Commit | Line | Data |
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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
051d5130 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
264a1fe0 | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ae9a127f | 18 | You should have received a copy of the GNU General Public License |
fc0bffd6 | 19 | along with this program; if not, write to the |
3e110533 | 20 | Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
53e09e0a | 21 | Boston, MA 02110-1301, USA. */ |
252b5132 RH |
22 | |
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 | ||
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
33 | #include "elf/ppc.h" | |
7619e7c7 | 34 | #include "elf32-ppc.h" |
9d8504b1 | 35 | #include "elf-vxworks.h" |
252b5132 | 36 | |
f0fe0e16 | 37 | /* RELA relocations are used here. */ |
252b5132 | 38 | |
252b5132 | 39 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 41 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 43 | |
70bccea4 AM |
44 | /* Branch prediction bit for branch taken relocs. */ |
45 | #define BRANCH_PREDICT_BIT 0x200000 | |
46 | /* Mask to set RA in memory instructions. */ | |
47 | #define RA_REGISTER_MASK 0x001f0000 | |
48 | /* Value to shift register by to insert RA. */ | |
49 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
50 | |
51 | /* The name of the dynamic interpreter. This is put in the .interp | |
52 | section. */ | |
252b5132 RH |
53 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
54 | ||
d7128ce4 | 55 | /* For old-style PLT. */ |
252b5132 RH |
56 | /* The number of single-slot PLT entries (the rest use two slots). */ |
57 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
58 | ||
d7128ce4 | 59 | /* For new-style .glink and .plt. */ |
a6aa5195 | 60 | #define GLINK_PLTRESOLVE 16*4 |
d7128ce4 AM |
61 | #define GLINK_ENTRY_SIZE 4*4 |
62 | ||
9d8504b1 PB |
63 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
64 | ||
65 | /* The standard VxWorks PLT entry. */ | |
66 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
67 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
68 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
69 | { | |
70 | 0x3d800000, /* lis r12,0 */ | |
71 | 0x818c0000, /* lwz r12,0(r12) */ | |
72 | 0x7d8903a6, /* mtctr r12 */ | |
73 | 0x4e800420, /* bctr */ | |
74 | 0x39600000, /* li r11,0 */ | |
75 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
76 | 0x60000000, /* nop */ | |
77 | 0x60000000, /* nop */ | |
78 | }; | |
79 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
80 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
81 | { | |
82 | 0x3d9e0000, /* addis r12,r30,0 */ | |
83 | 0x818c0000, /* lwz r12,0(r12) */ | |
84 | 0x7d8903a6, /* mtctr r12 */ | |
85 | 0x4e800420, /* bctr */ | |
86 | 0x39600000, /* li r11,0 */ | |
87 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
88 | 0x60000000, /* nop */ | |
89 | 0x60000000, /* nop */ | |
90 | }; | |
91 | ||
92 | /* The initial VxWorks PLT entry. */ | |
93 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
94 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
95 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
96 | { | |
97 | 0x3d800000, /* lis r12,0 */ | |
98 | 0x398c0000, /* addi r12,r12,0 */ | |
99 | 0x800c0008, /* lwz r0,8(r12) */ | |
100 | 0x7c0903a6, /* mtctr r0 */ | |
101 | 0x818c0004, /* lwz r12,4(r12) */ | |
102 | 0x4e800420, /* bctr */ | |
103 | 0x60000000, /* nop */ | |
104 | 0x60000000, /* nop */ | |
105 | }; | |
106 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
107 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
108 | { | |
109 | 0x819e0008, /* lwz r12,8(r30) */ | |
110 | 0x7d8903a6, /* mtctr r12 */ | |
111 | 0x819e0004, /* lwz r12,4(r30) */ | |
112 | 0x4e800420, /* bctr */ | |
113 | 0x60000000, /* nop */ | |
114 | 0x60000000, /* nop */ | |
115 | 0x60000000, /* nop */ | |
116 | 0x60000000, /* nop */ | |
117 | }; | |
118 | ||
119 | /* For executables, we have some additional relocations in | |
120 | .rela.plt.unloaded, for the kernel loader. */ | |
121 | ||
122 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
123 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
124 | /* The number of relocations in the PLTResolve slot. */ | |
125 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
126 | /* The number of relocations in the PLTResolve slot when when creating | |
127 | a shared library. */ | |
128 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
129 | ||
d7128ce4 | 130 | /* Some instructions. */ |
d7128ce4 | 131 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
132 | #define ADDIS_11_30 0x3d7e0000 |
133 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 134 | #define ADDI_11_11 0x396b0000 |
d7128ce4 AM |
135 | #define ADD_0_11_11 0x7c0b5a14 |
136 | #define ADD_11_0_11 0x7d605a14 | |
a6aa5195 AM |
137 | #define B 0x48000000 |
138 | #define BCL_20_31 0x429f0005 | |
d7128ce4 | 139 | #define BCTR 0x4e800420 |
7e8aeb9a AM |
140 | #define LIS_11 0x3d600000 |
141 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
142 | #define LWZU_0_12 0x840c0000 |
143 | #define LWZ_0_12 0x800c0000 | |
144 | #define LWZ_11_11 0x816b0000 | |
145 | #define LWZ_11_30 0x817e0000 | |
146 | #define LWZ_12_12 0x818c0000 | |
147 | #define MFLR_0 0x7c0802a6 | |
148 | #define MFLR_12 0x7d8802a6 | |
149 | #define MTCTR_0 0x7c0903a6 | |
150 | #define MTCTR_11 0x7d6903a6 | |
151 | #define MTLR_0 0x7c0803a6 | |
152 | #define NOP 0x60000000 | |
153 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
154 | |
155 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
156 | #define TP_OFFSET 0x7000 | |
157 | #define DTP_OFFSET 0x8000 | |
7fce784e | 158 | \f |
e47cd125 | 159 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 160 | |
8da6118f | 161 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
162 | /* This reloc does nothing. */ |
163 | HOWTO (R_PPC_NONE, /* type */ | |
164 | 0, /* rightshift */ | |
165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
166 | 32, /* bitsize */ | |
b34976b6 | 167 | FALSE, /* pc_relative */ |
252b5132 RH |
168 | 0, /* bitpos */ |
169 | complain_overflow_bitfield, /* complain_on_overflow */ | |
170 | bfd_elf_generic_reloc, /* special_function */ | |
171 | "R_PPC_NONE", /* name */ | |
b34976b6 | 172 | FALSE, /* partial_inplace */ |
252b5132 RH |
173 | 0, /* src_mask */ |
174 | 0, /* dst_mask */ | |
b34976b6 | 175 | FALSE), /* pcrel_offset */ |
252b5132 RH |
176 | |
177 | /* A standard 32 bit relocation. */ | |
178 | HOWTO (R_PPC_ADDR32, /* type */ | |
179 | 0, /* rightshift */ | |
180 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
181 | 32, /* bitsize */ | |
b34976b6 | 182 | FALSE, /* pc_relative */ |
252b5132 RH |
183 | 0, /* bitpos */ |
184 | complain_overflow_bitfield, /* complain_on_overflow */ | |
185 | bfd_elf_generic_reloc, /* special_function */ | |
186 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 187 | FALSE, /* partial_inplace */ |
252b5132 RH |
188 | 0, /* src_mask */ |
189 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 190 | FALSE), /* pcrel_offset */ |
252b5132 RH |
191 | |
192 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
193 | FIXME: we don't check that, we just clear them. */ | |
194 | HOWTO (R_PPC_ADDR24, /* type */ | |
195 | 0, /* rightshift */ | |
196 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
197 | 26, /* bitsize */ | |
b34976b6 | 198 | FALSE, /* pc_relative */ |
252b5132 RH |
199 | 0, /* bitpos */ |
200 | complain_overflow_bitfield, /* complain_on_overflow */ | |
201 | bfd_elf_generic_reloc, /* special_function */ | |
202 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 203 | FALSE, /* partial_inplace */ |
252b5132 RH |
204 | 0, /* src_mask */ |
205 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 206 | FALSE), /* pcrel_offset */ |
252b5132 RH |
207 | |
208 | /* A standard 16 bit relocation. */ | |
209 | HOWTO (R_PPC_ADDR16, /* type */ | |
210 | 0, /* rightshift */ | |
211 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
212 | 16, /* bitsize */ | |
b34976b6 | 213 | FALSE, /* pc_relative */ |
252b5132 RH |
214 | 0, /* bitpos */ |
215 | complain_overflow_bitfield, /* complain_on_overflow */ | |
216 | bfd_elf_generic_reloc, /* special_function */ | |
217 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 218 | FALSE, /* partial_inplace */ |
252b5132 RH |
219 | 0, /* src_mask */ |
220 | 0xffff, /* dst_mask */ | |
b34976b6 | 221 | FALSE), /* pcrel_offset */ |
252b5132 RH |
222 | |
223 | /* A 16 bit relocation without overflow. */ | |
224 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
225 | 0, /* rightshift */ | |
226 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
227 | 16, /* bitsize */ | |
b34976b6 | 228 | FALSE, /* pc_relative */ |
252b5132 RH |
229 | 0, /* bitpos */ |
230 | complain_overflow_dont,/* complain_on_overflow */ | |
231 | bfd_elf_generic_reloc, /* special_function */ | |
232 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 233 | FALSE, /* partial_inplace */ |
252b5132 RH |
234 | 0, /* src_mask */ |
235 | 0xffff, /* dst_mask */ | |
b34976b6 | 236 | FALSE), /* pcrel_offset */ |
252b5132 RH |
237 | |
238 | /* The high order 16 bits of an address. */ | |
239 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
240 | 16, /* rightshift */ | |
241 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 16, /* bitsize */ | |
b34976b6 | 243 | FALSE, /* pc_relative */ |
252b5132 RH |
244 | 0, /* bitpos */ |
245 | complain_overflow_dont, /* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 248 | FALSE, /* partial_inplace */ |
252b5132 RH |
249 | 0, /* src_mask */ |
250 | 0xffff, /* dst_mask */ | |
b34976b6 | 251 | FALSE), /* pcrel_offset */ |
252b5132 RH |
252 | |
253 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 254 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
255 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
256 | 16, /* rightshift */ | |
257 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 16, /* bitsize */ | |
b34976b6 | 259 | FALSE, /* pc_relative */ |
252b5132 RH |
260 | 0, /* bitpos */ |
261 | complain_overflow_dont, /* complain_on_overflow */ | |
262 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
263 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 264 | FALSE, /* partial_inplace */ |
252b5132 RH |
265 | 0, /* src_mask */ |
266 | 0xffff, /* dst_mask */ | |
b34976b6 | 267 | FALSE), /* pcrel_offset */ |
252b5132 RH |
268 | |
269 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
270 | FIXME: we don't check that, we just clear them. */ | |
271 | HOWTO (R_PPC_ADDR14, /* type */ | |
272 | 0, /* rightshift */ | |
273 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
274 | 16, /* bitsize */ | |
b34976b6 | 275 | FALSE, /* pc_relative */ |
252b5132 RH |
276 | 0, /* bitpos */ |
277 | complain_overflow_bitfield, /* complain_on_overflow */ | |
278 | bfd_elf_generic_reloc, /* special_function */ | |
279 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 280 | FALSE, /* partial_inplace */ |
252b5132 RH |
281 | 0, /* src_mask */ |
282 | 0xfffc, /* dst_mask */ | |
b34976b6 | 283 | FALSE), /* pcrel_offset */ |
252b5132 RH |
284 | |
285 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
286 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 287 | bits must be zero. */ |
252b5132 RH |
288 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
289 | 0, /* rightshift */ | |
290 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
291 | 16, /* bitsize */ | |
b34976b6 | 292 | FALSE, /* pc_relative */ |
252b5132 RH |
293 | 0, /* bitpos */ |
294 | complain_overflow_bitfield, /* complain_on_overflow */ | |
295 | bfd_elf_generic_reloc, /* special_function */ | |
296 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 297 | FALSE, /* partial_inplace */ |
252b5132 RH |
298 | 0, /* src_mask */ |
299 | 0xfffc, /* dst_mask */ | |
b34976b6 | 300 | FALSE), /* pcrel_offset */ |
252b5132 RH |
301 | |
302 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
303 | indicate that the branch is not expected to be taken. The lower | |
304 | two bits must be zero. */ | |
305 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
b34976b6 | 309 | FALSE, /* pc_relative */ |
252b5132 RH |
310 | 0, /* bitpos */ |
311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
312 | bfd_elf_generic_reloc, /* special_function */ | |
313 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 314 | FALSE, /* partial_inplace */ |
252b5132 RH |
315 | 0, /* src_mask */ |
316 | 0xfffc, /* dst_mask */ | |
b34976b6 | 317 | FALSE), /* pcrel_offset */ |
252b5132 | 318 | |
8da6118f | 319 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
320 | HOWTO (R_PPC_REL24, /* type */ |
321 | 0, /* rightshift */ | |
322 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
323 | 26, /* bitsize */ | |
b34976b6 | 324 | TRUE, /* pc_relative */ |
252b5132 RH |
325 | 0, /* bitpos */ |
326 | complain_overflow_signed, /* complain_on_overflow */ | |
327 | bfd_elf_generic_reloc, /* special_function */ | |
328 | "R_PPC_REL24", /* name */ | |
b34976b6 | 329 | FALSE, /* partial_inplace */ |
252b5132 RH |
330 | 0, /* src_mask */ |
331 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 332 | TRUE), /* pcrel_offset */ |
252b5132 | 333 | |
8da6118f | 334 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
335 | HOWTO (R_PPC_REL14, /* type */ |
336 | 0, /* rightshift */ | |
337 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | TRUE, /* pc_relative */ |
252b5132 RH |
340 | 0, /* bitpos */ |
341 | complain_overflow_signed, /* complain_on_overflow */ | |
342 | bfd_elf_generic_reloc, /* special_function */ | |
343 | "R_PPC_REL14", /* name */ | |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
252b5132 RH |
345 | 0, /* src_mask */ |
346 | 0xfffc, /* dst_mask */ | |
b34976b6 | 347 | TRUE), /* pcrel_offset */ |
252b5132 | 348 | |
8da6118f | 349 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
350 | the branch is expected to be taken. The lower two bits must be |
351 | zero. */ | |
352 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 16, /* bitsize */ | |
b34976b6 | 356 | TRUE, /* pc_relative */ |
252b5132 RH |
357 | 0, /* bitpos */ |
358 | complain_overflow_signed, /* complain_on_overflow */ | |
359 | bfd_elf_generic_reloc, /* special_function */ | |
360 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 361 | FALSE, /* partial_inplace */ |
252b5132 RH |
362 | 0, /* src_mask */ |
363 | 0xfffc, /* dst_mask */ | |
b34976b6 | 364 | TRUE), /* pcrel_offset */ |
252b5132 | 365 | |
8da6118f | 366 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
367 | the branch is not expected to be taken. The lower two bits must |
368 | be zero. */ | |
369 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 16, /* bitsize */ | |
b34976b6 | 373 | TRUE, /* pc_relative */ |
252b5132 RH |
374 | 0, /* bitpos */ |
375 | complain_overflow_signed, /* complain_on_overflow */ | |
376 | bfd_elf_generic_reloc, /* special_function */ | |
377 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 378 | FALSE, /* partial_inplace */ |
252b5132 RH |
379 | 0, /* src_mask */ |
380 | 0xfffc, /* dst_mask */ | |
b34976b6 | 381 | TRUE), /* pcrel_offset */ |
252b5132 RH |
382 | |
383 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
384 | symbol. */ | |
385 | HOWTO (R_PPC_GOT16, /* type */ | |
386 | 0, /* rightshift */ | |
387 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 16, /* bitsize */ | |
b34976b6 | 389 | FALSE, /* pc_relative */ |
252b5132 RH |
390 | 0, /* bitpos */ |
391 | complain_overflow_signed, /* complain_on_overflow */ | |
392 | bfd_elf_generic_reloc, /* special_function */ | |
393 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 394 | FALSE, /* partial_inplace */ |
252b5132 RH |
395 | 0, /* src_mask */ |
396 | 0xffff, /* dst_mask */ | |
b34976b6 | 397 | FALSE), /* pcrel_offset */ |
252b5132 RH |
398 | |
399 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
400 | the symbol. */ | |
401 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
252b5132 RH |
406 | 0, /* bitpos */ |
407 | complain_overflow_dont, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
252b5132 RH |
411 | 0, /* src_mask */ |
412 | 0xffff, /* dst_mask */ | |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
252b5132 RH |
414 | |
415 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
416 | the symbol. */ | |
417 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
418 | 16, /* rightshift */ | |
419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 16, /* bitsize */ | |
b34976b6 | 421 | FALSE, /* pc_relative */ |
252b5132 RH |
422 | 0, /* bitpos */ |
423 | complain_overflow_bitfield, /* complain_on_overflow */ | |
424 | bfd_elf_generic_reloc, /* special_function */ | |
425 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 426 | FALSE, /* partial_inplace */ |
252b5132 RH |
427 | 0, /* src_mask */ |
428 | 0xffff, /* dst_mask */ | |
b34976b6 | 429 | FALSE), /* pcrel_offset */ |
252b5132 RH |
430 | |
431 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
432 | the symbol. */ | |
433 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
434 | 16, /* rightshift */ | |
435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 16, /* bitsize */ | |
b34976b6 | 437 | FALSE, /* pc_relative */ |
252b5132 RH |
438 | 0, /* bitpos */ |
439 | complain_overflow_bitfield, /* complain_on_overflow */ | |
440 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
441 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
252b5132 RH |
443 | 0, /* src_mask */ |
444 | 0xffff, /* dst_mask */ | |
b34976b6 | 445 | FALSE), /* pcrel_offset */ |
252b5132 RH |
446 | |
447 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
448 | entry for the symbol. */ | |
449 | HOWTO (R_PPC_PLTREL24, /* type */ | |
450 | 0, /* rightshift */ | |
451 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 26, /* bitsize */ | |
b34976b6 | 453 | TRUE, /* pc_relative */ |
252b5132 RH |
454 | 0, /* bitpos */ |
455 | complain_overflow_signed, /* complain_on_overflow */ | |
456 | bfd_elf_generic_reloc, /* special_function */ | |
457 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 458 | FALSE, /* partial_inplace */ |
252b5132 RH |
459 | 0, /* src_mask */ |
460 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 461 | TRUE), /* pcrel_offset */ |
252b5132 RH |
462 | |
463 | /* This is used only by the dynamic linker. The symbol should exist | |
464 | both in the object being run and in some shared library. The | |
465 | dynamic linker copies the data addressed by the symbol from the | |
466 | shared library into the object, because the object being | |
467 | run has to have the data at some particular address. */ | |
468 | HOWTO (R_PPC_COPY, /* type */ | |
469 | 0, /* rightshift */ | |
470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
471 | 32, /* bitsize */ | |
b34976b6 | 472 | FALSE, /* pc_relative */ |
252b5132 RH |
473 | 0, /* bitpos */ |
474 | complain_overflow_bitfield, /* complain_on_overflow */ | |
475 | bfd_elf_generic_reloc, /* special_function */ | |
476 | "R_PPC_COPY", /* name */ | |
b34976b6 | 477 | FALSE, /* partial_inplace */ |
252b5132 RH |
478 | 0, /* src_mask */ |
479 | 0, /* dst_mask */ | |
b34976b6 | 480 | FALSE), /* pcrel_offset */ |
252b5132 RH |
481 | |
482 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
483 | entries. */ | |
484 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 32, /* bitsize */ | |
b34976b6 | 488 | FALSE, /* pc_relative */ |
252b5132 RH |
489 | 0, /* bitpos */ |
490 | complain_overflow_bitfield, /* complain_on_overflow */ | |
491 | bfd_elf_generic_reloc, /* special_function */ | |
492 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
252b5132 RH |
494 | 0, /* src_mask */ |
495 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 496 | FALSE), /* pcrel_offset */ |
252b5132 RH |
497 | |
498 | /* Marks a procedure linkage table entry for a symbol. */ | |
499 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
500 | 0, /* rightshift */ | |
501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 32, /* bitsize */ | |
b34976b6 | 503 | FALSE, /* pc_relative */ |
252b5132 RH |
504 | 0, /* bitpos */ |
505 | complain_overflow_bitfield, /* complain_on_overflow */ | |
506 | bfd_elf_generic_reloc, /* special_function */ | |
507 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 508 | FALSE, /* partial_inplace */ |
252b5132 RH |
509 | 0, /* src_mask */ |
510 | 0, /* dst_mask */ | |
b34976b6 | 511 | FALSE), /* pcrel_offset */ |
252b5132 RH |
512 | |
513 | /* Used only by the dynamic linker. When the object is run, this | |
514 | longword is set to the load address of the object, plus the | |
515 | addend. */ | |
516 | HOWTO (R_PPC_RELATIVE, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 32, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
252b5132 RH |
521 | 0, /* bitpos */ |
522 | complain_overflow_bitfield, /* complain_on_overflow */ | |
523 | bfd_elf_generic_reloc, /* special_function */ | |
524 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
252b5132 RH |
526 | 0, /* src_mask */ |
527 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
252b5132 RH |
529 | |
530 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
531 | object rather than the final value. Normally used for | |
532 | _GLOBAL_OFFSET_TABLE_. */ | |
533 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
534 | 0, /* rightshift */ | |
535 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
536 | 26, /* bitsize */ | |
b34976b6 | 537 | TRUE, /* pc_relative */ |
252b5132 RH |
538 | 0, /* bitpos */ |
539 | complain_overflow_signed, /* complain_on_overflow */ | |
540 | bfd_elf_generic_reloc, /* special_function */ | |
541 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 542 | FALSE, /* partial_inplace */ |
252b5132 RH |
543 | 0, /* src_mask */ |
544 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 545 | TRUE), /* pcrel_offset */ |
252b5132 RH |
546 | |
547 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
548 | HOWTO (R_PPC_UADDR32, /* type */ | |
549 | 0, /* rightshift */ | |
550 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
551 | 32, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
252b5132 RH |
553 | 0, /* bitpos */ |
554 | complain_overflow_bitfield, /* complain_on_overflow */ | |
555 | bfd_elf_generic_reloc, /* special_function */ | |
556 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
252b5132 RH |
558 | 0, /* src_mask */ |
559 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
252b5132 RH |
561 | |
562 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
563 | HOWTO (R_PPC_UADDR16, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 16, /* bitsize */ | |
b34976b6 | 567 | FALSE, /* pc_relative */ |
252b5132 RH |
568 | 0, /* bitpos */ |
569 | complain_overflow_bitfield, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
571 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
252b5132 RH |
573 | 0, /* src_mask */ |
574 | 0xffff, /* dst_mask */ | |
b34976b6 | 575 | FALSE), /* pcrel_offset */ |
252b5132 RH |
576 | |
577 | /* 32-bit PC relative */ | |
578 | HOWTO (R_PPC_REL32, /* type */ | |
579 | 0, /* rightshift */ | |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 32, /* bitsize */ | |
b34976b6 | 582 | TRUE, /* pc_relative */ |
252b5132 RH |
583 | 0, /* bitpos */ |
584 | complain_overflow_bitfield, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
586 | "R_PPC_REL32", /* name */ | |
b34976b6 | 587 | FALSE, /* partial_inplace */ |
252b5132 RH |
588 | 0, /* src_mask */ |
589 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 590 | TRUE), /* pcrel_offset */ |
252b5132 RH |
591 | |
592 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 593 | FIXME: not supported. */ |
252b5132 RH |
594 | HOWTO (R_PPC_PLT32, /* type */ |
595 | 0, /* rightshift */ | |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 32, /* bitsize */ | |
b34976b6 | 598 | FALSE, /* pc_relative */ |
252b5132 RH |
599 | 0, /* bitpos */ |
600 | complain_overflow_bitfield, /* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
602 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 603 | FALSE, /* partial_inplace */ |
252b5132 RH |
604 | 0, /* src_mask */ |
605 | 0, /* dst_mask */ | |
b34976b6 | 606 | FALSE), /* pcrel_offset */ |
252b5132 RH |
607 | |
608 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 609 | FIXME: not supported. */ |
252b5132 RH |
610 | HOWTO (R_PPC_PLTREL32, /* type */ |
611 | 0, /* rightshift */ | |
612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
613 | 32, /* bitsize */ | |
b34976b6 | 614 | TRUE, /* pc_relative */ |
252b5132 RH |
615 | 0, /* bitpos */ |
616 | complain_overflow_bitfield, /* complain_on_overflow */ | |
617 | bfd_elf_generic_reloc, /* special_function */ | |
618 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 619 | FALSE, /* partial_inplace */ |
252b5132 RH |
620 | 0, /* src_mask */ |
621 | 0, /* dst_mask */ | |
b34976b6 | 622 | TRUE), /* pcrel_offset */ |
252b5132 RH |
623 | |
624 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
625 | the symbol. */ | |
626 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
627 | 0, /* rightshift */ | |
628 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
629 | 16, /* bitsize */ | |
b34976b6 | 630 | FALSE, /* pc_relative */ |
252b5132 RH |
631 | 0, /* bitpos */ |
632 | complain_overflow_dont, /* complain_on_overflow */ | |
633 | bfd_elf_generic_reloc, /* special_function */ | |
634 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 635 | FALSE, /* partial_inplace */ |
252b5132 RH |
636 | 0, /* src_mask */ |
637 | 0xffff, /* dst_mask */ | |
b34976b6 | 638 | FALSE), /* pcrel_offset */ |
252b5132 RH |
639 | |
640 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
641 | the symbol. */ | |
642 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
643 | 16, /* rightshift */ | |
644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 16, /* bitsize */ | |
b34976b6 | 646 | FALSE, /* pc_relative */ |
252b5132 RH |
647 | 0, /* bitpos */ |
648 | complain_overflow_bitfield, /* complain_on_overflow */ | |
649 | bfd_elf_generic_reloc, /* special_function */ | |
650 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
252b5132 RH |
652 | 0, /* src_mask */ |
653 | 0xffff, /* dst_mask */ | |
b34976b6 | 654 | FALSE), /* pcrel_offset */ |
252b5132 RH |
655 | |
656 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
657 | the symbol. */ | |
658 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
659 | 16, /* rightshift */ | |
660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
661 | 16, /* bitsize */ | |
b34976b6 | 662 | FALSE, /* pc_relative */ |
252b5132 RH |
663 | 0, /* bitpos */ |
664 | complain_overflow_bitfield, /* complain_on_overflow */ | |
665 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
666 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 667 | FALSE, /* partial_inplace */ |
252b5132 RH |
668 | 0, /* src_mask */ |
669 | 0xffff, /* dst_mask */ | |
b34976b6 | 670 | FALSE), /* pcrel_offset */ |
252b5132 RH |
671 | |
672 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
673 | small data items. */ | |
674 | HOWTO (R_PPC_SDAREL16, /* type */ | |
675 | 0, /* rightshift */ | |
676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 16, /* bitsize */ | |
b34976b6 | 678 | FALSE, /* pc_relative */ |
252b5132 RH |
679 | 0, /* bitpos */ |
680 | complain_overflow_signed, /* complain_on_overflow */ | |
681 | bfd_elf_generic_reloc, /* special_function */ | |
682 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 683 | FALSE, /* partial_inplace */ |
252b5132 RH |
684 | 0, /* src_mask */ |
685 | 0xffff, /* dst_mask */ | |
b34976b6 | 686 | FALSE), /* pcrel_offset */ |
252b5132 | 687 | |
c061c2d8 | 688 | /* 16-bit section relative relocation. */ |
252b5132 RH |
689 | HOWTO (R_PPC_SECTOFF, /* type */ |
690 | 0, /* rightshift */ | |
c061c2d8 AM |
691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
692 | 16, /* bitsize */ | |
b34976b6 | 693 | FALSE, /* pc_relative */ |
252b5132 RH |
694 | 0, /* bitpos */ |
695 | complain_overflow_bitfield, /* complain_on_overflow */ | |
696 | bfd_elf_generic_reloc, /* special_function */ | |
697 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 698 | FALSE, /* partial_inplace */ |
252b5132 | 699 | 0, /* src_mask */ |
c061c2d8 | 700 | 0xffff, /* dst_mask */ |
b34976b6 | 701 | FALSE), /* pcrel_offset */ |
252b5132 | 702 | |
c3668558 | 703 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
704 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
705 | 0, /* rightshift */ | |
706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
707 | 16, /* bitsize */ | |
b34976b6 | 708 | FALSE, /* pc_relative */ |
252b5132 RH |
709 | 0, /* bitpos */ |
710 | complain_overflow_dont, /* complain_on_overflow */ | |
711 | bfd_elf_generic_reloc, /* special_function */ | |
712 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 713 | FALSE, /* partial_inplace */ |
252b5132 RH |
714 | 0, /* src_mask */ |
715 | 0xffff, /* dst_mask */ | |
b34976b6 | 716 | FALSE), /* pcrel_offset */ |
252b5132 | 717 | |
c3668558 | 718 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
719 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
720 | 16, /* rightshift */ | |
721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
722 | 16, /* bitsize */ | |
b34976b6 | 723 | FALSE, /* pc_relative */ |
252b5132 RH |
724 | 0, /* bitpos */ |
725 | complain_overflow_bitfield, /* complain_on_overflow */ | |
726 | bfd_elf_generic_reloc, /* special_function */ | |
727 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 728 | FALSE, /* partial_inplace */ |
252b5132 RH |
729 | 0, /* src_mask */ |
730 | 0xffff, /* dst_mask */ | |
b34976b6 | 731 | FALSE), /* pcrel_offset */ |
252b5132 | 732 | |
c3668558 | 733 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
734 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
735 | 16, /* rightshift */ | |
736 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 16, /* bitsize */ | |
b34976b6 | 738 | FALSE, /* pc_relative */ |
252b5132 RH |
739 | 0, /* bitpos */ |
740 | complain_overflow_bitfield, /* complain_on_overflow */ | |
741 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
742 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 743 | FALSE, /* partial_inplace */ |
252b5132 RH |
744 | 0, /* src_mask */ |
745 | 0xffff, /* dst_mask */ | |
b34976b6 | 746 | FALSE), /* pcrel_offset */ |
252b5132 | 747 | |
7619e7c7 AM |
748 | /* Marker reloc for TLS. */ |
749 | HOWTO (R_PPC_TLS, | |
252b5132 RH |
750 | 0, /* rightshift */ |
751 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 32, /* bitsize */ | |
b34976b6 | 753 | FALSE, /* pc_relative */ |
252b5132 | 754 | 0, /* bitpos */ |
7619e7c7 | 755 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 756 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
757 | "R_PPC_TLS", /* name */ |
758 | FALSE, /* partial_inplace */ | |
759 | 0, /* src_mask */ | |
760 | 0, /* dst_mask */ | |
761 | FALSE), /* pcrel_offset */ | |
762 | ||
763 | /* Computes the load module index of the load module that contains the | |
764 | definition of its TLS sym. */ | |
765 | HOWTO (R_PPC_DTPMOD32, | |
766 | 0, /* rightshift */ | |
767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 32, /* bitsize */ | |
769 | FALSE, /* pc_relative */ | |
770 | 0, /* bitpos */ | |
771 | complain_overflow_dont, /* complain_on_overflow */ | |
772 | ppc_elf_unhandled_reloc, /* special_function */ | |
773 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 774 | FALSE, /* partial_inplace */ |
252b5132 RH |
775 | 0, /* src_mask */ |
776 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 777 | FALSE), /* pcrel_offset */ |
252b5132 | 778 | |
7619e7c7 AM |
779 | /* Computes a dtv-relative displacement, the difference between the value |
780 | of sym+add and the base address of the thread-local storage block that | |
781 | contains the definition of sym, minus 0x8000. */ | |
782 | HOWTO (R_PPC_DTPREL32, | |
783 | 0, /* rightshift */ | |
784 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 32, /* bitsize */ | |
786 | FALSE, /* pc_relative */ | |
787 | 0, /* bitpos */ | |
788 | complain_overflow_dont, /* complain_on_overflow */ | |
789 | ppc_elf_unhandled_reloc, /* special_function */ | |
790 | "R_PPC_DTPREL32", /* name */ | |
791 | FALSE, /* partial_inplace */ | |
792 | 0, /* src_mask */ | |
793 | 0xffffffff, /* dst_mask */ | |
794 | FALSE), /* pcrel_offset */ | |
795 | ||
796 | /* A 16 bit dtprel reloc. */ | |
797 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
798 | 0, /* rightshift */ |
799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 16, /* bitsize */ | |
b34976b6 | 801 | FALSE, /* pc_relative */ |
252b5132 | 802 | 0, /* bitpos */ |
7619e7c7 AM |
803 | complain_overflow_signed, /* complain_on_overflow */ |
804 | ppc_elf_unhandled_reloc, /* special_function */ | |
805 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 806 | FALSE, /* partial_inplace */ |
252b5132 RH |
807 | 0, /* src_mask */ |
808 | 0xffff, /* dst_mask */ | |
b34976b6 | 809 | FALSE), /* pcrel_offset */ |
252b5132 | 810 | |
7619e7c7 AM |
811 | /* Like DTPREL16, but no overflow. */ |
812 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
813 | 0, /* rightshift */ |
814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
815 | 16, /* bitsize */ | |
b34976b6 | 816 | FALSE, /* pc_relative */ |
252b5132 | 817 | 0, /* bitpos */ |
7619e7c7 AM |
818 | complain_overflow_dont, /* complain_on_overflow */ |
819 | ppc_elf_unhandled_reloc, /* special_function */ | |
820 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 821 | FALSE, /* partial_inplace */ |
252b5132 RH |
822 | 0, /* src_mask */ |
823 | 0xffff, /* dst_mask */ | |
b34976b6 | 824 | FALSE), /* pcrel_offset */ |
252b5132 | 825 | |
7619e7c7 AM |
826 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
827 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
828 | 16, /* rightshift */ |
829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
830 | 16, /* bitsize */ | |
b34976b6 | 831 | FALSE, /* pc_relative */ |
252b5132 RH |
832 | 0, /* bitpos */ |
833 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
834 | ppc_elf_unhandled_reloc, /* special_function */ |
835 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 836 | FALSE, /* partial_inplace */ |
252b5132 RH |
837 | 0, /* src_mask */ |
838 | 0xffff, /* dst_mask */ | |
b34976b6 | 839 | FALSE), /* pcrel_offset */ |
252b5132 | 840 | |
7619e7c7 AM |
841 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
842 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
843 | 16, /* rightshift */ |
844 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
845 | 16, /* bitsize */ | |
b34976b6 | 846 | FALSE, /* pc_relative */ |
252b5132 RH |
847 | 0, /* bitpos */ |
848 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
849 | ppc_elf_unhandled_reloc, /* special_function */ |
850 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 851 | FALSE, /* partial_inplace */ |
252b5132 RH |
852 | 0, /* src_mask */ |
853 | 0xffff, /* dst_mask */ | |
b34976b6 | 854 | FALSE), /* pcrel_offset */ |
252b5132 | 855 | |
7619e7c7 AM |
856 | /* Computes a tp-relative displacement, the difference between the value of |
857 | sym+add and the value of the thread pointer (r13). */ | |
858 | HOWTO (R_PPC_TPREL32, | |
859 | 0, /* rightshift */ | |
860 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
861 | 32, /* bitsize */ | |
862 | FALSE, /* pc_relative */ | |
863 | 0, /* bitpos */ | |
864 | complain_overflow_dont, /* complain_on_overflow */ | |
865 | ppc_elf_unhandled_reloc, /* special_function */ | |
866 | "R_PPC_TPREL32", /* name */ | |
867 | FALSE, /* partial_inplace */ | |
868 | 0, /* src_mask */ | |
869 | 0xffffffff, /* dst_mask */ | |
870 | FALSE), /* pcrel_offset */ | |
871 | ||
872 | /* A 16 bit tprel reloc. */ | |
873 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
874 | 0, /* rightshift */ |
875 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
876 | 16, /* bitsize */ | |
b34976b6 | 877 | FALSE, /* pc_relative */ |
252b5132 | 878 | 0, /* bitpos */ |
7619e7c7 AM |
879 | complain_overflow_signed, /* complain_on_overflow */ |
