292 | case R_PPC_GNU_VTINHERIT: | |
8293 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 8294 | goto copy_reloc; |
7595d193 | 8295 | |
7619e7c7 AM |
8296 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8297 | address in the GOT as relocation value instead of the | |
8298 | symbol's value itself. Also, create a GOT entry for the | |
8299 | symbol and put the symbol value there. */ | |
8300 | case R_PPC_GOT_TLSGD16: | |
8301 | case R_PPC_GOT_TLSGD16_LO: | |
8302 | case R_PPC_GOT_TLSGD16_HI: | |
8303 | case R_PPC_GOT_TLSGD16_HA: | |
8304 | tls_type = TLS_TLS | TLS_GD; | |
8305 | goto dogot; | |
8306 | ||
8307 | case R_PPC_GOT_TLSLD16: | |
8308 | case R_PPC_GOT_TLSLD16_LO: | |
8309 | case R_PPC_GOT_TLSLD16_HI: | |
8310 | case R_PPC_GOT_TLSLD16_HA: | |
8311 | tls_type = TLS_TLS | TLS_LD; | |
8312 | goto dogot; | |
8313 | ||
8314 | case R_PPC_GOT_TPREL16: | |
8315 | case R_PPC_GOT_TPREL16_LO: | |
8316 | case R_PPC_GOT_TPREL16_HI: | |
8317 | case R_PPC_GOT_TPREL16_HA: | |
8318 | tls_type = TLS_TLS | TLS_TPREL; | |
8319 | goto dogot; | |
8320 | ||
8321 | case R_PPC_GOT_DTPREL16: | |
8322 | case R_PPC_GOT_DTPREL16_LO: | |
8323 | case R_PPC_GOT_DTPREL16_HI: | |
8324 | case R_PPC_GOT_DTPREL16_HA: | |
8325 | tls_type = TLS_TLS | TLS_DTPREL; | |
8326 | goto dogot; | |
8327 | ||
8328 | case R_PPC_GOT16: | |
8329 | case R_PPC_GOT16_LO: | |
8330 | case R_PPC_GOT16_HI: | |
8331 | case R_PPC_GOT16_HA: | |
727fc41e | 8332 | tls_mask = 0; |
7619e7c7 AM |
8333 | dogot: |
8334 | { | |
8335 | /* Relocation is to the entry for this symbol in the global | |
8336 | offset table. */ | |
8337 | bfd_vma off; | |
8338 | bfd_vma *offp; | |
8339 | unsigned long indx; | |
8340 | ||
8341 | if (htab->got == NULL) | |
8342 | abort (); | |
8343 | ||
8344 | indx = 0; | |
8345 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8346 | && (h == NULL |
f5385ebf | 8347 | || !h->def_dynamic)) |
7619e7c7 AM |
8348 | offp = &htab->tlsld_got.offset; |
8349 | else if (h != NULL) | |
8350 | { | |
8351 | bfd_boolean dyn; | |
8352 | dyn = htab->elf.dynamic_sections_created; | |
0e1862bb L |
8353 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
8354 | || (bfd_link_pic (info) | |
7619e7c7 AM |
8355 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
8356 | /* This is actually a static link, or it is a | |
8357 | -Bsymbolic link and the symbol is defined | |
8358 | locally, or the symbol was forced to be local | |
8359 | because of a version file. */ | |
8360 | ; | |
8361 | else | |
8362 | { | |
14acf4dc | 8363 | BFD_ASSERT (h->dynindx != -1); |
7619e7c7 AM |
8364 | indx = h->dynindx; |
8365 | unresolved_reloc = FALSE; | |
8366 | } | |
8367 | offp = &h->got.offset; | |
8368 | } | |
8369 | else | |
8370 | { | |
8371 | if (local_got_offsets == NULL) | |
8372 | abort (); | |
8373 | offp = &local_got_offsets[r_symndx]; | |
8374 | } | |
8375 | ||
8376 | /* The offset must always be a multiple of 4. We use the | |
8377 | least significant bit to record whether we have already | |
8378 | processed this entry. */ | |
8379 | off = *offp; | |
8380 | if ((off & 1) != 0) | |
8381 | off &= ~1; | |
8382 | else | |
8383 | { | |
70bccea4 AM |
8384 | unsigned int tls_m = (tls_mask |
8385 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
8386 | | TLS_TPREL | TLS_TPRELGD)); | |
8387 | ||
8388 | if (offp == &htab->tlsld_got.offset) | |
8389 | tls_m = TLS_LD; | |
8390 | else if (h == NULL | |
f5385ebf | 8391 | || !h->def_dynamic) |
70bccea4 AM |
8392 | tls_m &= ~TLS_LD; |
8393 | ||
8394 | /* We might have multiple got entries for this sym. | |
8395 | Initialize them all. */ | |
8396 | do | |
7619e7c7 | 8397 | { |
70bccea4 AM |
8398 | int tls_ty = 0; |
8399 | ||
8400 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8401 | { |
70bccea4 AM |
8402 | tls_ty = TLS_TLS | TLS_LD; |
8403 | tls_m &= ~TLS_LD; | |
8404 | } | |
8405 | else if ((tls_m & TLS_GD) != 0) | |
8406 | { | |
8407 | tls_ty = TLS_TLS | TLS_GD; | |
8408 | tls_m &= ~TLS_GD; | |
8409 | } | |
8410 | else if ((tls_m & TLS_DTPREL) != 0) | |
8411 | { | |
8412 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8413 | tls_m &= ~TLS_DTPREL; | |
8414 | } | |
8415 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8416 | { | |
8417 | tls_ty = TLS_TLS | TLS_TPREL; | |
8418 | tls_m = 0; | |
7619e7c7 | 8419 | } |
7619e7c7 | 8420 | |
70bccea4 | 8421 | /* Generate relocs for the dynamic linker. */ |
0e1862bb | 8422 | if ((bfd_link_pic (info) || indx != 0) |
d6e14abc AM |
8423 | && (offp == &htab->tlsld_got.offset |
8424 | || h == NULL | |
4e795f50 AM |
8425 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
8426 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 8427 | { |
91e21fb7 | 8428 | asection *rsec = htab->relgot; |
91d6fa6a | 8429 | bfd_byte * loc; |
91e21fb7 | 8430 | |
0bed072f AM |
8431 | if (ifunc != NULL) |
8432 | rsec = htab->reliplt; | |
70bccea4 AM |
8433 | outrel.r_offset = (htab->got->output_section->vma |
8434 | + htab->got->output_offset | |
8435 | + off); | |
e515b051 | 8436 | outrel.r_addend = 0; |
70bccea4 AM |
8437 | if (tls_ty & (TLS_LD | TLS_GD)) |
8438 | { | |
8439 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
8440 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8441 | { | |
25f23106 AM |
8442 | loc = rsec->contents; |
8443 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8444 | * sizeof (Elf32_External_Rela)); |
8445 | bfd_elf32_swap_reloca_out (output_bfd, | |
8446 | &outrel, loc); | |
e515b051 | 8447 | outrel.r_offset += 4; |
70bccea4 AM |
8448 | outrel.r_info |
8449 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
8450 | } |
8451 | } | |
8452 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
8453 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
8454 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8455 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 8456 | else if (indx != 0) |
70bccea4 | 8457 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
8458 | else if (ifunc != NULL) |
8459 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8460 | else | |
8461 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 8462 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
8463 | { |
8464 | outrel.r_addend += relocation; | |
8465 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
8466 | { |
8467 | if (htab->elf.tls_sec == NULL) | |
8468 | outrel.r_addend = 0; | |
8469 | else | |
8470 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
8471 | } | |
e515b051 | 8472 | } |
25f23106 AM |
8473 | loc = rsec->contents; |
8474 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8475 | * sizeof (Elf32_External_Rela)); |
8476 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
8477 | } |
8478 | ||
70bccea4 AM |
8479 | /* Init the .got section contents if we're not |
8480 | emitting a reloc. */ | |
8481 | else | |
7619e7c7 | 8482 | { |
70bccea4 AM |
8483 | bfd_vma value = relocation; |
8484 | ||
7b609f53 AM |
8485 | if (tls_ty == (TLS_TLS | TLS_LD)) |
8486 | value = 1; | |
8487 | else if (tls_ty != 0) | |
70bccea4 | 8488 | { |
989f9879 AM |
8489 | if (htab->elf.tls_sec == NULL) |
8490 | value = 0; | |
8491 | else | |
8492 | { | |
8493 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
8494 | if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8495 | value += DTP_OFFSET - TP_OFFSET; | |
8496 | } | |
70bccea4 | 8497 | |
7b609f53 AM |
8498 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8499 | { | |
8500 | bfd_put_32 (output_bfd, value, | |
8501 | htab->got->contents + off + 4); | |
8502 | value = 1; | |
8503 | } | |
70bccea4 | 8504 | } |
70bccea4 AM |
8505 | bfd_put_32 (output_bfd, value, |
8506 | htab->got->contents + off); | |
7619e7c7 | 8507 | } |
70bccea4 AM |
8508 | |
8509 | off += 4; | |
8510 | if (tls_ty & (TLS_LD | TLS_GD)) | |
8511 | off += 4; | |
7619e7c7 | 8512 | } |
70bccea4 AM |
8513 | while (tls_m != 0); |
8514 | ||
8515 | off = *offp; | |
8516 | *offp = off | 1; | |
7619e7c7 AM |
8517 | } |
8518 | ||
8519 | if (off >= (bfd_vma) -2) | |
8520 | abort (); | |
8521 | ||
70bccea4 AM |
8522 | if ((tls_type & TLS_TLS) != 0) |
8523 | { | |
8524 | if (tls_type != (TLS_TLS | TLS_LD)) | |
8525 | { | |
8526 | if ((tls_mask & TLS_LD) != 0 | |
8527 | && !(h == NULL | |
f5385ebf | 8528 | || !h->def_dynamic)) |
70bccea4 AM |
8529 | off += 8; |
8530 | if (tls_type != (TLS_TLS | TLS_GD)) | |
8531 | { | |
8532 | if ((tls_mask & TLS_GD) != 0) | |
8533 | off += 8; | |
8534 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
8535 | { | |
8536 | if ((tls_mask & TLS_DTPREL) != 0) | |
8537 | off += 4; | |
8538 | } | |
8539 | } | |
8540 | } | |
8541 | } | |
8542 | ||
d3e454b9 AM |
8543 | /* If here for a picfixup, we're done. */ |
8544 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 8545 | goto copy_reloc; |
d3e454b9 | 8546 | |
e87d4038 AM |
8547 | relocation = (htab->got->output_section->vma |
8548 | + htab->got->output_offset | |
8549 | + off | |
8550 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
8551 | |
8552 | /* Addends on got relocations don't make much sense. | |
8553 | x+off@got is actually x@got+off, and since the got is | |
8554 | generated by a hash table traversal, the value in the | |
8555 | got at entry m+n bears little relation to the entry m. */ | |
8556 | if (addend != 0) | |
25f53a85 | 8557 | info->callbacks->einfo |
8de848d8 | 8558 | (_("%P: %H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 8559 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8560 | howto->name, |
7619e7c7 AM |
8561 | sym_name); |
8562 | } | |
86c95733 | 8563 | break; |
7619e7c7 | 8564 | |
86c95733 | 8565 | /* Relocations that need no special processing. */ |
7619e7c7 | 8566 | case R_PPC_LOCAL24PC: |
252b5132 RH |
8567 | /* It makes no sense to point a local relocation |
8568 | at a symbol not in this object. */ | |
7b609f53 | 8569 | if (unresolved_reloc) |
252b5132 | 8570 | { |
464e1740 ILT |
8571 | if (! (*info->callbacks->undefined_symbol) (info, |
8572 | h->root.root.string, | |
8573 | input_bfd, | |
8574 | input_section, | |
5cc7c785 | 8575 | rel->r_offset, |
b34976b6 AM |
8576 | TRUE)) |
8577 | return FALSE; | |
c316a17c | 8578 | goto copy_reloc; |
252b5132 RH |
8579 | } |
8580 | break; | |
8581 | ||
7619e7c7 AM |
8582 | case R_PPC_DTPREL16: |
8583 | case R_PPC_DTPREL16_LO: | |
8584 | case R_PPC_DTPREL16_HI: | |
8585 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8586 | if (htab->elf.tls_sec != NULL) |
8587 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8588 | break; |
8589 | ||
70bccea4 AM |
8590 | /* Relocations that may need to be propagated if this is a shared |
8591 | object. */ | |
7619e7c7 AM |
8592 | case R_PPC_TPREL16: |
8593 | case R_PPC_TPREL16_LO: | |
8594 | case R_PPC_TPREL16_HI: | |
8595 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8596 | if (h != NULL |
8597 | && h->root.type == bfd_link_hash_undefweak | |
8598 | && h->dynindx == -1) | |
8599 | { | |
8600 | /* Make this relocation against an undefined weak symbol | |
8601 | resolve to zero. This is really just a tweak, since | |
8602 | code using weak externs ought to check that they are | |
8603 | defined before using them. */ | |
8604 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
8605 | unsigned int insn = bfd_get_32 (output_bfd, p); | |
8606 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); | |
8607 | if (insn != 0) | |
8608 | bfd_put_32 (output_bfd, insn, p); | |
8609 | break; | |
8610 | } | |
989f9879 AM |
8611 | if (htab->elf.tls_sec != NULL) |
8612 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8613 | /* The TPREL16 relocs shouldn't really be used in shared |
8614 | libs as they will result in DT_TEXTREL being set, but | |
8615 | support them anyway. */ | |
8616 | goto dodyn; | |
8617 | ||
8618 | case R_PPC_TPREL32: | |
989f9879 AM |
8619 | if (htab->elf.tls_sec != NULL) |
8620 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8621 | goto dodyn; |
8622 | ||
8623 | case R_PPC_DTPREL32: | |
989f9879 AM |
8624 | if (htab->elf.tls_sec != NULL) |
8625 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8626 | goto dodyn; |
8627 | ||
e515b051 AM |
8628 | case R_PPC_DTPMOD32: |
8629 | relocation = 1; | |
8630 | addend = 0; | |
8631 | goto dodyn; | |
8632 | ||
d7128ce4 AM |
8633 | case R_PPC_REL16: |
8634 | case R_PPC_REL16_LO: | |
8635 | case R_PPC_REL16_HI: | |
8636 | case R_PPC_REL16_HA: | |
