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, |
ab96bf03 | 3 | 2004, 2005, 2006, 2007 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 | ||
183e98be | 28 | #include <stdarg.h> |
252b5132 RH |
29 | #include "bfd.h" |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
34 | #include "elf/ppc.h" | |
7619e7c7 | 35 | #include "elf32-ppc.h" |
9d8504b1 | 36 | #include "elf-vxworks.h" |
252b5132 | 37 | |
f0fe0e16 | 38 | /* RELA relocations are used here. */ |
252b5132 | 39 | |
252b5132 | 40 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 42 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 44 | |
70bccea4 AM |
45 | /* Branch prediction bit for branch taken relocs. */ |
46 | #define BRANCH_PREDICT_BIT 0x200000 | |
47 | /* Mask to set RA in memory instructions. */ | |
48 | #define RA_REGISTER_MASK 0x001f0000 | |
49 | /* Value to shift register by to insert RA. */ | |
50 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
51 | |
52 | /* The name of the dynamic interpreter. This is put in the .interp | |
53 | section. */ | |
252b5132 RH |
54 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
55 | ||
d7128ce4 | 56 | /* For old-style PLT. */ |
252b5132 RH |
57 | /* The number of single-slot PLT entries (the rest use two slots). */ |
58 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
59 | ||
d7128ce4 | 60 | /* For new-style .glink and .plt. */ |
a6aa5195 | 61 | #define GLINK_PLTRESOLVE 16*4 |
d7128ce4 AM |
62 | #define GLINK_ENTRY_SIZE 4*4 |
63 | ||
9d8504b1 PB |
64 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
65 | ||
66 | /* The standard VxWorks PLT entry. */ | |
67 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
68 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
69 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
70 | { | |
71 | 0x3d800000, /* lis r12,0 */ | |
72 | 0x818c0000, /* lwz r12,0(r12) */ | |
73 | 0x7d8903a6, /* mtctr r12 */ | |
74 | 0x4e800420, /* bctr */ | |
75 | 0x39600000, /* li r11,0 */ | |
76 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
77 | 0x60000000, /* nop */ | |
78 | 0x60000000, /* nop */ | |
79 | }; | |
80 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
81 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
82 | { | |
83 | 0x3d9e0000, /* addis r12,r30,0 */ | |
84 | 0x818c0000, /* lwz r12,0(r12) */ | |
85 | 0x7d8903a6, /* mtctr r12 */ | |
86 | 0x4e800420, /* bctr */ | |
87 | 0x39600000, /* li r11,0 */ | |
88 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
89 | 0x60000000, /* nop */ | |
90 | 0x60000000, /* nop */ | |
91 | }; | |
92 | ||
93 | /* The initial VxWorks PLT entry. */ | |
94 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
95 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
96 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
97 | { | |
98 | 0x3d800000, /* lis r12,0 */ | |
99 | 0x398c0000, /* addi r12,r12,0 */ | |
100 | 0x800c0008, /* lwz r0,8(r12) */ | |
101 | 0x7c0903a6, /* mtctr r0 */ | |
102 | 0x818c0004, /* lwz r12,4(r12) */ | |
103 | 0x4e800420, /* bctr */ | |
104 | 0x60000000, /* nop */ | |
105 | 0x60000000, /* nop */ | |
106 | }; | |
107 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
108 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
109 | { | |
110 | 0x819e0008, /* lwz r12,8(r30) */ | |
111 | 0x7d8903a6, /* mtctr r12 */ | |
112 | 0x819e0004, /* lwz r12,4(r30) */ | |
113 | 0x4e800420, /* bctr */ | |
114 | 0x60000000, /* nop */ | |
115 | 0x60000000, /* nop */ | |
116 | 0x60000000, /* nop */ | |
117 | 0x60000000, /* nop */ | |
118 | }; | |
119 | ||
120 | /* For executables, we have some additional relocations in | |
121 | .rela.plt.unloaded, for the kernel loader. */ | |
122 | ||
123 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
124 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
125 | /* The number of relocations in the PLTResolve slot. */ | |
126 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
127 | /* The number of relocations in the PLTResolve slot when when creating | |
128 | a shared library. */ | |
129 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
130 | ||
d7128ce4 | 131 | /* Some instructions. */ |
d7128ce4 | 132 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
133 | #define ADDIS_11_30 0x3d7e0000 |
134 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 135 | #define ADDI_11_11 0x396b0000 |
d7128ce4 AM |
136 | #define ADD_0_11_11 0x7c0b5a14 |
137 | #define ADD_11_0_11 0x7d605a14 | |
a6aa5195 AM |
138 | #define B 0x48000000 |
139 | #define BCL_20_31 0x429f0005 | |
d7128ce4 | 140 | #define BCTR 0x4e800420 |
7e8aeb9a AM |
141 | #define LIS_11 0x3d600000 |
142 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
143 | #define LWZU_0_12 0x840c0000 |
144 | #define LWZ_0_12 0x800c0000 | |
145 | #define LWZ_11_11 0x816b0000 | |
146 | #define LWZ_11_30 0x817e0000 | |
147 | #define LWZ_12_12 0x818c0000 | |
148 | #define MFLR_0 0x7c0802a6 | |
149 | #define MFLR_12 0x7d8802a6 | |
150 | #define MTCTR_0 0x7c0903a6 | |
151 | #define MTCTR_11 0x7d6903a6 | |
152 | #define MTLR_0 0x7c0803a6 | |
153 | #define NOP 0x60000000 | |
154 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
155 | |
156 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
157 | #define TP_OFFSET 0x7000 | |
158 | #define DTP_OFFSET 0x8000 | |
7fce784e | 159 | \f |
e47cd125 | 160 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 161 | |
8da6118f | 162 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
163 | /* This reloc does nothing. */ |
164 | HOWTO (R_PPC_NONE, /* type */ | |
165 | 0, /* rightshift */ | |
166 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
167 | 32, /* bitsize */ | |
b34976b6 | 168 | FALSE, /* pc_relative */ |
252b5132 RH |
169 | 0, /* bitpos */ |
170 | complain_overflow_bitfield, /* complain_on_overflow */ | |
171 | bfd_elf_generic_reloc, /* special_function */ | |
172 | "R_PPC_NONE", /* name */ | |
b34976b6 | 173 | FALSE, /* partial_inplace */ |
252b5132 RH |
174 | 0, /* src_mask */ |
175 | 0, /* dst_mask */ | |
b34976b6 | 176 | FALSE), /* pcrel_offset */ |
252b5132 RH |
177 | |
178 | /* A standard 32 bit relocation. */ | |
179 | HOWTO (R_PPC_ADDR32, /* type */ | |
180 | 0, /* rightshift */ | |
181 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
182 | 32, /* bitsize */ | |
b34976b6 | 183 | FALSE, /* pc_relative */ |
252b5132 RH |
184 | 0, /* bitpos */ |
185 | complain_overflow_bitfield, /* complain_on_overflow */ | |
186 | bfd_elf_generic_reloc, /* special_function */ | |
187 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 188 | FALSE, /* partial_inplace */ |
252b5132 RH |
189 | 0, /* src_mask */ |
190 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 191 | FALSE), /* pcrel_offset */ |
252b5132 RH |
192 | |
193 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
194 | FIXME: we don't check that, we just clear them. */ | |
195 | HOWTO (R_PPC_ADDR24, /* type */ | |
196 | 0, /* rightshift */ | |
197 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 26, /* bitsize */ | |
b34976b6 | 199 | FALSE, /* pc_relative */ |
252b5132 RH |
200 | 0, /* bitpos */ |
201 | complain_overflow_bitfield, /* complain_on_overflow */ | |
202 | bfd_elf_generic_reloc, /* special_function */ | |
203 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 204 | FALSE, /* partial_inplace */ |
252b5132 RH |
205 | 0, /* src_mask */ |
206 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 207 | FALSE), /* pcrel_offset */ |
252b5132 RH |
208 | |
209 | /* A standard 16 bit relocation. */ | |
210 | HOWTO (R_PPC_ADDR16, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 16, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
252b5132 RH |
215 | 0, /* bitpos */ |
216 | complain_overflow_bitfield, /* complain_on_overflow */ | |
217 | bfd_elf_generic_reloc, /* special_function */ | |
218 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
252b5132 RH |
220 | 0, /* src_mask */ |
221 | 0xffff, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
252b5132 RH |
223 | |
224 | /* A 16 bit relocation without overflow. */ | |
225 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 16, /* bitsize */ | |
b34976b6 | 229 | FALSE, /* pc_relative */ |
252b5132 RH |
230 | 0, /* bitpos */ |
231 | complain_overflow_dont,/* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 234 | FALSE, /* partial_inplace */ |
252b5132 RH |
235 | 0, /* src_mask */ |
236 | 0xffff, /* dst_mask */ | |
b34976b6 | 237 | FALSE), /* pcrel_offset */ |
252b5132 RH |
238 | |
239 | /* The high order 16 bits of an address. */ | |
240 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
241 | 16, /* rightshift */ | |
242 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 16, /* bitsize */ | |
b34976b6 | 244 | FALSE, /* pc_relative */ |
252b5132 RH |
245 | 0, /* bitpos */ |
246 | complain_overflow_dont, /* complain_on_overflow */ | |
247 | bfd_elf_generic_reloc, /* special_function */ | |
248 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 249 | FALSE, /* partial_inplace */ |
252b5132 RH |
250 | 0, /* src_mask */ |
251 | 0xffff, /* dst_mask */ | |
b34976b6 | 252 | FALSE), /* pcrel_offset */ |
252b5132 RH |
253 | |
254 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 255 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
256 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
257 | 16, /* rightshift */ | |
258 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
259 | 16, /* bitsize */ | |
b34976b6 | 260 | FALSE, /* pc_relative */ |
252b5132 RH |
261 | 0, /* bitpos */ |
262 | complain_overflow_dont, /* complain_on_overflow */ | |
263 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
264 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 265 | FALSE, /* partial_inplace */ |
252b5132 RH |
266 | 0, /* src_mask */ |
267 | 0xffff, /* dst_mask */ | |
b34976b6 | 268 | FALSE), /* pcrel_offset */ |
252b5132 RH |
269 | |
270 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
271 | FIXME: we don't check that, we just clear them. */ | |
272 | HOWTO (R_PPC_ADDR14, /* type */ | |
273 | 0, /* rightshift */ | |
274 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 16, /* bitsize */ | |
b34976b6 | 276 | FALSE, /* pc_relative */ |
252b5132 RH |
277 | 0, /* bitpos */ |
278 | complain_overflow_bitfield, /* complain_on_overflow */ | |
279 | bfd_elf_generic_reloc, /* special_function */ | |
280 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 281 | FALSE, /* partial_inplace */ |
252b5132 RH |
282 | 0, /* src_mask */ |
283 | 0xfffc, /* dst_mask */ | |
b34976b6 | 284 | FALSE), /* pcrel_offset */ |
252b5132 RH |
285 | |
286 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
287 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 288 | bits must be zero. */ |
252b5132 RH |
289 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
290 | 0, /* rightshift */ | |
291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
292 | 16, /* bitsize */ | |
b34976b6 | 293 | FALSE, /* pc_relative */ |
252b5132 RH |
294 | 0, /* bitpos */ |
295 | complain_overflow_bitfield, /* complain_on_overflow */ | |
296 | bfd_elf_generic_reloc, /* special_function */ | |
297 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 298 | FALSE, /* partial_inplace */ |
252b5132 RH |
299 | 0, /* src_mask */ |
300 | 0xfffc, /* dst_mask */ | |
b34976b6 | 301 | FALSE), /* pcrel_offset */ |
252b5132 RH |
302 | |
303 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
304 | indicate that the branch is not expected to be taken. The lower | |
305 | two bits must be zero. */ | |
306 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
307 | 0, /* rightshift */ | |
308 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
309 | 16, /* bitsize */ | |
b34976b6 | 310 | FALSE, /* pc_relative */ |
252b5132 RH |
311 | 0, /* bitpos */ |
312 | complain_overflow_bitfield, /* complain_on_overflow */ | |
313 | bfd_elf_generic_reloc, /* special_function */ | |
314 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 315 | FALSE, /* partial_inplace */ |
252b5132 RH |
316 | 0, /* src_mask */ |
317 | 0xfffc, /* dst_mask */ | |
b34976b6 | 318 | FALSE), /* pcrel_offset */ |
252b5132 | 319 | |
8da6118f | 320 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
321 | HOWTO (R_PPC_REL24, /* type */ |
322 | 0, /* rightshift */ | |
323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
324 | 26, /* bitsize */ | |
b34976b6 | 325 | TRUE, /* pc_relative */ |
252b5132 RH |
326 | 0, /* bitpos */ |
327 | complain_overflow_signed, /* complain_on_overflow */ | |
328 | bfd_elf_generic_reloc, /* special_function */ | |
329 | "R_PPC_REL24", /* name */ | |
b34976b6 | 330 | FALSE, /* partial_inplace */ |
252b5132 RH |
331 | 0, /* src_mask */ |
332 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 333 | TRUE), /* pcrel_offset */ |
252b5132 | 334 | |
8da6118f | 335 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
336 | HOWTO (R_PPC_REL14, /* type */ |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 16, /* bitsize */ | |
b34976b6 | 340 | TRUE, /* pc_relative */ |
252b5132 RH |
341 | 0, /* bitpos */ |
342 | complain_overflow_signed, /* complain_on_overflow */ | |
343 | bfd_elf_generic_reloc, /* special_function */ | |
344 | "R_PPC_REL14", /* name */ | |
b34976b6 | 345 | FALSE, /* partial_inplace */ |
252b5132 RH |
346 | 0, /* src_mask */ |
347 | 0xfffc, /* dst_mask */ | |
b34976b6 | 348 | TRUE), /* pcrel_offset */ |
252b5132 | 349 | |
8da6118f | 350 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
351 | the branch is expected to be taken. The lower two bits must be |
352 | zero. */ | |
353 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 16, /* bitsize */ | |
b34976b6 | 357 | TRUE, /* pc_relative */ |
252b5132 RH |
358 | 0, /* bitpos */ |
359 | complain_overflow_signed, /* complain_on_overflow */ | |
360 | bfd_elf_generic_reloc, /* special_function */ | |
361 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 362 | FALSE, /* partial_inplace */ |
252b5132 RH |
363 | 0, /* src_mask */ |
364 | 0xfffc, /* dst_mask */ | |
b34976b6 | 365 | TRUE), /* pcrel_offset */ |
252b5132 | 366 | |
8da6118f | 367 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
368 | the branch is not expected to be taken. The lower two bits must |
369 | be zero. */ | |
370 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
371 | 0, /* rightshift */ | |
372 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 16, /* bitsize */ | |
b34976b6 | 374 | TRUE, /* pc_relative */ |
252b5132 RH |
375 | 0, /* bitpos */ |
376 | complain_overflow_signed, /* complain_on_overflow */ | |
377 | bfd_elf_generic_reloc, /* special_function */ | |
378 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 379 | FALSE, /* partial_inplace */ |
252b5132 RH |
380 | 0, /* src_mask */ |
381 | 0xfffc, /* dst_mask */ | |
b34976b6 | 382 | TRUE), /* pcrel_offset */ |
252b5132 RH |
383 | |
384 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
385 | symbol. */ | |
386 | HOWTO (R_PPC_GOT16, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 16, /* bitsize */ | |
b34976b6 | 390 | FALSE, /* pc_relative */ |
252b5132 RH |
391 | 0, /* bitpos */ |
392 | complain_overflow_signed, /* complain_on_overflow */ | |
393 | bfd_elf_generic_reloc, /* special_function */ | |
394 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
252b5132 RH |
396 | 0, /* src_mask */ |
397 | 0xffff, /* dst_mask */ | |
b34976b6 | 398 | FALSE), /* pcrel_offset */ |
252b5132 RH |
399 | |
400 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
401 | the symbol. */ | |
402 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
403 | 0, /* rightshift */ | |
404 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
405 | 16, /* bitsize */ | |
b34976b6 | 406 | FALSE, /* pc_relative */ |
252b5132 RH |
407 | 0, /* bitpos */ |
408 | complain_overflow_dont, /* complain_on_overflow */ | |
409 | bfd_elf_generic_reloc, /* special_function */ | |
410 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 411 | FALSE, /* partial_inplace */ |
252b5132 RH |
412 | 0, /* src_mask */ |
413 | 0xffff, /* dst_mask */ | |
b34976b6 | 414 | FALSE), /* pcrel_offset */ |
252b5132 RH |
415 | |
416 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
417 | the symbol. */ | |
418 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
419 | 16, /* rightshift */ | |
420 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 16, /* bitsize */ | |
b34976b6 | 422 | FALSE, /* pc_relative */ |
252b5132 RH |
423 | 0, /* bitpos */ |
424 | complain_overflow_bitfield, /* complain_on_overflow */ | |
425 | bfd_elf_generic_reloc, /* special_function */ | |
426 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
252b5132 RH |
428 | 0, /* src_mask */ |
429 | 0xffff, /* dst_mask */ | |
b34976b6 | 430 | FALSE), /* pcrel_offset */ |
252b5132 RH |
431 | |
432 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
433 | the symbol. */ | |
434 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
435 | 16, /* rightshift */ | |
436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
437 | 16, /* bitsize */ | |
b34976b6 | 438 | FALSE, /* pc_relative */ |
252b5132 RH |
439 | 0, /* bitpos */ |
440 | complain_overflow_bitfield, /* complain_on_overflow */ | |
441 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
442 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 443 | FALSE, /* partial_inplace */ |
252b5132 RH |
444 | 0, /* src_mask */ |
445 | 0xffff, /* dst_mask */ | |
b34976b6 | 446 | FALSE), /* pcrel_offset */ |
252b5132 RH |
447 | |
448 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
449 | entry for the symbol. */ | |
450 | HOWTO (R_PPC_PLTREL24, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 26, /* bitsize */ | |
b34976b6 | 454 | TRUE, /* pc_relative */ |
252b5132 RH |
455 | 0, /* bitpos */ |
456 | complain_overflow_signed, /* complain_on_overflow */ | |
457 | bfd_elf_generic_reloc, /* special_function */ | |
458 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
252b5132 RH |
460 | 0, /* src_mask */ |
461 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 462 | TRUE), /* pcrel_offset */ |
252b5132 RH |
463 | |
464 | /* This is used only by the dynamic linker. The symbol should exist | |
465 | both in the object being run and in some shared library. The | |
466 | dynamic linker copies the data addressed by the symbol from the | |
467 | shared library into the object, because the object being | |
468 | run has to have the data at some particular address. */ | |
469 | HOWTO (R_PPC_COPY, /* type */ | |
470 | 0, /* rightshift */ | |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 32, /* bitsize */ | |
b34976b6 | 473 | FALSE, /* pc_relative */ |
252b5132 RH |
474 | 0, /* bitpos */ |
475 | complain_overflow_bitfield, /* complain_on_overflow */ | |
476 | bfd_elf_generic_reloc, /* special_function */ | |
477 | "R_PPC_COPY", /* name */ | |
b34976b6 | 478 | FALSE, /* partial_inplace */ |
252b5132 RH |
479 | 0, /* src_mask */ |
480 | 0, /* dst_mask */ | |
b34976b6 | 481 | FALSE), /* pcrel_offset */ |
252b5132 RH |
482 | |
483 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
484 | entries. */ | |
485 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
486 | 0, /* rightshift */ | |
487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
488 | 32, /* bitsize */ | |
b34976b6 | 489 | FALSE, /* pc_relative */ |
252b5132 RH |
490 | 0, /* bitpos */ |
491 | complain_overflow_bitfield, /* complain_on_overflow */ | |
492 | bfd_elf_generic_reloc, /* special_function */ | |
493 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 494 | FALSE, /* partial_inplace */ |
252b5132 RH |
495 | 0, /* src_mask */ |
496 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 497 | FALSE), /* pcrel_offset */ |
252b5132 RH |
498 | |
499 | /* Marks a procedure linkage table entry for a symbol. */ | |
500 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
501 | 0, /* rightshift */ | |
502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 32, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
252b5132 RH |
505 | 0, /* bitpos */ |
506 | complain_overflow_bitfield, /* complain_on_overflow */ | |
507 | bfd_elf_generic_reloc, /* special_function */ | |
508 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
252b5132 RH |
510 | 0, /* src_mask */ |
511 | 0, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
252b5132 RH |
513 | |
514 | /* Used only by the dynamic linker. When the object is run, this | |
515 | longword is set to the load address of the object, plus the | |
516 | addend. */ | |
517 | HOWTO (R_PPC_RELATIVE, /* type */ | |
518 | 0, /* rightshift */ | |
519 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
520 | 32, /* bitsize */ | |
b34976b6 | 521 | FALSE, /* pc_relative */ |
252b5132 RH |
522 | 0, /* bitpos */ |
523 | complain_overflow_bitfield, /* complain_on_overflow */ | |
524 | bfd_elf_generic_reloc, /* special_function */ | |
525 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 526 | FALSE, /* partial_inplace */ |
252b5132 RH |
527 | 0, /* src_mask */ |
528 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 529 | FALSE), /* pcrel_offset */ |
252b5132 RH |
530 | |
531 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
532 | object rather than the final value. Normally used for | |
533 | _GLOBAL_OFFSET_TABLE_. */ | |
534 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
535 | 0, /* rightshift */ | |
536 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
537 | 26, /* bitsize */ | |
b34976b6 | 538 | TRUE, /* pc_relative */ |
252b5132 RH |
539 | 0, /* bitpos */ |
540 | complain_overflow_signed, /* complain_on_overflow */ | |
541 | bfd_elf_generic_reloc, /* special_function */ | |
542 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 543 | FALSE, /* partial_inplace */ |
252b5132 RH |
544 | 0, /* src_mask */ |
545 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 546 | TRUE), /* pcrel_offset */ |
252b5132 RH |
547 | |
548 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
549 | HOWTO (R_PPC_UADDR32, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 32, /* bitsize */ | |
b34976b6 | 553 | FALSE, /* pc_relative */ |
252b5132 RH |
554 | 0, /* bitpos */ |
555 | complain_overflow_bitfield, /* complain_on_overflow */ | |
556 | bfd_elf_generic_reloc, /* special_function */ | |
557 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 558 | FALSE, /* partial_inplace */ |
252b5132 RH |
559 | 0, /* src_mask */ |
560 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 561 | FALSE), /* pcrel_offset */ |
252b5132 RH |
562 | |
563 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
564 | HOWTO (R_PPC_UADDR16, /* type */ | |
565 | 0, /* rightshift */ | |
566 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 16, /* bitsize */ | |
b34976b6 | 568 | FALSE, /* pc_relative */ |
252b5132 RH |
569 | 0, /* bitpos */ |
570 | complain_overflow_bitfield, /* complain_on_overflow */ | |
571 | bfd_elf_generic_reloc, /* special_function */ | |
572 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 573 | FALSE, /* partial_inplace */ |
252b5132 RH |
574 | 0, /* src_mask */ |
575 | 0xffff, /* dst_mask */ | |
b34976b6 | 576 | FALSE), /* pcrel_offset */ |
252b5132 RH |
577 | |
578 | /* 32-bit PC relative */ | |
579 | HOWTO (R_PPC_REL32, /* type */ | |
580 | 0, /* rightshift */ | |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 32, /* bitsize */ | |
b34976b6 | 583 | TRUE, /* pc_relative */ |
252b5132 RH |
584 | 0, /* bitpos */ |
585 | complain_overflow_bitfield, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
587 | "R_PPC_REL32", /* name */ | |
b34976b6 | 588 | FALSE, /* partial_inplace */ |
252b5132 RH |
589 | 0, /* src_mask */ |
590 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 591 | TRUE), /* pcrel_offset */ |
252b5132 RH |
592 | |
593 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 594 | FIXME: not supported. */ |
252b5132 RH |
595 | HOWTO (R_PPC_PLT32, /* type */ |
596 | 0, /* rightshift */ | |
597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 32, /* bitsize */ | |
b34976b6 | 599 | FALSE, /* pc_relative */ |
252b5132 RH |
600 | 0, /* bitpos */ |
601 | complain_overflow_bitfield, /* complain_on_overflow */ | |
602 | bfd_elf_generic_reloc, /* special_function */ | |
603 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 604 | FALSE, /* partial_inplace */ |
252b5132 RH |
605 | 0, /* src_mask */ |
606 | 0, /* dst_mask */ | |
b34976b6 | 607 | FALSE), /* pcrel_offset */ |
252b5132 RH |
608 | |
609 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 610 | FIXME: not supported. */ |
252b5132 RH |
611 | HOWTO (R_PPC_PLTREL32, /* type */ |
612 | 0, /* rightshift */ | |
613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
614 | 32, /* bitsize */ | |
b34976b6 | 615 | TRUE, /* pc_relative */ |
252b5132 RH |
616 | 0, /* bitpos */ |
617 | complain_overflow_bitfield, /* complain_on_overflow */ | |
618 | bfd_elf_generic_reloc, /* special_function */ | |
619 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 620 | FALSE, /* partial_inplace */ |
252b5132 RH |
621 | 0, /* src_mask */ |
622 | 0, /* dst_mask */ | |
b34976b6 | 623 | TRUE), /* pcrel_offset */ |
252b5132 RH |
624 | |
625 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
626 | the symbol. */ | |
627 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
628 | 0, /* rightshift */ | |
629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 16, /* bitsize */ | |
b34976b6 | 631 | FALSE, /* pc_relative */ |
252b5132 RH |
632 | 0, /* bitpos */ |
633 | complain_overflow_dont, /* complain_on_overflow */ | |
634 | bfd_elf_generic_reloc, /* special_function */ | |
635 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 636 | FALSE, /* partial_inplace */ |
252b5132 RH |
637 | 0, /* src_mask */ |
638 | 0xffff, /* dst_mask */ | |
b34976b6 | 639 | FALSE), /* pcrel_offset */ |
252b5132 RH |
640 | |
641 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
642 | the symbol. */ | |
643 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
644 | 16, /* rightshift */ | |
645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
646 | 16, /* bitsize */ | |
b34976b6 | 647 | FALSE, /* pc_relative */ |
252b5132 RH |
648 | 0, /* bitpos */ |
649 | complain_overflow_bitfield, /* complain_on_overflow */ | |
650 | bfd_elf_generic_reloc, /* special_function */ | |
651 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 652 | FALSE, /* partial_inplace */ |
252b5132 RH |
653 | 0, /* src_mask */ |
654 | 0xffff, /* dst_mask */ | |
b34976b6 | 655 | FALSE), /* pcrel_offset */ |
252b5132 RH |
656 | |
657 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
658 | the symbol. */ | |
659 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
660 | 16, /* rightshift */ | |
661 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
662 | 16, /* bitsize */ | |
b34976b6 | 663 | FALSE, /* pc_relative */ |
252b5132 RH |
664 | 0, /* bitpos */ |
665 | complain_overflow_bitfield, /* complain_on_overflow */ | |
666 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
667 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 668 | FALSE, /* partial_inplace */ |
252b5132 RH |
669 | 0, /* src_mask */ |
670 | 0xffff, /* dst_mask */ | |
b34976b6 | 671 | FALSE), /* pcrel_offset */ |
252b5132 RH |
672 | |
673 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
674 | small data items. */ | |
675 | HOWTO (R_PPC_SDAREL16, /* type */ | |
676 | 0, /* rightshift */ | |
677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
678 | 16, /* bitsize */ | |
b34976b6 | 679 | FALSE, /* pc_relative */ |
252b5132 RH |
680 | 0, /* bitpos */ |
681 | complain_overflow_signed, /* complain_on_overflow */ | |
682 | bfd_elf_generic_reloc, /* special_function */ | |
683 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 684 | FALSE, /* partial_inplace */ |
252b5132 RH |
685 | 0, /* src_mask */ |
686 | 0xffff, /* dst_mask */ | |
b34976b6 | 687 | FALSE), /* pcrel_offset */ |
252b5132 | 688 | |
c061c2d8 | 689 | /* 16-bit section relative relocation. */ |
252b5132 RH |
690 | HOWTO (R_PPC_SECTOFF, /* type */ |
691 | 0, /* rightshift */ | |
c061c2d8 AM |
692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
693 | 16, /* bitsize */ | |
b34976b6 | 694 | FALSE, /* pc_relative */ |
252b5132 RH |
695 | 0, /* bitpos */ |
696 | complain_overflow_bitfield, /* complain_on_overflow */ | |
697 | bfd_elf_generic_reloc, /* special_function */ | |
698 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
252b5132 | 700 | 0, /* src_mask */ |
c061c2d8 | 701 | 0xffff, /* dst_mask */ |
b34976b6 | 702 | FALSE), /* pcrel_offset */ |
252b5132 | 703 | |
c3668558 | 704 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
705 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
706 | 0, /* rightshift */ | |
707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 16, /* bitsize */ | |
b34976b6 | 709 | FALSE, /* pc_relative */ |
252b5132 RH |
710 | 0, /* bitpos */ |
711 | complain_overflow_dont, /* complain_on_overflow */ | |
712 | bfd_elf_generic_reloc, /* special_function */ | |
713 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
252b5132 RH |
715 | 0, /* src_mask */ |
716 | 0xffff, /* dst_mask */ | |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
252b5132 | 718 | |
c3668558 | 719 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
720 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
721 | 16, /* rightshift */ | |
722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 16, /* bitsize */ | |
b34976b6 | 724 | FALSE, /* pc_relative */ |
252b5132 RH |
725 | 0, /* bitpos */ |
726 | complain_overflow_bitfield, /* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 729 | FALSE, /* partial_inplace */ |
252b5132 RH |
730 | 0, /* src_mask */ |
731 | 0xffff, /* dst_mask */ | |
b34976b6 | 732 | FALSE), /* pcrel_offset */ |
252b5132 | 733 | |
c3668558 | 734 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
735 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
736 | 16, /* rightshift */ | |
737 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 16, /* bitsize */ | |
b34976b6 | 739 | FALSE, /* pc_relative */ |
252b5132 RH |
740 | 0, /* bitpos */ |
741 | complain_overflow_bitfield, /* complain_on_overflow */ | |
742 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
743 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 744 | FALSE, /* partial_inplace */ |
252b5132 RH |
745 | 0, /* src_mask */ |
746 | 0xffff, /* dst_mask */ | |
b34976b6 | 747 | FALSE), /* pcrel_offset */ |
252b5132 | 748 | |
7619e7c7 AM |
749 | /* Marker reloc for TLS. */ |
750 | HOWTO (R_PPC_TLS, | |
252b5132 RH |
751 | 0, /* rightshift */ |
752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 32, /* bitsize */ | |
b34976b6 | 754 | FALSE, /* pc_relative */ |
252b5132 | 755 | 0, /* bitpos */ |
7619e7c7 | 756 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 757 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
758 | "R_PPC_TLS", /* name */ |
759 | FALSE, /* partial_inplace */ | |
760 | 0, /* src_mask */ | |
761 | 0, /* dst_mask */ | |
762 | FALSE), /* pcrel_offset */ | |
763 | ||
764 | /* Computes the load module index of the load module that contains the | |
765 | definition of its TLS sym. */ | |
766 | HOWTO (R_PPC_DTPMOD32, | |
767 | 0, /* rightshift */ | |
768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 32, /* bitsize */ | |
770 | FALSE, /* pc_relative */ | |
771 | 0, /* bitpos */ | |
772 | complain_overflow_dont, /* complain_on_overflow */ | |
773 | ppc_elf_unhandled_reloc, /* special_function */ | |
774 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 775 | FALSE, /* partial_inplace */ |
252b5132 RH |
776 | 0, /* src_mask */ |
777 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 778 | FALSE), /* pcrel_offset */ |
252b5132 | 779 | |
7619e7c7 AM |
780 | /* Computes a dtv-relative displacement, the difference between the value |
781 | of sym+add and the base address of the thread-local storage block that | |
782 | contains the definition of sym, minus 0x8000. */ | |
783 | HOWTO (R_PPC_DTPREL32, | |
784 | 0, /* rightshift */ | |
785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 32, /* bitsize */ | |
787 | FALSE, /* pc_relative */ | |
788 | 0, /* bitpos */ | |
789 | complain_overflow_dont, /* complain_on_overflow */ | |
790 | ppc_elf_unhandled_reloc, /* special_function */ | |
791 | "R_PPC_DTPREL32", /* name */ | |
792 | FALSE, /* partial_inplace */ | |
793 | 0, /* src_mask */ | |
794 | 0xffffffff, /* dst_mask */ | |
795 | FALSE), /* pcrel_offset */ | |
796 | ||
797 | /* A 16 bit dtprel reloc. */ | |
798 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
799 | 0, /* rightshift */ |
800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 16, /* bitsize */ | |
b34976b6 | 802 | FALSE, /* pc_relative */ |
252b5132 | 803 | 0, /* bitpos */ |
7619e7c7 AM |
804 | complain_overflow_signed, /* complain_on_overflow */ |
805 | ppc_elf_unhandled_reloc, /* special_function */ | |
806 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 807 | FALSE, /* partial_inplace */ |
252b5132 RH |
808 | 0, /* src_mask */ |
809 | 0xffff, /* dst_mask */ | |
b34976b6 | 810 | FALSE), /* pcrel_offset */ |
252b5132 | 811 | |
7619e7c7 AM |
812 | /* Like DTPREL16, but no overflow. */ |
813 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
814 | 0, /* rightshift */ |
815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 16, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
252b5132 | 818 | 0, /* bitpos */ |
7619e7c7 AM |
819 | complain_overflow_dont, /* complain_on_overflow */ |
820 | ppc_elf_unhandled_reloc, /* special_function */ | |
821 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
252b5132 RH |
823 | 0, /* src_mask */ |
824 | 0xffff, /* dst_mask */ | |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
252b5132 | 826 | |
7619e7c7 AM |
827 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
828 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
829 | 16, /* rightshift */ |
830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 16, /* bitsize */ | |
b34976b6 | 832 | FALSE, /* pc_relative */ |
252b5132 RH |
833 | 0, /* bitpos */ |
834 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
835 | ppc_elf_unhandled_reloc, /* special_function */ |
836 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 837 | FALSE, /* partial_inplace */ |
252b5132 RH |
838 | 0, /* src_mask */ |
839 | 0xffff, /* dst_mask */ | |
b34976b6 | 840 | FALSE), /* pcrel_offset */ |
252b5132 | 841 | |
7619e7c7 AM |
842 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
843 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
844 | 16, /* rightshift */ |
845 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
846 | 16, /* bitsize */ | |
b34976b6 | 847 | FALSE, /* pc_relative */ |
252b5132 RH |
848 | 0, /* bitpos */ |
849 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
850 | ppc_elf_unhandled_reloc, /* special_function */ |
851 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 852 | FALSE, /* partial_inplace */ |
252b5132 RH |
853 | 0, /* src_mask */ |
854 | 0xffff, /* dst_mask */ | |
b34976b6 | 855 | FALSE), /* pcrel_offset */ |
252b5132 | 856 | |
7619e7c7 AM |
857 | /* Computes a tp-relative displacement, the difference between the value of |
858 | sym+add and the value of the thread pointer (r13). */ | |
859 | HOWTO (R_PPC_TPREL32, | |
860 | 0, /* rightshift */ | |
861 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 32, /* bitsize */ | |
863 | FALSE, /* pc_relative */ | |
864 | 0, /* bitpos */ | |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
866 | ppc_elf_unhandled_reloc, /* special_function */ | |
867 | "R_PPC_TPREL32", /* name */ | |
868 | FALSE, /* partial_inplace */ | |
869 | 0, /* src_mask */ | |
870 | 0xffffffff, /* dst_mask */ | |
871 | FALSE), /* pcrel_offset */ | |
872 | ||
873 | /* A 16 bit tprel reloc. */ | |
874 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
875 | 0, /* rightshift */ |
876 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 16, /* bitsize */ | |
b34976b6 | 878 | FALSE, /* pc_relative */ |
252b5132 | 879 | 0, /* bitpos */ |
7619e7c7 AM |
880 | complain_overflow_signed, /* complain_on_overflow */ |
881 | ppc_elf_unhandled_reloc, /* special_function */ | |
882 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 883 | FALSE, /* partial_inplace */ |
252b5132 RH |
884 | 0, /* src_mask */ |
885 | 0xffff, /* dst_mask */ | |
b34976b6 | 886 | FALSE), /* pcrel_offset */ |
252b5132 | 887 | |