880 | ppc_elf_unhandled_reloc, /* special_function */ | |
881 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 882 | FALSE, /* partial_inplace */ |
252b5132 RH |
883 | 0, /* src_mask */ |
884 | 0xffff, /* dst_mask */ | |
b34976b6 | 885 | FALSE), /* pcrel_offset */ |
252b5132 | 886 | |
7619e7c7 AM |
887 | /* Like TPREL16, but no overflow. */ |
888 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
889 | 0, /* rightshift */ |
890 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
891 | 16, /* bitsize */ | |
b34976b6 | 892 | FALSE, /* pc_relative */ |
252b5132 | 893 | 0, /* bitpos */ |
7619e7c7 AM |
894 | complain_overflow_dont, /* complain_on_overflow */ |
895 | ppc_elf_unhandled_reloc, /* special_function */ | |
896 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 897 | FALSE, /* partial_inplace */ |
252b5132 RH |
898 | 0, /* src_mask */ |
899 | 0xffff, /* dst_mask */ | |
b34976b6 | 900 | FALSE), /* pcrel_offset */ |
252b5132 | 901 | |
7619e7c7 AM |
902 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
903 | HOWTO (R_PPC_TPREL16_HI, | |
904 | 16, /* rightshift */ | |
905 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
906 | 16, /* bitsize */ | |
907 | FALSE, /* pc_relative */ | |
908 | 0, /* bitpos */ | |
909 | complain_overflow_dont, /* complain_on_overflow */ | |
910 | ppc_elf_unhandled_reloc, /* special_function */ | |
911 | "R_PPC_TPREL16_HI", /* name */ | |
912 | FALSE, /* partial_inplace */ | |
913 | 0, /* src_mask */ | |
914 | 0xffff, /* dst_mask */ | |
915 | FALSE), /* pcrel_offset */ | |
916 | ||
917 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
918 | HOWTO (R_PPC_TPREL16_HA, | |
919 | 16, /* rightshift */ | |
920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 16, /* bitsize */ | |
922 | FALSE, /* pc_relative */ | |
923 | 0, /* bitpos */ | |
924 | complain_overflow_dont, /* complain_on_overflow */ | |
925 | ppc_elf_unhandled_reloc, /* special_function */ | |
926 | "R_PPC_TPREL16_HA", /* name */ | |
927 | FALSE, /* partial_inplace */ | |
928 | 0, /* src_mask */ | |
929 | 0xffff, /* dst_mask */ | |
930 | FALSE), /* pcrel_offset */ | |
931 | ||
932 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
933 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
934 | to the first entry. */ | |
935 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
936 | 0, /* rightshift */ |
937 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 16, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
252b5132 RH |
940 | 0, /* bitpos */ |
941 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
942 | ppc_elf_unhandled_reloc, /* special_function */ |
943 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
252b5132 RH |
945 | 0, /* src_mask */ |
946 | 0xffff, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
252b5132 | 948 | |
7619e7c7 AM |
949 | /* Like GOT_TLSGD16, but no overflow. */ |
950 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 951 | 0, /* rightshift */ |
7619e7c7 | 952 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 953 | 16, /* bitsize */ |
b34976b6 | 954 | FALSE, /* pc_relative */ |
252b5132 | 955 | 0, /* bitpos */ |
7619e7c7 AM |
956 | complain_overflow_dont, /* complain_on_overflow */ |
957 | ppc_elf_unhandled_reloc, /* special_function */ | |
958 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 959 | FALSE, /* partial_inplace */ |
252b5132 RH |
960 | 0, /* src_mask */ |
961 | 0xffff, /* dst_mask */ | |
b34976b6 | 962 | FALSE), /* pcrel_offset */ |
252b5132 | 963 | |
7619e7c7 AM |
964 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
965 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
966 | 16, /* rightshift */ | |
967 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 16, /* bitsize */ | |
969 | FALSE, /* pc_relative */ | |
970 | 0, /* bitpos */ | |
971 | complain_overflow_dont, /* complain_on_overflow */ | |
972 | ppc_elf_unhandled_reloc, /* special_function */ | |
973 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
974 | FALSE, /* partial_inplace */ | |
975 | 0, /* src_mask */ | |
976 | 0xffff, /* dst_mask */ | |
977 | FALSE), /* pcrel_offset */ | |
252b5132 | 978 | |
7619e7c7 AM |
979 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
980 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
981 | 16, /* rightshift */ | |
982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 16, /* bitsize */ | |
984 | FALSE, /* pc_relative */ | |
985 | 0, /* bitpos */ | |
986 | complain_overflow_dont, /* complain_on_overflow */ | |
987 | ppc_elf_unhandled_reloc, /* special_function */ | |
988 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
989 | FALSE, /* partial_inplace */ | |
990 | 0, /* src_mask */ | |
991 | 0xffff, /* dst_mask */ | |
992 | FALSE), /* pcrel_offset */ | |
993 | ||
994 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
995 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
996 | first entry. */ | |
997 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
998 | 0, /* rightshift */ |
999 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1000 | 16, /* bitsize */ | |
7619e7c7 | 1001 | FALSE, /* pc_relative */ |
252b5132 RH |
1002 | 0, /* bitpos */ |
1003 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1004 | ppc_elf_unhandled_reloc, /* special_function */ |
1005 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1006 | FALSE, /* partial_inplace */ |
252b5132 RH |
1007 | 0, /* src_mask */ |
1008 | 0xffff, /* dst_mask */ | |
b34976b6 | 1009 | FALSE), /* pcrel_offset */ |
252b5132 | 1010 | |
7619e7c7 AM |
1011 | /* Like GOT_TLSLD16, but no overflow. */ |
1012 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1013 | 0, /* rightshift */ |
7619e7c7 AM |
1014 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1015 | 16, /* bitsize */ | |
b34976b6 | 1016 | FALSE, /* pc_relative */ |
252b5132 RH |
1017 | 0, /* bitpos */ |
1018 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1019 | ppc_elf_unhandled_reloc, /* special_function */ |
1020 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1021 | FALSE, /* partial_inplace */ |
252b5132 | 1022 | 0, /* src_mask */ |
7619e7c7 | 1023 | 0xffff, /* dst_mask */ |
b34976b6 | 1024 | FALSE), /* pcrel_offset */ |
252b5132 | 1025 | |
7619e7c7 AM |
1026 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1027 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1028 | 16, /* rightshift */ | |
1029 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1030 | 16, /* bitsize */ | |
b34976b6 | 1031 | FALSE, /* pc_relative */ |
252b5132 RH |
1032 | 0, /* bitpos */ |
1033 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1034 | ppc_elf_unhandled_reloc, /* special_function */ |
1035 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1036 | FALSE, /* partial_inplace */ |
252b5132 | 1037 | 0, /* src_mask */ |
7619e7c7 | 1038 | 0xffff, /* dst_mask */ |
b34976b6 | 1039 | FALSE), /* pcrel_offset */ |
252b5132 | 1040 | |
7619e7c7 AM |
1041 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1042 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1043 | 16, /* rightshift */ | |
1044 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1045 | 16, /* bitsize */ | |
1046 | FALSE, /* pc_relative */ | |
1047 | 0, /* bitpos */ | |
1048 | complain_overflow_dont, /* complain_on_overflow */ | |
1049 | ppc_elf_unhandled_reloc, /* special_function */ | |
1050 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1051 | FALSE, /* partial_inplace */ | |
1052 | 0, /* src_mask */ | |
1053 | 0xffff, /* dst_mask */ | |
1054 | FALSE), /* pcrel_offset */ | |
1055 | ||
1056 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1057 | the offset to the entry. */ | |
1058 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1059 | 0, /* rightshift */ |
1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 16, /* bitsize */ | |
b34976b6 | 1062 | FALSE, /* pc_relative */ |
252b5132 RH |
1063 | 0, /* bitpos */ |
1064 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1065 | ppc_elf_unhandled_reloc, /* special_function */ |
1066 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1067 | FALSE, /* partial_inplace */ |
252b5132 RH |
1068 | 0, /* src_mask */ |
1069 | 0xffff, /* dst_mask */ | |
b34976b6 | 1070 | FALSE), /* pcrel_offset */ |
252b5132 | 1071 | |
7619e7c7 AM |
1072 | /* Like GOT_DTPREL16, but no overflow. */ |
1073 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1074 | 0, /* rightshift */ | |
1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 16, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_dont, /* complain_on_overflow */ | |
1080 | ppc_elf_unhandled_reloc, /* special_function */ | |
1081 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xffff, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
252b5132 | 1086 | |
7619e7c7 AM |
1087 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1088 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1089 | 16, /* rightshift */ | |
1090 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 16, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont, /* complain_on_overflow */ | |
1095 | ppc_elf_unhandled_reloc, /* special_function */ | |
1096 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0, /* src_mask */ | |
1099 | 0xffff, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
252b5132 | 1101 | |
7619e7c7 AM |
1102 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1103 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1104 | 16, /* rightshift */ | |
1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_dont, /* complain_on_overflow */ | |
1110 | ppc_elf_unhandled_reloc, /* special_function */ | |
1111 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xffff, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
c3668558 | 1116 | |
7619e7c7 AM |
1117 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1118 | offset to the entry. */ | |
1119 | HOWTO (R_PPC_GOT_TPREL16, | |
1120 | 0, /* rightshift */ | |
1121 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1122 | 16, /* bitsize */ | |
1123 | FALSE, /* pc_relative */ | |
1124 | 0, /* bitpos */ | |
1125 | complain_overflow_signed, /* complain_on_overflow */ | |
1126 | ppc_elf_unhandled_reloc, /* special_function */ | |
1127 | "R_PPC_GOT_TPREL16", /* name */ | |
1128 | FALSE, /* partial_inplace */ | |
1129 | 0, /* src_mask */ | |
1130 | 0xffff, /* dst_mask */ | |
1131 | FALSE), /* pcrel_offset */ | |
1132 | ||
1133 | /* Like GOT_TPREL16, but no overflow. */ | |
1134 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1135 | 0, /* rightshift */ | |
1136 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1137 | 16, /* bitsize */ | |
1138 | FALSE, /* pc_relative */ | |
1139 | 0, /* bitpos */ | |
1140 | complain_overflow_dont, /* complain_on_overflow */ | |
1141 | ppc_elf_unhandled_reloc, /* special_function */ | |
1142 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1143 | FALSE, /* partial_inplace */ | |
1144 | 0, /* src_mask */ | |
1145 | 0xffff, /* dst_mask */ | |
1146 | FALSE), /* pcrel_offset */ | |
1147 | ||
1148 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1149 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1150 | 16, /* rightshift */ | |
1151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1152 | 16, /* bitsize */ | |
1153 | FALSE, /* pc_relative */ | |
1154 | 0, /* bitpos */ | |
1155 | complain_overflow_dont, /* complain_on_overflow */ | |
1156 | ppc_elf_unhandled_reloc, /* special_function */ | |
1157 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1158 | FALSE, /* partial_inplace */ | |
1159 | 0, /* src_mask */ | |
1160 | 0xffff, /* dst_mask */ | |
1161 | FALSE), /* pcrel_offset */ | |
1162 | ||
1163 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1164 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1165 | 16, /* rightshift */ | |
1166 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1167 | 16, /* bitsize */ | |
1168 | FALSE, /* pc_relative */ | |
1169 | 0, /* bitpos */ | |
1170 | complain_overflow_dont, /* complain_on_overflow */ | |
1171 | ppc_elf_unhandled_reloc, /* special_function */ | |
1172 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1173 | FALSE, /* partial_inplace */ | |
1174 | 0, /* src_mask */ | |
1175 | 0xffff, /* dst_mask */ | |
1176 | FALSE), /* pcrel_offset */ | |
1177 | ||
1178 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1179 | in the SVR4 ELF ABI. */ | |
1180 | ||
1181 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1182 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1183 | 0, /* rightshift */ | |
1184 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1185 | 32, /* bitsize */ | |
1186 | FALSE, /* pc_relative */ | |
1187 | 0, /* bitpos */ | |
1188 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1189 | bfd_elf_generic_reloc, /* special_function */ | |
1190 | "R_PPC_EMB_NADDR32", /* name */ | |
1191 | FALSE, /* partial_inplace */ | |
1192 | 0, /* src_mask */ | |
1193 | 0xffffffff, /* dst_mask */ | |
1194 | FALSE), /* pcrel_offset */ | |
1195 | ||
1196 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1197 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1198 | 0, /* rightshift */ | |
1199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1200 | 16, /* bitsize */ | |
1201 | FALSE, /* pc_relative */ | |
1202 | 0, /* bitpos */ | |
1203 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1204 | bfd_elf_generic_reloc, /* special_function */ | |
1205 | "R_PPC_EMB_NADDR16", /* name */ | |
1206 | FALSE, /* partial_inplace */ | |
1207 | 0, /* src_mask */ | |
1208 | 0xffff, /* dst_mask */ | |
1209 | FALSE), /* pcrel_offset */ | |
1210 | ||
1211 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1212 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1213 | 0, /* rightshift */ | |
1214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 16, /* bitsize */ | |
1216 | FALSE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_dont,/* complain_on_overflow */ | |
1219 | bfd_elf_generic_reloc, /* special_function */ | |
1220 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0, /* src_mask */ | |
1223 | 0xffff, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | ||
1226 | /* The high order 16 bits of the addend minus the symbol. */ | |
1227 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1228 | 16, /* rightshift */ | |
1229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1230 | 16, /* bitsize */ | |
1231 | FALSE, /* pc_relative */ | |
1232 | 0, /* bitpos */ | |
1233 | complain_overflow_dont, /* complain_on_overflow */ | |
1234 | bfd_elf_generic_reloc, /* special_function */ | |
1235 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1236 | FALSE, /* partial_inplace */ | |
1237 | 0, /* src_mask */ | |
1238 | 0xffff, /* dst_mask */ | |
1239 | FALSE), /* pcrel_offset */ | |
1240 | ||
1241 | /* The high order 16 bits of the result of the addend minus the address, | |
1242 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1243 | is negative. */ | |
1244 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1245 | 16, /* rightshift */ | |
1246 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1247 | 16, /* bitsize */ | |
1248 | FALSE, /* pc_relative */ | |
1249 | 0, /* bitpos */ | |
1250 | complain_overflow_dont, /* complain_on_overflow */ | |
25dbc73a AM |
1251 | ppc_elf_addr16_ha_reloc, /* special_function */ |
1252 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1253 | FALSE, /* partial_inplace */ | |
1254 | 0, /* src_mask */ | |
1255 | 0xffff, /* dst_mask */ | |
1256 | FALSE), /* pcrel_offset */ | |
1257 | ||
1258 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1259 | address in the .sdata section, and returning the offset from | |
1260 | _SDA_BASE_ for that relocation. */ | |
1261 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1262 | 0, /* rightshift */ | |
1263 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1264 | 16, /* bitsize */ | |
1265 | FALSE, /* pc_relative */ | |
1266 | 0, /* bitpos */ | |
1267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1268 | bfd_elf_generic_reloc, /* special_function */ | |
1269 | "R_PPC_EMB_SDAI16", /* name */ | |
1270 | FALSE, /* partial_inplace */ | |
1271 | 0, /* src_mask */ | |
1272 | 0xffff, /* dst_mask */ | |
1273 | FALSE), /* pcrel_offset */ | |
1274 | ||
1275 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1276 | address in the .sdata2 section, and returning the offset from | |
1277 | _SDA2_BASE_ for that relocation. */ | |
1278 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1279 | 0, /* rightshift */ | |
1280 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1281 | 16, /* bitsize */ | |
1282 | FALSE, /* pc_relative */ | |
1283 | 0, /* bitpos */ | |
1284 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1285 | bfd_elf_generic_reloc, /* special_function */ | |
1286 | "R_PPC_EMB_SDA2I16", /* name */ | |
1287 | FALSE, /* partial_inplace */ | |
1288 | 0, /* src_mask */ | |
1289 | 0xffff, /* dst_mask */ | |
1290 | FALSE), /* pcrel_offset */ | |
1291 | ||
1292 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1293 | small data items. */ | |
1294 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1295 | 0, /* rightshift */ | |
1296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1297 | 16, /* bitsize */ | |
1298 | FALSE, /* pc_relative */ | |
1299 | 0, /* bitpos */ | |
1300 | complain_overflow_signed, /* complain_on_overflow */ | |
1301 | bfd_elf_generic_reloc, /* special_function */ | |
1302 | "R_PPC_EMB_SDA2REL", /* name */ | |
1303 | FALSE, /* partial_inplace */ | |
1304 | 0, /* src_mask */ | |
1305 | 0xffff, /* dst_mask */ | |
1306 | FALSE), /* pcrel_offset */ | |
1307 | ||
1308 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1309 | signed offset from the appropriate base, and filling in the register | |
1310 | field with the appropriate register (0, 2, or 13). */ | |
1311 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1312 | 0, /* rightshift */ | |
1313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 16, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 0, /* bitpos */ | |
1317 | complain_overflow_signed, /* complain_on_overflow */ | |
1318 | bfd_elf_generic_reloc, /* special_function */ | |
1319 | "R_PPC_EMB_SDA21", /* name */ | |
1320 | FALSE, /* partial_inplace */ | |
1321 | 0, /* src_mask */ | |
1322 | 0xffff, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
1325 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1326 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1327 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1328 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1329 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1330 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1331 | ||
1332 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1333 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1334 | register field with the appropriate register (0, 2, or 13). */ | |
1335 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1336 | 0, /* rightshift */ | |
1337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1338 | 16, /* bitsize */ | |
1339 | TRUE, /* pc_relative */ | |
1340 | 0, /* bitpos */ | |
1341 | complain_overflow_signed, /* complain_on_overflow */ | |
1342 | bfd_elf_generic_reloc, /* special_function */ | |
1343 | "R_PPC_EMB_RELSDA", /* name */ | |
1344 | FALSE, /* partial_inplace */ | |
1345 | 0, /* src_mask */ | |
1346 | 0xffff, /* dst_mask */ | |
1347 | FALSE), /* pcrel_offset */ | |
1348 | ||
d7128ce4 AM |
1349 | /* A 16 bit relative relocation. */ |
1350 | HOWTO (R_PPC_REL16, /* type */ | |
1351 | 0, /* rightshift */ | |
1352 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1353 | 16, /* bitsize */ | |
1354 | TRUE, /* pc_relative */ | |
1355 | 0, /* bitpos */ | |
1356 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1357 | bfd_elf_generic_reloc, /* special_function */ | |
1358 | "R_PPC_REL16", /* name */ | |
1359 | FALSE, /* partial_inplace */ | |
1360 | 0, /* src_mask */ | |
1361 | 0xffff, /* dst_mask */ | |
1362 | TRUE), /* pcrel_offset */ | |
1363 | ||
1364 | /* A 16 bit relative relocation without overflow. */ | |
1365 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1366 | 0, /* rightshift */ | |
1367 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 16, /* bitsize */ | |
1369 | TRUE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont,/* complain_on_overflow */ | |
1372 | bfd_elf_generic_reloc, /* special_function */ | |
1373 | "R_PPC_REL16_LO", /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | TRUE), /* pcrel_offset */ | |
1378 | ||
1379 | /* The high order 16 bits of a relative address. */ | |
1380 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1381 | 16, /* rightshift */ | |
1382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1383 | 16, /* bitsize */ | |
1384 | TRUE, /* pc_relative */ | |
1385 | 0, /* bitpos */ | |
1386 | complain_overflow_dont, /* complain_on_overflow */ | |
1387 | bfd_elf_generic_reloc, /* special_function */ | |
1388 | "R_PPC_REL16_HI", /* name */ | |
1389 | FALSE, /* partial_inplace */ | |
1390 | 0, /* src_mask */ | |
1391 | 0xffff, /* dst_mask */ | |
1392 | TRUE), /* pcrel_offset */ | |
1393 | ||
1394 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1395 | the low 16 bits, treated as a signed number, is negative. */ | |
1396 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1397 | 16, /* rightshift */ | |
1398 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1399 | 16, /* bitsize */ | |
1400 | TRUE, /* pc_relative */ | |
1401 | 0, /* bitpos */ | |
1402 | complain_overflow_dont, /* complain_on_overflow */ | |
1403 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1404 | "R_PPC_REL16_HA", /* name */ | |
1405 | FALSE, /* partial_inplace */ | |
1406 | 0, /* src_mask */ | |
1407 | 0xffff, /* dst_mask */ | |
1408 | TRUE), /* pcrel_offset */ | |
1409 | ||
25dbc73a AM |
1410 | /* GNU extension to record C++ vtable hierarchy. */ |
1411 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1412 | 0, /* rightshift */ | |
1413 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1414 | 0, /* bitsize */ | |
1415 | FALSE, /* pc_relative */ | |
1416 | 0, /* bitpos */ | |
1417 | complain_overflow_dont, /* complain_on_overflow */ | |
1418 | NULL, /* special_function */ | |
1419 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1420 | FALSE, /* partial_inplace */ | |
1421 | 0, /* src_mask */ | |
1422 | 0, /* dst_mask */ | |
1423 | FALSE), /* pcrel_offset */ | |
1424 | ||
1425 | /* GNU extension to record C++ vtable member usage. */ | |
1426 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1427 | 0, /* rightshift */ | |
1428 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1429 | 0, /* bitsize */ | |
1430 | FALSE, /* pc_relative */ | |
1431 | 0, /* bitpos */ | |
1432 | complain_overflow_dont, /* complain_on_overflow */ | |
1433 | NULL, /* special_function */ | |
1434 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1435 | FALSE, /* partial_inplace */ |
1436 | 0, /* src_mask */ | |
25dbc73a | 1437 | 0, /* dst_mask */ |
7619e7c7 AM |
1438 | FALSE), /* pcrel_offset */ |
1439 | ||
25dbc73a AM |
1440 | /* Phony reloc to handle AIX style TOC entries. */ |
1441 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1442 | 0, /* rightshift */ |
1443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1444 | 16, /* bitsize */ | |
1445 | FALSE, /* pc_relative */ | |
1446 | 0, /* bitpos */ | |
25dbc73a | 1447 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1448 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1449 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1450 | FALSE, /* partial_inplace */ |
1451 | 0, /* src_mask */ | |
1452 | 0xffff, /* dst_mask */ | |
1453 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1454 | }; |
1455 | \f | |
1456 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1457 | ||
1458 | static void | |
1459 | ppc_elf_howto_init (void) | |
1460 | { | |
1461 | unsigned int i, type; | |
1462 | ||
1463 | for (i = 0; | |
1464 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1465 | i++) | |
1466 | { | |
1467 | type = ppc_elf_howto_raw[i].type; | |
1468 | if (type >= (sizeof (ppc_elf_howto_table) | |
1469 | / sizeof (ppc_elf_howto_table[0]))) | |
1470 | abort (); | |
1471 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | static reloc_howto_type * | |
1476 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1477 | bfd_reloc_code_real_type code) | |
1478 | { | |
1479 | enum elf_ppc_reloc_type r; | |
1480 | ||
1481 | /* Initialize howto table if not already done. */ | |
1482 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1483 | ppc_elf_howto_init (); | |
1484 | ||
1485 | switch (code) | |
1486 | { | |
1487 | default: | |
1488 | return NULL; | |
1489 | ||
1490 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1491 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1492 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1493 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
1494 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
1495 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1496 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1497 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1498 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1499 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1500 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1501 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1502 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1503 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1504 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
1505 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
1506 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1507 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1508 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1509 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1510 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1511 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1512 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1513 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1514 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1515 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
1516 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1517 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1518 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1519 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
1520 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
1521 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1522 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1523 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1524 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
1525 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
1526 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; | |
1527 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
1528 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
1529 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1530 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1531 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1532 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
1533 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
1534 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1535 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1536 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1537 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1538 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1539 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1540 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1541 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1542 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1543 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1544 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1545 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1546 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1547 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1548 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1549 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1550 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1551 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1552 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1553 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1554 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1555 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1556 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1557 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1558 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1559 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1560 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1561 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1562 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1563 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1564 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1565 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1566 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1567 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1568 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
d7128ce4 AM |
1569 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1570 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1571 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1572 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
25dbc73a AM |
1573 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1574 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1575 | } | |
1576 | ||
1577 | return ppc_elf_howto_table[r]; | |
1578 | }; | |
1579 | ||
1580 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1581 | ||
1582 | static void | |
1583 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1584 | arelent *cache_ptr, | |
1585 | Elf_Internal_Rela *dst) | |
1586 | { | |
1587 | /* Initialize howto table if not already done. */ | |
1588 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1589 | ppc_elf_howto_init (); | |
1590 | ||
1591 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1592 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1593 | } | |
1594 | ||
d7128ce4 | 1595 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
1596 | |
1597 | static bfd_reloc_status_type | |
1598 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
1599 | arelent *reloc_entry, | |
1600 | asymbol *symbol, | |
1601 | void *data ATTRIBUTE_UNUSED, | |
1602 | asection *input_section, | |
1603 | bfd *output_bfd, | |
1604 | char **error_message ATTRIBUTE_UNUSED) | |
1605 | { | |
1606 | bfd_vma relocation; | |
1607 | ||
1608 | if (output_bfd != NULL) | |
1609 | { | |
1610 | reloc_entry->address += input_section->output_offset; | |
1611 | return bfd_reloc_ok; | |
1612 | } | |
1613 | ||
1614 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
1615 | return bfd_reloc_outofrange; | |
1616 | ||
1617 | if (bfd_is_com_section (symbol->section)) | |
1618 | relocation = 0; | |
1619 | else | |
1620 | relocation = symbol->value; | |
1621 | ||
1622 | relocation += symbol->section->output_section->vma; | |
1623 | relocation += symbol->section->output_offset; | |
1624 | relocation += reloc_entry->addend; | |
d7128ce4 AM |
1625 | if (reloc_entry->howto->pc_relative) |
1626 | relocation -= reloc_entry->address; | |
25dbc73a AM |
1627 | |
1628 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1629 | ||
1630 | return bfd_reloc_continue; | |
1631 | } | |
1632 | ||
1633 | static bfd_reloc_status_type | |
1634 | ppc_elf_unhandled_reloc (bfd *abfd, | |
1635 | arelent *reloc_entry, | |
1636 | asymbol *symbol, | |
1637 | void *data, | |
1638 | asection *input_section, | |
1639 | bfd *output_bfd, | |
1640 | char **error_message) | |
1641 | { | |
1642 | /* If this is a relocatable link (output_bfd test tells us), just | |
1643 | call the generic function. Any adjustment will be done at final | |
1644 | link time. */ | |
1645 | if (output_bfd != NULL) | |
1646 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1647 | input_section, output_bfd, error_message); | |
1648 | ||
1649 | if (error_message != NULL) | |
1650 | { | |
1651 | static char buf[60]; | |
1652 | sprintf (buf, _("generic linker can't handle %s"), | |
1653 | reloc_entry->howto->name); | |
1654 | *error_message = buf; | |
1655 | } | |
1656 | return bfd_reloc_dangerous; | |
1657 | } | |
1658 | \f | |
1659 | /* Sections created by the linker. */ | |
1660 | ||
1661 | typedef struct elf_linker_section | |
1662 | { | |
c9a2f333 | 1663 | /* Pointer to the bfd section. */ |
25dbc73a | 1664 | asection *section; |
c9a2f333 AM |
1665 | /* Section name. */ |
1666 | const char *name; | |
1667 | /* Associated bss section name. */ | |
1668 | const char *bss_name; | |
1669 | /* Associated symbol name. */ | |
1670 | const char *sym_name; | |
046183de AM |
1671 | /* Associated symbol. */ |
1672 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1673 | } elf_linker_section_t; |
1674 | ||
1675 | /* Linked list of allocated pointer entries. This hangs off of the | |
1676 | symbol lists, and provides allows us to return different pointers, | |
1677 | based on different addend's. */ | |
1678 | ||
1679 | typedef struct elf_linker_section_pointers | |
1680 | { | |
1681 | /* next allocated pointer for this symbol */ | |
1682 | struct elf_linker_section_pointers *next; | |
1683 | /* offset of pointer from beginning of section */ | |
1684 | bfd_vma offset; | |
1685 | /* addend used */ | |
1686 | bfd_vma addend; | |
1687 | /* which linker section this is */ | |
1688 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1689 | } elf_linker_section_pointers_t; |
1690 | ||
1691 | struct ppc_elf_obj_tdata | |
1692 | { | |
1693 | struct elf_obj_tdata elf; | |
1694 | ||
1695 | /* A mapping from local symbols to offsets into the various linker | |
1696 | sections added. This is index by the symbol index. */ | |
1697 | elf_linker_section_pointers_t **linker_section_pointers; | |
1698 | }; | |
1699 | ||
1700 | #define ppc_elf_tdata(bfd) \ | |
1701 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1702 | |
25dbc73a AM |
1703 | #define elf_local_ptr_offsets(bfd) \ |
1704 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1705 | |
25dbc73a | 1706 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1707 | |
25dbc73a AM |
1708 | static bfd_boolean |
1709 | ppc_elf_mkobject (bfd *abfd) | |
1710 | { | |
1711 | bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata); | |
1712 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1713 | if (abfd->tdata.any == NULL) | |
1714 | return FALSE; | |
1715 | return TRUE; | |
1716 | } | |
7619e7c7 | 1717 | |
25dbc73a AM |
1718 | /* Fix bad default arch selected for a 32 bit input bfd when the |
1719 | default is 64 bit. */ | |
7619e7c7 | 1720 | |
25dbc73a AM |
1721 | static bfd_boolean |
1722 | ppc_elf_object_p (bfd *abfd) | |
1723 | { | |
1724 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
1725 | { | |
1726 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1727 | |
25dbc73a AM |
1728 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1729 | { | |
1730 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1731 | abfd->arch_info = abfd->arch_info->next; | |
1732 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1733 | } | |
1734 | } | |
1735 | return TRUE; | |
1736 | } | |
7619e7c7 | 1737 | |
25dbc73a | 1738 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1739 | |
25dbc73a AM |
1740 | static bfd_boolean |
1741 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1742 | { | |
1743 | BFD_ASSERT (!elf_flags_init (abfd) | |
1744 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1745 | |
25dbc73a AM |
1746 | elf_elfheader (abfd)->e_flags = flags; |
1747 | elf_flags_init (abfd) = TRUE; | |
1748 | return TRUE; | |
1749 | } | |
1750 | ||
25dbc73a | 1751 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1752 | |
b34976b6 | 1753 | static bfd_boolean |
25dbc73a | 1754 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1755 | { |