a680de9a | 8637 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8638 | break; |
8639 | ||
7619e7c7 | 8640 | case R_PPC_REL32: |
625af618 AM |
8641 | if (h == NULL || h == htab->elf.hgot) |
8642 | break; | |
8643 | /* fall through */ | |
8644 | ||
8645 | case R_PPC_ADDR32: | |
8646 | case R_PPC_ADDR16: | |
8647 | case R_PPC_ADDR16_LO: | |
8648 | case R_PPC_ADDR16_HI: | |
8649 | case R_PPC_ADDR16_HA: | |
8650 | case R_PPC_UADDR32: | |
8651 | case R_PPC_UADDR16: | |
8652 | goto dodyn; | |
8653 | ||
b9c361e0 JL |
8654 | case R_PPC_VLE_REL8: |
8655 | case R_PPC_VLE_REL15: | |
8656 | case R_PPC_VLE_REL24: | |
625af618 | 8657 | case R_PPC_REL24: |
7619e7c7 AM |
8658 | case R_PPC_REL14: |
8659 | case R_PPC_REL14_BRTAKEN: | |
8660 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8661 | /* If these relocations are not to a named symbol, they can be |
8662 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8663 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8664 | || h == htab->elf.hgot) |
252b5132 | 8665 | break; |
70bccea4 | 8666 | /* fall through */ |
252b5132 | 8667 | |
7619e7c7 | 8668 | case R_PPC_ADDR24: |
7619e7c7 AM |
8669 | case R_PPC_ADDR14: |
8670 | case R_PPC_ADDR14_BRTAKEN: | |
8671 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8672 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8673 | break; |
8674 | /* fall through */ | |
8675 | ||
7619e7c7 | 8676 | dodyn: |
3348747a NS |
8677 | if ((input_section->flags & SEC_ALLOC) == 0 |
8678 | || is_vxworks_tls) | |
c87b5a93 | 8679 | break; |
c87b5a93 | 8680 | |
0e1862bb | 8681 | if ((bfd_link_pic (info) |
89200bf8 AM |
8682 | && !(h != NULL |
8683 | && ((h->root.type == bfd_link_hash_undefined | |
8684 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
8685 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
8686 | || (h->root.type == bfd_link_hash_undefweak | |
8687 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))) | |
1d483afe | 8688 | && (must_be_dyn_reloc (info, r_type) |
f6c52c13 | 8689 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe | 8690 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 8691 | && !bfd_link_pic (info) |
ee05f2fe AM |
8692 | && h != NULL |
8693 | && h->dynindx != -1 | |
f5385ebf | 8694 | && !h->non_got_ref |
d3e454b9 AM |
8695 | && !h->def_regular |
8696 | && !(h->protected_def | |
8697 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8698 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8699 | && htab->params->pic_fixup > 0))) | |
252b5132 | 8700 | { |
0bb2d96a | 8701 | int skip; |
f95f8542 AM |
8702 | bfd_byte *loc; |
8703 | asection *sreloc; | |
252b5132 | 8704 | #ifdef DEBUG |
55fd94b0 AM |
8705 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8706 | "create relocation for %s\n", | |
70bccea4 AM |
8707 | (h && h->root.root.string |
8708 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8709 | #endif |
8710 | ||
8711 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8712 | are copied into the output file to be resolved at run |
8713 | time. */ | |
f95f8542 AM |
8714 | sreloc = elf_section_data (input_section)->sreloc; |
8715 | if (ifunc) | |
8716 | sreloc = htab->reliplt; | |
252b5132 | 8717 | if (sreloc == NULL) |
f95f8542 | 8718 | return FALSE; |
252b5132 | 8719 | |
0bb2d96a | 8720 | skip = 0; |
5b914448 AM |
8721 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8722 | input_section, | |
8723 | rel->r_offset); | |
0bb2d96a JJ |
8724 | if (outrel.r_offset == (bfd_vma) -1 |
8725 | || outrel.r_offset == (bfd_vma) -2) | |
8726 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8727 | outrel.r_offset += (input_section->output_section->vma |
8728 | + input_section->output_offset); | |
8729 | ||
8730 | if (skip) | |
8731 | memset (&outrel, 0, sizeof outrel); | |
89200bf8 AM |
8732 | else if ((h != NULL |
8733 | && (h->root.type == bfd_link_hash_undefined | |
8734 | || h->root.type == bfd_link_hash_undefweak)) | |
8735 | || !SYMBOL_REFERENCES_LOCAL (info, h)) | |
252b5132 | 8736 | { |
14acf4dc | 8737 | BFD_ASSERT (h->dynindx != -1); |
7619e7c7 | 8738 | unresolved_reloc = FALSE; |
252b5132 RH |
8739 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
8740 | outrel.r_addend = rel->r_addend; | |
8741 | } | |
8742 | else | |
8743 | { | |
47388f4c AM |
8744 | outrel.r_addend = relocation + rel->r_addend; |
8745 | ||
25f23106 | 8746 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8747 | { |
89200bf8 | 8748 | long indx = 0; |
252b5132 | 8749 | |
25f23106 AM |
8750 | if (ifunc != NULL) |
8751 | { | |
8752 | /* If we get here when building a static | |
8753 | executable, then the libc startup function | |
8754 | responsible for applying indirect function | |
8755 | relocations is going to complain about | |
8756 | the reloc type. | |
8757 | If we get here when building a dynamic | |
8758 | executable, it will be because we have | |
8759 | a text relocation. The dynamic loader | |
8760 | will set the text segment writable and | |
8761 | non-executable to apply text relocations. | |
8762 | So we'll segfault when trying to run the | |
8763 | indirection function to resolve the reloc. */ | |
25f53a85 | 8764 | info->callbacks->einfo |
8de848d8 | 8765 | (_("%P: %H: relocation %s for indirect " |
25f53a85 AM |
8766 | "function %s unsupported\n"), |
8767 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8768 | howto->name, |
8769 | sym_name); | |
8770 | ret = FALSE; | |
8771 | } | |
cf35638d | 8772 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8773 | ; |
252b5132 RH |
8774 | else if (sec == NULL || sec->owner == NULL) |
8775 | { | |
8776 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8777 | ret = FALSE; |
252b5132 RH |
8778 | } |
8779 | else | |
8780 | { | |
8781 | asection *osec; | |
8782 | ||
47388f4c AM |
8783 | /* We are turning this relocation into one |
8784 | against a section symbol. It would be | |
8785 | proper to subtract the symbol's value, | |
8786 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8787 | but ld.so expects buggy relocs. |
8788 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
8789 | osec = sec->output_section; |
8790 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
8791 | if (indx == 0) |
8792 | { | |
8793 | osec = htab->elf.text_index_section; | |
8794 | indx = elf_section_data (osec)->dynindx; | |
8795 | } | |
8796 | BFD_ASSERT (indx != 0); | |
252b5132 | 8797 | #ifdef DEBUG |
74541ad4 | 8798 | if (indx == 0) |
e460dd0d | 8799 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
8800 | indx, osec->name, osec->flags, |
8801 | h->root.root.string); | |
252b5132 RH |
8802 | #endif |
8803 | } | |
8804 | ||
8805 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8806 | } |
25f23106 AM |
8807 | else if (ifunc != NULL) |
8808 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8809 | else | |
8810 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8811 | } |
8812 | ||
947216bf AM |
8813 | loc = sreloc->contents; |
8814 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8815 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8816 | |
2243deae | 8817 | if (skip == -1) |
c316a17c | 8818 | goto copy_reloc; |
2243deae L |
8819 | |
8820 | /* This reloc will be computed at runtime. We clear the memory | |
8821 | so that it contains predictable value. */ | |
8822 | if (! skip | |
8823 | && ((input_section->flags & SEC_ALLOC) != 0 | |
8824 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
8825 | { | |
8826 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8827 | addend = 0; | |
8828 | break; | |
8829 | } | |
252b5132 | 8830 | } |
252b5132 RH |
8831 | break; |
8832 | ||
32af9f6e AM |
8833 | case R_PPC_RELAX_PLT: |
8834 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8835 | if (h != NULL) |
8836 | { | |
32af9f6e AM |
8837 | struct plt_entry *ent; |
8838 | bfd_vma got2_addend = 0; | |
8839 | ||
8840 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8841 | { | |
0e1862bb | 8842 | if (bfd_link_pic (info)) |
32af9f6e AM |
8843 | got2_addend = addend; |
8844 | addend = 0; | |
8845 | } | |
8846 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8847 | if (htab->plt_type == PLT_NEW) |
8848 | relocation = (htab->glink->output_section->vma | |
8849 | + htab->glink->output_offset | |
8850 | + ent->glink_offset); | |
8851 | else | |
8852 | relocation = (htab->plt->output_section->vma | |
8853 | + htab->plt->output_offset | |
8854 | + ent->plt.offset); | |
8855 | } | |
b4a38de6 AM |
8856 | /* Fall thru */ |
8857 | ||
32af9f6e | 8858 | case R_PPC_RELAX: |
9abc968f | 8859 | { |
53291d1f AM |
8860 | const int *stub; |
8861 | size_t size; | |
8862 | size_t insn_offset = rel->r_offset; | |
8863 | unsigned int insn; | |
9abc968f | 8864 | |
0e1862bb | 8865 | if (bfd_link_pic (info)) |
53291d1f AM |
8866 | { |
8867 | relocation -= (input_section->output_section->vma | |
8868 | + input_section->output_offset | |
8869 | + rel->r_offset - 4); | |
8870 | stub = shared_stub_entry; | |
8871 | bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12); | |
8872 | bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8); | |
8873 | bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4); | |
8874 | stub += 3; | |
8875 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8876 | } | |
8877 | else | |
8878 | { | |
8879 | stub = stub_entry; | |
8880 | size = ARRAY_SIZE (stub_entry); | |
8881 | } | |
9abc968f | 8882 | |
9abc968f | 8883 | relocation += addend; |
0e1862bb | 8884 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8885 | relocation = 0; |
8886 | ||
8887 | /* First insn is HA, second is LO. */ | |
8888 | insn = *stub++; | |
8889 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
8890 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8891 | insn_offset += 4; | |
8892 | ||
8893 | insn = *stub++; | |
8894 | insn |= relocation & 0xffff; | |
8895 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8896 | insn_offset += 4; | |
8897 | size -= 2; | |
8898 | ||
8899 | while (size != 0) | |
8900 | { | |
8901 | insn = *stub++; | |
8902 | --size; | |
8903 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8904 | insn_offset += 4; | |
8905 | } | |
9bc4e62b NS |
8906 | |
8907 | /* Rewrite the reloc and convert one of the trailing nop | |
8908 | relocs to describe this relocation. */ | |
8909 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8910 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
8911 | wrel->r_offset = rel->r_offset + d_offset; |
8912 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8913 | wrel->r_addend = rel->r_addend; | |
8914 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
8915 | wrel++, rel++; | |
8916 | wrel->r_offset += 4; | |
8917 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 8918 | } |
8517fae7 | 8919 | continue; |
deaaf2f3 | 8920 | |
70bccea4 | 8921 | /* Indirect .sdata relocation. */ |
7619e7c7 | 8922 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 8923 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
8924 | if (!is_static_defined (htab->sdata[0].sym)) |
8925 | { | |
8926 | unresolved_reloc = TRUE; | |
8927 | break; | |
8928 | } | |
7619e7c7 | 8929 | relocation |
76750a2f AM |
8930 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
8931 | h, relocation, rel); | |
bd6c6e2b | 8932 | addend = 0; |
252b5132 RH |
8933 | break; |
8934 | ||
70bccea4 | 8935 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 8936 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 8937 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
8938 | if (!is_static_defined (htab->sdata[1].sym)) |
8939 | { | |
8940 | unresolved_reloc = TRUE; | |
8941 | break; | |
8942 | } | |
7619e7c7 | 8943 | relocation |
76750a2f AM |
8944 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
8945 | h, relocation, rel); | |
bd6c6e2b | 8946 | addend = 0; |
252b5132 RH |
8947 | break; |
8948 | ||
70bccea4 AM |
8949 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
8950 | section, not the actual VMA. This is appropriate when generating | |
8951 | an embedded ELF object, for which the .got section acts like the | |
8952 | AIX .toc section. */ | |
7619e7c7 | 8953 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
8954 | if (sec == NULL || sec->output_section == NULL) |
8955 | { | |
8956 | unresolved_reloc = TRUE; | |
8957 | break; | |
8958 | } | |
a0f49396 NC |
