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 | ||
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
252b5132 | 30 | #include "bfd.h" |
252b5132 RH |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
34 | #include "elf/ppc.h" | |
7619e7c7 | 35 | #include "elf32-ppc.h" |
9d8504b1 | 36 | #include "elf-vxworks.h" |
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)]; | |
375de94a AM |
1610 | |
1611 | /* Just because the above assert didn't trigger doesn't mean that | |
1612 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
1613 | if (!cache_ptr->howto) | |
1614 | { | |
1615 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
1616 | abfd, ELF32_R_TYPE (dst->r_info)); | |
1617 | bfd_set_error (bfd_error_bad_value); | |
1618 | ||
1619 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
1620 | } | |
25dbc73a AM |
1621 | } |
1622 | ||
d7128ce4 | 1623 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
1624 | |
1625 | static bfd_reloc_status_type | |
1626 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
1627 | arelent *reloc_entry, | |
1628 | asymbol *symbol, | |
1629 | void *data ATTRIBUTE_UNUSED, | |
1630 | asection *input_section, | |
1631 | bfd *output_bfd, | |
1632 | char **error_message ATTRIBUTE_UNUSED) | |
1633 | { | |
1634 | bfd_vma relocation; | |
1635 | ||
1636 | if (output_bfd != NULL) | |
1637 | { | |
1638 | reloc_entry->address += input_section->output_offset; | |
1639 | return bfd_reloc_ok; | |
1640 | } | |
1641 | ||
1642 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
1643 | return bfd_reloc_outofrange; | |
1644 | ||
1645 | if (bfd_is_com_section (symbol->section)) | |
1646 | relocation = 0; | |
1647 | else | |
1648 | relocation = symbol->value; | |
1649 | ||
1650 | relocation += symbol->section->output_section->vma; | |
1651 | relocation += symbol->section->output_offset; | |
1652 | relocation += reloc_entry->addend; | |
d7128ce4 AM |
1653 | if (reloc_entry->howto->pc_relative) |
1654 | relocation -= reloc_entry->address; | |
25dbc73a AM |
1655 | |
1656 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1657 | ||
1658 | return bfd_reloc_continue; | |
1659 | } | |
1660 | ||
1661 | static bfd_reloc_status_type | |
1662 | ppc_elf_unhandled_reloc (bfd *abfd, | |
1663 | arelent *reloc_entry, | |
1664 | asymbol *symbol, | |
1665 | void *data, | |
1666 | asection *input_section, | |
1667 | bfd *output_bfd, | |
1668 | char **error_message) | |
1669 | { | |
1670 | /* If this is a relocatable link (output_bfd test tells us), just | |
1671 | call the generic function. Any adjustment will be done at final | |
1672 | link time. */ | |
1673 | if (output_bfd != NULL) | |
1674 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1675 | input_section, output_bfd, error_message); | |
1676 | ||
1677 | if (error_message != NULL) | |
1678 | { | |
1679 | static char buf[60]; | |
1680 | sprintf (buf, _("generic linker can't handle %s"), | |
1681 | reloc_entry->howto->name); | |
1682 | *error_message = buf; | |
1683 | } | |
1684 | return bfd_reloc_dangerous; | |
1685 | } | |
1686 | \f | |
1687 | /* Sections created by the linker. */ | |
1688 | ||
1689 | typedef struct elf_linker_section | |
1690 | { | |
c9a2f333 | 1691 | /* Pointer to the bfd section. */ |
25dbc73a | 1692 | asection *section; |
c9a2f333 AM |
1693 | /* Section name. */ |
1694 | const char *name; | |
1695 | /* Associated bss section name. */ | |
1696 | const char *bss_name; | |
1697 | /* Associated symbol name. */ | |
1698 | const char *sym_name; | |
046183de AM |
1699 | /* Associated symbol. */ |
1700 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1701 | } elf_linker_section_t; |
1702 | ||
1703 | /* Linked list of allocated pointer entries. This hangs off of the | |
1704 | symbol lists, and provides allows us to return different pointers, | |
1705 | based on different addend's. */ | |
1706 | ||
1707 | typedef struct elf_linker_section_pointers | |
1708 | { | |
1709 | /* next allocated pointer for this symbol */ | |
1710 | struct elf_linker_section_pointers *next; | |
1711 | /* offset of pointer from beginning of section */ | |
1712 | bfd_vma offset; | |
1713 | /* addend used */ | |
1714 | bfd_vma addend; | |
1715 | /* which linker section this is */ | |
1716 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1717 | } elf_linker_section_pointers_t; |
1718 | ||
1719 | struct ppc_elf_obj_tdata | |
1720 | { | |
1721 | struct elf_obj_tdata elf; | |
1722 | ||
1723 | /* A mapping from local symbols to offsets into the various linker | |
1724 | sections added. This is index by the symbol index. */ | |
1725 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
1726 | |
1727 | /* Flags used to auto-detect plt type. */ | |
1728 | unsigned int makes_plt_call : 1; | |
1729 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
1730 | }; |
1731 | ||
1732 | #define ppc_elf_tdata(bfd) \ | |
1733 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1734 | |
25dbc73a AM |
1735 | #define elf_local_ptr_offsets(bfd) \ |
1736 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1737 | |
25dbc73a | 1738 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1739 | |
25dbc73a AM |
1740 | static bfd_boolean |
1741 | ppc_elf_mkobject (bfd *abfd) | |
1742 | { | |
25dbc73a | 1743 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
1744 | { |
1745 | bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata); | |
1746 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1747 | if (abfd->tdata.any == NULL) | |
1748 | return FALSE; | |
1749 | } | |
1750 | return bfd_elf_mkobject (abfd); | |
25dbc73a | 1751 | } |
7619e7c7 | 1752 | |
25dbc73a AM |
1753 | /* Fix bad default arch selected for a 32 bit input bfd when the |
1754 | default is 64 bit. */ | |
7619e7c7 | 1755 | |
25dbc73a AM |
1756 | static bfd_boolean |
1757 | ppc_elf_object_p (bfd *abfd) | |
1758 | { | |
1759 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
1760 | { | |
1761 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1762 | |
25dbc73a AM |
1763 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1764 | { | |
1765 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1766 | abfd->arch_info = abfd->arch_info->next; | |
1767 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1768 | } | |
1769 | } | |
1770 | return TRUE; | |
1771 | } | |
7619e7c7 | 1772 | |
25dbc73a | 1773 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1774 | |
25dbc73a AM |
1775 | static bfd_boolean |
1776 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1777 | { | |
1778 | BFD_ASSERT (!elf_flags_init (abfd) | |
1779 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1780 | |
25dbc73a AM |
1781 | elf_elfheader (abfd)->e_flags = flags; |
1782 | elf_flags_init (abfd) = TRUE; | |
1783 | return TRUE; | |
1784 | } | |
1785 | ||
25dbc73a | 1786 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1787 | |
b34976b6 | 1788 | static bfd_boolean |
25dbc73a | 1789 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1790 | { |
25dbc73a AM |
1791 | int offset; |
1792 | unsigned int size; | |
252b5132 | 1793 | |
25dbc73a AM |
1794 | switch (note->descsz) |
1795 | { | |
1796 | default: | |
1797 | return FALSE; | |
252b5132 | 1798 | |
25dbc73a AM |
1799 | case 268: /* Linux/PPC. */ |
1800 | /* pr_cursig */ | |
1801 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
deaaf2f3 | 1802 | |
25dbc73a AM |
1803 | /* pr_pid */ |
1804 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9abc968f | 1805 | |
25dbc73a AM |
1806 | /* pr_reg */ |
1807 | offset = 72; | |
1808 | size = 192; | |
deaaf2f3 | 1809 | |
25dbc73a AM |
1810 | break; |
1811 | } | |
deaaf2f3 | 1812 | |
25dbc73a AM |
1813 | /* Make a ".reg/999" section. */ |
1814 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1815 | size, note->descpos + offset); | |
1816 | } | |
252b5132 | 1817 | |
25dbc73a AM |
1818 | static bfd_boolean |
1819 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1820 | { | |
1821 | switch (note->descsz) | |
deaaf2f3 | 1822 | { |
25dbc73a AM |
1823 | default: |
1824 | return FALSE; | |
deaaf2f3 | 1825 | |
25dbc73a AM |
1826 | case 128: /* Linux/PPC elf_prpsinfo. */ |
1827 | elf_tdata (abfd)->core_program | |
1828 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1829 | elf_tdata (abfd)->core_command | |
1830 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1831 | } | |
9abc968f | 1832 | |
25dbc73a AM |
1833 | /* Note that for some reason, a spurious space is tacked |
1834 | onto the end of the args in some (at least one anyway) | |
1835 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1836 | |
25dbc73a AM |
1837 | { |
1838 | char *command = elf_tdata (abfd)->core_command; | |
1839 | int n = strlen (command); | |
70bccea4 | 1840 | |
25dbc73a AM |
1841 | if (0 < n && command[n - 1] == ' ') |
1842 | command[n - 1] = '\0'; | |
1843 | } | |
deaaf2f3 | 1844 | |
25dbc73a AM |
1845 | return TRUE; |
1846 | } | |
deaaf2f3 | 1847 | |
183e98be AM |
1848 | static char * |
1849 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
1850 | { | |
1851 | switch (note_type) | |
1852 | { | |
1853 | default: | |
1854 | return NULL; | |
1855 | ||
1856 | case NT_PRPSINFO: | |
1857 | { | |
1858 | char data[128]; | |
1859 | va_list ap; | |
1860 | ||
1861 | va_start (ap, note_type); | |
1862 | memset (data, 0, 32); | |
1863 | strncpy (data + 32, va_arg (ap, const char *), 16); | |
1864 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
1865 | va_end (ap); | |
1866 | return elfcore_write_note (abfd, buf, bufsiz, | |
1867 | "CORE", note_type, data, sizeof (data)); | |
1868 | } | |
1869 | ||
1870 | case NT_PRSTATUS: | |
1871 | { | |
1872 | char data[268]; | |
1873 | va_list ap; | |
1874 | long pid; | |
1875 | int cursig; | |
1876 | const void *greg; | |
1877 | ||
1878 | va_start (ap, note_type); | |
1879 | memset (data, 0, 72); | |
1880 | pid = va_arg (ap, long); | |
1881 | bfd_put_32 (abfd, pid, data + 24); | |
1882 | cursig = va_arg (ap, int); | |
1883 | bfd_put_16 (abfd, cursig, data + 12); | |
1884 | greg = va_arg (ap, const void *); | |
1885 | memcpy (data + 72, greg, 192); | |
1886 | memset (data + 264, 0, 4); | |
1887 | va_end (ap); | |
1888 | return elfcore_write_note (abfd, buf, bufsiz, | |
1889 | "CORE", note_type, data, sizeof (data)); | |
1890 | } | |
1891 | } | |
1892 | } | |
1893 | ||
25dbc73a AM |
1894 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1895 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1896 | |
25dbc73a AM |
1897 | static bfd_vma |
1898 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1899 | const asection *plt ATTRIBUTE_UNUSED, | |
1900 | const arelent *rel) | |
1901 | { | |
1902 | return rel->address; | |
1903 | } | |
deaaf2f3 | 1904 | |
25dbc73a | 1905 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1906 | is called when bfd_section_from_shdr finds a section with an unknown |
1907 | type. */ | |
deaaf2f3 | 1908 | |
25dbc73a | 1909 | static bfd_boolean |
6dc132d9 L |
1910 | ppc_elf_section_from_shdr (bfd *abfd, |
1911 | Elf_Internal_Shdr *hdr, | |
1912 | const char *name, | |
1913 | int shindex) | |
25dbc73a AM |
1914 | { |
1915 | asection *newsect; | |
1916 | flagword flags; | |
d1c6de6f | 1917 | |
6dc132d9 | 1918 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1919 | return FALSE; |
deaaf2f3 | 1920 | |
25dbc73a AM |
1921 | newsect = hdr->bfd_section; |
1922 | flags = bfd_get_section_flags (abfd, newsect); | |
1923 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1924 | flags |= SEC_EXCLUDE; | |
9abc968f | 1925 | |
25dbc73a AM |
1926 | if (hdr->sh_type == SHT_ORDERED) |
1927 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1928 | |
25dbc73a AM |
1929 | bfd_set_section_flags (abfd, newsect, flags); |
1930 | return TRUE; | |
1931 | } | |
1932 | ||
1933 | /* Set up any other section flags and such that may be necessary. */ | |
1934 | ||
1935 | static bfd_boolean | |
1936 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1937 | Elf_Internal_Shdr *shdr, | |
1938 | asection *asect) | |
1939 | { | |
d30e8e7c | 1940 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
25dbc73a AM |
1941 | shdr->sh_flags |= SHF_EXCLUDE; |
1942 | ||
1943 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1944 | shdr->sh_type = SHT_ORDERED; | |
1945 | ||
1946 | return TRUE; | |
1947 | } | |
1948 | ||
1949 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1950 | need to bump up the number of section headers. */ | |
1951 | ||
1952 | static int | |
a6b96beb AM |
1953 | ppc_elf_additional_program_headers (bfd *abfd, |
1954 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
1955 | { |
1956 | asection *s; | |
1957 | int ret = 0; | |
d1c6de6f | 1958 | |
25dbc73a AM |
1959 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1960 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1961 | ++ret; | |
d1c6de6f | 1962 | |
25dbc73a AM |
1963 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1964 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1965 | ++ret; | |
deaaf2f3 | 1966 | |
25dbc73a AM |
1967 | return ret; |
1968 | } | |
deaaf2f3 | 1969 | |
25dbc73a AM |
1970 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1971 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1972 | that the linker doesn't crater when trying to make more than | |
1973 | 2 sections. */ | |
e656e369 | 1974 | |
b35d266b | 1975 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 1976 | { |
0112cd26 NC |
1977 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1978 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
1979 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1980 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1981 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1982 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
1983 | { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 }, | |
1984 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1985 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1986 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1987 | }; |
1988 | ||
551b43fd AM |
1989 | /* This is what we want for new plt/got. */ |
1990 | static struct bfd_elf_special_section ppc_alt_plt = | |
0112cd26 | 1991 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
1992 | |
1993 | static const struct bfd_elf_special_section * | |
1994 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 1995 | { |
b35d266b | 1996 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
1997 | |
1998 | /* See if this is one of the special sections. */ | |
1999 | if (sec->name == NULL) | |
2000 | return NULL; | |
2001 | ||
2002 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2003 | sec->use_rela_p); | |
2004 | if (ssect != NULL) | |
2005 | { | |
2006 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2007 | ssect = &ppc_alt_plt; | |
2008 | return ssect; | |
2009 | } | |
2010 | ||
2011 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2012 | } | |
25dbc73a AM |
2013 | \f |
2014 | /* Very simple linked list structure for recording apuinfo values. */ | |
2015 | typedef struct apuinfo_list | |
2016 | { | |
2017 | struct apuinfo_list *next; | |
2018 | unsigned long value; | |
2019 | } | |
2020 | apuinfo_list; | |
e656e369 | 2021 | |
25dbc73a | 2022 | static apuinfo_list *head; |
deaaf2f3 | 2023 | |
deaaf2f3 | 2024 | |
25dbc73a AM |
2025 | static void |
2026 | apuinfo_list_init (void) | |
2027 | { | |
2028 | head = NULL; | |
2029 | } | |
9abc968f | 2030 | |
25dbc73a AM |
2031 | static void |
2032 | apuinfo_list_add (unsigned long value) | |
2033 | { | |
2034 | apuinfo_list *entry = head; | |
deaaf2f3 | 2035 | |
25dbc73a AM |
2036 | while (entry != NULL) |
2037 | { | |
2038 | if (entry->value == value) | |
2039 | return; | |
2040 | entry = entry->next; | |
2041 | } | |
b4a38de6 | 2042 | |
25dbc73a AM |
2043 | entry = bfd_malloc (sizeof (* entry)); |
2044 | if (entry == NULL) | |
2045 | return; | |
e656e369 | 2046 | |
25dbc73a AM |
2047 | entry->value = value; |
2048 | entry->next = head; | |
2049 | head = entry; | |
2050 | } | |
9abc968f | 2051 | |
25dbc73a AM |
2052 | static unsigned |
2053 | apuinfo_list_length (void) | |
2054 | { | |
2055 | apuinfo_list *entry; | |
2056 | unsigned long count; | |
9abc968f | 2057 | |
25dbc73a AM |
2058 | for (entry = head, count = 0; |
2059 | entry; | |
2060 | entry = entry->next) | |
2061 | ++ count; | |
e656e369 | 2062 | |
25dbc73a AM |
2063 | return count; |
2064 | } | |
eea6121a | 2065 | |
25dbc73a AM |
2066 | static inline unsigned long |
2067 | apuinfo_list_element (unsigned long number) | |
2068 | { | |
2069 | apuinfo_list * entry; | |
e656e369 | 2070 | |
25dbc73a AM |
2071 | for (entry = head; |
2072 | entry && number --; | |
2073 | entry = entry->next) | |
2074 | ; | |
252b5132 | 2075 | |
25dbc73a AM |
2076 | return entry ? entry->value : 0; |
2077 | } | |
2078 | ||
2079 | static void | |
2080 | apuinfo_list_finish (void) | |
2081 | { | |
2082 | apuinfo_list *entry; | |
2083 | ||
2084 | for (entry = head; entry;) | |
252b5132 | 2085 | { |
25dbc73a AM |
2086 | apuinfo_list *next = entry->next; |
2087 | free (entry); | |
2088 | entry = next; | |
2089 | } | |
9abc968f | 2090 | |
25dbc73a AM |
2091 | head = NULL; |
2092 | } | |
9abc968f | 2093 | |
25dbc73a AM |
2094 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2095 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2096 | |
25dbc73a AM |
2097 | /* Scan the input BFDs and create a linked list of |
2098 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2099 | |
25dbc73a AM |
2100 | static void |
2101 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2102 | { | |
2103 | bfd *ibfd; | |
2104 | asection *asec; | |
2105 | char *buffer; | |
2106 | unsigned num_input_sections; | |
2107 | bfd_size_type output_section_size; | |
2108 | unsigned i; | |
2109 | unsigned num_entries; | |
2110 | unsigned long offset; | |
2111 | unsigned long length; | |
2112 | const char *error_message = NULL; | |
9abc968f | 2113 | |
25dbc73a AM |
2114 | if (link_info == NULL) |
2115 | return; | |
9abc968f | 2116 | |
25dbc73a AM |
2117 | /* Scan the input bfds, looking for apuinfo sections. */ |
2118 | num_input_sections = 0; | |
2119 | output_section_size = 0; | |
252b5132 | 2120 | |
25dbc73a | 2121 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) |
252b5132 | 2122 | { |
25dbc73a AM |
2123 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2124 | if (asec) | |
252b5132 | 2125 | { |
25dbc73a AM |
2126 | ++ num_input_sections; |
2127 | output_section_size += asec->size; | |
252b5132 | 2128 | } |
252b5132 RH |
2129 | } |
2130 | ||
25dbc73a AM |
2131 | /* We need at least one input sections |
2132 | in order to make merging worthwhile. */ | |
2133 | if (num_input_sections < 1) | |
2134 | return; | |
deaaf2f3 | 2135 | |
25dbc73a AM |
2136 | /* Just make sure that the output section exists as well. */ |
2137 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2138 | if (asec == NULL) | |
2139 | return; | |
252b5132 | 2140 | |
25dbc73a AM |
2141 | /* Allocate a buffer for the contents of the input sections. */ |
2142 | buffer = bfd_malloc (output_section_size); | |
2143 | if (buffer == NULL) | |
2144 | return; | |
252b5132 | 2145 | |
25dbc73a AM |
2146 | offset = 0; |
2147 | apuinfo_list_init (); | |
252b5132 | 2148 | |
25dbc73a AM |
2149 | /* Read in the input sections contents. */ |
2150 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
252b5132 | 2151 | { |
25dbc73a AM |
2152 | unsigned long datum; |
2153 | char *ptr; | |
252b5132 | 2154 | |
25dbc73a AM |
2155 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2156 | if (asec == NULL) | |
2157 | continue; | |
252b5132 | 2158 | |
25dbc73a AM |
2159 | length = asec->size; |
2160 | if (length < 24) | |
2161 | { | |
2162 | error_message = _("corrupt or empty %s section in %B"); | |
2163 | goto fail; | |
2164 | } | |
252b5132 | 2165 | |
25dbc73a AM |
2166 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
2167 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
2168 | { | |
2169 | error_message = _("unable to read in %s section from %B"); | |
2170 | goto fail; | |
2171 | } | |
252b5132 | 2172 | |
25dbc73a AM |
2173 | /* Process the contents of the section. */ |
2174 | ptr = buffer + offset; | |
2175 | error_message = _("corrupt %s section in %B"); | |
252b5132 | 2176 | |
25dbc73a AM |
2177 | /* Verify the contents of the header. Note - we have to |
2178 | extract the values this way in order to allow for a | |
2179 | host whose endian-ness is different from the target. */ | |
2180 | datum = bfd_get_32 (ibfd, ptr); | |
2181 | if (datum != sizeof APUINFO_LABEL) | |
2182 | goto fail; | |
252b5132 | 2183 | |
25dbc73a AM |
2184 | datum = bfd_get_32 (ibfd, ptr + 8); |
2185 | if (datum != 0x2) | |
2186 | goto fail; | |
252b5132 | 2187 | |
25dbc73a AM |
2188 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) |
2189 | goto fail; | |
252b5132 | 2190 | |
25dbc73a AM |
2191 | /* Get the number of bytes used for apuinfo entries. */ |
2192 | datum = bfd_get_32 (ibfd, ptr + 4); | |
2193 | if (datum + 20 != length) | |
2194 | goto fail; | |
2195 | ||
2196 | /* Make sure that we do not run off the end of the section. */ | |
2197 | if (offset + length > output_section_size) | |
2198 | goto fail; | |
2199 | ||
2200 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
2201 | for (i = 0; i < datum; i += 4) | |
2202 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
2203 | ||
2204 | /* Update the offset. */ | |
2205 | offset += length; | |
252b5132 RH |
2206 | } |
2207 | ||
25dbc73a | 2208 | error_message = NULL; |
252b5132 | 2209 | |
25dbc73a AM |
2210 | /* Compute the size of the output section. */ |
2211 | num_entries = apuinfo_list_length (); | |
2212 | output_section_size = 20 + num_entries * 4; | |
252b5132 | 2213 | |
25dbc73a AM |
2214 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2215 | ||
2216 | if (! bfd_set_section_size (abfd, asec, output_section_size)) | |
2217 | ibfd = abfd, | |
2218 | error_message = _("warning: unable to set size of %s section in %B"); | |
2219 | ||
2220 | fail: | |
2221 | free (buffer); | |
2222 | ||
2223 | if (error_message) | |
2224 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2225 | } | |
252b5132 | 2226 | |
25dbc73a AM |
2227 | /* Prevent the output section from accumulating the input sections' |
2228 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2229 | |
25dbc73a AM |
2230 | static bfd_boolean |
2231 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2232 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2233 | asection *asec, |
2234 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2235 | { | |
2236 | return (apuinfo_list_length () | |
2237 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
252b5132 RH |
2238 | } |
2239 | ||
25dbc73a AM |
2240 | /* Finally we can generate the output section. */ |
2241 | ||
2242 | static void | |
2243 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2244 | { |
25dbc73a AM |
2245 | bfd_byte *buffer; |
2246 | asection *asec; | |
2247 | unsigned i; | |
2248 | unsigned num_entries; | |
2249 | bfd_size_type length; | |
7619e7c7 | 2250 | |
25dbc73a AM |
2251 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2252 | if (asec == NULL) | |
2253 | return; | |
2254 | ||
2255 | if (apuinfo_list_length () == 0) | |
2256 | return; | |
2257 | ||
2258 | length = asec->size; | |
2259 | if (length < 20) | |
2260 | return; | |
2261 | ||
2262 | buffer = bfd_malloc (length); | |