7619e7c7 AM |
888 | /* Like TPREL16, but no overflow. */ |
889 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
890 | 0, /* rightshift */ |
891 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
892 | 16, /* bitsize */ | |
b34976b6 | 893 | FALSE, /* pc_relative */ |
252b5132 | 894 | 0, /* bitpos */ |
7619e7c7 AM |
895 | complain_overflow_dont, /* complain_on_overflow */ |
896 | ppc_elf_unhandled_reloc, /* special_function */ | |
897 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 898 | FALSE, /* partial_inplace */ |
252b5132 RH |
899 | 0, /* src_mask */ |
900 | 0xffff, /* dst_mask */ | |
b34976b6 | 901 | FALSE), /* pcrel_offset */ |
252b5132 | 902 | |
7619e7c7 AM |
903 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
904 | HOWTO (R_PPC_TPREL16_HI, | |
905 | 16, /* rightshift */ | |
906 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 16, /* bitsize */ | |
908 | FALSE, /* pc_relative */ | |
909 | 0, /* bitpos */ | |
910 | complain_overflow_dont, /* complain_on_overflow */ | |
911 | ppc_elf_unhandled_reloc, /* special_function */ | |
912 | "R_PPC_TPREL16_HI", /* name */ | |
913 | FALSE, /* partial_inplace */ | |
914 | 0, /* src_mask */ | |
915 | 0xffff, /* dst_mask */ | |
916 | FALSE), /* pcrel_offset */ | |
917 | ||
918 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
919 | HOWTO (R_PPC_TPREL16_HA, | |
920 | 16, /* rightshift */ | |
921 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
922 | 16, /* bitsize */ | |
923 | FALSE, /* pc_relative */ | |
924 | 0, /* bitpos */ | |
925 | complain_overflow_dont, /* complain_on_overflow */ | |
926 | ppc_elf_unhandled_reloc, /* special_function */ | |
927 | "R_PPC_TPREL16_HA", /* name */ | |
928 | FALSE, /* partial_inplace */ | |
929 | 0, /* src_mask */ | |
930 | 0xffff, /* dst_mask */ | |
931 | FALSE), /* pcrel_offset */ | |
932 | ||
933 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
934 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
935 | to the first entry. */ | |
936 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
937 | 0, /* rightshift */ |
938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 16, /* bitsize */ | |
b34976b6 | 940 | FALSE, /* pc_relative */ |
252b5132 RH |
941 | 0, /* bitpos */ |
942 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
943 | ppc_elf_unhandled_reloc, /* special_function */ |
944 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 945 | FALSE, /* partial_inplace */ |
252b5132 RH |
946 | 0, /* src_mask */ |
947 | 0xffff, /* dst_mask */ | |
b34976b6 | 948 | FALSE), /* pcrel_offset */ |
252b5132 | 949 | |
7619e7c7 AM |
950 | /* Like GOT_TLSGD16, but no overflow. */ |
951 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 952 | 0, /* rightshift */ |
7619e7c7 | 953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 954 | 16, /* bitsize */ |
b34976b6 | 955 | FALSE, /* pc_relative */ |
252b5132 | 956 | 0, /* bitpos */ |
7619e7c7 AM |
957 | complain_overflow_dont, /* complain_on_overflow */ |
958 | ppc_elf_unhandled_reloc, /* special_function */ | |
959 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 960 | FALSE, /* partial_inplace */ |
252b5132 RH |
961 | 0, /* src_mask */ |
962 | 0xffff, /* dst_mask */ | |
b34976b6 | 963 | FALSE), /* pcrel_offset */ |
252b5132 | 964 | |
7619e7c7 AM |
965 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
966 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
967 | 16, /* rightshift */ | |
968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 16, /* bitsize */ | |
970 | FALSE, /* pc_relative */ | |
971 | 0, /* bitpos */ | |
972 | complain_overflow_dont, /* complain_on_overflow */ | |
973 | ppc_elf_unhandled_reloc, /* special_function */ | |
974 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
975 | FALSE, /* partial_inplace */ | |
976 | 0, /* src_mask */ | |
977 | 0xffff, /* dst_mask */ | |
978 | FALSE), /* pcrel_offset */ | |
252b5132 | 979 | |
7619e7c7 AM |
980 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
981 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
982 | 16, /* rightshift */ | |
983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 16, /* bitsize */ | |
985 | FALSE, /* pc_relative */ | |
986 | 0, /* bitpos */ | |
987 | complain_overflow_dont, /* complain_on_overflow */ | |
988 | ppc_elf_unhandled_reloc, /* special_function */ | |
989 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
990 | FALSE, /* partial_inplace */ | |
991 | 0, /* src_mask */ | |
992 | 0xffff, /* dst_mask */ | |
993 | FALSE), /* pcrel_offset */ | |
994 | ||
995 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
996 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
997 | first entry. */ | |
998 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
999 | 0, /* rightshift */ |
1000 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1001 | 16, /* bitsize */ | |
7619e7c7 | 1002 | FALSE, /* pc_relative */ |
252b5132 RH |
1003 | 0, /* bitpos */ |
1004 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1005 | ppc_elf_unhandled_reloc, /* special_function */ |
1006 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1007 | FALSE, /* partial_inplace */ |
252b5132 RH |
1008 | 0, /* src_mask */ |
1009 | 0xffff, /* dst_mask */ | |
b34976b6 | 1010 | FALSE), /* pcrel_offset */ |
252b5132 | 1011 | |
7619e7c7 AM |
1012 | /* Like GOT_TLSLD16, but no overflow. */ |
1013 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1014 | 0, /* rightshift */ |
7619e7c7 AM |
1015 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1016 | 16, /* bitsize */ | |
b34976b6 | 1017 | FALSE, /* pc_relative */ |
252b5132 RH |
1018 | 0, /* bitpos */ |
1019 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1020 | ppc_elf_unhandled_reloc, /* special_function */ |
1021 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1022 | FALSE, /* partial_inplace */ |
252b5132 | 1023 | 0, /* src_mask */ |
7619e7c7 | 1024 | 0xffff, /* dst_mask */ |
b34976b6 | 1025 | FALSE), /* pcrel_offset */ |
252b5132 | 1026 | |
7619e7c7 AM |
1027 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1028 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1029 | 16, /* rightshift */ | |
1030 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1031 | 16, /* bitsize */ | |
b34976b6 | 1032 | FALSE, /* pc_relative */ |
252b5132 RH |
1033 | 0, /* bitpos */ |
1034 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1035 | ppc_elf_unhandled_reloc, /* special_function */ |
1036 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1037 | FALSE, /* partial_inplace */ |
252b5132 | 1038 | 0, /* src_mask */ |
7619e7c7 | 1039 | 0xffff, /* dst_mask */ |
b34976b6 | 1040 | FALSE), /* pcrel_offset */ |
252b5132 | 1041 | |
7619e7c7 AM |
1042 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1043 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1044 | 16, /* rightshift */ | |
1045 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1046 | 16, /* bitsize */ | |
1047 | FALSE, /* pc_relative */ | |
1048 | 0, /* bitpos */ | |
1049 | complain_overflow_dont, /* complain_on_overflow */ | |
1050 | ppc_elf_unhandled_reloc, /* special_function */ | |
1051 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1052 | FALSE, /* partial_inplace */ | |
1053 | 0, /* src_mask */ | |
1054 | 0xffff, /* dst_mask */ | |
1055 | FALSE), /* pcrel_offset */ | |
1056 | ||
1057 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1058 | the offset to the entry. */ | |
1059 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1060 | 0, /* rightshift */ |
1061 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1062 | 16, /* bitsize */ | |
b34976b6 | 1063 | FALSE, /* pc_relative */ |
252b5132 RH |
1064 | 0, /* bitpos */ |
1065 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1066 | ppc_elf_unhandled_reloc, /* special_function */ |
1067 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1068 | FALSE, /* partial_inplace */ |
252b5132 RH |
1069 | 0, /* src_mask */ |
1070 | 0xffff, /* dst_mask */ | |
b34976b6 | 1071 | FALSE), /* pcrel_offset */ |
252b5132 | 1072 | |
7619e7c7 AM |
1073 | /* Like GOT_DTPREL16, but no overflow. */ |
1074 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1075 | 0, /* rightshift */ | |
1076 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1077 | 16, /* bitsize */ | |
1078 | FALSE, /* pc_relative */ | |
1079 | 0, /* bitpos */ | |
1080 | complain_overflow_dont, /* complain_on_overflow */ | |
1081 | ppc_elf_unhandled_reloc, /* special_function */ | |
1082 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1083 | FALSE, /* partial_inplace */ | |
1084 | 0, /* src_mask */ | |
1085 | 0xffff, /* dst_mask */ | |
1086 | FALSE), /* pcrel_offset */ | |
252b5132 | 1087 | |
7619e7c7 AM |
1088 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1089 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1090 | 16, /* rightshift */ | |
1091 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1092 | 16, /* bitsize */ | |
1093 | FALSE, /* pc_relative */ | |
1094 | 0, /* bitpos */ | |
1095 | complain_overflow_dont, /* complain_on_overflow */ | |
1096 | ppc_elf_unhandled_reloc, /* special_function */ | |
1097 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1098 | FALSE, /* partial_inplace */ | |
1099 | 0, /* src_mask */ | |
1100 | 0xffff, /* dst_mask */ | |
1101 | FALSE), /* pcrel_offset */ | |
252b5132 | 1102 | |
7619e7c7 AM |
1103 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1104 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1105 | 16, /* rightshift */ | |
1106 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1107 | 16, /* bitsize */ | |
1108 | FALSE, /* pc_relative */ | |
1109 | 0, /* bitpos */ | |
1110 | complain_overflow_dont, /* complain_on_overflow */ | |
1111 | ppc_elf_unhandled_reloc, /* special_function */ | |
1112 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1113 | FALSE, /* partial_inplace */ | |
1114 | 0, /* src_mask */ | |
1115 | 0xffff, /* dst_mask */ | |
1116 | FALSE), /* pcrel_offset */ | |
c3668558 | 1117 | |
7619e7c7 AM |
1118 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1119 | offset to the entry. */ | |
1120 | HOWTO (R_PPC_GOT_TPREL16, | |
1121 | 0, /* rightshift */ | |
1122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1123 | 16, /* bitsize */ | |
1124 | FALSE, /* pc_relative */ | |
1125 | 0, /* bitpos */ | |
1126 | complain_overflow_signed, /* complain_on_overflow */ | |
1127 | ppc_elf_unhandled_reloc, /* special_function */ | |
1128 | "R_PPC_GOT_TPREL16", /* name */ | |
1129 | FALSE, /* partial_inplace */ | |
1130 | 0, /* src_mask */ | |
1131 | 0xffff, /* dst_mask */ | |
1132 | FALSE), /* pcrel_offset */ | |
1133 | ||
1134 | /* Like GOT_TPREL16, but no overflow. */ | |
1135 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1136 | 0, /* rightshift */ | |
1137 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1138 | 16, /* bitsize */ | |
1139 | FALSE, /* pc_relative */ | |
1140 | 0, /* bitpos */ | |
1141 | complain_overflow_dont, /* complain_on_overflow */ | |
1142 | ppc_elf_unhandled_reloc, /* special_function */ | |
1143 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1144 | FALSE, /* partial_inplace */ | |
1145 | 0, /* src_mask */ | |
1146 | 0xffff, /* dst_mask */ | |
1147 | FALSE), /* pcrel_offset */ | |
1148 | ||
1149 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1150 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1151 | 16, /* rightshift */ | |
1152 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1153 | 16, /* bitsize */ | |
1154 | FALSE, /* pc_relative */ | |
1155 | 0, /* bitpos */ | |
1156 | complain_overflow_dont, /* complain_on_overflow */ | |
1157 | ppc_elf_unhandled_reloc, /* special_function */ | |
1158 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1159 | FALSE, /* partial_inplace */ | |
1160 | 0, /* src_mask */ | |
1161 | 0xffff, /* dst_mask */ | |
1162 | FALSE), /* pcrel_offset */ | |
1163 | ||
1164 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1165 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1166 | 16, /* rightshift */ | |
1167 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1168 | 16, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
1170 | 0, /* bitpos */ | |
1171 | complain_overflow_dont, /* complain_on_overflow */ | |
1172 | ppc_elf_unhandled_reloc, /* special_function */ | |
1173 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1174 | FALSE, /* partial_inplace */ | |
1175 | 0, /* src_mask */ | |
1176 | 0xffff, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
1178 | ||
1179 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1180 | in the SVR4 ELF ABI. */ | |
1181 | ||
1182 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1183 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1184 | 0, /* rightshift */ | |
1185 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1186 | 32, /* bitsize */ | |
1187 | FALSE, /* pc_relative */ | |
1188 | 0, /* bitpos */ | |
1189 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1190 | bfd_elf_generic_reloc, /* special_function */ | |
1191 | "R_PPC_EMB_NADDR32", /* name */ | |
1192 | FALSE, /* partial_inplace */ | |
1193 | 0, /* src_mask */ | |
1194 | 0xffffffff, /* dst_mask */ | |
1195 | FALSE), /* pcrel_offset */ | |
1196 | ||
1197 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1198 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1199 | 0, /* rightshift */ | |
1200 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1201 | 16, /* bitsize */ | |
1202 | FALSE, /* pc_relative */ | |
1203 | 0, /* bitpos */ | |
1204 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1205 | bfd_elf_generic_reloc, /* special_function */ | |
1206 | "R_PPC_EMB_NADDR16", /* name */ | |
1207 | FALSE, /* partial_inplace */ | |
1208 | 0, /* src_mask */ | |
1209 | 0xffff, /* dst_mask */ | |
1210 | FALSE), /* pcrel_offset */ | |
1211 | ||
1212 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1213 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1214 | 0, /* rightshift */ | |
1215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1216 | 16, /* bitsize */ | |
1217 | FALSE, /* pc_relative */ | |
1218 | 0, /* bitpos */ | |
1219 | complain_overflow_dont,/* complain_on_overflow */ | |
1220 | bfd_elf_generic_reloc, /* special_function */ | |
1221 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1222 | FALSE, /* partial_inplace */ | |
1223 | 0, /* src_mask */ | |
1224 | 0xffff, /* dst_mask */ | |
1225 | FALSE), /* pcrel_offset */ | |
1226 | ||
1227 | /* The high order 16 bits of the addend minus the symbol. */ | |
1228 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1229 | 16, /* rightshift */ | |
1230 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1231 | 16, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_dont, /* complain_on_overflow */ | |
1235 | bfd_elf_generic_reloc, /* special_function */ | |
1236 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1237 | FALSE, /* partial_inplace */ | |
1238 | 0, /* src_mask */ | |
1239 | 0xffff, /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
1242 | /* The high order 16 bits of the result of the addend minus the address, | |
1243 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1244 | is negative. */ | |
1245 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1246 | 16, /* rightshift */ | |
1247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1248 | 16, /* bitsize */ | |
1249 | FALSE, /* pc_relative */ | |
1250 | 0, /* bitpos */ | |
1251 | complain_overflow_dont, /* complain_on_overflow */ | |
25dbc73a AM |
1252 | ppc_elf_addr16_ha_reloc, /* special_function */ |
1253 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1254 | FALSE, /* partial_inplace */ | |
1255 | 0, /* src_mask */ | |
1256 | 0xffff, /* dst_mask */ | |
1257 | FALSE), /* pcrel_offset */ | |
1258 | ||
1259 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1260 | address in the .sdata section, and returning the offset from | |
1261 | _SDA_BASE_ for that relocation. */ | |
1262 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1263 | 0, /* rightshift */ | |
1264 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1265 | 16, /* bitsize */ | |
1266 | FALSE, /* pc_relative */ | |
1267 | 0, /* bitpos */ | |
1268 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1269 | bfd_elf_generic_reloc, /* special_function */ | |
1270 | "R_PPC_EMB_SDAI16", /* name */ | |
1271 | FALSE, /* partial_inplace */ | |
1272 | 0, /* src_mask */ | |
1273 | 0xffff, /* dst_mask */ | |
1274 | FALSE), /* pcrel_offset */ | |
1275 | ||
1276 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1277 | address in the .sdata2 section, and returning the offset from | |
1278 | _SDA2_BASE_ for that relocation. */ | |
1279 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1280 | 0, /* rightshift */ | |
1281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 16, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1286 | bfd_elf_generic_reloc, /* special_function */ | |
1287 | "R_PPC_EMB_SDA2I16", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0xffff, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
1293 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1294 | small data items. */ | |
1295 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1296 | 0, /* rightshift */ | |
1297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 16, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_signed, /* complain_on_overflow */ | |
1302 | bfd_elf_generic_reloc, /* special_function */ | |
1303 | "R_PPC_EMB_SDA2REL", /* name */ | |
1304 | FALSE, /* partial_inplace */ | |
1305 | 0, /* src_mask */ | |
1306 | 0xffff, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
1309 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1310 | signed offset from the appropriate base, and filling in the register | |
1311 | field with the appropriate register (0, 2, or 13). */ | |
1312 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 16, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_signed, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_PPC_EMB_SDA21", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0xffff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1327 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1328 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1329 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1330 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1331 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1332 | ||
1333 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1334 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1335 | register field with the appropriate register (0, 2, or 13). */ | |
1336 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1337 | 0, /* rightshift */ | |
1338 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 16, /* bitsize */ | |
1340 | TRUE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
1342 | complain_overflow_signed, /* complain_on_overflow */ | |
1343 | bfd_elf_generic_reloc, /* special_function */ | |
1344 | "R_PPC_EMB_RELSDA", /* name */ | |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0, /* src_mask */ | |
1347 | 0xffff, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
d7128ce4 AM |
1350 | /* A 16 bit relative relocation. */ |
1351 | HOWTO (R_PPC_REL16, /* type */ | |
1352 | 0, /* rightshift */ | |
1353 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1354 | 16, /* bitsize */ | |
1355 | TRUE, /* pc_relative */ | |
1356 | 0, /* bitpos */ | |
1357 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1358 | bfd_elf_generic_reloc, /* special_function */ | |
1359 | "R_PPC_REL16", /* name */ | |
1360 | FALSE, /* partial_inplace */ | |
1361 | 0, /* src_mask */ | |
1362 | 0xffff, /* dst_mask */ | |
1363 | TRUE), /* pcrel_offset */ | |
1364 | ||
1365 | /* A 16 bit relative relocation without overflow. */ | |
1366 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1367 | 0, /* rightshift */ | |
1368 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1369 | 16, /* bitsize */ | |
1370 | TRUE, /* pc_relative */ | |
1371 | 0, /* bitpos */ | |
1372 | complain_overflow_dont,/* complain_on_overflow */ | |
1373 | bfd_elf_generic_reloc, /* special_function */ | |
1374 | "R_PPC_REL16_LO", /* name */ | |
1375 | FALSE, /* partial_inplace */ | |
1376 | 0, /* src_mask */ | |
1377 | 0xffff, /* dst_mask */ | |
1378 | TRUE), /* pcrel_offset */ | |
1379 | ||
1380 | /* The high order 16 bits of a relative address. */ | |
1381 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1382 | 16, /* rightshift */ | |
1383 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1384 | 16, /* bitsize */ | |
1385 | TRUE, /* pc_relative */ | |
1386 | 0, /* bitpos */ | |
1387 | complain_overflow_dont, /* complain_on_overflow */ | |
1388 | bfd_elf_generic_reloc, /* special_function */ | |
1389 | "R_PPC_REL16_HI", /* name */ | |
1390 | FALSE, /* partial_inplace */ | |
1391 | 0, /* src_mask */ | |
1392 | 0xffff, /* dst_mask */ | |
1393 | TRUE), /* pcrel_offset */ | |
1394 | ||
1395 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1396 | the low 16 bits, treated as a signed number, is negative. */ | |
1397 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1398 | 16, /* rightshift */ | |
1399 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1400 | 16, /* bitsize */ | |
1401 | TRUE, /* pc_relative */ | |
1402 | 0, /* bitpos */ | |
1403 | complain_overflow_dont, /* complain_on_overflow */ | |
1404 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1405 | "R_PPC_REL16_HA", /* name */ | |
1406 | FALSE, /* partial_inplace */ | |
1407 | 0, /* src_mask */ | |
1408 | 0xffff, /* dst_mask */ | |
1409 | TRUE), /* pcrel_offset */ | |
1410 | ||
25dbc73a AM |
1411 | /* GNU extension to record C++ vtable hierarchy. */ |
1412 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1413 | 0, /* rightshift */ | |
1414 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1415 | 0, /* bitsize */ | |
1416 | FALSE, /* pc_relative */ | |
1417 | 0, /* bitpos */ | |
1418 | complain_overflow_dont, /* complain_on_overflow */ | |
1419 | NULL, /* special_function */ | |
1420 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1421 | FALSE, /* partial_inplace */ | |
1422 | 0, /* src_mask */ | |
1423 | 0, /* dst_mask */ | |
1424 | FALSE), /* pcrel_offset */ | |
1425 | ||
1426 | /* GNU extension to record C++ vtable member usage. */ | |
1427 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1428 | 0, /* rightshift */ | |
1429 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1430 | 0, /* bitsize */ | |
1431 | FALSE, /* pc_relative */ | |
1432 | 0, /* bitpos */ | |
1433 | complain_overflow_dont, /* complain_on_overflow */ | |
1434 | NULL, /* special_function */ | |
1435 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1436 | FALSE, /* partial_inplace */ |
1437 | 0, /* src_mask */ | |
25dbc73a | 1438 | 0, /* dst_mask */ |
7619e7c7 AM |
1439 | FALSE), /* pcrel_offset */ |
1440 | ||
25dbc73a AM |
1441 | /* Phony reloc to handle AIX style TOC entries. */ |
1442 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1443 | 0, /* rightshift */ |
1444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1445 | 16, /* bitsize */ | |
1446 | FALSE, /* pc_relative */ | |
1447 | 0, /* bitpos */ | |
25dbc73a | 1448 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1449 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1450 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1451 | FALSE, /* partial_inplace */ |
1452 | 0, /* src_mask */ | |
1453 | 0xffff, /* dst_mask */ | |
1454 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1455 | }; |
1456 | \f | |
1457 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1458 | ||
1459 | static void | |
1460 | ppc_elf_howto_init (void) | |
1461 | { | |
1462 | unsigned int i, type; | |
1463 | ||
1464 | for (i = 0; | |
1465 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1466 | i++) | |
1467 | { | |
1468 | type = ppc_elf_howto_raw[i].type; | |
1469 | if (type >= (sizeof (ppc_elf_howto_table) | |
1470 | / sizeof (ppc_elf_howto_table[0]))) | |
1471 | abort (); | |
1472 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | static reloc_howto_type * | |
1477 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1478 | bfd_reloc_code_real_type code) | |
1479 | { | |
1480 | enum elf_ppc_reloc_type r; | |
1481 | ||
1482 | /* Initialize howto table if not already done. */ | |
1483 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1484 | ppc_elf_howto_init (); | |
1485 | ||
1486 | switch (code) | |
1487 | { | |
1488 | default: | |
1489 | return NULL; | |
1490 | ||
1491 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1492 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1493 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1494 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
1495 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
1496 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1497 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1498 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1499 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1500 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1501 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1502 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1503 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1504 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1505 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
1506 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
1507 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1508 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1509 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1510 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1511 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1512 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1513 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1514 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1515 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1516 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
1517 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1518 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1519 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1520 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
1521 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
1522 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1523 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1524 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1525 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
1526 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
1527 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; | |
1528 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
1529 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
1530 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1531 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1532 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1533 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
1534 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
1535 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1536 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1537 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1538 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1539 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1540 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1541 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1542 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1543 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1544 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1545 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1546 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1547 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1548 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1549 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1550 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1551 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1552 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1553 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1554 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1555 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1556 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1557 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1558 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1559 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1560 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1561 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1562 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1563 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1564 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1565 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1566 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1567 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1568 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1569 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
d7128ce4 AM |
1570 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1571 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1572 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1573 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
25dbc73a AM |
1574 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1575 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1576 | } | |
1577 | ||
1578 | return ppc_elf_howto_table[r]; | |
1579 | }; | |
1580 | ||
157090f7 AM |
1581 | static reloc_howto_type * |
1582 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1583 | const char *r_name) | |
1584 | { | |
1585 | unsigned int i; | |
1586 | ||
1587 | for (i = 0; | |
1588 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1589 | i++) | |
1590 | if (ppc_elf_howto_raw[i].name != NULL | |
1591 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
1592 | return &ppc_elf_howto_raw[i]; | |
1593 | ||
1594 | return NULL; | |
1595 | } | |
1596 | ||
25dbc73a AM |
1597 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1598 | ||
1599 | static void | |
1600 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1601 | arelent *cache_ptr, | |
1602 | Elf_Internal_Rela *dst) | |
1603 | { | |
1604 | /* Initialize howto table if not already done. */ | |
1605 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1606 | ppc_elf_howto_init (); | |
1607 | ||
1608 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1609 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1610 | } | |
1611 | ||
d7128ce4 | 1612 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
1613 | |
1614 | static bfd_reloc_status_type | |
1615 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
1616 | arelent *reloc_entry, | |
1617 | asymbol *symbol, | |
1618 | void *data ATTRIBUTE_UNUSED, | |
1619 | asection *input_section, | |
1620 | bfd *output_bfd, | |
1621 | char **error_message ATTRIBUTE_UNUSED) | |
1622 | { | |
1623 | bfd_vma relocation; | |
1624 | ||
1625 | if (output_bfd != NULL) | |
1626 | { | |
1627 | reloc_entry->address += input_section->output_offset; | |
1628 | return bfd_reloc_ok; | |
1629 | } | |
1630 | ||
1631 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
1632 | return bfd_reloc_outofrange; | |
1633 | ||
1634 | if (bfd_is_com_section (symbol->section)) | |
1635 | relocation = 0; | |
1636 | else | |
1637 | relocation = symbol->value; | |
1638 | ||
1639 | relocation += symbol->section->output_section->vma; | |
1640 | relocation += symbol->section->output_offset; | |
1641 | relocation += reloc_entry->addend; | |
d7128ce4 AM |
1642 | if (reloc_entry->howto->pc_relative) |
1643 | relocation -= reloc_entry->address; | |
25dbc73a AM |
1644 | |
1645 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1646 | ||
1647 | return bfd_reloc_continue; | |
1648 | } | |
1649 | ||
1650 | static bfd_reloc_status_type | |
1651 | ppc_elf_unhandled_reloc (bfd *abfd, | |
1652 | arelent *reloc_entry, | |
1653 | asymbol *symbol, | |
1654 | void *data, | |
1655 | asection *input_section, | |
1656 | bfd *output_bfd, | |
1657 | char **error_message) | |
1658 | { | |
1659 | /* If this is a relocatable link (output_bfd test tells us), just | |
1660 | call the generic function. Any adjustment will be done at final | |
1661 | link time. */ | |
1662 | if (output_bfd != NULL) | |
1663 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1664 | input_section, output_bfd, error_message); | |
1665 | ||
1666 | if (error_message != NULL) | |
1667 | { | |
1668 | static char buf[60]; | |
1669 | sprintf (buf, _("generic linker can't handle %s"), | |
1670 | reloc_entry->howto->name); | |
1671 | *error_message = buf; | |
1672 | } | |
1673 | return bfd_reloc_dangerous; | |
1674 | } | |
1675 | \f | |
1676 | /* Sections created by the linker. */ | |
1677 | ||
1678 | typedef struct elf_linker_section | |
1679 | { | |
c9a2f333 | 1680 | /* Pointer to the bfd section. */ |
25dbc73a | 1681 | asection *section; |
c9a2f333 AM |
1682 | /* Section name. */ |
1683 | const char *name; | |
1684 | /* Associated bss section name. */ | |
1685 | const char *bss_name; | |
1686 | /* Associated symbol name. */ | |
1687 | const char *sym_name; | |
046183de AM |
1688 | /* Associated symbol. */ |
1689 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1690 | } elf_linker_section_t; |
1691 | ||
1692 | /* Linked list of allocated pointer entries. This hangs off of the | |
1693 | symbol lists, and provides allows us to return different pointers, | |
1694 | based on different addend's. */ | |
1695 | ||
1696 | typedef struct elf_linker_section_pointers | |
1697 | { | |
1698 | /* next allocated pointer for this symbol */ | |
1699 | struct elf_linker_section_pointers *next; | |
1700 | /* offset of pointer from beginning of section */ | |
1701 | bfd_vma offset; | |
1702 | /* addend used */ | |
1703 | bfd_vma addend; | |
1704 | /* which linker section this is */ | |
1705 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1706 | } elf_linker_section_pointers_t; |
1707 | ||
1708 | struct ppc_elf_obj_tdata | |
1709 | { | |
1710 | struct elf_obj_tdata elf; | |
1711 | ||
1712 | /* A mapping from local symbols to offsets into the various linker | |
1713 | sections added. This is index by the symbol index. */ | |
1714 | elf_linker_section_pointers_t **linker_section_pointers; | |
1715 | }; | |
1716 | ||
1717 | #define ppc_elf_tdata(bfd) \ | |
1718 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1719 | |
25dbc73a AM |
1720 | #define elf_local_ptr_offsets(bfd) \ |
1721 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1722 | |
25dbc73a | 1723 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1724 | |
25dbc73a AM |
1725 | static bfd_boolean |
1726 | ppc_elf_mkobject (bfd *abfd) | |
1727 | { | |
25dbc73a | 1728 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
1729 | { |
1730 | bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata); | |
1731 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1732 | if (abfd->tdata.any == NULL) | |
1733 | return FALSE; | |
1734 | } | |
1735 | return bfd_elf_mkobject (abfd); | |
25dbc73a | 1736 | } |
7619e7c7 | 1737 | |
25dbc73a AM |
1738 | /* Fix bad default arch selected for a 32 bit input bfd when the |
1739 | default is 64 bit. */ | |
7619e7c7 | 1740 | |
25dbc73a AM |
1741 | static bfd_boolean |
1742 | ppc_elf_object_p (bfd *abfd) | |
1743 | { | |
1744 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
1745 | { | |
1746 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1747 | |
25dbc73a AM |
1748 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1749 | { | |
1750 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1751 | abfd->arch_info = abfd->arch_info->next; | |
1752 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1753 | } | |
1754 | } | |
1755 | return TRUE; | |
1756 | } | |
7619e7c7 | 1757 | |
25dbc73a | 1758 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1759 | |
25dbc73a AM |
1760 | static bfd_boolean |
1761 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1762 | { | |
1763 | BFD_ASSERT (!elf_flags_init (abfd) | |
1764 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1765 | |
25dbc73a AM |
1766 | elf_elfheader (abfd)->e_flags = flags; |
1767 | elf_flags_init (abfd) = TRUE; | |