8959 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
8960 | ".got") == 0 | |
8961 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
8962 | ".cgot") == 0); | |
252b5132 | 8963 | |
3b4f3a11 | 8964 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
8965 | break; |
8966 | ||
7619e7c7 | 8967 | case R_PPC_PLTREL24: |
f75e0e33 AM |
8968 | if (h != NULL && ifunc == NULL) |
8969 | { | |
cbf95972 AM |
8970 | struct plt_entry *ent; |
8971 | ||
8972 | ent = find_plt_ent (&h->plt.plist, got2, | |
8973 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 AM |
8974 | if (ent == NULL |
8975 | || htab->plt == NULL) | |
8976 | { | |
8977 | /* We didn't make a PLT entry for this symbol. This | |
8978 | happens when statically linking PIC code, or when | |
8979 | using -Bsymbolic. */ | |
8980 | } | |
8981 | else | |
8982 | { | |
8983 | /* Relocation is to the entry for this symbol in the | |
8984 | procedure linkage table. */ | |
8985 | unresolved_reloc = FALSE; | |
8986 | if (htab->plt_type == PLT_NEW) | |
8987 | relocation = (htab->glink->output_section->vma | |
8988 | + htab->glink->output_offset | |
8989 | + ent->glink_offset); | |
8990 | else | |
8991 | relocation = (htab->plt->output_section->vma | |
8992 | + htab->plt->output_offset | |
8993 | + ent->plt.offset); | |
8994 | } | |
8995 | } | |
252b5132 | 8996 | |
f75e0e33 AM |
8997 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
8998 | addend specifies the GOT pointer offset within .got2. | |
8999 | Don't apply it to the relocation field. */ | |
9000 | addend = 0; | |
8da6118f | 9001 | break; |
252b5132 | 9002 | |
70bccea4 | 9003 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 9004 | case R_PPC_SDAREL16: |
252b5132 RH |
9005 | { |
9006 | const char *name; | |
bd6c6e2b | 9007 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 9008 | |
bd6c6e2b AM |
9009 | if (sec == NULL |
9010 | || sec->output_section == NULL | |
9011 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9012 | { |
9013 | unresolved_reloc = TRUE; | |
9014 | break; | |
9015 | } | |
bd6c6e2b | 9016 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9017 | |
a0f49396 | 9018 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9019 | if (!(strcmp (name, ".sdata") == 0 |
9020 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 9021 | { |
25f53a85 | 9022 | info->callbacks->einfo |
8de848d8 | 9023 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9024 | "in the wrong output section (%s)\n"), |
d003868e | 9025 | input_bfd, |
55fd94b0 AM |
9026 | sym_name, |
9027 | howto->name, | |
9028 | name); | |
252b5132 | 9029 | } |
252b5132 RH |
9030 | } |
9031 | break; | |
9032 | ||
70bccea4 | 9033 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 9034 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
9035 | { |
9036 | const char *name; | |
bd6c6e2b | 9037 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 9038 | |
bd6c6e2b AM |
9039 | if (sec == NULL |
9040 | || sec->output_section == NULL | |
9041 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9042 | { |
9043 | unresolved_reloc = TRUE; | |
9044 | break; | |
9045 | } | |
bd6c6e2b | 9046 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9047 | |
a0f49396 | 9048 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9049 | if (!(strcmp (name, ".sdata2") == 0 |
9050 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 9051 | { |
25f53a85 | 9052 | info->callbacks->einfo |
8de848d8 | 9053 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9054 | "in the wrong output section (%s)\n"), |
d003868e | 9055 | input_bfd, |
55fd94b0 AM |
9056 | sym_name, |
9057 | howto->name, | |
9058 | name); | |
252b5132 | 9059 | } |
252b5132 RH |
9060 | } |
9061 | break; | |
9062 | ||
b9c361e0 | 9063 | case R_PPC_VLE_LO16A: |
86c95733 AM |
9064 | relocation = relocation + addend; |
9065 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9066 | relocation, split16a_type); | |
c316a17c | 9067 | goto copy_reloc; |
b9c361e0 JL |
9068 | |
9069 | case R_PPC_VLE_LO16D: | |
86c95733 AM |
9070 | relocation = relocation + addend; |
9071 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9072 | relocation, split16d_type); | |
c316a17c | 9073 | goto copy_reloc; |
b9c361e0 JL |
9074 | |
9075 | case R_PPC_VLE_HI16A: | |
86c95733 AM |
9076 | relocation = (relocation + addend) >> 16; |
9077 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9078 | relocation, split16a_type); | |
c316a17c | 9079 | goto copy_reloc; |
b9c361e0 JL |
9080 | |
9081 | case R_PPC_VLE_HI16D: | |
86c95733 AM |
9082 | relocation = (relocation + addend) >> 16; |
9083 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9084 | relocation, split16d_type); | |
c316a17c | 9085 | goto copy_reloc; |
b9c361e0 JL |
9086 | |
9087 | case R_PPC_VLE_HA16A: | |
86c95733 AM |
9088 | relocation = (relocation + addend + 0x8000) >> 16; |
9089 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9090 | relocation, split16a_type); | |
c316a17c | 9091 | goto copy_reloc; |
b9c361e0 JL |
9092 | |
9093 | case R_PPC_VLE_HA16D: | |
86c95733 AM |
9094 | relocation = (relocation + addend + 0x8000) >> 16; |
9095 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9096 | relocation, split16d_type); | |
c316a17c | 9097 | goto copy_reloc; |
b9c361e0 | 9098 | |
70bccea4 | 9099 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 9100 | case R_PPC_EMB_SDA21: |
b9c361e0 | 9101 | case R_PPC_VLE_SDA21: |
7619e7c7 | 9102 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 9103 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
9104 | { |
9105 | const char *name; | |
9106 | int reg; | |
86c95733 | 9107 | unsigned int insn; |
bd6c6e2b | 9108 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 9109 | |
3b4f3a11 AM |
9110 | if (sec == NULL || sec->output_section == NULL) |
9111 | { | |
9112 | unresolved_reloc = TRUE; | |
9113 | break; | |
9114 | } | |
9115 | ||
a0f49396 | 9116 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9117 | if (strcmp (name, ".sdata") == 0 |
9118 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
9119 | { |
9120 | reg = 13; | |
bd6c6e2b | 9121 | sda = htab->sdata[0].sym; |
252b5132 | 9122 | } |
93d1b056 AM |
9123 | else if (strcmp (name, ".sdata2") == 0 |
9124 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
9125 | { |
9126 | reg = 2; | |
bd6c6e2b | 9127 | sda = htab->sdata[1].sym; |
252b5132 | 9128 | } |
8da6118f KH |
9129 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
9130 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
9131 | { |
9132 | reg = 0; | |
9133 | } | |
252b5132 RH |
9134 | else |
9135 | { | |
25f53a85 | 9136 | info->callbacks->einfo |
8de848d8 | 9137 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9138 | "in the wrong output section (%s)\n"), |
d003868e | 9139 | input_bfd, |
55fd94b0 AM |
9140 | sym_name, |
9141 | howto->name, | |
9142 | name); | |
252b5132 RH |
9143 | |
9144 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9145 | ret = FALSE; |
c316a17c | 9146 | goto copy_reloc; |
252b5132 RH |
9147 | } |
9148 | ||
bd6c6e2b AM |
9149 | if (sda != NULL) |
9150 | { | |
9151 | if (!is_static_defined (sda)) | |
9152 | { | |
9153 | unresolved_reloc = TRUE; | |
9154 | break; | |
9155 | } | |
9156 | addend -= SYM_VAL (sda); | |
9157 | } | |
9158 | ||
86c95733 | 9159 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
b9c361e0 JL |
9160 | if (reg == 0 |
9161 | && (r_type == R_PPC_VLE_SDA21 | |
9162 | || r_type == R_PPC_VLE_SDA21_LO)) | |
9163 | { | |
86c95733 AM |
9164 | relocation = relocation + addend; |
9165 | addend = 0; | |
9166 | ||
9167 | /* Force e_li insn, keeping RT from original insn. */ | |
9168 | insn &= 0x1f << 21; | |
9169 | insn |= 28u << 26; | |
9170 | ||
9171 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
9172 | /* Top 4 bits of value to 17..20. */ | |
9173 | insn |= (relocation & 0xf0000) >> 5; | |
9174 | /* Next 5 bits of the value to 11..15. */ | |
9175 | insn |= (relocation & 0xf800) << 5; | |
9176 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
9177 | insn |= relocation & 0x7ff; | |
9178 | ||
c3301df1 AM |
9179 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
9180 | ||
9181 | if (r_type == R_PPC_VLE_SDA21 | |
9182 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
9183 | goto overflow; | |
c316a17c | 9184 | goto copy_reloc; |
b9c361e0 JL |
9185 | } |
9186 | else if (r_type == R_PPC_EMB_SDA21 | |
9187 | || r_type == R_PPC_VLE_SDA21 | |
9188 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 9189 | { |
86c95733 | 9190 | /* Fill in register field. */ |
252b5132 | 9191 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 9192 | } |
86c95733 | 9193 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
9194 | } |
9195 | break; | |
9196 | ||
b9c361e0 JL |
9197 | case R_PPC_VLE_SDAREL_LO16A: |
9198 | case R_PPC_VLE_SDAREL_LO16D: | |
9199 | case R_PPC_VLE_SDAREL_HI16A: | |
9200 | case R_PPC_VLE_SDAREL_HI16D: | |
9201 | case R_PPC_VLE_SDAREL_HA16A: | |
9202 | case R_PPC_VLE_SDAREL_HA16D: | |
9203 | { | |
9204 | bfd_vma value; | |
9205 | const char *name; | |
9206 | //int reg; | |
9207 | struct elf_link_hash_entry *sda = NULL; | |
9208 | ||
9209 | if (sec == NULL || sec->output_section == NULL) | |
9210 | { | |
9211 | unresolved_reloc = TRUE; | |
9212 | break; | |
9213 | } | |
9214 | ||
a0f49396 | 9215 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9216 | if (strcmp (name, ".sdata") == 0 |
9217 | || strcmp (name, ".sbss") == 0) | |
b9c361e0 JL |
9218 | { |
9219 | //reg = 13; | |
9220 | sda = htab->sdata[0].sym; | |
9221 | } | |
93d1b056 AM |
9222 | else if (strcmp (name, ".sdata2") == 0 |
9223 | || strcmp (name, ".sbss2") == 0) | |
b9c361e0 JL |
9224 | { |
9225 | //reg = 2; | |
9226 | sda = htab->sdata[1].sym; | |
9227 | } | |
9228 | else | |
9229 | { | |
9230 | (*_bfd_error_handler) | |
9231 | (_("%B: the target (%s) of a %s relocation is " | |
9232 | "in the wrong output section (%s)"), | |
9233 | input_bfd, | |
9234 | sym_name, | |
9235 | howto->name, | |
9236 | name); | |
9237 | ||
9238 | bfd_set_error (bfd_error_bad_value); | |
9239 | ret = FALSE; | |
c316a17c | 9240 | goto copy_reloc; |
b9c361e0 JL |
9241 | } |
9242 | ||
9243 | if (sda != NULL) | |
9244 | { | |
9245 | if (!is_static_defined (sda)) | |
9246 | { | |
9247 | unresolved_reloc = TRUE; | |
9248 | break; | |
9249 | } | |
9250 | } | |
9251 | ||
86c95733 AM |
9252 | value = (sda->root.u.def.section->output_section->vma |
9253 | + sda->root.u.def.section->output_offset | |
9254 | + addend); | |
9255 | ||
9256 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
9257 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9258 | value, split16a_type); | |
9259 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) | |
9260 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9261 | value, split16d_type); | |
9262 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) | |
b9c361e0 | 9263 | { |
86c95733 AM |
9264 | value = value >> 16; |
9265 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9266 | value, split16a_type); | |
b9c361e0 | 9267 | } |
86c95733 | 9268 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9269 | { |
86c95733 AM |
9270 | value = value >> 16; |
9271 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9272 | value, split16d_type); | |
b9c361e0 | 9273 | } |
86c95733 | 9274 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9275 | { |
86c95733 AM |
9276 | value = (value + 0x8000) >> 16; |
9277 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9278 | value, split16a_type); | |
b9c361e0 | 9279 | } |
86c95733 | 9280 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9281 | { |
86c95733 AM |
9282 | value = (value + 0x8000) >> 16; |
9283 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9284 | value, split16d_type); | |
b9c361e0 JL |
9285 | } |
9286 | } | |
c316a17c | 9287 | goto copy_reloc; |
b9c361e0 | 9288 | |
70bccea4 | 9289 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9290 | case R_PPC_SECTOFF: |
9291 | case R_PPC_SECTOFF_LO: | |
9292 | case R_PPC_SECTOFF_HI: | |
9293 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9294 | if (sec == NULL || sec->output_section == NULL) |
9295 | { | |
9296 | unresolved_reloc = TRUE; | |
9297 | break; | |
9298 | } | |
252b5132 | 9299 | addend -= sec->output_section->vma; |
252b5132 RH |
9300 | break; |
9301 | ||