2263 | if (buffer == NULL) | |
7619e7c7 | 2264 | { |
25dbc73a AM |
2265 | (*_bfd_error_handler) |
2266 | (_("failed to allocate space for new APUinfo section.")); | |
2267 | return; | |
7619e7c7 | 2268 | } |
7619e7c7 | 2269 | |
25dbc73a AM |
2270 | /* Create the apuinfo header. */ |
2271 | num_entries = apuinfo_list_length (); | |
2272 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2273 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2274 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2275 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2276 | |
25dbc73a AM |
2277 | length = 20; |
2278 | for (i = 0; i < num_entries; i++) | |
feee612b | 2279 | { |
25dbc73a AM |
2280 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2281 | length += 4; | |
feee612b | 2282 | } |
feee612b | 2283 | |
25dbc73a AM |
2284 | if (length != asec->size) |
2285 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2286 | |
25dbc73a AM |
2287 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2288 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2289 | |
25dbc73a AM |
2290 | free (buffer); |
2291 | ||
2292 | apuinfo_list_finish (); | |
252b5132 | 2293 | } |
25dbc73a AM |
2294 | \f |
2295 | /* The following functions are specific to the ELF linker, while | |
2296 | functions above are used generally. They appear in this file more | |
2297 | or less in the order in which they are called. eg. | |
2298 | ppc_elf_check_relocs is called early in the link process, | |
2299 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2300 | called. */ | |
252b5132 | 2301 | |
25dbc73a AM |
2302 | /* The PPC linker needs to keep track of the number of relocs that it |
2303 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2304 | This is so that it can later discard them if they are found to be | |
2305 | unnecessary. We store the information in a field extending the | |
2306 | regular ELF linker hash table. */ | |
ae9a127f | 2307 | |
25dbc73a | 2308 | struct ppc_elf_dyn_relocs |
252b5132 | 2309 | { |
25dbc73a | 2310 | struct ppc_elf_dyn_relocs *next; |
252b5132 | 2311 | |
25dbc73a AM |
2312 | /* The input section of the reloc. */ |
2313 | asection *sec; | |
252b5132 | 2314 | |
25dbc73a AM |
2315 | /* Total number of relocs copied for the input section. */ |
2316 | bfd_size_type count; | |
252b5132 | 2317 | |
25dbc73a AM |
2318 | /* Number of pc-relative relocs copied for the input section. */ |
2319 | bfd_size_type pc_count; | |
2320 | }; | |
252b5132 | 2321 | |
a6aa5195 AM |
2322 | /* Track PLT entries needed for a given symbol. We might need more |
2323 | than one glink entry per symbol. */ | |
2324 | struct plt_entry | |
2325 | { | |
2326 | struct plt_entry *next; | |
2327 | ||
2328 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2329 | This field stores the offset into .got2 used to initialise the | |
2330 | GOT pointer reg. It will always be at least 32768 (and for | |
2331 | current gcc this is the only offset used). */ | |
2332 | bfd_vma addend; | |
2333 | ||
2334 | /* The .got2 section. */ | |
2335 | asection *sec; | |
2336 | ||
2337 | /* PLT refcount or offset. */ | |
2338 | union | |
2339 | { | |
2340 | bfd_signed_vma refcount; | |
2341 | bfd_vma offset; | |
2342 | } plt; | |
2343 | ||
2344 | /* .glink stub offset. */ | |
2345 | bfd_vma glink_offset; | |
2346 | }; | |
2347 | ||
25dbc73a AM |
2348 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2349 | selects those that must be copied when linking a shared library, | |
2350 | even when the symbol is local. */ | |
252b5132 | 2351 | |
25dbc73a AM |
2352 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
2353 | ((RTYPE) != R_PPC_REL24 \ | |
2354 | && (RTYPE) != R_PPC_REL14 \ | |
2355 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2356 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2357 | && (RTYPE) != R_PPC_REL32) | |
252b5132 | 2358 | |
25dbc73a AM |
2359 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2360 | copying dynamic variables from a shared lib into an app's dynbss | |
2361 | section, and instead use a dynamic relocation to point into the | |
2362 | shared lib. */ | |
2363 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2364 | |
25dbc73a | 2365 | /* PPC ELF linker hash entry. */ |
252b5132 | 2366 | |
25dbc73a AM |
2367 | struct ppc_elf_link_hash_entry |
2368 | { | |
2369 | struct elf_link_hash_entry elf; | |
252b5132 | 2370 | |
25dbc73a AM |
2371 | /* If this symbol is used in the linker created sections, the processor |
2372 | specific backend uses this field to map the field into the offset | |
2373 | from the beginning of the section. */ | |
2374 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2375 | |
25dbc73a AM |
2376 | /* Track dynamic relocs copied for this symbol. */ |
2377 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
252b5132 | 2378 | |
25dbc73a AM |
2379 | /* Contexts in which symbol is used in the GOT (or TOC). |
2380 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
2381 | corresponding relocs are encountered during check_relocs. | |
2382 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2383 | indicate the corresponding GOT entry type is not needed. */ | |
2384 | #define TLS_GD 1 /* GD reloc. */ | |
2385 | #define TLS_LD 2 /* LD reloc. */ | |
2386 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2387 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2388 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2389 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
2390 | char tls_mask; | |
4dc4a9a5 DJ |
2391 | |
2392 | /* Nonzero if we have seen a small data relocation referring to this | |
2393 | symbol. */ | |
2394 | unsigned char has_sda_refs; | |
25dbc73a | 2395 | }; |
252b5132 | 2396 | |
25dbc73a AM |
2397 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2398 | ||
2399 | /* PPC ELF linker hash table. */ | |
2400 | ||
2401 | struct ppc_elf_link_hash_table | |
2402 | { | |
2403 | struct elf_link_hash_table elf; | |
2404 | ||
2405 | /* Short-cuts to get to dynamic linker sections. */ | |
2406 | asection *got; | |
2407 | asection *relgot; | |
d7128ce4 | 2408 | asection *glink; |
25dbc73a AM |
2409 | asection *plt; |
2410 | asection *relplt; | |
2411 | asection *dynbss; | |
2412 | asection *relbss; | |
2413 | asection *dynsbss; | |
2414 | asection *relsbss; | |
c9a2f333 | 2415 | elf_linker_section_t sdata[2]; |
25dbc73a AM |
2416 | asection *sbss; |
2417 | ||
016687f8 AM |
2418 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
2419 | asection *srelplt2; | |
2420 | ||
2421 | /* The .got.plt section (VxWorks only)*/ | |
2422 | asection *sgotplt; | |
2423 | ||
25dbc73a AM |
2424 | /* Shortcut to .__tls_get_addr. */ |
2425 | struct elf_link_hash_entry *tls_get_addr; | |
252b5132 | 2426 | |
016687f8 AM |
2427 | /* The bfd that forced an old-style PLT. */ |
2428 | bfd *old_bfd; | |
2429 | ||
25dbc73a AM |
2430 | /* TLS local dynamic got entry handling. */ |
2431 | union { | |
2432 | bfd_signed_vma refcount; | |
2433 | bfd_vma offset; | |
2434 | } tlsld_got; | |
252b5132 | 2435 | |
d7128ce4 AM |
2436 | /* Offset of PltResolve function in glink. */ |
2437 | bfd_vma glink_pltresolve; | |
2438 | ||
3b36f7e6 AM |
2439 | /* Size of reserved GOT entries. */ |
2440 | unsigned int got_header_size; | |
2441 | /* Non-zero if allocating the header left a gap. */ | |
2442 | unsigned int got_gap; | |
2443 | ||
4a3dc543 RS |
2444 | /* The type of PLT we have chosen to use. */ |
2445 | enum ppc_elf_plt_type plt_type; | |
2446 | ||
0ba07910 AM |
2447 | /* Set if we should emit symbols for stubs. */ |
2448 | unsigned int emit_stub_syms:1; | |
2449 | ||
9d8504b1 | 2450 | /* True if the target system is VxWorks. */ |
016687f8 | 2451 | unsigned int is_vxworks:1; |
9d8504b1 PB |
2452 | |
2453 | /* The size of PLT entries. */ | |
2454 | int plt_entry_size; | |
2455 | /* The distance between adjacent PLT slots. */ | |
2456 | int plt_slot_size; | |
2457 | /* The size of the first PLT entry. */ | |
2458 | int plt_initial_entry_size; | |
016687f8 AM |
2459 | |
2460 | /* Small local sym to section mapping cache. */ | |
2461 | struct sym_sec_cache sym_sec; | |
25dbc73a | 2462 | }; |
252b5132 | 2463 | |
25dbc73a | 2464 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2465 | |
25dbc73a AM |
2466 | #define ppc_elf_hash_table(p) \ |
2467 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
252b5132 | 2468 | |
25dbc73a | 2469 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2470 | |
25dbc73a AM |
2471 | static struct bfd_hash_entry * |
2472 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2473 | struct bfd_hash_table *table, | |
2474 | const char *string) | |
252b5132 | 2475 | { |
25dbc73a AM |
2476 | /* Allocate the structure if it has not already been allocated by a |
2477 | subclass. */ | |
2478 | if (entry == NULL) | |
2479 | { | |
2480 | entry = bfd_hash_allocate (table, | |
2481 | sizeof (struct ppc_elf_link_hash_entry)); | |
2482 | if (entry == NULL) | |
2483 | return entry; | |
2484 | } | |
252b5132 | 2485 | |
25dbc73a AM |
2486 | /* Call the allocation method of the superclass. */ |
2487 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2488 | if (entry != NULL) | |
2489 | { | |
2490 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2491 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2492 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
2493 | } | |
252b5132 | 2494 | |
25dbc73a | 2495 | return entry; |
252b5132 | 2496 | } |
3dab13f6 | 2497 | |
25dbc73a | 2498 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2499 | |
25dbc73a AM |
2500 | static struct bfd_link_hash_table * |
2501 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2502 | { |
25dbc73a | 2503 | struct ppc_elf_link_hash_table *ret; |
3dab13f6 | 2504 | |
25dbc73a AM |
2505 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2506 | if (ret == NULL) | |
2507 | return NULL; | |
3dab13f6 | 2508 | |
66eb6687 AM |
2509 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2510 | ppc_elf_link_hash_newfunc, | |
2511 | sizeof (struct ppc_elf_link_hash_entry))) | |
3dab13f6 | 2512 | { |
25dbc73a AM |
2513 | free (ret); |
2514 | return NULL; | |
2515 | } | |
58111eb7 | 2516 | |
a6aa5195 AM |
2517 | ret->elf.init_plt_refcount.refcount = 0; |
2518 | ret->elf.init_plt_refcount.glist = NULL; | |
2519 | ret->elf.init_plt_offset.offset = 0; | |
2520 | ret->elf.init_plt_offset.glist = NULL; | |
2521 | ||
c9a2f333 AM |
2522 | ret->sdata[0].name = ".sdata"; |
2523 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2524 | ret->sdata[0].bss_name = ".sbss"; | |
2525 | ||
2526 | ret->sdata[1].name = ".sdata2"; | |
2527 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2528 | ret->sdata[1].bss_name = ".sbss2"; | |
2529 | ||
9d8504b1 PB |
2530 | ret->plt_entry_size = 12; |
2531 | ret->plt_slot_size = 8; | |
2532 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 2533 | |
25dbc73a AM |
2534 | return &ret->elf.root; |
2535 | } | |
3dab13f6 | 2536 | |
9d8504b1 | 2537 | /* Create .got and the related sections. */ |
3dab13f6 | 2538 | |
25dbc73a AM |
2539 | static bfd_boolean |
2540 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2541 | { | |
2542 | struct ppc_elf_link_hash_table *htab; | |
2543 | asection *s; | |
2544 | flagword flags; | |
3dab13f6 | 2545 | |
25dbc73a AM |
2546 | if (!_bfd_elf_create_got_section (abfd, info)) |
2547 | return FALSE; | |
3dab13f6 | 2548 | |
25dbc73a AM |
2549 | htab = ppc_elf_hash_table (info); |
2550 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
2551 | if (s == NULL) | |
2552 | abort (); | |
3dab13f6 | 2553 | |
9d8504b1 PB |
2554 | if (htab->is_vxworks) |
2555 | { | |
2556 | htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt"); | |
2557 | if (!htab->sgotplt) | |
2558 | abort (); | |
2559 | } | |
2560 | else | |
2561 | { | |
2562 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2563 | executable. */ | |
2564 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
2565 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2566 | if (!bfd_set_section_flags (abfd, s, flags)) | |
2567 | return FALSE; | |
2568 | } | |
3dab13f6 | 2569 | |
3b36f7e6 AM |
2570 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2571 | | SEC_LINKER_CREATED | SEC_READONLY); | |
2572 | htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags); | |
25dbc73a | 2573 | if (!htab->relgot |
25dbc73a AM |
2574 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) |
2575 | return FALSE; | |
3dab13f6 | 2576 | |
25dbc73a AM |
2577 | return TRUE; |
2578 | } | |
3dab13f6 | 2579 | |
25dbc73a AM |
2580 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2581 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2582 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2583 | |
25dbc73a AM |
2584 | static bfd_boolean |
2585 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2586 | { | |
2587 | struct ppc_elf_link_hash_table *htab; | |
2588 | asection *s; | |
2589 | flagword flags; | |
3dab13f6 | 2590 | |
25dbc73a | 2591 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2592 | |
25dbc73a AM |
2593 | if (htab->got == NULL |
2594 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
2595 | return FALSE; |
2596 | ||
25dbc73a AM |
2597 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2598 | return FALSE; | |
3dab13f6 | 2599 | |
d7128ce4 AM |
2600 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2601 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2602 | ||
2603 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE); | |
2604 | htab->glink = s; | |
2605 | if (s == NULL | |
2606 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2607 | return FALSE; | |
3dab13f6 | 2608 | |
25dbc73a | 2609 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
3b36f7e6 AM |
2610 | s = bfd_make_section_with_flags (abfd, ".dynsbss", |
2611 | SEC_ALLOC | SEC_LINKER_CREATED); | |
2612 | htab->dynsbss = s; | |
3496cb2a | 2613 | if (s == NULL) |
25dbc73a | 2614 | return FALSE; |
3dab13f6 | 2615 | |
25dbc73a AM |
2616 | if (! info->shared) |
2617 | { | |
2618 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
d7128ce4 | 2619 | s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2620 | htab->relsbss = s; |
25dbc73a | 2621 | if (s == NULL |
25dbc73a AM |
2622 | || ! bfd_set_section_alignment (abfd, s, 2)) |
2623 | return FALSE; | |
2624 | } | |
3dab13f6 | 2625 | |
711de32c RS |
2626 | if (htab->is_vxworks |
2627 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
2628 | return FALSE; | |
9d8504b1 | 2629 | |
25dbc73a AM |
2630 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2631 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
2632 | if (s == NULL) | |
2633 | abort (); | |
3dab13f6 | 2634 | |
3b36f7e6 | 2635 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
2636 | if (htab->plt_type == PLT_VXWORKS) |
2637 | /* The VxWorks PLT is a loaded section with contents. */ | |
2638 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
2639 | return bfd_set_section_flags (abfd, s, flags); |
2640 | } | |
3dab13f6 | 2641 | |
25dbc73a | 2642 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2643 | |
25dbc73a | 2644 | static void |
fcfa13d2 | 2645 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2646 | struct elf_link_hash_entry *dir, |
2647 | struct elf_link_hash_entry *ind) | |
2648 | { | |
2649 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2650 | |
25dbc73a AM |
2651 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2652 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2653 | |
25dbc73a AM |
2654 | if (eind->dyn_relocs != NULL) |
2655 | { | |
2656 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2657 | { |
25dbc73a AM |
2658 | struct ppc_elf_dyn_relocs **pp; |
2659 | struct ppc_elf_dyn_relocs *p; | |
3dab13f6 | 2660 | |
fcfa13d2 | 2661 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
2662 | list. Merge any entries against the same section. */ |
2663 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2664 | { |
25dbc73a AM |
2665 | struct ppc_elf_dyn_relocs *q; |
2666 | ||
2667 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2668 | if (q->sec == p->sec) | |
2669 | { | |
2670 | q->pc_count += p->pc_count; | |
2671 | q->count += p->count; | |
2672 | *pp = p->next; | |
2673 | break; | |
2674 | } | |
2675 | if (q == NULL) | |
2676 | pp = &p->next; | |
3dab13f6 | 2677 | } |
25dbc73a | 2678 | *pp = edir->dyn_relocs; |
3dab13f6 | 2679 | } |
25dbc73a AM |
2680 | |
2681 | edir->dyn_relocs = eind->dyn_relocs; | |
2682 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2683 | } |
3dab13f6 | 2684 | |
25dbc73a | 2685 | edir->tls_mask |= eind->tls_mask; |
4dc4a9a5 | 2686 | edir->has_sda_refs |= eind->has_sda_refs; |
3dab13f6 | 2687 | |
a6aa5195 AM |
2688 | /* If called to transfer flags for a weakdef during processing |
2689 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
2690 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
2691 | if (!(ELIMINATE_COPY_RELOCS | |
2692 | && eind->elf.root.type != bfd_link_hash_indirect | |
2693 | && edir->elf.dynamic_adjusted)) | |
2694 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
2695 | ||
2696 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
2697 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
2698 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
2699 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
2700 | ||
2701 | /* If we were called to copy over info for a weak sym, that's all. */ | |
2702 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
2703 | return; | |
2704 | ||
2705 | /* Copy over the GOT refcount entries that we may have already seen to | |
2706 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
2707 | edir->elf.got.refcount += eind->elf.got.refcount; |
2708 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
2709 | |
2710 | /* And plt entries. */ | |
2711 | if (eind->elf.plt.plist != NULL) | |
2712 | { | |
2713 | if (edir->elf.plt.plist != NULL) | |
2714 | { | |
2715 | struct plt_entry **entp; | |
2716 | struct plt_entry *ent; | |
2717 | ||
2718 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
2719 | { | |
2720 | struct plt_entry *dent; | |
2721 | ||
2722 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
2723 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
2724 | { | |
2725 | dent->plt.refcount += ent->plt.refcount; | |
2726 | *entp = ent->next; | |
2727 | break; | |
2728 | } | |
2729 | if (dent == NULL) | |
2730 | entp = &ent->next; | |
2731 | } | |
2732 | *entp = edir->elf.plt.plist; | |
2733 | } | |
2734 | ||
2735 | edir->elf.plt.plist = eind->elf.plt.plist; | |
2736 | eind->elf.plt.plist = NULL; | |
2737 | } | |
2738 | ||
fcfa13d2 | 2739 | if (eind->elf.dynindx != -1) |
25dbc73a | 2740 | { |
fcfa13d2 AM |
2741 | if (edir->elf.dynindx != -1) |
2742 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
2743 | edir->elf.dynstr_index); | |
a6aa5195 AM |
2744 | edir->elf.dynindx = eind->elf.dynindx; |
2745 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
2746 | eind->elf.dynindx = -1; | |
2747 | eind->elf.dynstr_index = 0; | |
25dbc73a | 2748 | } |
25dbc73a | 2749 | } |
3dab13f6 | 2750 | |
8853c3d3 AM |
2751 | /* Return 1 if target is one of ours. */ |
2752 | ||
2753 | static bfd_boolean | |
2754 | is_ppc_elf_target (const struct bfd_target *targ) | |
2755 | { | |
2756 | extern const bfd_target bfd_elf32_powerpc_vec; | |
7c492719 | 2757 | extern const bfd_target bfd_elf32_powerpc_vxworks_vec; |
8853c3d3 AM |
2758 | extern const bfd_target bfd_elf32_powerpcle_vec; |
2759 | ||
7c492719 RS |
2760 | return (targ == &bfd_elf32_powerpc_vec |
2761 | || targ == &bfd_elf32_powerpc_vxworks_vec | |
2762 | || targ == &bfd_elf32_powerpcle_vec); | |
8853c3d3 AM |
2763 | } |
2764 | ||
25dbc73a AM |
2765 | /* Hook called by the linker routine which adds symbols from an object |
2766 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2767 | |
25dbc73a AM |
2768 | static bfd_boolean |
2769 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2770 | struct bfd_link_info *info, | |
2771 | Elf_Internal_Sym *sym, | |
2772 | const char **namep ATTRIBUTE_UNUSED, | |
2773 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2774 | asection **secp, | |
2775 | bfd_vma *valp) | |
2776 | { | |
2777 | if (sym->st_shndx == SHN_COMMON | |
2778 | && !info->relocatable | |
2779 | && sym->st_size <= elf_gp_size (abfd) | |
d2663f46 | 2780 | && is_ppc_elf_target (info->hash->creator)) |
25dbc73a AM |
2781 | { |
2782 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2783 | put into .sbss. */ | |
2784 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2785 | |
25dbc73a AM |
2786 | htab = ppc_elf_hash_table (info); |
2787 | if (htab->sbss == NULL) | |
2788 | { | |
644285ef | 2789 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2790 | |
644285ef AM |
2791 | if (!htab->elf.dynobj) |
2792 | htab->elf.dynobj = abfd; | |
2793 | ||
3496cb2a L |
2794 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2795 | ".sbss", | |
2796 | flags); | |
2797 | if (htab->sbss == NULL) | |
25dbc73a | 2798 | return FALSE; |
3dab13f6 | 2799 | } |
3dab13f6 | 2800 | |
25dbc73a AM |
2801 | *secp = htab->sbss; |
2802 | *valp = sym->st_size; | |
2803 | } | |
3dab13f6 | 2804 | |
25dbc73a | 2805 | return TRUE; |
3dab13f6 AM |
2806 | } |
2807 | \f | |
046183de AM |
2808 | static bfd_boolean |
2809 | create_sdata_sym (struct ppc_elf_link_hash_table *htab, | |
2810 | elf_linker_section_t *lsect) | |
2811 | { | |
2812 | lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name, | |
2813 | TRUE, FALSE, TRUE); | |
2814 | if (lsect->sym == NULL) | |
2815 | return FALSE; | |
2816 | if (lsect->sym->root.type == bfd_link_hash_new) | |
2817 | lsect->sym->non_elf = 0; | |
2818 | lsect->sym->ref_regular = 1; | |
2819 | return TRUE; | |
2820 | } | |
2821 | ||
c9a2f333 | 2822 | /* Create a special linker section. */ |
25dbc73a | 2823 | |
c9a2f333 | 2824 | static bfd_boolean |
55fd94b0 AM |
2825 | ppc_elf_create_linker_section (bfd *abfd, |
2826 | struct bfd_link_info *info, | |
c9a2f333 AM |
2827 | flagword flags, |
2828 | elf_linker_section_t *lsect) | |
252b5132 | 2829 | { |
58111eb7 | 2830 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
c9a2f333 | 2831 | asection *s; |
58111eb7 | 2832 | |
c9a2f333 AM |
2833 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2834 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
2835 | |
2836 | /* Record the first bfd that needs the special sections. */ | |
2837 | if (!htab->elf.dynobj) | |
2838 | htab->elf.dynobj = abfd; | |
2839 | ||
3496cb2a L |
2840 | s = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2841 | lsect->name, | |
2842 | flags); | |
76750a2f | 2843 | if (s == NULL |
76750a2f | 2844 | || !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) |
c9a2f333 | 2845 | return FALSE; |
76750a2f | 2846 | lsect->section = s; |
58111eb7 | 2847 | |
046183de | 2848 | return create_sdata_sym (htab, lsect); |
252b5132 | 2849 | } |
252b5132 | 2850 | |
25dbc73a AM |
2851 | /* Find a linker generated pointer with a given addend and type. */ |
2852 | ||
2853 | static elf_linker_section_pointers_t * | |
2854 | elf_find_pointer_linker_section | |
2855 | (elf_linker_section_pointers_t *linker_pointers, | |
2856 | bfd_vma addend, | |
2857 | elf_linker_section_t *lsect) | |
252b5132 | 2858 | { |
25dbc73a AM |