1768 | return TRUE; | |
1769 | } | |
1770 | ||
25dbc73a | 1771 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1772 | |
b34976b6 | 1773 | static bfd_boolean |
25dbc73a | 1774 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1775 | { |
25dbc73a AM |
1776 | int offset; |
1777 | unsigned int size; | |
252b5132 | 1778 | |
25dbc73a AM |
1779 | switch (note->descsz) |
1780 | { | |
1781 | default: | |
1782 | return FALSE; | |
252b5132 | 1783 | |
25dbc73a AM |
1784 | case 268: /* Linux/PPC. */ |
1785 | /* pr_cursig */ | |
1786 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
deaaf2f3 | 1787 | |
25dbc73a AM |
1788 | /* pr_pid */ |
1789 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9abc968f | 1790 | |
25dbc73a AM |
1791 | /* pr_reg */ |
1792 | offset = 72; | |
1793 | size = 192; | |
deaaf2f3 | 1794 | |
25dbc73a AM |
1795 | break; |
1796 | } | |
deaaf2f3 | 1797 | |
25dbc73a AM |
1798 | /* Make a ".reg/999" section. */ |
1799 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1800 | size, note->descpos + offset); | |
1801 | } | |
252b5132 | 1802 | |
25dbc73a AM |
1803 | static bfd_boolean |
1804 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1805 | { | |
1806 | switch (note->descsz) | |
deaaf2f3 | 1807 | { |
25dbc73a AM |
1808 | default: |
1809 | return FALSE; | |
deaaf2f3 | 1810 | |
25dbc73a AM |
1811 | case 128: /* Linux/PPC elf_prpsinfo. */ |
1812 | elf_tdata (abfd)->core_program | |
1813 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1814 | elf_tdata (abfd)->core_command | |
1815 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1816 | } | |
9abc968f | 1817 | |
25dbc73a AM |
1818 | /* Note that for some reason, a spurious space is tacked |
1819 | onto the end of the args in some (at least one anyway) | |
1820 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1821 | |
25dbc73a AM |
1822 | { |
1823 | char *command = elf_tdata (abfd)->core_command; | |
1824 | int n = strlen (command); | |
70bccea4 | 1825 | |
25dbc73a AM |
1826 | if (0 < n && command[n - 1] == ' ') |
1827 | command[n - 1] = '\0'; | |
1828 | } | |
deaaf2f3 | 1829 | |
25dbc73a AM |
1830 | return TRUE; |
1831 | } | |
deaaf2f3 | 1832 | |
183e98be AM |
1833 | static char * |
1834 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
1835 | { | |
1836 | switch (note_type) | |
1837 | { | |
1838 | default: | |
1839 | return NULL; | |
1840 | ||
1841 | case NT_PRPSINFO: | |
1842 | { | |
1843 | char data[128]; | |
1844 | va_list ap; | |
1845 | ||
1846 | va_start (ap, note_type); | |
1847 | memset (data, 0, 32); | |
1848 | strncpy (data + 32, va_arg (ap, const char *), 16); | |
1849 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
1850 | va_end (ap); | |
1851 | return elfcore_write_note (abfd, buf, bufsiz, | |
1852 | "CORE", note_type, data, sizeof (data)); | |
1853 | } | |
1854 | ||
1855 | case NT_PRSTATUS: | |
1856 | { | |
1857 | char data[268]; | |
1858 | va_list ap; | |
1859 | long pid; | |
1860 | int cursig; | |
1861 | const void *greg; | |
1862 | ||
1863 | va_start (ap, note_type); | |
1864 | memset (data, 0, 72); | |
1865 | pid = va_arg (ap, long); | |
1866 | bfd_put_32 (abfd, pid, data + 24); | |
1867 | cursig = va_arg (ap, int); | |
1868 | bfd_put_16 (abfd, cursig, data + 12); | |
1869 | greg = va_arg (ap, const void *); | |
1870 | memcpy (data + 72, greg, 192); | |
1871 | memset (data + 264, 0, 4); | |
1872 | va_end (ap); | |
1873 | return elfcore_write_note (abfd, buf, bufsiz, | |
1874 | "CORE", note_type, data, sizeof (data)); | |
1875 | } | |
1876 | } | |
1877 | } | |
1878 | ||
25dbc73a AM |
1879 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1880 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1881 | |
25dbc73a AM |
1882 | static bfd_vma |
1883 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1884 | const asection *plt ATTRIBUTE_UNUSED, | |
1885 | const arelent *rel) | |
1886 | { | |
1887 | return rel->address; | |
1888 | } | |
deaaf2f3 | 1889 | |
25dbc73a | 1890 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1891 | is called when bfd_section_from_shdr finds a section with an unknown |
1892 | type. */ | |
deaaf2f3 | 1893 | |
25dbc73a | 1894 | static bfd_boolean |
6dc132d9 L |
1895 | ppc_elf_section_from_shdr (bfd *abfd, |
1896 | Elf_Internal_Shdr *hdr, | |
1897 | const char *name, | |
1898 | int shindex) | |
25dbc73a AM |
1899 | { |
1900 | asection *newsect; | |
1901 | flagword flags; | |
d1c6de6f | 1902 | |
6dc132d9 | 1903 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1904 | return FALSE; |
deaaf2f3 | 1905 | |
25dbc73a AM |
1906 | newsect = hdr->bfd_section; |
1907 | flags = bfd_get_section_flags (abfd, newsect); | |
1908 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1909 | flags |= SEC_EXCLUDE; | |
9abc968f | 1910 | |
25dbc73a AM |
1911 | if (hdr->sh_type == SHT_ORDERED) |
1912 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1913 | |
25dbc73a AM |
1914 | bfd_set_section_flags (abfd, newsect, flags); |
1915 | return TRUE; | |
1916 | } | |
1917 | ||
1918 | /* Set up any other section flags and such that may be necessary. */ | |
1919 | ||
1920 | static bfd_boolean | |
1921 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1922 | Elf_Internal_Shdr *shdr, | |
1923 | asection *asect) | |
1924 | { | |
d30e8e7c | 1925 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
25dbc73a AM |
1926 | shdr->sh_flags |= SHF_EXCLUDE; |
1927 | ||
1928 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1929 | shdr->sh_type = SHT_ORDERED; | |
1930 | ||
1931 | return TRUE; | |
1932 | } | |
1933 | ||
1934 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1935 | need to bump up the number of section headers. */ | |
1936 | ||
1937 | static int | |
a6b96beb AM |
1938 | ppc_elf_additional_program_headers (bfd *abfd, |
1939 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
1940 | { |
1941 | asection *s; | |
1942 | int ret = 0; | |
d1c6de6f | 1943 | |
25dbc73a AM |
1944 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1945 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1946 | ++ret; | |
d1c6de6f | 1947 | |
25dbc73a AM |
1948 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1949 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1950 | ++ret; | |
deaaf2f3 | 1951 | |
25dbc73a AM |
1952 | return ret; |
1953 | } | |
deaaf2f3 | 1954 | |
25dbc73a AM |
1955 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1956 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1957 | that the linker doesn't crater when trying to make more than | |
1958 | 2 sections. */ | |
e656e369 | 1959 | |
b35d266b | 1960 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 1961 | { |
0112cd26 NC |
1962 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1963 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
1964 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1965 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1966 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1967 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
1968 | { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 }, | |
1969 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1970 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1971 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1972 | }; |
1973 | ||
551b43fd AM |
1974 | /* This is what we want for new plt/got. */ |
1975 | static struct bfd_elf_special_section ppc_alt_plt = | |
0112cd26 | 1976 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
1977 | |
1978 | static const struct bfd_elf_special_section * | |
1979 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 1980 | { |
b35d266b | 1981 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
1982 | |
1983 | /* See if this is one of the special sections. */ | |
1984 | if (sec->name == NULL) | |
1985 | return NULL; | |
1986 | ||
1987 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
1988 | sec->use_rela_p); | |
1989 | if (ssect != NULL) | |
1990 | { | |
1991 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
1992 | ssect = &ppc_alt_plt; | |
1993 | return ssect; | |
1994 | } | |
1995 | ||
1996 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
1997 | } | |
25dbc73a AM |
1998 | \f |
1999 | /* Very simple linked list structure for recording apuinfo values. */ | |
2000 | typedef struct apuinfo_list | |
2001 | { | |
2002 | struct apuinfo_list *next; | |
2003 | unsigned long value; | |
2004 | } | |
2005 | apuinfo_list; | |
e656e369 | 2006 | |
25dbc73a | 2007 | static apuinfo_list *head; |
deaaf2f3 | 2008 | |
deaaf2f3 | 2009 | |
25dbc73a AM |
2010 | static void |
2011 | apuinfo_list_init (void) | |
2012 | { | |
2013 | head = NULL; | |
2014 | } | |
9abc968f | 2015 | |
25dbc73a AM |
2016 | static void |
2017 | apuinfo_list_add (unsigned long value) | |
2018 | { | |
2019 | apuinfo_list *entry = head; | |
deaaf2f3 | 2020 | |
25dbc73a AM |
2021 | while (entry != NULL) |
2022 | { | |
2023 | if (entry->value == value) | |
2024 | return; | |
2025 | entry = entry->next; | |
2026 | } | |
b4a38de6 | 2027 | |
25dbc73a AM |
2028 | entry = bfd_malloc (sizeof (* entry)); |
2029 | if (entry == NULL) | |
2030 | return; | |
e656e369 | 2031 | |
25dbc73a AM |
2032 | entry->value = value; |
2033 | entry->next = head; | |
2034 | head = entry; | |
2035 | } | |
9abc968f | 2036 | |
25dbc73a AM |
2037 | static unsigned |
2038 | apuinfo_list_length (void) | |
2039 | { | |
2040 | apuinfo_list *entry; | |
2041 | unsigned long count; | |
9abc968f | 2042 | |
25dbc73a AM |
2043 | for (entry = head, count = 0; |
2044 | entry; | |
2045 | entry = entry->next) | |
2046 | ++ count; | |
e656e369 | 2047 | |
25dbc73a AM |
2048 | return count; |
2049 | } | |
eea6121a | 2050 | |
25dbc73a AM |
2051 | static inline unsigned long |
2052 | apuinfo_list_element (unsigned long number) | |
2053 | { | |
2054 | apuinfo_list * entry; | |
e656e369 | 2055 | |
25dbc73a AM |
2056 | for (entry = head; |
2057 | entry && number --; | |
2058 | entry = entry->next) | |
2059 | ; | |
252b5132 | 2060 | |
25dbc73a AM |
2061 | return entry ? entry->value : 0; |
2062 | } | |
2063 | ||
2064 | static void | |
2065 | apuinfo_list_finish (void) | |
2066 | { | |
2067 | apuinfo_list *entry; | |
2068 | ||
2069 | for (entry = head; entry;) | |
252b5132 | 2070 | { |
25dbc73a AM |
2071 | apuinfo_list *next = entry->next; |
2072 | free (entry); | |
2073 | entry = next; | |
2074 | } | |
9abc968f | 2075 | |
25dbc73a AM |
2076 | head = NULL; |
2077 | } | |
9abc968f | 2078 | |
25dbc73a AM |
2079 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2080 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2081 | |
25dbc73a AM |
2082 | /* Scan the input BFDs and create a linked list of |
2083 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2084 | |
25dbc73a AM |
2085 | static void |
2086 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2087 | { | |
2088 | bfd *ibfd; | |
2089 | asection *asec; | |
2090 | char *buffer; | |
2091 | unsigned num_input_sections; | |
2092 | bfd_size_type output_section_size; | |
2093 | unsigned i; | |
2094 | unsigned num_entries; | |
2095 | unsigned long offset; | |
2096 | unsigned long length; | |
2097 | const char *error_message = NULL; | |
9abc968f | 2098 | |
25dbc73a AM |
2099 | if (link_info == NULL) |
2100 | return; | |
9abc968f | 2101 | |
25dbc73a AM |
2102 | /* Scan the input bfds, looking for apuinfo sections. */ |
2103 | num_input_sections = 0; | |
2104 | output_section_size = 0; | |
252b5132 | 2105 | |
25dbc73a | 2106 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) |
252b5132 | 2107 | { |
25dbc73a AM |
2108 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2109 | if (asec) | |
252b5132 | 2110 | { |
25dbc73a AM |
2111 | ++ num_input_sections; |
2112 | output_section_size += asec->size; | |
252b5132 | 2113 | } |
252b5132 RH |
2114 | } |
2115 | ||
25dbc73a AM |
2116 | /* We need at least one input sections |
2117 | in order to make merging worthwhile. */ | |
2118 | if (num_input_sections < 1) | |
2119 | return; | |
deaaf2f3 | 2120 | |
25dbc73a AM |
2121 | /* Just make sure that the output section exists as well. */ |
2122 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2123 | if (asec == NULL) | |
2124 | return; | |
252b5132 | 2125 | |
25dbc73a AM |
2126 | /* Allocate a buffer for the contents of the input sections. */ |
2127 | buffer = bfd_malloc (output_section_size); | |
2128 | if (buffer == NULL) | |
2129 | return; | |
252b5132 | 2130 | |
25dbc73a AM |
2131 | offset = 0; |
2132 | apuinfo_list_init (); | |
252b5132 | 2133 | |
25dbc73a AM |
2134 | /* Read in the input sections contents. */ |
2135 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
252b5132 | 2136 | { |
25dbc73a AM |
2137 | unsigned long datum; |
2138 | char *ptr; | |
252b5132 | 2139 | |
25dbc73a AM |
2140 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2141 | if (asec == NULL) | |
2142 | continue; | |
252b5132 | 2143 | |
25dbc73a AM |
2144 | length = asec->size; |
2145 | if (length < 24) | |
2146 | { | |
2147 | error_message = _("corrupt or empty %s section in %B"); | |
2148 | goto fail; | |
2149 | } | |
252b5132 | 2150 | |
25dbc73a AM |
2151 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
2152 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
2153 | { | |
2154 | error_message = _("unable to read in %s section from %B"); | |
2155 | goto fail; | |
2156 | } | |
252b5132 | 2157 | |
25dbc73a AM |
2158 | /* Process the contents of the section. */ |
2159 | ptr = buffer + offset; | |
2160 | error_message = _("corrupt %s section in %B"); | |
252b5132 | 2161 | |
25dbc73a AM |
2162 | /* Verify the contents of the header. Note - we have to |
2163 | extract the values this way in order to allow for a | |
2164 | host whose endian-ness is different from the target. */ | |
2165 | datum = bfd_get_32 (ibfd, ptr); | |
2166 | if (datum != sizeof APUINFO_LABEL) | |
2167 | goto fail; | |
252b5132 | 2168 | |
25dbc73a AM |
2169 | datum = bfd_get_32 (ibfd, ptr + 8); |
2170 | if (datum != 0x2) | |
2171 | goto fail; | |
252b5132 | 2172 | |
25dbc73a AM |
2173 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) |
2174 | goto fail; | |
252b5132 | 2175 | |
25dbc73a AM |
2176 | /* Get the number of bytes used for apuinfo entries. */ |
2177 | datum = bfd_get_32 (ibfd, ptr + 4); | |
2178 | if (datum + 20 != length) | |
2179 | goto fail; | |
2180 | ||
2181 | /* Make sure that we do not run off the end of the section. */ | |
2182 | if (offset + length > output_section_size) | |
2183 | goto fail; | |
2184 | ||
2185 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
2186 | for (i = 0; i < datum; i += 4) | |
2187 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
2188 | ||
2189 | /* Update the offset. */ | |
2190 | offset += length; | |
252b5132 RH |
2191 | } |
2192 | ||
25dbc73a | 2193 | error_message = NULL; |
252b5132 | 2194 | |
25dbc73a AM |
2195 | /* Compute the size of the output section. */ |
2196 | num_entries = apuinfo_list_length (); | |
2197 | output_section_size = 20 + num_entries * 4; | |
252b5132 | 2198 | |
25dbc73a AM |
2199 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2200 | ||
2201 | if (! bfd_set_section_size (abfd, asec, output_section_size)) | |
2202 | ibfd = abfd, | |
2203 | error_message = _("warning: unable to set size of %s section in %B"); | |
2204 | ||
2205 | fail: | |
2206 | free (buffer); | |
2207 | ||
2208 | if (error_message) | |
2209 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2210 | } | |
252b5132 | 2211 | |
25dbc73a AM |
2212 | /* Prevent the output section from accumulating the input sections' |
2213 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2214 | |
25dbc73a AM |
2215 | static bfd_boolean |
2216 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2217 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2218 | asection *asec, |
2219 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2220 | { | |
2221 | return (apuinfo_list_length () | |
2222 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
252b5132 RH |
2223 | } |
2224 | ||
25dbc73a AM |
2225 | /* Finally we can generate the output section. */ |
2226 | ||
2227 | static void | |
2228 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2229 | { |
25dbc73a AM |
2230 | bfd_byte *buffer; |
2231 | asection *asec; | |
2232 | unsigned i; | |
2233 | unsigned num_entries; | |
2234 | bfd_size_type length; | |
7619e7c7 | 2235 | |
25dbc73a AM |
2236 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2237 | if (asec == NULL) | |
2238 | return; | |
2239 | ||
2240 | if (apuinfo_list_length () == 0) | |
2241 | return; | |
2242 | ||
2243 | length = asec->size; | |
2244 | if (length < 20) | |
2245 | return; | |
2246 | ||
2247 | buffer = bfd_malloc (length); | |
2248 | if (buffer == NULL) | |
7619e7c7 | 2249 | { |
25dbc73a AM |
2250 | (*_bfd_error_handler) |
2251 | (_("failed to allocate space for new APUinfo section.")); | |
2252 | return; | |
7619e7c7 | 2253 | } |
7619e7c7 | 2254 | |
25dbc73a AM |
2255 | /* Create the apuinfo header. */ |
2256 | num_entries = apuinfo_list_length (); | |
2257 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2258 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2259 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2260 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2261 | |
25dbc73a AM |
2262 | length = 20; |
2263 | for (i = 0; i < num_entries; i++) | |
feee612b | 2264 | { |
25dbc73a AM |
2265 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2266 | length += 4; | |
feee612b | 2267 | } |
feee612b | 2268 | |
25dbc73a AM |
2269 | if (length != asec->size) |
2270 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2271 | |
25dbc73a AM |
2272 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2273 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2274 | |
25dbc73a AM |
2275 | free (buffer); |
2276 | ||
2277 | apuinfo_list_finish (); | |
252b5132 | 2278 | } |
25dbc73a AM |
2279 | \f |
2280 | /* The following functions are specific to the ELF linker, while | |
2281 | functions above are used generally. They appear in this file more | |
2282 | or less in the order in which they are called. eg. | |
2283 | ppc_elf_check_relocs is called early in the link process, | |
2284 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2285 | called. */ | |
252b5132 | 2286 | |
25dbc73a AM |
2287 | /* The PPC linker needs to keep track of the number of relocs that it |
2288 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2289 | This is so that it can later discard them if they are found to be | |
2290 | unnecessary. We store the information in a field extending the | |
2291 | regular ELF linker hash table. */ | |
ae9a127f | 2292 | |
25dbc73a | 2293 | struct ppc_elf_dyn_relocs |
252b5132 | 2294 | { |
25dbc73a | 2295 | struct ppc_elf_dyn_relocs *next; |
252b5132 | 2296 | |
25dbc73a AM |
2297 | /* The input section of the reloc. */ |
2298 | asection *sec; | |
252b5132 | 2299 | |
25dbc73a AM |
2300 | /* Total number of relocs copied for the input section. */ |
2301 | bfd_size_type count; | |
252b5132 | 2302 | |
25dbc73a AM |
2303 | /* Number of pc-relative relocs copied for the input section. */ |
2304 | bfd_size_type pc_count; | |
2305 | }; | |
252b5132 | 2306 | |
a6aa5195 AM |
2307 | /* Track PLT entries needed for a given symbol. We might need more |
2308 | than one glink entry per symbol. */ | |
2309 | struct plt_entry | |
2310 | { | |
2311 | struct plt_entry *next; | |
2312 | ||
2313 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2314 | This field stores the offset into .got2 used to initialise the | |
2315 | GOT pointer reg. It will always be at least 32768 (and for | |
2316 | current gcc this is the only offset used). */ | |
2317 | bfd_vma addend; | |
2318 | ||
2319 | /* The .got2 section. */ | |
2320 | asection *sec; | |
2321 | ||
2322 | /* PLT refcount or offset. */ | |
2323 | union | |
2324 | { | |
2325 | bfd_signed_vma refcount; | |
2326 | bfd_vma offset; | |
2327 | } plt; | |
2328 | ||
2329 | /* .glink stub offset. */ | |
2330 | bfd_vma glink_offset; | |
2331 | }; | |
2332 | ||
25dbc73a AM |
2333 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2334 | selects those that must be copied when linking a shared library, | |
2335 | even when the symbol is local. */ | |
252b5132 | 2336 | |
25dbc73a AM |
2337 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
2338 | ((RTYPE) != R_PPC_REL24 \ | |
2339 | && (RTYPE) != R_PPC_REL14 \ | |
2340 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2341 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2342 | && (RTYPE) != R_PPC_REL32) | |
252b5132 | 2343 | |
25dbc73a AM |
2344 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2345 | copying dynamic variables from a shared lib into an app's dynbss | |
2346 | section, and instead use a dynamic relocation to point into the | |
2347 | shared lib. */ | |
2348 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2349 | |
25dbc73a | 2350 | /* PPC ELF linker hash entry. */ |
252b5132 | 2351 | |
25dbc73a AM |
2352 | struct ppc_elf_link_hash_entry |
2353 | { | |
2354 | struct elf_link_hash_entry elf; | |
252b5132 | 2355 | |
25dbc73a AM |
2356 | /* If this symbol is used in the linker created sections, the processor |
2357 | specific backend uses this field to map the field into the offset | |
2358 | from the beginning of the section. */ | |
2359 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2360 | |
25dbc73a AM |
2361 | /* Track dynamic relocs copied for this symbol. */ |
2362 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
252b5132 | 2363 | |
25dbc73a AM |
2364 | /* Contexts in which symbol is used in the GOT (or TOC). |
2365 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
2366 | corresponding relocs are encountered during check_relocs. | |
2367 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2368 | indicate the corresponding GOT entry type is not needed. */ | |
2369 | #define TLS_GD 1 /* GD reloc. */ | |
2370 | #define TLS_LD 2 /* LD reloc. */ | |
2371 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2372 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2373 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2374 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
2375 | char tls_mask; | |
4dc4a9a5 DJ |
2376 | |
2377 | /* Nonzero if we have seen a small data relocation referring to this | |
2378 | symbol. */ | |
2379 | unsigned char has_sda_refs; | |
25dbc73a | 2380 | }; |
252b5132 | 2381 | |
25dbc73a AM |
2382 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2383 | ||
4a3dc543 RS |
2384 | enum ppc_elf_plt_type { |
2385 | PLT_UNSET, | |
2386 | PLT_OLD, | |
2387 | PLT_NEW, | |
2388 | PLT_VXWORKS | |
2389 | }; | |
2390 | ||
25dbc73a AM |
2391 | /* PPC ELF linker hash table. */ |
2392 | ||
2393 | struct ppc_elf_link_hash_table | |
2394 | { | |
2395 | struct elf_link_hash_table elf; | |
2396 | ||
2397 | /* Short-cuts to get to dynamic linker sections. */ | |
2398 | asection *got; | |
2399 | asection *relgot; | |
d7128ce4 | 2400 | asection *glink; |
25dbc73a AM |
2401 | asection *plt; |
2402 | asection *relplt; | |
2403 | asection *dynbss; | |
2404 | asection *relbss; | |
2405 | asection *dynsbss; | |
2406 | asection *relsbss; | |
c9a2f333 | 2407 | elf_linker_section_t sdata[2]; |
25dbc73a AM |
2408 | asection *sbss; |
2409 | ||
2410 | /* Shortcut to .__tls_get_addr. */ | |
2411 | struct elf_link_hash_entry *tls_get_addr; | |
252b5132 | 2412 | |
25dbc73a AM |
2413 | /* TLS local dynamic got entry handling. */ |
2414 | union { | |
2415 | bfd_signed_vma refcount; | |
2416 | bfd_vma offset; | |
2417 | } tlsld_got; | |
252b5132 | 2418 | |
d7128ce4 AM |
2419 | /* Offset of PltResolve function in glink. */ |
2420 | bfd_vma glink_pltresolve; | |
2421 | ||
3b36f7e6 AM |
2422 | /* Size of reserved GOT entries. */ |
2423 | unsigned int got_header_size; | |
2424 | /* Non-zero if allocating the header left a gap. */ | |
2425 | unsigned int got_gap; | |
2426 | ||
4a3dc543 RS |
2427 | /* The type of PLT we have chosen to use. */ |
2428 | enum ppc_elf_plt_type plt_type; | |
2429 | ||
2430 | /* Whether we can use the new PLT layout. */ | |
2431 | unsigned int can_use_new_plt:1; | |
d7128ce4 | 2432 | |
0ba07910 AM |
2433 | /* Set if we should emit symbols for stubs. */ |
2434 | unsigned int emit_stub_syms:1; | |
2435 | ||
25dbc73a AM |
2436 | /* Small local sym to section mapping cache. */ |
2437 | struct sym_sec_cache sym_sec; | |
9d8504b1 PB |
2438 | |
2439 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ | |
2440 | asection *srelplt2; | |
2441 | ||
2442 | /* The .got.plt section (VxWorks only)*/ | |
2443 | asection *sgotplt; | |
2444 | ||
9d8504b1 PB |
2445 | /* True if the target system is VxWorks. */ |
2446 | int is_vxworks; | |
2447 | ||
2448 | /* The size of PLT entries. */ | |
2449 | int plt_entry_size; | |
2450 | /* The distance between adjacent PLT slots. */ | |
2451 | int plt_slot_size; | |
2452 | /* The size of the first PLT entry. */ | |
2453 | int plt_initial_entry_size; | |
25dbc73a | 2454 | }; |
252b5132 | 2455 | |
25dbc73a | 2456 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2457 | |
25dbc73a AM |
2458 | #define ppc_elf_hash_table(p) \ |
2459 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
252b5132 | 2460 | |
25dbc73a | 2461 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2462 | |
25dbc73a AM |
2463 | static struct bfd_hash_entry * |
2464 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2465 | struct bfd_hash_table *table, | |
2466 | const char *string) | |
252b5132 | 2467 | { |
25dbc73a AM |
2468 | /* Allocate the structure if it has not already been allocated by a |
2469 | subclass. */ | |
2470 | if (entry == NULL) | |
2471 | { | |
2472 | entry = bfd_hash_allocate (table, | |
2473 | sizeof (struct ppc_elf_link_hash_entry)); | |
2474 | if (entry == NULL) | |
2475 | return entry; | |
2476 | } | |
252b5132 | 2477 | |
25dbc73a AM |
2478 | /* Call the allocation method of the superclass. */ |
2479 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2480 | if (entry != NULL) | |
2481 | { | |
2482 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2483 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2484 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
2485 | } | |
252b5132 | 2486 | |
25dbc73a | 2487 | return entry; |
252b5132 | 2488 | } |
3dab13f6 | 2489 | |
25dbc73a | 2490 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2491 | |
25dbc73a AM |
2492 | static struct bfd_link_hash_table * |
2493 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2494 | { |
25dbc73a | 2495 | struct ppc_elf_link_hash_table *ret; |
3dab13f6 | 2496 | |
25dbc73a AM |
2497 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2498 | if (ret == NULL) | |
2499 | return NULL; | |
3dab13f6 | 2500 | |
66eb6687 AM |
2501 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2502 | ppc_elf_link_hash_newfunc, | |
2503 | sizeof (struct ppc_elf_link_hash_entry))) | |
3dab13f6 | 2504 | { |
25dbc73a AM |
2505 | free (ret); |
2506 | return NULL; | |
2507 | } | |
58111eb7 | 2508 | |
a6aa5195 AM |
2509 | ret->elf.init_plt_refcount.refcount = 0; |
2510 | ret->elf.init_plt_refcount.glist = NULL; | |
2511 | ret->elf.init_plt_offset.offset = 0; | |
2512 | ret->elf.init_plt_offset.glist = NULL; | |
2513 | ||
c9a2f333 AM |
2514 | ret->sdata[0].name = ".sdata"; |
2515 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2516 | ret->sdata[0].bss_name = ".sbss"; | |
2517 | ||
2518 | ret->sdata[1].name = ".sdata2"; | |
2519 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2520 | ret->sdata[1].bss_name = ".sbss2"; | |
2521 | ||
9d8504b1 PB |
2522 | ret->plt_entry_size = 12; |
2523 | ret->plt_slot_size = 8; | |
2524 | ret->plt_initial_entry_size = 72; | |
2525 | ||
2526 | ret->is_vxworks = 0; | |
2527 | ||
25dbc73a AM |
2528 | return &ret->elf.root; |
2529 | } | |
3dab13f6 | 2530 | |
9d8504b1 | 2531 | /* Create .got and the related sections. */ |
3dab13f6 | 2532 | |
25dbc73a AM |
2533 | static bfd_boolean |
2534 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2535 | { | |
2536 | struct ppc_elf_link_hash_table *htab; | |
2537 | asection *s; | |
2538 | flagword flags; | |
3dab13f6 | 2539 | |
25dbc73a AM |
2540 | if (!_bfd_elf_create_got_section (abfd, info)) |
2541 | return FALSE; | |
3dab13f6 | 2542 | |
25dbc73a AM |
2543 | htab = ppc_elf_hash_table (info); |
2544 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
2545 | if (s == NULL) | |
2546 | abort (); | |
3dab13f6 | 2547 | |
9d8504b1 PB |
2548 | if (htab->is_vxworks) |
2549 | { | |
2550 | htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt"); | |
2551 | if (!htab->sgotplt) | |
2552 | abort (); | |
2553 | } | |
2554 | else | |
2555 | { | |
2556 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2557 | executable. */ | |
2558 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
2559 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2560 | if (!bfd_set_section_flags (abfd, s, flags)) | |
2561 | return FALSE; | |
2562 | } | |
3dab13f6 | 2563 | |
3b36f7e6 AM |
2564 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2565 | | SEC_LINKER_CREATED | SEC_READONLY); | |
2566 | htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags); | |
25dbc73a | 2567 | if (!htab->relgot |
25dbc73a AM |
2568 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) |
2569 | return FALSE; | |
3dab13f6 | 2570 | |
25dbc73a AM |
2571 | return TRUE; |
2572 | } | |
3dab13f6 | 2573 | |
25dbc73a AM |
2574 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2575 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2576 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2577 | |
25dbc73a AM |
2578 | static bfd_boolean |
2579 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2580 | { | |
2581 | struct ppc_elf_link_hash_table *htab; | |
2582 | asection *s; | |
2583 | flagword flags; | |
3dab13f6 | 2584 | |
25dbc73a | 2585 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2586 | |
25dbc73a AM |
2587 | if (htab->got == NULL |
2588 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
2589 | return FALSE; |
2590 | ||
25dbc73a AM |
2591 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2592 | return FALSE; | |
3dab13f6 | 2593 | |
d7128ce4 AM |
2594 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2595 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2596 | ||
2597 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE); | |
2598 | htab->glink = s; | |
2599 | if (s == NULL | |
2600 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2601 | return FALSE; | |
3dab13f6 | 2602 | |
25dbc73a | 2603 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
3b36f7e6 AM |
2604 | s = bfd_make_section_with_flags (abfd, ".dynsbss", |
2605 | SEC_ALLOC | SEC_LINKER_CREATED); | |
2606 | htab->dynsbss = s; | |
3496cb2a | 2607 | if (s == NULL) |
25dbc73a | 2608 | return FALSE; |
3dab13f6 | 2609 | |
25dbc73a AM |
2610 | if (! info->shared) |
2611 | { | |
2612 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
d7128ce4 | 2613 | s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2614 | htab->relsbss = s; |
25dbc73a | 2615 | if (s == NULL |
25dbc73a AM |
2616 | || ! bfd_set_section_alignment (abfd, s, 2)) |
2617 | return FALSE; | |
2618 | } | |
3dab13f6 | 2619 | |
711de32c RS |
2620 | if (htab->is_vxworks |
2621 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
2622 | return FALSE; | |
9d8504b1 | 2623 | |
25dbc73a AM |
2624 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2625 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
2626 | if (s == NULL) | |
2627 | abort (); | |
3dab13f6 | 2628 | |
3b36f7e6 | 2629 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
2630 | if (htab->plt_type == PLT_VXWORKS) |
2631 | /* The VxWorks PLT is a loaded section with contents. */ | |
2632 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
2633 | return bfd_set_section_flags (abfd, s, flags); |
2634 | } | |
3dab13f6 | 2635 | |
25dbc73a | 2636 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2637 | |
25dbc73a | 2638 | static void |
fcfa13d2 | 2639 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2640 | struct elf_link_hash_entry *dir, |
2641 | struct elf_link_hash_entry *ind) | |
2642 | { | |
2643 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2644 | |
25dbc73a AM |
2645 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2646 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2647 | |
25dbc73a AM |
2648 | if (eind->dyn_relocs != NULL) |
2649 | { | |
2650 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2651 | { |
25dbc73a AM |
2652 | struct ppc_elf_dyn_relocs **pp; |
2653 | struct ppc_elf_dyn_relocs *p; | |
3dab13f6 | 2654 | |
fcfa13d2 | 2655 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
2656 | list. Merge any entries against the same section. */ |
2657 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2658 | { |
25dbc73a AM |
2659 | struct ppc_elf_dyn_relocs *q; |
2660 | ||
2661 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2662 | if (q->sec == p->sec) | |
2663 | { | |
2664 | q->pc_count += p->pc_count; | |
2665 | q->count += p->count; | |
2666 | *pp = p->next; | |
2667 | break; | |
2668 | } | |
2669 | if (q == NULL) | |
2670 | pp = &p->next; | |
3dab13f6 | 2671 | } |
25dbc73a | 2672 | *pp = edir->dyn_relocs; |
3dab13f6 | 2673 | } |
25dbc73a AM |
2674 | |
2675 | edir->dyn_relocs = eind->dyn_relocs; | |
2676 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2677 | } |
3dab13f6 | 2678 | |
25dbc73a | 2679 | edir->tls_mask |= eind->tls_mask; |
4dc4a9a5 | 2680 | edir->has_sda_refs |= eind->has_sda_refs; |
3dab13f6 | 2681 | |
a6aa5195 AM |
2682 | /* If called to transfer flags for a weakdef during processing |
2683 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
2684 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
2685 | if (!(ELIMINATE_COPY_RELOCS | |
2686 | && eind->elf.root.type != bfd_link_hash_indirect | |
2687 | && edir->elf.dynamic_adjusted)) | |
2688 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
2689 | ||
2690 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
2691 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
2692 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
2693 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
2694 | ||
2695 | /* If we were called to copy over info for a weak sym, that's all. */ | |
2696 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
2697 | return; | |
2698 | ||
2699 | /* Copy over the GOT refcount entries that we may have already seen to | |
2700 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
2701 | edir->elf.got.refcount += eind->elf.got.refcount; |
2702 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
2703 | |
2704 | /* And plt entries. */ | |
2705 | if (eind->elf.plt.plist != NULL) | |
2706 | { | |
2707 | if (edir->elf.plt.plist != NULL) | |
2708 | { | |
2709 | struct plt_entry **entp; | |
2710 | struct plt_entry *ent; | |
2711 | ||
2712 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
2713 | { | |
2714 | struct plt_entry *dent; | |
2715 | ||
2716 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
2717 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
2718 | { | |
2719 | dent->plt.refcount += ent->plt.refcount; | |
2720 | *entp = ent->next; | |
2721 | break; | |
2722 | } | |
2723 | if (dent == NULL) | |
2724 | entp = &ent->next; | |
2725 | } | |
2726 | *entp = edir->elf.plt.plist; | |
2727 | } | |
2728 | ||
2729 | edir->elf.plt.plist = eind->elf.plt.plist; | |
2730 | eind->elf.plt.plist = NULL; | |
2731 | } | |
2732 | ||
fcfa13d2 | 2733 | if (eind->elf.dynindx != -1) |
25dbc73a | 2734 | { |
fcfa13d2 AM |
2735 | if (edir->elf.dynindx != -1) |
2736 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
2737 | edir->elf.dynstr_index); | |
a6aa5195 AM |
2738 | edir->elf.dynindx = eind->elf.dynindx; |
2739 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
2740 | eind->elf.dynindx = -1; | |
2741 | eind->elf.dynstr_index = 0; | |
25dbc73a | 2742 | } |
25dbc73a | 2743 | } |
3dab13f6 | 2744 | |
8853c3d3 AM |
2745 | /* Return 1 if target is one of ours. */ |
2746 | ||
2747 | static bfd_boolean | |
2748 | is_ppc_elf_target (const struct bfd_target *targ) | |
2749 | { | |
2750 | extern const bfd_target bfd_elf32_powerpc_vec; | |
7c492719 | 2751 | extern const bfd_target bfd_elf32_powerpc_vxworks_vec; |
8853c3d3 AM |
2752 | extern const bfd_target bfd_elf32_powerpcle_vec; |
2753 | ||
7c492719 RS |