70bccea4 | 9302 | /* Negative relocations. */ |
7619e7c7 AM |
9303 | case R_PPC_EMB_NADDR32: |
9304 | case R_PPC_EMB_NADDR16: | |
9305 | case R_PPC_EMB_NADDR16_LO: | |
9306 | case R_PPC_EMB_NADDR16_HI: | |
9307 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9308 | addend -= 2 * relocation; |
252b5132 RH |
9309 | break; |
9310 | ||
7619e7c7 AM |
9311 | case R_PPC_COPY: |
9312 | case R_PPC_GLOB_DAT: | |
9313 | case R_PPC_JMP_SLOT: | |
9314 | case R_PPC_RELATIVE: | |
e054468f | 9315 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9316 | case R_PPC_PLT32: |
9317 | case R_PPC_PLTREL32: | |
9318 | case R_PPC_PLT16_LO: | |
9319 | case R_PPC_PLT16_HI: | |
9320 | case R_PPC_PLT16_HA: | |
9321 | case R_PPC_ADDR30: | |
9322 | case R_PPC_EMB_RELSEC16: | |
9323 | case R_PPC_EMB_RELST_LO: | |
9324 | case R_PPC_EMB_RELST_HI: | |
9325 | case R_PPC_EMB_RELST_HA: | |
9326 | case R_PPC_EMB_BIT_FLD: | |
25f53a85 | 9327 | info->callbacks->einfo |
8de848d8 | 9328 | (_("%P: %B: relocation %s is not yet supported for symbol %s\n"), |
d003868e | 9329 | input_bfd, |
7619e7c7 AM |
9330 | howto->name, |
9331 | sym_name); | |
252b5132 RH |
9332 | |
9333 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9334 | ret = FALSE; |
c316a17c | 9335 | goto copy_reloc; |
7619e7c7 | 9336 | } |
252b5132 | 9337 | |
7619e7c7 AM |
9338 | /* Do any further special processing. */ |
9339 | switch (r_type) | |
9340 | { | |
9341 | default: | |
9342 | break; | |
9343 | ||
9344 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 9345 | case R_PPC_REL16_HA: |
a680de9a | 9346 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
9347 | case R_PPC_SECTOFF_HA: |
9348 | case R_PPC_TPREL16_HA: | |
9349 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
9350 | case R_PPC_EMB_NADDR16_HA: |
9351 | case R_PPC_EMB_RELST_HA: | |
9352 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 9353 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
9354 | 'sec' would be NULL, and we should leave the symbol |
9355 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
9356 | if (sec == NULL) |
9357 | break; | |
9358 | /* Fall thru */ | |
9359 | ||
9360 | case R_PPC_PLT16_HA: | |
9361 | case R_PPC_GOT16_HA: | |
9362 | case R_PPC_GOT_TLSGD16_HA: | |
9363 | case R_PPC_GOT_TLSLD16_HA: | |
9364 | case R_PPC_GOT_TPREL16_HA: | |
9365 | case R_PPC_GOT_DTPREL16_HA: | |
9366 | /* Add 0x10000 if sign bit in 0:15 is set. | |
9367 | Bits 0:15 are not used. */ | |
9368 | addend += 0x8000; | |
7619e7c7 | 9369 | break; |
1fe532cf AM |
9370 | |
9371 | case R_PPC_ADDR16: | |
9372 | case R_PPC_ADDR16_LO: | |
9373 | case R_PPC_GOT16: | |
9374 | case R_PPC_GOT16_LO: | |
9375 | case R_PPC_SDAREL16: | |
9376 | case R_PPC_SECTOFF: | |
9377 | case R_PPC_SECTOFF_LO: | |
9378 | case R_PPC_DTPREL16: | |
9379 | case R_PPC_DTPREL16_LO: | |
9380 | case R_PPC_TPREL16: | |
9381 | case R_PPC_TPREL16_LO: | |
9382 | case R_PPC_GOT_TLSGD16: | |
9383 | case R_PPC_GOT_TLSGD16_LO: | |
9384 | case R_PPC_GOT_TLSLD16: | |
9385 | case R_PPC_GOT_TLSLD16_LO: | |
9386 | case R_PPC_GOT_DTPREL16: | |
9387 | case R_PPC_GOT_DTPREL16_LO: | |
9388 | case R_PPC_GOT_TPREL16: | |
9389 | case R_PPC_GOT_TPREL16_LO: | |
9390 | { | |
9391 | /* The 32-bit ABI lacks proper relocations to deal with | |
9392 | certain 64-bit instructions. Prevent damage to bits | |
9393 | that make up part of the insn opcode. */ | |
9394 | unsigned int insn, mask, lobit; | |
9395 | ||
c316a17c AM |
9396 | insn = bfd_get_32 (output_bfd, |
9397 | contents + rel->r_offset - d_offset); | |
1fe532cf AM |
9398 | mask = 0; |
9399 | if (is_insn_ds_form (insn)) | |
9400 | mask = 3; | |
9401 | else if (is_insn_dq_form (insn)) | |
9402 | mask = 15; | |
9403 | else | |
9404 | break; | |
a680de9a PB |
9405 | relocation += addend; |
9406 | addend = insn & mask; | |
9407 | lobit = mask & relocation; | |
1fe532cf AM |
9408 | if (lobit != 0) |
9409 | { | |
a680de9a | 9410 | relocation ^= lobit; |
1fe532cf AM |
9411 | info->callbacks->einfo |
9412 | (_("%P: %H: error: %s against `%s' not a multiple of %u\n"), | |
9413 | input_bfd, input_section, rel->r_offset, | |
9414 | howto->name, sym_name, mask + 1); | |
9415 | bfd_set_error (bfd_error_bad_value); | |
9416 | ret = FALSE; | |
9417 | } | |
1fe532cf AM |
9418 | } |
9419 | break; | |
252b5132 RH |
9420 | } |
9421 | ||
252b5132 | 9422 | #ifdef DEBUG |
55fd94b0 AM |
9423 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
9424 | "offset = %ld, addend = %ld\n", | |
252b5132 | 9425 | howto->name, |
8da6118f | 9426 | (int) r_type, |
252b5132 RH |
9427 | sym_name, |
9428 | r_symndx, | |
7619e7c7 | 9429 | (long) rel->r_offset, |
8da6118f | 9430 | (long) addend); |
252b5132 RH |
9431 | #endif |
9432 | ||
7619e7c7 AM |
9433 | if (unresolved_reloc |
9434 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9435 | && h->def_dynamic) |
9436 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9437 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9438 | { |
25f53a85 | 9439 | info->callbacks->einfo |
8de848d8 | 9440 | (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9441 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9442 | howto->name, |
7619e7c7 AM |
9443 | sym_name); |
9444 | ret = FALSE; | |
9445 | } | |
9446 | ||
86c95733 AM |
9447 | /* 16-bit fields in insns mostly have signed values, but a |
9448 | few insns have 16-bit unsigned values. Really, we should | |
9449 | have different reloc types. */ | |
9450 | if (howto->complain_on_overflow != complain_overflow_dont | |
9451 | && howto->dst_mask == 0xffff | |
9452 | && (input_section->flags & SEC_CODE) != 0) | |
9453 | { | |
9454 | enum complain_overflow complain = complain_overflow_signed; | |
9455 | ||
9456 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9457 | { | |
9458 | unsigned int insn; | |
9459 | ||
9460 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9461 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9462 | complain = complain_overflow_bitfield; | |
9463 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9464 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9465 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9466 | complain = complain_overflow_unsigned; |
9467 | } | |
9468 | if (howto->complain_on_overflow != complain) | |
9469 | { | |
9470 | alt_howto = *howto; | |
9471 | alt_howto.complain_on_overflow = complain; | |
9472 | howto = &alt_howto; | |
9473 | } | |
9474 | } | |
9475 | ||
a680de9a PB |
9476 | if (r_type == R_PPC_REL16DX_HA) |
9477 | { | |
9478 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9479 | if (rel->r_offset + 4 > input_section->size) | |
9480 | r = bfd_reloc_outofrange; | |
9481 | else | |
9482 | { | |
9483 | unsigned int insn; | |
9484 | ||
9485 | relocation += addend; | |
9486 | relocation -= (rel->r_offset | |
9487 | + input_section->output_offset | |
9488 | + input_section->output_section->vma); | |
9489 | relocation >>= 16; | |
9490 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9491 | insn &= ~0x1fffc1; | |
9492 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9493 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9494 | r = bfd_reloc_ok; | |
9495 | } | |
9496 | } | |
9497 | else | |
9498 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9499 | rel->r_offset, relocation, addend); | |
252b5132 | 9500 | |
7619e7c7 | 9501 | if (r != bfd_reloc_ok) |
252b5132 | 9502 | { |
7619e7c7 | 9503 | if (r == bfd_reloc_overflow) |
252b5132 | 9504 | { |
c3301df1 | 9505 | overflow: |
8131c122 AM |
9506 | /* On code like "if (foo) foo();" don't report overflow |
9507 | on a branch to zero when foo is undefined. */ | |
9508 | if (!warned | |
9509 | && !(h != NULL | |
9510 | && (h->root.type == bfd_link_hash_undefweak | |
9511 | || h->root.type == bfd_link_hash_undefined) | |
9512 | && is_branch_reloc (r_type))) | |
dc1bc0c9 | 9513 | { |
8131c122 AM |
9514 | if (!((*info->callbacks->reloc_overflow) |
9515 | (info, (h ? &h->root : NULL), sym_name, | |
9516 | howto->name, rel->r_addend, | |
9517 | input_bfd, input_section, rel->r_offset))) | |
9518 | return FALSE; | |
dc1bc0c9 | 9519 | } |
dc1bc0c9 RH |
9520 | } |
9521 | else | |
9522 | { | |
25f53a85 | 9523 | info->callbacks->einfo |
8de848d8 | 9524 | (_("%P: %H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9525 | input_bfd, input_section, rel->r_offset, |
9526 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9527 | ret = FALSE; |
252b5132 RH |
9528 | } |
9529 | } | |
c316a17c AM |
9530 | copy_reloc: |
9531 | if (wrel != rel) | |
9532 | *wrel = *rel; | |
9533 | } | |
9534 | ||
9535 | if (wrel != rel) | |
9536 | { | |
9537 | Elf_Internal_Shdr *rel_hdr; | |
9538 | size_t deleted = rel - wrel; | |
9539 | ||
9540 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9541 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9542 | if (rel_hdr->sh_size == 0) | |
9543 | { | |
9544 | /* It is too late to remove an empty reloc section. Leave | |
9545 | one NONE reloc. | |
9546 | ??? What is wrong with an empty section??? */ | |
9547 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9548 | deleted -= 1; | |
9549 | wrel++; | |
9550 | } | |
9551 | relend = wrel; | |
9552 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9553 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9554 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9555 | } |
9556 | ||
252b5132 RH |
9557 | #ifdef DEBUG |
9558 | fprintf (stderr, "\n"); | |
9559 | #endif | |
9560 | ||
53291d1f AM |
9561 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9562 | && input_section->size != input_section->rawsize | |
9563 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9564 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9565 | { | |
9566 | /* Branch around the trampolines. */ | |
9567 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9568 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9569 | } | |
9570 | ||
5446cbdf | 9571 | if (htab->params->ppc476_workaround |
795bc6b3 | 9572 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9573 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9574 | || (input_section->output_section->alignment_power |
9575 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9576 | { |
5446cbdf | 9577 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9578 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9579 | |
5446cbdf | 9580 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9581 | { |
9582 | bfd_byte *p; | |
9583 | unsigned int n; | |
9584 | bfd_byte fill[4]; | |
9585 | ||
9586 | bfd_put_32 (input_bfd, BA, fill); | |
9587 | p = contents + input_section->size - relax_info->workaround_size; | |
9588 | n = relax_info->workaround_size >> 2; | |
9589 | while (n--) | |
9590 | { | |
9591 | memcpy (p, fill, 4); | |
9592 | p += 4; | |
9593 | } | |
9594 | } | |
5446cbdf AM |
9595 | |
9596 | /* The idea is: Replace the last instruction on a page with a | |
9597 | branch to a patch area. Put the insn there followed by a | |
9598 | branch back to the next page. Complicated a little by | |
9599 | needing to handle moved conditional branches, and by not | |
9600 | wanting to touch data-in-text. */ | |
9601 | ||
9602 | start_addr = (input_section->output_section->vma | |
9603 | + input_section->output_offset); | |
9604 | end_addr = (start_addr + input_section->size | |
9605 | - relax_info->workaround_size); | |
9606 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9607 | addr < end_addr; | |
9608 | addr += pagesize) | |
9609 | { | |
9610 | bfd_vma offset = addr - start_addr; | |
9611 | Elf_Internal_Rela *lo, *hi; | |
9612 | bfd_boolean is_data; | |
9613 | bfd_vma patch_off, patch_addr; | |
9614 | unsigned int insn; | |
9615 | ||
9616 | /* Do we have a data reloc at this offset? If so, leave | |
9617 | the word alone. */ | |
9618 | is_data = FALSE; | |
9619 | lo = relocs; | |
668e22e5 AM |
9620 | hi = relend; |
9621 | rel = NULL; | |
5446cbdf AM |
9622 | while (lo < hi) |
9623 | { | |
9624 | rel = lo + (hi - lo) / 2; | |
9625 | if (rel->r_offset < offset) | |
9626 | lo = rel + 1; | |
668e22e5 | 9627 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9628 | hi = rel; |
9629 | else | |
9630 | { | |
9631 | switch (ELF32_R_TYPE (rel->r_info)) | |
9632 | { | |
9633 | case R_PPC_ADDR32: | |
9634 | case R_PPC_UADDR32: | |
9635 | case R_PPC_REL32: | |
9636 | case R_PPC_ADDR30: | |
9637 | is_data = TRUE; | |