25dbc73a AM |
1756 | int offset; |
1757 | unsigned int size; | |
252b5132 | 1758 | |
25dbc73a AM |
1759 | switch (note->descsz) |
1760 | { | |
1761 | default: | |
1762 | return FALSE; | |
252b5132 | 1763 | |
25dbc73a AM |
1764 | case 268: /* Linux/PPC. */ |
1765 | /* pr_cursig */ | |
1766 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
deaaf2f3 | 1767 | |
25dbc73a AM |
1768 | /* pr_pid */ |
1769 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9abc968f | 1770 | |
25dbc73a AM |
1771 | /* pr_reg */ |
1772 | offset = 72; | |
1773 | size = 192; | |
deaaf2f3 | 1774 | |
25dbc73a AM |
1775 | break; |
1776 | } | |
deaaf2f3 | 1777 | |
25dbc73a AM |
1778 | /* Make a ".reg/999" section. */ |
1779 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1780 | size, note->descpos + offset); | |
1781 | } | |
252b5132 | 1782 | |
25dbc73a AM |
1783 | static bfd_boolean |
1784 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1785 | { | |
1786 | switch (note->descsz) | |
deaaf2f3 | 1787 | { |
25dbc73a AM |
1788 | default: |
1789 | return FALSE; | |
deaaf2f3 | 1790 | |
25dbc73a AM |
1791 | case 128: /* Linux/PPC elf_prpsinfo. */ |
1792 | elf_tdata (abfd)->core_program | |
1793 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1794 | elf_tdata (abfd)->core_command | |
1795 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1796 | } | |
9abc968f | 1797 | |
25dbc73a AM |
1798 | /* Note that for some reason, a spurious space is tacked |
1799 | onto the end of the args in some (at least one anyway) | |
1800 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1801 | |
25dbc73a AM |
1802 | { |
1803 | char *command = elf_tdata (abfd)->core_command; | |
1804 | int n = strlen (command); | |
70bccea4 | 1805 | |
25dbc73a AM |
1806 | if (0 < n && command[n - 1] == ' ') |
1807 | command[n - 1] = '\0'; | |
1808 | } | |
deaaf2f3 | 1809 | |
25dbc73a AM |
1810 | return TRUE; |
1811 | } | |
deaaf2f3 | 1812 | |
25dbc73a AM |
1813 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1814 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1815 | |
25dbc73a AM |
1816 | static bfd_vma |
1817 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1818 | const asection *plt ATTRIBUTE_UNUSED, | |
1819 | const arelent *rel) | |
1820 | { | |
1821 | return rel->address; | |
1822 | } | |
deaaf2f3 | 1823 | |
25dbc73a | 1824 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1825 | is called when bfd_section_from_shdr finds a section with an unknown |
1826 | type. */ | |
deaaf2f3 | 1827 | |
25dbc73a | 1828 | static bfd_boolean |
6dc132d9 L |
1829 | ppc_elf_section_from_shdr (bfd *abfd, |
1830 | Elf_Internal_Shdr *hdr, | |
1831 | const char *name, | |
1832 | int shindex) | |
25dbc73a AM |
1833 | { |
1834 | asection *newsect; | |
1835 | flagword flags; | |
d1c6de6f | 1836 | |
6dc132d9 | 1837 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1838 | return FALSE; |
deaaf2f3 | 1839 | |
25dbc73a AM |
1840 | newsect = hdr->bfd_section; |
1841 | flags = bfd_get_section_flags (abfd, newsect); | |
1842 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1843 | flags |= SEC_EXCLUDE; | |
9abc968f | 1844 | |
25dbc73a AM |
1845 | if (hdr->sh_type == SHT_ORDERED) |
1846 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1847 | |
25dbc73a AM |
1848 | bfd_set_section_flags (abfd, newsect, flags); |
1849 | return TRUE; | |
1850 | } | |
1851 | ||
1852 | /* Set up any other section flags and such that may be necessary. */ | |
1853 | ||
1854 | static bfd_boolean | |
1855 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1856 | Elf_Internal_Shdr *shdr, | |
1857 | asection *asect) | |
1858 | { | |
d30e8e7c | 1859 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
25dbc73a AM |
1860 | shdr->sh_flags |= SHF_EXCLUDE; |
1861 | ||
1862 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1863 | shdr->sh_type = SHT_ORDERED; | |
1864 | ||
1865 | return TRUE; | |
1866 | } | |
1867 | ||
1868 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1869 | need to bump up the number of section headers. */ | |
1870 | ||
1871 | static int | |
1872 | ppc_elf_additional_program_headers (bfd *abfd) | |
1873 | { | |
1874 | asection *s; | |
1875 | int ret = 0; | |
d1c6de6f | 1876 | |
25dbc73a AM |
1877 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1878 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1879 | ++ret; | |
d1c6de6f | 1880 | |
25dbc73a AM |
1881 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1882 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1883 | ++ret; | |
deaaf2f3 | 1884 | |
25dbc73a AM |
1885 | return ret; |
1886 | } | |
deaaf2f3 | 1887 | |
25dbc73a AM |
1888 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1889 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1890 | that the linker doesn't crater when trying to make more than | |
1891 | 2 sections. */ | |
e656e369 | 1892 | |
b35d266b | 1893 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 L |
1894 | { |
1895 | { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
25dbc73a | 1896 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
25dbc73a | 1897 | { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC }, |
551b43fd AM |
1898 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1899 | { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
7f4d3958 | 1900 | { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC }, |
25dbc73a | 1901 | { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 }, |
25dbc73a | 1902 | { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC }, |
551b43fd AM |
1903 | { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC }, |
1904 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1905 | }; |
1906 | ||
551b43fd AM |
1907 | /* This is what we want for new plt/got. */ |
1908 | static struct bfd_elf_special_section ppc_alt_plt = | |
1909 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC }; | |
1910 | ||
1911 | static const struct bfd_elf_special_section * | |
1912 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 1913 | { |
b35d266b | 1914 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
1915 | |
1916 | /* See if this is one of the special sections. */ | |
1917 | if (sec->name == NULL) | |
1918 | return NULL; | |
1919 | ||
1920 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
1921 | sec->use_rela_p); | |
1922 | if (ssect != NULL) | |
1923 | { | |
1924 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
1925 | ssect = &ppc_alt_plt; | |
1926 | return ssect; | |
1927 | } | |
1928 | ||
1929 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
1930 | } | |
25dbc73a AM |
1931 | \f |
1932 | /* Very simple linked list structure for recording apuinfo values. */ | |
1933 | typedef struct apuinfo_list | |
1934 | { | |
1935 | struct apuinfo_list *next; | |
1936 | unsigned long value; | |
1937 | } | |
1938 | apuinfo_list; | |
e656e369 | 1939 | |
25dbc73a | 1940 | static apuinfo_list *head; |
deaaf2f3 | 1941 | |
deaaf2f3 | 1942 | |
25dbc73a AM |
1943 | static void |
1944 | apuinfo_list_init (void) | |
1945 | { | |
1946 | head = NULL; | |
1947 | } | |
9abc968f | 1948 | |
25dbc73a AM |
1949 | static void |
1950 | apuinfo_list_add (unsigned long value) | |
1951 | { | |
1952 | apuinfo_list *entry = head; | |
deaaf2f3 | 1953 | |
25dbc73a AM |
1954 | while (entry != NULL) |
1955 | { | |
1956 | if (entry->value == value) | |
1957 | return; | |
1958 | entry = entry->next; | |
1959 | } | |
b4a38de6 | 1960 | |
25dbc73a AM |
1961 | entry = bfd_malloc (sizeof (* entry)); |
1962 | if (entry == NULL) | |
1963 | return; | |
e656e369 | 1964 | |
25dbc73a AM |
1965 | entry->value = value; |
1966 | entry->next = head; | |
1967 | head = entry; | |
1968 | } | |
9abc968f | 1969 | |
25dbc73a AM |
1970 | static unsigned |
1971 | apuinfo_list_length (void) | |
1972 | { | |
1973 | apuinfo_list *entry; | |
1974 | unsigned long count; | |
9abc968f | 1975 | |
25dbc73a AM |
1976 | for (entry = head, count = 0; |
1977 | entry; | |
1978 | entry = entry->next) | |
1979 | ++ count; | |
e656e369 | 1980 | |
25dbc73a AM |
1981 | return count; |
1982 | } | |
eea6121a | 1983 | |
25dbc73a AM |
1984 | static inline unsigned long |
1985 | apuinfo_list_element (unsigned long number) | |
1986 | { | |
1987 | apuinfo_list * entry; | |
e656e369 | 1988 | |
25dbc73a AM |
1989 | for (entry = head; |
1990 | entry && number --; | |
1991 | entry = entry->next) | |
1992 | ; | |
252b5132 | 1993 | |
25dbc73a AM |
1994 | return entry ? entry->value : 0; |
1995 | } | |
1996 | ||
1997 | static void | |
1998 | apuinfo_list_finish (void) | |
1999 | { | |
2000 | apuinfo_list *entry; | |
2001 | ||
2002 | for (entry = head; entry;) | |
252b5132 | 2003 | { |
25dbc73a AM |
2004 | apuinfo_list *next = entry->next; |
2005 | free (entry); | |
2006 | entry = next; | |
2007 | } | |
9abc968f | 2008 | |
25dbc73a AM |
2009 | head = NULL; |
2010 | } | |
9abc968f | 2011 | |
25dbc73a AM |
2012 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2013 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2014 | |
25dbc73a AM |
2015 | /* Scan the input BFDs and create a linked list of |
2016 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2017 | |
25dbc73a AM |
2018 | static void |
2019 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2020 | { | |
2021 | bfd *ibfd; | |
2022 | asection *asec; | |
2023 | char *buffer; | |
2024 | unsigned num_input_sections; | |
2025 | bfd_size_type output_section_size; | |
2026 | unsigned i; | |
2027 | unsigned num_entries; | |
2028 | unsigned long offset; | |
2029 | unsigned long length; | |
2030 | const char *error_message = NULL; | |
9abc968f | 2031 | |
25dbc73a AM |
2032 | if (link_info == NULL) |
2033 | return; | |
9abc968f | 2034 | |
25dbc73a AM |
2035 | /* Scan the input bfds, looking for apuinfo sections. */ |
2036 | num_input_sections = 0; | |
2037 | output_section_size = 0; | |
252b5132 | 2038 | |
25dbc73a | 2039 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) |
252b5132 | 2040 | { |
25dbc73a AM |
2041 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2042 | if (asec) | |
252b5132 | 2043 | { |
25dbc73a AM |
2044 | ++ num_input_sections; |
2045 | output_section_size += asec->size; | |
252b5132 | 2046 | } |
252b5132 RH |
2047 | } |
2048 | ||
25dbc73a AM |
2049 | /* We need at least one input sections |
2050 | in order to make merging worthwhile. */ | |
2051 | if (num_input_sections < 1) | |
2052 | return; | |
deaaf2f3 | 2053 | |
25dbc73a AM |
2054 | /* Just make sure that the output section exists as well. */ |
2055 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2056 | if (asec == NULL) | |
2057 | return; | |
252b5132 | 2058 | |
25dbc73a AM |
2059 | /* Allocate a buffer for the contents of the input sections. */ |
2060 | buffer = bfd_malloc (output_section_size); | |
2061 | if (buffer == NULL) | |
2062 | return; | |
252b5132 | 2063 | |
25dbc73a AM |
2064 | offset = 0; |
2065 | apuinfo_list_init (); | |
252b5132 | 2066 | |
25dbc73a AM |
2067 | /* Read in the input sections contents. */ |
2068 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
252b5132 | 2069 | { |
25dbc73a AM |
2070 | unsigned long datum; |
2071 | char *ptr; | |
252b5132 | 2072 | |
25dbc73a AM |
2073 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2074 | if (asec == NULL) | |
2075 | continue; | |
252b5132 | 2076 | |
25dbc73a AM |
2077 | length = asec->size; |
2078 | if (length < 24) | |
2079 | { | |
2080 | error_message = _("corrupt or empty %s section in %B"); | |
2081 | goto fail; | |
2082 | } | |
252b5132 | 2083 | |
25dbc73a AM |
2084 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
2085 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
2086 | { | |
2087 | error_message = _("unable to read in %s section from %B"); | |
2088 | goto fail; | |
2089 | } | |
252b5132 | 2090 | |
25dbc73a AM |
2091 | /* Process the contents of the section. */ |
2092 | ptr = buffer + offset; | |
2093 | error_message = _("corrupt %s section in %B"); | |
252b5132 | 2094 | |
25dbc73a AM |
2095 | /* Verify the contents of the header. Note - we have to |
2096 | extract the values this way in order to allow for a | |
2097 | host whose endian-ness is different from the target. */ | |
2098 | datum = bfd_get_32 (ibfd, ptr); | |
2099 | if (datum != sizeof APUINFO_LABEL) | |
2100 | goto fail; | |
252b5132 | 2101 | |
25dbc73a AM |
2102 | datum = bfd_get_32 (ibfd, ptr + 8); |
2103 | if (datum != 0x2) | |
2104 | goto fail; | |
252b5132 | 2105 | |
25dbc73a AM |
2106 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) |
2107 | goto fail; | |
252b5132 | 2108 | |
25dbc73a AM |
2109 | /* Get the number of bytes used for apuinfo entries. */ |
2110 | datum = bfd_get_32 (ibfd, ptr + 4); | |
2111 | if (datum + 20 != length) | |
2112 | goto fail; | |
2113 | ||
2114 | /* Make sure that we do not run off the end of the section. */ | |
2115 | if (offset + length > output_section_size) | |
2116 | goto fail; | |
2117 | ||
2118 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
2119 | for (i = 0; i < datum; i += 4) | |
2120 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
2121 | ||
2122 | /* Update the offset. */ | |
2123 | offset += length; | |
252b5132 RH |
2124 | } |
2125 | ||
25dbc73a | 2126 | error_message = NULL; |
252b5132 | 2127 | |
25dbc73a AM |
2128 | /* Compute the size of the output section. */ |
2129 | num_entries = apuinfo_list_length (); | |
2130 | output_section_size = 20 + num_entries * 4; | |
252b5132 | 2131 | |
25dbc73a AM |
2132 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2133 | ||
2134 | if (! bfd_set_section_size (abfd, asec, output_section_size)) | |
2135 | ibfd = abfd, | |
2136 | error_message = _("warning: unable to set size of %s section in %B"); | |
2137 | ||
2138 | fail: | |
2139 | free (buffer); | |
2140 | ||
2141 | if (error_message) | |
2142 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2143 | } | |
252b5132 | 2144 | |
25dbc73a AM |
2145 | /* Prevent the output section from accumulating the input sections' |
2146 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2147 | |
25dbc73a AM |
2148 | static bfd_boolean |
2149 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
2150 | asection *asec, | |
2151 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2152 | { | |
2153 | return (apuinfo_list_length () | |
2154 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
252b5132 RH |
2155 | } |
2156 | ||
25dbc73a AM |
2157 | /* Finally we can generate the output section. */ |
2158 | ||
2159 | static void | |
2160 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2161 | { |
25dbc73a AM |
2162 | bfd_byte *buffer; |
2163 | asection *asec; | |
2164 | unsigned i; | |
2165 | unsigned num_entries; | |
2166 | bfd_size_type length; | |
7619e7c7 | 2167 | |
25dbc73a AM |
2168 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2169 | if (asec == NULL) | |
2170 | return; | |
2171 | ||
2172 | if (apuinfo_list_length () == 0) | |
2173 | return; | |
2174 | ||
2175 | length = asec->size; | |
2176 | if (length < 20) | |
2177 | return; | |
2178 | ||
2179 | buffer = bfd_malloc (length); | |
2180 | if (buffer == NULL) | |
7619e7c7 | 2181 | { |
25dbc73a AM |
2182 | (*_bfd_error_handler) |
2183 | (_("failed to allocate space for new APUinfo section.")); | |
2184 | return; | |
7619e7c7 | 2185 | } |
7619e7c7 | 2186 | |
25dbc73a AM |
2187 | /* Create the apuinfo header. */ |
2188 | num_entries = apuinfo_list_length (); | |
2189 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2190 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2191 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2192 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2193 | |
25dbc73a AM |
2194 | length = 20; |
2195 | for (i = 0; i < num_entries; i++) | |
feee612b | 2196 | { |
25dbc73a AM |
2197 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2198 | length += 4; | |
feee612b | 2199 | } |
feee612b | 2200 | |
25dbc73a AM |
2201 | if (length != asec->size) |
2202 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2203 | |
25dbc73a AM |
2204 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2205 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2206 | |
25dbc73a AM |
2207 | free (buffer); |
2208 | ||
2209 | apuinfo_list_finish (); | |
252b5132 | 2210 | } |
25dbc73a AM |
2211 | \f |
2212 | /* The following functions are specific to the ELF linker, while | |
2213 | functions above are used generally. They appear in this file more | |
2214 | or less in the order in which they are called. eg. | |
2215 | ppc_elf_check_relocs is called early in the link process, | |
2216 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2217 | called. */ | |
252b5132 | 2218 | |
25dbc73a AM |
2219 | /* The PPC linker needs to keep track of the number of relocs that it |
2220 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2221 | This is so that it can later discard them if they are found to be | |
2222 | unnecessary. We store the information in a field extending the | |
2223 | regular ELF linker hash table. */ | |
ae9a127f | 2224 | |
25dbc73a | 2225 | struct ppc_elf_dyn_relocs |
252b5132 | 2226 | { |
25dbc73a | 2227 | struct ppc_elf_dyn_relocs *next; |
252b5132 | 2228 | |
25dbc73a AM |
2229 | /* The input section of the reloc. */ |
2230 | asection *sec; | |
252b5132 | 2231 | |
25dbc73a AM |
2232 | /* Total number of relocs copied for the input section. */ |
2233 | bfd_size_type count; | |
252b5132 | 2234 | |
25dbc73a AM |
2235 | /* Number of pc-relative relocs copied for the input section. */ |
2236 | bfd_size_type pc_count; | |
2237 | }; | |
252b5132 | 2238 | |
a6aa5195 AM |
2239 | /* Track PLT entries needed for a given symbol. We might need more |
2240 | than one glink entry per symbol. */ | |
2241 | struct plt_entry | |
2242 | { | |
2243 | struct plt_entry *next; | |
2244 | ||
2245 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2246 | This field stores the offset into .got2 used to initialise the | |
2247 | GOT pointer reg. It will always be at least 32768 (and for | |
2248 | current gcc this is the only offset used). */ | |
2249 | bfd_vma addend; | |
2250 | ||
2251 | /* The .got2 section. */ | |
2252 | asection *sec; | |
2253 | ||
2254 | /* PLT refcount or offset. */ | |
2255 | union | |
2256 | { | |
2257 | bfd_signed_vma refcount; | |
2258 | bfd_vma offset; | |
2259 | } plt; | |
2260 | ||
2261 | /* .glink stub offset. */ | |
2262 | bfd_vma glink_offset; | |
2263 | }; | |
2264 | ||
25dbc73a AM |
2265 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2266 | selects those that must be copied when linking a shared library, | |
2267 | even when the symbol is local. */ | |
252b5132 | 2268 | |
25dbc73a AM |
2269 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
2270 | ((RTYPE) != R_PPC_REL24 \ | |
2271 | && (RTYPE) != R_PPC_REL14 \ | |
2272 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2273 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2274 | && (RTYPE) != R_PPC_REL32) | |
252b5132 | 2275 | |
25dbc73a AM |
2276 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2277 | copying dynamic variables from a shared lib into an app's dynbss | |
2278 | section, and instead use a dynamic relocation to point into the | |
2279 | shared lib. */ | |
2280 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2281 | |
25dbc73a | 2282 | /* PPC ELF linker hash entry. */ |
252b5132 | 2283 | |
25dbc73a AM |
2284 | struct ppc_elf_link_hash_entry |
2285 | { | |
2286 | struct elf_link_hash_entry elf; | |
252b5132 | 2287 | |
25dbc73a AM |
2288 | /* If this symbol is used in the linker created sections, the processor |
2289 | specific backend uses this field to map the field into the offset | |
2290 | from the beginning of the section. */ | |
2291 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2292 | |
25dbc73a AM |
2293 | /* Track dynamic relocs copied for this symbol. */ |
2294 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
252b5132 | 2295 | |
25dbc73a AM |
2296 | /* Contexts in which symbol is used in the GOT (or TOC). |
2297 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
2298 | corresponding relocs are encountered during check_relocs. | |
2299 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2300 | indicate the corresponding GOT entry type is not needed. */ | |
2301 | #define TLS_GD 1 /* GD reloc. */ | |
2302 | #define TLS_LD 2 /* LD reloc. */ | |
2303 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2304 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2305 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2306 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
2307 | char tls_mask; | |
4dc4a9a5 DJ |
2308 | |
2309 | /* Nonzero if we have seen a small data relocation referring to this | |
2310 | symbol. */ | |
2311 | unsigned char has_sda_refs; | |
25dbc73a | 2312 | }; |
252b5132 | 2313 | |
25dbc73a AM |
2314 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2315 | ||
2316 | /* PPC ELF linker hash table. */ | |
2317 | ||
2318 | struct ppc_elf_link_hash_table | |
2319 | { | |
2320 | struct elf_link_hash_table elf; | |
2321 | ||
2322 | /* Short-cuts to get to dynamic linker sections. */ | |
2323 | asection *got; | |
2324 | asection *relgot; | |
d7128ce4 | 2325 | asection *glink; |
25dbc73a AM |
2326 | asection *plt; |
2327 | asection *relplt; | |
2328 | asection *dynbss; | |
2329 | asection *relbss; | |
2330 | asection *dynsbss; | |
2331 | asection *relsbss; | |
c9a2f333 | 2332 | elf_linker_section_t sdata[2]; |
25dbc73a AM |
2333 | asection *sbss; |
2334 | ||
2335 | /* Shortcut to .__tls_get_addr. */ | |
2336 | struct elf_link_hash_entry *tls_get_addr; | |
252b5132 | 2337 | |
25dbc73a AM |
2338 | /* TLS local dynamic got entry handling. */ |
2339 | union { | |
2340 | bfd_signed_vma refcount; | |
2341 | bfd_vma offset; | |
2342 | } tlsld_got; | |
252b5132 | 2343 | |
d7128ce4 AM |
2344 | /* Offset of PltResolve function in glink. */ |
2345 | bfd_vma glink_pltresolve; | |
2346 | ||
3b36f7e6 AM |
2347 | /* Size of reserved GOT entries. */ |
2348 | unsigned int got_header_size; | |
2349 | /* Non-zero if allocating the header left a gap. */ | |
2350 | unsigned int got_gap; | |
2351 | ||
d7128ce4 AM |
2352 | /* Whether to use new plt/got layout or not. */ |
2353 | unsigned int new_plt:1; | |
2354 | unsigned int old_plt:1; | |
2355 | ||
0ba07910 AM |
2356 | /* Set if we should emit symbols for stubs. */ |
2357 | unsigned int emit_stub_syms:1; | |
2358 | ||
25dbc73a AM |
2359 | /* Small local sym to section mapping cache. */ |
2360 | struct sym_sec_cache sym_sec; | |
9d8504b1 PB |
2361 | |
2362 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ | |
2363 | asection *srelplt2; | |
2364 | ||
2365 | /* The .got.plt section (VxWorks only)*/ | |
2366 | asection *sgotplt; | |
2367 | ||
2368 | /* Short-cuts to frequently used symbols on VxWorks targets. */ | |
636ce3f5 | 2369 | struct elf_link_hash_entry *hplt; |
9d8504b1 PB |
2370 | |
2371 | /* True if the target system is VxWorks. */ | |
2372 | int is_vxworks; | |
2373 | ||
2374 | /* The size of PLT entries. */ | |
2375 | int plt_entry_size; | |
2376 | /* The distance between adjacent PLT slots. */ | |
2377 | int plt_slot_size; | |
2378 | /* The size of the first PLT entry. */ | |
2379 | int plt_initial_entry_size; | |
25dbc73a | 2380 | }; |
252b5132 | 2381 | |
25dbc73a | 2382 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2383 | |
25dbc73a AM |
2384 | #define ppc_elf_hash_table(p) \ |
2385 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
252b5132 | 2386 | |
25dbc73a | 2387 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2388 | |
25dbc73a AM |
2389 | static struct bfd_hash_entry * |
2390 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2391 | struct bfd_hash_table *table, | |
2392 | const char *string) | |
252b5132 | 2393 | { |
25dbc73a AM |
2394 | /* Allocate the structure if it has not already been allocated by a |
2395 | subclass. */ | |
2396 | if (entry == NULL) | |
2397 | { | |
2398 | entry = bfd_hash_allocate (table, | |
2399 | sizeof (struct ppc_elf_link_hash_entry)); | |
2400 | if (entry == NULL) | |
2401 | return entry; | |
2402 | } | |
252b5132 | 2403 | |
25dbc73a AM |
2404 | /* Call the allocation method of the superclass. */ |
2405 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2406 | if (entry != NULL) | |
2407 | { | |
2408 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2409 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2410 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
2411 | } | |
252b5132 | 2412 | |
25dbc73a | 2413 | return entry; |
252b5132 | 2414 | } |
3dab13f6 | 2415 | |
25dbc73a | 2416 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2417 | |
25dbc73a AM |
2418 | static struct bfd_link_hash_table * |
2419 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2420 | { |
25dbc73a | 2421 | struct ppc_elf_link_hash_table *ret; |
3dab13f6 | 2422 | |
25dbc73a AM |
2423 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2424 | if (ret == NULL) | |
2425 | return NULL; | |
3dab13f6 | 2426 | |
25dbc73a AM |
2427 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2428 | ppc_elf_link_hash_newfunc)) | |
3dab13f6 | 2429 | { |
25dbc73a AM |
2430 | free (ret); |
2431 | return NULL; | |
2432 | } | |
58111eb7 | 2433 | |
a6aa5195 AM |
2434 | ret->elf.init_plt_refcount.refcount = 0; |
2435 | ret->elf.init_plt_refcount.glist = NULL; | |
2436 | ret->elf.init_plt_offset.offset = 0; | |
2437 | ret->elf.init_plt_offset.glist = NULL; | |
2438 | ||
c9a2f333 AM |
2439 | ret->sdata[0].name = ".sdata"; |
2440 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2441 | ret->sdata[0].bss_name = ".sbss"; | |
2442 | ||
2443 | ret->sdata[1].name = ".sdata2"; | |
2444 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2445 | ret->sdata[1].bss_name = ".sbss2"; | |
2446 | ||
9d8504b1 PB |
2447 | ret->plt_entry_size = 12; |
2448 | ret->plt_slot_size = 8; | |
2449 | ret->plt_initial_entry_size = 72; | |
2450 | ||
2451 | ret->is_vxworks = 0; | |
2452 | ||
25dbc73a AM |
2453 | return &ret->elf.root; |
2454 | } | |
3dab13f6 | 2455 | |
9d8504b1 | 2456 | /* Create .got and the related sections. */ |
3dab13f6 | 2457 | |
25dbc73a AM |
2458 | static bfd_boolean |
2459 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2460 | { | |
2461 | struct ppc_elf_link_hash_table *htab; | |
2462 | asection *s; | |
2463 | flagword flags; | |
3dab13f6 | 2464 | |
25dbc73a AM |
2465 | if (!_bfd_elf_create_got_section (abfd, info)) |
2466 | return FALSE; | |
3dab13f6 | 2467 | |
25dbc73a AM |
2468 | htab = ppc_elf_hash_table (info); |
2469 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
2470 | if (s == NULL) | |
2471 | abort (); | |
3dab13f6 | 2472 | |
9d8504b1 PB |
2473 | if (htab->is_vxworks) |
2474 | { | |
2475 | htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt"); | |
2476 | if (!htab->sgotplt) | |
2477 | abort (); | |
2478 | } | |
2479 | else | |
2480 | { | |
2481 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2482 | executable. */ | |
2483 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
2484 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2485 | if (!bfd_set_section_flags (abfd, s, flags)) | |
2486 | return FALSE; | |
2487 | } | |
3dab13f6 | 2488 | |
3b36f7e6 AM |
2489 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2490 | | SEC_LINKER_CREATED | SEC_READONLY); | |
2491 | htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags); | |
25dbc73a | 2492 | if (!htab->relgot |
25dbc73a AM |
2493 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) |
2494 | return FALSE; | |
3dab13f6 | 2495 | |
25dbc73a AM |
2496 | return TRUE; |
2497 | } | |
3dab13f6 | 2498 | |
25dbc73a AM |
2499 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2500 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2501 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2502 | |
25dbc73a AM |
2503 | static bfd_boolean |
2504 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2505 | { | |
2506 | struct ppc_elf_link_hash_table *htab; | |
2507 | asection *s; | |
2508 | flagword flags; | |
3dab13f6 | 2509 | |
25dbc73a | 2510 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2511 | |
25dbc73a AM |
2512 | if (htab->got == NULL |
2513 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
2514 | return FALSE; |
2515 | ||
25dbc73a AM |
2516 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2517 | return FALSE; | |
3dab13f6 | 2518 | |
d7128ce4 AM |
2519 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2520 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2521 | ||
2522 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE); | |
2523 | htab->glink = s; | |
2524 | if (s == NULL | |
2525 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2526 | return FALSE; | |
3dab13f6 | 2527 | |
25dbc73a | 2528 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
3b36f7e6 AM |
2529 | s = bfd_make_section_with_flags (abfd, ".dynsbss", |
2530 | SEC_ALLOC | SEC_LINKER_CREATED); | |
2531 | htab->dynsbss = s; | |
3496cb2a | 2532 | if (s == NULL) |
25dbc73a | 2533 | return FALSE; |
3dab13f6 | 2534 | |
25dbc73a AM |
2535 | if (! info->shared) |
2536 | { | |
2537 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
d7128ce4 | 2538 | s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2539 | htab->relsbss = s; |
25dbc73a | 2540 | if (s == NULL |
25dbc73a AM |
2541 | || ! bfd_set_section_alignment (abfd, s, 2)) |
2542 | return FALSE; | |
2543 | } | |
3dab13f6 | 2544 | |
9d8504b1 PB |
2545 | /* Create the section for VxWorks static plt relocations. */ |
2546 | if (htab->is_vxworks && !info->shared) | |
2547 | { | |
2548 | s = bfd_make_section (abfd, ".rela.plt.unloaded"); | |
2549 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY | |
2550 | | SEC_LINKER_CREATED); | |
2551 | if (s == NULL | |
2552 | || ! bfd_set_section_flags (abfd, s, flags) | |
2553 | || ! bfd_set_section_alignment (abfd, s, | |
2554 | get_elf_backend_data (abfd)->s->log_file_align)) | |
2555 | return FALSE; | |
2556 | htab->srelplt2 = s; | |
2557 | } | |
2558 | ||
25dbc73a AM |
2559 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2560 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
2561 | if (s == NULL) | |
2562 | abort (); | |
3dab13f6 | 2563 | |
3b36f7e6 | 2564 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
25dbc73a AM |
2565 | return bfd_set_section_flags (abfd, s, flags); |
2566 | } | |
3dab13f6 | 2567 | |
25dbc73a | 2568 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2569 | |
25dbc73a | 2570 | static void |
fcfa13d2 | 2571 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2572 | struct elf_link_hash_entry *dir, |
2573 | struct elf_link_hash_entry *ind) | |
2574 | { | |
2575 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2576 | |
25dbc73a AM |
2577 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2578 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2579 | |
25dbc73a AM |
2580 | if (eind->dyn_relocs != NULL) |
2581 | { | |
2582 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2583 | { |
25dbc73a AM |
2584 | struct ppc_elf_dyn_relocs **pp; |
2585 | struct ppc_elf_dyn_relocs *p; | |
3dab13f6 | 2586 | |
fcfa13d2 | 2587 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
2588 | list. Merge any entries against the same section. */ |
2589 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2590 | { |
25dbc73a AM |
2591 | struct ppc_elf_dyn_relocs *q; |
2592 | ||
2593 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2594 | if (q->sec == p->sec) | |
2595 | { | |
2596 | q->pc_count += p->pc_count; | |
2597 | q->count += p->count; | |
2598 | *pp = p->next; | |
2599 | break; | |
2600 | } | |
2601 | if (q == NULL) | |
2602 | pp = &p->next; | |
3dab13f6 | 2603 | } |
25dbc73a | 2604 | *pp = edir->dyn_relocs; |
3dab13f6 | 2605 | } |
25dbc73a AM |
2606 | |
2607 | edir->dyn_relocs = eind->dyn_relocs; | |
2608 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2609 | } |
3dab13f6 | 2610 | |
25dbc73a | 2611 | edir->tls_mask |= eind->tls_mask; |
4dc4a9a5 | 2612 | edir->has_sda_refs |= eind->has_sda_refs; |
3dab13f6 | 2613 | |
a6aa5195 AM |
2614 | /* If called to transfer flags for a weakdef during processing |
2615 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
2616 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
2617 | if (!(ELIMINATE_COPY_RELOCS | |
2618 | && eind->elf.root.type != bfd_link_hash_indirect | |
2619 | && edir->elf.dynamic_adjusted)) | |
2620 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
2621 | ||
2622 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
2623 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
2624 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
2625 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
2626 | ||
2627 | /* If we were called to copy over info for a weak sym, that's all. */ | |
2628 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
2629 | return; | |
2630 | ||
2631 | /* Copy over the GOT refcount entries that we may have already seen to | |
2632 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
2633 | edir->elf.got.refcount += eind->elf.got.refcount; |
2634 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
2635 | |
2636 | /* And plt entries. */ | |
2637 | if (eind->elf.plt.plist != NULL) | |
2638 | { | |
2639 | if (edir->elf.plt.plist != NULL) | |
2640 | { | |
2641 | struct plt_entry **entp; | |
2642 | struct plt_entry *ent; | |
2643 | ||
2644 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
2645 | { | |
2646 | struct plt_entry *dent; | |
2647 | ||
2648 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
2649 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
2650 | { | |
2651 | dent->plt.refcount += ent->plt.refcount; | |
2652 | *entp = ent->next; | |
2653 | break; | |
2654 | } | |
2655 | if (dent == NULL) | |
2656 | entp = &ent->next; | |
2657 | } | |
2658 | *entp = edir->elf.plt.plist; | |
2659 | } | |
2660 | ||
2661 | edir->elf.plt.plist = eind->elf.plt.plist; | |
2662 | eind->elf.plt.plist = NULL; | |
2663 | } | |
2664 | ||
fcfa13d2 | 2665 | if (eind->elf.dynindx != -1) |
25dbc73a | 2666 | { |
fcfa13d2 AM |
2667 | if (edir->elf.dynindx != -1) |
2668 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
2669 | edir->elf.dynstr_index); | |
a6aa5195 AM |
2670 | edir->elf.dynindx = eind->elf.dynindx; |
2671 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
2672 | eind->elf.dynindx = -1; | |
2673 | eind->elf.dynstr_index = 0; | |
25dbc73a | 2674 | } |
25dbc73a | 2675 | } |
3dab13f6 | 2676 | |
8853c3d3 AM |
2677 | /* Return 1 if target is one of ours. */ |
2678 | ||
2679 | static bfd_boolean | |
2680 | is_ppc_elf_target (const struct bfd_target *targ) | |
2681 | { | |
2682 | extern const bfd_target bfd_elf32_powerpc_vec; | |
2683 | extern const bfd_target bfd_elf32_powerpcle_vec; | |
2684 | ||
2685 | return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec; | |
2686 | } | |
2687 | ||
25dbc73a AM |
2688 | /* Hook called by the linker routine which adds symbols from an object |
2689 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2690 | |
25dbc73a AM |
2691 | static bfd_boolean |
2692 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2693 | struct bfd_link_info *info, | |
2694 | Elf_Internal_Sym *sym, | |
2695 | const char **namep ATTRIBUTE_UNUSED, | |
2696 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2697 | asection **secp, | |
2698 | bfd_vma *valp) | |
2699 | { | |
2700 | if (sym->st_shndx == SHN_COMMON | |
2701 | && !info->relocatable | |
2702 | && sym->st_size <= elf_gp_size (abfd) | |
d2663f46 | 2703 | && is_ppc_elf_target (info->hash->creator)) |
25dbc73a AM |
2704 | { |
2705 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2706 | put into .sbss. */ | |
2707 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2708 | |
25dbc73a AM |
2709 | htab = ppc_elf_hash_table (info); |
2710 | if (htab->sbss == NULL) | |
2711 | { | |
644285ef | 2712 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2713 | |
644285ef AM |
2714 | if (!htab->elf.dynobj) |
2715 | htab->elf.dynobj = abfd; | |
2716 | ||
3496cb2a L |
2717 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2718 | ".sbss", | |
2719 | flags); | |
2720 | if (htab->sbss == NULL) | |