2754 | return (targ == &bfd_elf32_powerpc_vec |
2755 | || targ == &bfd_elf32_powerpc_vxworks_vec | |
2756 | || targ == &bfd_elf32_powerpcle_vec); | |
8853c3d3 AM |
2757 | } |
2758 | ||
25dbc73a AM |
2759 | /* Hook called by the linker routine which adds symbols from an object |
2760 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2761 | |
25dbc73a AM |
2762 | static bfd_boolean |
2763 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2764 | struct bfd_link_info *info, | |
2765 | Elf_Internal_Sym *sym, | |
2766 | const char **namep ATTRIBUTE_UNUSED, | |
2767 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2768 | asection **secp, | |
2769 | bfd_vma *valp) | |
2770 | { | |
2771 | if (sym->st_shndx == SHN_COMMON | |
2772 | && !info->relocatable | |
2773 | && sym->st_size <= elf_gp_size (abfd) | |
d2663f46 | 2774 | && is_ppc_elf_target (info->hash->creator)) |
25dbc73a AM |
2775 | { |
2776 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2777 | put into .sbss. */ | |
2778 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2779 | |
25dbc73a AM |
2780 | htab = ppc_elf_hash_table (info); |
2781 | if (htab->sbss == NULL) | |
2782 | { | |
644285ef | 2783 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2784 | |
644285ef AM |
2785 | if (!htab->elf.dynobj) |
2786 | htab->elf.dynobj = abfd; | |
2787 | ||
3496cb2a L |
2788 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2789 | ".sbss", | |
2790 | flags); | |
2791 | if (htab->sbss == NULL) | |
25dbc73a | 2792 | return FALSE; |
3dab13f6 | 2793 | } |
3dab13f6 | 2794 | |
25dbc73a AM |
2795 | *secp = htab->sbss; |
2796 | *valp = sym->st_size; | |
2797 | } | |
3dab13f6 | 2798 | |
25dbc73a | 2799 | return TRUE; |
3dab13f6 AM |
2800 | } |
2801 | \f | |
046183de AM |
2802 | static bfd_boolean |
2803 | create_sdata_sym (struct ppc_elf_link_hash_table *htab, | |
2804 | elf_linker_section_t *lsect) | |
2805 | { | |
2806 | lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name, | |
2807 | TRUE, FALSE, TRUE); | |
2808 | if (lsect->sym == NULL) | |
2809 | return FALSE; | |
2810 | if (lsect->sym->root.type == bfd_link_hash_new) | |
2811 | lsect->sym->non_elf = 0; | |
2812 | lsect->sym->ref_regular = 1; | |
2813 | return TRUE; | |
2814 | } | |
2815 | ||
c9a2f333 | 2816 | /* Create a special linker section. */ |
25dbc73a | 2817 | |
c9a2f333 | 2818 | static bfd_boolean |
55fd94b0 AM |
2819 | ppc_elf_create_linker_section (bfd *abfd, |
2820 | struct bfd_link_info *info, | |
c9a2f333 AM |
2821 | flagword flags, |
2822 | elf_linker_section_t *lsect) | |
252b5132 | 2823 | { |
58111eb7 | 2824 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
c9a2f333 | 2825 | asection *s; |
58111eb7 | 2826 | |
c9a2f333 AM |
2827 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2828 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
2829 | |
2830 | /* Record the first bfd that needs the special sections. */ | |
2831 | if (!htab->elf.dynobj) | |
2832 | htab->elf.dynobj = abfd; | |
2833 | ||
3496cb2a L |
2834 | s = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2835 | lsect->name, | |
2836 | flags); | |
76750a2f | 2837 | if (s == NULL |
76750a2f | 2838 | || !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) |
c9a2f333 | 2839 | return FALSE; |
76750a2f | 2840 | lsect->section = s; |
58111eb7 | 2841 | |
046183de | 2842 | return create_sdata_sym (htab, lsect); |
252b5132 | 2843 | } |
252b5132 | 2844 | |
25dbc73a AM |
2845 | /* Find a linker generated pointer with a given addend and type. */ |
2846 | ||
2847 | static elf_linker_section_pointers_t * | |
2848 | elf_find_pointer_linker_section | |
2849 | (elf_linker_section_pointers_t *linker_pointers, | |
2850 | bfd_vma addend, | |
2851 | elf_linker_section_t *lsect) | |
252b5132 | 2852 | { |
25dbc73a AM |
2853 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2854 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2855 | return linker_pointers; | |
252b5132 | 2856 | |
25dbc73a AM |
2857 | return NULL; |
2858 | } | |
2859 | ||
2860 | /* Allocate a pointer to live in a linker created section. */ | |
2861 | ||
2862 | static bfd_boolean | |
2863 | elf_create_pointer_linker_section (bfd *abfd, | |
25dbc73a AM |
2864 | elf_linker_section_t *lsect, |
2865 | struct elf_link_hash_entry *h, | |
2866 | const Elf_Internal_Rela *rel) | |
2867 | { | |
2868 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2869 | elf_linker_section_pointers_t *linker_section_ptr; | |
2870 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2871 | bfd_size_type amt; | |
2872 | ||
2873 | BFD_ASSERT (lsect != NULL); | |
2874 | ||
2875 | /* Is this a global symbol? */ | |
2876 | if (h != NULL) | |
2877 | { | |
2878 | struct ppc_elf_link_hash_entry *eh; | |
2879 | ||
2880 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2881 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2882 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2883 | rel->r_addend, | |
2884 | lsect)) | |
2885 | return TRUE; | |
2886 | ||
2887 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2888 | } |
2889 | else | |
2890 | { | |
2891 | /* Allocation of a pointer to a local symbol. */ | |
2892 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2893 | ||
2894 | /* Allocate a table to hold the local symbols if first time. */ | |
2895 | if (!ptr) | |
2896 | { | |
2897 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
2898 | ||
2899 | amt = num_symbols; | |
2900 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2901 | ptr = bfd_zalloc (abfd, amt); | |
2902 | ||
2903 | if (!ptr) | |
2904 | return FALSE; | |
2905 | ||
2906 | elf_local_ptr_offsets (abfd) = ptr; | |
2907 | } | |
2908 | ||
2909 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2910 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2911 | rel->r_addend, | |
2912 | lsect)) | |
2913 | return TRUE; | |
252b5132 | 2914 | |
25dbc73a | 2915 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2916 | } |
41fcb14e | 2917 | |
25dbc73a AM |
2918 | /* Allocate space for a pointer in the linker section, and allocate |
2919 | a new pointer record from internal memory. */ | |
2920 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2921 | amt = sizeof (elf_linker_section_pointers_t); | |
2922 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2923 | |
25dbc73a | 2924 | if (!linker_section_ptr) |
7619e7c7 | 2925 | return FALSE; |
41fcb14e | 2926 | |
25dbc73a AM |
2927 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2928 | linker_section_ptr->addend = rel->r_addend; | |
2929 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2930 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2931 | |
25dbc73a AM |
2932 | linker_section_ptr->offset = lsect->section->size; |
2933 | lsect->section->size += 4; | |
7619e7c7 | 2934 | |
25dbc73a AM |
2935 | #ifdef DEBUG |
2936 | fprintf (stderr, | |
2937 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2938 | lsect->name, (long) linker_section_ptr->offset, | |
2939 | (long) lsect->section->size); | |
2940 | #endif | |
7619e7c7 AM |
2941 | |
2942 | return TRUE; | |
41fcb14e AM |
2943 | } |
2944 | ||
b34976b6 | 2945 | static bfd_boolean |
25dbc73a AM |
2946 | update_local_sym_info (bfd *abfd, |
2947 | Elf_Internal_Shdr *symtab_hdr, | |
2948 | unsigned long r_symndx, | |
2949 | int tls_type) | |
252b5132 | 2950 | { |
25dbc73a AM |
2951 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
2952 | char *local_got_tls_masks; | |
252b5132 | 2953 | |
25dbc73a | 2954 | if (local_got_refcounts == NULL) |
252b5132 | 2955 | { |
25dbc73a AM |
2956 | bfd_size_type size = symtab_hdr->sh_info; |
2957 | ||
2958 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
2959 | local_got_refcounts = bfd_zalloc (abfd, size); | |
2960 | if (local_got_refcounts == NULL) | |
b34976b6 | 2961 | return FALSE; |
25dbc73a | 2962 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2963 | } |
41fcb14e | 2964 | |
25dbc73a AM |
2965 | local_got_refcounts[r_symndx] += 1; |
2966 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
2967 | local_got_tls_masks[r_symndx] |= tls_type; | |
2968 | return TRUE; | |
2969 | } | |
41fcb14e | 2970 | |
a6aa5195 AM |
2971 | static bfd_boolean |
2972 | update_plt_info (bfd *abfd, struct elf_link_hash_entry *h, | |
2973 | asection *sec, bfd_vma addend) | |
2974 | { | |
2975 | struct plt_entry *ent; | |
2976 | ||
2977 | if (addend < 32768) | |
2978 | sec = NULL; | |
2979 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
2980 | if (ent->sec == sec && ent->addend == addend) | |
2981 | break; | |
2982 | if (ent == NULL) | |
2983 | { | |
2984 | bfd_size_type amt = sizeof (*ent); | |
2985 | ent = bfd_alloc (abfd, amt); | |
2986 | if (ent == NULL) | |
2987 | return FALSE; | |
2988 | ent->next = h->plt.plist; | |
2989 | ent->sec = sec; | |
2990 | ent->addend = addend; | |
2991 | ent->plt.refcount = 0; | |
2992 | h->plt.plist = ent; | |
2993 | } | |
2994 | ent->plt.refcount += 1; | |
2995 | return TRUE; | |
2996 | } | |
2997 | ||
2998 | static struct plt_entry * | |
2999 | find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend) | |
3000 | { | |
3001 | struct plt_entry *ent; | |
3002 | ||
3003 | if (addend < 32768) | |
3004 | sec = NULL; | |
3005 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
3006 | if (ent->sec == sec && ent->addend == addend) | |
3007 | break; | |
3008 | return ent; | |
3009 | } | |
3010 | ||
25dbc73a AM |
3011 | static void |
3012 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3013 | { | |
3014 | (*_bfd_error_handler) | |
3015 | (_("%B: relocation %s cannot be used when making a shared object"), | |
3016 | abfd, | |
3017 | ppc_elf_howto_table[r_type]->name); | |
3018 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3019 | } |
3020 | ||
25dbc73a AM |
3021 | /* Look through the relocs for a section during the first phase, and |
3022 | allocate space in the global offset table or procedure linkage | |
3023 | table. */ | |
252b5132 | 3024 | |
b34976b6 | 3025 | static bfd_boolean |
25dbc73a AM |
3026 | ppc_elf_check_relocs (bfd *abfd, |
3027 | struct bfd_link_info *info, | |
3028 | asection *sec, | |
3029 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3030 | { |
7619e7c7 | 3031 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3032 | Elf_Internal_Shdr *symtab_hdr; |
3033 | struct elf_link_hash_entry **sym_hashes; | |
3034 | const Elf_Internal_Rela *rel; | |
3035 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3036 | asection *got2, *sreloc; |
25dbc73a AM |
3037 | |
3038 | if (info->relocatable) | |
3039 | return TRUE; | |
252b5132 | 3040 | |
c87b5a93 AM |
3041 | /* Don't do anything special with non-loaded, non-alloced sections. |
3042 | In particular, any relocs in such sections should not affect GOT | |
3043 | and PLT reference counting (ie. we don't allow them to create GOT | |
3044 | or PLT entries), there's no possibility or desire to optimize TLS | |
3045 | relocs, and there's not much point in propagating relocs to shared | |
3046 | libs that the dynamic linker won't relocate. */ | |
3047 | if ((sec->flags & SEC_ALLOC) == 0) | |
3048 | return TRUE; | |
3049 | ||
252b5132 | 3050 | #ifdef DEBUG |
25dbc73a AM |
3051 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3052 | sec, abfd); | |
252b5132 RH |
3053 | #endif |
3054 | ||
25dbc73a AM |
3055 | /* Initialize howto table if not already done. */ |
3056 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3057 | ppc_elf_howto_init (); | |
3058 | ||
7619e7c7 | 3059 | htab = ppc_elf_hash_table (info); |
25dbc73a AM |
3060 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3061 | sym_hashes = elf_sym_hashes (abfd); | |
a6aa5195 | 3062 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3063 | sreloc = NULL; |
3064 | ||
3065 | rel_end = relocs + sec->reloc_count; | |
3066 | for (rel = relocs; rel < rel_end; rel++) | |
3067 | { | |
3068 | unsigned long r_symndx; | |
3069 | enum elf_ppc_reloc_type r_type; | |
3070 | struct elf_link_hash_entry *h; | |
3071 | int tls_type = 0; | |
3072 | ||
3073 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3074 | if (r_symndx < symtab_hdr->sh_info) | |
3075 | h = NULL; | |
3076 | else | |
973a3492 L |
3077 | { |
3078 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3079 | while (h->root.type == bfd_link_hash_indirect | |
3080 | || h->root.type == bfd_link_hash_warning) | |
3081 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3082 | } | |
25dbc73a AM |
3083 | |
3084 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3085 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3086 | startup code. */ | |
3b36f7e6 AM |
3087 | if (h != NULL |
3088 | && htab->got == NULL | |
3089 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3090 | { |
3b36f7e6 AM |
3091 | if (htab->elf.dynobj == NULL) |
3092 | htab->elf.dynobj = abfd; | |
3093 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3094 | return FALSE; | |
3095 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3096 | } |
252b5132 | 3097 | |
25dbc73a AM |
3098 | r_type = ELF32_R_TYPE (rel->r_info); |
3099 | switch (r_type) | |
3100 | { | |
3101 | case R_PPC_GOT_TLSLD16: | |
3102 | case R_PPC_GOT_TLSLD16_LO: | |
3103 | case R_PPC_GOT_TLSLD16_HI: | |
3104 | case R_PPC_GOT_TLSLD16_HA: | |
3105 | htab->tlsld_got.refcount += 1; | |
3106 | tls_type = TLS_TLS | TLS_LD; | |
3107 | goto dogottls; | |
252b5132 | 3108 | |
25dbc73a AM |
3109 | case R_PPC_GOT_TLSGD16: |
3110 | case R_PPC_GOT_TLSGD16_LO: | |
3111 | case R_PPC_GOT_TLSGD16_HI: | |
3112 | case R_PPC_GOT_TLSGD16_HA: | |
3113 | tls_type = TLS_TLS | TLS_GD; | |
3114 | goto dogottls; | |
3115 | ||
3116 | case R_PPC_GOT_TPREL16: | |
3117 | case R_PPC_GOT_TPREL16_LO: | |
3118 | case R_PPC_GOT_TPREL16_HI: | |
3119 | case R_PPC_GOT_TPREL16_HA: | |
3120 | if (info->shared) | |
3121 | info->flags |= DF_STATIC_TLS; | |
3122 | tls_type = TLS_TLS | TLS_TPREL; | |
3123 | goto dogottls; | |
3124 | ||
3125 | case R_PPC_GOT_DTPREL16: | |
3126 | case R_PPC_GOT_DTPREL16_LO: | |
3127 | case R_PPC_GOT_DTPREL16_HI: | |
3128 | case R_PPC_GOT_DTPREL16_HA: | |
3129 | tls_type = TLS_TLS | TLS_DTPREL; | |
3130 | dogottls: | |
3131 | sec->has_tls_reloc = 1; | |
3132 | /* Fall thru */ | |
252b5132 | 3133 | |
25dbc73a AM |
3134 | /* GOT16 relocations */ |
3135 | case R_PPC_GOT16: | |
3136 | case R_PPC_GOT16_LO: | |
3137 | case R_PPC_GOT16_HI: | |
3138 | case R_PPC_GOT16_HA: | |
3139 | /* This symbol requires a global offset table entry. */ | |
3140 | if (htab->got == NULL) | |
3141 | { | |
3142 | if (htab->elf.dynobj == NULL) | |
3143 | htab->elf.dynobj = abfd; | |
3144 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3145 | return FALSE; | |
3146 | } | |
3147 | if (h != NULL) | |
3148 | { | |
3149 | h->got.refcount += 1; | |
3150 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3151 | } | |
3152 | else | |
3153 | /* This is a global offset table entry for a local symbol. */ | |
3154 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3155 | return FALSE; | |
3156 | break; | |
252b5132 | 3157 | |
25dbc73a AM |
3158 | /* Indirect .sdata relocation. */ |
3159 | case R_PPC_EMB_SDAI16: | |
3160 | if (info->shared) | |
3161 | { | |
3162 | bad_shared_reloc (abfd, r_type); | |
3163 | return FALSE; | |
3164 | } | |
c9a2f333 AM |
3165 | if (htab->sdata[0].section == NULL |
3166 | && !ppc_elf_create_linker_section (abfd, info, 0, | |
3167 | &htab->sdata[0])) | |
3168 | return FALSE; | |
76750a2f AM |
3169 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0], |
3170 | h, rel)) | |
25dbc73a | 3171 | return FALSE; |
046183de AM |
3172 | if (h != NULL) |
3173 | { | |
3174 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3175 | h->non_got_ref = TRUE; | |
3176 | } | |
25dbc73a | 3177 | break; |
252b5132 | 3178 | |
25dbc73a AM |
3179 | /* Indirect .sdata2 relocation. */ |
3180 | case R_PPC_EMB_SDA2I16: | |
3181 | if (info->shared) | |
3182 | { | |
3183 | bad_shared_reloc (abfd, r_type); | |
3184 | return FALSE; | |
3185 | } | |
c9a2f333 AM |
3186 | if (htab->sdata[1].section == NULL |
3187 | && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3188 | &htab->sdata[1])) | |
3189 | return FALSE; | |
76750a2f AM |
3190 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1], |
3191 | h, rel)) | |
25dbc73a | 3192 | return FALSE; |
046183de AM |
3193 | if (h != NULL) |
3194 | { | |
3195 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3196 | h->non_got_ref = TRUE; | |
3197 | } | |
25dbc73a | 3198 | break; |
252b5132 | 3199 | |
25dbc73a | 3200 | case R_PPC_SDAREL16: |
046183de AM |
3201 | if (info->shared) |
3202 | { | |
3203 | bad_shared_reloc (abfd, r_type); | |
3204 | return FALSE; | |
3205 | } | |
3206 | if (htab->sdata[0].sym == NULL | |
3207 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3208 | return FALSE; | |
3209 | if (h != NULL) | |
3210 | { | |
3211 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3212 | h->non_got_ref = TRUE; | |
3213 | } | |
3214 | break; | |
3215 | ||
25dbc73a | 3216 | case R_PPC_EMB_SDA2REL: |
046183de AM |
3217 | if (info->shared) |
3218 | { | |
3219 | bad_shared_reloc (abfd, r_type); | |
3220 | return FALSE; | |
3221 | } | |
3222 | if (htab->sdata[1].sym == NULL | |
3223 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3224 | return FALSE; | |
3225 | if (h != NULL) | |
3226 | { | |
3227 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3228 | h->non_got_ref = TRUE; | |
3229 | } | |
3230 | break; | |
3231 | ||
25dbc73a AM |
3232 | case R_PPC_EMB_SDA21: |
3233 | case R_PPC_EMB_RELSDA: | |
046183de AM |
3234 | if (info->shared) |
3235 | { | |
3236 | bad_shared_reloc (abfd, r_type); | |
3237 | return FALSE; | |
3238 | } | |
3239 | if (htab->sdata[0].sym == NULL | |
3240 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3241 | return FALSE; | |
3242 | if (htab->sdata[1].sym == NULL | |
3243 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3244 | return FALSE; | |
3245 | if (h != NULL) | |
3246 | { | |
3247 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3248 | h->non_got_ref = TRUE; | |
3249 | } | |
3250 | break; | |
3251 | ||
25dbc73a AM |
3252 | case R_PPC_EMB_NADDR32: |
3253 | case R_PPC_EMB_NADDR16: | |
3254 | case R_PPC_EMB_NADDR16_LO: | |
3255 | case R_PPC_EMB_NADDR16_HI: | |
3256 | case R_PPC_EMB_NADDR16_HA: | |
3257 | if (info->shared) | |
3258 | { | |
3259 | bad_shared_reloc (abfd, r_type); | |
3260 | return FALSE; | |
3261 | } | |
4dc4a9a5 | 3262 | if (h != NULL) |
046183de | 3263 | h->non_got_ref = TRUE; |
25dbc73a | 3264 | break; |
252b5132 | 3265 | |
25dbc73a AM |
3266 | case R_PPC_PLT32: |
3267 | case R_PPC_PLTREL24: | |
3268 | case R_PPC_PLTREL32: | |
3269 | case R_PPC_PLT16_LO: | |
3270 | case R_PPC_PLT16_HI: | |
3271 | case R_PPC_PLT16_HA: | |
3272 | #ifdef DEBUG | |
3273 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3274 | #endif | |
3275 | /* This symbol requires a procedure linkage table entry. We | |
3276 | actually build the entry in finish_dynamic_symbol, | |
3277 | because this might be a case of linking PIC code without | |
3278 | linking in any dynamic objects, in which case we don't | |
3279 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 3280 | |
25dbc73a AM |
3281 | if (h == NULL) |
3282 | { | |
3283 | /* It does not make sense to have a procedure linkage | |
3284 | table entry for a local symbol. */ | |
3285 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " | |
3286 | "local symbol"), | |
3287 | abfd, | |
3288 | sec, | |
3289 | (long) rel->r_offset, | |
3290 | ppc_elf_howto_table[r_type]->name); | |
3291 | bfd_set_error (bfd_error_bad_value); | |
3292 | return FALSE; | |
3293 | } | |
a6aa5195 AM |
3294 | else |
3295 | { | |
3296 | bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0; | |
ee05f2fe | 3297 | |
a6aa5195 AM |
3298 | h->needs_plt = 1; |
3299 | if (!update_plt_info (abfd, h, got2, addend)) | |
3300 | return FALSE; | |
3301 | } | |
25dbc73a | 3302 | break; |
ee05f2fe | 3303 | |
25dbc73a AM |
3304 | /* The following relocations don't need to propagate the |
3305 | relocation if linking a shared object since they are | |
3306 | section relative. */ | |
3307 | case R_PPC_SECTOFF: | |
3308 | case R_PPC_SECTOFF_LO: | |
3309 | case R_PPC_SECTOFF_HI: | |
3310 | case R_PPC_SECTOFF_HA: | |
3311 | case R_PPC_DTPREL16: | |
3312 | case R_PPC_DTPREL16_LO: | |
3313 | case R_PPC_DTPREL16_HI: | |
3314 | case R_PPC_DTPREL16_HA: | |
3315 | case R_PPC_TOC16: | |
3316 | break; | |
252b5132 | 3317 | |
d7128ce4 AM |
3318 | case R_PPC_REL16: |
3319 | case R_PPC_REL16_LO: | |
3320 | case R_PPC_REL16_HI: | |
3321 | case R_PPC_REL16_HA: | |
4a3dc543 | 3322 | htab->can_use_new_plt = 1; |
d7128ce4 AM |
3323 | break; |
3324 | ||
a6aa5195 | 3325 | /* These are just markers. */ |
25dbc73a AM |
3326 | case R_PPC_TLS: |
3327 | case R_PPC_EMB_MRKREF: | |
3328 | case R_PPC_NONE: | |
3329 | case R_PPC_max: | |
3330 | break; | |
252b5132 | 3331 | |
25dbc73a AM |
3332 | /* These should only appear in dynamic objects. */ |
3333 | case R_PPC_COPY: | |
3334 | case R_PPC_GLOB_DAT: | |
3335 | case R_PPC_JMP_SLOT: | |
3336 | case R_PPC_RELATIVE: | |
3337 | break; | |
252b5132 | 3338 | |
25dbc73a AM |
3339 | /* These aren't handled yet. We'll report an error later. */ |
3340 | case R_PPC_ADDR30: | |
3341 | case R_PPC_EMB_RELSEC16: | |
3342 | case R_PPC_EMB_RELST_LO: | |
3343 | case R_PPC_EMB_RELST_HI: | |
3344 | case R_PPC_EMB_RELST_HA: | |
3345 | case R_PPC_EMB_BIT_FLD: | |
3346 | break; | |
252b5132 | 3347 | |
25dbc73a AM |
3348 | /* This refers only to functions defined in the shared library. */ |
3349 | case R_PPC_LOCAL24PC: | |
4a3dc543 RS |
3350 | if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
3351 | htab->plt_type = PLT_OLD; | |
25dbc73a | 3352 | break; |
252b5132 | 3353 | |
25dbc73a AM |
3354 | /* This relocation describes the C++ object vtable hierarchy. |
3355 | Reconstruct it for later use during GC. */ | |
3356 | case R_PPC_GNU_VTINHERIT: | |
3357 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3358 | return FALSE; | |
3359 | break; | |
252b5132 | 3360 | |
25dbc73a AM |
3361 | /* This relocation describes which C++ vtable entries are actually |
3362 | used. Record for later use during GC. */ | |
3363 | case R_PPC_GNU_VTENTRY: | |
3364 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
3365 | return FALSE; | |
3366 | break; | |
252b5132 | 3367 | |
25dbc73a AM |
3368 | /* We shouldn't really be seeing these. */ |
3369 | case R_PPC_TPREL32: | |
3370 | if (info->shared) | |
3371 | info->flags |= DF_STATIC_TLS; | |
3372 | goto dodyn; | |
252b5132 | 3373 | |
25dbc73a AM |
3374 | /* Nor these. */ |
3375 | case R_PPC_DTPMOD32: | |
3376 | case R_PPC_DTPREL32: | |
3377 | goto dodyn; | |
252b5132 | 3378 | |
25dbc73a AM |
3379 | case R_PPC_TPREL16: |
3380 | case R_PPC_TPREL16_LO: | |
3381 | case R_PPC_TPREL16_HI: | |
3382 | case R_PPC_TPREL16_HA: | |
3383 | if (info->shared) | |
3384 | info->flags |= DF_STATIC_TLS; | |
3385 | goto dodyn; | |
ee05f2fe | 3386 | |
9edfd1af AM |
3387 | case R_PPC_REL32: |
3388 | if (h == NULL | |
3389 | && got2 != NULL | |
3390 | && (sec->flags & SEC_CODE) != 0 | |
3391 | && (info->shared || info->pie) | |
4a3dc543 | 3392 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
3393 | { |
3394 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3395 | the start of a function, which assembles to a REL32 | |
3396 | reference to .got2. If we detect one of these, then | |
3397 | force the old PLT layout because the linker cannot | |
3398 | reliably deduce the GOT pointer value needed for | |
3399 | PLT call stubs. */ | |
3400 | asection *s; | |
3401 | ||
3402 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
3403 | r_symndx); | |
3404 | if (s == got2) | |
4a3dc543 | 3405 | htab->plt_type = PLT_OLD; |
9edfd1af | 3406 | } |
7123df0e | 3407 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 3408 | break; |
7123df0e | 3409 | goto dodyn1; |
9edfd1af | 3410 | |
25dbc73a AM |
3411 | case R_PPC_REL24: |
3412 | case R_PPC_REL14: | |
3413 | case R_PPC_REL14_BRTAKEN: | |
3414 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3415 | if (h == NULL) |
25dbc73a | 3416 | break; |
7123df0e | 3417 | if (h == htab->elf.hgot) |
d7128ce4 | 3418 | { |
7123df0e AM |
3419 | if (htab->plt_type == PLT_UNSET) |
3420 | htab->plt_type = PLT_OLD; | |
d7128ce4 AM |
3421 | break; |
3422 | } | |
25dbc73a | 3423 | /* fall through */ |
ee05f2fe | 3424 | |
25dbc73a AM |
3425 | case R_PPC_ADDR32: |
3426 | case R_PPC_ADDR24: | |
3427 | case R_PPC_ADDR16: | |
3428 | case R_PPC_ADDR16_LO: | |
3429 | case R_PPC_ADDR16_HI: | |
3430 | case R_PPC_ADDR16_HA: | |
3431 | case R_PPC_ADDR14: | |
3432 | case R_PPC_ADDR14_BRTAKEN: | |
3433 | case R_PPC_ADDR14_BRNTAKEN: | |
3434 | case R_PPC_UADDR32: | |
3435 | case R_PPC_UADDR16: | |
7123df0e | 3436 | dodyn1: |
25dbc73a AM |
3437 | if (h != NULL && !info->shared) |
3438 | { | |
3439 | /* We may need a plt entry if the symbol turns out to be | |
3440 | a function defined in a dynamic object. */ | |
a6aa5195 AM |
3441 | if (!update_plt_info (abfd, h, NULL, 0)) |
3442 | return FALSE; | |
7fce784e | 3443 | |
25dbc73a AM |
3444 | /* We may need a copy reloc too. */ |
3445 | h->non_got_ref = 1; | |
3446 | } | |
7619e7c7 | 3447 | |
25dbc73a AM |
3448 | dodyn: |
3449 | /* If we are creating a shared library, and this is a reloc | |
3450 | against a global symbol, or a non PC relative reloc | |
3451 | against a local symbol, then we need to copy the reloc | |
3452 | into the shared library. However, if we are linking with | |
3453 | -Bsymbolic, we do not need to copy a reloc against a | |
3454 | global symbol which is defined in an object we are | |
3455 | including in the link (i.e., DEF_REGULAR is set). At | |
3456 | this point we have not seen all the input files, so it is | |
3457 | possible that DEF_REGULAR is not set now but will be set | |
3458 | later (it is never cleared). In case of a weak definition, | |
3459 | DEF_REGULAR may be cleared later by a strong definition in | |
3460 | a shared library. We account for that possibility below by | |
3461 | storing information in the dyn_relocs field of the hash | |
3462 | table entry. A similar situation occurs when creating | |
3463 | shared libraries and symbol visibility changes render the | |
3464 | symbol local. | |
7619e7c7 | 3465 | |
25dbc73a AM |
3466 | If on the other hand, we are creating an executable, we |
3467 | may need to keep relocations for symbols satisfied by a | |
3468 | dynamic library if we manage to avoid copy relocs for the | |
3469 | symbol. */ | |
3470 | if ((info->shared | |
3471 | && (MUST_BE_DYN_RELOC (r_type) | |
3472 | || (h != NULL | |
3473 | && (! info->symbolic | |
3474 | || h->root.type == bfd_link_hash_defweak | |
3475 | || !h->def_regular)))) | |
3476 | || (ELIMINATE_COPY_RELOCS | |
3477 | && !info->shared | |
25dbc73a AM |
3478 | && h != NULL |
3479 | && (h->root.type == bfd_link_hash_defweak | |
3480 | || !h->def_regular))) | |
3481 | { | |
3482 | struct ppc_elf_dyn_relocs *p; | |
3483 | struct ppc_elf_dyn_relocs **head; | |
7619e7c7 | 3484 | |
25dbc73a AM |
3485 | #ifdef DEBUG |
3486 | fprintf (stderr, | |
3487 | "ppc_elf_check_relocs needs to " | |
3488 | "create relocation for %s\n", | |
3489 | (h && h->root.root.string | |
3490 | ? h->root.root.string : "<unknown>")); | |
3491 | #endif | |
3492 | if (sreloc == NULL) | |
3493 | { | |
3494 | const char *name; | |
7619e7c7 | 3495 | |
25dbc73a AM |
3496 | name = (bfd_elf_string_from_elf_section |
3497 | (abfd, | |
3498 | elf_elfheader (abfd)->e_shstrndx, | |
3499 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3500 | if (name == NULL) | |
3501 | return FALSE; | |
7619e7c7 | 3502 | |
0112cd26 | 3503 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
25dbc73a AM |
3504 | && strcmp (bfd_get_section_name (abfd, sec), |
3505 | name + 5) == 0); | |
7619e7c7 | 3506 | |
c9a2f333 AM |
3507 | if (htab->elf.dynobj == NULL) |
3508 | htab->elf.dynobj = abfd; | |
25dbc73a AM |
3509 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
3510 | if (sreloc == NULL) | |
3511 | { | |
3512 | flagword flags; | |
7619e7c7 | 3513 | |
25dbc73a | 3514 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
c87b5a93 AM |
3515 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
3516 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
3517 | sreloc = bfd_make_section_with_flags (htab->elf.dynobj, |
3518 | name, | |
3519 | flags); | |
25dbc73a | 3520 | if (sreloc == NULL |
25dbc73a AM |
3521 | || ! bfd_set_section_alignment (htab->elf.dynobj, |
3522 | sreloc, 2)) | |
3523 | return FALSE; | |
3524 | } | |
3525 | elf_section_data (sec)->sreloc = sreloc; | |
3526 | } | |
7619e7c7 | 3527 | |
25dbc73a AM |
3528 | /* If this is a global symbol, we count the number of |
3529 | relocations we need for this symbol. */ | |
3530 | if (h != NULL) | |
3531 | { | |
3532 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
3533 | } | |
3534 | else | |
3535 | { | |
3536 | /* Track dynamic relocs needed for local syms too. | |
3537 | We really need local syms available to do this | |
3538 | easily. Oh well. */ | |
7619e7c7 | 3539 | |
25dbc73a | 3540 | asection *s; |
6edfbbad DJ |
3541 | void *vpp; |
3542 | ||
25dbc73a AM |
3543 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
3544 | sec, r_symndx); | |
3545 | if (s == NULL) | |
3546 | return FALSE; | |
7fce784e | 3547 | |
6edfbbad DJ |
3548 | vpp = &elf_section_data (s)->local_dynrel; |
3549 | head = (struct ppc_elf_dyn_relocs **) vpp; | |
25dbc73a | 3550 | } |
7fce784e | 3551 | |
25dbc73a AM |
3552 | p = *head; |
3553 | if (p == NULL || p->sec != sec) | |
3554 | { | |
3555 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3556 | if (p == NULL) | |
3557 | return FALSE; | |
3558 | p->next = *head; | |
3559 | *head = p; | |
3560 | p->sec = sec; | |
3561 | p->count = 0; | |
3562 | p->pc_count = 0; | |
3563 | } | |
3564 | ||
3565 | p->count += 1; | |
3566 | if (!MUST_BE_DYN_RELOC (r_type)) | |
3567 | p->pc_count += 1; | |
7619e7c7 | 3568 | } |
25dbc73a AM |
3569 | |
3570 | break; | |
7619e7c7 AM |
3571 | } |
3572 | } | |
ee05f2fe | 3573 | |
25dbc73a AM |
3574 | return TRUE; |
3575 | } | |
3576 | \f | |
8853c3d3 AM |
3577 | /* Merge backend specific data from an object file to the output |
3578 | object file when linking. */ | |
3579 | ||
3580 | static bfd_boolean | |
3581 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
3582 | { | |
3583 | flagword old_flags; | |
3584 | flagword new_flags; | |
3585 | bfd_boolean error; | |
3586 | ||
3587 | if (!is_ppc_elf_target (ibfd->xvec) | |
3588 | || !is_ppc_elf_target (obfd->xvec)) | |
3589 | return TRUE; | |
3590 | ||
3591 | /* Check if we have the same endianess. */ | |
3592 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
3593 | return FALSE; | |
3594 | ||
3595 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3596 | old_flags = elf_elfheader (obfd)->e_flags; | |
3597 | if (!elf_flags_init (obfd)) | |
3598 | { | |
3599 | /* First call, no flags set. */ | |
3600 | elf_flags_init (obfd) = TRUE; | |
3601 | elf_elfheader (obfd)->e_flags = new_flags; | |
3602 | } | |
3603 | ||
3604 | /* Compatible flags are ok. */ | |
3605 | else if (new_flags == old_flags) | |
3606 | ; | |
3607 | ||
3608 | /* Incompatible flags. */ | |
3609 | else | |
3610 | { | |
3611 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3612 | to be linked with either. */ | |
3613 | error = FALSE; | |
3614 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3615 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3616 | { | |
3617 | error = TRUE; | |
3618 | (*_bfd_error_handler) | |
3619 | (_("%B: compiled with -mrelocatable and linked with " | |
3620 | "modules compiled normally"), ibfd); | |
3621 | } | |
3622 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3623 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3624 | { | |
3625 | error = TRUE; | |
3626 | (*_bfd_error_handler) | |
3627 | (_("%B: compiled normally and linked with " | |
3628 | "modules compiled with -mrelocatable"), ibfd); | |
3629 | } | |
3630 | ||
3631 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3632 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3633 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3634 | ||
3635 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3636 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3637 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3638 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3639 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3640 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3641 | ||
3642 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3643 | any module uses it. */ | |
3644 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3645 | ||
3646 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3647 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3648 | ||
3649 | /* Warn about any other mismatches. */ | |
3650 | if (new_flags != old_flags) | |
3651 | { | |
3652 | error = TRUE; | |
3653 | (*_bfd_error_handler) | |
3654 | (_("%B: uses different e_flags (0x%lx) fields " | |
3655 | "than previous modules (0x%lx)"), | |
3656 | ibfd, (long) new_flags, (long) old_flags); | |
3657 | } | |
3658 | ||
3659 | if (error) | |
3660 | { | |
3661 | bfd_set_error (bfd_error_bad_value); | |
3662 | return FALSE; | |
3663 | } | |
3664 | } | |
3665 | ||
3666 | return TRUE; | |
3667 | } | |
3668 | \f | |
d7128ce4 AM |
3669 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
3670 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
3671 | int | |
3672 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3673 | struct bfd_link_info *info, | |
0ba07910 AM |
3674 | int force_old_plt, |
3675 | int emit_stub_syms) | |
d7128ce4 AM |
3676 | { |
3677 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 3678 | flagword flags; |
d7128ce4 AM |
3679 | |
3680 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
3681 | |
3682 | if (htab->plt_type == PLT_UNSET) | |
3683 | htab->plt_type = (force_old_plt || !htab->can_use_new_plt | |
3684 | ? PLT_OLD : PLT_NEW); | |
d7128ce4 | 3685 | |
0ba07910 AM |
3686 | htab->emit_stub_syms = emit_stub_syms; |
3687 | ||
4a3dc543 | 3688 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 3689 | |
4a3dc543 | 3690 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
3691 | { |
3692 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3693 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
3694 | |
3695 | /* The new PLT is a loaded section. */ | |
3696 | if (htab->plt != NULL | |
3697 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
3698 | return -1; | |
3699 | ||
3700 | /* The new GOT is not executable. */ | |
3701 | if (htab->got != NULL | |
3702 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
3703 | return -1; | |
d7128ce4 AM |
3704 | } |
3705 | else | |
3706 | { | |
3707 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
3708 | if (htab->glink != NULL |
3709 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
3710 | return -1; | |
d7128ce4 | 3711 | } |
4a3dc543 | 3712 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
3713 | } |
3714 | \f | |
25dbc73a AM |
3715 | /* Return the section that should be marked against GC for a given |
3716 | relocation. */ | |
586119b3 | 3717 | |
25dbc73a AM |
3718 | static asection * |
3719 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 3720 | struct bfd_link_info *info, |
25dbc73a AM |
3721 | Elf_Internal_Rela *rel, |
3722 | struct elf_link_hash_entry *h, | |
3723 | Elf_Internal_Sym *sym) | |
3724 | { | |
3725 | if (h != NULL) | |
07adf181 AM |
3726 | switch (ELF32_R_TYPE (rel->r_info)) |
3727 | { | |
3728 | case R_PPC_GNU_VTINHERIT: | |
3729 | case R_PPC_GNU_VTENTRY: | |
3730 | return NULL; | |
3731 | } | |
3732 | ||
3733 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 3734 | } |
a876ecf9 | 3735 | |
25dbc73a AM |
3736 | /* Update the got, plt and dynamic reloc reference counts for the |
3737 | section being removed. */ | |
3738 | ||
3739 | static bfd_boolean | |
3740 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
3741 | struct bfd_link_info *info, | |
3742 | asection *sec, | |
3743 | const Elf_Internal_Rela *relocs) | |
3744 | { | |
3745 | struct ppc_elf_link_hash_table *htab; | |
3746 | Elf_Internal_Shdr *symtab_hdr; | |
3747 | struct elf_link_hash_entry **sym_hashes; | |
3748 | bfd_signed_vma *local_got_refcounts; | |
3749 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 3750 | asection *got2; |