2859 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2860 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2861 | return linker_pointers; | |
252b5132 | 2862 | |
25dbc73a AM |
2863 | return NULL; |
2864 | } | |
2865 | ||
2866 | /* Allocate a pointer to live in a linker created section. */ | |
2867 | ||
2868 | static bfd_boolean | |
2869 | elf_create_pointer_linker_section (bfd *abfd, | |
25dbc73a AM |
2870 | elf_linker_section_t *lsect, |
2871 | struct elf_link_hash_entry *h, | |
2872 | const Elf_Internal_Rela *rel) | |
2873 | { | |
2874 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2875 | elf_linker_section_pointers_t *linker_section_ptr; | |
2876 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2877 | bfd_size_type amt; | |
2878 | ||
2879 | BFD_ASSERT (lsect != NULL); | |
2880 | ||
2881 | /* Is this a global symbol? */ | |
2882 | if (h != NULL) | |
2883 | { | |
2884 | struct ppc_elf_link_hash_entry *eh; | |
2885 | ||
2886 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2887 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2888 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2889 | rel->r_addend, | |
2890 | lsect)) | |
2891 | return TRUE; | |
2892 | ||
2893 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2894 | } |
2895 | else | |
2896 | { | |
2897 | /* Allocation of a pointer to a local symbol. */ | |
2898 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2899 | ||
2900 | /* Allocate a table to hold the local symbols if first time. */ | |
2901 | if (!ptr) | |
2902 | { | |
2903 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
2904 | ||
2905 | amt = num_symbols; | |
2906 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2907 | ptr = bfd_zalloc (abfd, amt); | |
2908 | ||
2909 | if (!ptr) | |
2910 | return FALSE; | |
2911 | ||
2912 | elf_local_ptr_offsets (abfd) = ptr; | |
2913 | } | |
2914 | ||
2915 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2916 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2917 | rel->r_addend, | |
2918 | lsect)) | |
2919 | return TRUE; | |
252b5132 | 2920 | |
25dbc73a | 2921 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2922 | } |
41fcb14e | 2923 | |
25dbc73a AM |
2924 | /* Allocate space for a pointer in the linker section, and allocate |
2925 | a new pointer record from internal memory. */ | |
2926 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2927 | amt = sizeof (elf_linker_section_pointers_t); | |
2928 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2929 | |
25dbc73a | 2930 | if (!linker_section_ptr) |
7619e7c7 | 2931 | return FALSE; |
41fcb14e | 2932 | |
25dbc73a AM |
2933 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2934 | linker_section_ptr->addend = rel->r_addend; | |
2935 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2936 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2937 | |
25dbc73a AM |
2938 | linker_section_ptr->offset = lsect->section->size; |
2939 | lsect->section->size += 4; | |
7619e7c7 | 2940 | |
25dbc73a AM |
2941 | #ifdef DEBUG |
2942 | fprintf (stderr, | |
2943 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2944 | lsect->name, (long) linker_section_ptr->offset, | |
2945 | (long) lsect->section->size); | |
2946 | #endif | |
7619e7c7 AM |
2947 | |
2948 | return TRUE; | |
41fcb14e AM |
2949 | } |
2950 | ||
b34976b6 | 2951 | static bfd_boolean |
25dbc73a AM |
2952 | update_local_sym_info (bfd *abfd, |
2953 | Elf_Internal_Shdr *symtab_hdr, | |
2954 | unsigned long r_symndx, | |
2955 | int tls_type) | |
252b5132 | 2956 | { |
25dbc73a AM |
2957 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
2958 | char *local_got_tls_masks; | |
252b5132 | 2959 | |
25dbc73a | 2960 | if (local_got_refcounts == NULL) |
252b5132 | 2961 | { |
25dbc73a AM |
2962 | bfd_size_type size = symtab_hdr->sh_info; |
2963 | ||
2964 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
2965 | local_got_refcounts = bfd_zalloc (abfd, size); | |
2966 | if (local_got_refcounts == NULL) | |
b34976b6 | 2967 | return FALSE; |
25dbc73a | 2968 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2969 | } |
41fcb14e | 2970 | |
25dbc73a AM |
2971 | local_got_refcounts[r_symndx] += 1; |
2972 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
2973 | local_got_tls_masks[r_symndx] |= tls_type; | |
2974 | return TRUE; | |
2975 | } | |
41fcb14e | 2976 | |
a6aa5195 AM |
2977 | static bfd_boolean |
2978 | update_plt_info (bfd *abfd, struct elf_link_hash_entry *h, | |
2979 | asection *sec, bfd_vma addend) | |
2980 | { | |
2981 | struct plt_entry *ent; | |
2982 | ||
2983 | if (addend < 32768) | |
2984 | sec = NULL; | |
2985 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
2986 | if (ent->sec == sec && ent->addend == addend) | |
2987 | break; | |
2988 | if (ent == NULL) | |
2989 | { | |
2990 | bfd_size_type amt = sizeof (*ent); | |
2991 | ent = bfd_alloc (abfd, amt); | |
2992 | if (ent == NULL) | |
2993 | return FALSE; | |
2994 | ent->next = h->plt.plist; | |
2995 | ent->sec = sec; | |
2996 | ent->addend = addend; | |
2997 | ent->plt.refcount = 0; | |
2998 | h->plt.plist = ent; | |
2999 | } | |
3000 | ent->plt.refcount += 1; | |
3001 | return TRUE; | |
3002 | } | |
3003 | ||
3004 | static struct plt_entry * | |
3005 | find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend) | |
3006 | { | |
3007 | struct plt_entry *ent; | |
3008 | ||
3009 | if (addend < 32768) | |
3010 | sec = NULL; | |
3011 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
3012 | if (ent->sec == sec && ent->addend == addend) | |
3013 | break; | |
3014 | return ent; | |
3015 | } | |
3016 | ||
25dbc73a AM |
3017 | static void |
3018 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3019 | { | |
3020 | (*_bfd_error_handler) | |
3021 | (_("%B: relocation %s cannot be used when making a shared object"), | |
3022 | abfd, | |
3023 | ppc_elf_howto_table[r_type]->name); | |
3024 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3025 | } |
3026 | ||
25dbc73a AM |
3027 | /* Look through the relocs for a section during the first phase, and |
3028 | allocate space in the global offset table or procedure linkage | |
3029 | table. */ | |
252b5132 | 3030 | |
b34976b6 | 3031 | static bfd_boolean |
25dbc73a AM |
3032 | ppc_elf_check_relocs (bfd *abfd, |
3033 | struct bfd_link_info *info, | |
3034 | asection *sec, | |
3035 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3036 | { |
7619e7c7 | 3037 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3038 | Elf_Internal_Shdr *symtab_hdr; |
3039 | struct elf_link_hash_entry **sym_hashes; | |
3040 | const Elf_Internal_Rela *rel; | |
3041 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3042 | asection *got2, *sreloc; |
25dbc73a AM |
3043 | |
3044 | if (info->relocatable) | |
3045 | return TRUE; | |
252b5132 | 3046 | |
c87b5a93 AM |
3047 | /* Don't do anything special with non-loaded, non-alloced sections. |
3048 | In particular, any relocs in such sections should not affect GOT | |
3049 | and PLT reference counting (ie. we don't allow them to create GOT | |
3050 | or PLT entries), there's no possibility or desire to optimize TLS | |
3051 | relocs, and there's not much point in propagating relocs to shared | |
3052 | libs that the dynamic linker won't relocate. */ | |
3053 | if ((sec->flags & SEC_ALLOC) == 0) | |
3054 | return TRUE; | |
3055 | ||
252b5132 | 3056 | #ifdef DEBUG |
25dbc73a AM |
3057 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3058 | sec, abfd); | |
252b5132 RH |
3059 | #endif |
3060 | ||
25dbc73a AM |
3061 | /* Initialize howto table if not already done. */ |
3062 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3063 | ppc_elf_howto_init (); | |
3064 | ||
7619e7c7 | 3065 | htab = ppc_elf_hash_table (info); |
25dbc73a AM |
3066 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3067 | sym_hashes = elf_sym_hashes (abfd); | |
a6aa5195 | 3068 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3069 | sreloc = NULL; |
3070 | ||
3071 | rel_end = relocs + sec->reloc_count; | |
3072 | for (rel = relocs; rel < rel_end; rel++) | |
3073 | { | |
3074 | unsigned long r_symndx; | |
3075 | enum elf_ppc_reloc_type r_type; | |
3076 | struct elf_link_hash_entry *h; | |
3077 | int tls_type = 0; | |
3078 | ||
3079 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3080 | if (r_symndx < symtab_hdr->sh_info) | |
3081 | h = NULL; | |
3082 | else | |
973a3492 L |
3083 | { |
3084 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3085 | while (h->root.type == bfd_link_hash_indirect | |
3086 | || h->root.type == bfd_link_hash_warning) | |
3087 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3088 | } | |
25dbc73a AM |
3089 | |
3090 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3091 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3092 | startup code. */ | |
3b36f7e6 AM |
3093 | if (h != NULL |
3094 | && htab->got == NULL | |
3095 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3096 | { |
3b36f7e6 AM |
3097 | if (htab->elf.dynobj == NULL) |
3098 | htab->elf.dynobj = abfd; | |
3099 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3100 | return FALSE; | |
3101 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3102 | } |
252b5132 | 3103 | |
25dbc73a AM |
3104 | r_type = ELF32_R_TYPE (rel->r_info); |
3105 | switch (r_type) | |
3106 | { | |
3107 | case R_PPC_GOT_TLSLD16: | |
3108 | case R_PPC_GOT_TLSLD16_LO: | |
3109 | case R_PPC_GOT_TLSLD16_HI: | |
3110 | case R_PPC_GOT_TLSLD16_HA: | |
3111 | htab->tlsld_got.refcount += 1; | |
3112 | tls_type = TLS_TLS | TLS_LD; | |
3113 | goto dogottls; | |
252b5132 | 3114 | |
25dbc73a AM |
3115 | case R_PPC_GOT_TLSGD16: |
3116 | case R_PPC_GOT_TLSGD16_LO: | |
3117 | case R_PPC_GOT_TLSGD16_HI: | |
3118 | case R_PPC_GOT_TLSGD16_HA: | |
3119 | tls_type = TLS_TLS | TLS_GD; | |
3120 | goto dogottls; | |
3121 | ||
3122 | case R_PPC_GOT_TPREL16: | |
3123 | case R_PPC_GOT_TPREL16_LO: | |
3124 | case R_PPC_GOT_TPREL16_HI: | |
3125 | case R_PPC_GOT_TPREL16_HA: | |
3126 | if (info->shared) | |
3127 | info->flags |= DF_STATIC_TLS; | |
3128 | tls_type = TLS_TLS | TLS_TPREL; | |
3129 | goto dogottls; | |
3130 | ||
3131 | case R_PPC_GOT_DTPREL16: | |
3132 | case R_PPC_GOT_DTPREL16_LO: | |
3133 | case R_PPC_GOT_DTPREL16_HI: | |
3134 | case R_PPC_GOT_DTPREL16_HA: | |
3135 | tls_type = TLS_TLS | TLS_DTPREL; | |
3136 | dogottls: | |
3137 | sec->has_tls_reloc = 1; | |
3138 | /* Fall thru */ | |
252b5132 | 3139 | |
25dbc73a AM |
3140 | /* GOT16 relocations */ |
3141 | case R_PPC_GOT16: | |
3142 | case R_PPC_GOT16_LO: | |
3143 | case R_PPC_GOT16_HI: | |
3144 | case R_PPC_GOT16_HA: | |
3145 | /* This symbol requires a global offset table entry. */ | |
3146 | if (htab->got == NULL) | |
3147 | { | |
3148 | if (htab->elf.dynobj == NULL) | |
3149 | htab->elf.dynobj = abfd; | |
3150 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3151 | return FALSE; | |
3152 | } | |
3153 | if (h != NULL) | |
3154 | { | |
3155 | h->got.refcount += 1; | |
3156 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3157 | } | |
3158 | else | |
3159 | /* This is a global offset table entry for a local symbol. */ | |
3160 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3161 | return FALSE; | |
3162 | break; | |
252b5132 | 3163 | |
25dbc73a AM |
3164 | /* Indirect .sdata relocation. */ |
3165 | case R_PPC_EMB_SDAI16: | |
3166 | if (info->shared) | |
3167 | { | |
3168 | bad_shared_reloc (abfd, r_type); | |
3169 | return FALSE; | |
3170 | } | |
c9a2f333 AM |
3171 | if (htab->sdata[0].section == NULL |
3172 | && !ppc_elf_create_linker_section (abfd, info, 0, | |
3173 | &htab->sdata[0])) | |
3174 | return FALSE; | |
76750a2f AM |
3175 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0], |
3176 | h, rel)) | |
25dbc73a | 3177 | return FALSE; |
046183de AM |
3178 | if (h != NULL) |
3179 | { | |
3180 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3181 | h->non_got_ref = TRUE; | |
3182 | } | |
25dbc73a | 3183 | break; |
252b5132 | 3184 | |
25dbc73a AM |
3185 | /* Indirect .sdata2 relocation. */ |
3186 | case R_PPC_EMB_SDA2I16: | |
3187 | if (info->shared) | |
3188 | { | |
3189 | bad_shared_reloc (abfd, r_type); | |
3190 | return FALSE; | |
3191 | } | |
c9a2f333 AM |
3192 | if (htab->sdata[1].section == NULL |
3193 | && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3194 | &htab->sdata[1])) | |
3195 | return FALSE; | |
76750a2f AM |
3196 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1], |
3197 | h, rel)) | |
25dbc73a | 3198 | return FALSE; |
046183de AM |
3199 | if (h != NULL) |
3200 | { | |
3201 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3202 | h->non_got_ref = TRUE; | |
3203 | } | |
25dbc73a | 3204 | break; |
252b5132 | 3205 | |
25dbc73a | 3206 | case R_PPC_SDAREL16: |
046183de AM |
3207 | if (info->shared) |
3208 | { | |
3209 | bad_shared_reloc (abfd, r_type); | |
3210 | return FALSE; | |
3211 | } | |
3212 | if (htab->sdata[0].sym == NULL | |
3213 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3214 | return FALSE; | |
3215 | if (h != NULL) | |
3216 | { | |
3217 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3218 | h->non_got_ref = TRUE; | |
3219 | } | |
3220 | break; | |
3221 | ||
25dbc73a | 3222 | case R_PPC_EMB_SDA2REL: |
046183de AM |
3223 | if (info->shared) |
3224 | { | |
3225 | bad_shared_reloc (abfd, r_type); | |
3226 | return FALSE; | |
3227 | } | |
3228 | if (htab->sdata[1].sym == NULL | |
3229 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3230 | return FALSE; | |
3231 | if (h != NULL) | |
3232 | { | |
3233 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3234 | h->non_got_ref = TRUE; | |
3235 | } | |
3236 | break; | |
3237 | ||
25dbc73a AM |
3238 | case R_PPC_EMB_SDA21: |
3239 | case R_PPC_EMB_RELSDA: | |
046183de AM |
3240 | if (info->shared) |
3241 | { | |
3242 | bad_shared_reloc (abfd, r_type); | |
3243 | return FALSE; | |
3244 | } | |
3245 | if (htab->sdata[0].sym == NULL | |
3246 | && !create_sdata_sym (htab, &htab->sdata[0])) | |
3247 | return FALSE; | |
3248 | if (htab->sdata[1].sym == NULL | |
3249 | && !create_sdata_sym (htab, &htab->sdata[1])) | |
3250 | return FALSE; | |
3251 | if (h != NULL) | |
3252 | { | |
3253 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3254 | h->non_got_ref = TRUE; | |
3255 | } | |
3256 | break; | |
3257 | ||
25dbc73a AM |
3258 | case R_PPC_EMB_NADDR32: |
3259 | case R_PPC_EMB_NADDR16: | |
3260 | case R_PPC_EMB_NADDR16_LO: | |
3261 | case R_PPC_EMB_NADDR16_HI: | |
3262 | case R_PPC_EMB_NADDR16_HA: | |
3263 | if (info->shared) | |
3264 | { | |
3265 | bad_shared_reloc (abfd, r_type); | |
3266 | return FALSE; | |
3267 | } | |
4dc4a9a5 | 3268 | if (h != NULL) |
046183de | 3269 | h->non_got_ref = TRUE; |
25dbc73a | 3270 | break; |
252b5132 | 3271 | |
25dbc73a AM |
3272 | case R_PPC_PLT32: |
3273 | case R_PPC_PLTREL24: | |
3274 | case R_PPC_PLTREL32: | |
3275 | case R_PPC_PLT16_LO: | |
3276 | case R_PPC_PLT16_HI: | |
3277 | case R_PPC_PLT16_HA: | |
3278 | #ifdef DEBUG | |
3279 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3280 | #endif | |
3281 | /* This symbol requires a procedure linkage table entry. We | |
3282 | actually build the entry in finish_dynamic_symbol, | |
3283 | because this might be a case of linking PIC code without | |
3284 | linking in any dynamic objects, in which case we don't | |
3285 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 3286 | |
25dbc73a AM |
3287 | if (h == NULL) |
3288 | { | |
3289 | /* It does not make sense to have a procedure linkage | |
3290 | table entry for a local symbol. */ | |
3291 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " | |
3292 | "local symbol"), | |
3293 | abfd, | |
3294 | sec, | |
3295 | (long) rel->r_offset, | |
3296 | ppc_elf_howto_table[r_type]->name); | |
3297 | bfd_set_error (bfd_error_bad_value); | |
3298 | return FALSE; | |
3299 | } | |
a6aa5195 AM |
3300 | else |
3301 | { | |
016687f8 | 3302 | bfd_vma addend = 0; |
ee05f2fe | 3303 | |
016687f8 AM |
3304 | if (r_type == R_PPC_PLTREL24) |
3305 | { | |
3306 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
3307 | addend = rel->r_addend; | |
3308 | } | |
a6aa5195 AM |
3309 | h->needs_plt = 1; |
3310 | if (!update_plt_info (abfd, h, got2, addend)) | |
3311 | return FALSE; | |
3312 | } | |
25dbc73a | 3313 | break; |
ee05f2fe | 3314 | |
25dbc73a AM |
3315 | /* The following relocations don't need to propagate the |
3316 | relocation if linking a shared object since they are | |
3317 | section relative. */ | |
3318 | case R_PPC_SECTOFF: | |
3319 | case R_PPC_SECTOFF_LO: | |
3320 | case R_PPC_SECTOFF_HI: | |
3321 | case R_PPC_SECTOFF_HA: | |
3322 | case R_PPC_DTPREL16: | |
3323 | case R_PPC_DTPREL16_LO: | |
3324 | case R_PPC_DTPREL16_HI: | |
3325 | case R_PPC_DTPREL16_HA: | |
3326 | case R_PPC_TOC16: | |
3327 | break; | |
252b5132 | 3328 | |
d7128ce4 AM |
3329 | case R_PPC_REL16: |
3330 | case R_PPC_REL16_LO: | |
3331 | case R_PPC_REL16_HI: | |
3332 | case R_PPC_REL16_HA: | |
016687f8 | 3333 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
3334 | break; |
3335 | ||
a6aa5195 | 3336 | /* These are just markers. */ |
25dbc73a AM |
3337 | case R_PPC_TLS: |
3338 | case R_PPC_EMB_MRKREF: | |
3339 | case R_PPC_NONE: | |
3340 | case R_PPC_max: | |
3341 | break; | |
252b5132 | 3342 | |
25dbc73a AM |
3343 | /* These should only appear in dynamic objects. */ |
3344 | case R_PPC_COPY: | |
3345 | case R_PPC_GLOB_DAT: | |
3346 | case R_PPC_JMP_SLOT: | |
3347 | case R_PPC_RELATIVE: | |
3348 | break; | |
252b5132 | 3349 | |
25dbc73a AM |
3350 | /* These aren't handled yet. We'll report an error later. */ |
3351 | case R_PPC_ADDR30: | |
3352 | case R_PPC_EMB_RELSEC16: | |
3353 | case R_PPC_EMB_RELST_LO: | |
3354 | case R_PPC_EMB_RELST_HI: | |
3355 | case R_PPC_EMB_RELST_HA: | |
3356 | case R_PPC_EMB_BIT_FLD: | |
3357 | break; | |
252b5132 | 3358 | |
25dbc73a AM |
3359 | /* This refers only to functions defined in the shared library. */ |
3360 | case R_PPC_LOCAL24PC: | |
4a3dc543 | 3361 | if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
3362 | { |
3363 | htab->plt_type = PLT_OLD; | |
3364 | htab->old_bfd = abfd; | |
3365 | } | |
25dbc73a | 3366 | break; |
252b5132 | 3367 | |
25dbc73a AM |
3368 | /* This relocation describes the C++ object vtable hierarchy. |
3369 | Reconstruct it for later use during GC. */ | |
3370 | case R_PPC_GNU_VTINHERIT: | |
3371 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3372 | return FALSE; | |
3373 | break; | |
252b5132 | 3374 | |
25dbc73a AM |
3375 | /* This relocation describes which C++ vtable entries are actually |
3376 | used. Record for later use during GC. */ | |
3377 | case R_PPC_GNU_VTENTRY: | |
3378 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
3379 | return FALSE; | |
3380 | break; | |
252b5132 | 3381 | |
25dbc73a AM |
3382 | /* We shouldn't really be seeing these. */ |
3383 | case R_PPC_TPREL32: | |
3384 | if (info->shared) | |
3385 | info->flags |= DF_STATIC_TLS; | |
3386 | goto dodyn; | |
252b5132 | 3387 | |
25dbc73a AM |
3388 | /* Nor these. */ |
3389 | case R_PPC_DTPMOD32: | |
3390 | case R_PPC_DTPREL32: | |
3391 | goto dodyn; | |
252b5132 | 3392 | |
25dbc73a AM |
3393 | case R_PPC_TPREL16: |
3394 | case R_PPC_TPREL16_LO: | |
3395 | case R_PPC_TPREL16_HI: | |
3396 | case R_PPC_TPREL16_HA: | |
3397 | if (info->shared) | |
3398 | info->flags |= DF_STATIC_TLS; | |
3399 | goto dodyn; | |
ee05f2fe | 3400 | |
9edfd1af AM |
3401 | case R_PPC_REL32: |
3402 | if (h == NULL | |
3403 | && got2 != NULL | |
3404 | && (sec->flags & SEC_CODE) != 0 | |
3405 | && (info->shared || info->pie) | |
4a3dc543 | 3406 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
3407 | { |
3408 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3409 | the start of a function, which assembles to a REL32 | |
3410 | reference to .got2. If we detect one of these, then | |
3411 | force the old PLT layout because the linker cannot | |
3412 | reliably deduce the GOT pointer value needed for | |
3413 | PLT call stubs. */ | |
3414 | asection *s; | |
3415 | ||
3416 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
3417 | r_symndx); | |
3418 | if (s == got2) | |
016687f8 AM |
3419 | { |
3420 | htab->plt_type = PLT_OLD; | |
3421 | htab->old_bfd = abfd; | |
3422 | } | |
9edfd1af | 3423 | } |
7123df0e | 3424 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 3425 | break; |
7123df0e | 3426 | goto dodyn1; |
9edfd1af | 3427 | |
25dbc73a AM |
3428 | case R_PPC_REL24: |
3429 | case R_PPC_REL14: | |
3430 | case R_PPC_REL14_BRTAKEN: | |
3431 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3432 | if (h == NULL) |
25dbc73a | 3433 | break; |
7123df0e | 3434 | if (h == htab->elf.hgot) |
d7128ce4 | 3435 | { |
7123df0e | 3436 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
3437 | { |
3438 | htab->plt_type = PLT_OLD; | |
3439 | htab->old_bfd = abfd; | |
3440 | } | |
d7128ce4 AM |
3441 | break; |
3442 | } | |
25dbc73a | 3443 | /* fall through */ |
ee05f2fe | 3444 | |
25dbc73a AM |
3445 | case R_PPC_ADDR32: |
3446 | case R_PPC_ADDR24: | |
3447 | case R_PPC_ADDR16: | |
3448 | case R_PPC_ADDR16_LO: | |
3449 | case R_PPC_ADDR16_HI: | |
3450 | case R_PPC_ADDR16_HA: | |
3451 | case R_PPC_ADDR14: | |
3452 | case R_PPC_ADDR14_BRTAKEN: | |
3453 | case R_PPC_ADDR14_BRNTAKEN: | |
3454 | case R_PPC_UADDR32: | |
3455 | case R_PPC_UADDR16: | |
7123df0e | 3456 | dodyn1: |
25dbc73a AM |
3457 | if (h != NULL && !info->shared) |
3458 | { | |
3459 | /* We may need a plt entry if the symbol turns out to be | |
3460 | a function defined in a dynamic object. */ | |
a6aa5195 AM |
3461 | if (!update_plt_info (abfd, h, NULL, 0)) |
3462 | return FALSE; | |
7fce784e | 3463 | |
25dbc73a AM |
3464 | /* We may need a copy reloc too. */ |
3465 | h->non_got_ref = 1; | |
3466 | } | |
7619e7c7 | 3467 | |
25dbc73a AM |
3468 | dodyn: |
3469 | /* If we are creating a shared library, and this is a reloc | |
3470 | against a global symbol, or a non PC relative reloc | |
3471 | against a local symbol, then we need to copy the reloc | |
3472 | into the shared library. However, if we are linking with | |
3473 | -Bsymbolic, we do not need to copy a reloc against a | |
3474 | global symbol which is defined in an object we are | |
3475 | including in the link (i.e., DEF_REGULAR is set). At | |
3476 | this point we have not seen all the input files, so it is | |
3477 | possible that DEF_REGULAR is not set now but will be set | |
3478 | later (it is never cleared). In case of a weak definition, | |
3479 | DEF_REGULAR may be cleared later by a strong definition in | |
3480 | a shared library. We account for that possibility below by | |
3481 | storing information in the dyn_relocs field of the hash | |
3482 | table entry. A similar situation occurs when creating | |
3483 | shared libraries and symbol visibility changes render the | |
3484 | symbol local. | |
7619e7c7 | 3485 | |
25dbc73a AM |
3486 | If on the other hand, we are creating an executable, we |
3487 | may need to keep relocations for symbols satisfied by a | |
3488 | dynamic library if we manage to avoid copy relocs for the | |
3489 | symbol. */ | |
3490 | if ((info->shared | |
3491 | && (MUST_BE_DYN_RELOC (r_type) | |
3492 | || (h != NULL | |
3493 | && (! info->symbolic | |
3494 | || h->root.type == bfd_link_hash_defweak | |
3495 | || !h->def_regular)))) | |
3496 | || (ELIMINATE_COPY_RELOCS | |
3497 | && !info->shared | |
25dbc73a AM |
3498 | && h != NULL |
3499 | && (h->root.type == bfd_link_hash_defweak | |
3500 | || !h->def_regular))) | |
3501 | { | |