25dbc73a | 2721 | return FALSE; |
3dab13f6 | 2722 | } |
3dab13f6 | 2723 | |
25dbc73a AM |
2724 | *secp = htab->sbss; |
2725 | *valp = sym->st_size; | |
2726 | } | |
3dab13f6 | 2727 | |
25dbc73a | 2728 | return TRUE; |
3dab13f6 AM |
2729 | } |
2730 | \f | |
046183de AM |
2731 | static bfd_boolean |
2732 | create_sdata_sym (struct ppc_elf_link_hash_table *htab, | |
2733 | elf_linker_section_t *lsect) | |
2734 | { | |
2735 | lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name, | |
2736 | TRUE, FALSE, TRUE); | |
2737 | if (lsect->sym == NULL) | |
2738 | return FALSE; | |
2739 | if (lsect->sym->root.type == bfd_link_hash_new) | |
2740 | lsect->sym->non_elf = 0; | |
2741 | lsect->sym->ref_regular = 1; | |
2742 | return TRUE; | |
2743 | } | |
2744 | ||
c9a2f333 | 2745 | /* Create a special linker section. */ |
25dbc73a | 2746 | |
c9a2f333 | 2747 | static bfd_boolean |
55fd94b0 AM |
2748 | ppc_elf_create_linker_section (bfd *abfd, |
2749 | struct bfd_link_info *info, | |
c9a2f333 AM |
2750 | flagword flags, |
2751 | elf_linker_section_t *lsect) | |
252b5132 | 2752 | { |
58111eb7 | 2753 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
c9a2f333 | 2754 | asection *s; |
58111eb7 | 2755 | |
c9a2f333 AM |
2756 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2757 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
2758 | |
2759 | /* Record the first bfd that needs the special sections. */ | |
2760 | if (!htab->elf.dynobj) | |
2761 | htab->elf.dynobj = abfd; | |
2762 | ||
3496cb2a L |
2763 | s = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2764 | lsect->name, | |
2765 | flags); | |
76750a2f | 2766 | if (s == NULL |
76750a2f | 2767 | || !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) |
c9a2f333 | 2768 | return FALSE; |
76750a2f | 2769 | lsect->section = s; |
58111eb7 | 2770 | |
046183de | 2771 | return create_sdata_sym (htab, lsect); |
252b5132 | 2772 | } |
252b5132 | 2773 | |
25dbc73a AM |
2774 | /* Find a linker generated pointer with a given addend and type. */ |
2775 | ||
2776 | static elf_linker_section_pointers_t * | |
2777 | elf_find_pointer_linker_section | |
2778 | (elf_linker_section_pointers_t *linker_pointers, | |
2779 | bfd_vma addend, | |
2780 | elf_linker_section_t *lsect) | |
252b5132 | 2781 | { |
25dbc73a AM |
2782 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2783 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2784 | return linker_pointers; | |
252b5132 | 2785 | |
25dbc73a AM |
2786 | return NULL; |
2787 | } | |
2788 | ||
2789 | /* Allocate a pointer to live in a linker created section. */ | |
2790 | ||
2791 | static bfd_boolean | |
2792 | elf_create_pointer_linker_section (bfd *abfd, | |
25dbc73a AM |
2793 | elf_linker_section_t *lsect, |
2794 | struct elf_link_hash_entry *h, | |
2795 | const Elf_Internal_Rela *rel) | |
2796 | { | |
2797 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2798 | elf_linker_section_pointers_t *linker_section_ptr; | |
2799 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2800 | bfd_size_type amt; | |
2801 | ||
2802 | BFD_ASSERT (lsect != NULL); | |
2803 | ||
2804 | /* Is this a global symbol? */ | |
2805 | if (h != NULL) | |
2806 | { | |
2807 | struct ppc_elf_link_hash_entry *eh; | |
2808 | ||
2809 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2810 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2811 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2812 | rel->r_addend, | |
2813 | lsect)) | |
2814 | return TRUE; | |
2815 | ||
2816 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2817 | } |
2818 | else | |
2819 | { | |
2820 | /* Allocation of a pointer to a local symbol. */ | |
2821 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2822 | ||
2823 | /* Allocate a table to hold the local symbols if first time. */ | |
2824 | if (!ptr) | |
2825 | { | |
2826 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
2827 | ||
2828 | amt = num_symbols; | |
2829 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2830 | ptr = bfd_zalloc (abfd, amt); | |
2831 | ||
2832 | if (!ptr) | |
2833 | return FALSE; | |
2834 | ||
2835 | elf_local_ptr_offsets (abfd) = ptr; | |
2836 | } | |
2837 | ||
2838 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2839 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2840 | rel->r_addend, | |
2841 | lsect)) | |
2842 | return TRUE; | |
252b5132 | 2843 | |
25dbc73a | 2844 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2845 | } |
41fcb14e | 2846 | |
25dbc73a AM |
2847 | /* Allocate space for a pointer in the linker section, and allocate |
2848 | a new pointer record from internal memory. */ | |
2849 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2850 | amt = sizeof (elf_linker_section_pointers_t); | |
2851 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2852 | |
25dbc73a | 2853 | if (!linker_section_ptr) |
7619e7c7 | 2854 | return FALSE; |
41fcb14e | 2855 | |
25dbc73a AM |
2856 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2857 | linker_section_ptr->addend = rel->r_addend; | |
2858 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2859 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2860 | |
25dbc73a AM |
2861 | linker_section_ptr->offset = lsect->section->size; |
2862 | lsect->section->size += 4; | |
7619e7c7 | 2863 | |
25dbc73a AM |
2864 | #ifdef DEBUG |
2865 | fprintf (stderr, | |
2866 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2867 | lsect->name, (long) linker_section_ptr->offset, | |
2868 | (long) lsect->section->size); | |
2869 | #endif | |
7619e7c7 AM |
2870 | |
2871 | return TRUE; | |
41fcb14e AM |
2872 | } |
2873 | ||
b34976b6 | 2874 | static bfd_boolean |
25dbc73a AM |
2875 | update_local_sym_info (bfd *abfd, |
2876 | Elf_Internal_Shdr *symtab_hdr, | |
2877 | unsigned long r_symndx, | |
2878 | int tls_type) | |
252b5132 | 2879 | { |
25dbc73a AM |
2880 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
2881 | char *local_got_tls_masks; | |
252b5132 | 2882 | |
25dbc73a | 2883 | if (local_got_refcounts == NULL) |
252b5132 | 2884 | { |
25dbc73a AM |
2885 | bfd_size_type size = symtab_hdr->sh_info; |
2886 | ||
2887 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
2888 | local_got_refcounts = bfd_zalloc (abfd, size); | |
2889 | if (local_got_refcounts == NULL) | |
b34976b6 | 2890 | return FALSE; |
25dbc73a | 2891 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2892 | } |
41fcb14e | 2893 | |
25dbc73a AM |
2894 | local_got_refcounts[r_symndx] += 1; |
2895 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
2896 | local_got_tls_masks[r_symndx] |= tls_type; | |
2897 | return TRUE; | |
2898 | } | |
41fcb14e | 2899 | |
a6aa5195 AM |
2900 | static bfd_boolean |
2901 | update_plt_info (bfd *abfd, struct elf_link_hash_entry *h, | |
2902 | asection *sec, bfd_vma addend) | |
2903 | { | |
2904 | struct plt_entry *ent; | |
2905 | ||
2906 | if (addend < 32768) | |
2907 | sec = NULL; | |
2908 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
2909 | if (ent->sec == sec && ent->addend == addend) | |
2910 | break; | |
2911 | if (ent == NULL) | |
2912 | { | |
2913 | bfd_size_type amt = sizeof (*ent); | |
2914 | ent = bfd_alloc (abfd, amt); | |
2915 | if (ent == NULL) | |
2916 | return FALSE; | |
2917 | ent->next = h->plt.plist; | |
2918 | ent->sec = sec; | |
2919 | ent->addend = addend; | |
2920 | ent->plt.refcount = 0; | |
2921 | h->plt.plist = ent; | |
2922 | } | |
2923 | ent->plt.refcount += 1; | |
2924 | return TRUE; | |
2925 | } | |
2926 | ||
2927 | static struct plt_entry * | |
2928 | find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend) | |
2929 | { | |
2930 | struct plt_entry *ent; | |
2931 | ||
2932 | if (addend < 32768) | |
2933 | sec = NULL; | |
2934 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
2935 | if (ent->sec == sec && ent->addend == addend) | |
2936 | break; | |
2937 | return ent; | |
2938 | } | |
2939 | ||
25dbc73a AM |
2940 | static void |
2941 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
2942 | { | |
2943 | (*_bfd_error_handler) | |
2944 | (_("%B: relocation %s cannot be used when making a shared object"), | |
2945 | abfd, | |
2946 | ppc_elf_howto_table[r_type]->name); | |
2947 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
2948 | } |
2949 | ||
25dbc73a AM |
2950 | /* Look through the relocs for a section during the first phase, and |
2951 | allocate space in the global offset table or procedure linkage | |
2952 | table. */ | |
252b5132 | 2953 | |
b34976b6 | 2954 | static bfd_boolean |
25dbc73a AM |
2955 | ppc_elf_check_relocs (bfd *abfd, |
2956 | struct bfd_link_info *info, | |
2957 | asection *sec, | |
2958 | const Elf_Internal_Rela *relocs) | |
252b5132 | 2959 | { |
7619e7c7 | 2960 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
2961 | Elf_Internal_Shdr *symtab_hdr; |
2962 | struct elf_link_hash_entry **sym_hashes; | |
2963 | const Elf_Internal_Rela *rel; | |
2964 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 2965 | asection *got2, *sreloc; |
25dbc73a AM |
2966 | |
2967 | if (info->relocatable) | |
2968 | return TRUE; | |
252b5132 | 2969 | |
c87b5a93 AM |
2970 | /* Don't do anything special with non-loaded, non-alloced sections. |
2971 | In particular, any relocs in such sections should not affect GOT | |
2972 | and PLT reference counting (ie. we don't allow them to create GOT | |
2973 | or PLT entries), there's no possibility or desire to optimize TLS | |
2974 | relocs, and there's not much point in propagating relocs to shared | |
2975 | libs that the dynamic linker won't relocate. */ | |
2976 | if ((sec->flags & SEC_ALLOC) == 0) | |
2977 | return TRUE; | |
2978 | ||
252b5132 | 2979 | #ifdef DEBUG |
25dbc73a AM |
2980 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
2981 | sec, abfd); | |
252b5132 RH |
2982 | #endif |
2983 | ||
25dbc73a AM |
2984 | /* Initialize howto table if not already done. */ |
2985 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2986 | ppc_elf_howto_init (); | |
2987 | ||
7619e7c7 | 2988 | htab = ppc_elf_hash_table (info); |
25dbc73a AM |
2989 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2990 | sym_hashes = elf_sym_hashes (abfd); | |
a6aa5195 | 2991 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
2992 | sreloc = NULL; |
2993 | ||
2994 | rel_end = relocs + sec->reloc_count; | |
2995 | for (rel = relocs; rel < rel_end; rel++) | |
2996 | { | |
2997 | unsigned long r_symndx; | |
2998 | enum elf_ppc_reloc_type r_type; | |
2999 | struct elf_link_hash_entry *h; | |
3000 | int tls_type = 0; | |
3001 | ||
3002 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3003 | if (r_symndx < symtab_hdr->sh_info) | |
3004 | h = NULL; | |
3005 | else | |
973a3492 L |
3006 | { |
3007 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3008 | while (h->root.type == bfd_link_hash_indirect | |
3009 | || h->root.type == bfd_link_hash_warning) | |
3010 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3011 | } | |
25dbc73a AM |
3012 | |
3013 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3014 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3015 | startup code. */ | |
3b36f7e6 AM |
3016 | if (h != NULL |
3017 | && htab->got == NULL | |
3018 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3019 | { |
3b36f7e6 AM |
3020 | if (htab->elf.dynobj == NULL) |
3021 | htab->elf.dynobj = abfd; | |
3022 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3023 | return FALSE; | |
3024 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3025 | } |
252b5132 | 3026 | |
25dbc73a AM |
3027 | r_type = ELF32_R_TYPE (rel->r_info); |
3028 | switch (r_type) | |
3029 | { | |
3030 | case R_PPC_GOT_TLSLD16: | |
3031 | case R_PPC_GOT_TLSLD16_LO: | |
3032 | case R_PPC_GOT_TLSLD16_HI: | |
3033 | case R_PPC_GOT_TLSLD16_HA: | |
3034 | htab->tlsld_got.refcount += 1; | |
3035 | tls_type = TLS_TLS | TLS_LD; | |
3036 | goto dogottls; | |
252b5132 | 3037 | |
25dbc73a AM |
3038 | case R_PPC_GOT_TLSGD16: |
3039 | case R_PPC_GOT_TLSGD16_LO: | |
3040 | case R_PPC_GOT_TLSGD16_HI: | |
3041 | case R_PPC_GOT_TLSGD16_HA: | |
3042 | tls_type = TLS_TLS | TLS_GD; | |
3043 | goto dogottls; | |
3044 | ||
3045 | case R_PPC_GOT_TPREL16: | |
3046 | case R_PPC_GOT_TPREL16_LO: | |
3047 | case R_PPC_GOT_TPREL16_HI: | |
3048 | case R_PPC_GOT_TPREL16_HA: | |
3049 | if (info->shared) | |
3050 | info->flags |= DF_STATIC_TLS; | |
3051 | tls_type = TLS_TLS | TLS_TPREL; | |
3052 | goto dogottls; | |
3053 | ||
3054 | case R_PPC_GOT_DTPREL16: | |
3055 | case R_PPC_GOT_DTPREL16_LO: | |
3056 | case R_PPC_GOT_DTPREL16_HI: | |
3057 | case R_PPC_GOT_DTPREL16_HA: | |
3058 | tls_type = TLS_TLS | TLS_DTPREL; | |
3059 | dogottls: | |
3060 | sec->has_tls_reloc = 1; | |
3061 | /* Fall thru */ | |
252b5132 | 3062 | |
25dbc73a AM |
3063 | /* GOT16 relocations */ |
3064 | case R_PPC_GOT16: | |
3065 | case R_PPC_GOT16_LO: | |
3066 | case R_PPC_GOT16_HI: | |
3067 | case R_PPC_GOT16_HA: | |
3068 | /* This symbol requires a global offset table entry. */ | |
3069 | if (htab->got == NULL) | |
3070 | { | |
3071 | if (htab->elf.dynobj == NULL) | |
3072 | htab->elf.dynobj = abfd; | |
3073 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3074 | return FALSE; | |
3075 | } | |
3076 | if (h != NULL) | |
3077 | { | |
3078 | h->got.refcount += 1; | |
3079 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3080 | } | |
3081 | else | |
3082 | /* This is a global offset table entry for a local symbol. */ | |
3083 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3084 | return FALSE; | |
3085 | break; | |
252b5132 | 3086 | |
25dbc73a AM |
3087 | /* Indirect .sdata relocation. */ |
3088 | case R_PPC_EMB_SDAI16: | |
3089 | if (info->shared) | |
3090 | { | |
3091 | bad_shared_reloc (abfd, r_type); | |
3092 | return FALSE; | |
3093 | } | |
c9a2f333 AM |
3094 | if (htab->sdata[0].section == NULL |
3095 | && !ppc_elf_create_linker_section (abfd, info, 0, | |
3096 | &htab->sdata[0])) | |
3097 | return FALSE; | |
76750a2f AM |
3098 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0], |
3099 | h, rel)) | |
25dbc73a | 3100 | return FALSE; |
046183de AM |
3101 | if (h != NULL) |
3102 | { | |
3103 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3104 | h->non_got_ref = TRUE; | |
3105 | } | |
25dbc73a | 3106 | break; |
252b5132 | 3107 | |
25dbc73a AM |
3108 | /* Indirect .sdata2 relocation. */ |
3109 | case R_PPC_EMB_SDA2I16: | |
3110 | if (info->shared) | |
3111 | { | |
3112 | bad_shared_reloc (abfd, r_type); | |
3113 | return FALSE; | |
3114 | } | |
c9a2f333 AM |
3115 | if (htab->sdata[1].section == NULL |
3116 | && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3117 | &htab->sdata[1])) | |
3118 | return FALSE; | |
76750a2f AM |
3119 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1], |
3120 | h, rel)) | |
25dbc73a | 3121 | return FALSE; |
046183de AM |
3122 | if (h != NULL) |
3123 | { | |
3124 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3125 | h->non_got_ref = TRUE; | |
3126 | } | |
25dbc73a | 3127 | break; |
252b5132 | 3128 | |
25dbc73a | 3129 | case R_PPC_SDAREL16: |
046183de AM |
3130 | if (info->shared) |
3131 | { | |
3132 | bad_shared_reloc (abfd, r_type); | |
3133 | return FALSE; | |
3134 | } | |
3135 | if (htab->sdata[0].sym == NULL | |
3136 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3137 | return FALSE; | |
3138 | if (h != NULL) | |
3139 | { | |
3140 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3141 | h->non_got_ref = TRUE; | |
3142 | } | |
3143 | break; | |
3144 | ||
25dbc73a | 3145 | case R_PPC_EMB_SDA2REL: |
046183de AM |
3146 | if (info->shared) |
3147 | { | |
3148 | bad_shared_reloc (abfd, r_type); | |
3149 | return FALSE; | |
3150 | } | |
3151 | if (htab->sdata[1].sym == NULL | |
3152 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3153 | return FALSE; | |
3154 | if (h != NULL) | |
3155 | { | |
3156 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3157 | h->non_got_ref = TRUE; | |
3158 | } | |
3159 | break; | |
3160 | ||
25dbc73a AM |
3161 | case R_PPC_EMB_SDA21: |
3162 | case R_PPC_EMB_RELSDA: | |
046183de AM |
3163 | if (info->shared) |
3164 | { | |
3165 | bad_shared_reloc (abfd, r_type); | |
3166 | return FALSE; | |
3167 | } | |
3168 | if (htab->sdata[0].sym == NULL | |
3169 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3170 | return FALSE; | |
3171 | if (htab->sdata[1].sym == NULL | |
3172 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3173 | return FALSE; | |
3174 | if (h != NULL) | |
3175 | { | |
3176 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3177 | h->non_got_ref = TRUE; | |
3178 | } | |
3179 | break; | |
3180 | ||
25dbc73a AM |
3181 | case R_PPC_EMB_NADDR32: |
3182 | case R_PPC_EMB_NADDR16: | |
3183 | case R_PPC_EMB_NADDR16_LO: | |
3184 | case R_PPC_EMB_NADDR16_HI: | |
3185 | case R_PPC_EMB_NADDR16_HA: | |
3186 | if (info->shared) | |
3187 | { | |
3188 | bad_shared_reloc (abfd, r_type); | |
3189 | return FALSE; | |
3190 | } | |
4dc4a9a5 | 3191 | if (h != NULL) |
046183de | 3192 | h->non_got_ref = TRUE; |
25dbc73a | 3193 | break; |
252b5132 | 3194 | |
25dbc73a AM |
3195 | case R_PPC_PLT32: |
3196 | case R_PPC_PLTREL24: | |
3197 | case R_PPC_PLTREL32: | |
3198 | case R_PPC_PLT16_LO: | |
3199 | case R_PPC_PLT16_HI: | |
3200 | case R_PPC_PLT16_HA: | |
3201 | #ifdef DEBUG | |
3202 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3203 | #endif | |
3204 | /* This symbol requires a procedure linkage table entry. We | |
3205 | actually build the entry in finish_dynamic_symbol, | |
3206 | because this might be a case of linking PIC code without | |
3207 | linking in any dynamic objects, in which case we don't | |
3208 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 3209 | |
25dbc73a AM |
3210 | if (h == NULL) |
3211 | { | |
3212 | /* It does not make sense to have a procedure linkage | |
3213 | table entry for a local symbol. */ | |
3214 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " | |
3215 | "local symbol"), | |
3216 | abfd, | |
3217 | sec, | |
3218 | (long) rel->r_offset, | |
3219 | ppc_elf_howto_table[r_type]->name); | |
3220 | bfd_set_error (bfd_error_bad_value); | |
3221 | return FALSE; | |
3222 | } | |
a6aa5195 AM |
3223 | else |
3224 | { | |
3225 | bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0; | |
ee05f2fe | 3226 | |
a6aa5195 AM |
3227 | h->needs_plt = 1; |
3228 | if (!update_plt_info (abfd, h, got2, addend)) | |
3229 | return FALSE; | |
3230 | } | |
25dbc73a | 3231 | break; |
ee05f2fe | 3232 | |
25dbc73a AM |
3233 | /* The following relocations don't need to propagate the |
3234 | relocation if linking a shared object since they are | |
3235 | section relative. */ | |
3236 | case R_PPC_SECTOFF: | |
3237 | case R_PPC_SECTOFF_LO: | |
3238 | case R_PPC_SECTOFF_HI: | |
3239 | case R_PPC_SECTOFF_HA: | |
3240 | case R_PPC_DTPREL16: | |
3241 | case R_PPC_DTPREL16_LO: | |
3242 | case R_PPC_DTPREL16_HI: | |
3243 | case R_PPC_DTPREL16_HA: | |
3244 | case R_PPC_TOC16: | |
3245 | break; | |
252b5132 | 3246 | |
d7128ce4 AM |
3247 | case R_PPC_REL16: |
3248 | case R_PPC_REL16_LO: | |
3249 | case R_PPC_REL16_HI: | |
3250 | case R_PPC_REL16_HA: | |
3251 | htab->new_plt = 1; | |
3252 | break; | |
3253 | ||
a6aa5195 | 3254 | /* These are just markers. */ |
25dbc73a AM |
3255 | case R_PPC_TLS: |
3256 | case R_PPC_EMB_MRKREF: | |
3257 | case R_PPC_NONE: | |
3258 | case R_PPC_max: | |
3259 | break; | |
252b5132 | 3260 | |
25dbc73a AM |
3261 | /* These should only appear in dynamic objects. */ |
3262 | case R_PPC_COPY: | |
3263 | case R_PPC_GLOB_DAT: | |
3264 | case R_PPC_JMP_SLOT: | |
3265 | case R_PPC_RELATIVE: | |
3266 | break; | |
252b5132 | 3267 | |
25dbc73a AM |
3268 | /* These aren't handled yet. We'll report an error later. */ |
3269 | case R_PPC_ADDR30: | |
3270 | case R_PPC_EMB_RELSEC16: | |
3271 | case R_PPC_EMB_RELST_LO: | |
3272 | case R_PPC_EMB_RELST_HI: | |
3273 | case R_PPC_EMB_RELST_HA: | |
3274 | case R_PPC_EMB_BIT_FLD: | |
3275 | break; | |
252b5132 | 3276 | |
25dbc73a AM |
3277 | /* This refers only to functions defined in the shared library. */ |
3278 | case R_PPC_LOCAL24PC: | |
d7128ce4 AM |
3279 | if (h && h == htab->elf.hgot) |
3280 | htab->old_plt = 1; | |
25dbc73a | 3281 | break; |
252b5132 | 3282 | |
25dbc73a AM |
3283 | /* This relocation describes the C++ object vtable hierarchy. |
3284 | Reconstruct it for later use during GC. */ | |
3285 | case R_PPC_GNU_VTINHERIT: | |
3286 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3287 | return FALSE; | |
3288 | break; | |
252b5132 | 3289 | |
25dbc73a AM |
3290 | /* This relocation describes which C++ vtable entries are actually |
3291 | used. Record for later use during GC. */ | |
3292 | case R_PPC_GNU_VTENTRY: | |
3293 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
3294 | return FALSE; | |
3295 | break; | |
252b5132 | 3296 | |
25dbc73a AM |
3297 | /* We shouldn't really be seeing these. */ |
3298 | case R_PPC_TPREL32: | |
3299 | if (info->shared) | |
3300 | info->flags |= DF_STATIC_TLS; | |
3301 | goto dodyn; | |
252b5132 | 3302 | |
25dbc73a AM |
3303 | /* Nor these. */ |
3304 | case R_PPC_DTPMOD32: | |
3305 | case R_PPC_DTPREL32: | |
3306 | goto dodyn; | |
252b5132 | 3307 | |
25dbc73a AM |
3308 | case R_PPC_TPREL16: |
3309 | case R_PPC_TPREL16_LO: | |
3310 | case R_PPC_TPREL16_HI: | |
3311 | case R_PPC_TPREL16_HA: | |
3312 | if (info->shared) | |
3313 | info->flags |= DF_STATIC_TLS; | |
3314 | goto dodyn; | |
ee05f2fe | 3315 | |
9edfd1af AM |
3316 | case R_PPC_REL32: |
3317 | if (h == NULL | |
3318 | && got2 != NULL | |
3319 | && (sec->flags & SEC_CODE) != 0 | |
3320 | && (info->shared || info->pie) | |
3321 | && !htab->old_plt) | |
3322 | { | |
3323 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3324 | the start of a function, which assembles to a REL32 | |
3325 | reference to .got2. If we detect one of these, then | |
3326 | force the old PLT layout because the linker cannot | |
3327 | reliably deduce the GOT pointer value needed for | |
3328 | PLT call stubs. */ | |
3329 | asection *s; | |
3330 | ||
3331 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
3332 | r_symndx); | |
3333 | if (s == got2) | |
3334 | htab->old_plt = 1; | |
3335 | } | |
3336 | /* fall through */ | |
3337 | ||
25dbc73a AM |
3338 | case R_PPC_REL24: |
3339 | case R_PPC_REL14: | |
3340 | case R_PPC_REL14_BRTAKEN: | |
3341 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3342 | if (h == NULL) |
25dbc73a | 3343 | break; |
d7128ce4 AM |
3344 | if (h == htab->elf.hgot) |
3345 | { | |
3346 | htab->old_plt = 1; | |
3347 | break; | |
3348 | } | |
25dbc73a | 3349 | /* fall through */ |
ee05f2fe | 3350 | |
25dbc73a AM |
3351 | case R_PPC_ADDR32: |
3352 | case R_PPC_ADDR24: | |
3353 | case R_PPC_ADDR16: | |
3354 | case R_PPC_ADDR16_LO: | |
3355 | case R_PPC_ADDR16_HI: | |
3356 | case R_PPC_ADDR16_HA: | |
3357 | case R_PPC_ADDR14: | |
3358 | case R_PPC_ADDR14_BRTAKEN: | |
3359 | case R_PPC_ADDR14_BRNTAKEN: | |
3360 | case R_PPC_UADDR32: | |
3361 | case R_PPC_UADDR16: | |
3362 | if (h != NULL && !info->shared) | |
3363 | { | |
3364 | /* We may need a plt entry if the symbol turns out to be | |
3365 | a function defined in a dynamic object. */ | |
a6aa5195 AM |
3366 | if (!update_plt_info (abfd, h, NULL, 0)) |
3367 | return FALSE; | |
7fce784e | 3368 | |
25dbc73a AM |
3369 | /* We may need a copy reloc too. */ |
3370 | h->non_got_ref = 1; | |
3371 | } | |
7619e7c7 | 3372 | |
25dbc73a AM |
3373 | dodyn: |
3374 | /* If we are creating a shared library, and this is a reloc | |
3375 | against a global symbol, or a non PC relative reloc | |
3376 | against a local symbol, then we need to copy the reloc | |
3377 | into the shared library. However, if we are linking with | |
3378 | -Bsymbolic, we do not need to copy a reloc against a | |
3379 | global symbol which is defined in an object we are | |
3380 | including in the link (i.e., DEF_REGULAR is set). At | |
3381 | this point we have not seen all the input files, so it is | |
3382 | possible that DEF_REGULAR is not set now but will be set | |
3383 | later (it is never cleared). In case of a weak definition, | |
3384 | DEF_REGULAR may be cleared later by a strong definition in | |
3385 | a shared library. We account for that possibility below by | |
3386 | storing information in the dyn_relocs field of the hash | |
3387 | table entry. A similar situation occurs when creating | |
3388 | shared libraries and symbol visibility changes render the | |
3389 | symbol local. | |
7619e7c7 | 3390 | |
25dbc73a AM |
3391 | If on the other hand, we are creating an executable, we |
3392 | may need to keep relocations for symbols satisfied by a | |
3393 | dynamic library if we manage to avoid copy relocs for the | |
3394 | symbol. */ | |
3395 | if ((info->shared | |
3396 | && (MUST_BE_DYN_RELOC (r_type) | |
3397 | || (h != NULL | |
3398 | && (! info->symbolic | |
3399 | || h->root.type == bfd_link_hash_defweak | |
3400 | || !h->def_regular)))) | |
3401 | || (ELIMINATE_COPY_RELOCS | |
3402 | && !info->shared | |
25dbc73a AM |
3403 | && h != NULL |
3404 | && (h->root.type == bfd_link_hash_defweak | |
3405 | || !h->def_regular))) | |
3406 | { | |
3407 | struct ppc_elf_dyn_relocs *p; | |
3408 | struct ppc_elf_dyn_relocs **head; | |
7619e7c7 | 3409 | |
25dbc73a AM |
3410 | #ifdef DEBUG |
3411 | fprintf (stderr, | |
3412 | "ppc_elf_check_relocs needs to " | |
3413 | "create relocation for %s\n", | |
3414 | (h && h->root.root.string | |
3415 | ? h->root.root.string : "<unknown>")); | |
3416 | #endif | |
3417 | if (sreloc == NULL) | |
3418 | { | |
3419 | const char *name; | |
7619e7c7 | 3420 | |
25dbc73a AM |
3421 | name = (bfd_elf_string_from_elf_section |
3422 | (abfd, | |
3423 | elf_elfheader (abfd)->e_shstrndx, | |
3424 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3425 | if (name == NULL) | |
3426 | return FALSE; | |
7619e7c7 | 3427 | |
25dbc73a AM |
3428 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
3429 | && strcmp (bfd_get_section_name (abfd, sec), | |
3430 | name + 5) == 0); | |
7619e7c7 | 3431 | |
c9a2f333 AM |
3432 | if (htab->elf.dynobj == NULL) |
3433 | htab->elf.dynobj = abfd; | |
25dbc73a AM |
3434 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
3435 | if (sreloc == NULL) | |
3436 | { | |
3437 | flagword flags; | |
7619e7c7 | 3438 | |
25dbc73a | 3439 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
c87b5a93 AM |
3440 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
3441 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
3442 | sreloc = bfd_make_section_with_flags (htab->elf.dynobj, |
3443 | name, | |
3444 | flags); | |
25dbc73a | 3445 | if (sreloc == NULL |
25dbc73a AM |
3446 | || ! bfd_set_section_alignment (htab->elf.dynobj, |
3447 | sreloc, 2)) | |
3448 | return FALSE; | |
3449 | } | |
3450 | elf_section_data (sec)->sreloc = sreloc; | |
3451 | } | |
7619e7c7 | 3452 | |
25dbc73a AM |
3453 | /* If this is a global symbol, we count the number of |
3454 | relocations we need for this symbol. */ | |
3455 | if (h != NULL) | |
3456 | { | |
3457 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
3458 | } | |
3459 | else | |
3460 | { | |
3461 | /* Track dynamic relocs needed for local syms too. | |
3462 | We really need local syms available to do this | |
3463 | easily. Oh well. */ | |
7619e7c7 | 3464 | |
25dbc73a | 3465 | asection *s; |
6edfbbad DJ |
3466 | void *vpp; |
3467 | ||
25dbc73a AM |
3468 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
3469 | sec, r_symndx); | |
3470 | if (s == NULL) | |
3471 | return FALSE; | |
7fce784e | 3472 | |
6edfbbad DJ |
3473 | vpp = &elf_section_data (s)->local_dynrel; |
3474 | head = (struct ppc_elf_dyn_relocs **) vpp; | |
25dbc73a | 3475 | } |
7fce784e | 3476 | |
25dbc73a AM |
3477 | p = *head; |
3478 | if (p == NULL || p->sec != sec) | |
3479 | { | |
3480 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3481 | if (p == NULL) | |
3482 | return FALSE; | |
3483 | p->next = *head; | |
3484 | *head = p; | |
3485 | p->sec = sec; | |
3486 | p->count = 0; | |
3487 | p->pc_count = 0; | |
3488 | } | |
3489 | ||
3490 | p->count += 1; | |
3491 | if (!MUST_BE_DYN_RELOC (r_type)) | |
3492 | p->pc_count += 1; | |
7619e7c7 | 3493 | } |
25dbc73a AM |
3494 | |
3495 | break; | |
7619e7c7 AM |
3496 | } |
3497 | } | |
ee05f2fe | 3498 | |
25dbc73a AM |
3499 | return TRUE; |
3500 | } | |
3501 | \f | |
8853c3d3 AM |
3502 | /* Merge backend specific data from an object file to the output |
3503 | object file when linking. */ | |
3504 | ||
3505 | static bfd_boolean | |
3506 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
3507 | { | |
3508 | flagword old_flags; | |
3509 | flagword new_flags; | |
3510 | bfd_boolean error; | |
3511 | ||
3512 | if (!is_ppc_elf_target (ibfd->xvec) | |
3513 | || !is_ppc_elf_target (obfd->xvec)) | |
3514 | return TRUE; | |
3515 | ||
3516 | /* Check if we have the same endianess. */ | |
3517 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
3518 | return FALSE; | |
3519 | ||
3520 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3521 | old_flags = elf_elfheader (obfd)->e_flags; | |
3522 | if (!elf_flags_init (obfd)) | |
3523 | { | |
3524 | /* First call, no flags set. */ | |
3525 | elf_flags_init (obfd) = TRUE; | |
3526 | elf_elfheader (obfd)->e_flags = new_flags; | |
3527 | } | |
3528 | ||
3529 | /* Compatible flags are ok. */ | |
3530 | else if (new_flags == old_flags) | |
3531 | ; | |
3532 | ||
3533 | /* Incompatible flags. */ | |
3534 | else | |
3535 | { | |
3536 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3537 | to be linked with either. */ | |
3538 | error = FALSE; | |
3539 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3540 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3541 | { | |
3542 | error = TRUE; | |
3543 | (*_bfd_error_handler) | |
3544 | (_("%B: compiled with -mrelocatable and linked with " | |
3545 | "modules compiled normally"), ibfd); | |
3546 | } | |
3547 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3548 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3549 | { | |
3550 | error = TRUE; | |
3551 | (*_bfd_error_handler) | |
3552 | (_("%B: compiled normally and linked with " | |
3553 | "modules compiled with -mrelocatable"), ibfd); | |
3554 | } | |
3555 | ||
3556 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3557 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3558 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3559 | ||
3560 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3561 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3562 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3563 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3564 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3565 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3566 | ||
3567 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3568 | any module uses it. */ | |
3569 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3570 | ||
3571 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3572 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3573 | ||
3574 | /* Warn about any other mismatches. */ | |
3575 | if (new_flags != old_flags) | |
3576 | { | |
3577 | error = TRUE; | |
3578 | (*_bfd_error_handler) | |
3579 | (_("%B: uses different e_flags (0x%lx) fields " | |
3580 | "than previous modules (0x%lx)"), | |
3581 | ibfd, (long) new_flags, (long) old_flags); | |
3582 | } | |
3583 | ||
3584 | if (error) | |
3585 | { | |
3586 | bfd_set_error (bfd_error_bad_value); | |
3587 | return FALSE; | |
3588 | } | |
3589 | } | |
3590 | ||
3591 | return TRUE; | |
3592 | } | |
3593 | \f | |
d7128ce4 AM |
3594 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
3595 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
3596 | int | |
3597 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3598 | struct bfd_link_info *info, | |
0ba07910 AM |
3599 | int force_old_plt, |
3600 | int emit_stub_syms) | |
d7128ce4 AM |
3601 | { |
3602 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 3603 | flagword flags; |
d7128ce4 AM |
3604 | |
3605 | htab = ppc_elf_hash_table (info); | |
3606 | if (force_old_plt || !htab->new_plt) | |
3607 | htab->old_plt = 1; | |
3608 | ||
0ba07910 AM |
3609 | htab->emit_stub_syms = emit_stub_syms; |
3610 | ||
9d8504b1 | 3611 | if (htab->is_vxworks) |
d7128ce4 | 3612 | { |
9d8504b1 PB |
3613 | /* The VxWorks PLT is a loaded section with contents. */ |
3614 | flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
3615 | | SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
3616 | ||
3617 | if (htab->plt != NULL | |
3618 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
3619 | return -1; | |
3620 | } | |
3621 | else if (!htab->old_plt) | |
3622 | { | |
3623 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3624 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
3625 | |
3626 | /* The new PLT is a loaded section. */ | |
3627 | if (htab->plt != NULL | |
3628 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
3629 | return -1; | |
3630 | ||
3631 | /* The new GOT is not executable. */ | |
3632 | if (htab->got != NULL | |
3633 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
3634 | return -1; | |
d7128ce4 AM |
3635 | } |
3636 | else | |
3637 | { | |
3638 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
3639 | if (htab->glink != NULL |
3640 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
3641 | return -1; | |
d7128ce4 AM |
3642 | } |
3643 | return !htab->old_plt; | |
3644 | } | |
3645 | \f | |
25dbc73a AM |
3646 | /* Return the section that should be marked against GC for a given |
3647 | relocation. */ | |
586119b3 | 3648 | |
25dbc73a AM |
3649 | static asection * |
3650 | ppc_elf_gc_mark_hook (asection *sec, | |
3651 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3652 | Elf_Internal_Rela *rel, | |
3653 | struct elf_link_hash_entry *h, | |
3654 | Elf_Internal_Sym *sym) | |
3655 | { | |
3656 | if (h != NULL) | |
ee05f2fe | 3657 | { |
25dbc73a | 3658 | switch (ELF32_R_TYPE (rel->r_info)) |
ee05f2fe | 3659 | { |
25dbc73a AM |
3660 | case R_PPC_GNU_VTINHERIT: |
3661 | case R_PPC_GNU_VTENTRY: | |
3662 | break; | |
ee05f2fe | 3663 | |
25dbc73a AM |
3664 | default: |
3665 | switch (h->root.type) | |
ee05f2fe | 3666 | { |
25dbc73a AM |
3667 | case bfd_link_hash_defined: |
3668 | case bfd_link_hash_defweak: | |
3669 | return h->root.u.def.section; | |
3670 | ||
3671 | case bfd_link_hash_common: | |
3672 | return h->root.u.c.p->section; | |
3673 | ||
3674 | default: | |
3675 | break; | |
ee05f2fe AM |
3676 | } |
3677 | } | |
25dbc73a AM |
3678 | } |
3679 | else | |
3680 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
4e795f50 | 3681 | |
25dbc73a AM |
3682 | return NULL; |
3683 | } | |
a876ecf9 | 3684 | |
25dbc73a AM |
3685 | /* Update the got, plt and dynamic reloc reference counts for the |
3686 | section being removed. */ | |
3687 | ||
3688 | static bfd_boolean | |
3689 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
3690 | struct bfd_link_info *info, | |
3691 | asection *sec, | |
3692 | const Elf_Internal_Rela *relocs) | |
3693 | { | |
3694 | struct ppc_elf_link_hash_table *htab; | |
3695 | Elf_Internal_Shdr *symtab_hdr; | |
3696 | struct elf_link_hash_entry **sym_hashes; | |
3697 | bfd_signed_vma *local_got_refcounts; | |
3698 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 3699 | asection *got2; |
25dbc73a | 3700 | |
c87b5a93 AM |
3701 | if ((sec->flags & SEC_ALLOC) == 0) |
3702 | return TRUE; | |
3703 | ||
25dbc73a AM |
3704 | elf_section_data (sec)->local_dynrel = NULL; |
3705 | ||
3706 | htab = ppc_elf_hash_table (info); | |
3707 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3708 | sym_hashes = elf_sym_hashes (abfd); | |
3709 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 3710 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3711 | |
3712 | relend = relocs + sec->reloc_count; | |
3713 | for (rel = relocs; rel < relend; rel++) | |
3714 | { | |
3715 | unsigned long r_symndx; | |
3716 | enum elf_ppc_reloc_type r_type; | |
3717 | struct elf_link_hash_entry *h = NULL; | |
3718 | ||
3719 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3720 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 3721 | { |
25dbc73a AM |
3722 | struct ppc_elf_dyn_relocs **pp, *p; |