9638 | break; | |
9639 | default: | |
9640 | break; | |
9641 | } | |
9642 | break; | |
9643 | } | |
9644 | } | |
9645 | if (is_data) | |
9646 | continue; | |
9647 | ||
b4ab4364 AM |
9648 | /* Some instructions can be left alone too. Unconditional |
9649 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9650 | avoid the icache failure. | |
9651 | ||
9652 | The problem occurs due to prefetch across a page boundary | |
9653 | where stale instructions can be fetched from the next | |
9654 | page, and the mechanism for flushing these bad | |
9655 | instructions fails under certain circumstances. The | |
9656 | unconditional branches: | |
9657 | 1) Branch: b, bl, ba, bla, | |
9658 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9659 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9660 | where (2) and (3) have BO=0x14 making them unconditional, | |
9661 | prevent the bad prefetch because the prefetch itself is | |
9662 | affected by these instructions. This happens even if the | |
9663 | instruction is not executed. | |
9664 | ||
9665 | A bctr example: | |
9666 | . | |
9667 | . lis 9,new_page@ha | |
9668 | . addi 9,9,new_page@l | |
9669 | . mtctr 9 | |
9670 | . bctr | |
9671 | . nop | |
9672 | . nop | |
9673 | . new_page: | |
9674 | . | |
9675 | The bctr is not predicted taken due to ctr not being | |
9676 | ready, so prefetch continues on past the bctr into the | |
9677 | new page which might have stale instructions. If they | |
9678 | fail to be flushed, then they will be executed after the | |
9679 | bctr executes. Either of the following modifications | |
9680 | prevent the bad prefetch from happening in the first | |
9681 | place: | |
9682 | . | |
1b786873 L |
9683 | . lis 9,new_page@ha lis 9,new_page@ha |
9684 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9685 | . mtctr 9 mtctr 9 | |
9686 | . bctr bctr | |
b4ab4364 | 9687 | . nop b somewhere_else |
1b786873 L |
9688 | . b somewhere_else nop |
9689 | . new_page: new_page: | |
b4ab4364 | 9690 | . */ |
5446cbdf | 9691 | insn = bfd_get_32 (input_bfd, contents + offset); |
b4ab4364 AM |
9692 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9693 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9694 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9695 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 AM |
9696 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
9697 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ | |
5446cbdf AM |
9698 | continue; |
9699 | ||
9700 | patch_addr = (start_addr + input_section->size | |
9701 | - relax_info->workaround_size); | |
9702 | patch_addr = (patch_addr + 15) & -16; | |
9703 | patch_off = patch_addr - start_addr; | |
9704 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9705 | |
9706 | if (rel != NULL | |
9707 | && rel->r_offset >= offset | |
9708 | && rel->r_offset < offset + 4) | |
9709 | { | |
f8b44781 AM |
9710 | asection *sreloc; |
9711 | ||
668e22e5 AM |
9712 | /* If the insn we are patching had a reloc, adjust the |
9713 | reloc r_offset so that the reloc applies to the moved | |
9714 | location. This matters for -r and --emit-relocs. */ | |
9715 | if (rel + 1 != relend) | |
9716 | { | |
9717 | Elf_Internal_Rela tmp = *rel; | |
9718 | ||
9719 | /* Keep the relocs sorted by r_offset. */ | |
9720 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9721 | relend[-1] = tmp; | |
9722 | } | |
9723 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9724 | |
9725 | /* Adjust REL16 addends too. */ | |
9726 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9727 | { | |
9728 | case R_PPC_REL16: | |
9729 | case R_PPC_REL16_LO: | |
9730 | case R_PPC_REL16_HI: | |
9731 | case R_PPC_REL16_HA: | |
9732 | relend[-1].r_addend += patch_off - offset; | |
9733 | break; | |
9734 | default: | |
9735 | break; | |
9736 | } | |
9737 | ||
9738 | /* If we are building a PIE or shared library with | |
9739 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9740 | If so, the dynamic reloc must move with the insn. */ | |
9741 | sreloc = elf_section_data (input_section)->sreloc; | |
9742 | if (sreloc != NULL) | |
9743 | { | |
1d5c94cb | 9744 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9745 | bfd_vma soffset; |
9746 | ||
1d5c94cb AM |
9747 | slo = (Elf32_External_Rela *) sreloc->contents; |
9748 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9749 | soffset = (offset + input_section->output_section->vma |
9750 | + input_section->output_offset); | |
9751 | while (slo < shi) | |
9752 | { | |
1d5c94cb AM |
9753 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9754 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9755 | &outrel); | |
f8b44781 AM |
9756 | if (outrel.r_offset < soffset) |
9757 | slo = srel + 1; | |
9758 | else if (outrel.r_offset > soffset + 3) | |
9759 | shi = srel; | |
9760 | else | |
9761 | { | |
1d5c94cb | 9762 | if (srel + 1 != srelend) |
f8b44781 | 9763 | { |
1d5c94cb AM |
9764 | memmove (srel, srel + 1, |
9765 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9766 | srel = srelend - 1; | |
f8b44781 AM |
9767 | } |
9768 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9769 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9770 | (bfd_byte *) srel); | |
f8b44781 AM |
9771 | break; |
9772 | } | |
9773 | } | |
9774 | } | |
668e22e5 AM |
9775 | } |
9776 | else | |
9777 | rel = NULL; | |
9778 | ||
5446cbdf AM |
9779 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9780 | && (insn & 2) == 0 /* relative */) | |
9781 | { | |
9782 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9783 | ||
9784 | delta += offset - patch_off; | |
0e1862bb | 9785 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9786 | delta = 0; |
0e1862bb | 9787 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9788 | { |
9789 | enum elf_ppc_reloc_type r_type; | |
9790 | ||
9791 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9792 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9793 | insn |= BRANCH_PREDICT_BIT; | |
9794 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9795 | insn &= ~BRANCH_PREDICT_BIT; | |
9796 | else | |
9797 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9798 | ||
9799 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9800 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9801 | && delta + 0x8000 < 0x10000 | |
9802 | && (bfd_signed_vma) delta < 0) | |
9803 | insn ^= BRANCH_PREDICT_BIT; | |
9804 | } | |
5446cbdf AM |
9805 | if (delta + 0x8000 < 0x10000) |
9806 | { | |
9807 | bfd_put_32 (input_bfd, | |
9808 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9809 | contents + patch_off); | |
9810 | patch_off += 4; | |
9811 | bfd_put_32 (input_bfd, | |
9812 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9813 | contents + patch_off); | |
9814 | patch_off += 4; | |
9815 | } | |
9816 | else | |
9817 | { | |
668e22e5 AM |
9818 | if (rel != NULL) |
9819 | { | |
9820 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9821 | ||
9822 | relend[-1].r_offset += 8; | |
9823 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9824 | } | |
5446cbdf AM |
9825 | bfd_put_32 (input_bfd, |
9826 | (insn & ~0xfffc) | 8, | |
9827 | contents + patch_off); | |
9828 | patch_off += 4; | |
9829 | bfd_put_32 (input_bfd, | |
9830 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9831 | contents + patch_off); | |
9832 | patch_off += 4; | |
9833 | bfd_put_32 (input_bfd, | |
9834 | B | ((delta - 8) & 0x3fffffc), | |
9835 | contents + patch_off); | |
9836 | patch_off += 4; | |
9837 | } | |
9838 | } | |
9839 | else | |
9840 | { | |
9841 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9842 | patch_off += 4; | |
9843 | bfd_put_32 (input_bfd, | |
9844 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9845 | contents + patch_off); | |
9846 | patch_off += 4; | |
9847 | } | |
9848 | BFD_ASSERT (patch_off <= input_section->size); | |
9849 | relax_info->workaround_size = input_section->size - patch_off; | |
9850 | } | |
9851 | } | |
9852 | ||
252b5132 RH |
9853 | return ret; |
9854 | } | |
252b5132 | 9855 | \f |
25dbc73a AM |
9856 | /* Finish up dynamic symbol handling. We set the contents of various |
9857 | dynamic sections here. */ | |
c5fccbec | 9858 | |
b34976b6 | 9859 | static bfd_boolean |
25dbc73a AM |
9860 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
9861 | struct bfd_link_info *info, | |
9862 | struct elf_link_hash_entry *h, | |
9863 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 9864 | { |
25dbc73a | 9865 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
9866 | struct plt_entry *ent; |
9867 | bfd_boolean doneone; | |
e1a9cb8e | 9868 | |
25dbc73a AM |
9869 | #ifdef DEBUG |
9870 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9871 | h->root.root.string); | |
9872 | #endif | |
e1a9cb8e | 9873 | |
25dbc73a AM |
9874 | htab = ppc_elf_hash_table (info); |
9875 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 9876 | |
a6aa5195 AM |
9877 | doneone = FALSE; |
9878 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9879 | if (ent->plt.offset != (bfd_vma) -1) | |
9880 | { | |
9881 | if (!doneone) | |
9882 | { | |
9883 | Elf_Internal_Rela rela; | |
9884 | bfd_byte *loc; | |
9885 | bfd_vma reloc_index; | |
e1a9cb8e | 9886 | |
e054468f | 9887 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9888 | || !htab->elf.dynamic_sections_created |
9889 | || h->dynindx == -1) | |
9d8504b1 PB |
9890 | reloc_index = ent->plt.offset / 4; |
9891 | else | |
9892 | { | |
9893 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9894 | / htab->plt_slot_size); | |
9895 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9896 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9897 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9898 | } | |
9899 | ||
a6aa5195 AM |
9900 | /* This symbol has an entry in the procedure linkage table. |
9901 | Set it up. */ | |
e054468f | 9902 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9903 | && htab->elf.dynamic_sections_created |
9904 | && h->dynindx != -1) | |
a6aa5195 | 9905 | { |
9d8504b1 PB |
9906 | bfd_vma got_offset; |
9907 | const bfd_vma *plt_entry; | |
5b914448 | 9908 | |
9d8504b1 PB |
9909 | /* The first three entries in .got.plt are reserved. */ |
9910 | got_offset = (reloc_index + 3) * 4; | |
9911 | ||
9912 | /* Use the right PLT. */ | |
0e1862bb | 9913 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
9914 | : ppc_elf_vxworks_plt_entry; |
9915 | ||
9916 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 9917 | if (bfd_link_pic (info)) |
9d8504b1 | 9918 | { |
9d8504b1 | 9919 | bfd_put_32 (output_bfd, |
e87d4038 | 9920 | plt_entry[0] | PPC_HA (got_offset), |
9d8504b1 PB |
9921 | htab->plt->contents + ent->plt.offset + 0); |
9922 | bfd_put_32 (output_bfd, | |
e87d4038 | 9923 | plt_entry[1] | PPC_LO (got_offset), |
9d8504b1 PB |
9924 | htab->plt->contents + ent->plt.offset + 4); |
9925 | } | |
9926 | else | |
9927 | { | |
e87d4038 | 9928 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
9929 | |
9930 | bfd_put_32 (output_bfd, | |
e87d4038 | 9931 | plt_entry[0] | PPC_HA (got_loc), |
9d8504b1 PB |
9932 | htab->plt->contents + ent->plt.offset + 0); |
9933 | bfd_put_32 (output_bfd, | |
e87d4038 | 9934 | plt_entry[1] | PPC_LO (got_loc), |
9d8504b1 PB |
9935 | htab->plt->contents + ent->plt.offset + 4); |
9936 | } | |
9937 | ||
9938 | bfd_put_32 (output_bfd, plt_entry[2], | |
9939 | htab->plt->contents + ent->plt.offset + 8); | |
9940 | bfd_put_32 (output_bfd, plt_entry[3], | |
9941 | htab->plt->contents + ent->plt.offset + 12); | |
9942 | ||
9943 | /* This instruction is an immediate load. The value loaded is | |
9944 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
9945 | start of the .rela.plt section. The value is stored in the | |
9946 | low-order 16 bits of the load instruction. */ | |
9947 | /* NOTE: It appears that this is now an index rather than a | |
9948 | prescaled offset. */ | |
5b914448 | 9949 | bfd_put_32 (output_bfd, |
9d8504b1 PB |
9950 | plt_entry[4] | reloc_index, |
9951 | htab->plt->contents + ent->plt.offset + 16); | |
9952 | /* This instruction is a PC-relative branch whose target is | |
9953 | the start of the PLT section. The address of this branch | |
9954 | instruction is 20 bytes beyond the start of this PLT entry. | |
9955 | The address is encoded in bits 6-29, inclusive. The value | |