3502 | struct ppc_elf_dyn_relocs *p; | |
3503 | struct ppc_elf_dyn_relocs **head; | |
7619e7c7 | 3504 | |
25dbc73a AM |
3505 | #ifdef DEBUG |
3506 | fprintf (stderr, | |
3507 | "ppc_elf_check_relocs needs to " | |
3508 | "create relocation for %s\n", | |
3509 | (h && h->root.root.string | |
3510 | ? h->root.root.string : "<unknown>")); | |
3511 | #endif | |
3512 | if (sreloc == NULL) | |
3513 | { | |
3514 | const char *name; | |
7619e7c7 | 3515 | |
25dbc73a AM |
3516 | name = (bfd_elf_string_from_elf_section |
3517 | (abfd, | |
3518 | elf_elfheader (abfd)->e_shstrndx, | |
3519 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3520 | if (name == NULL) | |
3521 | return FALSE; | |
7619e7c7 | 3522 | |
0112cd26 | 3523 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
25dbc73a AM |
3524 | && strcmp (bfd_get_section_name (abfd, sec), |
3525 | name + 5) == 0); | |
7619e7c7 | 3526 | |
c9a2f333 AM |
3527 | if (htab->elf.dynobj == NULL) |
3528 | htab->elf.dynobj = abfd; | |
25dbc73a AM |
3529 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
3530 | if (sreloc == NULL) | |
3531 | { | |
3532 | flagword flags; | |
7619e7c7 | 3533 | |
25dbc73a | 3534 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
c87b5a93 AM |
3535 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
3536 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
3537 | sreloc = bfd_make_section_with_flags (htab->elf.dynobj, |
3538 | name, | |
3539 | flags); | |
25dbc73a | 3540 | if (sreloc == NULL |
25dbc73a AM |
3541 | || ! bfd_set_section_alignment (htab->elf.dynobj, |
3542 | sreloc, 2)) | |
3543 | return FALSE; | |
3544 | } | |
3545 | elf_section_data (sec)->sreloc = sreloc; | |
3546 | } | |
7619e7c7 | 3547 | |
25dbc73a AM |
3548 | /* If this is a global symbol, we count the number of |
3549 | relocations we need for this symbol. */ | |
3550 | if (h != NULL) | |
3551 | { | |
3552 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
3553 | } | |
3554 | else | |
3555 | { | |
3556 | /* Track dynamic relocs needed for local syms too. | |
3557 | We really need local syms available to do this | |
3558 | easily. Oh well. */ | |
7619e7c7 | 3559 | |
25dbc73a | 3560 | asection *s; |
6edfbbad DJ |
3561 | void *vpp; |
3562 | ||
25dbc73a AM |
3563 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
3564 | sec, r_symndx); | |
3565 | if (s == NULL) | |
3566 | return FALSE; | |
7fce784e | 3567 | |
6edfbbad DJ |
3568 | vpp = &elf_section_data (s)->local_dynrel; |
3569 | head = (struct ppc_elf_dyn_relocs **) vpp; | |
25dbc73a | 3570 | } |
7fce784e | 3571 | |
25dbc73a AM |
3572 | p = *head; |
3573 | if (p == NULL || p->sec != sec) | |
3574 | { | |
3575 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3576 | if (p == NULL) | |
3577 | return FALSE; | |
3578 | p->next = *head; | |
3579 | *head = p; | |
3580 | p->sec = sec; | |
3581 | p->count = 0; | |
3582 | p->pc_count = 0; | |
3583 | } | |
3584 | ||
3585 | p->count += 1; | |
3586 | if (!MUST_BE_DYN_RELOC (r_type)) | |
3587 | p->pc_count += 1; | |
7619e7c7 | 3588 | } |
25dbc73a AM |
3589 | |
3590 | break; | |
7619e7c7 AM |
3591 | } |
3592 | } | |
ee05f2fe | 3593 | |
25dbc73a AM |
3594 | return TRUE; |
3595 | } | |
3596 | \f | |
34c8bcba JM |
3597 | |
3598 | /* Merge object attributes from IBFD into OBFD. Raise an error if | |
3599 | there are conflicting attributes. */ | |
3600 | static bfd_boolean | |
3601 | ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
3602 | { | |
3603 | obj_attribute *in_attr; | |
3604 | obj_attribute *out_attr; | |
3605 | ||
3606 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
3607 | { | |
3608 | /* This is the first object. Copy the attributes. */ | |
3609 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
3610 | ||
3611 | /* Use the Tag_null value to indicate the attributes have been | |
3612 | initialized. */ | |
3613 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
3614 | ||
3615 | return TRUE; | |
3616 | } | |
3617 | ||
3618 | /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge | |
3619 | non-conflicting ones. */ | |
3620 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
3621 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
3622 | if (in_attr[Tag_GNU_Power_ABI_FP].i != out_attr[Tag_GNU_Power_ABI_FP].i) | |
3623 | { | |
3624 | out_attr[Tag_GNU_Power_ABI_FP].type = 1; | |
3625 | if (out_attr[Tag_GNU_Power_ABI_FP].i == 0) | |
3626 | out_attr[Tag_GNU_Power_ABI_FP].i = in_attr[Tag_GNU_Power_ABI_FP].i; | |
3627 | else if (in_attr[Tag_GNU_Power_ABI_FP].i == 0) | |
3628 | ; | |
3629 | else if (out_attr[Tag_GNU_Power_ABI_FP].i == 1 | |
3630 | && in_attr[Tag_GNU_Power_ABI_FP].i == 2) | |
3631 | _bfd_error_handler | |
3632 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); | |
3633 | else if (out_attr[Tag_GNU_Power_ABI_FP].i == 2 | |
3634 | && in_attr[Tag_GNU_Power_ABI_FP].i == 1) | |
3635 | _bfd_error_handler | |
3636 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); | |
3637 | else if (in_attr[Tag_GNU_Power_ABI_FP].i > 2) | |
3638 | _bfd_error_handler | |
3639 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
3640 | in_attr[Tag_GNU_Power_ABI_FP].i); | |
3641 | else | |
3642 | _bfd_error_handler | |
3643 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
3644 | out_attr[Tag_GNU_Power_ABI_FP].i); | |
3645 | } | |
3646 | ||
3647 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
3648 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
3649 | ||
3650 | return TRUE; | |
3651 | } | |
3652 | ||
8853c3d3 AM |
3653 | /* Merge backend specific data from an object file to the output |
3654 | object file when linking. */ | |
3655 | ||
3656 | static bfd_boolean | |
3657 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
3658 | { | |
3659 | flagword old_flags; | |
3660 | flagword new_flags; | |
3661 | bfd_boolean error; | |
3662 | ||
3663 | if (!is_ppc_elf_target (ibfd->xvec) | |
3664 | || !is_ppc_elf_target (obfd->xvec)) | |
3665 | return TRUE; | |
3666 | ||
3667 | /* Check if we have the same endianess. */ | |
3668 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
3669 | return FALSE; | |
3670 | ||
34c8bcba JM |
3671 | if (!ppc_elf_merge_obj_attributes (ibfd, obfd)) |
3672 | return FALSE; | |
3673 | ||
8853c3d3 AM |
3674 | new_flags = elf_elfheader (ibfd)->e_flags; |
3675 | old_flags = elf_elfheader (obfd)->e_flags; | |
3676 | if (!elf_flags_init (obfd)) | |
3677 | { | |
3678 | /* First call, no flags set. */ | |
3679 | elf_flags_init (obfd) = TRUE; | |
3680 | elf_elfheader (obfd)->e_flags = new_flags; | |
3681 | } | |
3682 | ||
3683 | /* Compatible flags are ok. */ | |
3684 | else if (new_flags == old_flags) | |
3685 | ; | |
3686 | ||
3687 | /* Incompatible flags. */ | |
3688 | else | |
3689 | { | |
3690 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3691 | to be linked with either. */ | |
3692 | error = FALSE; | |
3693 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3694 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3695 | { | |
3696 | error = TRUE; | |
3697 | (*_bfd_error_handler) | |
3698 | (_("%B: compiled with -mrelocatable and linked with " | |
3699 | "modules compiled normally"), ibfd); | |
3700 | } | |
3701 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3702 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3703 | { | |
3704 | error = TRUE; | |
3705 | (*_bfd_error_handler) | |
3706 | (_("%B: compiled normally and linked with " | |
3707 | "modules compiled with -mrelocatable"), ibfd); | |
3708 | } | |
3709 | ||
3710 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3711 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3712 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3713 | ||
3714 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3715 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3716 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3717 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3718 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3719 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3720 | ||
3721 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3722 | any module uses it. */ | |
3723 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3724 | ||
3725 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3726 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3727 | ||
3728 | /* Warn about any other mismatches. */ | |
3729 | if (new_flags != old_flags) | |
3730 | { | |
3731 | error = TRUE; | |
3732 | (*_bfd_error_handler) | |
3733 | (_("%B: uses different e_flags (0x%lx) fields " | |
3734 | "than previous modules (0x%lx)"), | |
3735 | ibfd, (long) new_flags, (long) old_flags); | |
3736 | } | |
3737 | ||
3738 | if (error) | |
3739 | { | |
3740 | bfd_set_error (bfd_error_bad_value); | |
3741 | return FALSE; | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | return TRUE; | |
3746 | } | |
3747 | \f | |
d7128ce4 AM |
3748 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
3749 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
3750 | int | |
3751 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3752 | struct bfd_link_info *info, | |
016687f8 | 3753 | enum ppc_elf_plt_type plt_style, |
0ba07910 | 3754 | int emit_stub_syms) |
d7128ce4 AM |
3755 | { |
3756 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 3757 | flagword flags; |
d7128ce4 AM |
3758 | |
3759 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
3760 | |
3761 | if (htab->plt_type == PLT_UNSET) | |
016687f8 AM |
3762 | { |
3763 | if (plt_style == PLT_OLD) | |
3764 | htab->plt_type = PLT_OLD; | |
3765 | else | |
3766 | { | |
3767 | bfd *ibfd; | |
3768 | enum ppc_elf_plt_type plt_type = plt_style; | |
3769 | ||
3770 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
3771 | Use the old style bss plt if a file makes plt calls | |
3772 | without using the new relocs, and if ld isn't given | |
3773 | --secure-plt and we never see REL16 relocs. */ | |
3774 | if (plt_type == PLT_UNSET) | |
3775 | plt_type = PLT_OLD; | |
60b31e8d | 3776 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next) |
016687f8 AM |
3777 | if (is_ppc_elf_target (ibfd->xvec)) |
3778 | { | |
3779 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
3780 | plt_type = PLT_NEW; | |
3781 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
3782 | { | |
3783 | plt_type = PLT_OLD; | |
3784 | htab->old_bfd = ibfd; | |
3785 | break; | |
3786 | } | |
3787 | } | |
3788 | htab->plt_type = plt_type; | |
3789 | } | |
3790 | } | |
3791 | if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW) | |
3792 | info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd); | |
d7128ce4 | 3793 | |
0ba07910 AM |
3794 | htab->emit_stub_syms = emit_stub_syms; |
3795 | ||
4a3dc543 | 3796 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 3797 | |
4a3dc543 | 3798 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
3799 | { |
3800 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3801 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
3802 | |
3803 | /* The new PLT is a loaded section. */ | |
3804 | if (htab->plt != NULL | |
3805 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
3806 | return -1; | |
3807 | ||
3808 | /* The new GOT is not executable. */ | |
3809 | if (htab->got != NULL | |
3810 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
3811 | return -1; | |
d7128ce4 AM |
3812 | } |
3813 | else | |
3814 | { | |
3815 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
3816 | if (htab->glink != NULL |
3817 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
3818 | return -1; | |
d7128ce4 | 3819 | } |
4a3dc543 | 3820 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
3821 | } |
3822 | \f | |
25dbc73a AM |
3823 | /* Return the section that should be marked against GC for a given |
3824 | relocation. */ | |
586119b3 | 3825 | |
25dbc73a AM |
3826 | static asection * |
3827 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 3828 | struct bfd_link_info *info, |
25dbc73a AM |
3829 | Elf_Internal_Rela *rel, |
3830 | struct elf_link_hash_entry *h, | |
3831 | Elf_Internal_Sym *sym) | |
3832 | { | |
3833 | if (h != NULL) | |
07adf181 AM |
3834 | switch (ELF32_R_TYPE (rel->r_info)) |
3835 | { | |
3836 | case R_PPC_GNU_VTINHERIT: | |
3837 | case R_PPC_GNU_VTENTRY: | |
3838 | return NULL; | |
3839 | } | |
3840 | ||
3841 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 3842 | } |
a876ecf9 | 3843 | |
25dbc73a AM |
3844 | /* Update the got, plt and dynamic reloc reference counts for the |
3845 | section being removed. */ | |
3846 | ||
3847 | static bfd_boolean | |
3848 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
3849 | struct bfd_link_info *info, | |
3850 | asection *sec, | |
3851 | const Elf_Internal_Rela *relocs) | |
3852 | { | |
3853 | struct ppc_elf_link_hash_table *htab; | |
3854 | Elf_Internal_Shdr *symtab_hdr; | |
3855 | struct elf_link_hash_entry **sym_hashes; | |
3856 | bfd_signed_vma *local_got_refcounts; | |
3857 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 3858 | asection *got2; |
25dbc73a | 3859 | |
c87b5a93 AM |
3860 | if ((sec->flags & SEC_ALLOC) == 0) |
3861 | return TRUE; | |
3862 | ||
25dbc73a AM |
3863 | elf_section_data (sec)->local_dynrel = NULL; |
3864 | ||
3865 | htab = ppc_elf_hash_table (info); | |
3866 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3867 | sym_hashes = elf_sym_hashes (abfd); | |
3868 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 3869 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3870 | |
3871 | relend = relocs + sec->reloc_count; | |
3872 | for (rel = relocs; rel < relend; rel++) | |
3873 | { | |
3874 | unsigned long r_symndx; | |
3875 | enum elf_ppc_reloc_type r_type; | |
3876 | struct elf_link_hash_entry *h = NULL; | |
3877 | ||
3878 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3879 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 3880 | { |
25dbc73a AM |
3881 | struct ppc_elf_dyn_relocs **pp, *p; |
3882 | struct ppc_elf_link_hash_entry *eh; | |
3883 | ||
3884 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3885 | while (h->root.type == bfd_link_hash_indirect | |
3886 | || h->root.type == bfd_link_hash_warning) | |
3887 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3888 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3889 | ||
3890 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3891 | if (p->sec == sec) | |
3892 | { | |
3893 | /* Everything must go for SEC. */ | |
3894 | *pp = p->next; | |
3895 | break; | |
3896 | } | |
a876ecf9 | 3897 | } |
ee05f2fe | 3898 | |
25dbc73a AM |
3899 | r_type = ELF32_R_TYPE (rel->r_info); |
3900 | switch (r_type) | |
ee05f2fe | 3901 | { |
25dbc73a AM |
3902 | case R_PPC_GOT_TLSLD16: |
3903 | case R_PPC_GOT_TLSLD16_LO: | |
3904 | case R_PPC_GOT_TLSLD16_HI: | |
3905 | case R_PPC_GOT_TLSLD16_HA: | |
3906 | htab->tlsld_got.refcount -= 1; | |
3907 | /* Fall thru */ | |
3908 | ||
3909 | case R_PPC_GOT_TLSGD16: | |
3910 | case R_PPC_GOT_TLSGD16_LO: | |
3911 | case R_PPC_GOT_TLSGD16_HI: | |
3912 | case R_PPC_GOT_TLSGD16_HA: | |
3913 | case R_PPC_GOT_TPREL16: | |
3914 | case R_PPC_GOT_TPREL16_LO: | |
3915 | case R_PPC_GOT_TPREL16_HI: | |
3916 | case R_PPC_GOT_TPREL16_HA: | |
3917 | case R_PPC_GOT_DTPREL16: | |
3918 | case R_PPC_GOT_DTPREL16_LO: | |
3919 | case R_PPC_GOT_DTPREL16_HI: | |
3920 | case R_PPC_GOT_DTPREL16_HA: | |
3921 | case R_PPC_GOT16: | |
3922 | case R_PPC_GOT16_LO: | |
3923 | case R_PPC_GOT16_HI: | |
3924 | case R_PPC_GOT16_HA: | |
3925 | if (h != NULL) | |
ee05f2fe | 3926 | { |
25dbc73a AM |
3927 | if (h->got.refcount > 0) |
3928 | h->got.refcount--; | |
ee05f2fe | 3929 | } |
25dbc73a AM |
3930 | else if (local_got_refcounts != NULL) |
3931 | { | |
3932 | if (local_got_refcounts[r_symndx] > 0) | |
3933 | local_got_refcounts[r_symndx]--; | |
3934 | } | |
3935 | break; | |
ee05f2fe | 3936 | |
25dbc73a AM |
3937 | case R_PPC_REL24: |
3938 | case R_PPC_REL14: | |
3939 | case R_PPC_REL14_BRTAKEN: | |
3940 | case R_PPC_REL14_BRNTAKEN: | |
3941 | case R_PPC_REL32: | |
3b36f7e6 | 3942 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
3943 | break; |
3944 | /* Fall thru */ | |
ee05f2fe | 3945 | |
25dbc73a AM |
3946 | case R_PPC_ADDR32: |
3947 | case R_PPC_ADDR24: | |
3948 | case R_PPC_ADDR16: | |
3949 | case R_PPC_ADDR16_LO: | |
3950 | case R_PPC_ADDR16_HI: | |
3951 | case R_PPC_ADDR16_HA: | |
3952 | case R_PPC_ADDR14: | |
3953 | case R_PPC_ADDR14_BRTAKEN: | |
3954 | case R_PPC_ADDR14_BRNTAKEN: | |
3955 | case R_PPC_UADDR32: | |
3956 | case R_PPC_UADDR16: | |
87538722 AM |
3957 | if (info->shared) |
3958 | break; | |
3959 | ||
25dbc73a AM |
3960 | case R_PPC_PLT32: |
3961 | case R_PPC_PLTREL24: | |
87538722 | 3962 | case R_PPC_PLTREL32: |
25dbc73a AM |
3963 | case R_PPC_PLT16_LO: |
3964 | case R_PPC_PLT16_HI: | |
3965 | case R_PPC_PLT16_HA: | |
3966 | if (h != NULL) | |
3967 | { | |
a6aa5195 AM |
3968 | bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0; |
3969 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
3970 | if (ent->plt.refcount > 0) | |
3971 | ent->plt.refcount -= 1; | |
25dbc73a AM |
3972 | } |
3973 | break; | |
ee05f2fe | 3974 | |
25dbc73a AM |
3975 | default: |
3976 | break; | |
3977 | } | |
7fce784e | 3978 | } |
7fce784e AS |
3979 | return TRUE; |
3980 | } | |
25dbc73a AM |
3981 | \f |
3982 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ | |
7fce784e | 3983 | |
25dbc73a AM |
3984 | asection * |
3985 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) | |
7fce784e | 3986 | { |
25dbc73a | 3987 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 3988 | |
25dbc73a | 3989 | htab = ppc_elf_hash_table (info); |
4a3dc543 | 3990 | if (htab->plt_type == PLT_NEW |
d7128ce4 AM |
3991 | && htab->plt != NULL |
3992 | && htab->plt->output_section != NULL) | |
3993 | { | |
3994 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
3995 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
3996 | } | |
3997 | ||
25dbc73a AM |
3998 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3999 | FALSE, FALSE, TRUE); | |
25dbc73a | 4000 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
4001 | } |
4002 | ||
25dbc73a AM |
4003 | /* Run through all the TLS relocs looking for optimization |
4004 | opportunities. */ | |
252b5132 | 4005 | |
25dbc73a AM |
4006 | bfd_boolean |
4007 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
4008 | struct bfd_link_info *info) | |
252b5132 | 4009 | { |
7fce784e | 4010 | bfd *ibfd; |
25dbc73a AM |
4011 | asection *sec; |
4012 | struct ppc_elf_link_hash_table *htab; | |
252b5132 | 4013 | |
25dbc73a AM |
4014 | if (info->relocatable || info->shared) |
4015 | return TRUE; | |
252b5132 | 4016 | |
7619e7c7 | 4017 | htab = ppc_elf_hash_table (info); |
25dbc73a | 4018 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
252b5132 | 4019 | { |
25dbc73a AM |
4020 | Elf_Internal_Sym *locsyms = NULL; |
4021 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7619e7c7 | 4022 | |
25dbc73a AM |
4023 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
4024 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
4025 | { | |
4026 | Elf_Internal_Rela *relstart, *rel, *relend; | |
4027 | int expecting_tls_get_addr; | |
252b5132 | 4028 | |
25dbc73a AM |
4029 | /* Read the relocations. */ |
4030 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4031 | info->keep_memory); | |
4032 | if (relstart == NULL) | |
4033 | return FALSE; | |
7619e7c7 | 4034 | |
25dbc73a AM |
4035 | expecting_tls_get_addr = 0; |
4036 | relend = relstart + sec->reloc_count; | |
4037 | for (rel = relstart; rel < relend; rel++) | |
4038 | { | |
4039 | enum elf_ppc_reloc_type r_type; | |
4040 | unsigned long r_symndx; | |
4041 | struct elf_link_hash_entry *h = NULL; | |
4042 | char *tls_mask; | |
4043 | char tls_set, tls_clear; | |
4044 | bfd_boolean is_local; | |
7fce784e | 4045 | |
25dbc73a AM |
4046 | r_symndx = ELF32_R_SYM (rel->r_info); |
4047 | if (r_symndx >= symtab_hdr->sh_info) | |
4048 | { | |
4049 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4050 | |
25dbc73a AM |
4051 | sym_hashes = elf_sym_hashes (ibfd); |
4052 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4053 | while (h->root.type == bfd_link_hash_indirect | |
4054 | || h->root.type == bfd_link_hash_warning) | |
4055 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4056 | } | |
7619e7c7 | 4057 | |
25dbc73a AM |
4058 | is_local = FALSE; |
4059 | if (h == NULL | |
4060 | || !h->def_dynamic) | |
4061 | is_local = TRUE; | |
7619e7c7 | 4062 | |
25dbc73a AM |
4063 | r_type = ELF32_R_TYPE (rel->r_info); |
4064 | switch (r_type) | |
7619e7c7 | 4065 | { |
25dbc73a AM |
4066 | case R_PPC_GOT_TLSLD16: |
4067 | case R_PPC_GOT_TLSLD16_LO: | |
4068 | case R_PPC_GOT_TLSLD16_HI: | |
4069 | case R_PPC_GOT_TLSLD16_HA: | |
4070 | /* These relocs should never be against a symbol | |
4071 | defined in a shared lib. Leave them alone if | |
4072 | that turns out to be the case. */ | |
4073 | expecting_tls_get_addr = 0; | |
4074 | htab->tlsld_got.refcount -= 1; | |
4075 | if (!is_local) | |
4076 | continue; | |
4077 | ||
4078 | /* LD -> LE */ | |
4079 | tls_set = 0; | |
4080 | tls_clear = TLS_LD; | |
4081 | expecting_tls_get_addr = 1; | |
4082 | break; | |
4083 | ||
4084 | case R_PPC_GOT_TLSGD16: | |
4085 | case R_PPC_GOT_TLSGD16_LO: | |
4086 | case R_PPC_GOT_TLSGD16_HI: | |
4087 | case R_PPC_GOT_TLSGD16_HA: | |
4088 | if (is_local) | |
4089 | /* GD -> LE */ | |
4090 | tls_set = 0; | |
4091 | else | |
4092 | /* GD -> IE */ | |
4093 | tls_set = TLS_TLS | TLS_TPRELGD; | |
4094 | tls_clear = TLS_GD; | |
4095 | expecting_tls_get_addr = 1; | |
4096 | break; | |
4097 | ||
4098 | case R_PPC_GOT_TPREL16: | |
4099 | case R_PPC_GOT_TPREL16_LO: | |
4100 | case R_PPC_GOT_TPREL16_HI: | |
4101 | case R_PPC_GOT_TPREL16_HA: | |
4102 | expecting_tls_get_addr = 0; | |
4103 | if (is_local) | |
4104 | { | |
4105 | /* IE -> LE */ | |
4106 | tls_set = 0; | |
4107 | tls_clear = TLS_TPREL; | |
4108 | break; | |
4109 | } | |
4110 | else | |
4111 | continue; | |
4112 | ||
4113 | case R_PPC_REL14: | |
4114 | case R_PPC_REL14_BRTAKEN: | |
4115 | case R_PPC_REL14_BRNTAKEN: | |
4116 | case R_PPC_REL24: | |
4117 | if (expecting_tls_get_addr | |
4118 | && h != NULL | |
4119 | && h == htab->tls_get_addr) | |
4120 | { | |
a6aa5195 AM |
4121 | struct plt_entry *ent = find_plt_ent (h, NULL, 0); |
4122 | if (ent != NULL && ent->plt.refcount > 0) | |
4123 | ent->plt.refcount -= 1; | |
25dbc73a AM |
4124 | } |
4125 | expecting_tls_get_addr = 0; | |
4126 | continue; | |
4127 | ||
4128 | default: | |
4129 | expecting_tls_get_addr = 0; | |
4130 | continue; | |
7619e7c7 | 4131 | } |
25dbc73a AM |
4132 | |
4133 | if (h != NULL) | |
7619e7c7 | 4134 | { |
25dbc73a AM |
4135 | if (tls_set == 0) |
4136 | { | |
4137 | /* We managed to get rid of a got entry. */ | |
4138 | if (h->got.refcount > 0) | |
4139 | h->got.refcount -= 1; | |
4140 | } | |
4141 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4142 | } | |
4143 | else | |
4144 | { | |
4145 | Elf_Internal_Sym *sym; | |
4146 | bfd_signed_vma *lgot_refs; | |
4147 | char *lgot_masks; | |
4148 | ||
4149 | if (locsyms == NULL) | |
4150 | { | |
4151 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4152 | if (locsyms == NULL) | |
4153 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4154 | symtab_hdr->sh_info, | |
4155 | 0, NULL, NULL, NULL); | |
4156 | if (locsyms == NULL) | |
4157 | { | |
4158 | if (elf_section_data (sec)->relocs != relstart) | |
4159 | free (relstart); | |