3723 | struct ppc_elf_link_hash_entry *eh; | |
3724 | ||
3725 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3726 | while (h->root.type == bfd_link_hash_indirect | |
3727 | || h->root.type == bfd_link_hash_warning) | |
3728 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3729 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3730 | ||
3731 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3732 | if (p->sec == sec) | |
3733 | { | |
3734 | /* Everything must go for SEC. */ | |
3735 | *pp = p->next; | |
3736 | break; | |
3737 | } | |
a876ecf9 | 3738 | } |
ee05f2fe | 3739 | |
25dbc73a AM |
3740 | r_type = ELF32_R_TYPE (rel->r_info); |
3741 | switch (r_type) | |
ee05f2fe | 3742 | { |
25dbc73a AM |
3743 | case R_PPC_GOT_TLSLD16: |
3744 | case R_PPC_GOT_TLSLD16_LO: | |
3745 | case R_PPC_GOT_TLSLD16_HI: | |
3746 | case R_PPC_GOT_TLSLD16_HA: | |
3747 | htab->tlsld_got.refcount -= 1; | |
3748 | /* Fall thru */ | |
3749 | ||
3750 | case R_PPC_GOT_TLSGD16: | |
3751 | case R_PPC_GOT_TLSGD16_LO: | |
3752 | case R_PPC_GOT_TLSGD16_HI: | |
3753 | case R_PPC_GOT_TLSGD16_HA: | |
3754 | case R_PPC_GOT_TPREL16: | |
3755 | case R_PPC_GOT_TPREL16_LO: | |
3756 | case R_PPC_GOT_TPREL16_HI: | |
3757 | case R_PPC_GOT_TPREL16_HA: | |
3758 | case R_PPC_GOT_DTPREL16: | |
3759 | case R_PPC_GOT_DTPREL16_LO: | |
3760 | case R_PPC_GOT_DTPREL16_HI: | |
3761 | case R_PPC_GOT_DTPREL16_HA: | |
3762 | case R_PPC_GOT16: | |
3763 | case R_PPC_GOT16_LO: | |
3764 | case R_PPC_GOT16_HI: | |
3765 | case R_PPC_GOT16_HA: | |
3766 | if (h != NULL) | |
ee05f2fe | 3767 | { |
25dbc73a AM |
3768 | if (h->got.refcount > 0) |
3769 | h->got.refcount--; | |
ee05f2fe | 3770 | } |
25dbc73a AM |
3771 | else if (local_got_refcounts != NULL) |
3772 | { | |
3773 | if (local_got_refcounts[r_symndx] > 0) | |
3774 | local_got_refcounts[r_symndx]--; | |
3775 | } | |
3776 | break; | |
ee05f2fe | 3777 | |
25dbc73a AM |
3778 | case R_PPC_REL24: |
3779 | case R_PPC_REL14: | |
3780 | case R_PPC_REL14_BRTAKEN: | |
3781 | case R_PPC_REL14_BRNTAKEN: | |
3782 | case R_PPC_REL32: | |
3b36f7e6 | 3783 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
3784 | break; |
3785 | /* Fall thru */ | |
ee05f2fe | 3786 | |
25dbc73a AM |
3787 | case R_PPC_ADDR32: |
3788 | case R_PPC_ADDR24: | |
3789 | case R_PPC_ADDR16: | |
3790 | case R_PPC_ADDR16_LO: | |
3791 | case R_PPC_ADDR16_HI: | |
3792 | case R_PPC_ADDR16_HA: | |
3793 | case R_PPC_ADDR14: | |
3794 | case R_PPC_ADDR14_BRTAKEN: | |
3795 | case R_PPC_ADDR14_BRNTAKEN: | |
3796 | case R_PPC_UADDR32: | |
3797 | case R_PPC_UADDR16: | |
87538722 AM |
3798 | if (info->shared) |
3799 | break; | |
3800 | ||
25dbc73a AM |
3801 | case R_PPC_PLT32: |
3802 | case R_PPC_PLTREL24: | |
87538722 | 3803 | case R_PPC_PLTREL32: |
25dbc73a AM |
3804 | case R_PPC_PLT16_LO: |
3805 | case R_PPC_PLT16_HI: | |
3806 | case R_PPC_PLT16_HA: | |
3807 | if (h != NULL) | |
3808 | { | |
a6aa5195 AM |
3809 | bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0; |
3810 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
3811 | if (ent->plt.refcount > 0) | |
3812 | ent->plt.refcount -= 1; | |
25dbc73a AM |
3813 | } |
3814 | break; | |
ee05f2fe | 3815 | |
25dbc73a AM |
3816 | default: |
3817 | break; | |
3818 | } | |
7fce784e | 3819 | } |
7fce784e AS |
3820 | return TRUE; |
3821 | } | |
25dbc73a AM |
3822 | \f |
3823 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ | |
7fce784e | 3824 | |
25dbc73a AM |
3825 | asection * |
3826 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) | |
7fce784e | 3827 | { |
25dbc73a | 3828 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 3829 | |
25dbc73a | 3830 | htab = ppc_elf_hash_table (info); |
d7128ce4 AM |
3831 | if (!htab->old_plt |
3832 | && htab->plt != NULL | |
3833 | && htab->plt->output_section != NULL) | |
3834 | { | |
3835 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
3836 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
3837 | } | |
3838 | ||
25dbc73a AM |
3839 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3840 | FALSE, FALSE, TRUE); | |
25dbc73a | 3841 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
3842 | } |
3843 | ||
25dbc73a AM |
3844 | /* Run through all the TLS relocs looking for optimization |
3845 | opportunities. */ | |
252b5132 | 3846 | |
25dbc73a AM |
3847 | bfd_boolean |
3848 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
3849 | struct bfd_link_info *info) | |
252b5132 | 3850 | { |
7fce784e | 3851 | bfd *ibfd; |
25dbc73a AM |
3852 | asection *sec; |
3853 | struct ppc_elf_link_hash_table *htab; | |
252b5132 | 3854 | |
25dbc73a AM |
3855 | if (info->relocatable || info->shared) |
3856 | return TRUE; | |
252b5132 | 3857 | |
7619e7c7 | 3858 | htab = ppc_elf_hash_table (info); |
25dbc73a | 3859 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
252b5132 | 3860 | { |
25dbc73a AM |
3861 | Elf_Internal_Sym *locsyms = NULL; |
3862 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7619e7c7 | 3863 | |
25dbc73a AM |
3864 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
3865 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
3866 | { | |
3867 | Elf_Internal_Rela *relstart, *rel, *relend; | |
3868 | int expecting_tls_get_addr; | |
252b5132 | 3869 | |
25dbc73a AM |
3870 | /* Read the relocations. */ |
3871 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
3872 | info->keep_memory); | |
3873 | if (relstart == NULL) | |
3874 | return FALSE; | |
7619e7c7 | 3875 | |
25dbc73a AM |
3876 | expecting_tls_get_addr = 0; |
3877 | relend = relstart + sec->reloc_count; | |
3878 | for (rel = relstart; rel < relend; rel++) | |
3879 | { | |
3880 | enum elf_ppc_reloc_type r_type; | |
3881 | unsigned long r_symndx; | |
3882 | struct elf_link_hash_entry *h = NULL; | |
3883 | char *tls_mask; | |
3884 | char tls_set, tls_clear; | |
3885 | bfd_boolean is_local; | |
7fce784e | 3886 | |
25dbc73a AM |
3887 | r_symndx = ELF32_R_SYM (rel->r_info); |
3888 | if (r_symndx >= symtab_hdr->sh_info) | |
3889 | { | |
3890 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 3891 | |
25dbc73a AM |
3892 | sym_hashes = elf_sym_hashes (ibfd); |
3893 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3894 | while (h->root.type == bfd_link_hash_indirect | |
3895 | || h->root.type == bfd_link_hash_warning) | |
3896 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3897 | } | |
7619e7c7 | 3898 | |
25dbc73a AM |
3899 | is_local = FALSE; |
3900 | if (h == NULL | |
3901 | || !h->def_dynamic) | |
3902 | is_local = TRUE; | |
7619e7c7 | 3903 | |
25dbc73a AM |
3904 | r_type = ELF32_R_TYPE (rel->r_info); |
3905 | switch (r_type) | |
7619e7c7 | 3906 | { |
25dbc73a AM |
3907 | case R_PPC_GOT_TLSLD16: |
3908 | case R_PPC_GOT_TLSLD16_LO: | |
3909 | case R_PPC_GOT_TLSLD16_HI: | |
3910 | case R_PPC_GOT_TLSLD16_HA: | |
3911 | /* These relocs should never be against a symbol | |
3912 | defined in a shared lib. Leave them alone if | |
3913 | that turns out to be the case. */ | |
3914 | expecting_tls_get_addr = 0; | |
3915 | htab->tlsld_got.refcount -= 1; | |
3916 | if (!is_local) | |
3917 | continue; | |
3918 | ||
3919 | /* LD -> LE */ | |
3920 | tls_set = 0; | |
3921 | tls_clear = TLS_LD; | |
3922 | expecting_tls_get_addr = 1; | |
3923 | break; | |
3924 | ||
3925 | case R_PPC_GOT_TLSGD16: | |
3926 | case R_PPC_GOT_TLSGD16_LO: | |
3927 | case R_PPC_GOT_TLSGD16_HI: | |
3928 | case R_PPC_GOT_TLSGD16_HA: | |
3929 | if (is_local) | |
3930 | /* GD -> LE */ | |
3931 | tls_set = 0; | |
3932 | else | |
3933 | /* GD -> IE */ | |
3934 | tls_set = TLS_TLS | TLS_TPRELGD; | |
3935 | tls_clear = TLS_GD; | |
3936 | expecting_tls_get_addr = 1; | |
3937 | break; | |
3938 | ||
3939 | case R_PPC_GOT_TPREL16: | |
3940 | case R_PPC_GOT_TPREL16_LO: | |
3941 | case R_PPC_GOT_TPREL16_HI: | |
3942 | case R_PPC_GOT_TPREL16_HA: | |
3943 | expecting_tls_get_addr = 0; | |
3944 | if (is_local) | |
3945 | { | |
3946 | /* IE -> LE */ | |
3947 | tls_set = 0; | |
3948 | tls_clear = TLS_TPREL; | |
3949 | break; | |
3950 | } | |
3951 | else | |
3952 | continue; | |
3953 | ||
3954 | case R_PPC_REL14: | |
3955 | case R_PPC_REL14_BRTAKEN: | |
3956 | case R_PPC_REL14_BRNTAKEN: | |
3957 | case R_PPC_REL24: | |
3958 | if (expecting_tls_get_addr | |
3959 | && h != NULL | |
3960 | && h == htab->tls_get_addr) | |
3961 | { | |
a6aa5195 AM |
3962 | struct plt_entry *ent = find_plt_ent (h, NULL, 0); |
3963 | if (ent != NULL && ent->plt.refcount > 0) | |
3964 | ent->plt.refcount -= 1; | |
25dbc73a AM |
3965 | } |
3966 | expecting_tls_get_addr = 0; | |
3967 | continue; | |
3968 | ||
3969 | default: | |
3970 | expecting_tls_get_addr = 0; | |
3971 | continue; | |
7619e7c7 | 3972 | } |
25dbc73a AM |
3973 | |
3974 | if (h != NULL) | |
7619e7c7 | 3975 | { |
25dbc73a AM |
3976 | if (tls_set == 0) |
3977 | { | |
3978 | /* We managed to get rid of a got entry. */ | |
3979 | if (h->got.refcount > 0) | |
3980 | h->got.refcount -= 1; | |
3981 | } | |
3982 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
3983 | } | |
3984 | else | |
3985 | { | |
3986 | Elf_Internal_Sym *sym; | |
3987 | bfd_signed_vma *lgot_refs; | |
3988 | char *lgot_masks; | |
3989 | ||
3990 | if (locsyms == NULL) | |
3991 | { | |
3992 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3993 | if (locsyms == NULL) | |
3994 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
3995 | symtab_hdr->sh_info, | |
3996 | 0, NULL, NULL, NULL); | |
3997 | if (locsyms == NULL) | |
3998 | { | |
3999 | if (elf_section_data (sec)->relocs != relstart) | |
4000 | free (relstart); | |
4001 | return FALSE; | |
4002 | } | |
4003 | } | |
4004 | sym = locsyms + r_symndx; | |
4005 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4006 | if (lgot_refs == NULL) | |
4007 | abort (); | |
4008 | if (tls_set == 0) | |
4009 | { | |
4010 | /* We managed to get rid of a got entry. */ | |
4011 | if (lgot_refs[r_symndx] > 0) | |
4012 | lgot_refs[r_symndx] -= 1; | |
4013 | } | |
4014 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
4015 | tls_mask = &lgot_masks[r_symndx]; | |
7619e7c7 | 4016 | } |
25dbc73a AM |
4017 | |
4018 | *tls_mask |= tls_set; | |
4019 | *tls_mask &= ~tls_clear; | |
7619e7c7 | 4020 | } |
25dbc73a AM |
4021 | |
4022 | if (elf_section_data (sec)->relocs != relstart) | |
4023 | free (relstart); | |
7619e7c7 | 4024 | } |
25dbc73a AM |
4025 | |
4026 | if (locsyms != NULL | |
4027 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4028 | { | |
4029 | if (!info->keep_memory) | |
4030 | free (locsyms); | |
4031 | else | |
4032 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4033 | } | |
7fce784e | 4034 | } |
25dbc73a AM |
4035 | return TRUE; |
4036 | } | |
4037 | \f | |
4038 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4039 | regular object. The current definition is in some section of the | |
4040 | dynamic object, but we're not including those sections. We have to | |
4041 | change the definition to something the rest of the link can | |
4042 | understand. */ | |
7fce784e | 4043 | |
25dbc73a AM |
4044 | static bfd_boolean |
4045 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4046 | struct elf_link_hash_entry *h) | |
4047 | { | |
4048 | struct ppc_elf_link_hash_table *htab; | |
4049 | asection *s; | |
4050 | unsigned int power_of_two; | |
7fce784e | 4051 | |
25dbc73a AM |
4052 | #ifdef DEBUG |
4053 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4054 | h->root.root.string); | |
4055 | #endif | |
252b5132 | 4056 | |
25dbc73a AM |
4057 | /* Make sure we know what is going on here. */ |
4058 | htab = ppc_elf_hash_table (info); | |
4059 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4060 | && (h->needs_plt | |
4061 | || h->u.weakdef != NULL | |
4062 | || (h->def_dynamic | |
4063 | && h->ref_regular | |
4064 | && !h->def_regular))); | |
252b5132 | 4065 | |
25dbc73a AM |
4066 | /* Deal with function syms. */ |
4067 | if (h->type == STT_FUNC | |
4068 | || h->needs_plt) | |
4069 | { | |
4070 | /* Clear procedure linkage table information for any symbol that | |
4071 | won't need a .plt entry. */ | |
a6aa5195 AM |
4072 | struct plt_entry *ent; |
4073 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4074 | if (ent->plt.refcount > 0) | |
4075 | break; | |
4076 | if (ent == NULL | |
25dbc73a AM |
4077 | || SYMBOL_CALLS_LOCAL (info, h) |
4078 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4079 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 4080 | { |
25dbc73a | 4081 | /* A PLT entry is not required/allowed when: |
252b5132 | 4082 | |
25dbc73a AM |
4083 | 1. We are not using ld.so; because then the PLT entry |
4084 | can't be set up, so we can't use one. In this case, | |
4085 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4086 | |
25dbc73a AM |
4087 | 2. GC has rendered the entry unused. |
4088 | ||
4089 | 3. We know for certain that a call to this symbol | |
4090 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4091 | h->plt.plist = NULL; |
25dbc73a AM |
4092 | h->needs_plt = 0; |
4093 | } | |
4094 | return TRUE; | |
252b5132 | 4095 | } |
25dbc73a | 4096 | else |
a6aa5195 | 4097 | h->plt.plist = NULL; |
252b5132 | 4098 | |
25dbc73a AM |
4099 | /* If this is a weak symbol, and there is a real definition, the |
4100 | processor independent code will have arranged for us to see the | |
4101 | real definition first, and we can just use the same value. */ | |
4102 | if (h->u.weakdef != NULL) | |
252b5132 | 4103 | { |
25dbc73a AM |
4104 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4105 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4106 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4107 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4108 | if (ELIMINATE_COPY_RELOCS) | |
4109 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
4110 | return TRUE; | |
4111 | } | |
dc810e39 | 4112 | |
25dbc73a AM |
4113 | /* This is a reference to a symbol defined by a dynamic object which |
4114 | is not a function. */ | |
252b5132 | 4115 | |
25dbc73a AM |
4116 | /* If we are creating a shared library, we must presume that the |
4117 | only references to the symbol are via the global offset table. | |
4118 | For such cases we need not do anything here; the relocations will | |
4119 | be handled correctly by relocate_section. */ | |
4120 | if (info->shared) | |
4121 | return TRUE; | |
252b5132 | 4122 | |
25dbc73a AM |
4123 | /* If there are no references to this symbol that do not use the |
4124 | GOT, we don't need to generate a copy reloc. */ | |
4125 | if (!h->non_got_ref) | |
4126 | return TRUE; | |
4127 | ||
4dc4a9a5 DJ |
4128 | /* If we didn't find any dynamic relocs in read-only sections, then we'll |
4129 | be keeping the dynamic relocs and avoiding the copy reloc. We can't | |
4130 | do this if there are any small data relocations. */ | |
4131 | if (ELIMINATE_COPY_RELOCS | |
4132 | && !ppc_elf_hash_entry (h)->has_sda_refs) | |
25dbc73a AM |
4133 | { |
4134 | struct ppc_elf_dyn_relocs *p; | |
4135 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
252b5132 | 4136 | { |
25dbc73a AM |
4137 | s = p->sec->output_section; |
4138 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4139 | break; | |
252b5132 RH |
4140 | } |
4141 | ||
25dbc73a | 4142 | if (p == NULL) |
252b5132 | 4143 | { |
25dbc73a AM |
4144 | h->non_got_ref = 0; |
4145 | return TRUE; | |
252b5132 RH |
4146 | } |
4147 | } | |
4148 | ||
909272ee AM |
4149 | if (h->size == 0) |
4150 | { | |
4151 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4152 | h->root.root.string); | |
4153 | return TRUE; | |
4154 | } | |
4155 | ||
25dbc73a AM |
4156 | /* We must allocate the symbol in our .dynbss section, which will |
4157 | become part of the .bss section of the executable. There will be | |
4158 | an entry for this symbol in the .dynsym section. The dynamic | |
4159 | object will contain position independent code, so all references | |
4160 | from the dynamic object to this symbol will go through the global | |
4161 | offset table. The dynamic linker will use the .dynsym entry to | |
4162 | determine the address it must put in the global offset table, so | |
4163 | both the dynamic object and the regular object will refer to the | |
4164 | same memory location for the variable. | |
4165 | ||
4dc4a9a5 DJ |
4166 | Of course, if the symbol is referenced using SDAREL relocs, we |
4167 | must instead allocate it in .sbss. */ | |
25dbc73a | 4168 | |
4dc4a9a5 | 4169 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4170 | s = htab->dynsbss; |
4171 | else | |
4172 | s = htab->dynbss; | |
4173 | BFD_ASSERT (s != NULL); | |
4174 | ||
4175 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
4176 | copy the initial value out of the dynamic object and into the | |
4177 | runtime process image. We need to remember the offset into the | |
4178 | .rela.bss section we are going to use. */ | |
4179 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4180 | { | |
4181 | asection *srel; | |
4182 | ||
4dc4a9a5 | 4183 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4184 | srel = htab->relsbss; |
4185 | else | |
4186 | srel = htab->relbss; | |
4187 | BFD_ASSERT (srel != NULL); | |
4188 | srel->size += sizeof (Elf32_External_Rela); | |
4189 | h->needs_copy = 1; | |
4190 | } | |
7619e7c7 | 4191 | |
25dbc73a AM |
4192 | /* We need to figure out the alignment required for this symbol. I |
4193 | have no idea how ELF linkers handle this. */ | |
4194 | power_of_two = bfd_log2 (h->size); | |
4195 | if (power_of_two > 4) | |
4196 | power_of_two = 4; | |
7619e7c7 | 4197 | |
25dbc73a AM |
4198 | /* Apply the required alignment. */ |
4199 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
4200 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
4201 | { | |
4202 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) | |
7619e7c7 | 4203 | return FALSE; |
7619e7c7 AM |
4204 | } |
4205 | ||
25dbc73a AM |
4206 | /* Define the symbol as being at this point in the section. */ |
4207 | h->root.u.def.section = s; | |
4208 | h->root.u.def.value = s->size; | |
7619e7c7 | 4209 | |
25dbc73a AM |
4210 | /* Increment the section size to make room for the symbol. */ |
4211 | s->size += h->size; | |
7619e7c7 | 4212 | |
25dbc73a AM |
4213 | return TRUE; |
4214 | } | |
4215 | \f | |
ac39eb42 AM |
4216 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
4217 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
4218 | specifying the addend on the plt relocation. For -fpic code, the sym | |
4219 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
4220 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
4221 | |
4222 | static bfd_boolean | |
4223 | add_stub_sym (struct plt_entry *ent, | |
4224 | struct elf_link_hash_entry *h, | |
ac39eb42 | 4225 | struct bfd_link_info *info) |
0ba07910 AM |
4226 | { |
4227 | struct elf_link_hash_entry *sh; | |
4228 | size_t len1, len2, len3; | |
4229 | char *name; | |
ac39eb42 AM |
4230 | const char *stub; |
4231 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
4232 | ||
4233 | if (info->shared || info->pie) | |
4234 | stub = ".plt_pic32."; | |
4235 | else | |
4236 | stub = ".plt_call32."; | |
0ba07910 AM |
4237 | |
4238 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 4239 | len2 = strlen (stub); |
0ba07910 AM |
4240 | len3 = 0; |
4241 | if (ent->sec) | |
4242 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 4243 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
4244 | if (name == NULL) |
4245 | return FALSE; | |
4246 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
4247 | if (ent->sec) | |
4248 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
4249 | memcpy (name + 8 + len3, stub, len2); |
4250 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
4251 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
4252 | if (sh == NULL) | |
4253 | return FALSE; | |
4254 | if (sh->root.type == bfd_link_hash_new) | |
4255 | { | |
4256 | sh->root.type = bfd_link_hash_defined; | |
4257 | sh->root.u.def.section = htab->glink; | |
4258 | sh->root.u.def.value = ent->glink_offset; | |
4259 | sh->ref_regular = 1; | |
4260 | sh->def_regular = 1; | |
4261 | sh->ref_regular_nonweak = 1; | |
4262 | sh->forced_local = 1; | |
4263 | sh->non_elf = 0; | |
4264 | } | |
4265 | return TRUE; | |
4266 | } | |
4267 | ||
3b36f7e6 AM |
4268 | /* Allocate NEED contiguous space in .got, and return the offset. |
4269 | Handles allocation of the got header when crossing 32k. */ | |
4270 | ||
4271 | static bfd_vma | |
4272 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
4273 | { | |
4274 | bfd_vma where; | |
d7128ce4 AM |
4275 | unsigned int max_before_header = 32768; |
4276 | ||
4277 | if (htab->old_plt) | |
4278 | max_before_header = 32764; | |
3b36f7e6 | 4279 | |
9d8504b1 PB |
4280 | if (htab->is_vxworks) |
4281 | { | |
4282 | where = htab->got->size; | |
4283 | htab->got->size += need; | |
4284 | } | |
4285 | else if (need <= htab->got_gap) | |
3b36f7e6 AM |
4286 | { |
4287 | where = max_before_header - htab->got_gap; | |
4288 | htab->got_gap -= need; | |
4289 | } | |
4290 | else | |
4291 | { | |
4292 | if (htab->got->size + need > max_before_header | |
4293 | && htab->got->size <= max_before_header) | |
4294 | { | |
4295 | htab->got_gap = max_before_header - htab->got->size; | |
4296 | htab->got->size = max_before_header + htab->got_header_size; | |
4297 | } | |
4298 | where = htab->got->size; | |
4299 | htab->got->size += need; | |
4300 | } | |
4301 | return where; | |
4302 | } | |
4303 | ||
25dbc73a | 4304 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 4305 | |
b34976b6 | 4306 | static bfd_boolean |
25dbc73a | 4307 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 4308 | { |
25dbc73a AM |
4309 | struct bfd_link_info *info = inf; |
4310 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 4311 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 4312 | struct ppc_elf_dyn_relocs *p; |
252b5132 | 4313 | |
25dbc73a | 4314 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 4315 | return TRUE; |
252b5132 | 4316 | |
25dbc73a AM |
4317 | if (h->root.type == bfd_link_hash_warning) |
4318 | /* When warning symbols are created, they **replace** the "real" | |
4319 | entry in the hash table, thus we never get to see the real | |
4320 | symbol in a hash traversal. So look at it now. */ | |
4321 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e47cd125 | 4322 | |
7619e7c7 | 4323 | htab = ppc_elf_hash_table (info); |
a6aa5195 | 4324 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4325 | { |
a6aa5195 AM |
4326 | struct plt_entry *ent; |
4327 | bfd_boolean doneone = FALSE; | |
28e99bb6 AM |
4328 | bfd_vma plt_offset = 0, glink_offset = 0; |
4329 | ||
a6aa5195 AM |
4330 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
4331 | if (ent->plt.refcount > 0) | |
4332 | { | |
4333 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4334 | if (h->dynindx == -1 | |
4335 | && !h->forced_local) | |
4336 | { | |
4337 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4338 | return FALSE; | |
4339 | } | |
252b5132 | 4340 | |
a6aa5195 AM |
4341 | if (info->shared |
4342 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
4343 | { | |
4344 | asection *s = htab->plt; | |
7619e7c7 | 4345 | |
9d8504b1 | 4346 | if (!(htab->old_plt || htab->is_vxworks)) |
a6aa5195 | 4347 | { |
a6aa5195 | 4348 | if (!doneone) |
28e99bb6 AM |
4349 | { |
4350 | plt_offset = s->size; | |
4351 | s->size += 4; | |
4352 | } | |
4353 | ent->plt.offset = plt_offset; | |
d7128ce4 | 4354 | |
a6aa5195 | 4355 | s = htab->glink; |
28e99bb6 AM |
4356 | if (!doneone || info->shared || info->pie) |
4357 | { | |
4358 | glink_offset = s->size; | |
4359 | s->size += GLINK_ENTRY_SIZE; | |
4360 | } | |
4361 | if (!doneone | |
4362 | && !info->shared | |
a6aa5195 AM |
4363 | && !h->def_regular) |
4364 | { | |
4365 | h->root.u.def.section = s; | |
28e99bb6 | 4366 | h->root.u.def.value = glink_offset; |
a6aa5195 | 4367 | } |
28e99bb6 | 4368 | ent->glink_offset = glink_offset; |
0ba07910 AM |
4369 | |
4370 | if (htab->emit_stub_syms | |
ac39eb42 | 4371 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 4372 | return FALSE; |
a6aa5195 AM |
4373 | } |
4374 | else | |
4375 | { | |
a6aa5195 AM |
4376 | if (!doneone) |
4377 | { | |
28e99bb6 AM |
4378 | /* If this is the first .plt entry, make room |
4379 | for the special first entry. */ | |
4380 | if (s->size == 0) | |
9d8504b1 | 4381 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
4382 | |
4383 | /* The PowerPC PLT is actually composed of two | |
4384 | parts, the first part is 2 words (for a load | |
4385 | and a jump), and then there is a remaining | |
4386 | word available at the end. */ | |
9d8504b1 PB |
4387 | plt_offset = (htab->plt_initial_entry_size |
4388 | + (htab->plt_slot_size | |
4389 | * ((s->size | |
4390 | - htab->plt_initial_entry_size) | |
4391 | / htab->plt_entry_size))); | |
28e99bb6 AM |
4392 | |
4393 | /* If this symbol is not defined in a regular | |
4394 | file, and we are not generating a shared | |
4395 | library, then set the symbol to this location | |
4396 | in the .plt. This is required to make | |
4397 | function pointers compare as equal between | |
4398 | the normal executable and the shared library. */ | |
4399 | if (! info->shared | |
4400 | && !h->def_regular) | |
4401 | { | |
4402 | h->root.u.def.section = s; | |
4403 | h->root.u.def.value = plt_offset; | |
4404 | } | |
4405 | ||
9d8504b1 PB |
4406 | /* Make room for this entry. */ |
4407 | s->size += htab->plt_entry_size; | |
4408 | /* After the 8192nd entry, room for two entries | |
4409 | is allocated. */ | |
4410 | if (!htab->is_vxworks | |
4411 | && (s->size - htab->plt_initial_entry_size) | |
4412 | / htab->plt_entry_size | |
4413 | > PLT_NUM_SINGLE_ENTRIES) | |
4414 | s->size += htab->plt_entry_size; | |
a6aa5195 | 4415 | } |
28e99bb6 | 4416 | ent->plt.offset = plt_offset; |
a6aa5195 | 4417 | } |
25dbc73a | 4418 | |
a6aa5195 AM |
4419 | /* We also need to make an entry in the .rela.plt section. */ |
4420 | if (!doneone) | |
4421 | { | |
4422 | htab->relplt->size += sizeof (Elf32_External_Rela); | |
9d8504b1 PB |
4423 | |
4424 | if (htab->is_vxworks) | |
4425 | { | |
4426 | /* Allocate space for the unloaded relocations. */ | |
4427 | if (!info->shared) | |
4428 | { | |
4429 | if (ent->plt.offset | |
4430 | == (bfd_vma) htab->plt_initial_entry_size) | |
4431 | { | |
4432 | htab->srelplt2->size | |
4433 | += sizeof (Elf32_External_Rela) | |
4434 | * VXWORKS_PLTRESOLVE_RELOCS; | |
4435 | } | |
4436 | ||
4437 | htab->srelplt2->size | |
4438 | += sizeof (Elf32_External_Rela) | |
4439 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS; | |
4440 | } | |
4441 | ||
4442 | /* Every PLT entry has an associated GOT entry in | |
4443 | .got.plt. */ | |
4444 | htab->sgotplt->size += 4; | |
4445 | } | |
a6aa5195 AM |
4446 | doneone = TRUE; |
4447 | } | |
4448 | } | |
4449 | else | |
4450 | ent->plt.offset = (bfd_vma) -1; | |
4451 | ||
4452 | if (!doneone) | |
4453 | { | |
4454 | h->plt.plist = NULL; | |
4455 | h->needs_plt = 0; | |
4456 | } | |
4457 | } | |
25dbc73a AM |
4458 | } |
4459 | else | |
4460 | { | |
a6aa5195 | 4461 | h->plt.plist = NULL; |
25dbc73a AM |
4462 | h->needs_plt = 0; |
4463 | } | |
4464 | ||
4465 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4466 | if (eh->elf.got.refcount > 0) | |
4467 | { | |
4468 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4469 | if (eh->elf.dynindx == -1 | |
4470 | && !eh->elf.forced_local) | |
4471 | { | |
4472 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 4473 | return FALSE; |
25dbc73a | 4474 | } |
252b5132 | 4475 | |
25dbc73a AM |
4476 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
4477 | && !eh->elf.def_dynamic) | |
4478 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ | |
4479 | eh->elf.got.offset = (bfd_vma) -1; | |
4480 | else | |
4481 | { | |
4482 | bfd_boolean dyn; | |
3b36f7e6 | 4483 | unsigned int need = 0; |
25dbc73a | 4484 | if ((eh->tls_mask & TLS_TLS) != 0) |
252b5132 | 4485 | { |
25dbc73a | 4486 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 | 4487 | need += 8; |
25dbc73a | 4488 | if ((eh->tls_mask & TLS_GD) != 0) |
3b36f7e6 | 4489 | need += 8; |
25dbc73a | 4490 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4491 | need += 4; |
25dbc73a | 4492 | if ((eh->tls_mask & TLS_DTPREL) != 0) |
3b36f7e6 | 4493 | need += 4; |
252b5132 | 4494 | } |
25dbc73a | 4495 | else |
3b36f7e6 AM |
4496 | need += 4; |
4497 | eh->elf.got.offset = allocate_got (htab, need); | |
25dbc73a AM |
4498 | dyn = htab->elf.dynamic_sections_created; |
4499 | if ((info->shared | |
4500 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
4501 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
4502 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 4503 | { |
3b36f7e6 AM |
4504 | /* All the entries we allocated need relocs. |
4505 | Except LD only needs one. */ | |
25dbc73a | 4506 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 AM |
4507 | need -= 4; |
4508 | htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4); | |
252b5132 | 4509 | } |
25dbc73a AM |
4510 | } |
4511 | } | |
4512 | else | |
4513 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 4514 | |
25dbc73a AM |
4515 | if (eh->dyn_relocs == NULL) |
4516 | return TRUE; | |
252b5132 | 4517 | |
25dbc73a AM |
4518 | /* In the shared -Bsymbolic case, discard space allocated for |
4519 | dynamic pc-relative relocs against symbols which turn out to be | |
4520 | defined in regular objects. For the normal shared case, discard | |
4521 | space for relocs that have become local due to symbol visibility | |
4522 | changes. */ | |
4523 | ||
4524 | if (info->shared) | |
4525 | { | |
4526 | /* Relocs that use pc_count are those that appear on a call insn, | |
4527 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
4528 | generated via assembly. We want calls to protected symbols to | |
4529 | resolve directly to the function rather than going via the plt. | |
4530 | If people want function pointer comparisons to work as expected | |
4531 | then they should avoid writing weird assembly. */ | |
4532 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
4533 | { | |
4534 | struct ppc_elf_dyn_relocs **pp; | |
4535 | ||
4536 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 4537 | { |
25dbc73a AM |
4538 | p->count -= p->pc_count; |
4539 | p->pc_count = 0; | |
4540 | if (p->count == 0) | |
4541 | *pp = p->next; | |
4542 | else | |
4543 | pp = &p->next; | |
252b5132 | 4544 | } |
25dbc73a | 4545 | } |
252b5132 | 4546 | |
25dbc73a AM |
4547 | /* Also discard relocs on undefined weak syms with non-default |
4548 | visibility. */ | |
4549 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4550 | && h->root.type == bfd_link_hash_undefweak) | |
4551 | eh->dyn_relocs = NULL; | |
7619e7c7 | 4552 | |
25dbc73a AM |
4553 | /* Make sure undefined weak symbols are output as a dynamic symbol |
4554 | in PIEs. */ | |
4555 | if (info->pie | |
4556 | && eh->dyn_relocs != NULL | |
4557 | && h->dynindx == -1 | |
4558 | && h->root.type == bfd_link_hash_undefweak | |
4559 | && !h->forced_local) | |
4560 | { | |
4561 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4562 | return FALSE; | |
4563 | } | |
4564 | } | |
4565 | else if (ELIMINATE_COPY_RELOCS) | |
4566 | { | |
4567 | /* For the non-shared case, discard space for relocs against | |
4568 | symbols which turn out to need copy relocs or are not | |
4569 | dynamic. */ | |
7619e7c7 | 4570 | |
25dbc73a AM |
4571 | if (!h->non_got_ref |
4572 | && h->def_dynamic | |
4573 | && !h->def_regular) | |
4574 | { | |
4575 | /* Make sure this symbol is output as a dynamic symbol. | |
4576 | Undefined weak syms won't yet be marked as dynamic. */ | |
4577 | if (h->dynindx == -1 | |
4578 | && !h->forced_local) | |
4579 | { | |
4580 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4581 | return FALSE; | |
4582 | } | |
7619e7c7 | 4583 | |
25dbc73a AM |
4584 | /* If that succeeded, we know we'll be keeping all the |
4585 | relocs. */ | |
4586 | if (h->dynindx != -1) | |
4587 | goto keep; | |
4588 | } | |
252b5132 | 4589 | |
25dbc73a | 4590 | eh->dyn_relocs = NULL; |
252b5132 | 4591 | |
25dbc73a AM |
4592 | keep: ; |
4593 | } | |
252b5132 | 4594 | |
25dbc73a AM |
4595 | /* Finally, allocate space. */ |
4596 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4597 | { | |
4598 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
4599 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
4600 | } | |
252b5132 | 4601 | |
25dbc73a AM |
4602 | return TRUE; |
4603 | } | |
7619e7c7 | 4604 | |
25dbc73a | 4605 | /* Find any dynamic relocs that apply to read-only sections. */ |
7619e7c7 | 4606 | |
25dbc73a AM |
4607 | static bfd_boolean |
4608 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) | |
4609 | { | |
4610 | struct ppc_elf_dyn_relocs *p; | |
7619e7c7 | 4611 | |
25dbc73a AM |
4612 | if (h->root.type == bfd_link_hash_indirect) |
4613 | return TRUE; | |
252b5132 | 4614 | |
25dbc73a AM |
4615 | if (h->root.type == bfd_link_hash_warning) |
4616 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 4617 | |
25dbc73a AM |
4618 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) |
4619 | { | |
4620 | asection *s = p->sec->output_section; | |
ee05f2fe | 4621 | |
25dbc73a AM |
4622 | if (s != NULL |
4623 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
4624 | == (SEC_READONLY | SEC_ALLOC))) | |
4625 | { | |
4626 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
ee05f2fe | 4627 | |
25dbc73a AM |
4628 | /* Not an error, just cut short the traversal. */ |
4629 | return FALSE; | |
4630 | } | |
4631 | } | |
4632 | return TRUE; | |
4633 | } | |
4634 | ||
4635 | /* Set the sizes of the dynamic sections. */ | |
4636 | ||
4637 | static bfd_boolean | |
4638 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4639 | struct bfd_link_info *info) | |
4640 | { | |
4641 | struct ppc_elf_link_hash_table *htab; | |
4642 | asection *s; | |
4643 | bfd_boolean relocs; | |
4644 | bfd *ibfd; | |
7fce784e | 4645 | |
252b5132 | 4646 | #ifdef DEBUG |
25dbc73a | 4647 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 4648 | #endif |
252b5132 | 4649 | |
25dbc73a AM |
4650 | htab = ppc_elf_hash_table (info); |
4651 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 4652 | |
25dbc73a AM |
4653 | if (elf_hash_table (info)->dynamic_sections_created) |
4654 | { | |
4655 | /* Set the contents of the .interp section to the interpreter. */ | |
4656 | if (info->executable) | |
4657 | { | |
4658 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); | |
4659 | BFD_ASSERT (s != NULL); | |
4660 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4661 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4662 | } | |
4663 | } | |
252b5132 | 4664 | |
d7128ce4 AM |
4665 | if (htab->old_plt) |
4666 | htab->got_header_size = 16; | |
4667 | else | |
4668 | htab->got_header_size = 12; | |
252b5132 | 4669 | |
25dbc73a AM |
4670 | /* Set up .got offsets for local syms, and space for local dynamic |
4671 | relocs. */ | |
4672 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4673 | { | |
4674 | bfd_signed_vma *local_got; | |
4675 | bfd_signed_vma *end_local_got; | |
4676 | char *lgot_masks; | |
4677 | bfd_size_type locsymcount; | |
4678 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 4679 | |
d2663f46 | 4680 | if (!is_ppc_elf_target (ibfd->xvec)) |
25dbc73a | 4681 | continue; |
7fce784e | 4682 | |
25dbc73a AM |
4683 | for (s = ibfd->sections; s != NULL; s = s->next) |
4684 | { | |
4685 | struct ppc_elf_dyn_relocs *p; | |
252b5132 | 4686 | |
25dbc73a AM |
4687 | for (p = ((struct ppc_elf_dyn_relocs *) |
4688 | elf_section_data (s)->local_dynrel); | |
4689 | p != NULL; | |
4690 | p = p->next) | |
4691 | { | |
4692 | if (!bfd_is_abs_section (p->sec) | |
4693 | && bfd_is_abs_section (p->sec->output_section)) | |
4694 | { | |
4695 | /* Input section has been discarded, either because | |
4696 | it is a copy of a linkonce section or due to | |
4697 | linker script /DISCARD/, so we'll be discarding | |
4698 | the relocs too. */ | |
7fce784e | 4699 | } |
25dbc73a | 4700 | else if (p->count != 0) |
7fce784e | 4701 | { |
25dbc73a AM |
4702 | elf_section_data (p->sec)->sreloc->size |
4703 | += p->count * sizeof (Elf32_External_Rela); | |
4704 | if ((p->sec->output_section->flags | |