25dbc73a | 3751 | |
c87b5a93 AM |
3752 | if ((sec->flags & SEC_ALLOC) == 0) |
3753 | return TRUE; | |
3754 | ||
25dbc73a AM |
3755 | elf_section_data (sec)->local_dynrel = NULL; |
3756 | ||
3757 | htab = ppc_elf_hash_table (info); | |
3758 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3759 | sym_hashes = elf_sym_hashes (abfd); | |
3760 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 3761 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3762 | |
3763 | relend = relocs + sec->reloc_count; | |
3764 | for (rel = relocs; rel < relend; rel++) | |
3765 | { | |
3766 | unsigned long r_symndx; | |
3767 | enum elf_ppc_reloc_type r_type; | |
3768 | struct elf_link_hash_entry *h = NULL; | |
3769 | ||
3770 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3771 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 3772 | { |
25dbc73a AM |
3773 | struct ppc_elf_dyn_relocs **pp, *p; |
3774 | struct ppc_elf_link_hash_entry *eh; | |
3775 | ||
3776 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3777 | while (h->root.type == bfd_link_hash_indirect | |
3778 | || h->root.type == bfd_link_hash_warning) | |
3779 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3780 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3781 | ||
3782 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3783 | if (p->sec == sec) | |
3784 | { | |
3785 | /* Everything must go for SEC. */ | |
3786 | *pp = p->next; | |
3787 | break; | |
3788 | } | |
a876ecf9 | 3789 | } |
ee05f2fe | 3790 | |
25dbc73a AM |
3791 | r_type = ELF32_R_TYPE (rel->r_info); |
3792 | switch (r_type) | |
ee05f2fe | 3793 | { |
25dbc73a AM |
3794 | case R_PPC_GOT_TLSLD16: |
3795 | case R_PPC_GOT_TLSLD16_LO: | |
3796 | case R_PPC_GOT_TLSLD16_HI: | |
3797 | case R_PPC_GOT_TLSLD16_HA: | |
3798 | htab->tlsld_got.refcount -= 1; | |
3799 | /* Fall thru */ | |
3800 | ||
3801 | case R_PPC_GOT_TLSGD16: | |
3802 | case R_PPC_GOT_TLSGD16_LO: | |
3803 | case R_PPC_GOT_TLSGD16_HI: | |
3804 | case R_PPC_GOT_TLSGD16_HA: | |
3805 | case R_PPC_GOT_TPREL16: | |
3806 | case R_PPC_GOT_TPREL16_LO: | |
3807 | case R_PPC_GOT_TPREL16_HI: | |
3808 | case R_PPC_GOT_TPREL16_HA: | |
3809 | case R_PPC_GOT_DTPREL16: | |
3810 | case R_PPC_GOT_DTPREL16_LO: | |
3811 | case R_PPC_GOT_DTPREL16_HI: | |
3812 | case R_PPC_GOT_DTPREL16_HA: | |
3813 | case R_PPC_GOT16: | |
3814 | case R_PPC_GOT16_LO: | |
3815 | case R_PPC_GOT16_HI: | |
3816 | case R_PPC_GOT16_HA: | |
3817 | if (h != NULL) | |
ee05f2fe | 3818 | { |
25dbc73a AM |
3819 | if (h->got.refcount > 0) |
3820 | h->got.refcount--; | |
ee05f2fe | 3821 | } |
25dbc73a AM |
3822 | else if (local_got_refcounts != NULL) |
3823 | { | |
3824 | if (local_got_refcounts[r_symndx] > 0) | |
3825 | local_got_refcounts[r_symndx]--; | |
3826 | } | |
3827 | break; | |
ee05f2fe | 3828 | |
25dbc73a AM |
3829 | case R_PPC_REL24: |
3830 | case R_PPC_REL14: | |
3831 | case R_PPC_REL14_BRTAKEN: | |
3832 | case R_PPC_REL14_BRNTAKEN: | |
3833 | case R_PPC_REL32: | |
3b36f7e6 | 3834 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
3835 | break; |
3836 | /* Fall thru */ | |
ee05f2fe | 3837 | |
25dbc73a AM |
3838 | case R_PPC_ADDR32: |
3839 | case R_PPC_ADDR24: | |
3840 | case R_PPC_ADDR16: | |
3841 | case R_PPC_ADDR16_LO: | |
3842 | case R_PPC_ADDR16_HI: | |
3843 | case R_PPC_ADDR16_HA: | |
3844 | case R_PPC_ADDR14: | |
3845 | case R_PPC_ADDR14_BRTAKEN: | |
3846 | case R_PPC_ADDR14_BRNTAKEN: | |
3847 | case R_PPC_UADDR32: | |
3848 | case R_PPC_UADDR16: | |
87538722 AM |
3849 | if (info->shared) |
3850 | break; | |
3851 | ||
25dbc73a AM |
3852 | case R_PPC_PLT32: |
3853 | case R_PPC_PLTREL24: | |
87538722 | 3854 | case R_PPC_PLTREL32: |
25dbc73a AM |
3855 | case R_PPC_PLT16_LO: |
3856 | case R_PPC_PLT16_HI: | |
3857 | case R_PPC_PLT16_HA: | |
3858 | if (h != NULL) | |
3859 | { | |
a6aa5195 AM |
3860 | bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0; |
3861 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
3862 | if (ent->plt.refcount > 0) | |
3863 | ent->plt.refcount -= 1; | |
25dbc73a AM |
3864 | } |
3865 | break; | |
ee05f2fe | 3866 | |
25dbc73a AM |
3867 | default: |
3868 | break; | |
3869 | } | |
7fce784e | 3870 | } |
7fce784e AS |
3871 | return TRUE; |
3872 | } | |
25dbc73a AM |
3873 | \f |
3874 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ | |
7fce784e | 3875 | |
25dbc73a AM |
3876 | asection * |
3877 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) | |
7fce784e | 3878 | { |
25dbc73a | 3879 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 3880 | |
25dbc73a | 3881 | htab = ppc_elf_hash_table (info); |
4a3dc543 | 3882 | if (htab->plt_type == PLT_NEW |
d7128ce4 AM |
3883 | && htab->plt != NULL |
3884 | && htab->plt->output_section != NULL) | |
3885 | { | |
3886 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
3887 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
3888 | } | |
3889 | ||
25dbc73a AM |
3890 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3891 | FALSE, FALSE, TRUE); | |
25dbc73a | 3892 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
3893 | } |
3894 | ||
25dbc73a AM |
3895 | /* Run through all the TLS relocs looking for optimization |
3896 | opportunities. */ | |
252b5132 | 3897 | |
25dbc73a AM |
3898 | bfd_boolean |
3899 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
3900 | struct bfd_link_info *info) | |
252b5132 | 3901 | { |
7fce784e | 3902 | bfd *ibfd; |
25dbc73a AM |
3903 | asection *sec; |
3904 | struct ppc_elf_link_hash_table *htab; | |
252b5132 | 3905 | |
25dbc73a AM |
3906 | if (info->relocatable || info->shared) |
3907 | return TRUE; | |
252b5132 | 3908 | |
7619e7c7 | 3909 | htab = ppc_elf_hash_table (info); |
25dbc73a | 3910 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
252b5132 | 3911 | { |
25dbc73a AM |
3912 | Elf_Internal_Sym *locsyms = NULL; |
3913 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7619e7c7 | 3914 | |
25dbc73a AM |
3915 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
3916 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
3917 | { | |
3918 | Elf_Internal_Rela *relstart, *rel, *relend; | |
3919 | int expecting_tls_get_addr; | |
252b5132 | 3920 | |
25dbc73a AM |
3921 | /* Read the relocations. */ |
3922 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
3923 | info->keep_memory); | |
3924 | if (relstart == NULL) | |
3925 | return FALSE; | |
7619e7c7 | 3926 | |
25dbc73a AM |
3927 | expecting_tls_get_addr = 0; |
3928 | relend = relstart + sec->reloc_count; | |
3929 | for (rel = relstart; rel < relend; rel++) | |
3930 | { | |
3931 | enum elf_ppc_reloc_type r_type; | |
3932 | unsigned long r_symndx; | |
3933 | struct elf_link_hash_entry *h = NULL; | |
3934 | char *tls_mask; | |
3935 | char tls_set, tls_clear; | |
3936 | bfd_boolean is_local; | |
7fce784e | 3937 | |
25dbc73a AM |
3938 | r_symndx = ELF32_R_SYM (rel->r_info); |
3939 | if (r_symndx >= symtab_hdr->sh_info) | |
3940 | { | |
3941 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 3942 | |
25dbc73a AM |
3943 | sym_hashes = elf_sym_hashes (ibfd); |
3944 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3945 | while (h->root.type == bfd_link_hash_indirect | |
3946 | || h->root.type == bfd_link_hash_warning) | |
3947 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3948 | } | |
7619e7c7 | 3949 | |
25dbc73a AM |
3950 | is_local = FALSE; |
3951 | if (h == NULL | |
3952 | || !h->def_dynamic) | |
3953 | is_local = TRUE; | |
7619e7c7 | 3954 | |
25dbc73a AM |
3955 | r_type = ELF32_R_TYPE (rel->r_info); |
3956 | switch (r_type) | |
7619e7c7 | 3957 | { |
25dbc73a AM |
3958 | case R_PPC_GOT_TLSLD16: |
3959 | case R_PPC_GOT_TLSLD16_LO: | |
3960 | case R_PPC_GOT_TLSLD16_HI: | |
3961 | case R_PPC_GOT_TLSLD16_HA: | |
3962 | /* These relocs should never be against a symbol | |
3963 | defined in a shared lib. Leave them alone if | |
3964 | that turns out to be the case. */ | |
3965 | expecting_tls_get_addr = 0; | |
3966 | htab->tlsld_got.refcount -= 1; | |
3967 | if (!is_local) | |
3968 | continue; | |
3969 | ||
3970 | /* LD -> LE */ | |
3971 | tls_set = 0; | |
3972 | tls_clear = TLS_LD; | |
3973 | expecting_tls_get_addr = 1; | |
3974 | break; | |
3975 | ||
3976 | case R_PPC_GOT_TLSGD16: | |
3977 | case R_PPC_GOT_TLSGD16_LO: | |
3978 | case R_PPC_GOT_TLSGD16_HI: | |
3979 | case R_PPC_GOT_TLSGD16_HA: | |
3980 | if (is_local) | |
3981 | /* GD -> LE */ | |
3982 | tls_set = 0; | |
3983 | else | |
3984 | /* GD -> IE */ | |
3985 | tls_set = TLS_TLS | TLS_TPRELGD; | |
3986 | tls_clear = TLS_GD; | |
3987 | expecting_tls_get_addr = 1; | |
3988 | break; | |
3989 | ||
3990 | case R_PPC_GOT_TPREL16: | |
3991 | case R_PPC_GOT_TPREL16_LO: | |
3992 | case R_PPC_GOT_TPREL16_HI: | |
3993 | case R_PPC_GOT_TPREL16_HA: | |
3994 | expecting_tls_get_addr = 0; | |
3995 | if (is_local) | |
3996 | { | |
3997 | /* IE -> LE */ | |
3998 | tls_set = 0; | |
3999 | tls_clear = TLS_TPREL; | |
4000 | break; | |
4001 | } | |
4002 | else | |
4003 | continue; | |
4004 | ||
4005 | case R_PPC_REL14: | |
4006 | case R_PPC_REL14_BRTAKEN: | |
4007 | case R_PPC_REL14_BRNTAKEN: | |
4008 | case R_PPC_REL24: | |
4009 | if (expecting_tls_get_addr | |
4010 | && h != NULL | |
4011 | && h == htab->tls_get_addr) | |
4012 | { | |
a6aa5195 AM |
4013 | struct plt_entry *ent = find_plt_ent (h, NULL, 0); |
4014 | if (ent != NULL && ent->plt.refcount > 0) | |
4015 | ent->plt.refcount -= 1; | |
25dbc73a AM |
4016 | } |
4017 | expecting_tls_get_addr = 0; | |
4018 | continue; | |
4019 | ||
4020 | default: | |
4021 | expecting_tls_get_addr = 0; | |
4022 | continue; | |
7619e7c7 | 4023 | } |
25dbc73a AM |
4024 | |
4025 | if (h != NULL) | |
7619e7c7 | 4026 | { |
25dbc73a AM |
4027 | if (tls_set == 0) |
4028 | { | |
4029 | /* We managed to get rid of a got entry. */ | |
4030 | if (h->got.refcount > 0) | |
4031 | h->got.refcount -= 1; | |
4032 | } | |
4033 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | Elf_Internal_Sym *sym; | |
4038 | bfd_signed_vma *lgot_refs; | |
4039 | char *lgot_masks; | |
4040 | ||
4041 | if (locsyms == NULL) | |
4042 | { | |
4043 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4044 | if (locsyms == NULL) | |
4045 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4046 | symtab_hdr->sh_info, | |
4047 | 0, NULL, NULL, NULL); | |
4048 | if (locsyms == NULL) | |
4049 | { | |
4050 | if (elf_section_data (sec)->relocs != relstart) | |
4051 | free (relstart); | |
4052 | return FALSE; | |
4053 | } | |
4054 | } | |
4055 | sym = locsyms + r_symndx; | |
4056 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4057 | if (lgot_refs == NULL) | |
4058 | abort (); | |
4059 | if (tls_set == 0) | |
4060 | { | |
4061 | /* We managed to get rid of a got entry. */ | |
4062 | if (lgot_refs[r_symndx] > 0) | |
4063 | lgot_refs[r_symndx] -= 1; | |
4064 | } | |
4065 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
4066 | tls_mask = &lgot_masks[r_symndx]; | |
7619e7c7 | 4067 | } |
25dbc73a AM |
4068 | |
4069 | *tls_mask |= tls_set; | |
4070 | *tls_mask &= ~tls_clear; | |
7619e7c7 | 4071 | } |
25dbc73a AM |
4072 | |
4073 | if (elf_section_data (sec)->relocs != relstart) | |
4074 | free (relstart); | |
7619e7c7 | 4075 | } |
25dbc73a AM |
4076 | |
4077 | if (locsyms != NULL | |
4078 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4079 | { | |
4080 | if (!info->keep_memory) | |
4081 | free (locsyms); | |
4082 | else | |
4083 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4084 | } | |
7fce784e | 4085 | } |
25dbc73a AM |
4086 | return TRUE; |
4087 | } | |
4088 | \f | |
4089 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4090 | regular object. The current definition is in some section of the | |
4091 | dynamic object, but we're not including those sections. We have to | |
4092 | change the definition to something the rest of the link can | |
4093 | understand. */ | |
7fce784e | 4094 | |
25dbc73a AM |
4095 | static bfd_boolean |
4096 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4097 | struct elf_link_hash_entry *h) | |
4098 | { | |
4099 | struct ppc_elf_link_hash_table *htab; | |
4100 | asection *s; | |
4101 | unsigned int power_of_two; | |
7fce784e | 4102 | |
25dbc73a AM |
4103 | #ifdef DEBUG |
4104 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4105 | h->root.root.string); | |
4106 | #endif | |
252b5132 | 4107 | |
25dbc73a AM |
4108 | /* Make sure we know what is going on here. */ |
4109 | htab = ppc_elf_hash_table (info); | |
4110 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4111 | && (h->needs_plt | |
4112 | || h->u.weakdef != NULL | |
4113 | || (h->def_dynamic | |
4114 | && h->ref_regular | |
4115 | && !h->def_regular))); | |
252b5132 | 4116 | |
25dbc73a AM |
4117 | /* Deal with function syms. */ |
4118 | if (h->type == STT_FUNC | |
4119 | || h->needs_plt) | |
4120 | { | |
4121 | /* Clear procedure linkage table information for any symbol that | |
4122 | won't need a .plt entry. */ | |
a6aa5195 AM |
4123 | struct plt_entry *ent; |
4124 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4125 | if (ent->plt.refcount > 0) | |
4126 | break; | |
4127 | if (ent == NULL | |
25dbc73a AM |
4128 | || SYMBOL_CALLS_LOCAL (info, h) |
4129 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4130 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 4131 | { |
25dbc73a | 4132 | /* A PLT entry is not required/allowed when: |
252b5132 | 4133 | |
25dbc73a AM |
4134 | 1. We are not using ld.so; because then the PLT entry |
4135 | can't be set up, so we can't use one. In this case, | |
4136 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4137 | |
25dbc73a AM |
4138 | 2. GC has rendered the entry unused. |
4139 | ||
4140 | 3. We know for certain that a call to this symbol | |
4141 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4142 | h->plt.plist = NULL; |
25dbc73a AM |
4143 | h->needs_plt = 0; |
4144 | } | |
4145 | return TRUE; | |
252b5132 | 4146 | } |
25dbc73a | 4147 | else |
a6aa5195 | 4148 | h->plt.plist = NULL; |
252b5132 | 4149 | |
25dbc73a AM |
4150 | /* If this is a weak symbol, and there is a real definition, the |
4151 | processor independent code will have arranged for us to see the | |
4152 | real definition first, and we can just use the same value. */ | |
4153 | if (h->u.weakdef != NULL) | |
252b5132 | 4154 | { |
25dbc73a AM |
4155 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4156 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4157 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4158 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4159 | if (ELIMINATE_COPY_RELOCS) | |
4160 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
4161 | return TRUE; | |
4162 | } | |
dc810e39 | 4163 | |
25dbc73a AM |
4164 | /* This is a reference to a symbol defined by a dynamic object which |
4165 | is not a function. */ | |
252b5132 | 4166 | |
25dbc73a AM |
4167 | /* If we are creating a shared library, we must presume that the |
4168 | only references to the symbol are via the global offset table. | |
4169 | For such cases we need not do anything here; the relocations will | |
4170 | be handled correctly by relocate_section. */ | |
4171 | if (info->shared) | |
4172 | return TRUE; | |
252b5132 | 4173 | |
25dbc73a AM |
4174 | /* If there are no references to this symbol that do not use the |
4175 | GOT, we don't need to generate a copy reloc. */ | |
4176 | if (!h->non_got_ref) | |
4177 | return TRUE; | |
4178 | ||
4dc4a9a5 DJ |
4179 | /* If we didn't find any dynamic relocs in read-only sections, then we'll |
4180 | be keeping the dynamic relocs and avoiding the copy reloc. We can't | |
4181 | do this if there are any small data relocations. */ | |
4182 | if (ELIMINATE_COPY_RELOCS | |
4183 | && !ppc_elf_hash_entry (h)->has_sda_refs) | |
25dbc73a AM |
4184 | { |
4185 | struct ppc_elf_dyn_relocs *p; | |
4186 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
252b5132 | 4187 | { |
25dbc73a AM |
4188 | s = p->sec->output_section; |
4189 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4190 | break; | |
252b5132 RH |
4191 | } |
4192 | ||
25dbc73a | 4193 | if (p == NULL) |
252b5132 | 4194 | { |
25dbc73a AM |
4195 | h->non_got_ref = 0; |
4196 | return TRUE; | |
252b5132 RH |
4197 | } |
4198 | } | |
4199 | ||
909272ee AM |
4200 | if (h->size == 0) |
4201 | { | |
4202 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4203 | h->root.root.string); | |
4204 | return TRUE; | |
4205 | } | |
4206 | ||
25dbc73a AM |
4207 | /* We must allocate the symbol in our .dynbss section, which will |
4208 | become part of the .bss section of the executable. There will be | |
4209 | an entry for this symbol in the .dynsym section. The dynamic | |
4210 | object will contain position independent code, so all references | |
4211 | from the dynamic object to this symbol will go through the global | |
4212 | offset table. The dynamic linker will use the .dynsym entry to | |
4213 | determine the address it must put in the global offset table, so | |
4214 | both the dynamic object and the regular object will refer to the | |
4215 | same memory location for the variable. | |
4216 | ||
4dc4a9a5 DJ |
4217 | Of course, if the symbol is referenced using SDAREL relocs, we |
4218 | must instead allocate it in .sbss. */ | |
25dbc73a | 4219 | |
4dc4a9a5 | 4220 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4221 | s = htab->dynsbss; |
4222 | else | |
4223 | s = htab->dynbss; | |
4224 | BFD_ASSERT (s != NULL); | |
4225 | ||
4226 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
4227 | copy the initial value out of the dynamic object and into the | |
4228 | runtime process image. We need to remember the offset into the | |
4229 | .rela.bss section we are going to use. */ | |
4230 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4231 | { | |
4232 | asection *srel; | |
4233 | ||
4dc4a9a5 | 4234 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4235 | srel = htab->relsbss; |
4236 | else | |
4237 | srel = htab->relbss; | |
4238 | BFD_ASSERT (srel != NULL); | |
4239 | srel->size += sizeof (Elf32_External_Rela); | |
4240 | h->needs_copy = 1; | |
4241 | } | |
7619e7c7 | 4242 | |
25dbc73a AM |
4243 | /* We need to figure out the alignment required for this symbol. I |
4244 | have no idea how ELF linkers handle this. */ | |
4245 | power_of_two = bfd_log2 (h->size); | |
4246 | if (power_of_two > 4) | |
4247 | power_of_two = 4; | |
7619e7c7 | 4248 | |
25dbc73a AM |
4249 | /* Apply the required alignment. */ |
4250 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
4251 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
4252 | { | |
4253 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) | |
7619e7c7 | 4254 | return FALSE; |
7619e7c7 AM |
4255 | } |
4256 | ||
25dbc73a AM |
4257 | /* Define the symbol as being at this point in the section. */ |
4258 | h->root.u.def.section = s; | |
4259 | h->root.u.def.value = s->size; | |
7619e7c7 | 4260 | |
25dbc73a AM |
4261 | /* Increment the section size to make room for the symbol. */ |
4262 | s->size += h->size; | |
7619e7c7 | 4263 | |
25dbc73a AM |
4264 | return TRUE; |
4265 | } | |
4266 | \f | |
ac39eb42 AM |
4267 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
4268 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
4269 | specifying the addend on the plt relocation. For -fpic code, the sym | |
4270 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
4271 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
4272 | |
4273 | static bfd_boolean | |
4274 | add_stub_sym (struct plt_entry *ent, | |
4275 | struct elf_link_hash_entry *h, | |
ac39eb42 | 4276 | struct bfd_link_info *info) |
0ba07910 AM |
4277 | { |
4278 | struct elf_link_hash_entry *sh; | |
4279 | size_t len1, len2, len3; | |
4280 | char *name; | |
ac39eb42 AM |
4281 | const char *stub; |
4282 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
4283 | ||
4284 | if (info->shared || info->pie) | |
4285 | stub = ".plt_pic32."; | |
4286 | else | |
4287 | stub = ".plt_call32."; | |
0ba07910 AM |
4288 | |
4289 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 4290 | len2 = strlen (stub); |
0ba07910 AM |
4291 | len3 = 0; |
4292 | if (ent->sec) | |
4293 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 4294 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
4295 | if (name == NULL) |
4296 | return FALSE; | |
4297 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
4298 | if (ent->sec) | |
4299 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
4300 | memcpy (name + 8 + len3, stub, len2); |
4301 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
4302 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
4303 | if (sh == NULL) | |
4304 | return FALSE; | |
4305 | if (sh->root.type == bfd_link_hash_new) | |
4306 | { | |
4307 | sh->root.type = bfd_link_hash_defined; | |
4308 | sh->root.u.def.section = htab->glink; | |
4309 | sh->root.u.def.value = ent->glink_offset; | |
4310 | sh->ref_regular = 1; | |
4311 | sh->def_regular = 1; | |
4312 | sh->ref_regular_nonweak = 1; | |
4313 | sh->forced_local = 1; | |
4314 | sh->non_elf = 0; | |
4315 | } | |
4316 | return TRUE; | |
4317 | } | |
4318 | ||
3b36f7e6 AM |
4319 | /* Allocate NEED contiguous space in .got, and return the offset. |
4320 | Handles allocation of the got header when crossing 32k. */ | |
4321 | ||
4322 | static bfd_vma | |
4323 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
4324 | { | |
4325 | bfd_vma where; | |
4a3dc543 | 4326 | unsigned int max_before_header; |
3b36f7e6 | 4327 | |
4a3dc543 | 4328 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
4329 | { |
4330 | where = htab->got->size; | |
4331 | htab->got->size += need; | |
4332 | } | |
3b36f7e6 AM |
4333 | else |
4334 | { | |
4a3dc543 RS |
4335 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
4336 | if (need <= htab->got_gap) | |
3b36f7e6 | 4337 | { |
4a3dc543 RS |
4338 | where = max_before_header - htab->got_gap; |
4339 | htab->got_gap -= need; | |
4340 | } | |
4341 | else | |
4342 | { | |
4343 | if (htab->got->size + need > max_before_header | |
4344 | && htab->got->size <= max_before_header) | |
4345 | { | |
4346 | htab->got_gap = max_before_header - htab->got->size; | |
4347 | htab->got->size = max_before_header + htab->got_header_size; | |
4348 | } | |
4349 | where = htab->got->size; | |
4350 | htab->got->size += need; | |
3b36f7e6 | 4351 | } |
3b36f7e6 AM |
4352 | } |
4353 | return where; | |
4354 | } | |
4355 | ||
25dbc73a | 4356 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 4357 | |
b34976b6 | 4358 | static bfd_boolean |
25dbc73a | 4359 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 4360 | { |
25dbc73a AM |
4361 | struct bfd_link_info *info = inf; |
4362 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 4363 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 4364 | struct ppc_elf_dyn_relocs *p; |
252b5132 | 4365 | |
25dbc73a | 4366 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 4367 | return TRUE; |
252b5132 | 4368 | |
25dbc73a AM |
4369 | if (h->root.type == bfd_link_hash_warning) |
4370 | /* When warning symbols are created, they **replace** the "real" | |
4371 | entry in the hash table, thus we never get to see the real | |
4372 | symbol in a hash traversal. So look at it now. */ | |
4373 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e47cd125 | 4374 | |
7619e7c7 | 4375 | htab = ppc_elf_hash_table (info); |
a6aa5195 | 4376 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4377 | { |
a6aa5195 AM |
4378 | struct plt_entry *ent; |
4379 | bfd_boolean doneone = FALSE; | |
28e99bb6 AM |
4380 | bfd_vma plt_offset = 0, glink_offset = 0; |
4381 | ||
a6aa5195 AM |
4382 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
4383 | if (ent->plt.refcount > 0) | |
4384 | { | |
4385 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4386 | if (h->dynindx == -1 | |
4387 | && !h->forced_local) | |
4388 | { | |
4389 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4390 | return FALSE; | |
4391 | } | |
252b5132 | 4392 | |
a6aa5195 AM |
4393 | if (info->shared |
4394 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
4395 | { | |
4396 | asection *s = htab->plt; | |
7619e7c7 | 4397 | |
4a3dc543 | 4398 | if (htab->plt_type == PLT_NEW) |
a6aa5195 | 4399 | { |
a6aa5195 | 4400 | if (!doneone) |
28e99bb6 AM |
4401 | { |
4402 | plt_offset = s->size; | |
4403 | s->size += 4; | |
4404 | } | |
4405 | ent->plt.offset = plt_offset; | |
d7128ce4 | 4406 | |
a6aa5195 | 4407 | s = htab->glink; |
28e99bb6 AM |
4408 | if (!doneone || info->shared || info->pie) |
4409 | { | |
4410 | glink_offset = s->size; | |
4411 | s->size += GLINK_ENTRY_SIZE; | |
4412 | } | |
4413 | if (!doneone | |
4414 | && !info->shared | |
a6aa5195 AM |
4415 | && !h->def_regular) |
4416 | { | |
4417 | h->root.u.def.section = s; | |
28e99bb6 | 4418 | h->root.u.def.value = glink_offset; |
a6aa5195 | 4419 | } |
28e99bb6 | 4420 | ent->glink_offset = glink_offset; |
0ba07910 AM |
4421 | |
4422 | if (htab->emit_stub_syms | |
ac39eb42 | 4423 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 4424 | return FALSE; |
a6aa5195 AM |
4425 | } |
4426 | else | |
4427 | { | |
a6aa5195 AM |
4428 | if (!doneone) |
4429 | { | |
28e99bb6 AM |
4430 | /* If this is the first .plt entry, make room |
4431 | for the special first entry. */ | |
4432 | if (s->size == 0) | |
9d8504b1 | 4433 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
4434 | |
4435 | /* The PowerPC PLT is actually composed of two | |
4436 | parts, the first part is 2 words (for a load | |
4437 | and a jump), and then there is a remaining | |
4438 | word available at the end. */ | |
9d8504b1 PB |
4439 | plt_offset = (htab->plt_initial_entry_size |
4440 | + (htab->plt_slot_size | |
4441 | * ((s->size | |
4442 | - htab->plt_initial_entry_size) | |
4443 | / htab->plt_entry_size))); | |
28e99bb6 AM |
4444 | |
4445 | /* If this symbol is not defined in a regular | |
4446 | file, and we are not generating a shared | |
4447 | library, then set the symbol to this location | |
4448 | in the .plt. This is required to make | |
4449 | function pointers compare as equal between | |
4450 | the normal executable and the shared library. */ | |
4451 | if (! info->shared | |
4452 | && !h->def_regular) | |
4453 | { | |
4454 | h->root.u.def.section = s; | |
4455 | h->root.u.def.value = plt_offset; | |
4456 | } | |
4457 | ||
9d8504b1 PB |
4458 | /* Make room for this entry. */ |
4459 | s->size += htab->plt_entry_size; | |
4460 | /* After the 8192nd entry, room for two entries | |
4461 | is allocated. */ | |
4a3dc543 | 4462 | if (htab->plt_type == PLT_OLD |
9d8504b1 PB |
4463 | && (s->size - htab->plt_initial_entry_size) |
4464 | / htab->plt_entry_size | |
4465 | > PLT_NUM_SINGLE_ENTRIES) | |
4466 | s->size += htab->plt_entry_size; | |
a6aa5195 | 4467 | } |
28e99bb6 | 4468 | ent->plt.offset = plt_offset; |
a6aa5195 | 4469 | } |
25dbc73a | 4470 | |
a6aa5195 AM |
4471 | /* We also need to make an entry in the .rela.plt section. */ |
4472 | if (!doneone) | |
4473 | { | |
4474 | htab->relplt->size += sizeof (Elf32_External_Rela); | |
9d8504b1 | 4475 | |
4a3dc543 | 4476 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
4477 | { |
4478 | /* Allocate space for the unloaded relocations. */ | |
4479 | if (!info->shared) | |
4480 | { | |
4481 | if (ent->plt.offset | |
4482 | == (bfd_vma) htab->plt_initial_entry_size) | |
4483 | { | |
4484 | htab->srelplt2->size | |
4485 | += sizeof (Elf32_External_Rela) | |
4486 | * VXWORKS_PLTRESOLVE_RELOCS; | |
4487 | } | |
4488 | ||
4489 | htab->srelplt2->size | |
4490 | += sizeof (Elf32_External_Rela) | |
4491 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS; | |
4492 | } | |
4493 | ||
4494 | /* Every PLT entry has an associated GOT entry in | |
4495 | .got.plt. */ | |
4496 | htab->sgotplt->size += 4; | |
4497 | } | |
a6aa5195 AM |
4498 | doneone = TRUE; |
4499 | } | |
4500 | } | |
4501 | else | |
4502 | ent->plt.offset = (bfd_vma) -1; | |
a6aa5195 | 4503 | } |
2ce859a1 AM |
4504 | else |
4505 | ent->plt.offset = (bfd_vma) -1; | |
4506 | ||
4507 | if (!doneone) | |
4508 | { | |
4509 | h->plt.plist = NULL; | |
4510 | h->needs_plt = 0; | |
4511 | } | |
25dbc73a AM |
4512 | } |
4513 | else | |
4514 | { | |
a6aa5195 | 4515 | h->plt.plist = NULL; |
25dbc73a AM |
4516 | h->needs_plt = 0; |
4517 | } | |
4518 | ||
4519 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4520 | if (eh->elf.got.refcount > 0) | |
4521 | { | |
4522 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4523 | if (eh->elf.dynindx == -1 | |
4524 | && !eh->elf.forced_local) | |
4525 | { | |
4526 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 4527 | return FALSE; |
25dbc73a | 4528 | } |
252b5132 | 4529 | |
25dbc73a AM |
4530 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
4531 | && !eh->elf.def_dynamic) | |
4532 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ | |
4533 | eh->elf.got.offset = (bfd_vma) -1; | |
4534 | else | |
4535 | { | |
4536 | bfd_boolean dyn; | |
3b36f7e6 | 4537 | unsigned int need = 0; |
25dbc73a | 4538 | if ((eh->tls_mask & TLS_TLS) != 0) |
252b5132 | 4539 | { |
25dbc73a | 4540 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 | 4541 | need += 8; |
25dbc73a | 4542 | if ((eh->tls_mask & TLS_GD) != 0) |
3b36f7e6 | 4543 | need += 8; |
25dbc73a | 4544 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4545 | need += 4; |
25dbc73a | 4546 | if ((eh->tls_mask & TLS_DTPREL) != 0) |
3b36f7e6 | 4547 | need += 4; |
252b5132 | 4548 | } |
25dbc73a | 4549 | else |
3b36f7e6 AM |
4550 | need += 4; |
4551 | eh->elf.got.offset = allocate_got (htab, need); | |
25dbc73a AM |
4552 | dyn = htab->elf.dynamic_sections_created; |
4553 | if ((info->shared | |
4554 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
4555 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
4556 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 4557 | { |
3b36f7e6 AM |
4558 | /* All the entries we allocated need relocs. |
4559 | Except LD only needs one. */ | |
25dbc73a | 4560 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 AM |
4561 | need -= 4; |
4562 | htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4); | |
252b5132 | 4563 | } |
25dbc73a AM |
4564 | } |
4565 | } | |
4566 | else | |
4567 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 4568 | |
25dbc73a AM |
4569 | if (eh->dyn_relocs == NULL) |
4570 | return TRUE; | |
252b5132 | 4571 | |
25dbc73a AM |
4572 | /* In the shared -Bsymbolic case, discard space allocated for |
4573 | dynamic pc-relative relocs against symbols which turn out to be | |
4574 | defined in regular objects. For the normal shared case, discard | |
4575 | space for relocs that have become local due to symbol visibility | |
4576 | changes. */ | |
4577 | ||
4578 | if (info->shared) | |
4579 | { | |
4580 | /* Relocs that use pc_count are those that appear on a call insn, | |
4581 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
4582 | generated via assembly. We want calls to protected symbols to | |
4583 | resolve directly to the function rather than going via the plt. | |
4584 | If people want function pointer comparisons to work as expected | |
4585 | then they should avoid writing weird assembly. */ | |
4586 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
4587 | { | |
4588 | struct ppc_elf_dyn_relocs **pp; | |
4589 | ||
4590 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 4591 | { |
25dbc73a AM |
4592 | p->count -= p->pc_count; |
4593 | p->pc_count = 0; | |
4594 | if (p->count == 0) | |
4595 | *pp = p->next; | |
4596 | else | |
4597 | pp = &p->next; | |
252b5132 | 4598 | } |
25dbc73a | 4599 | } |
252b5132 | 4600 | |
25dbc73a AM |
4601 | /* Also discard relocs on undefined weak syms with non-default |
4602 | visibility. */ | |
cab87ef9 AM |
4603 | if (eh->dyn_relocs != NULL |
4604 | && h->root.type == bfd_link_hash_undefweak) | |
25dbc73a | 4605 | { |
dfbb6ac9 AM |
4606 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
4607 | eh->dyn_relocs = NULL; | |
4608 | ||
4609 | /* Make sure undefined weak symbols are output as a dynamic | |
4610 | symbol in PIEs. */ | |
4611 | else if (h->dynindx == -1 | |
4612 | && !h->forced_local) | |
4613 | { | |
4614 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4615 | return FALSE; | |
4616 | } | |
25dbc73a AM |
4617 | } |
4618 | } | |
4619 | else if (ELIMINATE_COPY_RELOCS) | |
4620 | { | |
4621 | /* For the non-shared case, discard space for relocs against | |
4622 | symbols which turn out to need copy relocs or are not | |
4623 | dynamic. */ | |
7619e7c7 | 4624 | |
25dbc73a AM |
4625 | if (!h->non_got_ref |
4626 | && h->def_dynamic | |
4627 | && !h->def_regular) | |
4628 | { | |
4629 | /* Make sure this symbol is output as a dynamic symbol. | |
4630 | Undefined weak syms won't yet be marked as dynamic. */ | |
4631 | if (h->dynindx == -1 | |
4632 | && !h->forced_local) | |
4633 | { | |
4634 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4635 | return FALSE; | |
4636 | } | |
7619e7c7 | 4637 | |
25dbc73a AM |
4638 | /* If that succeeded, we know we'll be keeping all the |
4639 | relocs. */ | |
4640 | if (h->dynindx != -1) | |
4641 | goto keep; | |
4642 | } | |
252b5132 | 4643 | |
25dbc73a | 4644 | eh->dyn_relocs = NULL; |
252b5132 | 4645 | |
25dbc73a AM |
4646 | keep: ; |
4647 | } | |
252b5132 | 4648 | |
25dbc73a AM |
4649 | /* Finally, allocate space. */ |
4650 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4651 | { | |
4652 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
4653 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
4654 | } | |
252b5132 | 4655 | |
25dbc73a AM |
4656 | return TRUE; |
4657 | } | |
7619e7c7 | 4658 | |
25dbc73a | 4659 | /* Find any dynamic relocs that apply to read-only sections. */ |
7619e7c7 | 4660 | |
25dbc73a AM |
4661 | static bfd_boolean |
4662 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) | |
4663 | { | |
4664 | struct ppc_elf_dyn_relocs *p; | |
7619e7c7 | 4665 | |
25dbc73a AM |
4666 | if (h->root.type == bfd_link_hash_indirect) |
4667 | return TRUE; | |
252b5132 | 4668 | |
25dbc73a AM |
4669 | if (h->root.type == bfd_link_hash_warning) |
4670 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 4671 | |
25dbc73a AM |
4672 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) |
4673 | { | |
4674 | asection *s = p->sec->output_section; | |
ee05f2fe | 4675 | |
25dbc73a AM |
4676 | if (s != NULL |
4677 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
4678 | == (SEC_READONLY | SEC_ALLOC))) | |
4679 | { | |
4680 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
ee05f2fe | 4681 | |
25dbc73a AM |
4682 | /* Not an error, just cut short the traversal. */ |
4683 | return FALSE; | |
4684 | } | |
4685 | } | |
4686 | return TRUE; | |
4687 | } | |
4688 | ||
4689 | /* Set the sizes of the dynamic sections. */ | |
4690 | ||
4691 | static bfd_boolean | |
4692 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4693 | struct bfd_link_info *info) | |
4694 | { | |
4695 | struct ppc_elf_link_hash_table *htab; | |
4696 | asection *s; | |
4697 | bfd_boolean relocs; | |
4698 | bfd *ibfd; | |
7fce784e | 4699 | |
252b5132 | 4700 | #ifdef DEBUG |
25dbc73a | 4701 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 4702 | #endif |
252b5132 | 4703 | |
25dbc73a AM |
4704 | htab = ppc_elf_hash_table (info); |
4705 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 4706 | |
25dbc73a AM |
4707 | if (elf_hash_table (info)->dynamic_sections_created) |
4708 | { | |
4709 | /* Set the contents of the .interp section to the interpreter. */ | |
4710 | if (info->executable) | |
4711 | { | |
4712 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); | |
4713 | BFD_ASSERT (s != NULL); | |
4714 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4715 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4716 | } | |
4717 | } | |
252b5132 | 4718 | |
4a3dc543 | 4719 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 4720 | htab->got_header_size = 16; |
4a3dc543 | 4721 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 4722 | htab->got_header_size = 12; |
252b5132 | 4723 | |
25dbc73a AM |
4724 | /* Set up .got offsets for local syms, and space for local dynamic |
4725 | relocs. */ | |
4726 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4727 | { | |
4728 | bfd_signed_vma *local_got; | |
4729 | bfd_signed_vma *end_local_got; | |
4730 | char *lgot_masks; | |
4731 | bfd_size_type locsymcount; | |
4732 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 4733 | |
d2663f46 | 4734 | if (!is_ppc_elf_target (ibfd->xvec)) |