4160 | return FALSE; | |
4161 | } | |
4162 | } | |
4163 | sym = locsyms + r_symndx; | |
4164 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4165 | if (lgot_refs == NULL) | |
4166 | abort (); | |
4167 | if (tls_set == 0) | |
4168 | { | |
4169 | /* We managed to get rid of a got entry. */ | |
4170 | if (lgot_refs[r_symndx] > 0) | |
4171 | lgot_refs[r_symndx] -= 1; | |
4172 | } | |
4173 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
4174 | tls_mask = &lgot_masks[r_symndx]; | |
7619e7c7 | 4175 | } |
25dbc73a AM |
4176 | |
4177 | *tls_mask |= tls_set; | |
4178 | *tls_mask &= ~tls_clear; | |
7619e7c7 | 4179 | } |
25dbc73a AM |
4180 | |
4181 | if (elf_section_data (sec)->relocs != relstart) | |
4182 | free (relstart); | |
7619e7c7 | 4183 | } |
25dbc73a AM |
4184 | |
4185 | if (locsyms != NULL | |
4186 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4187 | { | |
4188 | if (!info->keep_memory) | |
4189 | free (locsyms); | |
4190 | else | |
4191 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4192 | } | |
7fce784e | 4193 | } |
25dbc73a AM |
4194 | return TRUE; |
4195 | } | |
4196 | \f | |
4197 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4198 | regular object. The current definition is in some section of the | |
4199 | dynamic object, but we're not including those sections. We have to | |
4200 | change the definition to something the rest of the link can | |
4201 | understand. */ | |
7fce784e | 4202 | |
25dbc73a AM |
4203 | static bfd_boolean |
4204 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4205 | struct elf_link_hash_entry *h) | |
4206 | { | |
4207 | struct ppc_elf_link_hash_table *htab; | |
4208 | asection *s; | |
7fce784e | 4209 | |
25dbc73a AM |
4210 | #ifdef DEBUG |
4211 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4212 | h->root.root.string); | |
4213 | #endif | |
252b5132 | 4214 | |
25dbc73a AM |
4215 | /* Make sure we know what is going on here. */ |
4216 | htab = ppc_elf_hash_table (info); | |
4217 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4218 | && (h->needs_plt | |
4219 | || h->u.weakdef != NULL | |
4220 | || (h->def_dynamic | |
4221 | && h->ref_regular | |
4222 | && !h->def_regular))); | |
252b5132 | 4223 | |
25dbc73a AM |
4224 | /* Deal with function syms. */ |
4225 | if (h->type == STT_FUNC | |
4226 | || h->needs_plt) | |
4227 | { | |
4228 | /* Clear procedure linkage table information for any symbol that | |
4229 | won't need a .plt entry. */ | |
a6aa5195 AM |
4230 | struct plt_entry *ent; |
4231 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4232 | if (ent->plt.refcount > 0) | |
4233 | break; | |
4234 | if (ent == NULL | |
25dbc73a AM |
4235 | || SYMBOL_CALLS_LOCAL (info, h) |
4236 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4237 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 4238 | { |
25dbc73a | 4239 | /* A PLT entry is not required/allowed when: |
252b5132 | 4240 | |
25dbc73a AM |
4241 | 1. We are not using ld.so; because then the PLT entry |
4242 | can't be set up, so we can't use one. In this case, | |
4243 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4244 | |
25dbc73a AM |
4245 | 2. GC has rendered the entry unused. |
4246 | ||
4247 | 3. We know for certain that a call to this symbol | |
4248 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4249 | h->plt.plist = NULL; |
25dbc73a AM |
4250 | h->needs_plt = 0; |
4251 | } | |
4252 | return TRUE; | |
252b5132 | 4253 | } |
25dbc73a | 4254 | else |
a6aa5195 | 4255 | h->plt.plist = NULL; |
252b5132 | 4256 | |
25dbc73a AM |
4257 | /* If this is a weak symbol, and there is a real definition, the |
4258 | processor independent code will have arranged for us to see the | |
4259 | real definition first, and we can just use the same value. */ | |
4260 | if (h->u.weakdef != NULL) | |
252b5132 | 4261 | { |
25dbc73a AM |
4262 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4263 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4264 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4265 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4266 | if (ELIMINATE_COPY_RELOCS) | |
4267 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
4268 | return TRUE; | |
4269 | } | |
dc810e39 | 4270 | |
25dbc73a AM |
4271 | /* This is a reference to a symbol defined by a dynamic object which |
4272 | is not a function. */ | |
252b5132 | 4273 | |
25dbc73a AM |
4274 | /* If we are creating a shared library, we must presume that the |
4275 | only references to the symbol are via the global offset table. | |
4276 | For such cases we need not do anything here; the relocations will | |
4277 | be handled correctly by relocate_section. */ | |
4278 | if (info->shared) | |
4279 | return TRUE; | |
252b5132 | 4280 | |
25dbc73a AM |
4281 | /* If there are no references to this symbol that do not use the |
4282 | GOT, we don't need to generate a copy reloc. */ | |
4283 | if (!h->non_got_ref) | |
4284 | return TRUE; | |
4285 | ||
4dc4a9a5 DJ |
4286 | /* If we didn't find any dynamic relocs in read-only sections, then we'll |
4287 | be keeping the dynamic relocs and avoiding the copy reloc. We can't | |
4288 | do this if there are any small data relocations. */ | |
4289 | if (ELIMINATE_COPY_RELOCS | |
4290 | && !ppc_elf_hash_entry (h)->has_sda_refs) | |
25dbc73a AM |
4291 | { |
4292 | struct ppc_elf_dyn_relocs *p; | |
4293 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
252b5132 | 4294 | { |
25dbc73a AM |
4295 | s = p->sec->output_section; |
4296 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4297 | break; | |
252b5132 RH |
4298 | } |
4299 | ||
25dbc73a | 4300 | if (p == NULL) |
252b5132 | 4301 | { |
25dbc73a AM |
4302 | h->non_got_ref = 0; |
4303 | return TRUE; | |
252b5132 RH |
4304 | } |
4305 | } | |
4306 | ||
909272ee AM |
4307 | if (h->size == 0) |
4308 | { | |
4309 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4310 | h->root.root.string); | |
4311 | return TRUE; | |
4312 | } | |
4313 | ||
25dbc73a AM |
4314 | /* We must allocate the symbol in our .dynbss section, which will |
4315 | become part of the .bss section of the executable. There will be | |
4316 | an entry for this symbol in the .dynsym section. The dynamic | |
4317 | object will contain position independent code, so all references | |
4318 | from the dynamic object to this symbol will go through the global | |
4319 | offset table. The dynamic linker will use the .dynsym entry to | |
4320 | determine the address it must put in the global offset table, so | |
4321 | both the dynamic object and the regular object will refer to the | |
4322 | same memory location for the variable. | |
4323 | ||
4dc4a9a5 DJ |
4324 | Of course, if the symbol is referenced using SDAREL relocs, we |
4325 | must instead allocate it in .sbss. */ | |
25dbc73a | 4326 | |
4dc4a9a5 | 4327 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4328 | s = htab->dynsbss; |
4329 | else | |
4330 | s = htab->dynbss; | |
4331 | BFD_ASSERT (s != NULL); | |
4332 | ||
4333 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
4334 | copy the initial value out of the dynamic object and into the | |
4335 | runtime process image. We need to remember the offset into the | |
4336 | .rela.bss section we are going to use. */ | |
4337 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4338 | { | |
4339 | asection *srel; | |
4340 | ||
4dc4a9a5 | 4341 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
4342 | srel = htab->relsbss; |
4343 | else | |
4344 | srel = htab->relbss; | |
4345 | BFD_ASSERT (srel != NULL); | |
4346 | srel->size += sizeof (Elf32_External_Rela); | |
4347 | h->needs_copy = 1; | |
4348 | } | |
7619e7c7 | 4349 | |
027297b7 | 4350 | return _bfd_elf_adjust_dynamic_copy (h, s); |
25dbc73a AM |
4351 | } |
4352 | \f | |
ac39eb42 AM |
4353 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
4354 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
4355 | specifying the addend on the plt relocation. For -fpic code, the sym | |
4356 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
4357 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
4358 | |
4359 | static bfd_boolean | |
4360 | add_stub_sym (struct plt_entry *ent, | |
4361 | struct elf_link_hash_entry *h, | |
ac39eb42 | 4362 | struct bfd_link_info *info) |
0ba07910 AM |
4363 | { |
4364 | struct elf_link_hash_entry *sh; | |
4365 | size_t len1, len2, len3; | |
4366 | char *name; | |
ac39eb42 AM |
4367 | const char *stub; |
4368 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
4369 | ||
4370 | if (info->shared || info->pie) | |
4371 | stub = ".plt_pic32."; | |
4372 | else | |
4373 | stub = ".plt_call32."; | |
0ba07910 AM |
4374 | |
4375 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 4376 | len2 = strlen (stub); |
0ba07910 AM |
4377 | len3 = 0; |
4378 | if (ent->sec) | |
4379 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 4380 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
4381 | if (name == NULL) |
4382 | return FALSE; | |
4383 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
4384 | if (ent->sec) | |
4385 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
4386 | memcpy (name + 8 + len3, stub, len2); |
4387 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
4388 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
4389 | if (sh == NULL) | |
4390 | return FALSE; | |
4391 | if (sh->root.type == bfd_link_hash_new) | |
4392 | { | |
4393 | sh->root.type = bfd_link_hash_defined; | |
4394 | sh->root.u.def.section = htab->glink; | |
4395 | sh->root.u.def.value = ent->glink_offset; | |
4396 | sh->ref_regular = 1; | |
4397 | sh->def_regular = 1; | |
4398 | sh->ref_regular_nonweak = 1; | |
4399 | sh->forced_local = 1; | |
4400 | sh->non_elf = 0; | |
4401 | } | |
4402 | return TRUE; | |
4403 | } | |
4404 | ||
3b36f7e6 AM |
4405 | /* Allocate NEED contiguous space in .got, and return the offset. |
4406 | Handles allocation of the got header when crossing 32k. */ | |
4407 | ||
4408 | static bfd_vma | |
4409 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
4410 | { | |
4411 | bfd_vma where; | |
4a3dc543 | 4412 | unsigned int max_before_header; |
3b36f7e6 | 4413 | |
4a3dc543 | 4414 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
4415 | { |
4416 | where = htab->got->size; | |
4417 | htab->got->size += need; | |
4418 | } | |
3b36f7e6 AM |
4419 | else |
4420 | { | |
4a3dc543 RS |
4421 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
4422 | if (need <= htab->got_gap) | |
3b36f7e6 | 4423 | { |
4a3dc543 RS |
4424 | where = max_before_header - htab->got_gap; |
4425 | htab->got_gap -= need; | |
4426 | } | |
4427 | else | |
4428 | { | |
4429 | if (htab->got->size + need > max_before_header | |
4430 | && htab->got->size <= max_before_header) | |
4431 | { | |
4432 | htab->got_gap = max_before_header - htab->got->size; | |
4433 | htab->got->size = max_before_header + htab->got_header_size; | |
4434 | } | |
4435 | where = htab->got->size; | |
4436 | htab->got->size += need; | |
3b36f7e6 | 4437 | } |
3b36f7e6 AM |
4438 | } |
4439 | return where; | |
4440 | } | |
4441 | ||
25dbc73a | 4442 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 4443 | |
b34976b6 | 4444 | static bfd_boolean |
25dbc73a | 4445 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 4446 | { |
25dbc73a AM |
4447 | struct bfd_link_info *info = inf; |
4448 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 4449 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 4450 | struct ppc_elf_dyn_relocs *p; |
252b5132 | 4451 | |
25dbc73a | 4452 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 4453 | return TRUE; |
252b5132 | 4454 | |
25dbc73a AM |
4455 | if (h->root.type == bfd_link_hash_warning) |
4456 | /* When warning symbols are created, they **replace** the "real" | |
4457 | entry in the hash table, thus we never get to see the real | |
4458 | symbol in a hash traversal. So look at it now. */ | |
4459 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e47cd125 | 4460 | |
7619e7c7 | 4461 | htab = ppc_elf_hash_table (info); |
a6aa5195 | 4462 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4463 | { |
a6aa5195 AM |
4464 | struct plt_entry *ent; |
4465 | bfd_boolean doneone = FALSE; | |
28e99bb6 AM |
4466 | bfd_vma plt_offset = 0, glink_offset = 0; |
4467 | ||
a6aa5195 AM |
4468 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
4469 | if (ent->plt.refcount > 0) | |
4470 | { | |
4471 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4472 | if (h->dynindx == -1 | |
4473 | && !h->forced_local) | |
4474 | { | |
4475 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4476 | return FALSE; | |
4477 | } | |
252b5132 | 4478 | |
a6aa5195 AM |
4479 | if (info->shared |
4480 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
4481 | { | |
4482 | asection *s = htab->plt; | |
7619e7c7 | 4483 | |
4a3dc543 | 4484 | if (htab->plt_type == PLT_NEW) |
a6aa5195 | 4485 | { |
a6aa5195 | 4486 | if (!doneone) |
28e99bb6 AM |
4487 | { |
4488 | plt_offset = s->size; | |
4489 | s->size += 4; | |
4490 | } | |
4491 | ent->plt.offset = plt_offset; | |
d7128ce4 | 4492 | |
a6aa5195 | 4493 | s = htab->glink; |
28e99bb6 AM |
4494 | if (!doneone || info->shared || info->pie) |
4495 | { | |
4496 | glink_offset = s->size; | |
4497 | s->size += GLINK_ENTRY_SIZE; | |
4498 | } | |
4499 | if (!doneone | |
4500 | && !info->shared | |
a6aa5195 AM |
4501 | && !h->def_regular) |
4502 | { | |
4503 | h->root.u.def.section = s; | |
28e99bb6 | 4504 | h->root.u.def.value = glink_offset; |
a6aa5195 | 4505 | } |
28e99bb6 | 4506 | ent->glink_offset = glink_offset; |
0ba07910 AM |
4507 | |
4508 | if (htab->emit_stub_syms | |
ac39eb42 | 4509 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 4510 | return FALSE; |
a6aa5195 AM |
4511 | } |
4512 | else | |
4513 | { | |
a6aa5195 AM |
4514 | if (!doneone) |
4515 | { | |
28e99bb6 AM |
4516 | /* If this is the first .plt entry, make room |
4517 | for the special first entry. */ | |
4518 | if (s->size == 0) | |
9d8504b1 | 4519 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
4520 | |
4521 | /* The PowerPC PLT is actually composed of two | |
4522 | parts, the first part is 2 words (for a load | |
4523 | and a jump), and then there is a remaining | |
4524 | word available at the end. */ | |
9d8504b1 PB |
4525 | plt_offset = (htab->plt_initial_entry_size |
4526 | + (htab->plt_slot_size | |
4527 | * ((s->size | |
4528 | - htab->plt_initial_entry_size) | |
4529 | / htab->plt_entry_size))); | |
28e99bb6 AM |
4530 | |
4531 | /* If this symbol is not defined in a regular | |
4532 | file, and we are not generating a shared | |
4533 | library, then set the symbol to this location | |
4534 | in the .plt. This is required to make | |
4535 | function pointers compare as equal between | |
4536 | the normal executable and the shared library. */ | |
4537 | if (! info->shared | |
4538 | && !h->def_regular) | |
4539 | { | |
4540 | h->root.u.def.section = s; | |
4541 | h->root.u.def.value = plt_offset; | |
4542 | } | |
4543 | ||
9d8504b1 PB |
4544 | /* Make room for this entry. */ |
4545 | s->size += htab->plt_entry_size; | |
4546 | /* After the 8192nd entry, room for two entries | |
4547 | is allocated. */ | |
4a3dc543 | 4548 | if (htab->plt_type == PLT_OLD |
9d8504b1 PB |
4549 | && (s->size - htab->plt_initial_entry_size) |
4550 | / htab->plt_entry_size | |
4551 | > PLT_NUM_SINGLE_ENTRIES) | |
4552 | s->size += htab->plt_entry_size; | |
a6aa5195 | 4553 | } |
28e99bb6 | 4554 | ent->plt.offset = plt_offset; |
a6aa5195 | 4555 | } |
25dbc73a | 4556 | |
a6aa5195 AM |
4557 | /* We also need to make an entry in the .rela.plt section. */ |
4558 | if (!doneone) | |
4559 | { | |
4560 | htab->relplt->size += sizeof (Elf32_External_Rela); | |
9d8504b1 | 4561 | |
4a3dc543 | 4562 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
4563 | { |
4564 | /* Allocate space for the unloaded relocations. */ | |
4565 | if (!info->shared) | |
4566 | { | |
4567 | if (ent->plt.offset | |
4568 | == (bfd_vma) htab->plt_initial_entry_size) | |
4569 | { | |
4570 | htab->srelplt2->size | |
4571 | += sizeof (Elf32_External_Rela) | |
4572 | * VXWORKS_PLTRESOLVE_RELOCS; | |
4573 | } | |
4574 | ||
4575 | htab->srelplt2->size | |
4576 | += sizeof (Elf32_External_Rela) | |
4577 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS; | |
4578 | } | |
4579 | ||
4580 | /* Every PLT entry has an associated GOT entry in | |
4581 | .got.plt. */ | |
4582 | htab->sgotplt->size += 4; | |
4583 | } | |
a6aa5195 AM |
4584 | doneone = TRUE; |
4585 | } | |
4586 | } | |
4587 | else | |
4588 | ent->plt.offset = (bfd_vma) -1; | |
a6aa5195 | 4589 | } |
2ce859a1 AM |
4590 | else |
4591 | ent->plt.offset = (bfd_vma) -1; | |
4592 | ||
4593 | if (!doneone) | |
4594 | { | |
4595 | h->plt.plist = NULL; | |
4596 | h->needs_plt = 0; | |
4597 | } | |
25dbc73a AM |
4598 | } |
4599 | else | |
4600 | { | |
a6aa5195 | 4601 | h->plt.plist = NULL; |
25dbc73a AM |
4602 | h->needs_plt = 0; |
4603 | } | |
4604 | ||
4605 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4606 | if (eh->elf.got.refcount > 0) | |
4607 | { | |
4608 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4609 | if (eh->elf.dynindx == -1 | |
4610 | && !eh->elf.forced_local) | |
4611 | { | |
4612 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 4613 | return FALSE; |
25dbc73a | 4614 | } |
252b5132 | 4615 | |
25dbc73a AM |
4616 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
4617 | && !eh->elf.def_dynamic) | |
4618 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ | |
4619 | eh->elf.got.offset = (bfd_vma) -1; | |
4620 | else | |
4621 | { | |
4622 | bfd_boolean dyn; | |
3b36f7e6 | 4623 | unsigned int need = 0; |
25dbc73a | 4624 | if ((eh->tls_mask & TLS_TLS) != 0) |
252b5132 | 4625 | { |
25dbc73a | 4626 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 | 4627 | need += 8; |
25dbc73a | 4628 | if ((eh->tls_mask & TLS_GD) != 0) |
3b36f7e6 | 4629 | need += 8; |
25dbc73a | 4630 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4631 | need += 4; |
25dbc73a | 4632 | if ((eh->tls_mask & TLS_DTPREL) != 0) |
3b36f7e6 | 4633 | need += 4; |
252b5132 | 4634 | } |
25dbc73a | 4635 | else |
3b36f7e6 AM |
4636 | need += 4; |
4637 | eh->elf.got.offset = allocate_got (htab, need); | |
25dbc73a AM |
4638 | dyn = htab->elf.dynamic_sections_created; |
4639 | if ((info->shared | |
4640 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
4641 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
4642 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 4643 | { |
3b36f7e6 AM |
4644 | /* All the entries we allocated need relocs. |
4645 | Except LD only needs one. */ | |
25dbc73a | 4646 | if ((eh->tls_mask & TLS_LD) != 0) |
3b36f7e6 AM |
4647 | need -= 4; |
4648 | htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4); | |
252b5132 | 4649 | } |
25dbc73a AM |
4650 | } |
4651 | } | |
4652 | else | |
4653 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 4654 | |
25dbc73a AM |
4655 | if (eh->dyn_relocs == NULL) |
4656 | return TRUE; | |
252b5132 | 4657 | |
25dbc73a AM |
4658 | /* In the shared -Bsymbolic case, discard space allocated for |
4659 | dynamic pc-relative relocs against symbols which turn out to be | |
4660 | defined in regular objects. For the normal shared case, discard | |
4661 | space for relocs that have become local due to symbol visibility | |
4662 | changes. */ | |
4663 | ||
4664 | if (info->shared) | |
4665 | { | |
4666 | /* Relocs that use pc_count are those that appear on a call insn, | |
4667 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
4668 | generated via assembly. We want calls to protected symbols to | |
4669 | resolve directly to the function rather than going via the plt. | |
4670 | If people want function pointer comparisons to work as expected | |
4671 | then they should avoid writing weird assembly. */ | |
4672 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
4673 | { | |
4674 | struct ppc_elf_dyn_relocs **pp; | |
4675 | ||
4676 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 4677 | { |
25dbc73a AM |
4678 | p->count -= p->pc_count; |
4679 | p->pc_count = 0; | |
4680 | if (p->count == 0) | |
4681 | *pp = p->next; | |
4682 | else | |
4683 | pp = &p->next; | |
252b5132 | 4684 | } |
25dbc73a | 4685 | } |
252b5132 | 4686 | |
25dbc73a AM |
4687 | /* Also discard relocs on undefined weak syms with non-default |
4688 | visibility. */ | |
cab87ef9 AM |
4689 | if (eh->dyn_relocs != NULL |
4690 | && h->root.type == bfd_link_hash_undefweak) | |
25dbc73a | 4691 | { |
dfbb6ac9 AM |
4692 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
4693 | eh->dyn_relocs = NULL; | |
4694 | ||
4695 | /* Make sure undefined weak symbols are output as a dynamic | |
4696 | symbol in PIEs. */ | |
4697 | else if (h->dynindx == -1 | |
4698 | && !h->forced_local) | |
4699 | { | |
4700 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4701 | return FALSE; | |
4702 | } | |
25dbc73a AM |
4703 | } |
4704 | } | |
4705 | else if (ELIMINATE_COPY_RELOCS) | |
4706 | { | |
4707 | /* For the non-shared case, discard space for relocs against | |
4708 | symbols which turn out to need copy relocs or are not | |
4709 | dynamic. */ | |
7619e7c7 | 4710 | |
25dbc73a AM |
4711 | if (!h->non_got_ref |
4712 | && h->def_dynamic | |
4713 | && !h->def_regular) | |
4714 | { | |
4715 | /* Make sure this symbol is output as a dynamic symbol. | |
4716 | Undefined weak syms won't yet be marked as dynamic. */ | |
4717 | if (h->dynindx == -1 | |
4718 | && !h->forced_local) | |
4719 | { | |
4720 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
4721 | return FALSE; | |
4722 | } | |
7619e7c7 | 4723 | |
25dbc73a AM |
4724 | /* If that succeeded, we know we'll be keeping all the |
4725 | relocs. */ | |
4726 | if (h->dynindx != -1) | |
4727 | goto keep; | |
4728 | } | |
252b5132 | 4729 | |
25dbc73a | 4730 | eh->dyn_relocs = NULL; |
252b5132 | 4731 | |
25dbc73a AM |
4732 | keep: ; |
4733 | } | |
252b5132 | 4734 | |
25dbc73a AM |
4735 | /* Finally, allocate space. */ |
4736 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4737 | { | |
4738 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
4739 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
4740 | } | |
252b5132 | 4741 | |
25dbc73a AM |
4742 | return TRUE; |
4743 | } | |
7619e7c7 | 4744 | |
25dbc73a | 4745 | /* Find any dynamic relocs that apply to read-only sections. */ |
7619e7c7 | 4746 | |
25dbc73a AM |
4747 | static bfd_boolean |
4748 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) | |
4749 | { | |
4750 | struct ppc_elf_dyn_relocs *p; | |
7619e7c7 | 4751 | |
25dbc73a AM |
4752 | if (h->root.type == bfd_link_hash_indirect) |
4753 | return TRUE; | |
252b5132 | 4754 | |
25dbc73a AM |
4755 | if (h->root.type == bfd_link_hash_warning) |
4756 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 4757 | |
25dbc73a AM |
4758 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) |
4759 | { | |
4760 | asection *s = p->sec->output_section; | |
ee05f2fe | 4761 | |
25dbc73a AM |
4762 | if (s != NULL |
4763 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
4764 | == (SEC_READONLY | SEC_ALLOC))) | |
4765 | { | |
4766 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
ee05f2fe | 4767 | |
25dbc73a AM |
4768 | /* Not an error, just cut short the traversal. */ |
4769 | return FALSE; | |
4770 | } | |
4771 | } | |
4772 | return TRUE; | |
4773 | } | |
4774 | ||
4775 | /* Set the sizes of the dynamic sections. */ | |