4705 | & (SEC_READONLY | SEC_ALLOC)) | |
4706 | == (SEC_READONLY | SEC_ALLOC)) | |
4707 | info->flags |= DF_TEXTREL; | |
7fce784e | 4708 | } |
252b5132 | 4709 | } |
252b5132 | 4710 | } |
252b5132 | 4711 | |
25dbc73a AM |
4712 | local_got = elf_local_got_refcounts (ibfd); |
4713 | if (!local_got) | |
4714 | continue; | |
252b5132 | 4715 | |
25dbc73a AM |
4716 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
4717 | locsymcount = symtab_hdr->sh_info; | |
4718 | end_local_got = local_got + locsymcount; | |
4719 | lgot_masks = (char *) end_local_got; | |
25dbc73a AM |
4720 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
4721 | if (*local_got > 0) | |
4722 | { | |
4723 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
4724 | { | |
4725 | /* If just an LD reloc, we'll just use | |
4726 | htab->tlsld_got.offset. */ | |
3b36f7e6 | 4727 | htab->tlsld_got.refcount += 1; |
25dbc73a AM |
4728 | *local_got = (bfd_vma) -1; |
4729 | } | |
4730 | else | |
4731 | { | |
3b36f7e6 | 4732 | unsigned int need = 0; |
25dbc73a AM |
4733 | if ((*lgot_masks & TLS_TLS) != 0) |
4734 | { | |
4735 | if ((*lgot_masks & TLS_GD) != 0) | |
3b36f7e6 | 4736 | need += 8; |
25dbc73a | 4737 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4738 | need += 4; |
25dbc73a | 4739 | if ((*lgot_masks & TLS_DTPREL) != 0) |
3b36f7e6 | 4740 | need += 4; |
25dbc73a AM |
4741 | } |
4742 | else | |
3b36f7e6 AM |
4743 | need += 4; |
4744 | *local_got = allocate_got (htab, need); | |
25dbc73a | 4745 | if (info->shared) |
3b36f7e6 AM |
4746 | htab->relgot->size += (need |
4747 | * (sizeof (Elf32_External_Rela) / 4)); | |
25dbc73a AM |
4748 | } |
4749 | } | |
4750 | else | |
4751 | *local_got = (bfd_vma) -1; | |
4752 | } | |
252b5132 | 4753 | |
3b36f7e6 AM |
4754 | if (htab->tlsld_got.refcount > 0) |
4755 | { | |
4756 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
4757 | if (info->shared) | |
4758 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
4759 | } | |
4760 | else | |
4761 | htab->tlsld_got.offset = (bfd_vma) -1; | |
4762 | ||
9d8504b1 PB |
4763 | if (htab->is_vxworks) |
4764 | { | |
636ce3f5 AM |
4765 | /* Save the PLT symbol in the hash table for easy access. |
4766 | Mark GOT and PLT syms as having relocations; they might not, | |
4767 | but we won't know for sure until we build the GOT in | |
4768 | finish_dynamic_symbol. */ | |
9d8504b1 | 4769 | |
636ce3f5 AM |
4770 | if (htab->elf.hgot) |
4771 | htab->elf.hgot->indx = -2; | |
9d8504b1 PB |
4772 | htab->hplt = elf_link_hash_lookup (elf_hash_table (info), |
4773 | "_PROCEDURE_LINKAGE_TABLE_", | |
4774 | FALSE, FALSE, FALSE); | |
4775 | if (htab->hplt) | |
4776 | htab->hplt->indx = -2; | |
4777 | /* If the PLT is executable then give the symbol function type. */ | |
4778 | if (htab->hplt && htab->plt->flags & SEC_CODE) | |
4779 | htab->hplt->type = STT_FUNC; | |
4780 | } | |
4781 | ||
25dbc73a AM |
4782 | /* Allocate space for global sym dynamic relocs. */ |
4783 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
4784 | ||
9d8504b1 | 4785 | if (htab->got != NULL && !htab->is_vxworks) |
3b36f7e6 AM |
4786 | { |
4787 | unsigned int g_o_t = 32768; | |
4788 | ||
4d962050 AM |
4789 | /* If we haven't allocated the header, do so now. When we get here, |
4790 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
4791 | or 32780 to 65536 (header allocated). For new plt/got, the | |
4792 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
4793 | if (htab->got->size <= 32768) |
4794 | { | |
4795 | g_o_t = htab->got->size; | |
4d962050 AM |
4796 | if (htab->old_plt) |
4797 | g_o_t += 4; | |
3b36f7e6 AM |
4798 | htab->got->size += htab->got_header_size; |
4799 | } | |
3b36f7e6 AM |
4800 | |
4801 | htab->elf.hgot->root.u.def.value = g_o_t; | |
4802 | } | |
4803 | ||
d7128ce4 AM |
4804 | if (htab->glink != NULL && htab->glink->size != 0) |
4805 | { | |
4806 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
4807 | /* Space for the branch table. */ |
4808 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
4809 | /* Pad out to align the start of PLTresolve. */ | |
4810 | htab->glink->size += -htab->glink->size & 15; | |
d7128ce4 | 4811 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 AM |
4812 | |
4813 | if (htab->emit_stub_syms) | |
4814 | { | |
4815 | struct elf_link_hash_entry *sh; | |
4816 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
4817 | TRUE, FALSE, FALSE); | |
4818 | if (sh == NULL) | |
4819 | return FALSE; | |
4820 | if (sh->root.type == bfd_link_hash_new) | |
4821 | { | |
4822 | sh->root.type = bfd_link_hash_defined; | |
4823 | sh->root.u.def.section = htab->glink; | |
4824 | sh->root.u.def.value = htab->glink_pltresolve; | |
4825 | sh->ref_regular = 1; | |
4826 | sh->def_regular = 1; | |
4827 | sh->ref_regular_nonweak = 1; | |
4828 | sh->forced_local = 1; | |
4829 | sh->non_elf = 0; | |
4830 | } | |
4831 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
4832 | TRUE, FALSE, FALSE); | |
4833 | if (sh == NULL) | |
4834 | return FALSE; | |
4835 | if (sh->root.type == bfd_link_hash_new) | |
4836 | { | |
4837 | sh->root.type = bfd_link_hash_defined; | |
4838 | sh->root.u.def.section = htab->glink; | |
4839 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
4840 | sh->ref_regular = 1; | |
4841 | sh->def_regular = 1; | |
4842 | sh->ref_regular_nonweak = 1; | |
4843 | sh->forced_local = 1; | |
4844 | sh->non_elf = 0; | |
4845 | } | |
4846 | } | |
d7128ce4 AM |
4847 | } |
4848 | ||
25dbc73a AM |
4849 | /* We've now determined the sizes of the various dynamic sections. |
4850 | Allocate memory for them. */ | |
4851 | relocs = FALSE; | |
4852 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 4853 | { |
9d8504b1 PB |
4854 | bfd_boolean strip_section = TRUE; |
4855 | ||
25dbc73a AM |
4856 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
4857 | continue; | |
252b5132 | 4858 | |
25dbc73a | 4859 | if (s == htab->plt |
d7128ce4 | 4860 | || s == htab->glink |
644285ef | 4861 | || s == htab->got |
9d8504b1 | 4862 | || s == htab->sgotplt |
c456f082 AM |
4863 | || s == htab->sbss |
4864 | || s == htab->dynbss | |
4865 | || s == htab->dynsbss) | |
25dbc73a | 4866 | { |
9d8504b1 PB |
4867 | /* We'd like to strip these sections if they aren't needed, but if |
4868 | we've exported dynamic symbols from them we must leave them. | |
4869 | It's too late to tell BFD to get rid of the symbols. */ | |
4870 | if ((s == htab->plt || s == htab->got) && htab->hplt != NULL) | |
4871 | strip_section = FALSE; | |
25dbc73a AM |
4872 | /* Strip this section if we don't need it; see the |
4873 | comment below. */ | |
4874 | } | |
c9a2f333 AM |
4875 | else if (s == htab->sdata[0].section |
4876 | || s == htab->sdata[1].section) | |
25dbc73a | 4877 | { |
c9a2f333 | 4878 | /* Strip these too. */ |
25dbc73a AM |
4879 | } |
4880 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
4881 | { | |
c456f082 | 4882 | if (s->size != 0) |
25dbc73a AM |
4883 | { |
4884 | /* Remember whether there are any relocation sections. */ | |
4885 | relocs = TRUE; | |
252b5132 | 4886 | |
25dbc73a AM |
4887 | /* We use the reloc_count field as a counter if we need |
4888 | to copy relocs into the output file. */ | |
4889 | s->reloc_count = 0; | |
252b5132 RH |
4890 | } |
4891 | } | |
25dbc73a AM |
4892 | else |
4893 | { | |
4894 | /* It's not one of our sections, so don't allocate space. */ | |
4895 | continue; | |
4896 | } | |
252b5132 | 4897 | |
9d8504b1 | 4898 | if (s->size == 0 && strip_section) |
25dbc73a | 4899 | { |
c456f082 AM |
4900 | /* If we don't need this section, strip it from the |
4901 | output file. This is mostly to handle .rela.bss and | |
4902 | .rela.plt. We must create both sections in | |
4903 | create_dynamic_sections, because they must be created | |
4904 | before the linker maps input sections to output | |
4905 | sections. The linker does that before | |
4906 | adjust_dynamic_symbol is called, and it is that | |
4907 | function which decides whether anything needs to go | |
4908 | into these sections. */ | |
8423293d | 4909 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
4910 | continue; |
4911 | } | |
7fce784e | 4912 | |
d7128ce4 | 4913 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
4914 | continue; |
4915 | ||
25dbc73a AM |
4916 | /* Allocate memory for the section contents. */ |
4917 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
4918 | if (s->contents == NULL) | |
4919 | return FALSE; | |
4920 | } | |
252b5132 | 4921 | |
25dbc73a | 4922 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 4923 | { |
25dbc73a AM |
4924 | /* Add some entries to the .dynamic section. We fill in the |
4925 | values later, in ppc_elf_finish_dynamic_sections, but we | |
4926 | must add the entries now so that we get the correct size for | |
4927 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4928 | dynamic linker and used by the debugger. */ | |
4929 | #define add_dynamic_entry(TAG, VAL) \ | |
4930 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 4931 | |
25dbc73a | 4932 | if (info->executable) |
7619e7c7 | 4933 | { |
25dbc73a AM |
4934 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
4935 | return FALSE; | |
7619e7c7 AM |
4936 | } |
4937 | ||
25dbc73a | 4938 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 4939 | { |
25dbc73a AM |
4940 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4941 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4942 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4943 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4944 | return FALSE; | |
4945 | } | |
7619e7c7 | 4946 | |
d7128ce4 AM |
4947 | if (htab->glink != NULL && htab->glink->size != 0) |
4948 | { | |
1fe44d79 | 4949 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 AM |
4950 | return FALSE; |
4951 | } | |
4952 | ||
25dbc73a AM |
4953 | if (relocs) |
4954 | { | |
4955 | if (!add_dynamic_entry (DT_RELA, 0) | |
4956 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4957 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4958 | return FALSE; | |
4959 | } | |
7619e7c7 | 4960 | |
25dbc73a AM |
4961 | /* If any dynamic relocs apply to a read-only section, then we |
4962 | need a DT_TEXTREL entry. */ | |
4963 | if ((info->flags & DF_TEXTREL) == 0) | |
4964 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
4965 | info); | |
7619e7c7 | 4966 | |
25dbc73a AM |
4967 | if ((info->flags & DF_TEXTREL) != 0) |
4968 | { | |
4969 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4970 | return FALSE; | |
7619e7c7 AM |
4971 | } |
4972 | } | |
25dbc73a AM |
4973 | #undef add_dynamic_entry |
4974 | ||
7619e7c7 AM |
4975 | return TRUE; |
4976 | } | |
25dbc73a AM |
4977 | \f |
4978 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
4979 | ||
4980 | static const int shared_stub_entry[] = | |
4981 | { | |
4982 | 0x7c0802a6, /* mflr 0 */ | |
4983 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
4984 | 0x7d6802a6, /* mflr 11 */ | |
4985 | 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ | |
4986 | 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ | |
4987 | 0x7c0803a6, /* mtlr 0 */ | |
4988 | 0x7d6903a6, /* mtctr 11 */ | |
4989 | 0x4e800420, /* bctr */ | |
4990 | }; | |
4991 | ||
4992 | static const int stub_entry[] = | |
4993 | { | |
4994 | 0x3d600000, /* lis 11,xxx@ha */ | |
4995 | 0x396b0000, /* addi 11,11,xxx@l */ | |
4996 | 0x7d6903a6, /* mtctr 11 */ | |
4997 | 0x4e800420, /* bctr */ | |
4998 | }; | |
4999 | ||
5000 | static bfd_boolean | |
5001 | ppc_elf_relax_section (bfd *abfd, | |
5002 | asection *isec, | |
5003 | struct bfd_link_info *link_info, | |
5004 | bfd_boolean *again) | |
5005 | { | |
5006 | struct one_fixup | |
5007 | { | |
5008 | struct one_fixup *next; | |
5009 | asection *tsec; | |
5010 | bfd_vma toff; | |
5011 | bfd_vma trampoff; | |
5012 | }; | |
7619e7c7 | 5013 | |
25dbc73a AM |
5014 | Elf_Internal_Shdr *symtab_hdr; |
5015 | bfd_byte *contents = NULL; | |
5016 | Elf_Internal_Sym *isymbuf = NULL; | |
5017 | Elf_Internal_Rela *internal_relocs = NULL; | |
5018 | Elf_Internal_Rela *irel, *irelend; | |
5019 | struct one_fixup *fixups = NULL; | |
5020 | bfd_boolean changed; | |
d7128ce4 | 5021 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 5022 | bfd_size_type trampoff; |
a6aa5195 | 5023 | asection *got2; |
7619e7c7 | 5024 | |
25dbc73a | 5025 | *again = FALSE; |
7619e7c7 | 5026 | |
c87b5a93 AM |
5027 | /* Nothing to do if there are no relocations, and no need to do |
5028 | anything with non-alloc sections. */ | |
5029 | if ((isec->flags & SEC_ALLOC) == 0 | |
5030 | || (isec->flags & SEC_RELOC) == 0 | |
5031 | || isec->reloc_count == 0) | |
25dbc73a | 5032 | return TRUE; |
7619e7c7 | 5033 | |
25dbc73a AM |
5034 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
5035 | /* Space for a branch around any trampolines. */ | |
5036 | trampoff += 4; | |
7619e7c7 | 5037 | |
25dbc73a | 5038 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
7619e7c7 | 5039 | |
25dbc73a AM |
5040 | /* Get a copy of the native relocations. */ |
5041 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, | |
5042 | link_info->keep_memory); | |
5043 | if (internal_relocs == NULL) | |
5044 | goto error_return; | |
7619e7c7 | 5045 | |
d7128ce4 | 5046 | htab = ppc_elf_hash_table (link_info); |
a6aa5195 | 5047 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
7619e7c7 | 5048 | |
a6aa5195 | 5049 | irelend = internal_relocs + isec->reloc_count; |
25dbc73a | 5050 | for (irel = internal_relocs; irel < irelend; irel++) |
7619e7c7 | 5051 | { |
25dbc73a AM |
5052 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
5053 | bfd_vma symaddr, reladdr, toff, roff; | |
5054 | asection *tsec; | |
5055 | struct one_fixup *f; | |
5056 | size_t insn_offset = 0; | |
5057 | bfd_vma max_branch_offset, val; | |
5058 | bfd_byte *hit_addr; | |
5059 | unsigned long t0; | |
5060 | unsigned char sym_type; | |
7619e7c7 | 5061 | |
25dbc73a AM |
5062 | switch (r_type) |
5063 | { | |
5064 | case R_PPC_REL24: | |
5065 | case R_PPC_LOCAL24PC: | |
5066 | case R_PPC_PLTREL24: | |
5067 | max_branch_offset = 1 << 25; | |
5068 | break; | |
7619e7c7 | 5069 | |
25dbc73a AM |
5070 | case R_PPC_REL14: |
5071 | case R_PPC_REL14_BRTAKEN: | |
5072 | case R_PPC_REL14_BRNTAKEN: | |
5073 | max_branch_offset = 1 << 15; | |
5074 | break; | |
7619e7c7 | 5075 | |
25dbc73a AM |
5076 | default: |
5077 | continue; | |
5078 | } | |
7619e7c7 | 5079 | |
25dbc73a AM |
5080 | /* Get the value of the symbol referred to by the reloc. */ |
5081 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5082 | { | |
5083 | /* A local symbol. */ | |
5084 | Elf_Internal_Sym *isym; | |
7fce784e | 5085 | |
25dbc73a AM |
5086 | /* Read this BFD's local symbols. */ |
5087 | if (isymbuf == NULL) | |
5088 | { | |
5089 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5090 | if (isymbuf == NULL) | |
5091 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5092 | symtab_hdr->sh_info, 0, | |
5093 | NULL, NULL, NULL); | |
5094 | if (isymbuf == 0) | |
5095 | goto error_return; | |
5096 | } | |
5097 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5098 | if (isym->st_shndx == SHN_UNDEF) | |
5099 | continue; /* We can't do anything with undefined symbols. */ | |
5100 | else if (isym->st_shndx == SHN_ABS) | |
5101 | tsec = bfd_abs_section_ptr; | |
5102 | else if (isym->st_shndx == SHN_COMMON) | |
5103 | tsec = bfd_com_section_ptr; | |
5104 | else | |
5105 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7fce784e | 5106 | |
25dbc73a AM |
5107 | toff = isym->st_value; |
5108 | sym_type = ELF_ST_TYPE (isym->st_info); | |
5109 | } | |
5110 | else | |
5111 | { | |
5112 | /* Global symbol handling. */ | |
5113 | unsigned long indx; | |
5114 | struct elf_link_hash_entry *h; | |
7619e7c7 | 5115 | |
25dbc73a AM |
5116 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
5117 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 5118 | |
25dbc73a AM |
5119 | while (h->root.type == bfd_link_hash_indirect |
5120 | || h->root.type == bfd_link_hash_warning) | |
5121 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 5122 | |
a6aa5195 AM |
5123 | tsec = NULL; |
5124 | toff = 0; | |
25dbc73a | 5125 | if (r_type == R_PPC_PLTREL24 |
a6aa5195 | 5126 | && htab->plt != NULL) |
25dbc73a | 5127 | { |
a6aa5195 AM |
5128 | struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend); |
5129 | ||
5130 | if (ent != NULL) | |
d7128ce4 | 5131 | { |
a6aa5195 AM |
5132 | if (!htab->old_plt) |
5133 | { | |
5134 | tsec = htab->glink; | |
5135 | toff = ent->glink_offset; | |
5136 | } | |
5137 | else | |
5138 | { | |
5139 | tsec = htab->plt; | |
5140 | toff = ent->plt.offset; | |
5141 | } | |
d7128ce4 | 5142 | } |
25dbc73a | 5143 | } |
a6aa5195 AM |
5144 | if (tsec != NULL) |
5145 | ; | |
25dbc73a AM |
5146 | else if (h->root.type == bfd_link_hash_defined |
5147 | || h->root.type == bfd_link_hash_defweak) | |
5148 | { | |
5149 | tsec = h->root.u.def.section; | |
5150 | toff = h->root.u.def.value; | |
5151 | } | |
5152 | else | |
5153 | continue; | |
7619e7c7 | 5154 | |
25dbc73a AM |
5155 | sym_type = h->type; |
5156 | } | |
7619e7c7 | 5157 | |
25dbc73a AM |
5158 | /* If the branch and target are in the same section, you have |
5159 | no hope of adding stubs. We'll error out later should the | |
5160 | branch overflow. */ | |
5161 | if (tsec == isec) | |
5162 | continue; | |
5163 | ||
5164 | /* There probably isn't any reason to handle symbols in | |
5165 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
5166 | attribute for a code section, and we are only looking at | |
5167 | branches. However, implement it correctly here as a | |
5168 | reference for other target relax_section functions. */ | |
5169 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
5170 | { | |
5171 | /* At this stage in linking, no SEC_MERGE symbol has been | |
5172 | adjusted, so all references to such symbols need to be | |
5173 | passed through _bfd_merged_section_offset. (Later, in | |
5174 | relocate_section, all SEC_MERGE symbols *except* for | |
5175 | section symbols have been adjusted.) | |
5176 | ||
5177 | gas may reduce relocations against symbols in SEC_MERGE | |
5178 | sections to a relocation against the section symbol when | |
5179 | the original addend was zero. When the reloc is against | |
5180 | a section symbol we should include the addend in the | |
5181 | offset passed to _bfd_merged_section_offset, since the | |
5182 | location of interest is the original symbol. On the | |
5183 | other hand, an access to "sym+addend" where "sym" is not | |
5184 | a section symbol should not include the addend; Such an | |
5185 | access is presumed to be an offset from "sym"; The | |
5186 | location of interest is just "sym". */ | |
5187 | if (sym_type == STT_SECTION) | |
5188 | toff += irel->r_addend; | |
7619e7c7 | 5189 | |
25dbc73a AM |
5190 | toff = _bfd_merged_section_offset (abfd, &tsec, |
5191 | elf_section_data (tsec)->sec_info, | |
5192 | toff); | |
7619e7c7 | 5193 | |
25dbc73a AM |
5194 | if (sym_type != STT_SECTION) |
5195 | toff += irel->r_addend; | |
5196 | } | |
a6aa5195 AM |
5197 | /* PLTREL24 addends are special. */ |
5198 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 5199 | toff += irel->r_addend; |
7619e7c7 | 5200 | |
25dbc73a | 5201 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7619e7c7 | 5202 | |
25dbc73a AM |
5203 | roff = irel->r_offset; |
5204 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7619e7c7 | 5205 | |
25dbc73a AM |
5206 | /* If the branch is in range, no need to do anything. */ |
5207 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) | |
5208 | continue; | |
252b5132 | 5209 | |
25dbc73a AM |
5210 | /* Look for an existing fixup to this address. */ |
5211 | for (f = fixups; f ; f = f->next) | |
5212 | if (f->tsec == tsec && f->toff == toff) | |
5213 | break; | |
5214 | ||
5215 | if (f == NULL) | |
7619e7c7 | 5216 | { |
25dbc73a AM |
5217 | size_t size; |
5218 | unsigned long stub_rtype; | |
252b5132 | 5219 | |
25dbc73a AM |
5220 | val = trampoff - roff; |
5221 | if (val >= max_branch_offset) | |
5222 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
5223 | one. We'll report an error later. */ | |
5224 | continue; | |
252b5132 | 5225 | |
25dbc73a AM |
5226 | if (link_info->shared) |
5227 | { | |
5228 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
5229 | insn_offset = 12; | |
5230 | stub_rtype = R_PPC_RELAX32PC; | |
5231 | } | |
5232 | else | |
5233 | { | |
5234 | size = 4 * ARRAY_SIZE (stub_entry); | |
5235 | insn_offset = 0; | |
5236 | stub_rtype = R_PPC_RELAX32; | |
5237 | } | |
dc810e39 | 5238 | |
25dbc73a AM |
5239 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
5240 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
5241 | abort (); | |
d7128ce4 AM |
5242 | if (tsec == htab->plt |
5243 | || tsec == htab->glink) | |
25dbc73a | 5244 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; |
252b5132 | 5245 | |
25dbc73a AM |
5246 | /* Hijack the old relocation. Since we need two |
5247 | relocations for this use a "composite" reloc. */ | |
5248 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
5249 | stub_rtype); | |
5250 | irel->r_offset = trampoff + insn_offset; | |
252b5132 | 5251 | |
25dbc73a AM |
5252 | /* Record the fixup so we don't do it again this section. */ |
5253 | f = bfd_malloc (sizeof (*f)); | |
5254 | f->next = fixups; | |
5255 | f->tsec = tsec; | |
5256 | f->toff = toff; | |
5257 | f->trampoff = trampoff; | |
5258 | fixups = f; | |
252b5132 | 5259 | |
25dbc73a AM |
5260 | trampoff += size; |
5261 | } | |
5262 | else | |
5263 | { | |
5264 | val = f->trampoff - roff; | |
5265 | if (val >= max_branch_offset) | |
5266 | continue; | |
252b5132 | 5267 | |
25dbc73a AM |
5268 | /* Nop out the reloc, since we're finalizing things here. */ |
5269 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
5270 | } | |
252b5132 | 5271 | |
25dbc73a AM |
5272 | /* Get the section contents. */ |
5273 | if (contents == NULL) | |
5274 | { | |
5275 | /* Get cached copy if it exists. */ | |
5276 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
5277 | contents = elf_section_data (isec)->this_hdr.contents; | |
5278 | else | |
5279 | { | |
5280 | /* Go get them off disk. */ | |
5281 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
5282 | goto error_return; | |
5283 | } | |
5284 | } | |
252b5132 | 5285 | |
25dbc73a AM |
5286 | /* Fix up the existing branch to hit the trampoline. */ |
5287 | hit_addr = contents + roff; | |
5288 | switch (r_type) | |
5289 | { | |
5290 | case R_PPC_REL24: | |
5291 | case R_PPC_LOCAL24PC: | |
5292 | case R_PPC_PLTREL24: | |
5293 | t0 = bfd_get_32 (abfd, hit_addr); | |
5294 | t0 &= ~0x3fffffc; | |
5295 | t0 |= val & 0x3fffffc; | |
5296 | bfd_put_32 (abfd, t0, hit_addr); | |
5297 | break; | |
252b5132 | 5298 | |
25dbc73a AM |
5299 | case R_PPC_REL14: |
5300 | case R_PPC_REL14_BRTAKEN: | |
5301 | case R_PPC_REL14_BRNTAKEN: | |
5302 | t0 = bfd_get_32 (abfd, hit_addr); | |
5303 | t0 &= ~0xfffc; | |
5304 | t0 |= val & 0xfffc; | |
5305 | bfd_put_32 (abfd, t0, hit_addr); | |
5306 | break; | |
5307 | } | |
5308 | } | |
252b5132 | 5309 | |
25dbc73a AM |
5310 | /* Write out the trampolines. */ |
5311 | changed = fixups != NULL; | |
5312 | if (fixups != NULL) | |
5313 | { | |
5314 | const int *stub; | |
5315 | bfd_byte *dest; | |
5316 | bfd_vma val; | |
5317 | int i, size; | |
252b5132 | 5318 | |
25dbc73a AM |
5319 | do |
5320 | { | |
5321 | struct one_fixup *f = fixups; | |
5322 | fixups = fixups->next; | |
5323 | free (f); | |
5324 | } | |
5325 | while (fixups); | |
252b5132 | 5326 | |
25dbc73a AM |
5327 | contents = bfd_realloc (contents, trampoff); |
5328 | if (contents == NULL) | |
5329 | goto error_return; | |
252b5132 | 5330 | |
25dbc73a AM |
5331 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
5332 | /* Branch around the trampolines. */ | |
5333 | val = trampoff - isec->size + 0x48000000; | |
5334 | dest = contents + isec->size; | |
5335 | isec->size = trampoff; | |
5336 | bfd_put_32 (abfd, val, dest); | |
5337 | dest += 4; | |
252b5132 | 5338 | |
25dbc73a AM |
5339 | if (link_info->shared) |
5340 | { | |
5341 | stub = shared_stub_entry; | |
5342 | size = ARRAY_SIZE (shared_stub_entry); | |
5343 | } | |
5344 | else | |
5345 | { | |
5346 | stub = stub_entry; | |
5347 | size = ARRAY_SIZE (stub_entry); | |
5348 | } | |
252b5132 | 5349 | |
25dbc73a AM |
5350 | i = 0; |
5351 | while (dest < contents + trampoff) | |
252b5132 | 5352 | { |
25dbc73a AM |
5353 | bfd_put_32 (abfd, stub[i], dest); |
5354 | i++; | |
5355 | if (i == size) | |
5356 | i = 0; | |
5357 | dest += 4; | |
252b5132 | 5358 | } |
25dbc73a | 5359 | BFD_ASSERT (i == 0); |
252b5132 RH |
5360 | } |
5361 | ||
25dbc73a AM |
5362 | if (isymbuf != NULL |
5363 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 5364 | { |
25dbc73a AM |
5365 | if (! link_info->keep_memory) |
5366 | free (isymbuf); | |
252b5132 | 5367 | else |
25dbc73a AM |
5368 | { |
5369 | /* Cache the symbols for elf_link_input_bfd. */ | |
5370 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
5371 | } | |
252b5132 RH |
5372 | } |
5373 | ||
25dbc73a AM |
5374 | if (contents != NULL |
5375 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5376 | { | |
5377 | if (!changed && !link_info->keep_memory) | |
5378 | free (contents); | |
5379 | else | |
5380 | { | |
5381 | /* Cache the section contents for elf_link_input_bfd. */ | |
5382 | elf_section_data (isec)->this_hdr.contents = contents; | |
5383 | } | |
5384 | } | |
252b5132 | 5385 | |
25dbc73a AM |
5386 | if (elf_section_data (isec)->relocs != internal_relocs) |
5387 | { | |
5388 | if (!changed) | |
5389 | free (internal_relocs); | |
5390 | else | |
5391 | elf_section_data (isec)->relocs = internal_relocs; | |
5392 | } | |
252b5132 | 5393 | |
25dbc73a | 5394 | *again = changed; |
b34976b6 | 5395 | return TRUE; |
25dbc73a AM |
5396 | |
5397 | error_return: | |
5398 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
5399 | free (isymbuf); | |
5400 | if (contents != NULL | |
5401 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5402 | free (contents); | |
5403 | if (internal_relocs != NULL | |
5404 | && elf_section_data (isec)->relocs != internal_relocs) | |
5405 | free (internal_relocs); | |
5406 | return FALSE; | |
252b5132 | 5407 | } |
252b5132 | 5408 | \f |
8a696751 AM |
5409 | /* What to do when ld finds relocations against symbols defined in |
5410 | discarded sections. */ | |
5411 | ||
5412 | static unsigned int | |
5413 | ppc_elf_action_discarded (asection *sec) | |
5414 | { | |
5415 | if (strcmp (".fixup", sec->name) == 0) | |
5416 | return 0; | |
5417 | ||
5418 | if (strcmp (".got2", sec->name) == 0) | |
5419 | return 0; | |
5420 | ||
5421 | return _bfd_elf_default_action_discarded (sec); | |
5422 | } | |
c9a2f333 | 5423 | \f |
25dbc73a | 5424 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 5425 | |
25dbc73a | 5426 | static bfd_vma |
76750a2f | 5427 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
5428 | elf_linker_section_t *lsect, |
5429 | struct elf_link_hash_entry *h, | |
5430 | bfd_vma relocation, | |
2bb04cf2 | 5431 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
5432 | { |
5433 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 5434 | |
25dbc73a | 5435 | BFD_ASSERT (lsect != NULL); |
252b5132 | 5436 | |
25dbc73a | 5437 | if (h != NULL) |
252b5132 | 5438 | { |
25dbc73a AM |
5439 | /* Handle global symbol. */ |
5440 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 5441 | |
25dbc73a | 5442 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
5443 | BFD_ASSERT (eh->elf.def_regular); |
5444 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
5445 | } |
5446 | else | |
5447 | { | |
5448 | /* Handle local symbol. */ | |
5449 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 5450 | |
25dbc73a | 5451 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
5452 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
5453 | } | |
252b5132 | 5454 | |
76750a2f AM |
5455 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
5456 | rel->r_addend, | |
5457 | lsect); | |
5458 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 5459 | |
76750a2f AM |
5460 | /* Offset will always be a multiple of four, so use the bottom bit |
5461 | as a "written" flag. */ | |
5462 | if ((linker_section_ptr->offset & 1) == 0) | |
5463 | { | |
5464 | bfd_put_32 (lsect->section->owner, | |
5465 | relocation + linker_section_ptr->addend, | |
5466 | lsect->section->contents + linker_section_ptr->offset); | |
5467 | linker_section_ptr->offset += 1; | |
252b5132 RH |
5468 | } |
5469 | ||
25dbc73a | 5470 | relocation = (lsect->section->output_offset |
76750a2f | 5471 | + linker_section_ptr->offset - 1 |
c9a2f333 | 5472 | - 0x8000); |
252b5132 | 5473 | |
25dbc73a AM |
5474 | #ifdef DEBUG |
5475 | fprintf (stderr, | |
5476 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
5477 | lsect->name, (long) relocation, (long) relocation); | |
5478 | #endif | |
252b5132 | 5479 | |
25dbc73a AM |
5480 | /* Subtract out the addend, because it will get added back in by the normal |
5481 | processing. */ | |
5482 | return relocation - linker_section_ptr->addend; | |
252b5132 | 5483 | } |
25dbc73a | 5484 | |
252b5132 RH |
5485 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
5486 | to handle the relocations for a section. | |
5487 | ||
5488 | The relocs are always passed as Rela structures; if the section | |
5489 | actually uses Rel structures, the r_addend field will always be | |
5490 | zero. | |
5491 | ||
5492 | This function is responsible for adjust the section contents as | |
5493 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 5494 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
5495 | necessary. |
5496 | ||
5497 | This function does not have to worry about setting the reloc | |
5498 | address or the reloc symbol index. | |
5499 | ||
5500 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
5501 | ||
5502 | LOCAL_SECTIONS is an array giving the section in the input file | |
5503 | corresponding to the st_shndx field of each local symbol. | |
5504 | ||
5505 | The global hash table entry for the global symbols can be found | |
5506 | via elf_sym_hashes (input_bfd). | |
5507 | ||
1049f94e | 5508 | When generating relocatable output, this function must handle |
252b5132 RH |
5509 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
5510 | going to be the section symbol corresponding to the output | |
5511 | section, which means that the addend must be adjusted | |
5512 | accordingly. */ | |
5513 | ||
b34976b6 | 5514 | static bfd_boolean |
55fd94b0 AM |
5515 | ppc_elf_relocate_section (bfd *output_bfd, |
5516 | struct bfd_link_info *info, | |
5517 | bfd *input_bfd, | |
5518 | asection *input_section, | |
5519 | bfd_byte *contents, | |
5520 | Elf_Internal_Rela *relocs, | |
5521 | Elf_Internal_Sym *local_syms, | |
5522 | asection **local_sections) | |
252b5132 | 5523 | { |
7619e7c7 AM |
5524 | Elf_Internal_Shdr *symtab_hdr; |
5525 | struct elf_link_hash_entry **sym_hashes; | |
5526 | struct ppc_elf_link_hash_table *htab; | |
5527 | Elf_Internal_Rela *rel; | |
5528 | Elf_Internal_Rela *relend; | |
5529 | Elf_Internal_Rela outrel; | |
5530 | bfd_byte *loc; | |
a6aa5195 | 5531 | asection *got2, *sreloc = NULL; |
252b5132 | 5532 | bfd_vma *local_got_offsets; |
b34976b6 | 5533 | bfd_boolean ret = TRUE; |
b34976b6 | 5534 | |
252b5132 | 5535 | #ifdef DEBUG |
d003868e AM |
5536 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
5537 | "%ld relocations%s", | |
5538 | input_bfd, input_section, | |
5539 | (long) input_section->reloc_count, | |
5540 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
5541 | #endif |
5542 | ||
a6aa5195 AM |
5543 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
5544 | ||
1049f94e | 5545 | if (info->relocatable) |
a6aa5195 AM |
5546 | { |
5547 | if (got2 == NULL) | |
5548 | return TRUE; | |
5549 | ||
5550 | rel = relocs; | |
5551 | relend = relocs + input_section->reloc_count; | |
5552 | for (; rel < relend; rel++) | |
5553 | { | |
5554 | enum elf_ppc_reloc_type r_type; | |
5555 | ||
5556 | r_type = ELF32_R_TYPE (rel->r_info); | |
5557 | if (r_type == R_PPC_PLTREL24 | |
5558 | && rel->r_addend >= 32768) | |
5559 | { | |
5560 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
5561 | addend specifies the GOT pointer offset within .got2. */ | |
5562 | rel->r_addend += got2->output_offset; | |
5563 | } | |
5564 | } | |
5565 | return TRUE; | |
5566 | } | |
b491616a | 5567 | |
e47cd125 | 5568 | /* Initialize howto table if not already done. */ |
8da6118f | 5569 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
5570 | ppc_elf_howto_init (); |
5571 | ||
7619e7c7 | 5572 | htab = ppc_elf_hash_table (info); |
252b5132 | 5573 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
5574 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5575 | sym_hashes = elf_sym_hashes (input_bfd); | |
5576 | rel = relocs; | |
5577 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
5578 | for (; rel < relend; rel++) |
5579 | { | |
7619e7c7 AM |
5580 | enum elf_ppc_reloc_type r_type; |
5581 | bfd_vma addend; | |
5582 | bfd_reloc_status_type r; | |
5583 | Elf_Internal_Sym *sym; | |
5584 | asection *sec; | |
5585 | struct elf_link_hash_entry *h; | |
5586 | const char *sym_name; | |
252b5132 RH |
5587 | reloc_howto_type *howto; |
5588 | unsigned long r_symndx; | |
5589 | bfd_vma relocation; | |
7619e7c7 | 5590 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
5591 | bfd_boolean unresolved_reloc; |
5592 | bfd_boolean warned; | |
5593 | unsigned int tls_type, tls_mask, tls_gd; | |
5594 | ||
55fd94b0 AM |
5595 | r_type = ELF32_R_TYPE (rel->r_info); |
5596 | sym = NULL; | |
5597 | sec = NULL; | |
5598 | h = NULL; | |
7619e7c7 AM |
5599 | unresolved_reloc = FALSE; |
5600 | warned = FALSE; | |
252b5132 | 5601 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 5602 | |
252b5132 RH |
5603 | if (r_symndx < symtab_hdr->sh_info) |
5604 | { | |
5605 | sym = local_syms + r_symndx; | |
5606 | sec = local_sections[r_symndx]; | |
26c61ae5 | 5607 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 5608 | |
8517fae7 | 5609 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
5610 | } |
5611 | else | |
5612 | { | |
b2a8e766 AM |
5613 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
5614 | r_symndx, symtab_hdr, sym_hashes, | |
5615 | h, sec, relocation, | |
5616 | unresolved_reloc, warned); | |
9abc968f | 5617 | |
252b5132 | 5618 | sym_name = h->root.root.string; |
7619e7c7 AM |
5619 | } |
5620 | ||
5621 | /* TLS optimizations. Replace instruction sequences and relocs | |
5622 | based on information we collected in tls_optimize. We edit | |
5623 | RELOCS so that --emit-relocs will output something sensible | |
5624 | for the final instruction stream. */ | |
5625 | tls_mask = 0; | |
5626 | tls_gd = 0; | |
5627 | if (IS_PPC_TLS_RELOC (r_type)) | |
5628 | { | |
5629 | if (h != NULL) | |
5630 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
5631 | else if (local_got_offsets != NULL) | |
5632 | { | |
5633 | char *lgot_masks; | |
5634 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
5635 | tls_mask = lgot_masks[r_symndx]; | |
5636 | } | |
5637 | } | |
5638 | ||
5639 | /* Ensure reloc mapping code below stays sane. */ | |
5640 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
5641 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
5642 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
5643 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
5644 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
5645 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
5646 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
5647 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
5648 | abort (); | |
5649 | switch (r_type) | |
5650 | { | |
5651 | default: | |
5652 | break; | |
5653 | ||
5654 | case R_PPC_GOT_TPREL16: | |
5655 | case R_PPC_GOT_TPREL16_LO: | |
5656 | if (tls_mask != 0 | |
5657 | && (tls_mask & TLS_TPREL) == 0) | |
5658 | { | |
5659 | bfd_vma insn; | |
5660 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); | |
5661 | insn &= 31 << 21; | |
5662 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