9956 | stored is right-shifted by two bits, permitting a 26-bit | |
9957 | offset. */ | |
5b914448 AM |
9958 | bfd_put_32 (output_bfd, |
9959 | (plt_entry[5] | |
9d8504b1 PB |
9960 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
9961 | htab->plt->contents + ent->plt.offset + 20); | |
9962 | bfd_put_32 (output_bfd, plt_entry[6], | |
9963 | htab->plt->contents + ent->plt.offset + 24); | |
9964 | bfd_put_32 (output_bfd, plt_entry[7], | |
9965 | htab->plt->contents + ent->plt.offset + 28); | |
9966 | ||
9967 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 9968 | the address immediately after the "bctr" instruction |
9d8504b1 PB |
9969 | in this PLT entry. */ |
9970 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
9971 | + htab->plt->output_offset | |
9972 | + ent->plt.offset + 16), | |
9973 | htab->sgotplt->contents + got_offset); | |
9974 | ||
0e1862bb | 9975 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
9976 | { |
9977 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
9978 | loc = htab->srelplt2->contents | |
9979 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
9980 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
9981 | * sizeof (Elf32_External_Rela)); | |
9982 | ||
9983 | /* Provide the @ha relocation for the first instruction. */ | |
9984 | rela.r_offset = (htab->plt->output_section->vma | |
9985 | + htab->plt->output_offset | |
9986 | + ent->plt.offset + 2); | |
636ce3f5 | 9987 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9988 | R_PPC_ADDR16_HA); |
9989 | rela.r_addend = got_offset; | |
9990 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9991 | loc += sizeof (Elf32_External_Rela); | |
9992 | ||
9993 | /* Provide the @l relocation for the second instruction. */ | |
9994 | rela.r_offset = (htab->plt->output_section->vma | |
9995 | + htab->plt->output_offset | |
9996 | + ent->plt.offset + 6); | |
636ce3f5 | 9997 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9998 | R_PPC_ADDR16_LO); |
9999 | rela.r_addend = got_offset; | |
10000 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10001 | loc += sizeof (Elf32_External_Rela); | |
10002 | ||
10003 | /* Provide a relocation for the GOT entry corresponding to this | |
10004 | PLT slot. Point it at the middle of the .plt entry. */ | |
10005 | rela.r_offset = (htab->sgotplt->output_section->vma | |
10006 | + htab->sgotplt->output_offset | |
10007 | + got_offset); | |
7325306f | 10008 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
10009 | R_PPC_ADDR32); |
10010 | rela.r_addend = ent->plt.offset + 16; | |
10011 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10012 | } | |
10013 | ||
10014 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
10015 | In particular, the offset for the relocation is not the | |
10016 | address of the PLT entry for this function, as specified | |
10017 | by the ABI. Instead, the offset is set to the address of | |
10018 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
10019 | rela.r_offset = (htab->sgotplt->output_section->vma | |
10020 | + htab->sgotplt->output_offset | |
10021 | + got_offset); | |
10022 | ||
a6aa5195 AM |
10023 | } |
10024 | else | |
10025 | { | |
e054468f | 10026 | asection *splt = htab->plt; |
25f23106 AM |
10027 | if (!htab->elf.dynamic_sections_created |
10028 | || h->dynindx == -1) | |
e054468f AM |
10029 | splt = htab->iplt; |
10030 | ||
10031 | rela.r_offset = (splt->output_section->vma | |
10032 | + splt->output_offset | |
9d8504b1 | 10033 | + ent->plt.offset); |
e054468f | 10034 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
10035 | || !htab->elf.dynamic_sections_created |
10036 | || h->dynindx == -1) | |
9d8504b1 PB |
10037 | { |
10038 | /* We don't need to fill in the .plt. The ppc dynamic | |
10039 | linker will fill it in. */ | |
10040 | } | |
10041 | else | |
10042 | { | |
10043 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
10044 | + htab->glink->output_section->vma | |
10045 | + htab->glink->output_offset); | |
10046 | bfd_put_32 (output_bfd, val, | |
e054468f | 10047 | splt->contents + ent->plt.offset); |
9d8504b1 | 10048 | } |
a6aa5195 | 10049 | } |
e1a9cb8e | 10050 | |
a6aa5195 | 10051 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 10052 | rela.r_addend = 0; |
e054468f AM |
10053 | if (!htab->elf.dynamic_sections_created |
10054 | || h->dynindx == -1) | |
10055 | { | |
10056 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
10057 | && h->def_regular | |
10058 | && (h->root.type == bfd_link_hash_defined | |
10059 | || h->root.type == bfd_link_hash_defweak)); | |
10060 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10061 | rela.r_addend = SYM_VAL (h); | |
10062 | } | |
10063 | else | |
10064 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 10065 | |
25f23106 AM |
10066 | if (!htab->elf.dynamic_sections_created |
10067 | || h->dynindx == -1) | |
10068 | loc = (htab->reliplt->contents | |
10069 | + (htab->reliplt->reloc_count++ | |
10070 | * sizeof (Elf32_External_Rela))); | |
e054468f | 10071 | else |
25f23106 AM |
10072 | loc = (htab->relplt->contents |
10073 | + reloc_index * sizeof (Elf32_External_Rela)); | |
a6aa5195 | 10074 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 10075 | |
a6aa5195 AM |
10076 | if (!h->def_regular) |
10077 | { | |
0eb4a168 AM |
10078 | /* Mark the symbol as undefined, rather than as |
10079 | defined in the .plt section. Leave the value if | |
10080 | there were any relocations where pointer equality | |
10081 | matters (this is a clue for the dynamic linker, to | |
10082 | make function pointer comparisons work between an | |
10083 | application and shared library), otherwise set it | |
10084 | to zero. */ | |
a6aa5195 | 10085 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 10086 | if (!h->pointer_equality_needed) |
a6aa5195 | 10087 | sym->st_value = 0; |
0eb4a168 AM |
10088 | else if (!h->ref_regular_nonweak) |
10089 | { | |
625af618 AM |
10090 | /* This breaks function pointer comparisons, but |
10091 | that is better than breaking tests for a NULL | |
0eb4a168 | 10092 | function pointer. */ |
0eb4a168 AM |
10093 | sym->st_value = 0; |
10094 | } | |
a6aa5195 | 10095 | } |
de972ffa | 10096 | else if (h->type == STT_GNU_IFUNC |
0e1862bb | 10097 | && !bfd_link_pic (info)) |
de972ffa AM |
10098 | { |
10099 | /* Set the value of ifunc symbols in a non-pie | |
10100 | executable to the glink entry. This is to avoid | |
10101 | text relocations. We can't do this for ifunc in | |
10102 | allocate_dynrelocs, as we do for normal dynamic | |
10103 | function symbols with plt entries, because we need | |
10104 | to keep the original value around for the ifunc | |
10105 | relocation. */ | |
10106 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
10107 | (output_bfd, htab->glink->output_section)); | |
5b914448 AM |
10108 | sym->st_value = (ent->glink_offset |
10109 | + htab->glink->output_offset | |
de972ffa AM |
10110 | + htab->glink->output_section->vma); |
10111 | } | |
a6aa5195 AM |
10112 | doneone = TRUE; |
10113 | } | |
e1a9cb8e | 10114 | |
e054468f | 10115 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10116 | || !htab->elf.dynamic_sections_created |
10117 | || h->dynindx == -1) | |
a6aa5195 | 10118 | { |
a7f2871e | 10119 | unsigned char *p; |
e054468f | 10120 | asection *splt = htab->plt; |
25f23106 AM |
10121 | if (!htab->elf.dynamic_sections_created |
10122 | || h->dynindx == -1) | |
e054468f | 10123 | splt = htab->iplt; |
e1a9cb8e | 10124 | |
a7f2871e AM |
10125 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
10126 | ||
5446cbdf | 10127 | if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
10128 | { |
10129 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
10130 | p += 4; | |
10131 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
10132 | p += 4; | |
10133 | bfd_put_32 (output_bfd, MR_0_3, p); | |
10134 | p += 4; | |
10135 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
10136 | p += 4; | |
10137 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
10138 | p += 4; | |
10139 | bfd_put_32 (output_bfd, BEQLR, p); | |
10140 | p += 4; | |
10141 | bfd_put_32 (output_bfd, MR_3_0, p); | |
10142 | p += 4; | |
10143 | bfd_put_32 (output_bfd, NOP, p); | |
10144 | p += 4; | |
10145 | } | |
10146 | ||
10147 | write_glink_stub (ent, splt, p, info); | |
e1a9cb8e | 10148 | |
0e1862bb | 10149 | if (!bfd_link_pic (info)) |
e054468f AM |
10150 | /* We only need one non-PIC glink stub. */ |
10151 | break; | |
a6aa5195 AM |
10152 | } |
10153 | else | |
10154 | break; | |
10155 | } | |
e1a9cb8e | 10156 | |
25dbc73a AM |
10157 | if (h->needs_copy) |
10158 | { | |
10159 | asection *s; | |
10160 | Elf_Internal_Rela rela; | |
10161 | bfd_byte *loc; | |
e1a9cb8e | 10162 | |
25dbc73a | 10163 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 10164 | |
25dbc73a AM |
10165 | #ifdef DEBUG |
10166 | fprintf (stderr, ", copy"); | |
10167 | #endif | |
e1a9cb8e | 10168 | |
25dbc73a | 10169 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 10170 | |
4dc4a9a5 | 10171 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
10172 | s = htab->relsbss; |
10173 | else | |
10174 | s = htab->relbss; | |
10175 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 10176 | |
e87d4038 | 10177 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
10178 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
10179 | rela.r_addend = 0; | |
10180 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
10181 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10182 | } | |
e1a9cb8e | 10183 | |
25dbc73a AM |
10184 | #ifdef DEBUG |
10185 | fprintf (stderr, "\n"); | |
10186 | #endif | |
e1a9cb8e | 10187 | |
25dbc73a AM |
10188 | return TRUE; |
10189 | } | |
10190 | \f | |
10191 | static enum elf_reloc_type_class | |
7e612e98 AM |
10192 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
10193 | const asection *rel_sec, | |
10194 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 10195 | { |
7e612e98 AM |
10196 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
10197 | ||
10198 | if (rel_sec == htab->reliplt) | |
10199 | return reloc_class_ifunc; | |
10200 | ||
25dbc73a AM |
10201 | switch (ELF32_R_TYPE (rela->r_info)) |
10202 | { | |
10203 | case R_PPC_RELATIVE: | |
10204 | return reloc_class_relative; | |
25dbc73a AM |
10205 | case R_PPC_JMP_SLOT: |
10206 | return reloc_class_plt; | |
10207 | case R_PPC_COPY: | |
10208 | return reloc_class_copy; | |
10209 | default: | |
10210 | return reloc_class_normal; | |
10211 | } | |
e1a9cb8e | 10212 | } |
25dbc73a AM |
10213 | \f |
10214 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 10215 | |
25dbc73a AM |
10216 | static bfd_boolean |
10217 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
10218 | struct bfd_link_info *info) | |
e1a9cb8e | 10219 | { |
25dbc73a | 10220 | asection *sdyn; |
9d8504b1 | 10221 | asection *splt; |
25dbc73a | 10222 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 10223 | bfd_vma got; |
e87d4038 AM |
10224 | bfd *dynobj; |
10225 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 10226 | |
25dbc73a AM |
10227 | #ifdef DEBUG |
10228 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
10229 | #endif | |
6b0817e5 | 10230 | |
25dbc73a | 10231 | htab = ppc_elf_hash_table (info); |
9d8504b1 | 10232 | dynobj = elf_hash_table (info)->dynobj; |
3d4d4302 | 10233 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
9d8504b1 | 10234 | if (htab->is_vxworks) |
3d4d4302 | 10235 | splt = bfd_get_linker_section (dynobj, ".plt"); |
9d8504b1 PB |
10236 | else |
10237 | splt = NULL; | |
e1a9cb8e | 10238 | |
1fe44d79 AM |
10239 | got = 0; |
10240 | if (htab->elf.hgot != NULL) | |
e87d4038 | 10241 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 10242 | |
25dbc73a | 10243 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 10244 | { |
25dbc73a | 10245 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 10246 | |
25dbc73a | 10247 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 10248 | |
25dbc73a AM |
10249 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
10250 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
10251 | for (; dyncon < dynconend; dyncon++) | |
10252 | { | |
10253 | Elf_Internal_Dyn dyn; | |
10254 | asection *s; | |
e1a9cb8e | 10255 | |
9d8504b1 | 10256 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 10257 | |
25dbc73a AM |
10258 | switch (dyn.d_tag) |