4776 | ||
4777 | static bfd_boolean | |
4778 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4779 | struct bfd_link_info *info) | |
4780 | { | |
4781 | struct ppc_elf_link_hash_table *htab; | |
4782 | asection *s; | |
4783 | bfd_boolean relocs; | |
4784 | bfd *ibfd; | |
7fce784e | 4785 | |
252b5132 | 4786 | #ifdef DEBUG |
25dbc73a | 4787 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 4788 | #endif |
252b5132 | 4789 | |
25dbc73a AM |
4790 | htab = ppc_elf_hash_table (info); |
4791 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 4792 | |
25dbc73a AM |
4793 | if (elf_hash_table (info)->dynamic_sections_created) |
4794 | { | |
4795 | /* Set the contents of the .interp section to the interpreter. */ | |
4796 | if (info->executable) | |
4797 | { | |
4798 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); | |
4799 | BFD_ASSERT (s != NULL); | |
4800 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4801 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4802 | } | |
4803 | } | |
252b5132 | 4804 | |
4a3dc543 | 4805 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 4806 | htab->got_header_size = 16; |
4a3dc543 | 4807 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 4808 | htab->got_header_size = 12; |
252b5132 | 4809 | |
25dbc73a AM |
4810 | /* Set up .got offsets for local syms, and space for local dynamic |
4811 | relocs. */ | |
4812 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4813 | { | |
4814 | bfd_signed_vma *local_got; | |
4815 | bfd_signed_vma *end_local_got; | |
4816 | char *lgot_masks; | |
4817 | bfd_size_type locsymcount; | |
4818 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 4819 | |
d2663f46 | 4820 | if (!is_ppc_elf_target (ibfd->xvec)) |
25dbc73a | 4821 | continue; |
7fce784e | 4822 | |
25dbc73a AM |
4823 | for (s = ibfd->sections; s != NULL; s = s->next) |
4824 | { | |
4825 | struct ppc_elf_dyn_relocs *p; | |
252b5132 | 4826 | |
25dbc73a AM |
4827 | for (p = ((struct ppc_elf_dyn_relocs *) |
4828 | elf_section_data (s)->local_dynrel); | |
4829 | p != NULL; | |
4830 | p = p->next) | |
4831 | { | |
4832 | if (!bfd_is_abs_section (p->sec) | |
4833 | && bfd_is_abs_section (p->sec->output_section)) | |
4834 | { | |
4835 | /* Input section has been discarded, either because | |
4836 | it is a copy of a linkonce section or due to | |
4837 | linker script /DISCARD/, so we'll be discarding | |
4838 | the relocs too. */ | |
7fce784e | 4839 | } |
25dbc73a | 4840 | else if (p->count != 0) |
7fce784e | 4841 | { |
25dbc73a AM |
4842 | elf_section_data (p->sec)->sreloc->size |
4843 | += p->count * sizeof (Elf32_External_Rela); | |
4844 | if ((p->sec->output_section->flags | |
4845 | & (SEC_READONLY | SEC_ALLOC)) | |
4846 | == (SEC_READONLY | SEC_ALLOC)) | |
4847 | info->flags |= DF_TEXTREL; | |
7fce784e | 4848 | } |
252b5132 | 4849 | } |
252b5132 | 4850 | } |
252b5132 | 4851 | |
25dbc73a AM |
4852 | local_got = elf_local_got_refcounts (ibfd); |
4853 | if (!local_got) | |
4854 | continue; | |
252b5132 | 4855 | |
25dbc73a AM |
4856 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
4857 | locsymcount = symtab_hdr->sh_info; | |
4858 | end_local_got = local_got + locsymcount; | |
4859 | lgot_masks = (char *) end_local_got; | |
25dbc73a AM |
4860 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
4861 | if (*local_got > 0) | |
4862 | { | |
4863 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
4864 | { | |
4865 | /* If just an LD reloc, we'll just use | |
4866 | htab->tlsld_got.offset. */ | |
3b36f7e6 | 4867 | htab->tlsld_got.refcount += 1; |
25dbc73a AM |
4868 | *local_got = (bfd_vma) -1; |
4869 | } | |
4870 | else | |
4871 | { | |
3b36f7e6 | 4872 | unsigned int need = 0; |
25dbc73a AM |
4873 | if ((*lgot_masks & TLS_TLS) != 0) |
4874 | { | |
4875 | if ((*lgot_masks & TLS_GD) != 0) | |
3b36f7e6 | 4876 | need += 8; |
25dbc73a | 4877 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) |
3b36f7e6 | 4878 | need += 4; |
25dbc73a | 4879 | if ((*lgot_masks & TLS_DTPREL) != 0) |
3b36f7e6 | 4880 | need += 4; |
25dbc73a AM |
4881 | } |
4882 | else | |
3b36f7e6 AM |
4883 | need += 4; |
4884 | *local_got = allocate_got (htab, need); | |
25dbc73a | 4885 | if (info->shared) |
3b36f7e6 AM |
4886 | htab->relgot->size += (need |
4887 | * (sizeof (Elf32_External_Rela) / 4)); | |
25dbc73a AM |
4888 | } |
4889 | } | |
4890 | else | |
4891 | *local_got = (bfd_vma) -1; | |
4892 | } | |
252b5132 | 4893 | |
3b36f7e6 AM |
4894 | if (htab->tlsld_got.refcount > 0) |
4895 | { | |
4896 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
4897 | if (info->shared) | |
4898 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
4899 | } | |
4900 | else | |
4901 | htab->tlsld_got.offset = (bfd_vma) -1; | |
4902 | ||
25dbc73a AM |
4903 | /* Allocate space for global sym dynamic relocs. */ |
4904 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
4905 | ||
4a3dc543 | 4906 | if (htab->got != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
4907 | { |
4908 | unsigned int g_o_t = 32768; | |
4909 | ||
4d962050 AM |
4910 | /* If we haven't allocated the header, do so now. When we get here, |
4911 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
4912 | or 32780 to 65536 (header allocated). For new plt/got, the | |
4913 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
4914 | if (htab->got->size <= 32768) |
4915 | { | |
4916 | g_o_t = htab->got->size; | |
4a3dc543 | 4917 | if (htab->plt_type == PLT_OLD) |
4d962050 | 4918 | g_o_t += 4; |
3b36f7e6 AM |
4919 | htab->got->size += htab->got_header_size; |
4920 | } | |
3b36f7e6 AM |
4921 | |
4922 | htab->elf.hgot->root.u.def.value = g_o_t; | |
4923 | } | |
4924 | ||
d7128ce4 AM |
4925 | if (htab->glink != NULL && htab->glink->size != 0) |
4926 | { | |
4927 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
4928 | /* Space for the branch table. */ |
4929 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
4930 | /* Pad out to align the start of PLTresolve. */ | |
4931 | htab->glink->size += -htab->glink->size & 15; | |
d7128ce4 | 4932 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 AM |
4933 | |
4934 | if (htab->emit_stub_syms) | |
4935 | { | |
4936 | struct elf_link_hash_entry *sh; | |
4937 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
4938 | TRUE, FALSE, FALSE); | |
4939 | if (sh == NULL) | |
4940 | return FALSE; | |
4941 | if (sh->root.type == bfd_link_hash_new) | |
4942 | { | |
4943 | sh->root.type = bfd_link_hash_defined; | |
4944 | sh->root.u.def.section = htab->glink; | |
4945 | sh->root.u.def.value = htab->glink_pltresolve; | |
4946 | sh->ref_regular = 1; | |
4947 | sh->def_regular = 1; | |
4948 | sh->ref_regular_nonweak = 1; | |
4949 | sh->forced_local = 1; | |
4950 | sh->non_elf = 0; | |
4951 | } | |
4952 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
4953 | TRUE, FALSE, FALSE); | |
4954 | if (sh == NULL) | |
4955 | return FALSE; | |
4956 | if (sh->root.type == bfd_link_hash_new) | |
4957 | { | |
4958 | sh->root.type = bfd_link_hash_defined; | |
4959 | sh->root.u.def.section = htab->glink; | |
4960 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
4961 | sh->ref_regular = 1; | |
4962 | sh->def_regular = 1; | |
4963 | sh->ref_regular_nonweak = 1; | |
4964 | sh->forced_local = 1; | |
4965 | sh->non_elf = 0; | |
4966 | } | |
4967 | } | |
d7128ce4 AM |
4968 | } |
4969 | ||
25dbc73a AM |
4970 | /* We've now determined the sizes of the various dynamic sections. |
4971 | Allocate memory for them. */ | |
4972 | relocs = FALSE; | |
4973 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 4974 | { |
9d8504b1 PB |
4975 | bfd_boolean strip_section = TRUE; |
4976 | ||
25dbc73a AM |
4977 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
4978 | continue; | |
252b5132 | 4979 | |
25dbc73a | 4980 | if (s == htab->plt |
d7128ce4 | 4981 | || s == htab->glink |
644285ef | 4982 | || s == htab->got |
9d8504b1 | 4983 | || s == htab->sgotplt |
c456f082 AM |
4984 | || s == htab->sbss |
4985 | || s == htab->dynbss | |
4986 | || s == htab->dynsbss) | |
25dbc73a | 4987 | { |
9d8504b1 PB |
4988 | /* We'd like to strip these sections if they aren't needed, but if |
4989 | we've exported dynamic symbols from them we must leave them. | |
4990 | It's too late to tell BFD to get rid of the symbols. */ | |
7325306f | 4991 | if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL) |
9d8504b1 | 4992 | strip_section = FALSE; |
25dbc73a AM |
4993 | /* Strip this section if we don't need it; see the |
4994 | comment below. */ | |
4995 | } | |
c9a2f333 AM |
4996 | else if (s == htab->sdata[0].section |
4997 | || s == htab->sdata[1].section) | |
25dbc73a | 4998 | { |
c9a2f333 | 4999 | /* Strip these too. */ |
25dbc73a | 5000 | } |
0112cd26 | 5001 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
25dbc73a | 5002 | { |
c456f082 | 5003 | if (s->size != 0) |
25dbc73a AM |
5004 | { |
5005 | /* Remember whether there are any relocation sections. */ | |
5006 | relocs = TRUE; | |
252b5132 | 5007 | |
25dbc73a AM |
5008 | /* We use the reloc_count field as a counter if we need |
5009 | to copy relocs into the output file. */ | |
5010 | s->reloc_count = 0; | |
252b5132 RH |
5011 | } |
5012 | } | |
25dbc73a AM |
5013 | else |
5014 | { | |
5015 | /* It's not one of our sections, so don't allocate space. */ | |
5016 | continue; | |
5017 | } | |
252b5132 | 5018 | |
9d8504b1 | 5019 | if (s->size == 0 && strip_section) |
25dbc73a | 5020 | { |
c456f082 AM |
5021 | /* If we don't need this section, strip it from the |
5022 | output file. This is mostly to handle .rela.bss and | |
5023 | .rela.plt. We must create both sections in | |
5024 | create_dynamic_sections, because they must be created | |
5025 | before the linker maps input sections to output | |
5026 | sections. The linker does that before | |
5027 | adjust_dynamic_symbol is called, and it is that | |
5028 | function which decides whether anything needs to go | |
5029 | into these sections. */ | |
8423293d | 5030 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
5031 | continue; |
5032 | } | |
7fce784e | 5033 | |
d7128ce4 | 5034 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
5035 | continue; |
5036 | ||
25dbc73a AM |
5037 | /* Allocate memory for the section contents. */ |
5038 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
5039 | if (s->contents == NULL) | |
5040 | return FALSE; | |
5041 | } | |
252b5132 | 5042 | |
25dbc73a | 5043 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 5044 | { |
25dbc73a AM |
5045 | /* Add some entries to the .dynamic section. We fill in the |
5046 | values later, in ppc_elf_finish_dynamic_sections, but we | |
5047 | must add the entries now so that we get the correct size for | |
5048 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5049 | dynamic linker and used by the debugger. */ | |
5050 | #define add_dynamic_entry(TAG, VAL) \ | |
5051 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 5052 | |
25dbc73a | 5053 | if (info->executable) |
7619e7c7 | 5054 | { |
25dbc73a AM |
5055 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5056 | return FALSE; | |
7619e7c7 AM |
5057 | } |
5058 | ||
25dbc73a | 5059 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 5060 | { |
25dbc73a AM |
5061 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
5062 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
5063 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5064 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
5065 | return FALSE; | |
5066 | } | |
7619e7c7 | 5067 | |
d7128ce4 AM |
5068 | if (htab->glink != NULL && htab->glink->size != 0) |
5069 | { | |
1fe44d79 | 5070 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 AM |
5071 | return FALSE; |
5072 | } | |
5073 | ||
25dbc73a AM |
5074 | if (relocs) |
5075 | { | |
5076 | if (!add_dynamic_entry (DT_RELA, 0) | |
5077 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5078 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
5079 | return FALSE; | |
5080 | } | |
7619e7c7 | 5081 | |
25dbc73a AM |
5082 | /* If any dynamic relocs apply to a read-only section, then we |
5083 | need a DT_TEXTREL entry. */ | |
5084 | if ((info->flags & DF_TEXTREL) == 0) | |
5085 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
5086 | info); | |
7619e7c7 | 5087 | |
25dbc73a AM |
5088 | if ((info->flags & DF_TEXTREL) != 0) |
5089 | { | |
5090 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5091 | return FALSE; | |
7619e7c7 AM |
5092 | } |
5093 | } | |
25dbc73a AM |
5094 | #undef add_dynamic_entry |
5095 | ||
7619e7c7 AM |
5096 | return TRUE; |
5097 | } | |
25dbc73a AM |
5098 | \f |
5099 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
5100 | ||
5101 | static const int shared_stub_entry[] = | |
5102 | { | |
5103 | 0x7c0802a6, /* mflr 0 */ | |
5104 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
5105 | 0x7d6802a6, /* mflr 11 */ | |
5106 | 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ | |
5107 | 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ | |
5108 | 0x7c0803a6, /* mtlr 0 */ | |
5109 | 0x7d6903a6, /* mtctr 11 */ | |
5110 | 0x4e800420, /* bctr */ | |
5111 | }; | |
5112 | ||
5113 | static const int stub_entry[] = | |
5114 | { | |
5115 | 0x3d600000, /* lis 11,xxx@ha */ | |
5116 | 0x396b0000, /* addi 11,11,xxx@l */ | |
5117 | 0x7d6903a6, /* mtctr 11 */ | |
5118 | 0x4e800420, /* bctr */ | |
5119 | }; | |
5120 | ||
5121 | static bfd_boolean | |
5122 | ppc_elf_relax_section (bfd *abfd, | |
5123 | asection *isec, | |
5124 | struct bfd_link_info *link_info, | |
5125 | bfd_boolean *again) | |
5126 | { | |
5127 | struct one_fixup | |
5128 | { | |
5129 | struct one_fixup *next; | |
5130 | asection *tsec; | |
5131 | bfd_vma toff; | |
5132 | bfd_vma trampoff; | |
5133 | }; | |
7619e7c7 | 5134 | |
25dbc73a AM |
5135 | Elf_Internal_Shdr *symtab_hdr; |
5136 | bfd_byte *contents = NULL; | |
5137 | Elf_Internal_Sym *isymbuf = NULL; | |
5138 | Elf_Internal_Rela *internal_relocs = NULL; | |
5139 | Elf_Internal_Rela *irel, *irelend; | |
5140 | struct one_fixup *fixups = NULL; | |
5141 | bfd_boolean changed; | |
d7128ce4 | 5142 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 5143 | bfd_size_type trampoff; |
a6aa5195 | 5144 | asection *got2; |
7619e7c7 | 5145 | |
25dbc73a | 5146 | *again = FALSE; |
7619e7c7 | 5147 | |
c87b5a93 AM |
5148 | /* Nothing to do if there are no relocations, and no need to do |
5149 | anything with non-alloc sections. */ | |
5150 | if ((isec->flags & SEC_ALLOC) == 0 | |
5151 | || (isec->flags & SEC_RELOC) == 0 | |
5152 | || isec->reloc_count == 0) | |
25dbc73a | 5153 | return TRUE; |
7619e7c7 | 5154 | |
25dbc73a AM |
5155 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
5156 | /* Space for a branch around any trampolines. */ | |
5157 | trampoff += 4; | |
7619e7c7 | 5158 | |
25dbc73a | 5159 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
7619e7c7 | 5160 | |
25dbc73a AM |
5161 | /* Get a copy of the native relocations. */ |
5162 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, | |
5163 | link_info->keep_memory); | |
5164 | if (internal_relocs == NULL) | |
5165 | goto error_return; | |
7619e7c7 | 5166 | |
d7128ce4 | 5167 | htab = ppc_elf_hash_table (link_info); |
a6aa5195 | 5168 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
7619e7c7 | 5169 | |
a6aa5195 | 5170 | irelend = internal_relocs + isec->reloc_count; |
25dbc73a | 5171 | for (irel = internal_relocs; irel < irelend; irel++) |
7619e7c7 | 5172 | { |
25dbc73a AM |
5173 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
5174 | bfd_vma symaddr, reladdr, toff, roff; | |
5175 | asection *tsec; | |
5176 | struct one_fixup *f; | |
5177 | size_t insn_offset = 0; | |
5178 | bfd_vma max_branch_offset, val; | |
5179 | bfd_byte *hit_addr; | |
5180 | unsigned long t0; | |
5181 | unsigned char sym_type; | |
7619e7c7 | 5182 | |
25dbc73a AM |
5183 | switch (r_type) |
5184 | { | |
5185 | case R_PPC_REL24: | |
5186 | case R_PPC_LOCAL24PC: | |
5187 | case R_PPC_PLTREL24: | |
5188 | max_branch_offset = 1 << 25; | |
5189 | break; | |
7619e7c7 | 5190 | |
25dbc73a AM |
5191 | case R_PPC_REL14: |
5192 | case R_PPC_REL14_BRTAKEN: | |
5193 | case R_PPC_REL14_BRNTAKEN: | |
5194 | max_branch_offset = 1 << 15; | |
5195 | break; | |
7619e7c7 | 5196 | |
25dbc73a AM |
5197 | default: |
5198 | continue; | |
5199 | } | |
7619e7c7 | 5200 | |
25dbc73a AM |
5201 | /* Get the value of the symbol referred to by the reloc. */ |
5202 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5203 | { | |
5204 | /* A local symbol. */ | |
5205 | Elf_Internal_Sym *isym; | |
7fce784e | 5206 | |
25dbc73a AM |
5207 | /* Read this BFD's local symbols. */ |
5208 | if (isymbuf == NULL) | |
5209 | { | |
5210 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5211 | if (isymbuf == NULL) | |
5212 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5213 | symtab_hdr->sh_info, 0, | |
5214 | NULL, NULL, NULL); | |
5215 | if (isymbuf == 0) | |
5216 | goto error_return; | |
5217 | } | |
5218 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5219 | if (isym->st_shndx == SHN_UNDEF) | |
5220 | continue; /* We can't do anything with undefined symbols. */ | |
5221 | else if (isym->st_shndx == SHN_ABS) | |
5222 | tsec = bfd_abs_section_ptr; | |
5223 | else if (isym->st_shndx == SHN_COMMON) | |
5224 | tsec = bfd_com_section_ptr; | |
5225 | else | |
5226 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7fce784e | 5227 | |
25dbc73a AM |
5228 | toff = isym->st_value; |
5229 | sym_type = ELF_ST_TYPE (isym->st_info); | |
5230 | } | |
5231 | else | |
5232 | { | |
5233 | /* Global symbol handling. */ | |
5234 | unsigned long indx; | |
5235 | struct elf_link_hash_entry *h; | |
7619e7c7 | 5236 | |
25dbc73a AM |
5237 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
5238 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 5239 | |
25dbc73a AM |
5240 | while (h->root.type == bfd_link_hash_indirect |
5241 | || h->root.type == bfd_link_hash_warning) | |
5242 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 5243 | |
a6aa5195 AM |
5244 | tsec = NULL; |
5245 | toff = 0; | |
25dbc73a | 5246 | if (r_type == R_PPC_PLTREL24 |
a6aa5195 | 5247 | && htab->plt != NULL) |
25dbc73a | 5248 | { |
a6aa5195 AM |
5249 | struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend); |
5250 | ||
5251 | if (ent != NULL) | |
d7128ce4 | 5252 | { |
4a3dc543 | 5253 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
5254 | { |
5255 | tsec = htab->glink; | |
5256 | toff = ent->glink_offset; | |
5257 | } | |
5258 | else | |
5259 | { | |
5260 | tsec = htab->plt; | |
5261 | toff = ent->plt.offset; | |
5262 | } | |
d7128ce4 | 5263 | } |
25dbc73a | 5264 | } |
a6aa5195 AM |
5265 | if (tsec != NULL) |
5266 | ; | |
25dbc73a AM |
5267 | else if (h->root.type == bfd_link_hash_defined |
5268 | || h->root.type == bfd_link_hash_defweak) | |
5269 | { | |
5270 | tsec = h->root.u.def.section; | |
5271 | toff = h->root.u.def.value; | |
5272 | } | |
5273 | else | |
5274 | continue; | |
7619e7c7 | 5275 | |
25dbc73a AM |
5276 | sym_type = h->type; |
5277 | } | |
7619e7c7 | 5278 | |
25dbc73a AM |
5279 | /* If the branch and target are in the same section, you have |
5280 | no hope of adding stubs. We'll error out later should the | |
5281 | branch overflow. */ | |
5282 | if (tsec == isec) | |
5283 | continue; | |
5284 | ||
5285 | /* There probably isn't any reason to handle symbols in | |
5286 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
5287 | attribute for a code section, and we are only looking at | |
5288 | branches. However, implement it correctly here as a | |
5289 | reference for other target relax_section functions. */ | |
5290 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
5291 | { | |
5292 | /* At this stage in linking, no SEC_MERGE symbol has been | |
5293 | adjusted, so all references to such symbols need to be | |
5294 | passed through _bfd_merged_section_offset. (Later, in | |
5295 | relocate_section, all SEC_MERGE symbols *except* for | |
5296 | section symbols have been adjusted.) | |
5297 | ||
5298 | gas may reduce relocations against symbols in SEC_MERGE | |
5299 | sections to a relocation against the section symbol when | |
5300 | the original addend was zero. When the reloc is against | |
5301 | a section symbol we should include the addend in the | |
5302 | offset passed to _bfd_merged_section_offset, since the | |
5303 | location of interest is the original symbol. On the | |
5304 | other hand, an access to "sym+addend" where "sym" is not | |
5305 | a section symbol should not include the addend; Such an | |
5306 | access is presumed to be an offset from "sym"; The | |
5307 | location of interest is just "sym". */ | |
5308 | if (sym_type == STT_SECTION) | |
5309 | toff += irel->r_addend; | |
7619e7c7 | 5310 | |
25dbc73a AM |
5311 | toff = _bfd_merged_section_offset (abfd, &tsec, |
5312 | elf_section_data (tsec)->sec_info, | |
5313 | toff); | |
7619e7c7 | 5314 | |
25dbc73a AM |
5315 | if (sym_type != STT_SECTION) |
5316 | toff += irel->r_addend; | |
5317 | } | |
a6aa5195 AM |
5318 | /* PLTREL24 addends are special. */ |
5319 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 5320 | toff += irel->r_addend; |
7619e7c7 | 5321 | |
7de713b9 AM |
5322 | /* Attempted -shared link of non-pic code loses. */ |
5323 | if (tsec->output_section == NULL) | |
5324 | continue; | |
5325 | ||
25dbc73a | 5326 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7619e7c7 | 5327 | |
25dbc73a AM |
5328 | roff = irel->r_offset; |
5329 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7619e7c7 | 5330 | |
25dbc73a AM |
5331 | /* If the branch is in range, no need to do anything. */ |
5332 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) | |
5333 | continue; | |
252b5132 | 5334 | |
25dbc73a AM |
5335 | /* Look for an existing fixup to this address. */ |
5336 | for (f = fixups; f ; f = f->next) | |
5337 | if (f->tsec == tsec && f->toff == toff) | |
5338 | break; | |
5339 | ||
5340 | if (f == NULL) | |
7619e7c7 | 5341 | { |
25dbc73a AM |
5342 | size_t size; |
5343 | unsigned long stub_rtype; | |
252b5132 | 5344 | |
25dbc73a AM |
5345 | val = trampoff - roff; |
5346 | if (val >= max_branch_offset) | |
5347 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
5348 | one. We'll report an error later. */ | |
5349 | continue; | |
252b5132 | 5350 | |
25dbc73a AM |
5351 | if (link_info->shared) |
5352 | { | |
5353 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
5354 | insn_offset = 12; | |
5355 | stub_rtype = R_PPC_RELAX32PC; | |
5356 | } | |
5357 | else | |
5358 | { | |
5359 | size = 4 * ARRAY_SIZE (stub_entry); | |
5360 | insn_offset = 0; | |
5361 | stub_rtype = R_PPC_RELAX32; | |
5362 | } | |
dc810e39 | 5363 | |
25dbc73a AM |
5364 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
5365 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
5366 | abort (); | |
d7128ce4 AM |
5367 | if (tsec == htab->plt |
5368 | || tsec == htab->glink) | |
25dbc73a | 5369 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; |
252b5132 | 5370 | |
25dbc73a AM |
5371 | /* Hijack the old relocation. Since we need two |
5372 | relocations for this use a "composite" reloc. */ | |
5373 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
5374 | stub_rtype); | |
5375 | irel->r_offset = trampoff + insn_offset; | |
252b5132 | 5376 | |
25dbc73a AM |
5377 | /* Record the fixup so we don't do it again this section. */ |
5378 | f = bfd_malloc (sizeof (*f)); | |