5663 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
5664 | r_type = R_PPC_TPREL16_HA; | |
5665 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5666 | } | |
5667 | break; | |
5668 | ||
5669 | case R_PPC_TLS: | |
5670 | if (tls_mask != 0 | |
5671 | && (tls_mask & TLS_TPREL) == 0) | |
5672 | { | |
5673 | bfd_vma insn, rtra; | |
5674 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5675 | if ((insn & ((31 << 26) | (31 << 11))) | |
5676 | == ((31 << 26) | (2 << 11))) | |
5677 | rtra = insn & ((1 << 26) - (1 << 16)); | |
5678 | else if ((insn & ((31 << 26) | (31 << 16))) | |
5679 | == ((31 << 26) | (2 << 16))) | |
5680 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
5681 | else | |
5682 | abort (); | |
5683 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
5684 | /* add -> addi. */ | |
5685 | insn = 14 << 26; | |
5686 | else if ((insn & (31 << 1)) == 23 << 1 | |
5687 | && ((insn & (31 << 6)) < 14 << 6 | |
5688 | || ((insn & (31 << 6)) >= 16 << 6 | |
5689 | && (insn & (31 << 6)) < 24 << 6))) | |
5690 | /* load and store indexed -> dform. */ | |
5691 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
5692 | else if ((insn & (31 << 1)) == 21 << 1 | |
5693 | && (insn & (0x1a << 6)) == 0) | |
5694 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
5695 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
5696 | | ((insn >> 6) & 1)); | |
5697 | else if ((insn & (31 << 1)) == 21 << 1 | |
5698 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
5699 | /* lwax -> lwa. */ | |
5700 | insn = (58 << 26) | 2; | |
5701 | else | |
5702 | abort (); | |
5703 | insn |= rtra; | |
5704 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5705 | r_type = R_PPC_TPREL16_LO; | |
5706 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5707 | /* Was PPC_TLS which sits on insn boundary, now | |
5708 | PPC_TPREL16_LO which is at insn+2. */ | |
5709 | rel->r_offset += 2; | |
5710 | } | |
5711 | break; | |
5712 | ||
5713 | case R_PPC_GOT_TLSGD16_HI: | |
5714 | case R_PPC_GOT_TLSGD16_HA: | |
5715 | tls_gd = TLS_TPRELGD; | |
5716 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5717 | goto tls_gdld_hi; | |
5718 | break; | |
5719 | ||
5720 | case R_PPC_GOT_TLSLD16_HI: | |
5721 | case R_PPC_GOT_TLSLD16_HA: | |
5722 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5723 | { | |
5724 | tls_gdld_hi: | |
5725 | if ((tls_mask & tls_gd) != 0) | |
5726 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
5727 | + R_PPC_GOT_TPREL16); | |
5728 | else | |
5729 | { | |
5730 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
5731 | rel->r_offset -= 2; | |
5732 | r_type = R_PPC_NONE; | |
5733 | } | |
5734 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5735 | } | |
5736 | break; | |
5737 | ||
5738 | case R_PPC_GOT_TLSGD16: | |
5739 | case R_PPC_GOT_TLSGD16_LO: | |
5740 | tls_gd = TLS_TPRELGD; | |
5741 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5742 | goto tls_get_addr_check; | |
5743 | break; | |
5744 | ||
5745 | case R_PPC_GOT_TLSLD16: | |
5746 | case R_PPC_GOT_TLSLD16_LO: | |
5747 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5748 | { | |
5749 | tls_get_addr_check: | |
5750 | if (rel + 1 < relend) | |
5751 | { | |
5752 | enum elf_ppc_reloc_type r_type2; | |
5753 | unsigned long r_symndx2; | |
5754 | struct elf_link_hash_entry *h2; | |
87d243f1 | 5755 | bfd_vma insn1, insn2; |
7619e7c7 AM |
5756 | bfd_vma offset; |
5757 | ||
5758 | /* The next instruction should be a call to | |
5759 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 5760 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
5761 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
5762 | if (r_symndx2 < symtab_hdr->sh_info | |
5763 | || (r_type2 != R_PPC_REL14 | |
5764 | && r_type2 != R_PPC_REL14_BRTAKEN | |
5765 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
5766 | && r_type2 != R_PPC_REL24 | |
5767 | && r_type2 != R_PPC_PLTREL24)) | |
5768 | break; | |
5769 | ||
5770 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
5771 | while (h2->root.type == bfd_link_hash_indirect | |
5772 | || h2->root.type == bfd_link_hash_warning) | |
5773 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
5774 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
5775 | break; | |
5776 | ||
5777 | /* OK, it checks out. Replace the call. */ | |
5778 | offset = rel[1].r_offset; | |
5779 | insn1 = bfd_get_32 (output_bfd, | |
5780 | contents + rel->r_offset - 2); | |
7619e7c7 AM |
5781 | if ((tls_mask & tls_gd) != 0) |
5782 | { | |
5783 | /* IE */ | |
5784 | insn1 &= (1 << 26) - 1; | |
5785 | insn1 |= 32 << 26; /* lwz */ | |
5786 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
5787 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
5788 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
5789 | + R_PPC_GOT_TPREL16); | |
5790 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5791 | } | |
5792 | else | |
5793 | { | |
5794 | /* LE */ | |
5795 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
5796 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
5797 | if (tls_gd == 0) | |
5798 | { | |
5799 | /* Was an LD reloc. */ | |
5800 | r_symndx = 0; | |
e1918d23 AM |
5801 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
5802 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
5803 | } |
5804 | r_type = R_PPC_TPREL16_HA; | |
5805 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5806 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
5807 | R_PPC_TPREL16_LO); | |
5808 | rel[1].r_offset += 2; | |
5809 | } | |
7619e7c7 AM |
5810 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); |
5811 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7619e7c7 AM |
5812 | if (tls_gd == 0) |
5813 | { | |
5814 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 5815 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
5816 | rel--; |
5817 | continue; | |
5818 | } | |
5819 | } | |
252b5132 | 5820 | } |
7619e7c7 AM |
5821 | break; |
5822 | } | |
5823 | ||
5824 | /* Handle other relocations that tweak non-addend part of insn. */ | |
5825 | branch_bit = 0; | |
5826 | switch (r_type) | |
5827 | { | |
5828 | default: | |
5829 | break; | |
5830 | ||
5831 | /* Branch taken prediction relocations. */ | |
5832 | case R_PPC_ADDR14_BRTAKEN: | |
5833 | case R_PPC_REL14_BRTAKEN: | |
5834 | branch_bit = BRANCH_PREDICT_BIT; | |
5835 | /* Fall thru */ | |
5836 | ||
4cc11e76 | 5837 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
5838 | case R_PPC_ADDR14_BRNTAKEN: |
5839 | case R_PPC_REL14_BRNTAKEN: | |
5840 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5841 | insn &= ~BRANCH_PREDICT_BIT; | |
5842 | insn |= branch_bit; | |
5843 | ||
5844 | from = (rel->r_offset | |
5845 | + input_section->output_offset | |
5846 | + input_section->output_section->vma); | |
5847 | ||
5848 | /* Invert 'y' bit if not the default. */ | |
5849 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
5850 | insn ^= BRANCH_PREDICT_BIT; | |
5851 | ||
5852 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5853 | break; | |
252b5132 RH |
5854 | } |
5855 | ||
7619e7c7 AM |
5856 | addend = rel->r_addend; |
5857 | tls_type = 0; | |
5858 | howto = NULL; | |
55fd94b0 AM |
5859 | if (r_type < R_PPC_max) |
5860 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 5861 | switch (r_type) |
252b5132 RH |
5862 | { |
5863 | default: | |
7619e7c7 | 5864 | (*_bfd_error_handler) |
d003868e AM |
5865 | (_("%B: unknown relocation type %d for symbol %s"), |
5866 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
5867 | |
5868 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5869 | ret = FALSE; |
252b5132 RH |
5870 | continue; |
5871 | ||
7619e7c7 AM |
5872 | case R_PPC_NONE: |
5873 | case R_PPC_TLS: | |
5874 | case R_PPC_EMB_MRKREF: | |
5875 | case R_PPC_GNU_VTINHERIT: | |
5876 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
5877 | continue; |
5878 | ||
7619e7c7 AM |
5879 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
5880 | address in the GOT as relocation value instead of the | |
5881 | symbol's value itself. Also, create a GOT entry for the | |
5882 | symbol and put the symbol value there. */ | |
5883 | case R_PPC_GOT_TLSGD16: | |
5884 | case R_PPC_GOT_TLSGD16_LO: | |
5885 | case R_PPC_GOT_TLSGD16_HI: | |
5886 | case R_PPC_GOT_TLSGD16_HA: | |
5887 | tls_type = TLS_TLS | TLS_GD; | |
5888 | goto dogot; | |
5889 | ||
5890 | case R_PPC_GOT_TLSLD16: | |
5891 | case R_PPC_GOT_TLSLD16_LO: | |
5892 | case R_PPC_GOT_TLSLD16_HI: | |
5893 | case R_PPC_GOT_TLSLD16_HA: | |
5894 | tls_type = TLS_TLS | TLS_LD; | |
5895 | goto dogot; | |
5896 | ||
5897 | case R_PPC_GOT_TPREL16: | |
5898 | case R_PPC_GOT_TPREL16_LO: | |
5899 | case R_PPC_GOT_TPREL16_HI: | |
5900 | case R_PPC_GOT_TPREL16_HA: | |
5901 | tls_type = TLS_TLS | TLS_TPREL; | |
5902 | goto dogot; | |
5903 | ||
5904 | case R_PPC_GOT_DTPREL16: | |
5905 | case R_PPC_GOT_DTPREL16_LO: | |
5906 | case R_PPC_GOT_DTPREL16_HI: | |
5907 | case R_PPC_GOT_DTPREL16_HA: | |
5908 | tls_type = TLS_TLS | TLS_DTPREL; | |
5909 | goto dogot; | |
5910 | ||
5911 | case R_PPC_GOT16: | |
5912 | case R_PPC_GOT16_LO: | |
5913 | case R_PPC_GOT16_HI: | |
5914 | case R_PPC_GOT16_HA: | |
5915 | dogot: | |
5916 | { | |
5917 | /* Relocation is to the entry for this symbol in the global | |
5918 | offset table. */ | |
5919 | bfd_vma off; | |
5920 | bfd_vma *offp; | |
5921 | unsigned long indx; | |
5922 | ||
5923 | if (htab->got == NULL) | |
5924 | abort (); | |
5925 | ||
5926 | indx = 0; | |
5927 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 5928 | && (h == NULL |
f5385ebf | 5929 | || !h->def_dynamic)) |
7619e7c7 AM |
5930 | offp = &htab->tlsld_got.offset; |
5931 | else if (h != NULL) | |
5932 | { | |
5933 | bfd_boolean dyn; | |
5934 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 5935 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
5936 | || (info->shared |
5937 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
5938 | /* This is actually a static link, or it is a | |
5939 | -Bsymbolic link and the symbol is defined | |
5940 | locally, or the symbol was forced to be local | |
5941 | because of a version file. */ | |
5942 | ; | |
5943 | else | |
5944 | { | |
5945 | indx = h->dynindx; | |
5946 | unresolved_reloc = FALSE; | |
5947 | } | |
5948 | offp = &h->got.offset; | |
5949 | } | |
5950 | else | |
5951 | { | |
5952 | if (local_got_offsets == NULL) | |
5953 | abort (); | |
5954 | offp = &local_got_offsets[r_symndx]; | |
5955 | } | |
5956 | ||
5957 | /* The offset must always be a multiple of 4. We use the | |
5958 | least significant bit to record whether we have already | |
5959 | processed this entry. */ | |
5960 | off = *offp; | |
5961 | if ((off & 1) != 0) | |
5962 | off &= ~1; | |
5963 | else | |
5964 | { | |
70bccea4 AM |
5965 | unsigned int tls_m = (tls_mask |
5966 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
5967 | | TLS_TPREL | TLS_TPRELGD)); | |
5968 | ||
5969 | if (offp == &htab->tlsld_got.offset) | |
5970 | tls_m = TLS_LD; | |
5971 | else if (h == NULL | |
f5385ebf | 5972 | || !h->def_dynamic) |
70bccea4 AM |
5973 | tls_m &= ~TLS_LD; |
5974 | ||
5975 | /* We might have multiple got entries for this sym. | |
5976 | Initialize them all. */ | |
5977 | do | |
7619e7c7 | 5978 | { |
70bccea4 AM |
5979 | int tls_ty = 0; |
5980 | ||
5981 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 5982 | { |
70bccea4 AM |
5983 | tls_ty = TLS_TLS | TLS_LD; |
5984 | tls_m &= ~TLS_LD; | |
5985 | } | |
5986 | else if ((tls_m & TLS_GD) != 0) | |
5987 | { | |
5988 | tls_ty = TLS_TLS | TLS_GD; | |
5989 | tls_m &= ~TLS_GD; | |
5990 | } | |
5991 | else if ((tls_m & TLS_DTPREL) != 0) | |
5992 | { | |
5993 | tls_ty = TLS_TLS | TLS_DTPREL; | |
5994 | tls_m &= ~TLS_DTPREL; | |
5995 | } | |
5996 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5997 | { | |
5998 | tls_ty = TLS_TLS | TLS_TPREL; | |
5999 | tls_m = 0; | |
7619e7c7 | 6000 | } |
7619e7c7 | 6001 | |
70bccea4 | 6002 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
6003 | if ((info->shared || indx != 0) |
6004 | && (h == NULL | |
6005 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6006 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 6007 | { |
70bccea4 AM |
6008 | outrel.r_offset = (htab->got->output_section->vma |
6009 | + htab->got->output_offset | |
6010 | + off); | |
e515b051 | 6011 | outrel.r_addend = 0; |
70bccea4 AM |
6012 | if (tls_ty & (TLS_LD | TLS_GD)) |
6013 | { | |
6014 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
6015 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6016 | { | |
6017 | loc = htab->relgot->contents; | |
6018 | loc += (htab->relgot->reloc_count++ | |
6019 | * sizeof (Elf32_External_Rela)); | |
6020 | bfd_elf32_swap_reloca_out (output_bfd, | |
6021 | &outrel, loc); | |
e515b051 | 6022 | outrel.r_offset += 4; |
70bccea4 AM |
6023 | outrel.r_info |
6024 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
6025 | } |
6026 | } | |
6027 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
6028 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
6029 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
6030 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
6031 | else if (indx == 0) | |
6032 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
6033 | else | |
6034 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 6035 | if (indx == 0) |
e515b051 AM |
6036 | { |
6037 | outrel.r_addend += relocation; | |
6038 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 6039 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 6040 | } |
70bccea4 AM |
6041 | loc = htab->relgot->contents; |
6042 | loc += (htab->relgot->reloc_count++ | |
6043 | * sizeof (Elf32_External_Rela)); | |
6044 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
6045 | } |
6046 | ||
70bccea4 AM |
6047 | /* Init the .got section contents if we're not |
6048 | emitting a reloc. */ | |
6049 | else | |
7619e7c7 | 6050 | { |
70bccea4 AM |
6051 | bfd_vma value = relocation; |
6052 | ||
7b609f53 AM |
6053 | if (tls_ty == (TLS_TLS | TLS_LD)) |
6054 | value = 1; | |
6055 | else if (tls_ty != 0) | |
70bccea4 | 6056 | { |
e1918d23 | 6057 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 6058 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 6059 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 6060 | |
7b609f53 AM |
6061 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6062 | { | |
6063 | bfd_put_32 (output_bfd, value, | |
6064 | htab->got->contents + off + 4); | |
6065 | value = 1; | |
6066 | } | |
70bccea4 | 6067 | } |
70bccea4 AM |
6068 | bfd_put_32 (output_bfd, value, |
6069 | htab->got->contents + off); | |
7619e7c7 | 6070 | } |
70bccea4 AM |
6071 | |
6072 | off += 4; | |
6073 | if (tls_ty & (TLS_LD | TLS_GD)) | |
6074 | off += 4; | |
7619e7c7 | 6075 | } |
70bccea4 AM |
6076 | while (tls_m != 0); |
6077 | ||
6078 | off = *offp; | |
6079 | *offp = off | 1; | |
7619e7c7 AM |
6080 | } |
6081 | ||
6082 | if (off >= (bfd_vma) -2) | |
6083 | abort (); | |
6084 | ||
70bccea4 AM |
6085 | if ((tls_type & TLS_TLS) != 0) |
6086 | { | |
6087 | if (tls_type != (TLS_TLS | TLS_LD)) | |
6088 | { | |
6089 | if ((tls_mask & TLS_LD) != 0 | |
6090 | && !(h == NULL | |
f5385ebf | 6091 | || !h->def_dynamic)) |
70bccea4 AM |
6092 | off += 8; |
6093 | if (tls_type != (TLS_TLS | TLS_GD)) | |
6094 | { | |
6095 | if ((tls_mask & TLS_GD) != 0) | |
6096 | off += 8; | |
6097 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
6098 | { | |
6099 | if ((tls_mask & TLS_DTPREL) != 0) | |
6100 | off += 4; | |
6101 | } | |
6102 | } | |
6103 | } | |
6104 | } | |
6105 | ||
3b36f7e6 AM |
6106 | relocation = htab->got->output_offset + off; |
6107 | relocation -= htab->elf.hgot->root.u.def.value; | |
7619e7c7 AM |
6108 | |
6109 | /* Addends on got relocations don't make much sense. | |
6110 | x+off@got is actually x@got+off, and since the got is | |
6111 | generated by a hash table traversal, the value in the | |
6112 | got at entry m+n bears little relation to the entry m. */ | |
6113 | if (addend != 0) | |
6114 | (*_bfd_error_handler) | |
d003868e AM |
6115 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
6116 | input_bfd, | |
6117 | input_section, | |
7619e7c7 | 6118 | (long) rel->r_offset, |
7b609f53 | 6119 | howto->name, |
7619e7c7 AM |
6120 | sym_name); |
6121 | } | |
70bccea4 | 6122 | break; |
7619e7c7 | 6123 | |
252b5132 | 6124 | /* Relocations that need no special processing. */ |
7619e7c7 | 6125 | case R_PPC_LOCAL24PC: |
252b5132 RH |
6126 | /* It makes no sense to point a local relocation |
6127 | at a symbol not in this object. */ | |
7b609f53 | 6128 | if (unresolved_reloc) |
252b5132 | 6129 | { |
464e1740 ILT |
6130 | if (! (*info->callbacks->undefined_symbol) (info, |
6131 | h->root.root.string, | |
6132 | input_bfd, | |
6133 | input_section, | |
5cc7c785 | 6134 | rel->r_offset, |
b34976b6 AM |
6135 | TRUE)) |
6136 | return FALSE; | |
252b5132 RH |
6137 | continue; |
6138 | } | |
6139 | break; | |
6140 | ||
7619e7c7 AM |
6141 | case R_PPC_DTPREL16: |
6142 | case R_PPC_DTPREL16_LO: | |
6143 | case R_PPC_DTPREL16_HI: | |
6144 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 6145 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6146 | break; |
6147 | ||
70bccea4 AM |
6148 | /* Relocations that may need to be propagated if this is a shared |
6149 | object. */ | |
7619e7c7 AM |
6150 | case R_PPC_TPREL16: |
6151 | case R_PPC_TPREL16_LO: | |
6152 | case R_PPC_TPREL16_HI: | |
6153 | case R_PPC_TPREL16_HA: | |
e1918d23 | 6154 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6155 | /* The TPREL16 relocs shouldn't really be used in shared |
6156 | libs as they will result in DT_TEXTREL being set, but | |
6157 | support them anyway. */ | |
6158 | goto dodyn; | |
6159 | ||
6160 | case R_PPC_TPREL32: | |
e1918d23 | 6161 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6162 | goto dodyn; |
6163 | ||
6164 | case R_PPC_DTPREL32: | |
e1918d23 | 6165 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6166 | goto dodyn; |
6167 | ||
e515b051 AM |
6168 | case R_PPC_DTPMOD32: |
6169 | relocation = 1; | |
6170 | addend = 0; | |
6171 | goto dodyn; | |
6172 | ||
d7128ce4 AM |
6173 | case R_PPC_REL16: |
6174 | case R_PPC_REL16_LO: | |
6175 | case R_PPC_REL16_HI: | |
6176 | case R_PPC_REL16_HA: | |
6177 | break; | |
6178 | ||
7619e7c7 AM |
6179 | case R_PPC_REL24: |
6180 | case R_PPC_REL32: | |
6181 | case R_PPC_REL14: | |
6182 | case R_PPC_REL14_BRTAKEN: | |
6183 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
6184 | /* If these relocations are not to a named symbol, they can be |
6185 | handled right here, no need to bother the dynamic linker. */ | |
f6c52c13 | 6186 | if (SYMBOL_REFERENCES_LOCAL (info, h) |
3b36f7e6 | 6187 | || h == htab->elf.hgot) |
252b5132 | 6188 | break; |
70bccea4 | 6189 | /* fall through */ |
252b5132 | 6190 | |
70bccea4 AM |
6191 | /* Relocations that always need to be propagated if this is a shared |
6192 | object. */ | |
7619e7c7 AM |
6193 | case R_PPC_ADDR32: |
6194 | case R_PPC_ADDR24: | |
6195 | case R_PPC_ADDR16: | |
6196 | case R_PPC_ADDR16_LO: | |
6197 | case R_PPC_ADDR16_HI: | |
6198 | case R_PPC_ADDR16_HA: | |
6199 | case R_PPC_ADDR14: | |
6200 | case R_PPC_ADDR14_BRTAKEN: | |
6201 | case R_PPC_ADDR14_BRNTAKEN: | |
6202 | case R_PPC_UADDR32: | |
6203 | case R_PPC_UADDR16: | |
ee05f2fe AM |
6204 | /* r_symndx will be zero only for relocs against symbols |
6205 | from removed linkonce sections, or sections discarded by | |
6206 | a linker script. */ | |
7619e7c7 | 6207 | dodyn: |
ee05f2fe AM |
6208 | if (r_symndx == 0) |
6209 | break; | |
6210 | /* Fall thru. */ | |
6211 | ||
c87b5a93 AM |
6212 | if ((input_section->flags & SEC_ALLOC) == 0) |
6213 | break; | |
6214 | /* Fall thru. */ | |
6215 | ||
ee05f2fe | 6216 | if ((info->shared |
4e795f50 AM |
6217 | && (h == NULL |
6218 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6219 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe | 6220 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 6221 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
6222 | || (ELIMINATE_COPY_RELOCS |
6223 | && !info->shared | |
ee05f2fe AM |
6224 | && h != NULL |
6225 | && h->dynindx != -1 | |
f5385ebf AM |
6226 | && !h->non_got_ref |
6227 | && h->def_dynamic | |
6228 | && !h->def_regular)) | |
252b5132 | 6229 | { |
0bb2d96a | 6230 | int skip; |
252b5132 RH |
6231 | |
6232 | #ifdef DEBUG | |
55fd94b0 AM |
6233 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
6234 | "create relocation for %s\n", | |
70bccea4 AM |
6235 | (h && h->root.root.string |
6236 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
6237 | #endif |
6238 | ||
6239 | /* When generating a shared object, these relocations | |
70bccea4 AM |
6240 | are copied into the output file to be resolved at run |
6241 | time. */ | |
252b5132 RH |
6242 | if (sreloc == NULL) |
6243 | { | |
6244 | const char *name; | |
6245 | ||
6246 | name = (bfd_elf_string_from_elf_section | |
6247 | (input_bfd, | |
6248 | elf_elfheader (input_bfd)->e_shstrndx, | |
6249 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
6250 | if (name == NULL) | |
b34976b6 | 6251 | return FALSE; |
252b5132 RH |
6252 | |
6253 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
6254 | && strcmp (bfd_get_section_name (input_bfd, | |
6255 | input_section), | |
6256 | name + 5) == 0); | |
6257 | ||
7619e7c7 | 6258 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
6259 | BFD_ASSERT (sreloc != NULL); |
6260 | } | |
6261 | ||
0bb2d96a | 6262 | skip = 0; |
252b5132 | 6263 | |
c629eae0 JJ |
6264 | outrel.r_offset = |
6265 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6266 | rel->r_offset); | |
0bb2d96a JJ |
6267 | if (outrel.r_offset == (bfd_vma) -1 |
6268 | || outrel.r_offset == (bfd_vma) -2) | |
6269 | skip = (int) outrel.r_offset; | |
252b5132 RH |
6270 | outrel.r_offset += (input_section->output_section->vma |
6271 | + input_section->output_offset); | |
6272 | ||
6273 | if (skip) | |
6274 | memset (&outrel, 0, sizeof outrel); | |
f6c52c13 | 6275 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 6276 | { |
7619e7c7 | 6277 | unresolved_reloc = FALSE; |
252b5132 RH |
6278 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
6279 | outrel.r_addend = rel->r_addend; | |
6280 | } | |
6281 | else | |
6282 | { | |
47388f4c AM |
6283 | outrel.r_addend = relocation + rel->r_addend; |
6284 | ||
252b5132 | 6285 | if (r_type == R_PPC_ADDR32) |
47388f4c | 6286 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
6287 | else |
6288 | { | |
6289 | long indx; | |
6290 | ||
47388f4c | 6291 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
6292 | indx = 0; |
6293 | else if (sec == NULL || sec->owner == NULL) | |
6294 | { | |
6295 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6296 | return FALSE; |
252b5132 RH |
6297 | } |
6298 | else | |
6299 | { | |
6300 | asection *osec; | |
6301 | ||
47388f4c AM |
6302 | /* We are turning this relocation into one |
6303 | against a section symbol. It would be | |
6304 | proper to subtract the symbol's value, | |
6305 | osec->vma, from the emitted reloc addend, | |
6306 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
6307 | osec = sec->output_section; |
6308 | indx = elf_section_data (osec)->dynindx; | |
8da6118f | 6309 | BFD_ASSERT (indx > 0); |
252b5132 RH |
6310 | #ifdef DEBUG |
6311 | if (indx <= 0) | |
55fd94b0 AM |
6312 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
6313 | indx, osec->name, osec->flags, | |
6314 | h->root.root.string); | |
252b5132 RH |
6315 | #endif |
6316 | } | |
6317 | ||
6318 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
6319 | } |
6320 | } | |
6321 | ||
947216bf AM |
6322 | loc = sreloc->contents; |
6323 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
6324 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 6325 | |
2243deae | 6326 | if (skip == -1) |
252b5132 | 6327 | continue; |
2243deae L |
6328 | |
6329 | /* This reloc will be computed at runtime. We clear the memory | |
6330 | so that it contains predictable value. */ | |
6331 | if (! skip | |
6332 | && ((input_section->flags & SEC_ALLOC) != 0 | |
6333 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
6334 | { | |
6335 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
6336 | addend = 0; | |
6337 | break; | |
6338 | } | |
252b5132 | 6339 | } |
252b5132 RH |
6340 | break; |
6341 | ||
b4a38de6 AM |
6342 | case R_PPC_RELAX32PC_PLT: |
6343 | case R_PPC_RELAX32_PLT: | |
a6aa5195 AM |
6344 | { |
6345 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
6346 | ||
6347 | if (!htab->old_plt) | |
6348 | relocation = (htab->glink->output_section->vma | |
6349 | + htab->glink->output_offset | |
6350 | + ent->glink_offset); | |
6351 | else | |
6352 | relocation = (htab->plt->output_section->vma | |
6353 | + htab->plt->output_offset | |
6354 | + ent->plt.offset); | |
6355 | addend = 0; | |
6356 | } | |
b4a38de6 AM |
6357 | if (r_type == R_PPC_RELAX32_PLT) |
6358 | goto relax32; | |
6359 | /* Fall thru */ | |
6360 | ||
f31a141e AM |
6361 | case R_PPC_RELAX32PC: |
6362 | relocation -= (input_section->output_section->vma | |
6363 | + input_section->output_offset | |
6364 | + rel->r_offset - 4); | |
6365 | /* Fall thru */ | |
b4a38de6 | 6366 | |
deaaf2f3 | 6367 | case R_PPC_RELAX32: |
b4a38de6 | 6368 | relax32: |
9abc968f AM |
6369 | { |
6370 | unsigned long t0; | |
6371 | unsigned long t1; | |
6372 | ||
6373 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
6374 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
6375 | ||
6376 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
6377 | and R_PPC_ADDR16_LO here. */ | |
6378 | t0 &= ~0xffff; | |
6379 | t1 &= ~0xffff; | |
6380 | ||
6381 | /* t0 is HA, t1 is LO */ | |
6382 | relocation += addend; | |
6383 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
6384 | t1 |= relocation & 0xffff; | |
6385 | ||
6386 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
6387 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
6388 | } | |
8517fae7 | 6389 | continue; |
deaaf2f3 | 6390 | |
70bccea4 | 6391 | /* Indirect .sdata relocation. */ |
7619e7c7 | 6392 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 6393 | BFD_ASSERT (htab->sdata[0].section != NULL); |
7619e7c7 | 6394 | relocation |
76750a2f AM |
6395 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
6396 | h, relocation, rel); | |
252b5132 RH |
6397 | break; |
6398 | ||
70bccea4 | 6399 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 6400 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 6401 | BFD_ASSERT (htab->sdata[1].section != NULL); |
7619e7c7 | 6402 | relocation |
76750a2f AM |
6403 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
6404 | h, relocation, rel); | |
252b5132 RH |
6405 | break; |
6406 | ||
70bccea4 AM |
6407 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
6408 | section, not the actual VMA. This is appropriate when generating | |
6409 | an embedded ELF object, for which the .got section acts like the | |
6410 | AIX .toc section. */ | |
7619e7c7 | 6411 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 6412 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
6413 | BFD_ASSERT (bfd_is_und_section (sec) |
6414 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 6415 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 6416 | |
70bccea4 | 6417 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
6418 | break; |
6419 | ||
7619e7c7 | 6420 | case R_PPC_PLTREL24: |
252b5132 | 6421 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 6422 | procedure linkage table. */ |
a6aa5195 AM |
6423 | { |
6424 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
252b5132 | 6425 | |
a6aa5195 AM |
6426 | addend = 0; |
6427 | if (ent == NULL | |
6428 | || htab->plt == NULL) | |
6429 | { | |
6430 | /* We didn't make a PLT entry for this symbol. This | |
6431 | happens when statically linking PIC code, or when | |
6432 | using -Bsymbolic. */ | |
6433 | break; | |
6434 | } | |
252b5132 | 6435 | |
a6aa5195 AM |
6436 | unresolved_reloc = FALSE; |
6437 | if (!htab->old_plt) | |
6438 | relocation = (htab->glink->output_section->vma | |
6439 | + htab->glink->output_offset | |
6440 | + ent->glink_offset); | |
6441 | else | |
6442 | relocation = (htab->plt->output_section->vma | |
6443 | + htab->plt->output_offset | |
6444 | + ent->plt.offset); | |
6445 | } | |
8da6118f | 6446 | break; |
252b5132 | 6447 | |
70bccea4 | 6448 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 6449 | case R_PPC_SDAREL16: |
252b5132 RH |
6450 | { |
6451 | const char *name; | |
046183de | 6452 | struct elf_link_hash_entry *sh; |
252b5132 | 6453 | |
55fd94b0 | 6454 | BFD_ASSERT (sec != NULL); |
252b5132 | 6455 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
6456 | if (! ((strncmp (name, ".sdata", 6) == 0 |
6457 | && (name[6] == 0 || name[6] == '.')) | |
6458 | || (strncmp (name, ".sbss", 5) == 0 | |
6459 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 | 6460 | { |
55fd94b0 | 6461 | (*_bfd_error_handler) |
d003868e | 6462 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6463 | "in the wrong output section (%s)"), |
d003868e | 6464 | input_bfd, |
55fd94b0 AM |
6465 | sym_name, |
6466 | howto->name, | |
6467 | name); | |
252b5132 | 6468 | } |
046183de AM |
6469 | sh = htab->sdata[0].sym; |
6470 | addend -= (sh->root.u.def.value | |
6471 | + sh->root.u.def.section->output_offset | |
6472 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6473 | } |
6474 | break; | |
6475 | ||
70bccea4 | 6476 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 6477 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
6478 | { |
6479 | const char *name; | |
046183de | 6480 | struct elf_link_hash_entry *sh; |
252b5132 | 6481 | |
55fd94b0 | 6482 | BFD_ASSERT (sec != NULL); |
252b5132 | 6483 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
6484 | if (! (strncmp (name, ".sdata2", 7) == 0 |
6485 | || strncmp (name, ".sbss2", 6) == 0)) | |
252b5132 | 6486 | { |
55fd94b0 | 6487 | (*_bfd_error_handler) |
d003868e | 6488 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6489 | "in the wrong output section (%s)"), |
d003868e | 6490 | input_bfd, |
55fd94b0 AM |
6491 | sym_name, |
6492 | howto->name, | |
6493 | name); | |
c3668558 | 6494 | |
252b5132 | 6495 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6496 | ret = FALSE; |
252b5132 RH |
6497 | continue; |
6498 | } | |
046183de AM |
6499 | sh = htab->sdata[1].sym; |
6500 | addend -= (sh->root.u.def.value | |
6501 | + sh->root.u.def.section->output_offset | |
6502 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6503 | } |
6504 | break; | |
6505 | ||
70bccea4 | 6506 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
6507 | case R_PPC_EMB_SDA21: |
6508 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
6509 | { |
6510 | const char *name; | |
6511 | int reg; | |
046183de | 6512 | struct elf_link_hash_entry *sh; |
252b5132 | 6513 | |
55fd94b0 | 6514 | BFD_ASSERT (sec != NULL); |
252b5132 | 6515 | name = bfd_get_section_name (abfd, sec->output_section); |
b34976b6 | 6516 | if (((strncmp (name, ".sdata", 6) == 0 |
5f819128 AM |
6517 | && (name[6] == 0 || name[6] == '.')) |
6518 | || (strncmp (name, ".sbss", 5) == 0 | |
6519 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 RH |
6520 | { |
6521 | reg = 13; | |
046183de AM |
6522 | sh = htab->sdata[0].sym; |
6523 | addend -= (sh->root.u.def.value | |
6524 | + sh->root.u.def.section->output_offset | |
6525 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6526 | } |
6527 | ||
5f819128 AM |
6528 | else if (strncmp (name, ".sdata2", 7) == 0 |
6529 | || strncmp (name, ".sbss2", 6) == 0) | |
252b5132 RH |
6530 | { |
6531 | reg = 2; | |
046183de AM |
6532 | sh = htab->sdata[1].sym; |
6533 | addend -= (sh->root.u.def.value | |
6534 | + sh->root.u.def.section->output_offset | |
6535 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6536 | } |
6537 | ||
8da6118f KH |
6538 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
6539 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
6540 | { |
6541 | reg = 0; | |
6542 | } | |
6543 | ||
6544 | else | |
6545 | { | |
55fd94b0 | 6546 | (*_bfd_error_handler) |
d003868e | 6547 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6548 | "in the wrong output section (%s)"), |
d003868e | 6549 | input_bfd, |
55fd94b0 AM |
6550 | sym_name, |
6551 | howto->name, | |
6552 | name); | |
252b5132 RH |
6553 | |
6554 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6555 | ret = FALSE; |
252b5132 RH |
6556 | continue; |
6557 | } | |
6558 | ||
6559 | if (r_type == R_PPC_EMB_SDA21) | |
6560 | { /* fill in register field */ | |
7619e7c7 | 6561 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 6562 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 6563 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
6564 | } |
6565 | } | |
6566 | break; | |
6567 | ||
70bccea4 | 6568 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
6569 | case R_PPC_SECTOFF: |
6570 | case R_PPC_SECTOFF_LO: | |
6571 | case R_PPC_SECTOFF_HI: | |
6572 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 6573 | BFD_ASSERT (sec != NULL); |
252b5132 | 6574 | addend -= sec->output_section->vma; |
252b5132 RH |
6575 | break; |
6576 | ||
70bccea4 | 6577 | /* Negative relocations. */ |
7619e7c7 AM |
6578 | case R_PPC_EMB_NADDR32: |
6579 | case R_PPC_EMB_NADDR16: | |
6580 | case R_PPC_EMB_NADDR16_LO: | |
6581 | case R_PPC_EMB_NADDR16_HI: | |
6582 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 6583 | addend -= 2 * relocation; |
252b5132 RH |
6584 | break; |
6585 | ||
7619e7c7 AM |
6586 | case R_PPC_COPY: |
6587 | case R_PPC_GLOB_DAT: | |
6588 | case R_PPC_JMP_SLOT: | |
6589 | case R_PPC_RELATIVE: | |
6590 | case R_PPC_PLT32: | |
6591 | case R_PPC_PLTREL32: | |
6592 | case R_PPC_PLT16_LO: | |
6593 | case R_PPC_PLT16_HI: | |
6594 | case R_PPC_PLT16_HA: | |
6595 | case R_PPC_ADDR30: | |
6596 | case R_PPC_EMB_RELSEC16: | |
6597 | case R_PPC_EMB_RELST_LO: | |
6598 | case R_PPC_EMB_RELST_HI: | |
6599 | case R_PPC_EMB_RELST_HA: | |
6600 | case R_PPC_EMB_BIT_FLD: | |
6601 | (*_bfd_error_handler) | |
d003868e AM |
6602 | (_("%B: relocation %s is not yet supported for symbol %s."), |
6603 | input_bfd, | |
7619e7c7 AM |
6604 | howto->name, |
6605 | sym_name); | |
252b5132 RH |
6606 | |
6607 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 6608 | ret = FALSE; |
252b5132 | 6609 | continue; |
7619e7c7 | 6610 | } |
252b5132 | 6611 | |
7619e7c7 AM |
6612 | /* Do any further special processing. */ |
6613 | switch (r_type) | |
6614 | { | |
6615 | default: | |
6616 | break; | |
6617 | ||
6618 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 6619 | case R_PPC_REL16_HA: |
7619e7c7 AM |
6620 | case R_PPC_GOT16_HA: |
6621 | case R_PPC_PLT16_HA: | |
6622 | case R_PPC_SECTOFF_HA: | |
6623 | case R_PPC_TPREL16_HA: | |
6624 | case R_PPC_DTPREL16_HA: | |
6625 | case R_PPC_GOT_TLSGD16_HA: | |
6626 | case R_PPC_GOT_TLSLD16_HA: | |
6627 | case R_PPC_GOT_TPREL16_HA: | |
6628 | case R_PPC_GOT_DTPREL16_HA: | |
6629 | case R_PPC_EMB_NADDR16_HA: | |
6630 | case R_PPC_EMB_RELST_HA: | |
6631 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 6632 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
6633 | 'sec' would be NULL, and we should leave the symbol |
6634 | alone (it will be set to zero elsewhere in the link). */ | |
6635 | if (sec != NULL) | |
e515b051 AM |
6636 | /* Add 0x10000 if sign bit in 0:15 is set. |
6637 | Bits 0:15 are not used. */ | |
6638 | addend += 0x8000; | |
7619e7c7 | 6639 | break; |
252b5132 RH |
6640 | } |
6641 | ||
252b5132 | 6642 | #ifdef DEBUG |
55fd94b0 AM |
6643 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
6644 | "offset = %ld, addend = %ld\n", | |
252b5132 | 6645 | howto->name, |
8da6118f | 6646 | (int) r_type, |
252b5132 RH |
6647 | sym_name, |
6648 | r_symndx, | |
7619e7c7 | 6649 | (long) rel->r_offset, |
8da6118f | 6650 | (long) addend); |
252b5132 RH |
6651 | #endif |
6652 | ||
7619e7c7 AM |
6653 | if (unresolved_reloc |
6654 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 6655 | && h->def_dynamic)) |
7619e7c7 AM |
6656 | { |
6657 | (*_bfd_error_handler) | |
d003868e AM |
6658 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