25dbc73a | 4735 | continue; |
7fce784e | 4736 | |
25dbc73a AM |
4737 | for (s = ibfd->sections; s != NULL; s = s->next) |
4738 | { | |
4739 | struct ppc_elf_dyn_relocs *p; | |
252b5132 | 4740 | |
25dbc73a AM |
4741 | for (p = ((struct ppc_elf_dyn_relocs *) |
4742 | elf_section_data (s)->local_dynrel); | |
4743 | p != NULL; | |
4744 | p = p->next) | |
4745 | { | |
4746 | if (!bfd_is_abs_section (p->sec) | |
4747 | && bfd_is_abs_section (p->sec->output_section)) | |
4748 | { | |
4749 | /* Input section has been discarded, either because | |
4750 | it is a copy of a linkonce section or due to | |
4751 | linker script /DISCARD/, so we'll be discarding | |
4752 | the relocs too. */ | |
7fce784e | 4753 | } |
25dbc73a | 4754 | else if (p->count != 0) |
7fce784e | 4755 | { |
25dbc73a AM |
4756 | elf_section_data (p->sec)->sreloc->size |
4757 | += p->count * sizeof (Elf32_External_Rela); | |
4758 | if ((p->sec->output_section->flags | |
4759 | & (SEC_READONLY | SEC_ALLOC)) | |
4760 | == (SEC_READONLY | SEC_ALLOC)) | |
4761 | info->flags |= DF_TEXTREL; | |
7fce784e | 4762 | } |
252b5132 | 4763 | } |
252b5132 | 4764 | } |
252b5132 | 4765 | |
25dbc73a AM |
4766 | local_got = elf_local_got_refcounts (ibfd); |
4767 | if (!local_got) | |
4768 | continue; | |
252b5132 | 4769 | |
25dbc73a AM |
4770 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
4771 | locsymcount = symtab_hdr->sh_info; | |
4772 | end_local_got = local_got + locsymcount; | |
4773 | lgot_masks = (char *) end_local_got; | |
25dbc73a AM |
4774 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
4775 | if (*local_got > 0) | |
4776 | { | |
4777 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
4778 | { | |
4779 | /* If just an LD reloc, we'll just use | |
4780 | htab->tlsld_got.offset. */ | |
3b36f7e6 | 4781 | htab->tlsld_got.refcount += 1; |
25dbc73a AM |
4782 | *local_got = (bfd_vma) -1; |
4783 | } | |
4784 | else | |
4785 | { | |
3b36f7e6 | 4786 | unsigned int need = 0; |
25dbc73a AM |
4787 | if ((*lgot_masks & TLS_TLS) != 0) |
4788 | { | |
4789 | if ((*lgot_masks & TLS_GD) != 0) | |
3b36f7e6 | 4790 | need += 8; |
25dbc73a | 4791 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4792 | need += 4; |
25dbc73a | 4793 | if ((*lgot_masks & TLS_DTPREL) != 0) |
3b36f7e6 | 4794 | need += 4; |
25dbc73a AM |
4795 | } |
4796 | else | |
3b36f7e6 AM |
4797 | need += 4; |
4798 | *local_got = allocate_got (htab, need); | |
25dbc73a | 4799 | if (info->shared) |
3b36f7e6 AM |
4800 | htab->relgot->size += (need |
4801 | * (sizeof (Elf32_External_Rela) / 4)); | |
25dbc73a AM |
4802 | } |
4803 | } | |
4804 | else | |
4805 | *local_got = (bfd_vma) -1; | |
4806 | } | |
252b5132 | 4807 | |
3b36f7e6 AM |
4808 | if (htab->tlsld_got.refcount > 0) |
4809 | { | |
4810 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
4811 | if (info->shared) | |
4812 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
4813 | } | |
4814 | else | |
4815 | htab->tlsld_got.offset = (bfd_vma) -1; | |
4816 | ||
25dbc73a AM |
4817 | /* Allocate space for global sym dynamic relocs. */ |
4818 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
4819 | ||
4a3dc543 | 4820 | if (htab->got != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
4821 | { |
4822 | unsigned int g_o_t = 32768; | |
4823 | ||
4d962050 AM |
4824 | /* If we haven't allocated the header, do so now. When we get here, |
4825 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
4826 | or 32780 to 65536 (header allocated). For new plt/got, the | |
4827 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
4828 | if (htab->got->size <= 32768) |
4829 | { | |
4830 | g_o_t = htab->got->size; | |
4a3dc543 | 4831 | if (htab->plt_type == PLT_OLD) |
4d962050 | 4832 | g_o_t += 4; |
3b36f7e6 AM |
4833 | htab->got->size += htab->got_header_size; |
4834 | } | |
3b36f7e6 AM |
4835 | |
4836 | htab->elf.hgot->root.u.def.value = g_o_t; | |
4837 | } | |
4838 | ||
d7128ce4 AM |
4839 | if (htab->glink != NULL && htab->glink->size != 0) |
4840 | { | |
4841 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
4842 | /* Space for the branch table. */ |
4843 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
4844 | /* Pad out to align the start of PLTresolve. */ | |
4845 | htab->glink->size += -htab->glink->size & 15; | |
d7128ce4 | 4846 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 AM |
4847 | |
4848 | if (htab->emit_stub_syms) | |
4849 | { | |
4850 | struct elf_link_hash_entry *sh; | |
4851 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
4852 | TRUE, FALSE, FALSE); | |
4853 | if (sh == NULL) | |
4854 | return FALSE; | |
4855 | if (sh->root.type == bfd_link_hash_new) | |
4856 | { | |
4857 | sh->root.type = bfd_link_hash_defined; | |
4858 | sh->root.u.def.section = htab->glink; | |
4859 | sh->root.u.def.value = htab->glink_pltresolve; | |
4860 | sh->ref_regular = 1; | |
4861 | sh->def_regular = 1; | |
4862 | sh->ref_regular_nonweak = 1; | |
4863 | sh->forced_local = 1; | |
4864 | sh->non_elf = 0; | |
4865 | } | |
4866 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
4867 | TRUE, FALSE, FALSE); | |
4868 | if (sh == NULL) | |
4869 | return FALSE; | |
4870 | if (sh->root.type == bfd_link_hash_new) | |
4871 | { | |
4872 | sh->root.type = bfd_link_hash_defined; | |
4873 | sh->root.u.def.section = htab->glink; | |
4874 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
4875 | sh->ref_regular = 1; | |
4876 | sh->def_regular = 1; | |
4877 | sh->ref_regular_nonweak = 1; | |
4878 | sh->forced_local = 1; | |
4879 | sh->non_elf = 0; | |
4880 | } | |
4881 | } | |
d7128ce4 AM |
4882 | } |
4883 | ||
25dbc73a AM |
4884 | /* We've now determined the sizes of the various dynamic sections. |
4885 | Allocate memory for them. */ | |
4886 | relocs = FALSE; | |
4887 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 4888 | { |
9d8504b1 PB |
4889 | bfd_boolean strip_section = TRUE; |
4890 | ||
25dbc73a AM |
4891 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
4892 | continue; | |
252b5132 | 4893 | |
25dbc73a | 4894 | if (s == htab->plt |
d7128ce4 | 4895 | || s == htab->glink |
644285ef | 4896 | || s == htab->got |
9d8504b1 | 4897 | || s == htab->sgotplt |
c456f082 AM |
4898 | || s == htab->sbss |
4899 | || s == htab->dynbss | |
4900 | || s == htab->dynsbss) | |
25dbc73a | 4901 | { |
9d8504b1 PB |
4902 | /* We'd like to strip these sections if they aren't needed, but if |
4903 | we've exported dynamic symbols from them we must leave them. | |
4904 | It's too late to tell BFD to get rid of the symbols. */ | |
7325306f | 4905 | if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL) |
9d8504b1 | 4906 | strip_section = FALSE; |
25dbc73a AM |
4907 | /* Strip this section if we don't need it; see the |
4908 | comment below. */ | |
4909 | } | |
c9a2f333 AM |
4910 | else if (s == htab->sdata[0].section |
4911 | || s == htab->sdata[1].section) | |
25dbc73a | 4912 | { |
c9a2f333 | 4913 | /* Strip these too. */ |
25dbc73a | 4914 | } |
0112cd26 | 4915 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
25dbc73a | 4916 | { |
c456f082 | 4917 | if (s->size != 0) |
25dbc73a AM |
4918 | { |
4919 | /* Remember whether there are any relocation sections. */ | |
4920 | relocs = TRUE; | |
252b5132 | 4921 | |
25dbc73a AM |
4922 | /* We use the reloc_count field as a counter if we need |
4923 | to copy relocs into the output file. */ | |
4924 | s->reloc_count = 0; | |
252b5132 RH |
4925 | } |
4926 | } | |
25dbc73a AM |
4927 | else |
4928 | { | |
4929 | /* It's not one of our sections, so don't allocate space. */ | |
4930 | continue; | |
4931 | } | |
252b5132 | 4932 | |
9d8504b1 | 4933 | if (s->size == 0 && strip_section) |
25dbc73a | 4934 | { |
c456f082 AM |
4935 | /* If we don't need this section, strip it from the |
4936 | output file. This is mostly to handle .rela.bss and | |
4937 | .rela.plt. We must create both sections in | |
4938 | create_dynamic_sections, because they must be created | |
4939 | before the linker maps input sections to output | |
4940 | sections. The linker does that before | |
4941 | adjust_dynamic_symbol is called, and it is that | |
4942 | function which decides whether anything needs to go | |
4943 | into these sections. */ | |
8423293d | 4944 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
4945 | continue; |
4946 | } | |
7fce784e | 4947 | |
d7128ce4 | 4948 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
4949 | continue; |
4950 | ||
25dbc73a AM |
4951 | /* Allocate memory for the section contents. */ |
4952 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
4953 | if (s->contents == NULL) | |
4954 | return FALSE; | |
4955 | } | |
252b5132 | 4956 | |
25dbc73a | 4957 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 4958 | { |
25dbc73a AM |
4959 | /* Add some entries to the .dynamic section. We fill in the |
4960 | values later, in ppc_elf_finish_dynamic_sections, but we | |
4961 | must add the entries now so that we get the correct size for | |
4962 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4963 | dynamic linker and used by the debugger. */ | |
4964 | #define add_dynamic_entry(TAG, VAL) \ | |
4965 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 4966 | |
25dbc73a | 4967 | if (info->executable) |
7619e7c7 | 4968 | { |
25dbc73a AM |
4969 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
4970 | return FALSE; | |
7619e7c7 AM |
4971 | } |
4972 | ||
25dbc73a | 4973 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 4974 | { |
25dbc73a AM |
4975 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4976 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4977 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4978 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4979 | return FALSE; | |
4980 | } | |
7619e7c7 | 4981 | |
d7128ce4 AM |
4982 | if (htab->glink != NULL && htab->glink->size != 0) |
4983 | { | |
1fe44d79 | 4984 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 AM |
4985 | return FALSE; |
4986 | } | |
4987 | ||
25dbc73a AM |
4988 | if (relocs) |
4989 | { | |
4990 | if (!add_dynamic_entry (DT_RELA, 0) | |
4991 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4992 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4993 | return FALSE; | |
4994 | } | |
7619e7c7 | 4995 | |
25dbc73a AM |
4996 | /* If any dynamic relocs apply to a read-only section, then we |
4997 | need a DT_TEXTREL entry. */ | |
4998 | if ((info->flags & DF_TEXTREL) == 0) | |
4999 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
5000 | info); | |
7619e7c7 | 5001 | |
25dbc73a AM |
5002 | if ((info->flags & DF_TEXTREL) != 0) |
5003 | { | |
5004 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5005 | return FALSE; | |
7619e7c7 AM |
5006 | } |
5007 | } | |
25dbc73a AM |
5008 | #undef add_dynamic_entry |
5009 | ||
7619e7c7 AM |
5010 | return TRUE; |
5011 | } | |
25dbc73a AM |
5012 | \f |
5013 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
5014 | ||
5015 | static const int shared_stub_entry[] = | |
5016 | { | |
5017 | 0x7c0802a6, /* mflr 0 */ | |
5018 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
5019 | 0x7d6802a6, /* mflr 11 */ | |
5020 | 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ | |
5021 | 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ | |
5022 | 0x7c0803a6, /* mtlr 0 */ | |
5023 | 0x7d6903a6, /* mtctr 11 */ | |
5024 | 0x4e800420, /* bctr */ | |
5025 | }; | |
5026 | ||
5027 | static const int stub_entry[] = | |
5028 | { | |
5029 | 0x3d600000, /* lis 11,xxx@ha */ | |
5030 | 0x396b0000, /* addi 11,11,xxx@l */ | |
5031 | 0x7d6903a6, /* mtctr 11 */ | |
5032 | 0x4e800420, /* bctr */ | |
5033 | }; | |
5034 | ||
5035 | static bfd_boolean | |
5036 | ppc_elf_relax_section (bfd *abfd, | |
5037 | asection *isec, | |
5038 | struct bfd_link_info *link_info, | |
5039 | bfd_boolean *again) | |
5040 | { | |
5041 | struct one_fixup | |
5042 | { | |
5043 | struct one_fixup *next; | |
5044 | asection *tsec; | |
5045 | bfd_vma toff; | |
5046 | bfd_vma trampoff; | |
5047 | }; | |
7619e7c7 | 5048 | |
25dbc73a AM |
5049 | Elf_Internal_Shdr *symtab_hdr; |
5050 | bfd_byte *contents = NULL; | |
5051 | Elf_Internal_Sym *isymbuf = NULL; | |
5052 | Elf_Internal_Rela *internal_relocs = NULL; | |
5053 | Elf_Internal_Rela *irel, *irelend; | |
5054 | struct one_fixup *fixups = NULL; | |
5055 | bfd_boolean changed; | |
d7128ce4 | 5056 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 5057 | bfd_size_type trampoff; |
a6aa5195 | 5058 | asection *got2; |
7619e7c7 | 5059 | |
25dbc73a | 5060 | *again = FALSE; |
7619e7c7 | 5061 | |
c87b5a93 AM |
5062 | /* Nothing to do if there are no relocations, and no need to do |
5063 | anything with non-alloc sections. */ | |
5064 | if ((isec->flags & SEC_ALLOC) == 0 | |
5065 | || (isec->flags & SEC_RELOC) == 0 | |
5066 | || isec->reloc_count == 0) | |
25dbc73a | 5067 | return TRUE; |
7619e7c7 | 5068 | |
25dbc73a AM |
5069 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
5070 | /* Space for a branch around any trampolines. */ | |
5071 | trampoff += 4; | |
7619e7c7 | 5072 | |
25dbc73a | 5073 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
7619e7c7 | 5074 | |
25dbc73a AM |
5075 | /* Get a copy of the native relocations. */ |
5076 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, | |
5077 | link_info->keep_memory); | |
5078 | if (internal_relocs == NULL) | |
5079 | goto error_return; | |
7619e7c7 | 5080 | |
d7128ce4 | 5081 | htab = ppc_elf_hash_table (link_info); |
a6aa5195 | 5082 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
7619e7c7 | 5083 | |
a6aa5195 | 5084 | irelend = internal_relocs + isec->reloc_count; |
25dbc73a | 5085 | for (irel = internal_relocs; irel < irelend; irel++) |
7619e7c7 | 5086 | { |
25dbc73a AM |
5087 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
5088 | bfd_vma symaddr, reladdr, toff, roff; | |
5089 | asection *tsec; | |
5090 | struct one_fixup *f; | |
5091 | size_t insn_offset = 0; | |
5092 | bfd_vma max_branch_offset, val; | |
5093 | bfd_byte *hit_addr; | |
5094 | unsigned long t0; | |
5095 | unsigned char sym_type; | |
7619e7c7 | 5096 | |
25dbc73a AM |
5097 | switch (r_type) |
5098 | { | |
5099 | case R_PPC_REL24: | |
5100 | case R_PPC_LOCAL24PC: | |
5101 | case R_PPC_PLTREL24: | |
5102 | max_branch_offset = 1 << 25; | |
5103 | break; | |
7619e7c7 | 5104 | |
25dbc73a AM |
5105 | case R_PPC_REL14: |
5106 | case R_PPC_REL14_BRTAKEN: | |
5107 | case R_PPC_REL14_BRNTAKEN: | |
5108 | max_branch_offset = 1 << 15; | |
5109 | break; | |
7619e7c7 | 5110 | |
25dbc73a AM |
5111 | default: |
5112 | continue; | |
5113 | } | |
7619e7c7 | 5114 | |
25dbc73a AM |
5115 | /* Get the value of the symbol referred to by the reloc. */ |
5116 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5117 | { | |
5118 | /* A local symbol. */ | |
5119 | Elf_Internal_Sym *isym; | |
7fce784e | 5120 | |
25dbc73a AM |
5121 | /* Read this BFD's local symbols. */ |
5122 | if (isymbuf == NULL) | |
5123 | { | |
5124 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5125 | if (isymbuf == NULL) | |
5126 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5127 | symtab_hdr->sh_info, 0, | |
5128 | NULL, NULL, NULL); | |
5129 | if (isymbuf == 0) | |
5130 | goto error_return; | |
5131 | } | |
5132 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5133 | if (isym->st_shndx == SHN_UNDEF) | |
5134 | continue; /* We can't do anything with undefined symbols. */ | |
5135 | else if (isym->st_shndx == SHN_ABS) | |
5136 | tsec = bfd_abs_section_ptr; | |
5137 | else if (isym->st_shndx == SHN_COMMON) | |
5138 | tsec = bfd_com_section_ptr; | |
5139 | else | |
5140 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7fce784e | 5141 | |
25dbc73a AM |
5142 | toff = isym->st_value; |
5143 | sym_type = ELF_ST_TYPE (isym->st_info); | |
5144 | } | |
5145 | else | |
5146 | { | |
5147 | /* Global symbol handling. */ | |
5148 | unsigned long indx; | |
5149 | struct elf_link_hash_entry *h; | |
7619e7c7 | 5150 | |
25dbc73a AM |
5151 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
5152 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 5153 | |
25dbc73a AM |
5154 | while (h->root.type == bfd_link_hash_indirect |
5155 | || h->root.type == bfd_link_hash_warning) | |
5156 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 5157 | |
a6aa5195 AM |
5158 | tsec = NULL; |
5159 | toff = 0; | |
25dbc73a | 5160 | if (r_type == R_PPC_PLTREL24 |
a6aa5195 | 5161 | && htab->plt != NULL) |
25dbc73a | 5162 | { |
a6aa5195 AM |
5163 | struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend); |
5164 | ||
5165 | if (ent != NULL) | |
d7128ce4 | 5166 | { |
4a3dc543 | 5167 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
5168 | { |
5169 | tsec = htab->glink; | |
5170 | toff = ent->glink_offset; | |
5171 | } | |
5172 | else | |
5173 | { | |
5174 | tsec = htab->plt; | |
5175 | toff = ent->plt.offset; | |
5176 | } | |
d7128ce4 | 5177 | } |
25dbc73a | 5178 | } |
a6aa5195 AM |
5179 | if (tsec != NULL) |
5180 | ; | |
25dbc73a AM |
5181 | else if (h->root.type == bfd_link_hash_defined |
5182 | || h->root.type == bfd_link_hash_defweak) | |
5183 | { | |
5184 | tsec = h->root.u.def.section; | |
5185 | toff = h->root.u.def.value; | |
5186 | } | |
5187 | else | |
5188 | continue; | |
7619e7c7 | 5189 | |
25dbc73a AM |
5190 | sym_type = h->type; |
5191 | } | |
7619e7c7 | 5192 | |
25dbc73a AM |
5193 | /* If the branch and target are in the same section, you have |
5194 | no hope of adding stubs. We'll error out later should the | |
5195 | branch overflow. */ | |
5196 | if (tsec == isec) | |
5197 | continue; | |
5198 | ||
5199 | /* There probably isn't any reason to handle symbols in | |
5200 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
5201 | attribute for a code section, and we are only looking at | |
5202 | branches. However, implement it correctly here as a | |
5203 | reference for other target relax_section functions. */ | |
5204 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
5205 | { | |
5206 | /* At this stage in linking, no SEC_MERGE symbol has been | |
5207 | adjusted, so all references to such symbols need to be | |
5208 | passed through _bfd_merged_section_offset. (Later, in | |
5209 | relocate_section, all SEC_MERGE symbols *except* for | |
5210 | section symbols have been adjusted.) | |
5211 | ||
5212 | gas may reduce relocations against symbols in SEC_MERGE | |
5213 | sections to a relocation against the section symbol when | |
5214 | the original addend was zero. When the reloc is against | |
5215 | a section symbol we should include the addend in the | |
5216 | offset passed to _bfd_merged_section_offset, since the | |
5217 | location of interest is the original symbol. On the | |
5218 | other hand, an access to "sym+addend" where "sym" is not | |
5219 | a section symbol should not include the addend; Such an | |
5220 | access is presumed to be an offset from "sym"; The | |
5221 | location of interest is just "sym". */ | |
5222 | if (sym_type == STT_SECTION) | |
5223 | toff += irel->r_addend; | |
7619e7c7 | 5224 | |
25dbc73a AM |
5225 | toff = _bfd_merged_section_offset (abfd, &tsec, |
5226 | elf_section_data (tsec)->sec_info, | |
5227 | toff); | |
7619e7c7 | 5228 | |
25dbc73a AM |
5229 | if (sym_type != STT_SECTION) |
5230 | toff += irel->r_addend; | |
5231 | } | |
a6aa5195 AM |
5232 | /* PLTREL24 addends are special. */ |
5233 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 5234 | toff += irel->r_addend; |
7619e7c7 | 5235 | |
7de713b9 AM |
5236 | /* Attempted -shared link of non-pic code loses. */ |
5237 | if (tsec->output_section == NULL) | |
5238 | continue; | |
5239 | ||
25dbc73a | 5240 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7619e7c7 | 5241 | |
25dbc73a AM |
5242 | roff = irel->r_offset; |
5243 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7619e7c7 | 5244 | |
25dbc73a AM |
5245 | /* If the branch is in range, no need to do anything. */ |
5246 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) | |
5247 | continue; | |
252b5132 | 5248 | |
25dbc73a AM |
5249 | /* Look for an existing fixup to this address. */ |
5250 | for (f = fixups; f ; f = f->next) | |
5251 | if (f->tsec == tsec && f->toff == toff) | |
5252 | break; | |
5253 | ||
5254 | if (f == NULL) | |
7619e7c7 | 5255 | { |
25dbc73a AM |
5256 | size_t size; |
5257 | unsigned long stub_rtype; | |
252b5132 | 5258 | |
25dbc73a AM |
5259 | val = trampoff - roff; |
5260 | if (val >= max_branch_offset) | |
5261 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
5262 | one. We'll report an error later. */ | |
5263 | continue; | |
252b5132 | 5264 | |
25dbc73a AM |
5265 | if (link_info->shared) |
5266 | { | |
5267 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
5268 | insn_offset = 12; | |
5269 | stub_rtype = R_PPC_RELAX32PC; | |
5270 | } | |
5271 | else | |
5272 | { | |
5273 | size = 4 * ARRAY_SIZE (stub_entry); | |
5274 | insn_offset = 0; | |
5275 | stub_rtype = R_PPC_RELAX32; | |
5276 | } | |
dc810e39 | 5277 | |
25dbc73a AM |
5278 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
5279 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
5280 | abort (); | |
d7128ce4 AM |
5281 | if (tsec == htab->plt |
5282 | || tsec == htab->glink) | |
25dbc73a | 5283 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; |
252b5132 | 5284 | |
25dbc73a AM |
5285 | /* Hijack the old relocation. Since we need two |
5286 | relocations for this use a "composite" reloc. */ | |
5287 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
5288 | stub_rtype); | |
5289 | irel->r_offset = trampoff + insn_offset; | |
252b5132 | 5290 | |
25dbc73a AM |
5291 | /* Record the fixup so we don't do it again this section. */ |
5292 | f = bfd_malloc (sizeof (*f)); | |
5293 | f->next = fixups; | |
5294 | f->tsec = tsec; | |
5295 | f->toff = toff; | |
5296 | f->trampoff = trampoff; | |
5297 | fixups = f; | |
252b5132 | 5298 | |
25dbc73a AM |
5299 | trampoff += size; |
5300 | } | |
5301 | else | |
5302 | { | |
5303 | val = f->trampoff - roff; | |
5304 | if (val >= max_branch_offset) | |
5305 | continue; | |
252b5132 | 5306 | |
25dbc73a AM |
5307 | /* Nop out the reloc, since we're finalizing things here. */ |
5308 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
5309 | } | |
252b5132 | 5310 | |
25dbc73a AM |
5311 | /* Get the section contents. */ |
5312 | if (contents == NULL) | |
5313 | { | |
5314 | /* Get cached copy if it exists. */ | |
5315 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
5316 | contents = elf_section_data (isec)->this_hdr.contents; | |
5317 | else | |
5318 | { | |
5319 | /* Go get them off disk. */ | |
5320 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
5321 | goto error_return; | |
5322 | } | |
5323 | } | |
252b5132 | 5324 | |
25dbc73a AM |
5325 | /* Fix up the existing branch to hit the trampoline. */ |
5326 | hit_addr = contents + roff; | |
5327 | switch (r_type) | |
5328 | { | |
5329 | case R_PPC_REL24: | |
5330 | case R_PPC_LOCAL24PC: | |
5331 | case R_PPC_PLTREL24: | |
5332 | t0 = bfd_get_32 (abfd, hit_addr); | |
5333 | t0 &= ~0x3fffffc; | |
5334 | t0 |= val & 0x3fffffc; | |
5335 | bfd_put_32 (abfd, t0, hit_addr); | |
5336 | break; | |
252b5132 | 5337 | |
25dbc73a AM |
5338 | case R_PPC_REL14: |
5339 | case R_PPC_REL14_BRTAKEN: | |
5340 | case R_PPC_REL14_BRNTAKEN: | |
5341 | t0 = bfd_get_32 (abfd, hit_addr); | |
5342 | t0 &= ~0xfffc; | |
5343 | t0 |= val & 0xfffc; | |
5344 | bfd_put_32 (abfd, t0, hit_addr); | |
5345 | break; | |
5346 | } | |
5347 | } | |
252b5132 | 5348 | |
25dbc73a AM |
5349 | /* Write out the trampolines. */ |
5350 | changed = fixups != NULL; | |
5351 | if (fixups != NULL) | |
5352 | { | |
5353 | const int *stub; | |
5354 | bfd_byte *dest; | |
5355 | bfd_vma val; | |
5356 | int i, size; | |
252b5132 | 5357 | |
25dbc73a AM |
5358 | do |
5359 | { | |
5360 | struct one_fixup *f = fixups; | |
5361 | fixups = fixups->next; | |
5362 | free (f); | |
5363 | } | |
5364 | while (fixups); | |
252b5132 | 5365 | |
25dbc73a AM |
5366 | contents = bfd_realloc (contents, trampoff); |
5367 | if (contents == NULL) | |
5368 | goto error_return; | |
252b5132 | 5369 | |
25dbc73a AM |
5370 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
5371 | /* Branch around the trampolines. */ | |
5372 | val = trampoff - isec->size + 0x48000000; | |
5373 | dest = contents + isec->size; | |
5374 | isec->size = trampoff; | |
5375 | bfd_put_32 (abfd, val, dest); | |
5376 | dest += 4; | |
252b5132 | 5377 | |
25dbc73a AM |
5378 | if (link_info->shared) |
5379 | { | |
5380 | stub = shared_stub_entry; | |
5381 | size = ARRAY_SIZE (shared_stub_entry); | |
5382 | } | |
5383 | else | |
5384 | { | |
5385 | stub = stub_entry; | |
5386 | size = ARRAY_SIZE (stub_entry); | |
5387 | } | |
252b5132 | 5388 | |
25dbc73a AM |
5389 | i = 0; |
5390 | while (dest < contents + trampoff) | |
252b5132 | 5391 | { |
25dbc73a AM |
5392 | bfd_put_32 (abfd, stub[i], dest); |
5393 | i++; | |
5394 | if (i == size) | |
5395 | i = 0; | |
5396 | dest += 4; | |
252b5132 | 5397 | } |
25dbc73a | 5398 | BFD_ASSERT (i == 0); |
252b5132 RH |
5399 | } |
5400 | ||
25dbc73a AM |
5401 | if (isymbuf != NULL |
5402 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 5403 | { |
25dbc73a AM |
5404 | if (! link_info->keep_memory) |
5405 | free (isymbuf); | |
252b5132 | 5406 | else |
25dbc73a AM |
5407 | { |
5408 | /* Cache the symbols for elf_link_input_bfd. */ | |
5409 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
5410 | } | |
252b5132 RH |
5411 | } |
5412 | ||
25dbc73a AM |
5413 | if (contents != NULL |
5414 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5415 | { | |
5416 | if (!changed && !link_info->keep_memory) | |
5417 | free (contents); | |
5418 | else | |
5419 | { | |
5420 | /* Cache the section contents for elf_link_input_bfd. */ | |
5421 | elf_section_data (isec)->this_hdr.contents = contents; | |
5422 | } | |
5423 | } | |
252b5132 | 5424 | |
25dbc73a AM |
5425 | if (elf_section_data (isec)->relocs != internal_relocs) |
5426 | { | |
5427 | if (!changed) | |
5428 | free (internal_relocs); | |
5429 | else | |
5430 | elf_section_data (isec)->relocs = internal_relocs; | |
5431 | } | |
252b5132 | 5432 | |
25dbc73a | 5433 | *again = changed; |
b34976b6 | 5434 | return TRUE; |
25dbc73a AM |
5435 | |
5436 | error_return: | |
5437 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
5438 | free (isymbuf); | |
5439 | if (contents != NULL | |
5440 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5441 | free (contents); | |
5442 | if (internal_relocs != NULL | |
5443 | && elf_section_data (isec)->relocs != internal_relocs) | |
5444 | free (internal_relocs); | |
5445 | return FALSE; | |
252b5132 | 5446 | } |
252b5132 | 5447 | \f |
8a696751 AM |
5448 | /* What to do when ld finds relocations against symbols defined in |
5449 | discarded sections. */ | |
5450 | ||
5451 | static unsigned int | |
5452 | ppc_elf_action_discarded (asection *sec) | |
5453 | { | |
5454 | if (strcmp (".fixup", sec->name) == 0) | |
5455 | return 0; | |
5456 | ||
5457 | if (strcmp (".got2", sec->name) == 0) | |
5458 | return 0; | |
5459 | ||
5460 | return _bfd_elf_default_action_discarded (sec); | |
5461 | } | |
c9a2f333 | 5462 | \f |
25dbc73a | 5463 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 5464 | |
25dbc73a | 5465 | static bfd_vma |
76750a2f | 5466 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
5467 | elf_linker_section_t *lsect, |
5468 | struct elf_link_hash_entry *h, | |
5469 | bfd_vma relocation, | |
2bb04cf2 | 5470 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
5471 | { |
5472 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 5473 | |
25dbc73a | 5474 | BFD_ASSERT (lsect != NULL); |
252b5132 | 5475 | |
25dbc73a | 5476 | if (h != NULL) |
252b5132 | 5477 | { |
25dbc73a AM |
5478 | /* Handle global symbol. */ |
5479 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 5480 | |
25dbc73a | 5481 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
5482 | BFD_ASSERT (eh->elf.def_regular); |
5483 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
5484 | } |
5485 | else | |
5486 | { | |
5487 | /* Handle local symbol. */ | |
5488 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 5489 | |
25dbc73a | 5490 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
5491 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
5492 | } | |
252b5132 | 5493 | |
76750a2f AM |
5494 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
5495 | rel->r_addend, | |
5496 | lsect); | |
5497 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 5498 | |
76750a2f AM |
5499 | /* Offset will always be a multiple of four, so use the bottom bit |
5500 | as a "written" flag. */ | |
5501 | if ((linker_section_ptr->offset & 1) == 0) | |
5502 | { | |
5503 | bfd_put_32 (lsect->section->owner, | |
5504 | relocation + linker_section_ptr->addend, | |
5505 | lsect->section->contents + linker_section_ptr->offset); | |
5506 | linker_section_ptr->offset += 1; | |
252b5132 RH |
5507 | } |
5508 | ||
25dbc73a | 5509 | relocation = (lsect->section->output_offset |
76750a2f | 5510 | + linker_section_ptr->offset - 1 |
c9a2f333 | 5511 | - 0x8000); |
252b5132 | 5512 | |
25dbc73a AM |
5513 | #ifdef DEBUG |
5514 | fprintf (stderr, | |
5515 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
5516 | lsect->name, (long) relocation, (long) relocation); | |
5517 | #endif | |
252b5132 | 5518 | |
25dbc73a AM |
5519 | /* Subtract out the addend, because it will get added back in by the normal |
5520 | processing. */ | |
5521 | return relocation - linker_section_ptr->addend; | |
252b5132 | 5522 | } |
25dbc73a | 5523 | |
252b5132 RH |
5524 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
5525 | to handle the relocations for a section. | |
5526 | ||
5527 | The relocs are always passed as Rela structures; if the section | |
5528 | actually uses Rel structures, the r_addend field will always be | |
5529 | zero. | |
5530 | ||
5531 | This function is responsible for adjust the section contents as | |
5532 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 5533 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
5534 | necessary. |
5535 | ||
5536 | This function does not have to worry about setting the reloc | |
5537 | address or the reloc symbol index. | |
5538 | ||
5539 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
5540 | ||
5541 | LOCAL_SECTIONS is an array giving the section in the input file | |
5542 | corresponding to the st_shndx field of each local symbol. | |
5543 | ||
5544 | The global hash table entry for the global symbols can be found | |
5545 | via elf_sym_hashes (input_bfd). | |
5546 | ||
1049f94e | 5547 | When generating relocatable output, this function must handle |
252b5132 RH |
5548 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
5549 | going to be the section symbol corresponding to the output | |
5550 | section, which means that the addend must be adjusted | |
5551 | accordingly. */ | |
5552 | ||
b34976b6 | 5553 | static bfd_boolean |
55fd94b0 AM |
5554 | ppc_elf_relocate_section (bfd *output_bfd, |
5555 | struct bfd_link_info *info, | |
5556 | bfd *input_bfd, | |
5557 | asection *input_section, | |
5558 | bfd_byte *contents, | |
5559 | Elf_Internal_Rela *relocs, | |
5560 | Elf_Internal_Sym *local_syms, | |
5561 | asection **local_sections) | |
252b5132 | 5562 | { |
7619e7c7 AM |
5563 | Elf_Internal_Shdr *symtab_hdr; |
5564 | struct elf_link_hash_entry **sym_hashes; | |
5565 | struct ppc_elf_link_hash_table *htab; | |
5566 | Elf_Internal_Rela *rel; | |
5567 | Elf_Internal_Rela *relend; | |
5568 | Elf_Internal_Rela outrel; | |
5569 | bfd_byte *loc; | |
a6aa5195 | 5570 | asection *got2, *sreloc = NULL; |
252b5132 | 5571 | bfd_vma *local_got_offsets; |
b34976b6 | 5572 | bfd_boolean ret = TRUE; |
4fe5ca5b | 5573 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
b34976b6 | 5574 | |
252b5132 | 5575 | #ifdef DEBUG |
d003868e AM |
5576 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
5577 | "%ld relocations%s", | |
5578 | input_bfd, input_section, | |
5579 | (long) input_section->reloc_count, | |
5580 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
5581 | #endif |
5582 | ||
a6aa5195 AM |
5583 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
5584 | ||
e47cd125 | 5585 | /* Initialize howto table if not already done. */ |
8da6118f | 5586 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
5587 | ppc_elf_howto_init (); |
5588 | ||
7619e7c7 | 5589 | htab = ppc_elf_hash_table (info); |
252b5132 | 5590 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
5591 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5592 | sym_hashes = elf_sym_hashes (input_bfd); | |
5593 | rel = relocs; | |
5594 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
5595 | for (; rel < relend; rel++) |
5596 | { | |
7619e7c7 AM |
5597 | enum elf_ppc_reloc_type r_type; |
5598 | bfd_vma addend; | |
5599 | bfd_reloc_status_type r; | |
5600 | Elf_Internal_Sym *sym; | |
5601 | asection *sec; | |
5602 | struct elf_link_hash_entry *h; | |
5603 | const char *sym_name; | |
252b5132 RH |
5604 | reloc_howto_type *howto; |
5605 | unsigned long r_symndx; | |
5606 | bfd_vma relocation; | |
7619e7c7 | 5607 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
5608 | bfd_boolean unresolved_reloc; |
5609 | bfd_boolean warned; | |
5610 | unsigned int tls_type, tls_mask, tls_gd; | |
5611 | ||
55fd94b0 AM |
5612 | r_type = ELF32_R_TYPE (rel->r_info); |
5613 | sym = NULL; | |
5614 | sec = NULL; | |
5615 | h = NULL; | |
7619e7c7 AM |
5616 | unresolved_reloc = FALSE; |
5617 | warned = FALSE; | |
252b5132 | 5618 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 5619 | |
252b5132 RH |
5620 | if (r_symndx < symtab_hdr->sh_info) |
5621 | { | |
5622 | sym = local_syms + r_symndx; | |
5623 | sec = local_sections[r_symndx]; | |
26c61ae5 | 5624 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 5625 | |
8517fae7 | 5626 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
5627 | } |
5628 | else | |
5629 | { | |
b2a8e766 AM |
5630 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
5631 | r_symndx, symtab_hdr, sym_hashes, | |
5632 | h, sec, relocation, | |
5633 | unresolved_reloc, warned); | |
9abc968f | 5634 | |
252b5132 | 5635 | sym_name = h->root.root.string; |
7619e7c7 AM |
5636 | } |
5637 | ||
ab96bf03 AM |
5638 | if (sec != NULL && elf_discarded_section (sec)) |
5639 | { | |
5640 | /* For relocs against symbols from removed linkonce sections, | |
5641 | or sections discarded by a linker script, we just want the | |
5642 | section contents zeroed. Avoid any special processing. */ | |
5643 | howto = NULL; | |
5644 | if (r_type < R_PPC_max) | |
5645 | howto = ppc_elf_howto_table[r_type]; | |
5646 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
5647 | rel->r_info = 0; | |
5648 | rel->r_addend = 0; | |
5649 | continue; | |
5650 | } | |
5651 | ||
5652 | if (info->relocatable) | |
5653 | { | |
5654 | if (got2 != NULL | |
5655 | && r_type == R_PPC_PLTREL24 | |
5656 | && rel->r_addend >= 32768) | |
5657 | { | |
5658 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
5659 | addend specifies the GOT pointer offset within .got2. */ | |
5660 | rel->r_addend += got2->output_offset; | |
5661 | } | |
5662 | continue; | |
5663 | } | |
5664 | ||
7619e7c7 AM |
5665 | /* TLS optimizations. Replace instruction sequences and relocs |
5666 | based on information we collected in tls_optimize. We edit | |
5667 | RELOCS so that --emit-relocs will output something sensible | |
5668 | for the final instruction stream. */ | |
5669 | tls_mask = 0; | |
5670 | tls_gd = 0; | |
5671 | if (IS_PPC_TLS_RELOC (r_type)) | |
5672 | { | |
5673 | if (h != NULL) | |
5674 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
5675 | else if (local_got_offsets != NULL) | |
5676 | { | |
5677 | char *lgot_masks; | |
5678 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
5679 | tls_mask = lgot_masks[r_symndx]; | |
5680 | } | |
5681 | } | |
5682 | ||
5683 | /* Ensure reloc mapping code below stays sane. */ | |
5684 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
5685 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
5686 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
5687 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
5688 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
5689 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
5690 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
5691 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