5379 | f->next = fixups; | |
5380 | f->tsec = tsec; | |
5381 | f->toff = toff; | |
5382 | f->trampoff = trampoff; | |
5383 | fixups = f; | |
252b5132 | 5384 | |
25dbc73a AM |
5385 | trampoff += size; |
5386 | } | |
5387 | else | |
5388 | { | |
5389 | val = f->trampoff - roff; | |
5390 | if (val >= max_branch_offset) | |
5391 | continue; | |
252b5132 | 5392 | |
25dbc73a AM |
5393 | /* Nop out the reloc, since we're finalizing things here. */ |
5394 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
5395 | } | |
252b5132 | 5396 | |
25dbc73a AM |
5397 | /* Get the section contents. */ |
5398 | if (contents == NULL) | |
5399 | { | |
5400 | /* Get cached copy if it exists. */ | |
5401 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
5402 | contents = elf_section_data (isec)->this_hdr.contents; | |
5403 | else | |
5404 | { | |
5405 | /* Go get them off disk. */ | |
5406 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
5407 | goto error_return; | |
5408 | } | |
5409 | } | |
252b5132 | 5410 | |
25dbc73a AM |
5411 | /* Fix up the existing branch to hit the trampoline. */ |
5412 | hit_addr = contents + roff; | |
5413 | switch (r_type) | |
5414 | { | |
5415 | case R_PPC_REL24: | |
5416 | case R_PPC_LOCAL24PC: | |
5417 | case R_PPC_PLTREL24: | |
5418 | t0 = bfd_get_32 (abfd, hit_addr); | |
5419 | t0 &= ~0x3fffffc; | |
5420 | t0 |= val & 0x3fffffc; | |
5421 | bfd_put_32 (abfd, t0, hit_addr); | |
5422 | break; | |
252b5132 | 5423 | |
25dbc73a AM |
5424 | case R_PPC_REL14: |
5425 | case R_PPC_REL14_BRTAKEN: | |
5426 | case R_PPC_REL14_BRNTAKEN: | |
5427 | t0 = bfd_get_32 (abfd, hit_addr); | |
5428 | t0 &= ~0xfffc; | |
5429 | t0 |= val & 0xfffc; | |
5430 | bfd_put_32 (abfd, t0, hit_addr); | |
5431 | break; | |
5432 | } | |
5433 | } | |
252b5132 | 5434 | |
25dbc73a AM |
5435 | /* Write out the trampolines. */ |
5436 | changed = fixups != NULL; | |
5437 | if (fixups != NULL) | |
5438 | { | |
5439 | const int *stub; | |
5440 | bfd_byte *dest; | |
5441 | bfd_vma val; | |
5442 | int i, size; | |
252b5132 | 5443 | |
25dbc73a AM |
5444 | do |
5445 | { | |
5446 | struct one_fixup *f = fixups; | |
5447 | fixups = fixups->next; | |
5448 | free (f); | |
5449 | } | |
5450 | while (fixups); | |
252b5132 | 5451 | |
25dbc73a AM |
5452 | contents = bfd_realloc (contents, trampoff); |
5453 | if (contents == NULL) | |
5454 | goto error_return; | |
252b5132 | 5455 | |
25dbc73a AM |
5456 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
5457 | /* Branch around the trampolines. */ | |
5458 | val = trampoff - isec->size + 0x48000000; | |
5459 | dest = contents + isec->size; | |
5460 | isec->size = trampoff; | |
5461 | bfd_put_32 (abfd, val, dest); | |
5462 | dest += 4; | |
252b5132 | 5463 | |
25dbc73a AM |
5464 | if (link_info->shared) |
5465 | { | |
5466 | stub = shared_stub_entry; | |
5467 | size = ARRAY_SIZE (shared_stub_entry); | |
5468 | } | |
5469 | else | |
5470 | { | |
5471 | stub = stub_entry; | |
5472 | size = ARRAY_SIZE (stub_entry); | |
5473 | } | |
252b5132 | 5474 | |
25dbc73a AM |
5475 | i = 0; |
5476 | while (dest < contents + trampoff) | |
252b5132 | 5477 | { |
25dbc73a AM |
5478 | bfd_put_32 (abfd, stub[i], dest); |
5479 | i++; | |
5480 | if (i == size) | |
5481 | i = 0; | |
5482 | dest += 4; | |
252b5132 | 5483 | } |
25dbc73a | 5484 | BFD_ASSERT (i == 0); |
252b5132 RH |
5485 | } |
5486 | ||
25dbc73a AM |
5487 | if (isymbuf != NULL |
5488 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 5489 | { |
25dbc73a AM |
5490 | if (! link_info->keep_memory) |
5491 | free (isymbuf); | |
252b5132 | 5492 | else |
25dbc73a AM |
5493 | { |
5494 | /* Cache the symbols for elf_link_input_bfd. */ | |
5495 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
5496 | } | |
252b5132 RH |
5497 | } |
5498 | ||
25dbc73a AM |
5499 | if (contents != NULL |
5500 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5501 | { | |
5502 | if (!changed && !link_info->keep_memory) | |
5503 | free (contents); | |
5504 | else | |
5505 | { | |
5506 | /* Cache the section contents for elf_link_input_bfd. */ | |
5507 | elf_section_data (isec)->this_hdr.contents = contents; | |
5508 | } | |
5509 | } | |
252b5132 | 5510 | |
25dbc73a AM |
5511 | if (elf_section_data (isec)->relocs != internal_relocs) |
5512 | { | |
5513 | if (!changed) | |
5514 | free (internal_relocs); | |
5515 | else | |
5516 | elf_section_data (isec)->relocs = internal_relocs; | |
5517 | } | |
252b5132 | 5518 | |
25dbc73a | 5519 | *again = changed; |
b34976b6 | 5520 | return TRUE; |
25dbc73a AM |
5521 | |
5522 | error_return: | |
5523 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
5524 | free (isymbuf); | |
5525 | if (contents != NULL | |
5526 | && elf_section_data (isec)->this_hdr.contents != contents) | |
5527 | free (contents); | |
5528 | if (internal_relocs != NULL | |
5529 | && elf_section_data (isec)->relocs != internal_relocs) | |
5530 | free (internal_relocs); | |
5531 | return FALSE; | |
252b5132 | 5532 | } |
252b5132 | 5533 | \f |
8a696751 AM |
5534 | /* What to do when ld finds relocations against symbols defined in |
5535 | discarded sections. */ | |
5536 | ||
5537 | static unsigned int | |
5538 | ppc_elf_action_discarded (asection *sec) | |
5539 | { | |
5540 | if (strcmp (".fixup", sec->name) == 0) | |
5541 | return 0; | |
5542 | ||
5543 | if (strcmp (".got2", sec->name) == 0) | |
5544 | return 0; | |
5545 | ||
5546 | return _bfd_elf_default_action_discarded (sec); | |
5547 | } | |
c9a2f333 | 5548 | \f |
25dbc73a | 5549 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 5550 | |
25dbc73a | 5551 | static bfd_vma |
76750a2f | 5552 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
5553 | elf_linker_section_t *lsect, |
5554 | struct elf_link_hash_entry *h, | |
5555 | bfd_vma relocation, | |
2bb04cf2 | 5556 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
5557 | { |
5558 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 5559 | |
25dbc73a | 5560 | BFD_ASSERT (lsect != NULL); |
252b5132 | 5561 | |
25dbc73a | 5562 | if (h != NULL) |
252b5132 | 5563 | { |
25dbc73a AM |
5564 | /* Handle global symbol. */ |
5565 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 5566 | |
25dbc73a | 5567 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
5568 | BFD_ASSERT (eh->elf.def_regular); |
5569 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
5570 | } |
5571 | else | |
5572 | { | |
5573 | /* Handle local symbol. */ | |
5574 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 5575 | |
25dbc73a | 5576 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
5577 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
5578 | } | |
252b5132 | 5579 | |
76750a2f AM |
5580 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
5581 | rel->r_addend, | |
5582 | lsect); | |
5583 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 5584 | |
76750a2f AM |
5585 | /* Offset will always be a multiple of four, so use the bottom bit |
5586 | as a "written" flag. */ | |
5587 | if ((linker_section_ptr->offset & 1) == 0) | |
5588 | { | |
5589 | bfd_put_32 (lsect->section->owner, | |
5590 | relocation + linker_section_ptr->addend, | |
5591 | lsect->section->contents + linker_section_ptr->offset); | |
5592 | linker_section_ptr->offset += 1; | |
252b5132 RH |
5593 | } |
5594 | ||
25dbc73a | 5595 | relocation = (lsect->section->output_offset |
76750a2f | 5596 | + linker_section_ptr->offset - 1 |
c9a2f333 | 5597 | - 0x8000); |
252b5132 | 5598 | |
25dbc73a AM |
5599 | #ifdef DEBUG |
5600 | fprintf (stderr, | |
5601 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
5602 | lsect->name, (long) relocation, (long) relocation); | |
5603 | #endif | |
252b5132 | 5604 | |
25dbc73a AM |
5605 | /* Subtract out the addend, because it will get added back in by the normal |
5606 | processing. */ | |
5607 | return relocation - linker_section_ptr->addend; | |
252b5132 | 5608 | } |
25dbc73a | 5609 | |
252b5132 RH |
5610 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
5611 | to handle the relocations for a section. | |
5612 | ||
5613 | The relocs are always passed as Rela structures; if the section | |
5614 | actually uses Rel structures, the r_addend field will always be | |
5615 | zero. | |
5616 | ||
5617 | This function is responsible for adjust the section contents as | |
5618 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 5619 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
5620 | necessary. |
5621 | ||
5622 | This function does not have to worry about setting the reloc | |
5623 | address or the reloc symbol index. | |
5624 | ||
5625 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
5626 | ||
5627 | LOCAL_SECTIONS is an array giving the section in the input file | |
5628 | corresponding to the st_shndx field of each local symbol. | |
5629 | ||
5630 | The global hash table entry for the global symbols can be found | |
5631 | via elf_sym_hashes (input_bfd). | |
5632 | ||
1049f94e | 5633 | When generating relocatable output, this function must handle |
252b5132 RH |
5634 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
5635 | going to be the section symbol corresponding to the output | |
5636 | section, which means that the addend must be adjusted | |
5637 | accordingly. */ | |
5638 | ||
b34976b6 | 5639 | static bfd_boolean |
55fd94b0 AM |
5640 | ppc_elf_relocate_section (bfd *output_bfd, |
5641 | struct bfd_link_info *info, | |
5642 | bfd *input_bfd, | |
5643 | asection *input_section, | |
5644 | bfd_byte *contents, | |
5645 | Elf_Internal_Rela *relocs, | |
5646 | Elf_Internal_Sym *local_syms, | |
5647 | asection **local_sections) | |
252b5132 | 5648 | { |
7619e7c7 AM |
5649 | Elf_Internal_Shdr *symtab_hdr; |
5650 | struct elf_link_hash_entry **sym_hashes; | |
5651 | struct ppc_elf_link_hash_table *htab; | |
5652 | Elf_Internal_Rela *rel; | |
5653 | Elf_Internal_Rela *relend; | |
5654 | Elf_Internal_Rela outrel; | |
5655 | bfd_byte *loc; | |
a6aa5195 | 5656 | asection *got2, *sreloc = NULL; |
252b5132 | 5657 | bfd_vma *local_got_offsets; |
b34976b6 | 5658 | bfd_boolean ret = TRUE; |
4fe5ca5b | 5659 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
b34976b6 | 5660 | |
252b5132 | 5661 | #ifdef DEBUG |
d003868e AM |
5662 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
5663 | "%ld relocations%s", | |
5664 | input_bfd, input_section, | |
5665 | (long) input_section->reloc_count, | |
5666 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
5667 | #endif |
5668 | ||
a6aa5195 AM |
5669 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
5670 | ||
e47cd125 | 5671 | /* Initialize howto table if not already done. */ |
8da6118f | 5672 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
5673 | ppc_elf_howto_init (); |
5674 | ||
7619e7c7 | 5675 | htab = ppc_elf_hash_table (info); |
252b5132 | 5676 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
5677 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5678 | sym_hashes = elf_sym_hashes (input_bfd); | |
5679 | rel = relocs; | |
5680 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
5681 | for (; rel < relend; rel++) |
5682 | { | |
7619e7c7 AM |
5683 | enum elf_ppc_reloc_type r_type; |
5684 | bfd_vma addend; | |
5685 | bfd_reloc_status_type r; | |
5686 | Elf_Internal_Sym *sym; | |
5687 | asection *sec; | |
5688 | struct elf_link_hash_entry *h; | |
5689 | const char *sym_name; | |
252b5132 RH |
5690 | reloc_howto_type *howto; |
5691 | unsigned long r_symndx; | |
5692 | bfd_vma relocation; | |
7619e7c7 | 5693 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
5694 | bfd_boolean unresolved_reloc; |
5695 | bfd_boolean warned; | |
5696 | unsigned int tls_type, tls_mask, tls_gd; | |
5697 | ||
55fd94b0 AM |
5698 | r_type = ELF32_R_TYPE (rel->r_info); |
5699 | sym = NULL; | |
5700 | sec = NULL; | |
5701 | h = NULL; | |
7619e7c7 AM |
5702 | unresolved_reloc = FALSE; |
5703 | warned = FALSE; | |
252b5132 | 5704 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 5705 | |
252b5132 RH |
5706 | if (r_symndx < symtab_hdr->sh_info) |
5707 | { | |
5708 | sym = local_syms + r_symndx; | |
5709 | sec = local_sections[r_symndx]; | |
26c61ae5 | 5710 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 5711 | |
8517fae7 | 5712 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
5713 | } |
5714 | else | |
5715 | { | |
b2a8e766 AM |
5716 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
5717 | r_symndx, symtab_hdr, sym_hashes, | |
5718 | h, sec, relocation, | |
5719 | unresolved_reloc, warned); | |
9abc968f | 5720 | |
252b5132 | 5721 | sym_name = h->root.root.string; |
7619e7c7 AM |
5722 | } |
5723 | ||
ab96bf03 AM |
5724 | if (sec != NULL && elf_discarded_section (sec)) |
5725 | { | |
5726 | /* For relocs against symbols from removed linkonce sections, | |
5727 | or sections discarded by a linker script, we just want the | |
5728 | section contents zeroed. Avoid any special processing. */ | |
5729 | howto = NULL; | |
5730 | if (r_type < R_PPC_max) | |
5731 | howto = ppc_elf_howto_table[r_type]; | |
5732 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
5733 | rel->r_info = 0; | |
5734 | rel->r_addend = 0; | |
5735 | continue; | |
5736 | } | |
5737 | ||
5738 | if (info->relocatable) | |
5739 | { | |
5740 | if (got2 != NULL | |
5741 | && r_type == R_PPC_PLTREL24 | |
5742 | && rel->r_addend >= 32768) | |
5743 | { | |
5744 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
5745 | addend specifies the GOT pointer offset within .got2. */ | |
5746 | rel->r_addend += got2->output_offset; | |
5747 | } | |
5748 | continue; | |
5749 | } | |
5750 | ||
7619e7c7 AM |
5751 | /* TLS optimizations. Replace instruction sequences and relocs |
5752 | based on information we collected in tls_optimize. We edit | |
5753 | RELOCS so that --emit-relocs will output something sensible | |
5754 | for the final instruction stream. */ | |
5755 | tls_mask = 0; | |
5756 | tls_gd = 0; | |
5757 | if (IS_PPC_TLS_RELOC (r_type)) | |
5758 | { | |
5759 | if (h != NULL) | |
5760 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
5761 | else if (local_got_offsets != NULL) | |
5762 | { | |
5763 | char *lgot_masks; | |
5764 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
5765 | tls_mask = lgot_masks[r_symndx]; | |
5766 | } | |
5767 | } | |
5768 | ||
5769 | /* Ensure reloc mapping code below stays sane. */ | |
5770 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
5771 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
5772 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
5773 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
5774 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
5775 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
5776 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
5777 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
5778 | abort (); | |
5779 | switch (r_type) | |
5780 | { | |
5781 | default: | |
5782 | break; | |
5783 | ||
5784 | case R_PPC_GOT_TPREL16: | |
5785 | case R_PPC_GOT_TPREL16_LO: | |
5786 | if (tls_mask != 0 | |
5787 | && (tls_mask & TLS_TPREL) == 0) | |
5788 | { | |
5789 | bfd_vma insn; | |
4fe5ca5b | 5790 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5791 | insn &= 31 << 21; |
5792 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4fe5ca5b | 5793 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5794 | r_type = R_PPC_TPREL16_HA; |
5795 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5796 | } | |
5797 | break; | |
5798 | ||
5799 | case R_PPC_TLS: | |
5800 | if (tls_mask != 0 | |
5801 | && (tls_mask & TLS_TPREL) == 0) | |
5802 | { | |
5803 | bfd_vma insn, rtra; | |
5804 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5805 | if ((insn & ((31 << 26) | (31 << 11))) | |
5806 | == ((31 << 26) | (2 << 11))) | |
5807 | rtra = insn & ((1 << 26) - (1 << 16)); | |
5808 | else if ((insn & ((31 << 26) | (31 << 16))) | |
5809 | == ((31 << 26) | (2 << 16))) | |
5810 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
5811 | else | |
5812 | abort (); | |
5813 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
5814 | /* add -> addi. */ | |
5815 | insn = 14 << 26; | |
5816 | else if ((insn & (31 << 1)) == 23 << 1 | |
5817 | && ((insn & (31 << 6)) < 14 << 6 | |
5818 | || ((insn & (31 << 6)) >= 16 << 6 | |
5819 | && (insn & (31 << 6)) < 24 << 6))) | |
5820 | /* load and store indexed -> dform. */ | |
5821 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
5822 | else if ((insn & (31 << 1)) == 21 << 1 | |
5823 | && (insn & (0x1a << 6)) == 0) | |
5824 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
5825 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
5826 | | ((insn >> 6) & 1)); | |
5827 | else if ((insn & (31 << 1)) == 21 << 1 | |
5828 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
5829 | /* lwax -> lwa. */ | |
5830 | insn = (58 << 26) | 2; | |
5831 | else | |
5832 | abort (); | |
5833 | insn |= rtra; | |
5834 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5835 | r_type = R_PPC_TPREL16_LO; | |
5836 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 5837 | |
7619e7c7 | 5838 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
5839 | PPC_TPREL16_LO which is at low-order half-word. */ |
5840 | rel->r_offset += d_offset; | |
7619e7c7 AM |
5841 | } |
5842 | break; | |
5843 | ||
5844 | case R_PPC_GOT_TLSGD16_HI: | |
5845 | case R_PPC_GOT_TLSGD16_HA: | |
5846 | tls_gd = TLS_TPRELGD; | |
5847 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5848 | goto tls_gdld_hi; | |
5849 | break; | |
5850 | ||
5851 | case R_PPC_GOT_TLSLD16_HI: | |
5852 | case R_PPC_GOT_TLSLD16_HA: | |
5853 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5854 | { | |
5855 | tls_gdld_hi: | |
5856 | if ((tls_mask & tls_gd) != 0) | |
5857 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
5858 | + R_PPC_GOT_TPREL16); | |
5859 | else | |
5860 | { | |
5861 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4fe5ca5b | 5862 | rel->r_offset -= d_offset; |
7619e7c7 AM |
5863 | r_type = R_PPC_NONE; |
5864 | } | |
5865 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5866 | } | |
5867 | break; | |
5868 | ||
5869 | case R_PPC_GOT_TLSGD16: | |
5870 | case R_PPC_GOT_TLSGD16_LO: | |
5871 | tls_gd = TLS_TPRELGD; | |
5872 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
5873 | goto tls_get_addr_check; | |
5874 | break; | |
5875 | ||
5876 | case R_PPC_GOT_TLSLD16: | |
5877 | case R_PPC_GOT_TLSLD16_LO: | |
5878 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
5879 | { | |
5880 | tls_get_addr_check: | |
5881 | if (rel + 1 < relend) | |
5882 | { | |
5883 | enum elf_ppc_reloc_type r_type2; | |
5884 | unsigned long r_symndx2; | |
5885 | struct elf_link_hash_entry *h2; | |
87d243f1 | 5886 | bfd_vma insn1, insn2; |
7619e7c7 AM |
5887 | bfd_vma offset; |
5888 | ||
5889 | /* The next instruction should be a call to | |
5890 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 5891 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
5892 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
5893 | if (r_symndx2 < symtab_hdr->sh_info | |
5894 | || (r_type2 != R_PPC_REL14 | |
5895 | && r_type2 != R_PPC_REL14_BRTAKEN | |
5896 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
5897 | && r_type2 != R_PPC_REL24 | |
5898 | && r_type2 != R_PPC_PLTREL24)) | |
5899 | break; | |
5900 | ||
5901 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
5902 | while (h2->root.type == bfd_link_hash_indirect | |
5903 | || h2->root.type == bfd_link_hash_warning) | |
5904 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
5905 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
5906 | break; | |
5907 | ||
5908 | /* OK, it checks out. Replace the call. */ | |
5909 | offset = rel[1].r_offset; | |
5910 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 5911 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
5912 | if ((tls_mask & tls_gd) != 0) |
5913 | { | |
5914 | /* IE */ | |
5915 | insn1 &= (1 << 26) - 1; | |
5916 | insn1 |= 32 << 26; /* lwz */ | |
5917 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
5918 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
e1710606 | 5919 | rel[1].r_addend = 0; |
7619e7c7 AM |
5920 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
5921 | + R_PPC_GOT_TPREL16); | |
5922 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5923 | } | |
5924 | else | |
5925 | { | |
5926 | /* LE */ | |
5927 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
5928 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
5929 | if (tls_gd == 0) | |
5930 | { | |
5931 | /* Was an LD reloc. */ | |
5932 | r_symndx = 0; | |
e1918d23 | 5933 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5934 | } |
5935 | r_type = R_PPC_TPREL16_HA; | |
5936 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
5937 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
5938 | R_PPC_TPREL16_LO); | |
4fe5ca5b | 5939 | rel[1].r_offset += d_offset; |
e1710606 | 5940 | rel[1].r_addend = rel->r_addend; |
7619e7c7 | 5941 | } |
4fe5ca5b | 5942 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
7619e7c7 | 5943 | bfd_put_32 (output_bfd, insn2, contents + offset); |
7619e7c7 AM |
5944 | if (tls_gd == 0) |
5945 | { | |
5946 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 5947 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
5948 | rel--; |
5949 | continue; | |
5950 | } | |
5951 | } | |
252b5132 | 5952 | } |
7619e7c7 AM |
5953 | break; |
5954 | } | |
5955 | ||
5956 | /* Handle other relocations that tweak non-addend part of insn. */ | |
5957 | branch_bit = 0; | |
5958 | switch (r_type) | |
5959 | { | |
5960 | default: | |
5961 | break; | |
5962 | ||
5963 | /* Branch taken prediction relocations. */ | |
5964 | case R_PPC_ADDR14_BRTAKEN: | |
5965 | case R_PPC_REL14_BRTAKEN: | |
5966 | branch_bit = BRANCH_PREDICT_BIT; | |
5967 | /* Fall thru */ | |
5968 | ||
4cc11e76 | 5969 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
5970 | case R_PPC_ADDR14_BRNTAKEN: |
5971 | case R_PPC_REL14_BRNTAKEN: | |
5972 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5973 | insn &= ~BRANCH_PREDICT_BIT; | |
5974 | insn |= branch_bit; | |
5975 | ||
5976 | from = (rel->r_offset | |
5977 | + input_section->output_offset | |
5978 | + input_section->output_section->vma); | |
5979 | ||
5980 | /* Invert 'y' bit if not the default. */ | |
5981 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
5982 | insn ^= BRANCH_PREDICT_BIT; | |
5983 | ||
5984 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5985 | break; | |
252b5132 RH |
5986 | } |
5987 | ||
7619e7c7 AM |
5988 | addend = rel->r_addend; |
5989 | tls_type = 0; | |
5990 | howto = NULL; | |
55fd94b0 AM |
5991 | if (r_type < R_PPC_max) |
5992 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 5993 | switch (r_type) |
252b5132 RH |
5994 | { |
5995 | default: | |
7619e7c7 | 5996 | (*_bfd_error_handler) |
d003868e AM |
5997 | (_("%B: unknown relocation type %d for symbol %s"), |
5998 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
5999 | |
6000 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6001 | ret = FALSE; |
252b5132 RH |
6002 | continue; |
6003 | ||
7619e7c7 AM |
6004 | case R_PPC_NONE: |
6005 | case R_PPC_TLS: | |
6006 | case R_PPC_EMB_MRKREF: | |
6007 | case R_PPC_GNU_VTINHERIT: | |
6008 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
6009 | continue; |
6010 | ||
7619e7c7 AM |
6011 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
6012 | address in the GOT as relocation value instead of the | |