6659 | input_bfd, | |
6660 | input_section, | |
7619e7c7 | 6661 | (long) rel->r_offset, |
7b609f53 | 6662 | howto->name, |
7619e7c7 AM |
6663 | sym_name); |
6664 | ret = FALSE; | |
6665 | } | |
6666 | ||
252b5132 RH |
6667 | r = _bfd_final_link_relocate (howto, |
6668 | input_bfd, | |
6669 | input_section, | |
6670 | contents, | |
7619e7c7 | 6671 | rel->r_offset, |
252b5132 RH |
6672 | relocation, |
6673 | addend); | |
6674 | ||
7619e7c7 | 6675 | if (r != bfd_reloc_ok) |
252b5132 | 6676 | { |
7619e7c7 | 6677 | if (r == bfd_reloc_overflow) |
252b5132 | 6678 | { |
7619e7c7 AM |
6679 | if (warned) |
6680 | continue; | |
6681 | if (h != NULL | |
6682 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
6683 | && howto->pc_relative) |
6684 | { | |
6685 | /* Assume this is a call protected by other code that | |
6686 | detect the symbol is undefined. If this is the case, | |
6687 | we can safely ignore the overflow. If not, the | |
6688 | program is hosed anyway, and a little warning isn't | |
6689 | going to help. */ | |
252b5132 | 6690 | |
dc1bc0c9 RH |
6691 | continue; |
6692 | } | |
252b5132 | 6693 | |
7619e7c7 | 6694 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 6695 | (h ? &h->root : NULL), |
7619e7c7 AM |
6696 | sym_name, |
6697 | howto->name, | |
6698 | rel->r_addend, | |
6699 | input_bfd, | |
6700 | input_section, | |
6701 | rel->r_offset)) | |
6702 | return FALSE; | |
dc1bc0c9 RH |
6703 | } |
6704 | else | |
6705 | { | |
7619e7c7 | 6706 | (*_bfd_error_handler) |
d003868e AM |
6707 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
6708 | input_bfd, input_section, | |
7b609f53 | 6709 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 6710 | ret = FALSE; |
252b5132 RH |
6711 | } |
6712 | } | |
6713 | } | |
6714 | ||
252b5132 RH |
6715 | #ifdef DEBUG |
6716 | fprintf (stderr, "\n"); | |
6717 | #endif | |
6718 | ||
6719 | return ret; | |
6720 | } | |
252b5132 | 6721 | \f |
a6aa5195 AM |
6722 | #define PPC_LO(v) ((v) & 0xffff) |
6723 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6724 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6725 | ||
25dbc73a AM |
6726 | /* Finish up dynamic symbol handling. We set the contents of various |
6727 | dynamic sections here. */ | |
c5fccbec | 6728 | |
b34976b6 | 6729 | static bfd_boolean |
25dbc73a AM |
6730 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
6731 | struct bfd_link_info *info, | |
6732 | struct elf_link_hash_entry *h, | |
6733 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 6734 | { |
25dbc73a | 6735 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
6736 | struct plt_entry *ent; |
6737 | bfd_boolean doneone; | |
e1a9cb8e | 6738 | |
25dbc73a AM |
6739 | #ifdef DEBUG |
6740 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
6741 | h->root.root.string); | |
6742 | #endif | |
e1a9cb8e | 6743 | |
25dbc73a AM |
6744 | htab = ppc_elf_hash_table (info); |
6745 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 6746 | |
a6aa5195 AM |
6747 | doneone = FALSE; |
6748 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6749 | if (ent->plt.offset != (bfd_vma) -1) | |
6750 | { | |
6751 | if (!doneone) | |
6752 | { | |
6753 | Elf_Internal_Rela rela; | |
6754 | bfd_byte *loc; | |
6755 | bfd_vma reloc_index; | |
e1a9cb8e | 6756 | |
9d8504b1 PB |
6757 | if (!(htab->old_plt || htab->is_vxworks)) |
6758 | reloc_index = ent->plt.offset / 4; | |
6759 | else | |
6760 | { | |
6761 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
6762 | / htab->plt_slot_size); | |
6763 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
6764 | && !htab->is_vxworks) | |
6765 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; | |
6766 | } | |
6767 | ||
a6aa5195 AM |
6768 | /* This symbol has an entry in the procedure linkage table. |
6769 | Set it up. */ | |
9d8504b1 | 6770 | if (htab->is_vxworks) |
a6aa5195 | 6771 | { |
9d8504b1 PB |
6772 | bfd_vma got_offset; |
6773 | const bfd_vma *plt_entry; | |
6774 | ||
6775 | /* The first three entries in .got.plt are reserved. */ | |
6776 | got_offset = (reloc_index + 3) * 4; | |
6777 | ||
6778 | /* Use the right PLT. */ | |
6779 | plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry | |
6780 | : ppc_elf_vxworks_plt_entry; | |
6781 | ||
6782 | /* Fill in the .plt on VxWorks. */ | |
6783 | if (info->shared) | |
6784 | { | |
6785 | bfd_vma got_offset_hi = (got_offset >> 16) | |
6786 | + ((got_offset & 0x8000) >> 15); | |
6787 | ||
6788 | bfd_put_32 (output_bfd, | |
6789 | plt_entry[0] | (got_offset_hi & 0xffff), | |
6790 | htab->plt->contents + ent->plt.offset + 0); | |
6791 | bfd_put_32 (output_bfd, | |
6792 | plt_entry[1] | (got_offset & 0xffff), | |
6793 | htab->plt->contents + ent->plt.offset + 4); | |
6794 | } | |
6795 | else | |
6796 | { | |
636ce3f5 AM |
6797 | bfd_vma got_loc |
6798 | = (got_offset | |
6799 | + htab->elf.hgot->root.u.def.value | |
6800 | + htab->elf.hgot->root.u.def.section->output_offset | |
6801 | + htab->elf.hgot->root.u.def.section->output_section->vma); | |
9d8504b1 PB |
6802 | bfd_vma got_loc_hi = (got_loc >> 16) |
6803 | + ((got_loc & 0x8000) >> 15); | |
6804 | ||
6805 | bfd_put_32 (output_bfd, | |
6806 | plt_entry[0] | (got_loc_hi & 0xffff), | |
6807 | htab->plt->contents + ent->plt.offset + 0); | |
6808 | bfd_put_32 (output_bfd, | |
6809 | plt_entry[1] | (got_loc & 0xffff), | |
6810 | htab->plt->contents + ent->plt.offset + 4); | |
6811 | } | |
6812 | ||
6813 | bfd_put_32 (output_bfd, plt_entry[2], | |
6814 | htab->plt->contents + ent->plt.offset + 8); | |
6815 | bfd_put_32 (output_bfd, plt_entry[3], | |
6816 | htab->plt->contents + ent->plt.offset + 12); | |
6817 | ||
6818 | /* This instruction is an immediate load. The value loaded is | |
6819 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
6820 | start of the .rela.plt section. The value is stored in the | |
6821 | low-order 16 bits of the load instruction. */ | |
6822 | /* NOTE: It appears that this is now an index rather than a | |
6823 | prescaled offset. */ | |
6824 | bfd_put_32 (output_bfd, | |
6825 | plt_entry[4] | reloc_index, | |
6826 | htab->plt->contents + ent->plt.offset + 16); | |
6827 | /* This instruction is a PC-relative branch whose target is | |
6828 | the start of the PLT section. The address of this branch | |
6829 | instruction is 20 bytes beyond the start of this PLT entry. | |
6830 | The address is encoded in bits 6-29, inclusive. The value | |
6831 | stored is right-shifted by two bits, permitting a 26-bit | |
6832 | offset. */ | |
6833 | bfd_put_32 (output_bfd, | |
6834 | (plt_entry[5] | |
6835 | | (-(ent->plt.offset + 20) & 0x03fffffc)), | |
6836 | htab->plt->contents + ent->plt.offset + 20); | |
6837 | bfd_put_32 (output_bfd, plt_entry[6], | |
6838 | htab->plt->contents + ent->plt.offset + 24); | |
6839 | bfd_put_32 (output_bfd, plt_entry[7], | |
6840 | htab->plt->contents + ent->plt.offset + 28); | |
6841 | ||
6842 | /* Fill in the GOT entry corresponding to this PLT slot with | |
6843 | the address immediately after the the "bctr" instruction | |
6844 | in this PLT entry. */ | |
6845 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
6846 | + htab->plt->output_offset | |
6847 | + ent->plt.offset + 16), | |
6848 | htab->sgotplt->contents + got_offset); | |
6849 | ||
6850 | if (!info->shared) | |
6851 | { | |
6852 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
6853 | loc = htab->srelplt2->contents | |
6854 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
6855 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
6856 | * sizeof (Elf32_External_Rela)); | |
6857 | ||
6858 | /* Provide the @ha relocation for the first instruction. */ | |
6859 | rela.r_offset = (htab->plt->output_section->vma | |
6860 | + htab->plt->output_offset | |
6861 | + ent->plt.offset + 2); | |
636ce3f5 | 6862 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
6863 | R_PPC_ADDR16_HA); |
6864 | rela.r_addend = got_offset; | |
6865 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6866 | loc += sizeof (Elf32_External_Rela); | |
6867 | ||
6868 | /* Provide the @l relocation for the second instruction. */ | |
6869 | rela.r_offset = (htab->plt->output_section->vma | |
6870 | + htab->plt->output_offset | |
6871 | + ent->plt.offset + 6); | |
636ce3f5 | 6872 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
6873 | R_PPC_ADDR16_LO); |
6874 | rela.r_addend = got_offset; | |
6875 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6876 | loc += sizeof (Elf32_External_Rela); | |
6877 | ||
6878 | /* Provide a relocation for the GOT entry corresponding to this | |
6879 | PLT slot. Point it at the middle of the .plt entry. */ | |
6880 | rela.r_offset = (htab->sgotplt->output_section->vma | |
6881 | + htab->sgotplt->output_offset | |
6882 | + got_offset); | |
6883 | rela.r_info = ELF32_R_INFO (htab->hplt->indx, | |
6884 | R_PPC_ADDR32); | |
6885 | rela.r_addend = ent->plt.offset + 16; | |
6886 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6887 | } | |
6888 | ||
6889 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
6890 | In particular, the offset for the relocation is not the | |
6891 | address of the PLT entry for this function, as specified | |
6892 | by the ABI. Instead, the offset is set to the address of | |
6893 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
6894 | rela.r_offset = (htab->sgotplt->output_section->vma | |
6895 | + htab->sgotplt->output_offset | |
6896 | + got_offset); | |
6897 | ||
a6aa5195 AM |
6898 | } |
6899 | else | |
6900 | { | |
9d8504b1 PB |
6901 | rela.r_offset = (htab->plt->output_section->vma |
6902 | + htab->plt->output_offset | |
6903 | + ent->plt.offset); | |
6904 | if (htab->old_plt) | |
6905 | { | |
6906 | /* We don't need to fill in the .plt. The ppc dynamic | |
6907 | linker will fill it in. */ | |
6908 | } | |
6909 | else | |
6910 | { | |
6911 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
6912 | + htab->glink->output_section->vma | |
6913 | + htab->glink->output_offset); | |
6914 | bfd_put_32 (output_bfd, val, | |
6915 | htab->plt->contents + ent->plt.offset); | |
6916 | } | |
a6aa5195 | 6917 | } |
e1a9cb8e | 6918 | |
a6aa5195 | 6919 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 AM |
6920 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); |
6921 | rela.r_addend = 0; | |
e1a9cb8e | 6922 | |
a6aa5195 AM |
6923 | loc = (htab->relplt->contents |
6924 | + reloc_index * sizeof (Elf32_External_Rela)); | |
6925 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
e1a9cb8e | 6926 | |
a6aa5195 AM |
6927 | if (!h->def_regular) |
6928 | { | |
6929 | /* Mark the symbol as undefined, rather than as defined in | |
6930 | the .plt section. Leave the value alone. */ | |
6931 | sym->st_shndx = SHN_UNDEF; | |
6932 | /* If the symbol is weak, we do need to clear the value. | |
6933 | Otherwise, the PLT entry would provide a definition for | |
6934 | the symbol even if the symbol wasn't defined anywhere, | |
6935 | and so the symbol would never be NULL. */ | |
6936 | if (!h->ref_regular_nonweak) | |
6937 | sym->st_value = 0; | |
6938 | } | |
6939 | doneone = TRUE; | |
6940 | } | |
e1a9cb8e | 6941 | |
a6aa5195 AM |
6942 | if (!htab->old_plt) |
6943 | { | |
6944 | bfd_vma plt; | |
6945 | unsigned char *p; | |
e1a9cb8e | 6946 | |
a6aa5195 AM |
6947 | plt = (ent->plt.offset |
6948 | + htab->plt->output_section->vma | |
6949 | + htab->plt->output_offset); | |
6950 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; | |
e1a9cb8e | 6951 | |
a6aa5195 AM |
6952 | if (info->shared || info->pie) |
6953 | { | |
6954 | bfd_vma got = 0; | |
6955 | ||
6956 | if (ent->addend >= 32768) | |
6957 | got = (ent->addend | |
6958 | + ent->sec->output_section->vma | |
6959 | + ent->sec->output_offset); | |
6960 | else if (htab->elf.hgot != NULL) | |
6961 | got = (htab->elf.hgot->root.u.def.value | |
6962 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
6963 | + htab->elf.hgot->root.u.def.section->output_offset); | |
6964 | ||
6965 | plt -= got; | |
6966 | ||
6967 | if (plt + 0x8000 < 0x10000) | |
6968 | { | |
6969 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
6970 | p += 4; | |
6971 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6972 | p += 4; | |
6973 | bfd_put_32 (output_bfd, BCTR, p); | |
6974 | p += 4; | |
6975 | bfd_put_32 (output_bfd, NOP, p); | |
6976 | p += 4; | |
6977 | } | |
6978 | else | |
6979 | { | |
6980 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
6981 | p += 4; | |
6982 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
6983 | p += 4; | |
6984 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6985 | p += 4; | |
6986 | bfd_put_32 (output_bfd, BCTR, p); | |
6987 | p += 4; | |
6988 | } | |
6989 | } | |
6990 | else | |
6991 | { | |
6992 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
6993 | p += 4; | |
6994 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
6995 | p += 4; | |
6996 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6997 | p += 4; | |
6998 | bfd_put_32 (output_bfd, BCTR, p); | |
6999 | p += 4; | |
28e99bb6 AM |
7000 | |
7001 | /* We only need one non-PIC glink stub. */ | |
7002 | break; | |
a6aa5195 AM |
7003 | } |
7004 | } | |
7005 | else | |
7006 | break; | |
7007 | } | |
e1a9cb8e | 7008 | |
25dbc73a AM |
7009 | if (h->needs_copy) |
7010 | { | |
7011 | asection *s; | |
7012 | Elf_Internal_Rela rela; | |
7013 | bfd_byte *loc; | |
e1a9cb8e | 7014 | |
25dbc73a | 7015 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 7016 | |
25dbc73a AM |
7017 | #ifdef DEBUG |
7018 | fprintf (stderr, ", copy"); | |
7019 | #endif | |
e1a9cb8e | 7020 | |
25dbc73a | 7021 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 7022 | |
4dc4a9a5 | 7023 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
7024 | s = htab->relsbss; |
7025 | else | |
7026 | s = htab->relbss; | |
7027 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 7028 | |
25dbc73a AM |
7029 | rela.r_offset = (h->root.u.def.value |
7030 | + h->root.u.def.section->output_section->vma | |
7031 | + h->root.u.def.section->output_offset); | |
7032 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
7033 | rela.r_addend = 0; | |
7034 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
7035 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7036 | } | |
e1a9cb8e | 7037 | |
25dbc73a AM |
7038 | #ifdef DEBUG |
7039 | fprintf (stderr, "\n"); | |
7040 | #endif | |
e1a9cb8e | 7041 | |
25dbc73a | 7042 | /* Mark some specially defined symbols as absolute. */ |
9d8504b1 PB |
7043 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
7044 | || (!htab->is_vxworks | |
7045 | && (h == htab->elf.hgot | |
7046 | || strcmp (h->root.root.string, | |
7047 | "_PROCEDURE_LINKAGE_TABLE_") == 0))) | |
25dbc73a | 7048 | sym->st_shndx = SHN_ABS; |
e1a9cb8e | 7049 | |
25dbc73a AM |
7050 | return TRUE; |
7051 | } | |
7052 | \f | |
7053 | static enum elf_reloc_type_class | |
7054 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
e1a9cb8e | 7055 | { |
25dbc73a AM |
7056 | switch (ELF32_R_TYPE (rela->r_info)) |
7057 | { | |
7058 | case R_PPC_RELATIVE: | |
7059 | return reloc_class_relative; | |
7060 | case R_PPC_REL24: | |
7061 | case R_PPC_ADDR24: | |
7062 | case R_PPC_JMP_SLOT: | |
7063 | return reloc_class_plt; | |
7064 | case R_PPC_COPY: | |
7065 | return reloc_class_copy; | |
7066 | default: | |
7067 | return reloc_class_normal; | |
7068 | } | |
e1a9cb8e | 7069 | } |
25dbc73a AM |
7070 | \f |
7071 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 7072 | |
25dbc73a AM |
7073 | static bfd_boolean |
7074 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
7075 | struct bfd_link_info *info) | |
e1a9cb8e | 7076 | { |
25dbc73a | 7077 | asection *sdyn; |
9d8504b1 | 7078 | asection *splt; |
25dbc73a | 7079 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 7080 | bfd_vma got; |
9d8504b1 | 7081 | bfd * dynobj; |
e1a9cb8e | 7082 | |
25dbc73a AM |
7083 | #ifdef DEBUG |
7084 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
7085 | #endif | |
6b0817e5 | 7086 | |
25dbc73a | 7087 | htab = ppc_elf_hash_table (info); |
9d8504b1 PB |
7088 | dynobj = elf_hash_table (info)->dynobj; |
7089 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
7090 | if (htab->is_vxworks) | |
7091 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
7092 | else | |
7093 | splt = NULL; | |
e1a9cb8e | 7094 | |
1fe44d79 AM |
7095 | got = 0; |
7096 | if (htab->elf.hgot != NULL) | |
7097 | got = (htab->elf.hgot->root.u.def.value | |
7098 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
7099 | + htab->elf.hgot->root.u.def.section->output_offset); | |
7100 | ||
25dbc73a | 7101 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 7102 | { |
25dbc73a | 7103 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 7104 | |
25dbc73a | 7105 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 7106 | |
25dbc73a AM |
7107 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
7108 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
7109 | for (; dyncon < dynconend; dyncon++) | |
7110 | { | |
7111 | Elf_Internal_Dyn dyn; | |
7112 | asection *s; | |
e1a9cb8e | 7113 | |
9d8504b1 | 7114 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 7115 | |
25dbc73a AM |
7116 | switch (dyn.d_tag) |
7117 | { | |
7118 | case DT_PLTGOT: | |
9d8504b1 PB |
7119 | if (htab->is_vxworks) |
7120 | s = htab->sgotplt; | |
7121 | else | |
7122 | s = htab->plt; | |
25dbc73a AM |
7123 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
7124 | break; | |
86bbe32f | 7125 | |
25dbc73a AM |
7126 | case DT_PLTRELSZ: |
7127 | dyn.d_un.d_val = htab->relplt->size; | |
7128 | break; | |
e1a9cb8e | 7129 | |
25dbc73a AM |
7130 | case DT_JMPREL: |
7131 | s = htab->relplt; | |
7132 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
7133 | break; | |
2f89ff8d | 7134 | |
1fe44d79 AM |
7135 | case DT_PPC_GOT: |
7136 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
7137 | break; |
7138 | ||
9d8504b1 PB |
7139 | case DT_RELASZ: |
7140 | if (htab->is_vxworks) | |
7141 | { | |
7142 | if (htab->relplt) | |
7143 | dyn.d_un.d_ptr -= htab->relplt->size; | |
7144 | break; | |
7145 | } | |
7146 | continue; | |
7147 | ||
25dbc73a AM |
7148 | default: |
7149 | continue; | |
7150 | } | |
4c45e5c9 | 7151 | |
25dbc73a AM |
7152 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7153 | } | |
7154 | } | |
4c45e5c9 | 7155 | |
25dbc73a AM |
7156 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
7157 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
3b36f7e6 | 7158 | if (htab->got != NULL) |
25dbc73a | 7159 | { |
3b36f7e6 AM |
7160 | unsigned char *p = htab->got->contents; |
7161 | bfd_vma val; | |
2f89ff8d | 7162 | |
636ce3f5 | 7163 | p += htab->elf.hgot->root.u.def.value; |
9d8504b1 | 7164 | if (htab->old_plt && !htab->is_vxworks) |
d7128ce4 | 7165 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4); |
3b36f7e6 AM |
7166 | |
7167 | val = 0; | |
7168 | if (sdyn != NULL) | |
7169 | val = sdyn->output_section->vma + sdyn->output_offset; | |
7170 | bfd_put_32 (output_bfd, val, p); | |
25dbc73a AM |
7171 | |
7172 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
7173 | } | |
7174 | ||
9d8504b1 PB |
7175 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
7176 | if (splt && splt->size > 0) | |
7177 | { | |
7178 | /* Use the right PLT. */ | |
7179 | static const bfd_vma *plt_entry = NULL; | |
7180 | plt_entry = info->shared ? | |
7181 | ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry; | |
7182 | ||
7183 | if (!info->shared) | |
7184 | { | |
7185 | bfd_vma got_value = | |
636ce3f5 AM |
7186 | (htab->elf.hgot->root.u.def.section->output_section->vma |
7187 | + htab->elf.hgot->root.u.def.section->output_offset | |
7188 | + htab->elf.hgot->root.u.def.value); | |
9d8504b1 PB |
7189 | bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15); |
7190 | ||
7191 | bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff), | |
7192 | splt->contents + 0); | |
7193 | bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff), | |
7194 | splt->contents + 4); | |
7195 | } | |
7196 | else | |
7197 | { | |
7198 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
7199 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
7200 | } | |
7201 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
7202 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
7203 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
7204 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
7205 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
7206 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
7207 | ||
7208 | if (! info->shared) | |
7209 | { | |
7210 | Elf_Internal_Rela rela; | |
7211 | bfd_byte *loc; | |
7212 | ||
7213 | loc = htab->srelplt2->contents; | |
7214 | ||
7215 | /* Output the @ha relocation for the first instruction. */ | |
7216 | rela.r_offset = (htab->plt->output_section->vma | |
7217 | + htab->plt->output_offset | |
7218 | + 2); | |
636ce3f5 | 7219 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7220 | rela.r_addend = 0; |
7221 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7222 | loc += sizeof (Elf32_External_Rela); | |
7223 | ||
7224 | /* Output the @l relocation for the second instruction. */ | |
7225 | rela.r_offset = (htab->plt->output_section->vma | |
7226 | + htab->plt->output_offset | |
7227 | + 6); | |
636ce3f5 | 7228 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7229 | rela.r_addend = 0; |
7230 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7231 | loc += sizeof (Elf32_External_Rela); | |
7232 | ||
7233 | /* Fix up the remaining relocations. They may have the wrong | |
7234 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
7235 | in which symbols were output. */ | |
7236 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
7237 | { | |
7238 | Elf_Internal_Rela rel; | |
7239 | ||
7240 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7241 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7242 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7243 | loc += sizeof (Elf32_External_Rela); | |
7244 | ||
7245 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7246 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7247 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7248 | loc += sizeof (Elf32_External_Rela); | |
7249 | ||
7250 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7251 | rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_PPC_ADDR32); | |
7252 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
7253 | loc += sizeof (Elf32_External_Rela); | |
7254 | } | |
7255 | } | |
7256 | } | |
7257 | ||
d7128ce4 AM |
7258 | if (htab->glink != NULL && htab->glink->contents != NULL) |
7259 | { | |
7260 | unsigned char *p; | |
7261 | unsigned char *endp; | |
a6aa5195 | 7262 | bfd_vma res0; |
d7128ce4 | 7263 | unsigned int i; |
a6aa5195 AM |
7264 | |
7265 | /* | |
7266 | * PIC glink code is the following: | |
7267 | * | |
7268 | * # ith PLT code stub. | |
7269 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
7270 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
7271 | * mtctr 11 | |
7272 | * bctr | |
7273 | * | |
7274 | * # A table of branches, one for each plt entry. | |
7275 | * # The idea is that the plt call stub loads ctr (and r11) with these | |
7276 | * # addresses, so (r11 - res_0) gives the plt index * 4. | |
7277 | * res_0: b PLTresolve | |
7278 | * res_1: b PLTresolve | |
7279 | * . | |
7280 | * # Some number of entries towards the end can be nops | |
7281 | * res_n_m3: nop | |
7282 | * res_n_m2: nop | |
7283 | * res_n_m1: | |
7284 | * | |
7285 | * PLTresolve: | |
7286 | * addis 11,11,(1f-res_0)@ha | |
7287 | * mflr 0 | |
7288 | * bcl 20,31,1f | |
7289 | * 1: addi 11,11,(1b-res_0)@l | |
7290 | * mflr 12 | |
7291 | * mtlr 0 | |
7292 | * sub 11,11,12 # r11 = index * 4 | |
7293 | * addis 12,12,(got+4-1b)@ha | |
7294 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
7295 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
7296 | * mtctr 0 | |
7297 | * add 0,11,11 | |
7298 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
7299 | * bctr | |
7300 | */ | |
7301 | static const unsigned int pic_plt_resolve[] = | |
7302 | { | |
7303 | ADDIS_11_11, | |
7304 | MFLR_0, | |
7305 | BCL_20_31, | |
7306 | ADDI_11_11, | |
7307 | MFLR_12, | |
7308 | MTLR_0, | |
7309 | SUB_11_11_12, | |
7310 | ADDIS_12_12, | |
7311 | LWZ_0_12, | |
7312 | LWZ_12_12, | |
7313 | MTCTR_0, | |
7314 | ADD_0_11_11, | |
7315 | ADD_11_0_11, | |
7316 | BCTR, | |
7317 | NOP, | |
7318 | NOP | |
7319 | }; | |
7320 | ||
d7128ce4 AM |
7321 | static const unsigned int plt_resolve[] = |
7322 | { | |
a6aa5195 AM |
7323 | LIS_12, |
7324 | ADDIS_11_11, | |
7325 | LWZ_0_12, | |
7326 | ADDI_11_11, | |
d7128ce4 | 7327 | MTCTR_0, |
7e8aeb9a | 7328 | ADD_0_11_11, |
a6aa5195 | 7329 | LWZ_12_12, |
7e8aeb9a | 7330 | ADD_11_0_11, |
d7128ce4 AM |
7331 | BCTR, |
7332 | NOP, | |
7333 | NOP, | |
a6aa5195 AM |
7334 | NOP, |
7335 | NOP, | |
7336 | NOP, | |
7337 | NOP, | |
d7128ce4 AM |
7338 | NOP |
7339 | }; | |
7340 | ||
a6aa5195 AM |
7341 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
7342 | abort (); | |
7343 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
7344 | abort (); |
7345 | ||
a6aa5195 | 7346 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 7347 | and perhaps some padding. */ |
a6aa5195 AM |
7348 | p = htab->glink->contents; |
7349 | p += htab->glink_pltresolve; | |
86b9da88 AM |
7350 | endp = htab->glink->contents; |
7351 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
7352 | while (p < endp - 8 * 4) | |
7353 | { | |
7354 | bfd_put_32 (output_bfd, B + endp - p, p); | |
7355 | p += 4; | |
7356 | } | |
7357 | while (p < endp) | |
7358 | { | |
7359 | bfd_put_32 (output_bfd, NOP, p); | |
7360 | p += 4; | |
7361 | } | |
7362 | ||
7e8aeb9a | 7363 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
7364 | + htab->glink->output_section->vma |
7365 | + htab->glink->output_offset); | |
7366 | ||
7367 | /* Last comes the PLTresolve stub. */ | |
7e8aeb9a AM |
7368 | if (info->shared || info->pie) |
7369 | { | |
a6aa5195 | 7370 | bfd_vma bcl; |
d7128ce4 | 7371 | |
a6aa5195 | 7372 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 7373 | { |
a6aa5195 | 7374 | bfd_put_32 (output_bfd, pic_plt_resolve[i], p); |
7e8aeb9a AM |
7375 | p += 4; |
7376 | } | |
a6aa5195 AM |
7377 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
7378 | ||
7379 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
7380 | + htab->glink->output_section->vma | |
7381 | + htab->glink->output_offset); | |
7382 | ||
7383 | bfd_put_32 (output_bfd, | |
7384 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
7385 | bfd_put_32 (output_bfd, | |
7386 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
7387 | bfd_put_32 (output_bfd, | |
7388 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
7389 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
7390 | { | |
7391 | bfd_put_32 (output_bfd, | |
7392 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7393 | bfd_put_32 (output_bfd, | |
7394 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
7395 | } | |
7396 | else | |
7397 | { | |
7398 | bfd_put_32 (output_bfd, | |
7399 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7400 | bfd_put_32 (output_bfd, | |
7401 | LWZ_12_12 + 4, p + 9*4); | |
7402 | } | |
7e8aeb9a AM |
7403 | } |
7404 | else | |
d7128ce4 | 7405 | { |
a6aa5195 | 7406 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a AM |
7407 | { |
7408 | bfd_put_32 (output_bfd, plt_resolve[i], p); | |
7409 | p += 4; | |
7410 | } | |
a6aa5195 AM |
7411 | p -= 4 * ARRAY_SIZE (plt_resolve); |
7412 | ||
7413 | bfd_put_32 (output_bfd, | |
7414 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
7415 | bfd_put_32 (output_bfd, | |
7416 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
7417 | bfd_put_32 (output_bfd, | |
7418 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
7419 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
7420 | { | |
7421 | bfd_put_32 (output_bfd, | |
7422 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
7423 | bfd_put_32 (output_bfd, | |
7424 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
7425 | } | |
7426 | else | |
7427 | { | |
7428 | bfd_put_32 (output_bfd, | |
7429 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
7430 | bfd_put_32 (output_bfd, | |
7431 | LWZ_12_12 + 4, p + 6*4); | |
7432 | } | |
d7128ce4 | 7433 | } |
d7128ce4 AM |
7434 | } |
7435 | ||
25dbc73a AM |
7436 | return TRUE; |
7437 | } | |
e1a9cb8e | 7438 | \f |
252b5132 RH |
7439 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
7440 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
7441 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
7442 | #define TARGET_BIG_NAME "elf32-powerpc" | |
7443 | #define ELF_ARCH bfd_arch_powerpc | |
7444 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
7445 | #ifdef __QNXTARGET__ |
7446 | #define ELF_MAXPAGESIZE 0x1000 | |
7447 | #else | |
252b5132 | 7448 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 7449 | #endif |
b1342370 | 7450 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
7451 | #define elf_info_to_howto ppc_elf_info_to_howto |
7452 | ||
7453 | #ifdef EM_CYGNUS_POWERPC | |
7454 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
7455 | #endif | |
7456 | ||
7457 | #ifdef EM_PPC_OLD | |
7458 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
7459 | #endif | |
7460 | ||
7461 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 7462 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 7463 | #define elf_backend_can_refcount 1 |
b491616a | 7464 | #define elf_backend_rela_normal 1 |
252b5132 | 7465 | |
43c40ab2 | 7466 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 7467 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 7468 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 RH |
7469 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
7470 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
70bccea4 | 7471 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 7472 | |
feee612b | 7473 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
7474 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
7475 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
7476 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
7477 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
7478 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
7479 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 7480 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
7481 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
7482 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
7483 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
7484 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
7485 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
7486 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
7487 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
7488 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
7489 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
29c2fb7c | 7490 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
7491 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
7492 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
7493 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 7494 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 7495 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 7496 | #define elf_backend_action_discarded ppc_elf_action_discarded |
252b5132 RH |
7497 | |
7498 | #include "elf32-target.h" | |
9d8504b1 PB |
7499 | |
7500 | /* VxWorks Target */ | |
7501 | ||
7502 | #undef TARGET_LITTLE_SYM | |
7503 | #undef TARGET_LITTLE_NAME | |
7504 | ||
7505 | #undef TARGET_BIG_SYM | |
7506 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec | |
7507 | #undef TARGET_BIG_NAME | |
7508 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
7509 | ||
d5e3d971 PB |
7510 | /* VxWorks uses the elf default section flags for .plt. */ |
7511 | static const struct bfd_elf_special_section * | |
7512 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 7513 | { |
d5e3d971 PB |
7514 | if (sec->name == NULL) |
7515 | return NULL; | |
7516 | ||
7517 | if (strcmp (sec->name, ".plt") == 0) | |
7518 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
7519 | ||
7520 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
7521 | } | |
9d8504b1 PB |
7522 | |
7523 | /* Like ppc_elf_link_hash_table_create, but overrides | |
7524 | appropriately for VxWorks. */ | |
7525 | static struct bfd_link_hash_table * | |
7526 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
7527 | { | |
7528 | struct bfd_link_hash_table *ret; | |
7529 | ||
7530 | ret = ppc_elf_link_hash_table_create (abfd); | |
7531 | if (ret) | |
7532 | { | |
7533 | struct ppc_elf_link_hash_table *htab | |
7534 | = (struct ppc_elf_link_hash_table *)ret; | |
7535 | htab->is_vxworks = 1; | |
7536 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; | |
7537 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
7538 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
7539 | } | |
7540 | return ret; | |
7541 | } | |
7542 | ||
7543 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
7544 | static bfd_boolean | |
7545 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
7546 | struct bfd_link_info *info, | |
7547 | Elf_Internal_Sym *sym, | |
7548 | const char **namep ATTRIBUTE_UNUSED, | |
7549 | flagword *flagsp ATTRIBUTE_UNUSED, | |
7550 | asection **secp, | |
7551 | bfd_vma *valp) | |
7552 | { | |
7553 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
7554 | valp)) | |
7555 | return FALSE; | |
7556 | ||
7557 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
7558 | } | |
7559 | ||
7560 | /* Tweak magic VxWorks symbols as they are written to the output file. */ | |
7561 | static bfd_boolean | |
7562 | elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info | |
7563 | ATTRIBUTE_UNUSED, | |
7564 | const char *name, | |
7565 | Elf_Internal_Sym *sym, | |
7566 | asection *input_sec ATTRIBUTE_UNUSED, | |
7567 | struct elf_link_hash_entry *h | |
7568 | ATTRIBUTE_UNUSED) | |
7569 | { | |
7570 | /* Ignore the first dummy symbol. */ | |
7571 | if (!name) | |
7572 | return TRUE; | |
7573 | ||
7574 | return elf_vxworks_link_output_symbol_hook (name, sym); | |
7575 | } | |
7576 | ||
7577 | static void | |
7578 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
7579 | { | |
7580 | ppc_elf_final_write_processing(abfd, linker); | |
7581 | elf_vxworks_final_write_processing(abfd, linker); | |
7582 | } | |
7583 | ||
7584 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
7585 | define it. */ | |
7586 | #undef elf_backend_want_plt_sym | |
7587 | #define elf_backend_want_plt_sym 1 | |
7588 | #undef elf_backend_want_got_plt | |
7589 | #define elf_backend_want_got_plt 1 | |
7590 | #undef elf_backend_got_symbol_offset | |
7591 | #define elf_backend_got_symbol_offset 0 | |
7592 | #undef elf_backend_plt_not_loaded | |
7593 | #define elf_backend_plt_not_loaded 0 | |
7594 | #undef elf_backend_plt_readonly | |
7595 | #define elf_backend_plt_readonly 1 | |
7596 | #undef elf_backend_got_header_size | |
7597 | #define elf_backend_got_header_size 12 | |
7598 | ||
7599 | #undef bfd_elf32_bfd_link_hash_table_create | |
7600 | #define bfd_elf32_bfd_link_hash_table_create \ | |
7601 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
7602 | #undef elf_backend_add_symbol_hook |
7603 | #define elf_backend_add_symbol_hook \ | |
7604 | ppc_elf_vxworks_add_symbol_hook | |
7605 | #undef elf_backend_link_output_symbol_hook | |
7606 | #define elf_backend_link_output_symbol_hook \ | |
7607 | elf_i386_vxworks_link_output_symbol_hook | |
7608 | #undef elf_backend_final_write_processing | |
7609 | #define elf_backend_final_write_processing \ | |
7610 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
7611 | #undef elf_backend_get_sec_type_attr |
7612 | #define elf_backend_get_sec_type_attr \ | |
7613 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
7614 | #undef elf_backend_emit_relocs |
7615 | #define elf_backend_emit_relocs \ | |
7616 | elf_vxworks_emit_relocs | |
7617 | ||
7618 | #undef elf32_bed | |
7619 | #define elf32_bed ppc_elf_vxworks_bed | |
7620 | ||
7621 | #include "elf32-target.h" |