5692 | abort (); | |
5693 | switch (r_type) | |
5694 | { | |
5695 | default: | |
5696 | break; | |
5697 | ||
5698 | case R_PPC_GOT_TPREL16: | |
5699 | case R_PPC_GOT_TPREL16_LO: | |
5700 | if (tls_mask != 0 | |
5701 | && (tls_mask & TLS_TPREL) == 0) | |
5702 | { | |
5703 | bfd_vma insn; | |
4fe5ca5b | 5704 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5705 | insn &= 31 << 21; |
5706 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4fe5ca5b | 5707 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5708 | r_type = R_PPC_TPREL16_HA; |
5709 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5710 | } | |
5711 | break; | |
5712 | ||
5713 | case R_PPC_TLS: | |
5714 | if (tls_mask != 0 | |
5715 | && (tls_mask & TLS_TPREL) == 0) | |
5716 | { | |
5717 | bfd_vma insn, rtra; | |
5718 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5719 | if ((insn & ((31 << 26) | (31 << 11))) | |
5720 | == ((31 << 26) | (2 << 11))) | |
5721 | rtra = insn & ((1 << 26) - (1 << 16)); | |
5722 | else if ((insn & ((31 << 26) | (31 << 16))) | |
5723 | == ((31 << 26) | (2 << 16))) | |
5724 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
5725 | else | |
5726 | abort (); | |
5727 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
5728 | /* add -> addi. */ | |
5729 | insn = 14 << 26; | |
5730 | else if ((insn & (31 << 1)) == 23 << 1 | |
5731 | && ((insn & (31 << 6)) < 14 << 6 | |
5732 | || ((insn & (31 << 6)) >= 16 << 6 | |
5733 | && (insn & (31 << 6)) < 24 << 6))) | |
5734 | /* load and store indexed -> dform. */ | |
5735 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
5736 | else if ((insn & (31 << 1)) == 21 << 1 | |
5737 | && (insn & (0x1a << 6)) == 0) | |
5738 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
5739 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
5740 | | ((insn >> 6) & 1)); | |
5741 | else if ((insn & (31 << 1)) == 21 << 1 | |
5742 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
5743 | /* lwax -> lwa. */ | |
5744 | insn = (58 << 26) | 2; | |
5745 | else | |
5746 | abort (); | |
5747 | insn |= rtra; | |
5748 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5749 | r_type = R_PPC_TPREL16_LO; | |
5750 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 5751 | |
7619e7c7 | 5752 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
5753 | PPC_TPREL16_LO which is at low-order half-word. */ |
5754 | rel->r_offset += d_offset; | |
7619e7c7 AM |
5755 | } |
5756 | break; | |
5757 | ||
5758 | case R_PPC_GOT_TLSGD16_HI: | |
5759 | case R_PPC_GOT_TLSGD16_HA: | |
5760 | tls_gd = TLS_TPRELGD; | |
5761 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5762 | goto tls_gdld_hi; | |
5763 | break; | |
5764 | ||
5765 | case R_PPC_GOT_TLSLD16_HI: | |
5766 | case R_PPC_GOT_TLSLD16_HA: | |
5767 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5768 | { | |
5769 | tls_gdld_hi: | |
5770 | if ((tls_mask & tls_gd) != 0) | |
5771 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
5772 | + R_PPC_GOT_TPREL16); | |
5773 | else | |
5774 | { | |
5775 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4fe5ca5b | 5776 | rel->r_offset -= d_offset; |
7619e7c7 AM |
5777 | r_type = R_PPC_NONE; |
5778 | } | |
5779 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5780 | } | |
5781 | break; | |
5782 | ||
5783 | case R_PPC_GOT_TLSGD16: | |
5784 | case R_PPC_GOT_TLSGD16_LO: | |
5785 | tls_gd = TLS_TPRELGD; | |
5786 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5787 | goto tls_get_addr_check; | |
5788 | break; | |
5789 | ||
5790 | case R_PPC_GOT_TLSLD16: | |
5791 | case R_PPC_GOT_TLSLD16_LO: | |
5792 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5793 | { | |
5794 | tls_get_addr_check: | |
5795 | if (rel + 1 < relend) | |
5796 | { | |
5797 | enum elf_ppc_reloc_type r_type2; | |
5798 | unsigned long r_symndx2; | |
5799 | struct elf_link_hash_entry *h2; | |
87d243f1 | 5800 | bfd_vma insn1, insn2; |
7619e7c7 AM |
5801 | bfd_vma offset; |
5802 | ||
5803 | /* The next instruction should be a call to | |
5804 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 5805 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
5806 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
5807 | if (r_symndx2 < symtab_hdr->sh_info | |
5808 | || (r_type2 != R_PPC_REL14 | |
5809 | && r_type2 != R_PPC_REL14_BRTAKEN | |
5810 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
5811 | && r_type2 != R_PPC_REL24 | |
5812 | && r_type2 != R_PPC_PLTREL24)) | |
5813 | break; | |
5814 | ||
5815 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
5816 | while (h2->root.type == bfd_link_hash_indirect | |
5817 | || h2->root.type == bfd_link_hash_warning) | |
5818 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
5819 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
5820 | break; | |
5821 | ||
5822 | /* OK, it checks out. Replace the call. */ | |
5823 | offset = rel[1].r_offset; | |
5824 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 5825 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5826 | if ((tls_mask & tls_gd) != 0) |
5827 | { | |
5828 | /* IE */ | |
5829 | insn1 &= (1 << 26) - 1; | |
5830 | insn1 |= 32 << 26; /* lwz */ | |
5831 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
5832 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
e1710606 | 5833 | rel[1].r_addend = 0; |
7619e7c7 AM |
5834 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
5835 | + R_PPC_GOT_TPREL16); | |
5836 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5837 | } | |
5838 | else | |
5839 | { | |
5840 | /* LE */ | |
5841 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
5842 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
5843 | if (tls_gd == 0) | |
5844 | { | |
5845 | /* Was an LD reloc. */ | |
5846 | r_symndx = 0; | |
e1918d23 | 5847 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5848 | } |
5849 | r_type = R_PPC_TPREL16_HA; | |
5850 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5851 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
5852 | R_PPC_TPREL16_LO); | |
4fe5ca5b | 5853 | rel[1].r_offset += d_offset; |
e1710606 | 5854 | rel[1].r_addend = rel->r_addend; |
7619e7c7 | 5855 | } |
4fe5ca5b | 5856 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
7619e7c7 | 5857 | bfd_put_32 (output_bfd, insn2, contents + offset); |
7619e7c7 AM |
5858 | if (tls_gd == 0) |
5859 | { | |
5860 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 5861 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
5862 | rel--; |
5863 | continue; | |
5864 | } | |
5865 | } | |
252b5132 | 5866 | } |
7619e7c7 AM |
5867 | break; |
5868 | } | |
5869 | ||
5870 | /* Handle other relocations that tweak non-addend part of insn. */ | |
5871 | branch_bit = 0; | |
5872 | switch (r_type) | |
5873 | { | |
5874 | default: | |
5875 | break; | |
5876 | ||
5877 | /* Branch taken prediction relocations. */ | |
5878 | case R_PPC_ADDR14_BRTAKEN: | |
5879 | case R_PPC_REL14_BRTAKEN: | |
5880 | branch_bit = BRANCH_PREDICT_BIT; | |
5881 | /* Fall thru */ | |
5882 | ||
4cc11e76 | 5883 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
5884 | case R_PPC_ADDR14_BRNTAKEN: |
5885 | case R_PPC_REL14_BRNTAKEN: | |
5886 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5887 | insn &= ~BRANCH_PREDICT_BIT; | |
5888 | insn |= branch_bit; | |
5889 | ||
5890 | from = (rel->r_offset | |
5891 | + input_section->output_offset | |
5892 | + input_section->output_section->vma); | |
5893 | ||
5894 | /* Invert 'y' bit if not the default. */ | |
5895 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
5896 | insn ^= BRANCH_PREDICT_BIT; | |
5897 | ||
5898 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5899 | break; | |
252b5132 RH |
5900 | } |
5901 | ||
7619e7c7 AM |
5902 | addend = rel->r_addend; |
5903 | tls_type = 0; | |
5904 | howto = NULL; | |
55fd94b0 AM |
5905 | if (r_type < R_PPC_max) |
5906 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 5907 | switch (r_type) |
252b5132 RH |
5908 | { |
5909 | default: | |
7619e7c7 | 5910 | (*_bfd_error_handler) |
d003868e AM |
5911 | (_("%B: unknown relocation type %d for symbol %s"), |
5912 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
5913 | |
5914 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5915 | ret = FALSE; |
252b5132 RH |
5916 | continue; |
5917 | ||
7619e7c7 AM |
5918 | case R_PPC_NONE: |
5919 | case R_PPC_TLS: | |
5920 | case R_PPC_EMB_MRKREF: | |
5921 | case R_PPC_GNU_VTINHERIT: | |
5922 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
5923 | continue; |
5924 | ||
7619e7c7 AM |
5925 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
5926 | address in the GOT as relocation value instead of the | |
5927 | symbol's value itself. Also, create a GOT entry for the | |
5928 | symbol and put the symbol value there. */ | |
5929 | case R_PPC_GOT_TLSGD16: | |
5930 | case R_PPC_GOT_TLSGD16_LO: | |
5931 | case R_PPC_GOT_TLSGD16_HI: | |
5932 | case R_PPC_GOT_TLSGD16_HA: | |
5933 | tls_type = TLS_TLS | TLS_GD; | |
5934 | goto dogot; | |
5935 | ||
5936 | case R_PPC_GOT_TLSLD16: | |
5937 | case R_PPC_GOT_TLSLD16_LO: | |
5938 | case R_PPC_GOT_TLSLD16_HI: | |
5939 | case R_PPC_GOT_TLSLD16_HA: | |
5940 | tls_type = TLS_TLS | TLS_LD; | |
5941 | goto dogot; | |
5942 | ||
5943 | case R_PPC_GOT_TPREL16: | |
5944 | case R_PPC_GOT_TPREL16_LO: | |
5945 | case R_PPC_GOT_TPREL16_HI: | |
5946 | case R_PPC_GOT_TPREL16_HA: | |
5947 | tls_type = TLS_TLS | TLS_TPREL; | |
5948 | goto dogot; | |
5949 | ||
5950 | case R_PPC_GOT_DTPREL16: | |
5951 | case R_PPC_GOT_DTPREL16_LO: | |
5952 | case R_PPC_GOT_DTPREL16_HI: | |
5953 | case R_PPC_GOT_DTPREL16_HA: | |
5954 | tls_type = TLS_TLS | TLS_DTPREL; | |
5955 | goto dogot; | |
5956 | ||
5957 | case R_PPC_GOT16: | |
5958 | case R_PPC_GOT16_LO: | |
5959 | case R_PPC_GOT16_HI: | |
5960 | case R_PPC_GOT16_HA: | |
5961 | dogot: | |
5962 | { | |
5963 | /* Relocation is to the entry for this symbol in the global | |
5964 | offset table. */ | |
5965 | bfd_vma off; | |
5966 | bfd_vma *offp; | |
5967 | unsigned long indx; | |
5968 | ||
5969 | if (htab->got == NULL) | |
5970 | abort (); | |
5971 | ||
5972 | indx = 0; | |
5973 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 5974 | && (h == NULL |
f5385ebf | 5975 | || !h->def_dynamic)) |
7619e7c7 AM |
5976 | offp = &htab->tlsld_got.offset; |
5977 | else if (h != NULL) | |
5978 | { | |
5979 | bfd_boolean dyn; | |
5980 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 5981 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
5982 | || (info->shared |
5983 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
5984 | /* This is actually a static link, or it is a | |
5985 | -Bsymbolic link and the symbol is defined | |
5986 | locally, or the symbol was forced to be local | |
5987 | because of a version file. */ | |
5988 | ; | |
5989 | else | |
5990 | { | |
5991 | indx = h->dynindx; | |
5992 | unresolved_reloc = FALSE; | |
5993 | } | |
5994 | offp = &h->got.offset; | |
5995 | } | |
5996 | else | |
5997 | { | |
5998 | if (local_got_offsets == NULL) | |
5999 | abort (); | |
6000 | offp = &local_got_offsets[r_symndx]; | |
6001 | } | |
6002 | ||
6003 | /* The offset must always be a multiple of 4. We use the | |
6004 | least significant bit to record whether we have already | |
6005 | processed this entry. */ | |
6006 | off = *offp; | |
6007 | if ((off & 1) != 0) | |
6008 | off &= ~1; | |
6009 | else | |
6010 | { | |
70bccea4 AM |
6011 | unsigned int tls_m = (tls_mask |
6012 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
6013 | | TLS_TPREL | TLS_TPRELGD)); | |
6014 | ||
6015 | if (offp == &htab->tlsld_got.offset) | |
6016 | tls_m = TLS_LD; | |
6017 | else if (h == NULL | |
f5385ebf | 6018 | || !h->def_dynamic) |
70bccea4 AM |
6019 | tls_m &= ~TLS_LD; |
6020 | ||
6021 | /* We might have multiple got entries for this sym. | |
6022 | Initialize them all. */ | |
6023 | do | |
7619e7c7 | 6024 | { |
70bccea4 AM |
6025 | int tls_ty = 0; |
6026 | ||
6027 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 6028 | { |
70bccea4 AM |
6029 | tls_ty = TLS_TLS | TLS_LD; |
6030 | tls_m &= ~TLS_LD; | |
6031 | } | |
6032 | else if ((tls_m & TLS_GD) != 0) | |
6033 | { | |
6034 | tls_ty = TLS_TLS | TLS_GD; | |
6035 | tls_m &= ~TLS_GD; | |
6036 | } | |
6037 | else if ((tls_m & TLS_DTPREL) != 0) | |
6038 | { | |
6039 | tls_ty = TLS_TLS | TLS_DTPREL; | |
6040 | tls_m &= ~TLS_DTPREL; | |
6041 | } | |
6042 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6043 | { | |
6044 | tls_ty = TLS_TLS | TLS_TPREL; | |
6045 | tls_m = 0; | |
7619e7c7 | 6046 | } |
7619e7c7 | 6047 | |
70bccea4 | 6048 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
6049 | if ((info->shared || indx != 0) |
6050 | && (h == NULL | |
6051 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6052 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 6053 | { |
70bccea4 AM |
6054 | outrel.r_offset = (htab->got->output_section->vma |
6055 | + htab->got->output_offset | |
6056 | + off); | |
e515b051 | 6057 | outrel.r_addend = 0; |
70bccea4 AM |
6058 | if (tls_ty & (TLS_LD | TLS_GD)) |
6059 | { | |
6060 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
6061 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6062 | { | |
6063 | loc = htab->relgot->contents; | |
6064 | loc += (htab->relgot->reloc_count++ | |
6065 | * sizeof (Elf32_External_Rela)); | |
6066 | bfd_elf32_swap_reloca_out (output_bfd, | |
6067 | &outrel, loc); | |
e515b051 | 6068 | outrel.r_offset += 4; |
70bccea4 AM |
6069 | outrel.r_info |
6070 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
6071 | } |
6072 | } | |
6073 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
6074 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
6075 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
6076 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
6077 | else if (indx == 0) | |
6078 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
6079 | else | |
6080 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 6081 | if (indx == 0) |
e515b051 AM |
6082 | { |
6083 | outrel.r_addend += relocation; | |
6084 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 6085 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 6086 | } |
70bccea4 AM |
6087 | loc = htab->relgot->contents; |
6088 | loc += (htab->relgot->reloc_count++ | |
6089 | * sizeof (Elf32_External_Rela)); | |
6090 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
6091 | } |
6092 | ||
70bccea4 AM |
6093 | /* Init the .got section contents if we're not |
6094 | emitting a reloc. */ | |
6095 | else | |
7619e7c7 | 6096 | { |
70bccea4 AM |
6097 | bfd_vma value = relocation; |
6098 | ||
7b609f53 AM |
6099 | if (tls_ty == (TLS_TLS | TLS_LD)) |
6100 | value = 1; | |
6101 | else if (tls_ty != 0) | |
70bccea4 | 6102 | { |
e1918d23 | 6103 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 6104 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 6105 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 6106 | |
7b609f53 AM |
6107 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6108 | { | |
6109 | bfd_put_32 (output_bfd, value, | |
6110 | htab->got->contents + off + 4); | |
6111 | value = 1; | |
6112 | } | |
70bccea4 | 6113 | } |
70bccea4 AM |
6114 | bfd_put_32 (output_bfd, value, |
6115 | htab->got->contents + off); | |
7619e7c7 | 6116 | } |
70bccea4 AM |
6117 | |
6118 | off += 4; | |
6119 | if (tls_ty & (TLS_LD | TLS_GD)) | |
6120 | off += 4; | |
7619e7c7 | 6121 | } |
70bccea4 AM |
6122 | while (tls_m != 0); |
6123 | ||
6124 | off = *offp; | |
6125 | *offp = off | 1; | |
7619e7c7 AM |
6126 | } |
6127 | ||
6128 | if (off >= (bfd_vma) -2) | |
6129 | abort (); | |
6130 | ||
70bccea4 AM |
6131 | if ((tls_type & TLS_TLS) != 0) |
6132 | { | |
6133 | if (tls_type != (TLS_TLS | TLS_LD)) | |
6134 | { | |
6135 | if ((tls_mask & TLS_LD) != 0 | |
6136 | && !(h == NULL | |
f5385ebf | 6137 | || !h->def_dynamic)) |
70bccea4 AM |
6138 | off += 8; |
6139 | if (tls_type != (TLS_TLS | TLS_GD)) | |
6140 | { | |
6141 | if ((tls_mask & TLS_GD) != 0) | |
6142 | off += 8; | |
6143 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
6144 | { | |
6145 | if ((tls_mask & TLS_DTPREL) != 0) | |
6146 | off += 4; | |
6147 | } | |
6148 | } | |
6149 | } | |
6150 | } | |
6151 | ||
3b36f7e6 AM |
6152 | relocation = htab->got->output_offset + off; |
6153 | relocation -= htab->elf.hgot->root.u.def.value; | |
7619e7c7 AM |
6154 | |
6155 | /* Addends on got relocations don't make much sense. | |
6156 | x+off@got is actually x@got+off, and since the got is | |
6157 | generated by a hash table traversal, the value in the | |
6158 | got at entry m+n bears little relation to the entry m. */ | |
6159 | if (addend != 0) | |
6160 | (*_bfd_error_handler) | |
d003868e AM |
6161 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
6162 | input_bfd, | |
6163 | input_section, | |
7619e7c7 | 6164 | (long) rel->r_offset, |
7b609f53 | 6165 | howto->name, |
7619e7c7 AM |
6166 | sym_name); |
6167 | } | |
70bccea4 | 6168 | break; |
7619e7c7 | 6169 | |
252b5132 | 6170 | /* Relocations that need no special processing. */ |
7619e7c7 | 6171 | case R_PPC_LOCAL24PC: |
252b5132 RH |
6172 | /* It makes no sense to point a local relocation |
6173 | at a symbol not in this object. */ | |
7b609f53 | 6174 | if (unresolved_reloc) |
252b5132 | 6175 | { |
464e1740 ILT |
6176 | if (! (*info->callbacks->undefined_symbol) (info, |
6177 | h->root.root.string, | |
6178 | input_bfd, | |
6179 | input_section, | |
5cc7c785 | 6180 | rel->r_offset, |
b34976b6 AM |
6181 | TRUE)) |
6182 | return FALSE; | |
252b5132 RH |
6183 | continue; |
6184 | } | |
6185 | break; | |
6186 | ||
7619e7c7 AM |
6187 | case R_PPC_DTPREL16: |
6188 | case R_PPC_DTPREL16_LO: | |
6189 | case R_PPC_DTPREL16_HI: | |
6190 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 6191 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6192 | break; |
6193 | ||
70bccea4 AM |
6194 | /* Relocations that may need to be propagated if this is a shared |
6195 | object. */ | |
7619e7c7 AM |
6196 | case R_PPC_TPREL16: |
6197 | case R_PPC_TPREL16_LO: | |
6198 | case R_PPC_TPREL16_HI: | |
6199 | case R_PPC_TPREL16_HA: | |
e1918d23 | 6200 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6201 | /* The TPREL16 relocs shouldn't really be used in shared |
6202 | libs as they will result in DT_TEXTREL being set, but | |
6203 | support them anyway. */ | |
6204 | goto dodyn; | |
6205 | ||
6206 | case R_PPC_TPREL32: | |
e1918d23 | 6207 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6208 | goto dodyn; |
6209 | ||
6210 | case R_PPC_DTPREL32: | |
e1918d23 | 6211 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6212 | goto dodyn; |
6213 | ||
e515b051 AM |
6214 | case R_PPC_DTPMOD32: |
6215 | relocation = 1; | |
6216 | addend = 0; | |
6217 | goto dodyn; | |
6218 | ||
d7128ce4 AM |
6219 | case R_PPC_REL16: |
6220 | case R_PPC_REL16_LO: | |
6221 | case R_PPC_REL16_HI: | |
6222 | case R_PPC_REL16_HA: | |
6223 | break; | |
6224 | ||
7619e7c7 AM |
6225 | case R_PPC_REL24: |
6226 | case R_PPC_REL32: | |
6227 | case R_PPC_REL14: | |
6228 | case R_PPC_REL14_BRTAKEN: | |
6229 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
6230 | /* If these relocations are not to a named symbol, they can be |
6231 | handled right here, no need to bother the dynamic linker. */ | |
f6c52c13 | 6232 | if (SYMBOL_REFERENCES_LOCAL (info, h) |
3b36f7e6 | 6233 | || h == htab->elf.hgot) |
252b5132 | 6234 | break; |
70bccea4 | 6235 | /* fall through */ |
252b5132 | 6236 | |
70bccea4 AM |
6237 | /* Relocations that always need to be propagated if this is a shared |
6238 | object. */ | |
7619e7c7 AM |
6239 | case R_PPC_ADDR32: |
6240 | case R_PPC_ADDR24: | |
6241 | case R_PPC_ADDR16: | |
6242 | case R_PPC_ADDR16_LO: | |
6243 | case R_PPC_ADDR16_HI: | |
6244 | case R_PPC_ADDR16_HA: | |
6245 | case R_PPC_ADDR14: | |
6246 | case R_PPC_ADDR14_BRTAKEN: | |
6247 | case R_PPC_ADDR14_BRNTAKEN: | |
6248 | case R_PPC_UADDR32: | |
6249 | case R_PPC_UADDR16: | |
7619e7c7 | 6250 | dodyn: |
c87b5a93 AM |
6251 | if ((input_section->flags & SEC_ALLOC) == 0) |
6252 | break; | |
6253 | /* Fall thru. */ | |
6254 | ||
ee05f2fe | 6255 | if ((info->shared |
4e795f50 AM |
6256 | && (h == NULL |
6257 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6258 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe | 6259 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 6260 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
6261 | || (ELIMINATE_COPY_RELOCS |
6262 | && !info->shared | |
ee05f2fe AM |
6263 | && h != NULL |
6264 | && h->dynindx != -1 | |
f5385ebf AM |
6265 | && !h->non_got_ref |
6266 | && h->def_dynamic | |
6267 | && !h->def_regular)) | |
252b5132 | 6268 | { |
0bb2d96a | 6269 | int skip; |
252b5132 RH |
6270 | |
6271 | #ifdef DEBUG | |
55fd94b0 AM |
6272 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
6273 | "create relocation for %s\n", | |
70bccea4 AM |
6274 | (h && h->root.root.string |
6275 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
6276 | #endif |
6277 | ||
6278 | /* When generating a shared object, these relocations | |
70bccea4 AM |
6279 | are copied into the output file to be resolved at run |
6280 | time. */ | |
252b5132 RH |
6281 | if (sreloc == NULL) |
6282 | { | |
6283 | const char *name; | |
6284 | ||
6285 | name = (bfd_elf_string_from_elf_section | |
6286 | (input_bfd, | |
6287 | elf_elfheader (input_bfd)->e_shstrndx, | |
6288 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
6289 | if (name == NULL) | |
b34976b6 | 6290 | return FALSE; |
252b5132 | 6291 | |
0112cd26 | 6292 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
252b5132 RH |
6293 | && strcmp (bfd_get_section_name (input_bfd, |
6294 | input_section), | |
6295 | name + 5) == 0); | |
6296 | ||
7619e7c7 | 6297 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
6298 | BFD_ASSERT (sreloc != NULL); |
6299 | } | |
6300 | ||
0bb2d96a | 6301 | skip = 0; |
252b5132 | 6302 | |
c629eae0 JJ |
6303 | outrel.r_offset = |
6304 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6305 | rel->r_offset); | |
0bb2d96a JJ |
6306 | if (outrel.r_offset == (bfd_vma) -1 |
6307 | || outrel.r_offset == (bfd_vma) -2) | |
6308 | skip = (int) outrel.r_offset; | |
252b5132 RH |
6309 | outrel.r_offset += (input_section->output_section->vma |
6310 | + input_section->output_offset); | |
6311 | ||
6312 | if (skip) | |
6313 | memset (&outrel, 0, sizeof outrel); | |
f6c52c13 | 6314 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 6315 | { |
7619e7c7 | 6316 | unresolved_reloc = FALSE; |
252b5132 RH |
6317 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
6318 | outrel.r_addend = rel->r_addend; | |
6319 | } | |
6320 | else | |
6321 | { | |
47388f4c AM |
6322 | outrel.r_addend = relocation + rel->r_addend; |
6323 | ||
252b5132 | 6324 | if (r_type == R_PPC_ADDR32) |
47388f4c | 6325 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
6326 | else |
6327 | { | |
6328 | long indx; | |
6329 | ||
47388f4c | 6330 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
6331 | indx = 0; |
6332 | else if (sec == NULL || sec->owner == NULL) | |
6333 | { | |
6334 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6335 | return FALSE; |
252b5132 RH |
6336 | } |
6337 | else | |
6338 | { | |
6339 | asection *osec; | |
6340 | ||
47388f4c AM |
6341 | /* We are turning this relocation into one |
6342 | against a section symbol. It would be | |
6343 | proper to subtract the symbol's value, | |
6344 | osec->vma, from the emitted reloc addend, | |
6345 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
6346 | osec = sec->output_section; |
6347 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
6348 | if (indx == 0) |
6349 | { | |
6350 | osec = htab->elf.text_index_section; | |
6351 | indx = elf_section_data (osec)->dynindx; | |
6352 | } | |
6353 | BFD_ASSERT (indx != 0); | |
252b5132 | 6354 | #ifdef DEBUG |
74541ad4 | 6355 | if (indx == 0) |
e460dd0d | 6356 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
6357 | indx, osec->name, osec->flags, |
6358 | h->root.root.string); | |
252b5132 RH |
6359 | #endif |
6360 | } | |
6361 | ||
6362 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
6363 | } |
6364 | } | |
6365 | ||
947216bf AM |
6366 | loc = sreloc->contents; |
6367 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
6368 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 6369 | |
2243deae | 6370 | if (skip == -1) |
252b5132 | 6371 | continue; |
2243deae L |
6372 | |
6373 | /* This reloc will be computed at runtime. We clear the memory | |
6374 | so that it contains predictable value. */ | |
6375 | if (! skip | |
6376 | && ((input_section->flags & SEC_ALLOC) != 0 | |
6377 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
6378 | { | |
6379 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
6380 | addend = 0; | |
6381 | break; | |
6382 | } | |
252b5132 | 6383 | } |
252b5132 RH |
6384 | break; |
6385 | ||
b4a38de6 AM |
6386 | case R_PPC_RELAX32PC_PLT: |
6387 | case R_PPC_RELAX32_PLT: | |
a6aa5195 AM |
6388 | { |
6389 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
6390 | ||
4a3dc543 | 6391 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
6392 | relocation = (htab->glink->output_section->vma |
6393 | + htab->glink->output_offset | |
6394 | + ent->glink_offset); | |
6395 | else | |
6396 | relocation = (htab->plt->output_section->vma | |
6397 | + htab->plt->output_offset | |
6398 | + ent->plt.offset); | |
6399 | addend = 0; | |
6400 | } | |
b4a38de6 AM |
6401 | if (r_type == R_PPC_RELAX32_PLT) |
6402 | goto relax32; | |
6403 | /* Fall thru */ | |
6404 | ||
f31a141e AM |
6405 | case R_PPC_RELAX32PC: |
6406 | relocation -= (input_section->output_section->vma | |
6407 | + input_section->output_offset | |
6408 | + rel->r_offset - 4); | |
6409 | /* Fall thru */ | |
b4a38de6 | 6410 | |
deaaf2f3 | 6411 | case R_PPC_RELAX32: |
b4a38de6 | 6412 | relax32: |
9abc968f AM |
6413 | { |
6414 | unsigned long t0; | |
6415 | unsigned long t1; | |
6416 | ||
6417 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
6418 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
6419 | ||
6420 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
6421 | and R_PPC_ADDR16_LO here. */ | |
6422 | t0 &= ~0xffff; | |
6423 | t1 &= ~0xffff; | |
6424 | ||
6425 | /* t0 is HA, t1 is LO */ | |
6426 | relocation += addend; | |
6427 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
6428 | t1 |= relocation & 0xffff; | |
6429 | ||
6430 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
6431 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
6432 | } | |
8517fae7 | 6433 | continue; |
deaaf2f3 | 6434 | |
70bccea4 | 6435 | /* Indirect .sdata relocation. */ |
7619e7c7 | 6436 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 6437 | BFD_ASSERT (htab->sdata[0].section != NULL); |
7619e7c7 | 6438 | relocation |
76750a2f AM |
6439 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
6440 | h, relocation, rel); | |
252b5132 RH |
6441 | break; |
6442 | ||
70bccea4 | 6443 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 6444 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 6445 | BFD_ASSERT (htab->sdata[1].section != NULL); |
7619e7c7 | 6446 | relocation |
76750a2f AM |
6447 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
6448 | h, relocation, rel); | |
252b5132 RH |
6449 | break; |
6450 | ||
70bccea4 AM |
6451 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
6452 | section, not the actual VMA. This is appropriate when generating | |
6453 | an embedded ELF object, for which the .got section acts like the | |
6454 | AIX .toc section. */ | |
7619e7c7 | 6455 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 6456 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
6457 | BFD_ASSERT (bfd_is_und_section (sec) |
6458 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 6459 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 6460 | |
70bccea4 | 6461 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
6462 | break; |
6463 | ||
7619e7c7 | 6464 | case R_PPC_PLTREL24: |
252b5132 | 6465 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 6466 | procedure linkage table. */ |
a6aa5195 AM |
6467 | { |
6468 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
252b5132 | 6469 | |
a6aa5195 AM |
6470 | addend = 0; |
6471 | if (ent == NULL | |
6472 | || htab->plt == NULL) | |
6473 | { | |
6474 | /* We didn't make a PLT entry for this symbol. This | |
6475 | happens when statically linking PIC code, or when | |
6476 | using -Bsymbolic. */ | |
6477 | break; | |
6478 | } | |
252b5132 | 6479 | |
a6aa5195 | 6480 | unresolved_reloc = FALSE; |
4a3dc543 | 6481 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
6482 | relocation = (htab->glink->output_section->vma |
6483 | + htab->glink->output_offset | |
6484 | + ent->glink_offset); | |
6485 | else | |
6486 | relocation = (htab->plt->output_section->vma | |
6487 | + htab->plt->output_offset | |
6488 | + ent->plt.offset); | |
6489 | } | |
8da6118f | 6490 | break; |
252b5132 | 6491 | |
70bccea4 | 6492 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 6493 | case R_PPC_SDAREL16: |
252b5132 RH |
6494 | { |
6495 | const char *name; | |
046183de | 6496 | struct elf_link_hash_entry *sh; |
252b5132 | 6497 | |
55fd94b0 | 6498 | BFD_ASSERT (sec != NULL); |
252b5132 | 6499 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 6500 | if (! ((CONST_STRNEQ (name, ".sdata") |
5f819128 | 6501 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 6502 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 6503 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 | 6504 | { |
55fd94b0 | 6505 | (*_bfd_error_handler) |
d003868e | 6506 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6507 | "in the wrong output section (%s)"), |
d003868e | 6508 | input_bfd, |
55fd94b0 AM |
6509 | sym_name, |
6510 | howto->name, | |
6511 | name); | |
252b5132 | 6512 | } |
046183de AM |
6513 | sh = htab->sdata[0].sym; |
6514 | addend -= (sh->root.u.def.value | |
6515 | + sh->root.u.def.section->output_offset | |
6516 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6517 | } |
6518 | break; | |
6519 | ||
70bccea4 | 6520 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 6521 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
6522 | { |
6523 | const char *name; | |
046183de | 6524 | struct elf_link_hash_entry *sh; |
252b5132 | 6525 | |
55fd94b0 | 6526 | BFD_ASSERT (sec != NULL); |
252b5132 | 6527 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 NC |
6528 | if (! (CONST_STRNEQ (name, ".sdata2") |
6529 | || CONST_STRNEQ (name, ".sbss2"))) | |
252b5132 | 6530 | { |
55fd94b0 | 6531 | (*_bfd_error_handler) |
d003868e | 6532 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6533 | "in the wrong output section (%s)"), |
d003868e | 6534 | input_bfd, |
55fd94b0 AM |
6535 | sym_name, |
6536 | howto->name, | |
6537 | name); | |
c3668558 | 6538 | |
252b5132 | 6539 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6540 | ret = FALSE; |
252b5132 RH |
6541 | continue; |
6542 | } | |
046183de AM |
6543 | sh = htab->sdata[1].sym; |
6544 | addend -= (sh->root.u.def.value | |
6545 | + sh->root.u.def.section->output_offset | |
6546 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6547 | } |
6548 | break; | |
6549 | ||
70bccea4 | 6550 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
6551 | case R_PPC_EMB_SDA21: |
6552 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
6553 | { |
6554 | const char *name; | |
6555 | int reg; | |
046183de | 6556 | struct elf_link_hash_entry *sh; |
252b5132 | 6557 | |
55fd94b0 | 6558 | BFD_ASSERT (sec != NULL); |
252b5132 | 6559 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 6560 | if (((CONST_STRNEQ (name, ".sdata") |
5f819128 | 6561 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 6562 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 6563 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 RH |
6564 | { |
6565 | reg = 13; | |
046183de AM |
6566 | sh = htab->sdata[0].sym; |
6567 | addend -= (sh->root.u.def.value | |
6568 | + sh->root.u.def.section->output_offset | |
6569 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6570 | } |
6571 | ||
0112cd26 NC |
6572 | else if (CONST_STRNEQ (name, ".sdata2") |
6573 | || CONST_STRNEQ (name, ".sbss2")) | |
252b5132 RH |
6574 | { |
6575 | reg = 2; | |
046183de AM |
6576 | sh = htab->sdata[1].sym; |
6577 | addend -= (sh->root.u.def.value | |
6578 | + sh->root.u.def.section->output_offset | |
6579 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6580 | } |
6581 | ||
8da6118f KH |
6582 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
6583 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
6584 | { |
6585 | reg = 0; | |
6586 | } | |
6587 | ||
6588 | else | |
6589 | { | |
55fd94b0 | 6590 | (*_bfd_error_handler) |
d003868e | 6591 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6592 | "in the wrong output section (%s)"), |
d003868e | 6593 | input_bfd, |
55fd94b0 AM |
6594 | sym_name, |
6595 | howto->name, | |
6596 | name); | |
252b5132 RH |
6597 | |
6598 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6599 | ret = FALSE; |
252b5132 RH |
6600 | continue; |
6601 | } | |
6602 | ||
6603 | if (r_type == R_PPC_EMB_SDA21) | |
6604 | { /* fill in register field */ | |
7619e7c7 | 6605 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 6606 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 6607 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
6608 | } |
6609 | } | |
6610 | break; | |
6611 | ||
70bccea4 | 6612 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
6613 | case R_PPC_SECTOFF: |
6614 | case R_PPC_SECTOFF_LO: | |
6615 | case R_PPC_SECTOFF_HI: | |
6616 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 6617 | BFD_ASSERT (sec != NULL); |
252b5132 | 6618 | addend -= sec->output_section->vma; |
252b5132 RH |
6619 | break; |
6620 | ||
70bccea4 | 6621 | /* Negative relocations. */ |
7619e7c7 AM |
6622 | case R_PPC_EMB_NADDR32: |
6623 | case R_PPC_EMB_NADDR16: | |
6624 | case R_PPC_EMB_NADDR16_LO: | |
6625 | case R_PPC_EMB_NADDR16_HI: | |
6626 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 6627 | addend -= 2 * relocation; |
252b5132 RH |
6628 | break; |
6629 | ||
7619e7c7 AM |
6630 | case R_PPC_COPY: |
6631 | case R_PPC_GLOB_DAT: | |
6632 | case R_PPC_JMP_SLOT: | |
6633 | case R_PPC_RELATIVE: | |
6634 | case R_PPC_PLT32: | |
6635 | case R_PPC_PLTREL32: | |
6636 | case R_PPC_PLT16_LO: | |
6637 | case R_PPC_PLT16_HI: | |
6638 | case R_PPC_PLT16_HA: | |
6639 | case R_PPC_ADDR30: | |
6640 | case R_PPC_EMB_RELSEC16: | |
6641 | case R_PPC_EMB_RELST_LO: | |
6642 | case R_PPC_EMB_RELST_HI: | |
6643 | case R_PPC_EMB_RELST_HA: | |
6644 | case R_PPC_EMB_BIT_FLD: | |
6645 | (*_bfd_error_handler) | |
d003868e AM |
6646 | (_("%B: relocation %s is not yet supported for symbol %s."), |
6647 | input_bfd, | |
7619e7c7 AM |
6648 | howto->name, |
6649 | sym_name); | |
252b5132 RH |
6650 | |
6651 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 6652 | ret = FALSE; |
252b5132 | 6653 | continue; |
7619e7c7 | 6654 | } |
252b5132 | 6655 | |
7619e7c7 AM |
6656 | /* Do any further special processing. */ |
6657 | switch (r_type) | |
6658 | { | |
6659 | default: | |
6660 | break; | |
6661 | ||
6662 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 6663 | case R_PPC_REL16_HA: |
7619e7c7 AM |
6664 | case R_PPC_SECTOFF_HA: |
6665 | case R_PPC_TPREL16_HA: | |
6666 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
6667 | case R_PPC_EMB_NADDR16_HA: |
6668 | case R_PPC_EMB_RELST_HA: | |
6669 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 6670 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
6671 | 'sec' would be NULL, and we should leave the symbol |
6672 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
6673 | if (sec == NULL) |
6674 | break; | |
6675 | /* Fall thru */ | |
6676 | ||
6677 | case R_PPC_PLT16_HA: | |
6678 | case R_PPC_GOT16_HA: | |
6679 | case R_PPC_GOT_TLSGD16_HA: | |
6680 | case R_PPC_GOT_TLSLD16_HA: | |
6681 | case R_PPC_GOT_TPREL16_HA: | |
6682 | case R_PPC_GOT_DTPREL16_HA: | |
6683 | /* Add 0x10000 if sign bit in 0:15 is set. | |
6684 | Bits 0:15 are not used. */ | |
6685 | addend += 0x8000; | |
7619e7c7 | 6686 | break; |
252b5132 RH |
6687 | } |
6688 | ||
252b5132 | 6689 | #ifdef DEBUG |
55fd94b0 AM |
6690 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
6691 | "offset = %ld, addend = %ld\n", | |
252b5132 | 6692 | howto->name, |