10259 | { | |
10260 | case DT_PLTGOT: | |
9d8504b1 PB |
10261 | if (htab->is_vxworks) |
10262 | s = htab->sgotplt; | |
10263 | else | |
10264 | s = htab->plt; | |
25dbc73a AM |
10265 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10266 | break; | |
86bbe32f | 10267 | |
25dbc73a AM |
10268 | case DT_PLTRELSZ: |
10269 | dyn.d_un.d_val = htab->relplt->size; | |
10270 | break; | |
e1a9cb8e | 10271 | |
25dbc73a AM |
10272 | case DT_JMPREL: |
10273 | s = htab->relplt; | |
10274 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10275 | break; | |
2f89ff8d | 10276 | |
1fe44d79 AM |
10277 | case DT_PPC_GOT: |
10278 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
10279 | break; |
10280 | ||
9d8504b1 PB |
10281 | case DT_RELASZ: |
10282 | if (htab->is_vxworks) | |
10283 | { | |
10284 | if (htab->relplt) | |
10285 | dyn.d_un.d_ptr -= htab->relplt->size; | |
10286 | break; | |
10287 | } | |
10288 | continue; | |
10289 | ||
25dbc73a | 10290 | default: |
7a2b07ff NS |
10291 | if (htab->is_vxworks |
10292 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10293 | break; | |
25dbc73a AM |
10294 | continue; |
10295 | } | |
4c45e5c9 | 10296 | |
25dbc73a AM |
10297 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
10298 | } | |
10299 | } | |
4c45e5c9 | 10300 | |
3b36f7e6 | 10301 | if (htab->got != NULL) |
25dbc73a | 10302 | { |
e79f5955 AM |
10303 | if (htab->elf.hgot->root.u.def.section == htab->got |
10304 | || htab->elf.hgot->root.u.def.section == htab->sgotplt) | |
e87d4038 | 10305 | { |
e79f5955 | 10306 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 10307 | |
e87d4038 AM |
10308 | p += htab->elf.hgot->root.u.def.value; |
10309 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
10310 | { |
10311 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
10312 | so that a function can easily find the address of | |
10313 | _GLOBAL_OFFSET_TABLE_. */ | |
10314 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
10315 | < htab->elf.hgot->root.u.def.section->size); | |
10316 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
10317 | } | |
3b36f7e6 | 10318 | |
e87d4038 | 10319 | if (sdyn != NULL) |
e79f5955 AM |
10320 | { |
10321 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10322 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10323 | < htab->elf.hgot->root.u.def.section->size); | |
10324 | bfd_put_32 (output_bfd, val, p); | |
10325 | } | |
e87d4038 AM |
10326 | } |
10327 | else | |
10328 | { | |
8de848d8 | 10329 | info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"), |
25f53a85 AM |
10330 | htab->elf.hgot->root.root.string, |
10331 | (htab->sgotplt != NULL | |
10332 | ? htab->sgotplt->name : htab->got->name)); | |
e87d4038 AM |
10333 | bfd_set_error (bfd_error_bad_value); |
10334 | ret = FALSE; | |
10335 | } | |
25dbc73a AM |
10336 | |
10337 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
10338 | } | |
10339 | ||
9d8504b1 PB |
10340 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
10341 | if (splt && splt->size > 0) | |
10342 | { | |
10343 | /* Use the right PLT. */ | |
0e1862bb | 10344 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10345 | ? ppc_elf_vxworks_pic_plt0_entry |
10346 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10347 | |
0e1862bb | 10348 | if (!bfd_link_pic (info)) |
9d8504b1 | 10349 | { |
e87d4038 | 10350 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10351 | |
e87d4038 | 10352 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10353 | splt->contents + 0); |
e87d4038 | 10354 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10355 | splt->contents + 4); |
10356 | } | |
10357 | else | |
10358 | { | |
10359 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10360 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10361 | } | |
10362 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10363 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10364 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10365 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10366 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10367 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10368 | ||
0e1862bb | 10369 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10370 | { |
10371 | Elf_Internal_Rela rela; | |
10372 | bfd_byte *loc; | |
10373 | ||
10374 | loc = htab->srelplt2->contents; | |
10375 | ||
10376 | /* Output the @ha relocation for the first instruction. */ | |
10377 | rela.r_offset = (htab->plt->output_section->vma | |
10378 | + htab->plt->output_offset | |
10379 | + 2); | |
636ce3f5 | 10380 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10381 | rela.r_addend = 0; |
10382 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10383 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10384 | |
9d8504b1 PB |
10385 | /* Output the @l relocation for the second instruction. */ |
10386 | rela.r_offset = (htab->plt->output_section->vma | |
10387 | + htab->plt->output_offset | |
10388 | + 6); | |
636ce3f5 | 10389 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10390 | rela.r_addend = 0; |
10391 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10392 | loc += sizeof (Elf32_External_Rela); | |
10393 | ||
10394 | /* Fix up the remaining relocations. They may have the wrong | |
10395 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10396 | in which symbols were output. */ | |
10397 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10398 | { | |
10399 | Elf_Internal_Rela rel; | |
10400 | ||
10401 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10402 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10403 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10404 | loc += sizeof (Elf32_External_Rela); | |
10405 | ||
10406 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10407 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10408 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10409 | loc += sizeof (Elf32_External_Rela); | |
10410 | ||
10411 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10412 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10413 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10414 | loc += sizeof (Elf32_External_Rela); | |
10415 | } | |
10416 | } | |
10417 | } | |
10418 | ||
e054468f AM |
10419 | if (htab->glink != NULL |
10420 | && htab->glink->contents != NULL | |
10421 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10422 | { |
10423 | unsigned char *p; | |
10424 | unsigned char *endp; | |
a6aa5195 | 10425 | bfd_vma res0; |
d7128ce4 | 10426 | unsigned int i; |
a6aa5195 AM |
10427 | |
10428 | /* | |
10429 | * PIC glink code is the following: | |
10430 | * | |
10431 | * # ith PLT code stub. | |
10432 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10433 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10434 | * mtctr 11 | |
10435 | * bctr | |
10436 | * | |
10437 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10438 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10439 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10440 | * res_0: b PLTresolve | |
10441 | * res_1: b PLTresolve | |
10442 | * . | |
10443 | * # Some number of entries towards the end can be nops | |
10444 | * res_n_m3: nop | |
10445 | * res_n_m2: nop | |
10446 | * res_n_m1: | |
10447 | * | |
10448 | * PLTresolve: | |
10449 | * addis 11,11,(1f-res_0)@ha | |
10450 | * mflr 0 | |
10451 | * bcl 20,31,1f | |
10452 | * 1: addi 11,11,(1b-res_0)@l | |
10453 | * mflr 12 | |
10454 | * mtlr 0 | |
10455 | * sub 11,11,12 # r11 = index * 4 | |
10456 | * addis 12,12,(got+4-1b)@ha | |
10457 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
10458 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
10459 | * mtctr 0 | |
10460 | * add 0,11,11 | |
10461 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
10462 | * bctr | |
10463 | */ | |
10464 | static const unsigned int pic_plt_resolve[] = | |
10465 | { | |
10466 | ADDIS_11_11, | |
10467 | MFLR_0, | |
10468 | BCL_20_31, | |
10469 | ADDI_11_11, | |
10470 | MFLR_12, | |
10471 | MTLR_0, | |
10472 | SUB_11_11_12, | |
10473 | ADDIS_12_12, | |
10474 | LWZ_0_12, | |
10475 | LWZ_12_12, | |
10476 | MTCTR_0, | |
10477 | ADD_0_11_11, | |
10478 | ADD_11_0_11, | |
10479 | BCTR, | |
10480 | NOP, | |
10481 | NOP | |
10482 | }; | |
10483 | ||
176a0d42 AM |
10484 | /* |
10485 | * Non-PIC glink code is a little simpler. | |
10486 | * | |
10487 | * # ith PLT code stub. | |
10488 | * lis 11,(plt+(i-1)*4)@ha | |
10489 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10490 | * mtctr 11 | |
10491 | * bctr | |
10492 | * | |
10493 | * The branch table is the same, then comes | |
10494 | * | |
10495 | * PLTresolve: | |
10496 | * lis 12,(got+4)@ha | |
10497 | * addis 11,11,(-res_0)@ha | |
10498 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve | |
10499 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
10500 | * mtctr 0 | |
10501 | * add 0,11,11 | |
10502 | * lwz 12,(got+8)@l(12) # got[2] contains the map address | |
10503 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
10504 | * bctr | |
10505 | */ | |
d7128ce4 AM |
10506 | static const unsigned int plt_resolve[] = |
10507 | { | |
a6aa5195 AM |
10508 | LIS_12, |
10509 | ADDIS_11_11, | |
10510 | LWZ_0_12, | |
10511 | ADDI_11_11, | |
d7128ce4 | 10512 | MTCTR_0, |
7e8aeb9a | 10513 | ADD_0_11_11, |
a6aa5195 | 10514 | LWZ_12_12, |
7e8aeb9a | 10515 | ADD_11_0_11, |
d7128ce4 AM |
10516 | BCTR, |
10517 | NOP, | |
10518 | NOP, | |
a6aa5195 AM |
10519 | NOP, |
10520 | NOP, | |
10521 | NOP, | |
10522 | NOP, | |
d7128ce4 AM |
10523 | NOP |
10524 | }; | |
10525 | ||
a6aa5195 AM |
10526 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
10527 | abort (); | |
10528 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
10529 | abort (); |
10530 | ||
a6aa5195 | 10531 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10532 | and perhaps some padding. */ |
a6aa5195 AM |
10533 | p = htab->glink->contents; |
10534 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10535 | endp = htab->glink->contents; |
10536 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10537 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10538 | { |
10539 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10540 | p += 4; | |
10541 | } | |
10542 | while (p < endp) | |
10543 | { | |
10544 | bfd_put_32 (output_bfd, NOP, p); | |
10545 | p += 4; | |
10546 | } | |
10547 | ||
7e8aeb9a | 10548 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10549 | + htab->glink->output_section->vma |
10550 | + htab->glink->output_offset); | |
10551 | ||
da3a2088 AM |
10552 | if (htab->params->ppc476_workaround) |
10553 | { | |
10554 | /* Ensure that a call stub at the end of a page doesn't | |
10555 | result in prefetch over the end of the page into the | |
10556 | glink branch table. */ | |
10557 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10558 | bfd_vma page_addr; | |
10559 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10560 | + htab->glink->output_offset); | |
10561 | ||
10562 | for (page_addr = res0 & -pagesize; | |
10563 | page_addr > glink_start; | |
10564 | page_addr -= pagesize) | |
10565 | { | |
10566 | /* We have a plt call stub that may need fixing. */ | |
10567 | bfd_byte *loc; | |
10568 | unsigned int insn; | |
10569 | ||
10570 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10571 | insn = bfd_get_32 (output_bfd, loc); | |
10572 | if (insn == BCTR) | |
10573 | { | |
10574 | /* By alignment, we know that there must be at least | |
10575 | one other call stub before this one. */ | |
10576 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10577 | if (insn == BCTR) | |
10578 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10579 | else | |
10580 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10581 | } | |
10582 | } | |
10583 | } | |
10584 | ||
86b9da88 | 10585 | /* Last comes the PLTresolve stub. */ |
0e1862bb | 10586 | if (bfd_link_pic (info)) |
7e8aeb9a | 10587 | { |
a6aa5195 | 10588 | bfd_vma bcl; |
d7128ce4 | 10589 | |
a6aa5195 | 10590 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 10591 | { |
da3a2088 AM |
10592 | unsigned int insn = pic_plt_resolve[i]; |
10593 | ||
10594 | if (htab->params->ppc476_workaround && insn == NOP) | |
10595 | insn = BA + 0; | |
10596 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10597 | p += 4; |
10598 | } | |