8da6118f | 6693 | (int) r_type, |
252b5132 RH |
6694 | sym_name, |
6695 | r_symndx, | |
7619e7c7 | 6696 | (long) rel->r_offset, |
8da6118f | 6697 | (long) addend); |
252b5132 RH |
6698 | #endif |
6699 | ||
7619e7c7 AM |
6700 | if (unresolved_reloc |
6701 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 6702 | && h->def_dynamic)) |
7619e7c7 AM |
6703 | { |
6704 | (*_bfd_error_handler) | |
d003868e AM |
6705 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
6706 | input_bfd, | |
6707 | input_section, | |
7619e7c7 | 6708 | (long) rel->r_offset, |
7b609f53 | 6709 | howto->name, |
7619e7c7 AM |
6710 | sym_name); |
6711 | ret = FALSE; | |
6712 | } | |
6713 | ||
252b5132 RH |
6714 | r = _bfd_final_link_relocate (howto, |
6715 | input_bfd, | |
6716 | input_section, | |
6717 | contents, | |
7619e7c7 | 6718 | rel->r_offset, |
252b5132 RH |
6719 | relocation, |
6720 | addend); | |
6721 | ||
7619e7c7 | 6722 | if (r != bfd_reloc_ok) |
252b5132 | 6723 | { |
7619e7c7 | 6724 | if (r == bfd_reloc_overflow) |
252b5132 | 6725 | { |
7619e7c7 AM |
6726 | if (warned) |
6727 | continue; | |
6728 | if (h != NULL | |
6729 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
6730 | && howto->pc_relative) |
6731 | { | |
6732 | /* Assume this is a call protected by other code that | |
6733 | detect the symbol is undefined. If this is the case, | |
6734 | we can safely ignore the overflow. If not, the | |
6735 | program is hosed anyway, and a little warning isn't | |
6736 | going to help. */ | |
252b5132 | 6737 | |
dc1bc0c9 RH |
6738 | continue; |
6739 | } | |
252b5132 | 6740 | |
7619e7c7 | 6741 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 6742 | (h ? &h->root : NULL), |
7619e7c7 AM |
6743 | sym_name, |
6744 | howto->name, | |
6745 | rel->r_addend, | |
6746 | input_bfd, | |
6747 | input_section, | |
6748 | rel->r_offset)) | |
6749 | return FALSE; | |
dc1bc0c9 RH |
6750 | } |
6751 | else | |
6752 | { | |
7619e7c7 | 6753 | (*_bfd_error_handler) |
d003868e AM |
6754 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
6755 | input_bfd, input_section, | |
7b609f53 | 6756 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 6757 | ret = FALSE; |
252b5132 RH |
6758 | } |
6759 | } | |
6760 | } | |
6761 | ||
252b5132 RH |
6762 | #ifdef DEBUG |
6763 | fprintf (stderr, "\n"); | |
6764 | #endif | |
6765 | ||
6766 | return ret; | |
6767 | } | |
252b5132 | 6768 | \f |
a6aa5195 AM |
6769 | #define PPC_LO(v) ((v) & 0xffff) |
6770 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6771 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6772 | ||
25dbc73a AM |
6773 | /* Finish up dynamic symbol handling. We set the contents of various |
6774 | dynamic sections here. */ | |
c5fccbec | 6775 | |
b34976b6 | 6776 | static bfd_boolean |
25dbc73a AM |
6777 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
6778 | struct bfd_link_info *info, | |
6779 | struct elf_link_hash_entry *h, | |
6780 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 6781 | { |
25dbc73a | 6782 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
6783 | struct plt_entry *ent; |
6784 | bfd_boolean doneone; | |
e1a9cb8e | 6785 | |
25dbc73a AM |
6786 | #ifdef DEBUG |
6787 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
6788 | h->root.root.string); | |
6789 | #endif | |
e1a9cb8e | 6790 | |
25dbc73a AM |
6791 | htab = ppc_elf_hash_table (info); |
6792 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 6793 | |
a6aa5195 AM |
6794 | doneone = FALSE; |
6795 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6796 | if (ent->plt.offset != (bfd_vma) -1) | |
6797 | { | |
6798 | if (!doneone) | |
6799 | { | |
6800 | Elf_Internal_Rela rela; | |
6801 | bfd_byte *loc; | |
6802 | bfd_vma reloc_index; | |
e1a9cb8e | 6803 | |
4a3dc543 | 6804 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
6805 | reloc_index = ent->plt.offset / 4; |
6806 | else | |
6807 | { | |
6808 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
6809 | / htab->plt_slot_size); | |
6810 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 6811 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
6812 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
6813 | } | |
6814 | ||
a6aa5195 AM |
6815 | /* This symbol has an entry in the procedure linkage table. |
6816 | Set it up. */ | |
4a3dc543 | 6817 | if (htab->plt_type == PLT_VXWORKS) |
a6aa5195 | 6818 | { |
9d8504b1 PB |
6819 | bfd_vma got_offset; |
6820 | const bfd_vma *plt_entry; | |
6821 | ||
6822 | /* The first three entries in .got.plt are reserved. */ | |
6823 | got_offset = (reloc_index + 3) * 4; | |
6824 | ||
6825 | /* Use the right PLT. */ | |
6826 | plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry | |
6827 | : ppc_elf_vxworks_plt_entry; | |
6828 | ||
6829 | /* Fill in the .plt on VxWorks. */ | |
6830 | if (info->shared) | |
6831 | { | |
6832 | bfd_vma got_offset_hi = (got_offset >> 16) | |
6833 | + ((got_offset & 0x8000) >> 15); | |
6834 | ||
6835 | bfd_put_32 (output_bfd, | |
6836 | plt_entry[0] | (got_offset_hi & 0xffff), | |
6837 | htab->plt->contents + ent->plt.offset + 0); | |
6838 | bfd_put_32 (output_bfd, | |
6839 | plt_entry[1] | (got_offset & 0xffff), | |
6840 | htab->plt->contents + ent->plt.offset + 4); | |
6841 | } | |
6842 | else | |
6843 | { | |
636ce3f5 AM |
6844 | bfd_vma got_loc |
6845 | = (got_offset | |
6846 | + htab->elf.hgot->root.u.def.value | |
6847 | + htab->elf.hgot->root.u.def.section->output_offset | |
6848 | + htab->elf.hgot->root.u.def.section->output_section->vma); | |
9d8504b1 PB |
6849 | bfd_vma got_loc_hi = (got_loc >> 16) |
6850 | + ((got_loc & 0x8000) >> 15); | |
6851 | ||
6852 | bfd_put_32 (output_bfd, | |
6853 | plt_entry[0] | (got_loc_hi & 0xffff), | |
6854 | htab->plt->contents + ent->plt.offset + 0); | |
6855 | bfd_put_32 (output_bfd, | |
6856 | plt_entry[1] | (got_loc & 0xffff), | |
6857 | htab->plt->contents + ent->plt.offset + 4); | |
6858 | } | |
6859 | ||
6860 | bfd_put_32 (output_bfd, plt_entry[2], | |
6861 | htab->plt->contents + ent->plt.offset + 8); | |
6862 | bfd_put_32 (output_bfd, plt_entry[3], | |
6863 | htab->plt->contents + ent->plt.offset + 12); | |
6864 | ||
6865 | /* This instruction is an immediate load. The value loaded is | |
6866 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
6867 | start of the .rela.plt section. The value is stored in the | |
6868 | low-order 16 bits of the load instruction. */ | |
6869 | /* NOTE: It appears that this is now an index rather than a | |
6870 | prescaled offset. */ | |
6871 | bfd_put_32 (output_bfd, | |
6872 | plt_entry[4] | reloc_index, | |
6873 | htab->plt->contents + ent->plt.offset + 16); | |
6874 | /* This instruction is a PC-relative branch whose target is | |
6875 | the start of the PLT section. The address of this branch | |
6876 | instruction is 20 bytes beyond the start of this PLT entry. | |
6877 | The address is encoded in bits 6-29, inclusive. The value | |
6878 | stored is right-shifted by two bits, permitting a 26-bit | |
6879 | offset. */ | |
6880 | bfd_put_32 (output_bfd, | |
6881 | (plt_entry[5] | |
6882 | | (-(ent->plt.offset + 20) & 0x03fffffc)), | |
6883 | htab->plt->contents + ent->plt.offset + 20); | |
6884 | bfd_put_32 (output_bfd, plt_entry[6], | |
6885 | htab->plt->contents + ent->plt.offset + 24); | |
6886 | bfd_put_32 (output_bfd, plt_entry[7], | |
6887 | htab->plt->contents + ent->plt.offset + 28); | |
6888 | ||
6889 | /* Fill in the GOT entry corresponding to this PLT slot with | |
6890 | the address immediately after the the "bctr" instruction | |
6891 | in this PLT entry. */ | |
6892 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
6893 | + htab->plt->output_offset | |
6894 | + ent->plt.offset + 16), | |
6895 | htab->sgotplt->contents + got_offset); | |
6896 | ||
6897 | if (!info->shared) | |
6898 | { | |
6899 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
6900 | loc = htab->srelplt2->contents | |
6901 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
6902 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
6903 | * sizeof (Elf32_External_Rela)); | |
6904 | ||
6905 | /* Provide the @ha relocation for the first instruction. */ | |
6906 | rela.r_offset = (htab->plt->output_section->vma | |
6907 | + htab->plt->output_offset | |
6908 | + ent->plt.offset + 2); | |
636ce3f5 | 6909 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
6910 | R_PPC_ADDR16_HA); |
6911 | rela.r_addend = got_offset; | |
6912 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6913 | loc += sizeof (Elf32_External_Rela); | |
6914 | ||
6915 | /* Provide the @l relocation for the second instruction. */ | |
6916 | rela.r_offset = (htab->plt->output_section->vma | |
6917 | + htab->plt->output_offset | |
6918 | + ent->plt.offset + 6); | |
636ce3f5 | 6919 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
6920 | R_PPC_ADDR16_LO); |
6921 | rela.r_addend = got_offset; | |
6922 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6923 | loc += sizeof (Elf32_External_Rela); | |
6924 | ||
6925 | /* Provide a relocation for the GOT entry corresponding to this | |
6926 | PLT slot. Point it at the middle of the .plt entry. */ | |
6927 | rela.r_offset = (htab->sgotplt->output_section->vma | |
6928 | + htab->sgotplt->output_offset | |
6929 | + got_offset); | |
7325306f | 6930 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
6931 | R_PPC_ADDR32); |
6932 | rela.r_addend = ent->plt.offset + 16; | |
6933 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6934 | } | |
6935 | ||
6936 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
6937 | In particular, the offset for the relocation is not the | |
6938 | address of the PLT entry for this function, as specified | |
6939 | by the ABI. Instead, the offset is set to the address of | |
6940 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
6941 | rela.r_offset = (htab->sgotplt->output_section->vma | |
6942 | + htab->sgotplt->output_offset | |
6943 | + got_offset); | |
6944 | ||
a6aa5195 AM |
6945 | } |
6946 | else | |
6947 | { | |
9d8504b1 PB |
6948 | rela.r_offset = (htab->plt->output_section->vma |
6949 | + htab->plt->output_offset | |
6950 | + ent->plt.offset); | |
4a3dc543 | 6951 | if (htab->plt_type == PLT_OLD) |
9d8504b1 PB |
6952 | { |
6953 | /* We don't need to fill in the .plt. The ppc dynamic | |
6954 | linker will fill it in. */ | |
6955 | } | |
6956 | else | |
6957 | { | |
6958 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
6959 | + htab->glink->output_section->vma | |
6960 | + htab->glink->output_offset); | |
6961 | bfd_put_32 (output_bfd, val, | |
6962 | htab->plt->contents + ent->plt.offset); | |
6963 | } | |
a6aa5195 | 6964 | } |
e1a9cb8e | 6965 | |
a6aa5195 | 6966 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 AM |
6967 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); |
6968 | rela.r_addend = 0; | |
e1a9cb8e | 6969 | |
a6aa5195 AM |
6970 | loc = (htab->relplt->contents |
6971 | + reloc_index * sizeof (Elf32_External_Rela)); | |
6972 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
e1a9cb8e | 6973 | |
a6aa5195 AM |
6974 | if (!h->def_regular) |
6975 | { | |
6976 | /* Mark the symbol as undefined, rather than as defined in | |
6977 | the .plt section. Leave the value alone. */ | |
6978 | sym->st_shndx = SHN_UNDEF; | |
6979 | /* If the symbol is weak, we do need to clear the value. | |
6980 | Otherwise, the PLT entry would provide a definition for | |
6981 | the symbol even if the symbol wasn't defined anywhere, | |
6982 | and so the symbol would never be NULL. */ | |
6983 | if (!h->ref_regular_nonweak) | |
6984 | sym->st_value = 0; | |
6985 | } | |
6986 | doneone = TRUE; | |
6987 | } | |
e1a9cb8e | 6988 | |
4a3dc543 | 6989 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
6990 | { |
6991 | bfd_vma plt; | |
6992 | unsigned char *p; | |
e1a9cb8e | 6993 | |
a6aa5195 AM |
6994 | plt = (ent->plt.offset |
6995 | + htab->plt->output_section->vma | |
6996 | + htab->plt->output_offset); | |
6997 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; | |
e1a9cb8e | 6998 | |
a6aa5195 AM |
6999 | if (info->shared || info->pie) |
7000 | { | |
7001 | bfd_vma got = 0; | |
7002 | ||
7003 | if (ent->addend >= 32768) | |
7004 | got = (ent->addend | |
7005 | + ent->sec->output_section->vma | |
7006 | + ent->sec->output_offset); | |
7007 | else if (htab->elf.hgot != NULL) | |
7008 | got = (htab->elf.hgot->root.u.def.value | |
7009 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
7010 | + htab->elf.hgot->root.u.def.section->output_offset); | |
7011 | ||
7012 | plt -= got; | |
7013 | ||
7014 | if (plt + 0x8000 < 0x10000) | |
7015 | { | |
7016 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
7017 | p += 4; | |
7018 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7019 | p += 4; | |
7020 | bfd_put_32 (output_bfd, BCTR, p); | |
7021 | p += 4; | |
7022 | bfd_put_32 (output_bfd, NOP, p); | |
7023 | p += 4; | |
7024 | } | |
7025 | else | |
7026 | { | |
7027 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7028 | p += 4; | |
7029 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7030 | p += 4; | |
7031 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7032 | p += 4; | |
7033 | bfd_put_32 (output_bfd, BCTR, p); | |
7034 | p += 4; | |
7035 | } | |
7036 | } | |
7037 | else | |
7038 | { | |
7039 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7040 | p += 4; | |
7041 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7042 | p += 4; | |
7043 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7044 | p += 4; | |
7045 | bfd_put_32 (output_bfd, BCTR, p); | |
7046 | p += 4; | |
28e99bb6 AM |
7047 | |
7048 | /* We only need one non-PIC glink stub. */ | |
7049 | break; | |
a6aa5195 AM |
7050 | } |
7051 | } | |
7052 | else | |
7053 | break; | |
7054 | } | |
e1a9cb8e | 7055 | |
25dbc73a AM |
7056 | if (h->needs_copy) |
7057 | { | |
7058 | asection *s; | |
7059 | Elf_Internal_Rela rela; | |
7060 | bfd_byte *loc; | |
e1a9cb8e | 7061 | |
25dbc73a | 7062 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 7063 | |
25dbc73a AM |
7064 | #ifdef DEBUG |
7065 | fprintf (stderr, ", copy"); | |
7066 | #endif | |
e1a9cb8e | 7067 | |
25dbc73a | 7068 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 7069 | |
4dc4a9a5 | 7070 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
7071 | s = htab->relsbss; |
7072 | else | |
7073 | s = htab->relbss; | |
7074 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 7075 | |
25dbc73a AM |
7076 | rela.r_offset = (h->root.u.def.value |
7077 | + h->root.u.def.section->output_section->vma | |
7078 | + h->root.u.def.section->output_offset); | |
7079 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
7080 | rela.r_addend = 0; | |
7081 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
7082 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7083 | } | |
e1a9cb8e | 7084 | |
25dbc73a AM |
7085 | #ifdef DEBUG |
7086 | fprintf (stderr, "\n"); | |
7087 | #endif | |
e1a9cb8e | 7088 | |
25dbc73a | 7089 | /* Mark some specially defined symbols as absolute. */ |
9d8504b1 PB |
7090 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
7091 | || (!htab->is_vxworks | |
7092 | && (h == htab->elf.hgot | |
7093 | || strcmp (h->root.root.string, | |
7094 | "_PROCEDURE_LINKAGE_TABLE_") == 0))) | |
25dbc73a | 7095 | sym->st_shndx = SHN_ABS; |
e1a9cb8e | 7096 | |
25dbc73a AM |
7097 | return TRUE; |
7098 | } | |
7099 | \f | |
7100 | static enum elf_reloc_type_class | |
7101 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
e1a9cb8e | 7102 | { |
25dbc73a AM |
7103 | switch (ELF32_R_TYPE (rela->r_info)) |
7104 | { | |
7105 | case R_PPC_RELATIVE: | |
7106 | return reloc_class_relative; | |
7107 | case R_PPC_REL24: | |
7108 | case R_PPC_ADDR24: | |
7109 | case R_PPC_JMP_SLOT: | |
7110 | return reloc_class_plt; | |
7111 | case R_PPC_COPY: | |
7112 | return reloc_class_copy; | |
7113 | default: | |
7114 | return reloc_class_normal; | |
7115 | } | |
e1a9cb8e | 7116 | } |
25dbc73a AM |
7117 | \f |
7118 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 7119 | |
25dbc73a AM |
7120 | static bfd_boolean |
7121 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
7122 | struct bfd_link_info *info) | |
e1a9cb8e | 7123 | { |
25dbc73a | 7124 | asection *sdyn; |
9d8504b1 | 7125 | asection *splt; |
25dbc73a | 7126 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 7127 | bfd_vma got; |
9d8504b1 | 7128 | bfd * dynobj; |
e1a9cb8e | 7129 | |
25dbc73a AM |
7130 | #ifdef DEBUG |
7131 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
7132 | #endif | |
6b0817e5 | 7133 | |
25dbc73a | 7134 | htab = ppc_elf_hash_table (info); |
9d8504b1 PB |
7135 | dynobj = elf_hash_table (info)->dynobj; |
7136 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
7137 | if (htab->is_vxworks) | |
7138 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
7139 | else | |
7140 | splt = NULL; | |
e1a9cb8e | 7141 | |
1fe44d79 AM |
7142 | got = 0; |
7143 | if (htab->elf.hgot != NULL) | |
7144 | got = (htab->elf.hgot->root.u.def.value | |
7145 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
7146 | + htab->elf.hgot->root.u.def.section->output_offset); | |
7147 | ||
25dbc73a | 7148 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 7149 | { |
25dbc73a | 7150 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 7151 | |
25dbc73a | 7152 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 7153 | |
25dbc73a AM |
7154 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
7155 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
7156 | for (; dyncon < dynconend; dyncon++) | |
7157 | { | |
7158 | Elf_Internal_Dyn dyn; | |
7159 | asection *s; | |
e1a9cb8e | 7160 | |
9d8504b1 | 7161 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 7162 | |
25dbc73a AM |
7163 | switch (dyn.d_tag) |
7164 | { | |
7165 | case DT_PLTGOT: | |
9d8504b1 PB |
7166 | if (htab->is_vxworks) |
7167 | s = htab->sgotplt; | |
7168 | else | |
7169 | s = htab->plt; | |
25dbc73a AM |
7170 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
7171 | break; | |
86bbe32f | 7172 | |
25dbc73a AM |
7173 | case DT_PLTRELSZ: |
7174 | dyn.d_un.d_val = htab->relplt->size; | |
7175 | break; | |
e1a9cb8e | 7176 | |
25dbc73a AM |
7177 | case DT_JMPREL: |
7178 | s = htab->relplt; | |
7179 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
7180 | break; | |
2f89ff8d | 7181 | |
1fe44d79 AM |
7182 | case DT_PPC_GOT: |
7183 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
7184 | break; |
7185 | ||
9d8504b1 PB |
7186 | case DT_RELASZ: |
7187 | if (htab->is_vxworks) | |
7188 | { | |
7189 | if (htab->relplt) | |
7190 | dyn.d_un.d_ptr -= htab->relplt->size; | |
7191 | break; | |
7192 | } | |
7193 | continue; | |
7194 | ||
25dbc73a AM |
7195 | default: |
7196 | continue; | |
7197 | } | |
4c45e5c9 | 7198 | |
25dbc73a AM |
7199 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7200 | } | |
7201 | } | |
4c45e5c9 | 7202 | |
25dbc73a AM |
7203 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
7204 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
3b36f7e6 | 7205 | if (htab->got != NULL) |
25dbc73a | 7206 | { |
3b36f7e6 AM |
7207 | unsigned char *p = htab->got->contents; |
7208 | bfd_vma val; | |
2f89ff8d | 7209 | |
636ce3f5 | 7210 | p += htab->elf.hgot->root.u.def.value; |
4a3dc543 | 7211 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 7212 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4); |
3b36f7e6 AM |
7213 | |
7214 | val = 0; | |
7215 | if (sdyn != NULL) | |
7216 | val = sdyn->output_section->vma + sdyn->output_offset; | |
7217 | bfd_put_32 (output_bfd, val, p); | |
25dbc73a AM |
7218 | |
7219 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
7220 | } | |
7221 | ||
9d8504b1 PB |
7222 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
7223 | if (splt && splt->size > 0) | |
7224 | { | |
7225 | /* Use the right PLT. */ | |
7226 | static const bfd_vma *plt_entry = NULL; | |
7227 | plt_entry = info->shared ? | |
7228 | ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry; | |
7229 | ||
7230 | if (!info->shared) | |
7231 | { | |
7232 | bfd_vma got_value = | |
636ce3f5 AM |
7233 | (htab->elf.hgot->root.u.def.section->output_section->vma |
7234 | + htab->elf.hgot->root.u.def.section->output_offset | |
7235 | + htab->elf.hgot->root.u.def.value); | |
9d8504b1 PB |
7236 | bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15); |
7237 | ||
7238 | bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff), | |
7239 | splt->contents + 0); | |
7240 | bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff), | |
7241 | splt->contents + 4); | |
7242 | } | |
7243 | else | |
7244 | { | |
7245 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
7246 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
7247 | } | |
7248 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
7249 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
7250 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
7251 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
7252 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
7253 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
7254 | ||
7255 | if (! info->shared) | |
7256 | { | |
7257 | Elf_Internal_Rela rela; | |
7258 | bfd_byte *loc; | |
7259 | ||
7260 | loc = htab->srelplt2->contents; | |
7261 | ||
7262 | /* Output the @ha relocation for the first instruction. */ | |
7263 | rela.r_offset = (htab->plt->output_section->vma | |
7264 | + htab->plt->output_offset | |
7265 | + 2); | |
636ce3f5 | 7266 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7267 | rela.r_addend = 0; |
7268 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7269 | loc += sizeof (Elf32_External_Rela); | |
7270 | ||
7271 | /* Output the @l relocation for the second instruction. */ | |
7272 | rela.r_offset = (htab->plt->output_section->vma | |
7273 | + htab->plt->output_offset | |
7274 | + 6); | |
636ce3f5 | 7275 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7276 | rela.r_addend = 0; |
7277 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7278 | loc += sizeof (Elf32_External_Rela); | |
7279 | ||
7280 | /* Fix up the remaining relocations. They may have the wrong | |
7281 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
7282 | in which symbols were output. */ | |
7283 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
7284 | { | |
7285 | Elf_Internal_Rela rel; | |
7286 | ||
7287 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7288 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7289 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7290 | loc += sizeof (Elf32_External_Rela); | |
7291 | ||
7292 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7293 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7294 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7295 | loc += sizeof (Elf32_External_Rela); | |
7296 | ||
7297 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 7298 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
7299 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7300 | loc += sizeof (Elf32_External_Rela); | |
7301 | } | |
7302 | } | |
7303 | } | |
7304 | ||
d7128ce4 AM |
7305 | if (htab->glink != NULL && htab->glink->contents != NULL) |
7306 | { | |
7307 | unsigned char *p; | |
7308 | unsigned char *endp; | |
a6aa5195 | 7309 | bfd_vma res0; |
d7128ce4 | 7310 | unsigned int i; |
a6aa5195 AM |
7311 | |
7312 | /* | |
7313 | * PIC glink code is the following: | |
7314 | * | |
7315 | * # ith PLT code stub. | |
7316 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
7317 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
7318 | * mtctr 11 | |
7319 | * bctr | |
7320 | * | |
7321 | * # A table of branches, one for each plt entry. | |
7322 | * # The idea is that the plt call stub loads ctr (and r11) with these | |
7323 | * # addresses, so (r11 - res_0) gives the plt index * 4. | |
7324 | * res_0: b PLTresolve | |
7325 | * res_1: b PLTresolve | |
7326 | * . | |
7327 | * # Some number of entries towards the end can be nops | |
7328 | * res_n_m3: nop | |
7329 | * res_n_m2: nop | |
7330 | * res_n_m1: | |
7331 | * | |
7332 | * PLTresolve: | |
7333 | * addis 11,11,(1f-res_0)@ha | |
7334 | * mflr 0 | |
7335 | * bcl 20,31,1f | |
7336 | * 1: addi 11,11,(1b-res_0)@l | |
7337 | * mflr 12 | |
7338 | * mtlr 0 | |
7339 | * sub 11,11,12 # r11 = index * 4 | |
7340 | * addis 12,12,(got+4-1b)@ha | |
7341 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
7342 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
7343 | * mtctr 0 | |
7344 | * add 0,11,11 | |
7345 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
7346 | * bctr | |
7347 | */ | |
7348 | static const unsigned int pic_plt_resolve[] = | |
7349 | { | |
7350 | ADDIS_11_11, | |
7351 | MFLR_0, | |
7352 | BCL_20_31, | |
7353 | ADDI_11_11, | |
7354 | MFLR_12, | |
7355 | MTLR_0, | |
7356 | SUB_11_11_12, | |
7357 | ADDIS_12_12, | |
7358 | LWZ_0_12, | |
7359 | LWZ_12_12, | |
7360 | MTCTR_0, | |
7361 | ADD_0_11_11, | |
7362 | ADD_11_0_11, | |
7363 | BCTR, | |
7364 | NOP, | |
7365 | NOP | |
7366 | }; | |
7367 | ||
d7128ce4 AM |
7368 | static const unsigned int plt_resolve[] = |
7369 | { | |
a6aa5195 AM |
7370 | LIS_12, |
7371 | ADDIS_11_11, | |
7372 | LWZ_0_12, | |
7373 | ADDI_11_11, | |
d7128ce4 | 7374 | MTCTR_0, |
7e8aeb9a | 7375 | ADD_0_11_11, |
a6aa5195 | 7376 | LWZ_12_12, |
7e8aeb9a | 7377 | ADD_11_0_11, |
d7128ce4 AM |
7378 | BCTR, |
7379 | NOP, | |
7380 | NOP, | |
a6aa5195 AM |
7381 | NOP, |
7382 | NOP, | |
7383 | NOP, | |
7384 | NOP, | |
d7128ce4 AM |
7385 | NOP |
7386 | }; | |
7387 | ||
a6aa5195 AM |
7388 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
7389 | abort (); | |
7390 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
7391 | abort (); |
7392 | ||
a6aa5195 | 7393 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 7394 | and perhaps some padding. */ |
a6aa5195 AM |
7395 | p = htab->glink->contents; |
7396 | p += htab->glink_pltresolve; | |
86b9da88 AM |
7397 | endp = htab->glink->contents; |
7398 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
7399 | while (p < endp - 8 * 4) | |
7400 | { | |
7401 | bfd_put_32 (output_bfd, B + endp - p, p); | |
7402 | p += 4; | |
7403 | } | |
7404 | while (p < endp) | |
7405 | { | |
7406 | bfd_put_32 (output_bfd, NOP, p); | |
7407 | p += 4; | |
7408 | } | |
7409 | ||
7e8aeb9a | 7410 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
7411 | + htab->glink->output_section->vma |
7412 | + htab->glink->output_offset); | |
7413 | ||
7414 | /* Last comes the PLTresolve stub. */ | |
7e8aeb9a AM |
7415 | if (info->shared || info->pie) |
7416 | { | |
a6aa5195 | 7417 | bfd_vma bcl; |
d7128ce4 | 7418 | |
a6aa5195 | 7419 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 7420 | { |
a6aa5195 | 7421 | bfd_put_32 (output_bfd, pic_plt_resolve[i], p); |
7e8aeb9a AM |
7422 | p += 4; |
7423 | } | |
a6aa5195 AM |
7424 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
7425 | ||
7426 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
7427 | + htab->glink->output_section->vma | |
7428 | + htab->glink->output_offset); | |
7429 | ||
7430 | bfd_put_32 (output_bfd, | |
7431 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
7432 | bfd_put_32 (output_bfd, | |
7433 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
7434 | bfd_put_32 (output_bfd, | |
7435 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
7436 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
7437 | { | |
7438 | bfd_put_32 (output_bfd, | |
7439 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7440 | bfd_put_32 (output_bfd, | |
7441 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
7442 | } | |
7443 | else | |
7444 | { | |
7445 | bfd_put_32 (output_bfd, | |
7446 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7447 | bfd_put_32 (output_bfd, | |
7448 | LWZ_12_12 + 4, p + 9*4); | |
7449 | } | |
7e8aeb9a AM |
7450 | } |
7451 | else | |
d7128ce4 | 7452 | { |
a6aa5195 | 7453 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a AM |
7454 | { |
7455 | bfd_put_32 (output_bfd, plt_resolve[i], p); | |
7456 | p += 4; | |
7457 | } | |
a6aa5195 AM |
7458 | p -= 4 * ARRAY_SIZE (plt_resolve); |
7459 | ||
7460 | bfd_put_32 (output_bfd, | |
7461 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
7462 | bfd_put_32 (output_bfd, | |
7463 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
7464 | bfd_put_32 (output_bfd, | |
7465 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
7466 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
7467 | { | |
7468 | bfd_put_32 (output_bfd, | |
7469 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
7470 | bfd_put_32 (output_bfd, | |
7471 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
7472 | } | |
7473 | else | |
7474 | { | |
7475 | bfd_put_32 (output_bfd, | |
7476 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
7477 | bfd_put_32 (output_bfd, | |
7478 | LWZ_12_12 + 4, p + 6*4); | |
7479 | } | |
d7128ce4 | 7480 | } |
d7128ce4 AM |
7481 | } |
7482 | ||
25dbc73a AM |
7483 | return TRUE; |
7484 | } | |
e1a9cb8e | 7485 | \f |
252b5132 RH |
7486 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
7487 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
7488 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
7489 | #define TARGET_BIG_NAME "elf32-powerpc" | |
7490 | #define ELF_ARCH bfd_arch_powerpc | |
7491 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
7492 | #ifdef __QNXTARGET__ |
7493 | #define ELF_MAXPAGESIZE 0x1000 | |
7494 | #else | |
252b5132 | 7495 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 7496 | #endif |
b1342370 | 7497 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 7498 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 RH |
7499 | #define elf_info_to_howto ppc_elf_info_to_howto |
7500 | ||
7501 | #ifdef EM_CYGNUS_POWERPC | |
7502 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
7503 | #endif | |
7504 | ||
7505 | #ifdef EM_PPC_OLD | |
7506 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
7507 | #endif | |
7508 | ||
7509 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 7510 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 7511 | #define elf_backend_can_refcount 1 |
b491616a | 7512 | #define elf_backend_rela_normal 1 |
252b5132 | 7513 | |
43c40ab2 | 7514 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 7515 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 7516 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 7517 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
157090f7 | 7518 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 7519 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 7520 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 7521 | |
feee612b | 7522 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
7523 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
7524 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
7525 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
7526 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
7527 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
7528 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 7529 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
7530 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
7531 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
7532 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
7533 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
7534 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
7535 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
7536 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
7537 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
7538 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 7539 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 7540 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
7541 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
7542 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
7543 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 7544 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 7545 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 7546 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 7547 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
7548 | |
7549 | #include "elf32-target.h" | |
9d8504b1 PB |
7550 | |
7551 | /* VxWorks Target */ | |
7552 | ||
7553 | #undef TARGET_LITTLE_SYM | |
7554 | #undef TARGET_LITTLE_NAME | |
7555 | ||
7556 | #undef TARGET_BIG_SYM | |
7557 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec | |
7558 | #undef TARGET_BIG_NAME | |
7559 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
7560 | ||
d5e3d971 PB |
7561 | /* VxWorks uses the elf default section flags for .plt. */ |
7562 | static const struct bfd_elf_special_section * | |
7563 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 7564 | { |
d5e3d971 PB |
7565 | if (sec->name == NULL) |
7566 | return NULL; | |
7567 | ||
7568 | if (strcmp (sec->name, ".plt") == 0) | |
7569 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
7570 | ||
7571 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
7572 | } | |
9d8504b1 PB |
7573 | |
7574 | /* Like ppc_elf_link_hash_table_create, but overrides | |
7575 | appropriately for VxWorks. */ | |
7576 | static struct bfd_link_hash_table * | |
7577 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
7578 | { | |
7579 | struct bfd_link_hash_table *ret; | |
7580 | ||
7581 | ret = ppc_elf_link_hash_table_create (abfd); | |
7582 | if (ret) | |
7583 | { | |
7584 | struct ppc_elf_link_hash_table *htab | |
7585 | = (struct ppc_elf_link_hash_table *)ret; | |
7586 | htab->is_vxworks = 1; | |
4a3dc543 | 7587 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
7588 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
7589 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
7590 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
7591 | } | |
7592 | return ret; | |
7593 | } | |
7594 | ||
7595 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
7596 | static bfd_boolean | |
7597 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
7598 | struct bfd_link_info *info, | |
7599 | Elf_Internal_Sym *sym, | |
7600 | const char **namep ATTRIBUTE_UNUSED, | |
7601 | flagword *flagsp ATTRIBUTE_UNUSED, | |
7602 | asection **secp, | |
7603 | bfd_vma *valp) | |
7604 | { | |
7605 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
7606 | valp)) | |
7607 | return FALSE; | |
7608 | ||
7609 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
7610 | } | |
7611 | ||
9d8504b1 PB |
7612 | static void |
7613 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
7614 | { | |
7615 | ppc_elf_final_write_processing(abfd, linker); | |
7616 | elf_vxworks_final_write_processing(abfd, linker); | |
7617 | } | |
7618 | ||
7619 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
7620 | define it. */ | |
7621 | #undef elf_backend_want_plt_sym | |
7622 | #define elf_backend_want_plt_sym 1 | |
7623 | #undef elf_backend_want_got_plt | |
7624 | #define elf_backend_want_got_plt 1 | |
7625 | #undef elf_backend_got_symbol_offset | |
7626 | #define elf_backend_got_symbol_offset 0 | |
7627 | #undef elf_backend_plt_not_loaded | |
7628 | #define elf_backend_plt_not_loaded 0 | |
7629 | #undef elf_backend_plt_readonly | |
7630 | #define elf_backend_plt_readonly 1 | |
7631 | #undef elf_backend_got_header_size | |
7632 | #define elf_backend_got_header_size 12 | |
7633 | ||
7634 | #undef bfd_elf32_bfd_link_hash_table_create | |
7635 | #define bfd_elf32_bfd_link_hash_table_create \ | |
7636 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
7637 | #undef elf_backend_add_symbol_hook |
7638 | #define elf_backend_add_symbol_hook \ | |
7639 | ppc_elf_vxworks_add_symbol_hook | |
7640 | #undef elf_backend_link_output_symbol_hook | |
7641 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 7642 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
7643 | #undef elf_backend_final_write_processing |
7644 | #define elf_backend_final_write_processing \ | |
7645 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
7646 | #undef elf_backend_get_sec_type_attr |
7647 | #define elf_backend_get_sec_type_attr \ | |
7648 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
7649 | #undef elf_backend_emit_relocs |
7650 | #define elf_backend_emit_relocs \ | |
7651 | elf_vxworks_emit_relocs | |
7652 | ||
7653 | #undef elf32_bed | |
7654 | #define elf32_bed ppc_elf_vxworks_bed | |
7655 | ||
7656 | #include "elf32-target.h" |