a6aa5195 AM |
10599 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
10600 | ||
10601 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
10602 | + htab->glink->output_section->vma | |
10603 | + htab->glink->output_offset); | |
10604 | ||
10605 | bfd_put_32 (output_bfd, | |
10606 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
10607 | bfd_put_32 (output_bfd, | |
10608 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
10609 | bfd_put_32 (output_bfd, | |
10610 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
10611 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
10612 | { | |
10613 | bfd_put_32 (output_bfd, | |
10614 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10615 | bfd_put_32 (output_bfd, | |
10616 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
10617 | } | |
10618 | else | |
10619 | { | |
10620 | bfd_put_32 (output_bfd, | |
10621 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10622 | bfd_put_32 (output_bfd, | |
10623 | LWZ_12_12 + 4, p + 9*4); | |
10624 | } | |
7e8aeb9a AM |
10625 | } |
10626 | else | |
d7128ce4 | 10627 | { |
a6aa5195 | 10628 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a | 10629 | { |
da3a2088 AM |
10630 | unsigned int insn = plt_resolve[i]; |
10631 | ||
10632 | if (htab->params->ppc476_workaround && insn == NOP) | |
10633 | insn = BA + 0; | |
10634 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10635 | p += 4; |
10636 | } | |
a6aa5195 AM |
10637 | p -= 4 * ARRAY_SIZE (plt_resolve); |
10638 | ||
10639 | bfd_put_32 (output_bfd, | |
10640 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
10641 | bfd_put_32 (output_bfd, | |
10642 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
10643 | bfd_put_32 (output_bfd, | |
10644 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
10645 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10646 | { | |
10647 | bfd_put_32 (output_bfd, | |
10648 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
10649 | bfd_put_32 (output_bfd, | |
10650 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
10651 | } | |
10652 | else | |
10653 | { | |
10654 | bfd_put_32 (output_bfd, | |
10655 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
10656 | bfd_put_32 (output_bfd, | |
10657 | LWZ_12_12 + 4, p + 6*4); | |
10658 | } | |
d7128ce4 | 10659 | } |
d7128ce4 AM |
10660 | } |
10661 | ||
6177242a AM |
10662 | if (htab->glink_eh_frame != NULL |
10663 | && htab->glink_eh_frame->contents != NULL) | |
10664 | { | |
10665 | unsigned char *p = htab->glink_eh_frame->contents; | |
10666 | bfd_vma val; | |
10667 | ||
6177242a AM |
10668 | p += sizeof (glink_eh_frame_cie); |
10669 | /* FDE length. */ | |
6177242a AM |
10670 | p += 4; |
10671 | /* CIE pointer. */ | |
6177242a AM |
10672 | p += 4; |
10673 | /* Offset to .glink. */ | |
10674 | val = (htab->glink->output_section->vma | |
10675 | + htab->glink->output_offset); | |
10676 | val -= (htab->glink_eh_frame->output_section->vma | |
10677 | + htab->glink_eh_frame->output_offset); | |
10678 | val -= p - htab->glink_eh_frame->contents; | |
10679 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10680 | |
dbaa2011 | 10681 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10682 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10683 | htab->glink_eh_frame, | |
10684 | htab->glink_eh_frame->contents)) | |
10685 | return FALSE; | |
10686 | } | |
10687 | ||
e87d4038 | 10688 | return ret; |
25dbc73a | 10689 | } |
e1a9cb8e | 10690 | \f |
6d00b590 | 10691 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10692 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10693 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10694 | #define TARGET_BIG_NAME "elf32-powerpc" |
10695 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10696 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 | 10697 | #define ELF_MACHINE_CODE EM_PPC |
d0facd1b NC |
10698 | #ifdef __QNXTARGET__ |
10699 | #define ELF_MAXPAGESIZE 0x1000 | |
04c6a44c | 10700 | #define ELF_COMMONPAGESIZE 0x1000 |
d0facd1b | 10701 | #else |
252b5132 | 10702 | #define ELF_MAXPAGESIZE 0x10000 |
04c6a44c | 10703 | #define ELF_COMMONPAGESIZE 0x10000 |
d0facd1b | 10704 | #endif |
b1342370 | 10705 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
10706 | #define elf_info_to_howto ppc_elf_info_to_howto |
10707 | ||
10708 | #ifdef EM_CYGNUS_POWERPC | |
10709 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10710 | #endif | |
10711 | ||
10712 | #ifdef EM_PPC_OLD | |
10713 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10714 | #endif | |
10715 | ||
10716 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 10717 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10718 | #define elf_backend_can_refcount 1 |
b491616a | 10719 | #define elf_backend_rela_normal 1 |
53291d1f | 10720 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10721 | |
43c40ab2 | 10722 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10723 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10724 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10725 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10726 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10727 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10728 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10729 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10730 | |
feee612b | 10731 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
10732 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
10733 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
10734 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
10735 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10736 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10737 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 10738 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10739 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10740 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10741 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10742 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10743 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10744 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10745 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10746 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
b9c361e0 | 10747 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10748 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10749 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10750 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10751 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10752 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10753 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10754 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10755 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10756 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10757 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10758 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10759 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
b9c361e0 | 10760 | #define elf_backend_section_processing ppc_elf_section_processing |
252b5132 RH |
10761 | |
10762 | #include "elf32-target.h" | |
9d8504b1 | 10763 | |
7b8e7dad AM |
10764 | /* FreeBSD Target */ |
10765 | ||
10766 | #undef TARGET_LITTLE_SYM | |
10767 | #undef TARGET_LITTLE_NAME | |
10768 | ||
10769 | #undef TARGET_BIG_SYM | |
6d00b590 | 10770 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
10771 | #undef TARGET_BIG_NAME |
10772 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10773 | ||
10774 | #undef ELF_OSABI | |
10775 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10776 | ||
10777 | #undef elf32_bed | |
10778 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10779 | ||
10780 | #include "elf32-target.h" | |
10781 | ||
9d8504b1 PB |
10782 | /* VxWorks Target */ |
10783 | ||
10784 | #undef TARGET_LITTLE_SYM | |
10785 | #undef TARGET_LITTLE_NAME | |
10786 | ||
10787 | #undef TARGET_BIG_SYM | |
6d00b590 | 10788 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10789 | #undef TARGET_BIG_NAME |
10790 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10791 | ||
7b8e7dad AM |
10792 | #undef ELF_OSABI |
10793 | ||
d5e3d971 PB |
10794 | /* VxWorks uses the elf default section flags for .plt. */ |
10795 | static const struct bfd_elf_special_section * | |
10796 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 10797 | { |
d5e3d971 PB |
10798 | if (sec->name == NULL) |
10799 | return NULL; | |
10800 | ||
10801 | if (strcmp (sec->name, ".plt") == 0) | |
10802 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10803 | ||
10804 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10805 | } | |
9d8504b1 PB |
10806 | |
10807 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10808 | appropriately for VxWorks. */ | |
10809 | static struct bfd_link_hash_table * | |
10810 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10811 | { | |
10812 | struct bfd_link_hash_table *ret; | |
10813 | ||
10814 | ret = ppc_elf_link_hash_table_create (abfd); | |
10815 | if (ret) | |
10816 | { | |
10817 | struct ppc_elf_link_hash_table *htab | |
10818 | = (struct ppc_elf_link_hash_table *)ret; | |
10819 | htab->is_vxworks = 1; | |
4a3dc543 | 10820 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10821 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10822 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10823 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10824 | } | |
10825 | return ret; | |
10826 | } | |
10827 | ||
10828 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10829 | static bfd_boolean | |
10830 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10831 | struct bfd_link_info *info, | |
10832 | Elf_Internal_Sym *sym, | |
10833 | const char **namep ATTRIBUTE_UNUSED, | |
10834 | flagword *flagsp ATTRIBUTE_UNUSED, | |
10835 | asection **secp, | |
10836 | bfd_vma *valp) | |
10837 | { | |
10838 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
10839 | valp)) | |
10840 | return FALSE; | |
10841 | ||
10842 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
10843 | } | |
10844 | ||
9d8504b1 PB |
10845 | static void |
10846 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10847 | { | |
10848 | ppc_elf_final_write_processing(abfd, linker); | |
10849 | elf_vxworks_final_write_processing(abfd, linker); | |
10850 | } | |
10851 | ||
10852 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10853 | define it. */ | |
10854 | #undef elf_backend_want_plt_sym | |
10855 | #define elf_backend_want_plt_sym 1 | |
10856 | #undef elf_backend_want_got_plt | |
10857 | #define elf_backend_want_got_plt 1 | |
10858 | #undef elf_backend_got_symbol_offset | |
10859 | #define elf_backend_got_symbol_offset 0 | |
10860 | #undef elf_backend_plt_not_loaded | |
10861 | #define elf_backend_plt_not_loaded 0 | |
10862 | #undef elf_backend_plt_readonly | |
10863 | #define elf_backend_plt_readonly 1 | |
10864 | #undef elf_backend_got_header_size | |
10865 | #define elf_backend_got_header_size 12 | |
10866 | ||
468392fb AM |
10867 | #undef bfd_elf32_get_synthetic_symtab |
10868 | ||
9d8504b1 PB |
10869 | #undef bfd_elf32_bfd_link_hash_table_create |
10870 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10871 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10872 | #undef elf_backend_add_symbol_hook |
10873 | #define elf_backend_add_symbol_hook \ | |
10874 | ppc_elf_vxworks_add_symbol_hook | |
10875 | #undef elf_backend_link_output_symbol_hook | |
10876 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10877 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10878 | #undef elf_backend_final_write_processing |
10879 | #define elf_backend_final_write_processing \ | |
10880 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10881 | #undef elf_backend_get_sec_type_attr |
10882 | #define elf_backend_get_sec_type_attr \ | |
10883 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10884 | #undef elf_backend_emit_relocs |
10885 | #define elf_backend_emit_relocs \ | |
10886 | elf_vxworks_emit_relocs | |
10887 | ||
10888 | #undef elf32_bed | |
10889 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10890 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10891 | |
10892 | #include "elf32-target.h" |