6013 | symbol's value itself. Also, create a GOT entry for the | |
6014 | symbol and put the symbol value there. */ | |
6015 | case R_PPC_GOT_TLSGD16: | |
6016 | case R_PPC_GOT_TLSGD16_LO: | |
6017 | case R_PPC_GOT_TLSGD16_HI: | |
6018 | case R_PPC_GOT_TLSGD16_HA: | |
6019 | tls_type = TLS_TLS | TLS_GD; | |
6020 | goto dogot; | |
6021 | ||
6022 | case R_PPC_GOT_TLSLD16: | |
6023 | case R_PPC_GOT_TLSLD16_LO: | |
6024 | case R_PPC_GOT_TLSLD16_HI: | |
6025 | case R_PPC_GOT_TLSLD16_HA: | |
6026 | tls_type = TLS_TLS | TLS_LD; | |
6027 | goto dogot; | |
6028 | ||
6029 | case R_PPC_GOT_TPREL16: | |
6030 | case R_PPC_GOT_TPREL16_LO: | |
6031 | case R_PPC_GOT_TPREL16_HI: | |
6032 | case R_PPC_GOT_TPREL16_HA: | |
6033 | tls_type = TLS_TLS | TLS_TPREL; | |
6034 | goto dogot; | |
6035 | ||
6036 | case R_PPC_GOT_DTPREL16: | |
6037 | case R_PPC_GOT_DTPREL16_LO: | |
6038 | case R_PPC_GOT_DTPREL16_HI: | |
6039 | case R_PPC_GOT_DTPREL16_HA: | |
6040 | tls_type = TLS_TLS | TLS_DTPREL; | |
6041 | goto dogot; | |
6042 | ||
6043 | case R_PPC_GOT16: | |
6044 | case R_PPC_GOT16_LO: | |
6045 | case R_PPC_GOT16_HI: | |
6046 | case R_PPC_GOT16_HA: | |
6047 | dogot: | |
6048 | { | |
6049 | /* Relocation is to the entry for this symbol in the global | |
6050 | offset table. */ | |
6051 | bfd_vma off; | |
6052 | bfd_vma *offp; | |
6053 | unsigned long indx; | |
6054 | ||
6055 | if (htab->got == NULL) | |
6056 | abort (); | |
6057 | ||
6058 | indx = 0; | |
6059 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 6060 | && (h == NULL |
f5385ebf | 6061 | || !h->def_dynamic)) |
7619e7c7 AM |
6062 | offp = &htab->tlsld_got.offset; |
6063 | else if (h != NULL) | |
6064 | { | |
6065 | bfd_boolean dyn; | |
6066 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 6067 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
6068 | || (info->shared |
6069 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
6070 | /* This is actually a static link, or it is a | |
6071 | -Bsymbolic link and the symbol is defined | |
6072 | locally, or the symbol was forced to be local | |
6073 | because of a version file. */ | |
6074 | ; | |
6075 | else | |
6076 | { | |
6077 | indx = h->dynindx; | |
6078 | unresolved_reloc = FALSE; | |
6079 | } | |
6080 | offp = &h->got.offset; | |
6081 | } | |
6082 | else | |
6083 | { | |
6084 | if (local_got_offsets == NULL) | |
6085 | abort (); | |
6086 | offp = &local_got_offsets[r_symndx]; | |
6087 | } | |
6088 | ||
6089 | /* The offset must always be a multiple of 4. We use the | |
6090 | least significant bit to record whether we have already | |
6091 | processed this entry. */ | |
6092 | off = *offp; | |
6093 | if ((off & 1) != 0) | |
6094 | off &= ~1; | |
6095 | else | |
6096 | { | |
70bccea4 AM |
6097 | unsigned int tls_m = (tls_mask |
6098 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
6099 | | TLS_TPREL | TLS_TPRELGD)); | |
6100 | ||
6101 | if (offp == &htab->tlsld_got.offset) | |
6102 | tls_m = TLS_LD; | |
6103 | else if (h == NULL | |
f5385ebf | 6104 | || !h->def_dynamic) |
70bccea4 AM |
6105 | tls_m &= ~TLS_LD; |
6106 | ||
6107 | /* We might have multiple got entries for this sym. | |
6108 | Initialize them all. */ | |
6109 | do | |
7619e7c7 | 6110 | { |
70bccea4 AM |
6111 | int tls_ty = 0; |
6112 | ||
6113 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 6114 | { |
70bccea4 AM |
6115 | tls_ty = TLS_TLS | TLS_LD; |
6116 | tls_m &= ~TLS_LD; | |
6117 | } | |
6118 | else if ((tls_m & TLS_GD) != 0) | |
6119 | { | |
6120 | tls_ty = TLS_TLS | TLS_GD; | |
6121 | tls_m &= ~TLS_GD; | |
6122 | } | |
6123 | else if ((tls_m & TLS_DTPREL) != 0) | |
6124 | { | |
6125 | tls_ty = TLS_TLS | TLS_DTPREL; | |
6126 | tls_m &= ~TLS_DTPREL; | |
6127 | } | |
6128 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6129 | { | |
6130 | tls_ty = TLS_TLS | TLS_TPREL; | |
6131 | tls_m = 0; | |
7619e7c7 | 6132 | } |
7619e7c7 | 6133 | |
70bccea4 | 6134 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
6135 | if ((info->shared || indx != 0) |
6136 | && (h == NULL | |
6137 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6138 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 6139 | { |
70bccea4 AM |
6140 | outrel.r_offset = (htab->got->output_section->vma |
6141 | + htab->got->output_offset | |
6142 | + off); | |
e515b051 | 6143 | outrel.r_addend = 0; |
70bccea4 AM |
6144 | if (tls_ty & (TLS_LD | TLS_GD)) |
6145 | { | |
6146 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
6147 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6148 | { | |
6149 | loc = htab->relgot->contents; | |
6150 | loc += (htab->relgot->reloc_count++ | |
6151 | * sizeof (Elf32_External_Rela)); | |
6152 | bfd_elf32_swap_reloca_out (output_bfd, | |
6153 | &outrel, loc); | |
e515b051 | 6154 | outrel.r_offset += 4; |
70bccea4 AM |
6155 | outrel.r_info |
6156 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
6157 | } |
6158 | } | |
6159 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
6160 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
6161 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
6162 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
6163 | else if (indx == 0) | |
6164 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
6165 | else | |
6166 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 6167 | if (indx == 0) |
e515b051 AM |
6168 | { |
6169 | outrel.r_addend += relocation; | |
6170 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 6171 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 6172 | } |
70bccea4 AM |
6173 | loc = htab->relgot->contents; |
6174 | loc += (htab->relgot->reloc_count++ | |
6175 | * sizeof (Elf32_External_Rela)); | |
6176 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
6177 | } |
6178 | ||
70bccea4 AM |
6179 | /* Init the .got section contents if we're not |
6180 | emitting a reloc. */ | |
6181 | else | |
7619e7c7 | 6182 | { |
70bccea4 AM |
6183 | bfd_vma value = relocation; |
6184 | ||
7b609f53 AM |
6185 | if (tls_ty == (TLS_TLS | TLS_LD)) |
6186 | value = 1; | |
6187 | else if (tls_ty != 0) | |
70bccea4 | 6188 | { |
e1918d23 | 6189 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 6190 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 6191 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 6192 | |
7b609f53 AM |
6193 | if (tls_ty == (TLS_TLS | TLS_GD)) |
6194 | { | |
6195 | bfd_put_32 (output_bfd, value, | |
6196 | htab->got->contents + off + 4); | |
6197 | value = 1; | |
6198 | } | |
70bccea4 | 6199 | } |
70bccea4 AM |
6200 | bfd_put_32 (output_bfd, value, |
6201 | htab->got->contents + off); | |
7619e7c7 | 6202 | } |
70bccea4 AM |
6203 | |
6204 | off += 4; | |
6205 | if (tls_ty & (TLS_LD | TLS_GD)) | |
6206 | off += 4; | |
7619e7c7 | 6207 | } |
70bccea4 AM |
6208 | while (tls_m != 0); |
6209 | ||
6210 | off = *offp; | |
6211 | *offp = off | 1; | |
7619e7c7 AM |
6212 | } |
6213 | ||
6214 | if (off >= (bfd_vma) -2) | |
6215 | abort (); | |
6216 | ||
70bccea4 AM |
6217 | if ((tls_type & TLS_TLS) != 0) |
6218 | { | |
6219 | if (tls_type != (TLS_TLS | TLS_LD)) | |
6220 | { | |
6221 | if ((tls_mask & TLS_LD) != 0 | |
6222 | && !(h == NULL | |
f5385ebf | 6223 | || !h->def_dynamic)) |
70bccea4 AM |
6224 | off += 8; |
6225 | if (tls_type != (TLS_TLS | TLS_GD)) | |
6226 | { | |
6227 | if ((tls_mask & TLS_GD) != 0) | |
6228 | off += 8; | |
6229 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
6230 | { | |
6231 | if ((tls_mask & TLS_DTPREL) != 0) | |
6232 | off += 4; | |
6233 | } | |
6234 | } | |
6235 | } | |
6236 | } | |
6237 | ||
3b36f7e6 AM |
6238 | relocation = htab->got->output_offset + off; |
6239 | relocation -= htab->elf.hgot->root.u.def.value; | |
7619e7c7 AM |
6240 | |
6241 | /* Addends on got relocations don't make much sense. | |
6242 | x+off@got is actually x@got+off, and since the got is | |
6243 | generated by a hash table traversal, the value in the | |
6244 | got at entry m+n bears little relation to the entry m. */ | |
6245 | if (addend != 0) | |
6246 | (*_bfd_error_handler) | |
d003868e AM |
6247 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
6248 | input_bfd, | |
6249 | input_section, | |
7619e7c7 | 6250 | (long) rel->r_offset, |
7b609f53 | 6251 | howto->name, |
7619e7c7 AM |
6252 | sym_name); |
6253 | } | |
70bccea4 | 6254 | break; |
7619e7c7 | 6255 | |
252b5132 | 6256 | /* Relocations that need no special processing. */ |
7619e7c7 | 6257 | case R_PPC_LOCAL24PC: |
252b5132 RH |
6258 | /* It makes no sense to point a local relocation |
6259 | at a symbol not in this object. */ | |
7b609f53 | 6260 | if (unresolved_reloc) |
252b5132 | 6261 | { |
464e1740 ILT |
6262 | if (! (*info->callbacks->undefined_symbol) (info, |
6263 | h->root.root.string, | |
6264 | input_bfd, | |
6265 | input_section, | |
5cc7c785 | 6266 | rel->r_offset, |
b34976b6 AM |
6267 | TRUE)) |
6268 | return FALSE; | |
252b5132 RH |
6269 | continue; |
6270 | } | |
6271 | break; | |
6272 | ||
7619e7c7 AM |
6273 | case R_PPC_DTPREL16: |
6274 | case R_PPC_DTPREL16_LO: | |
6275 | case R_PPC_DTPREL16_HI: | |
6276 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 6277 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6278 | break; |
6279 | ||
70bccea4 AM |
6280 | /* Relocations that may need to be propagated if this is a shared |
6281 | object. */ | |
7619e7c7 AM |
6282 | case R_PPC_TPREL16: |
6283 | case R_PPC_TPREL16_LO: | |
6284 | case R_PPC_TPREL16_HI: | |
6285 | case R_PPC_TPREL16_HA: | |
e1918d23 | 6286 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6287 | /* The TPREL16 relocs shouldn't really be used in shared |
6288 | libs as they will result in DT_TEXTREL being set, but | |
6289 | support them anyway. */ | |
6290 | goto dodyn; | |
6291 | ||
6292 | case R_PPC_TPREL32: | |
e1918d23 | 6293 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
6294 | goto dodyn; |
6295 | ||
6296 | case R_PPC_DTPREL32: | |
e1918d23 | 6297 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
6298 | goto dodyn; |
6299 | ||
e515b051 AM |
6300 | case R_PPC_DTPMOD32: |
6301 | relocation = 1; | |
6302 | addend = 0; | |
6303 | goto dodyn; | |
6304 | ||
d7128ce4 AM |
6305 | case R_PPC_REL16: |
6306 | case R_PPC_REL16_LO: | |
6307 | case R_PPC_REL16_HI: | |
6308 | case R_PPC_REL16_HA: | |
6309 | break; | |
6310 | ||
7619e7c7 AM |
6311 | case R_PPC_REL24: |
6312 | case R_PPC_REL32: | |
6313 | case R_PPC_REL14: | |
6314 | case R_PPC_REL14_BRTAKEN: | |
6315 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
6316 | /* If these relocations are not to a named symbol, they can be |
6317 | handled right here, no need to bother the dynamic linker. */ | |
f6c52c13 | 6318 | if (SYMBOL_REFERENCES_LOCAL (info, h) |
3b36f7e6 | 6319 | || h == htab->elf.hgot) |
252b5132 | 6320 | break; |
70bccea4 | 6321 | /* fall through */ |
252b5132 | 6322 | |
70bccea4 AM |
6323 | /* Relocations that always need to be propagated if this is a shared |
6324 | object. */ | |
7619e7c7 AM |
6325 | case R_PPC_ADDR32: |
6326 | case R_PPC_ADDR24: | |
6327 | case R_PPC_ADDR16: | |
6328 | case R_PPC_ADDR16_LO: | |
6329 | case R_PPC_ADDR16_HI: | |
6330 | case R_PPC_ADDR16_HA: | |
6331 | case R_PPC_ADDR14: | |
6332 | case R_PPC_ADDR14_BRTAKEN: | |
6333 | case R_PPC_ADDR14_BRNTAKEN: | |
6334 | case R_PPC_UADDR32: | |
6335 | case R_PPC_UADDR16: | |
7619e7c7 | 6336 | dodyn: |
c87b5a93 AM |
6337 | if ((input_section->flags & SEC_ALLOC) == 0) |
6338 | break; | |
6339 | /* Fall thru. */ | |
6340 | ||
ee05f2fe | 6341 | if ((info->shared |
4e795f50 AM |
6342 | && (h == NULL |
6343 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6344 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe | 6345 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 6346 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
6347 | || (ELIMINATE_COPY_RELOCS |
6348 | && !info->shared | |
ee05f2fe AM |
6349 | && h != NULL |
6350 | && h->dynindx != -1 | |
f5385ebf AM |
6351 | && !h->non_got_ref |
6352 | && h->def_dynamic | |
6353 | && !h->def_regular)) | |
252b5132 | 6354 | { |
0bb2d96a | 6355 | int skip; |
252b5132 RH |
6356 | |
6357 | #ifdef DEBUG | |
55fd94b0 AM |
6358 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
6359 | "create relocation for %s\n", | |
70bccea4 AM |
6360 | (h && h->root.root.string |
6361 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
6362 | #endif |
6363 | ||
6364 | /* When generating a shared object, these relocations | |
70bccea4 AM |
6365 | are copied into the output file to be resolved at run |
6366 | time. */ | |
252b5132 RH |
6367 | if (sreloc == NULL) |
6368 | { | |
6369 | const char *name; | |
6370 | ||
6371 | name = (bfd_elf_string_from_elf_section | |
6372 | (input_bfd, | |
6373 | elf_elfheader (input_bfd)->e_shstrndx, | |
6374 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
6375 | if (name == NULL) | |
b34976b6 | 6376 | return FALSE; |
252b5132 | 6377 | |
0112cd26 | 6378 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
252b5132 RH |
6379 | && strcmp (bfd_get_section_name (input_bfd, |
6380 | input_section), | |
6381 | name + 5) == 0); | |
6382 | ||
7619e7c7 | 6383 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
6384 | BFD_ASSERT (sreloc != NULL); |
6385 | } | |
6386 | ||
0bb2d96a | 6387 | skip = 0; |
252b5132 | 6388 | |
c629eae0 JJ |
6389 | outrel.r_offset = |
6390 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6391 | rel->r_offset); | |
0bb2d96a JJ |
6392 | if (outrel.r_offset == (bfd_vma) -1 |
6393 | || outrel.r_offset == (bfd_vma) -2) | |
6394 | skip = (int) outrel.r_offset; | |
252b5132 RH |
6395 | outrel.r_offset += (input_section->output_section->vma |
6396 | + input_section->output_offset); | |
6397 | ||
6398 | if (skip) | |
6399 | memset (&outrel, 0, sizeof outrel); | |
f6c52c13 | 6400 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 6401 | { |
7619e7c7 | 6402 | unresolved_reloc = FALSE; |
252b5132 RH |
6403 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
6404 | outrel.r_addend = rel->r_addend; | |
6405 | } | |
6406 | else | |
6407 | { | |
47388f4c AM |
6408 | outrel.r_addend = relocation + rel->r_addend; |
6409 | ||
252b5132 | 6410 | if (r_type == R_PPC_ADDR32) |
47388f4c | 6411 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
6412 | else |
6413 | { | |
6414 | long indx; | |
6415 | ||
47388f4c | 6416 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
6417 | indx = 0; |
6418 | else if (sec == NULL || sec->owner == NULL) | |
6419 | { | |
6420 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6421 | return FALSE; |
252b5132 RH |
6422 | } |
6423 | else | |
6424 | { | |
6425 | asection *osec; | |
6426 | ||
47388f4c AM |
6427 | /* We are turning this relocation into one |
6428 | against a section symbol. It would be | |
6429 | proper to subtract the symbol's value, | |
6430 | osec->vma, from the emitted reloc addend, | |
6431 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
6432 | osec = sec->output_section; |
6433 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
6434 | if (indx == 0) |
6435 | { | |
6436 | osec = htab->elf.text_index_section; | |
6437 | indx = elf_section_data (osec)->dynindx; | |
6438 | } | |
6439 | BFD_ASSERT (indx != 0); | |
252b5132 | 6440 | #ifdef DEBUG |
74541ad4 | 6441 | if (indx == 0) |
e460dd0d | 6442 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
6443 | indx, osec->name, osec->flags, |
6444 | h->root.root.string); | |
252b5132 RH |
6445 | #endif |
6446 | } | |
6447 | ||
6448 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
6449 | } |
6450 | } | |
6451 | ||
947216bf AM |
6452 | loc = sreloc->contents; |
6453 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
6454 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 6455 | |
2243deae | 6456 | if (skip == -1) |
252b5132 | 6457 | continue; |
2243deae L |
6458 | |
6459 | /* This reloc will be computed at runtime. We clear the memory | |
6460 | so that it contains predictable value. */ | |
6461 | if (! skip | |
6462 | && ((input_section->flags & SEC_ALLOC) != 0 | |
6463 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
6464 | { | |
6465 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
6466 | addend = 0; | |
6467 | break; | |
6468 | } | |
252b5132 | 6469 | } |
252b5132 RH |
6470 | break; |
6471 | ||
b4a38de6 AM |
6472 | case R_PPC_RELAX32PC_PLT: |
6473 | case R_PPC_RELAX32_PLT: | |
a6aa5195 AM |
6474 | { |
6475 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
6476 | ||
4a3dc543 | 6477 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
6478 | relocation = (htab->glink->output_section->vma |
6479 | + htab->glink->output_offset | |
6480 | + ent->glink_offset); | |
6481 | else | |
6482 | relocation = (htab->plt->output_section->vma | |
6483 | + htab->plt->output_offset | |
6484 | + ent->plt.offset); | |
6485 | addend = 0; | |
6486 | } | |
b4a38de6 AM |
6487 | if (r_type == R_PPC_RELAX32_PLT) |
6488 | goto relax32; | |
6489 | /* Fall thru */ | |
6490 | ||
f31a141e AM |
6491 | case R_PPC_RELAX32PC: |
6492 | relocation -= (input_section->output_section->vma | |
6493 | + input_section->output_offset | |
6494 | + rel->r_offset - 4); | |
6495 | /* Fall thru */ | |
b4a38de6 | 6496 | |
deaaf2f3 | 6497 | case R_PPC_RELAX32: |
b4a38de6 | 6498 | relax32: |
9abc968f AM |
6499 | { |
6500 | unsigned long t0; | |
6501 | unsigned long t1; | |
6502 | ||
6503 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
6504 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
6505 | ||
6506 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
6507 | and R_PPC_ADDR16_LO here. */ | |
6508 | t0 &= ~0xffff; | |
6509 | t1 &= ~0xffff; | |
6510 | ||
6511 | /* t0 is HA, t1 is LO */ | |
6512 | relocation += addend; | |
6513 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
6514 | t1 |= relocation & 0xffff; | |
6515 | ||
6516 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
6517 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
6518 | } | |
8517fae7 | 6519 | continue; |
deaaf2f3 | 6520 | |
70bccea4 | 6521 | /* Indirect .sdata relocation. */ |
7619e7c7 | 6522 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 6523 | BFD_ASSERT (htab->sdata[0].section != NULL); |
7619e7c7 | 6524 | relocation |
76750a2f AM |
6525 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
6526 | h, relocation, rel); | |
252b5132 RH |
6527 | break; |
6528 | ||
70bccea4 | 6529 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 6530 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 6531 | BFD_ASSERT (htab->sdata[1].section != NULL); |
7619e7c7 | 6532 | relocation |
76750a2f AM |
6533 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
6534 | h, relocation, rel); | |
252b5132 RH |
6535 | break; |
6536 | ||
70bccea4 AM |
6537 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
6538 | section, not the actual VMA. This is appropriate when generating | |
6539 | an embedded ELF object, for which the .got section acts like the | |
6540 | AIX .toc section. */ | |
7619e7c7 | 6541 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 6542 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
6543 | BFD_ASSERT (bfd_is_und_section (sec) |
6544 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 6545 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 6546 | |
70bccea4 | 6547 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
6548 | break; |
6549 | ||
7619e7c7 | 6550 | case R_PPC_PLTREL24: |
252b5132 | 6551 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 6552 | procedure linkage table. */ |
a6aa5195 AM |
6553 | { |
6554 | struct plt_entry *ent = find_plt_ent (h, got2, addend); | |
252b5132 | 6555 | |
a6aa5195 AM |
6556 | addend = 0; |
6557 | if (ent == NULL | |
6558 | || htab->plt == NULL) | |
6559 | { | |
6560 | /* We didn't make a PLT entry for this symbol. This | |
6561 | happens when statically linking PIC code, or when | |
6562 | using -Bsymbolic. */ | |
6563 | break; | |
6564 | } | |
252b5132 | 6565 | |
a6aa5195 | 6566 | unresolved_reloc = FALSE; |
4a3dc543 | 6567 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
6568 | relocation = (htab->glink->output_section->vma |
6569 | + htab->glink->output_offset | |
6570 | + ent->glink_offset); | |
6571 | else | |
6572 | relocation = (htab->plt->output_section->vma | |
6573 | + htab->plt->output_offset | |
6574 | + ent->plt.offset); | |
6575 | } | |
8da6118f | 6576 | break; |
252b5132 | 6577 | |
70bccea4 | 6578 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 6579 | case R_PPC_SDAREL16: |
252b5132 RH |
6580 | { |
6581 | const char *name; | |
046183de | 6582 | struct elf_link_hash_entry *sh; |
252b5132 | 6583 | |
55fd94b0 | 6584 | BFD_ASSERT (sec != NULL); |
252b5132 | 6585 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 6586 | if (! ((CONST_STRNEQ (name, ".sdata") |
5f819128 | 6587 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 6588 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 6589 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 | 6590 | { |
55fd94b0 | 6591 | (*_bfd_error_handler) |
d003868e | 6592 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6593 | "in the wrong output section (%s)"), |
d003868e | 6594 | input_bfd, |
55fd94b0 AM |
6595 | sym_name, |
6596 | howto->name, | |
6597 | name); | |
252b5132 | 6598 | } |
046183de AM |
6599 | sh = htab->sdata[0].sym; |
6600 | addend -= (sh->root.u.def.value | |
6601 | + sh->root.u.def.section->output_offset | |
6602 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6603 | } |
6604 | break; | |
6605 | ||
70bccea4 | 6606 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 6607 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
6608 | { |
6609 | const char *name; | |
046183de | 6610 | struct elf_link_hash_entry *sh; |
252b5132 | 6611 | |
55fd94b0 | 6612 | BFD_ASSERT (sec != NULL); |
252b5132 | 6613 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 NC |
6614 | if (! (CONST_STRNEQ (name, ".sdata2") |
6615 | || CONST_STRNEQ (name, ".sbss2"))) | |
252b5132 | 6616 | { |
55fd94b0 | 6617 | (*_bfd_error_handler) |
d003868e | 6618 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6619 | "in the wrong output section (%s)"), |
d003868e | 6620 | input_bfd, |
55fd94b0 AM |
6621 | sym_name, |
6622 | howto->name, | |
6623 | name); | |
c3668558 | 6624 | |
252b5132 | 6625 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6626 | ret = FALSE; |
252b5132 RH |
6627 | continue; |
6628 | } | |
046183de AM |
6629 | sh = htab->sdata[1].sym; |
6630 | addend -= (sh->root.u.def.value | |
6631 | + sh->root.u.def.section->output_offset | |
6632 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6633 | } |
6634 | break; | |
6635 | ||
70bccea4 | 6636 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
6637 | case R_PPC_EMB_SDA21: |
6638 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
6639 | { |
6640 | const char *name; | |
6641 | int reg; | |
046183de | 6642 | struct elf_link_hash_entry *sh; |
252b5132 | 6643 | |
55fd94b0 | 6644 | BFD_ASSERT (sec != NULL); |
252b5132 | 6645 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 6646 | if (((CONST_STRNEQ (name, ".sdata") |
5f819128 | 6647 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 6648 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 6649 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 RH |
6650 | { |
6651 | reg = 13; | |
046183de AM |
6652 | sh = htab->sdata[0].sym; |
6653 | addend -= (sh->root.u.def.value | |
6654 | + sh->root.u.def.section->output_offset | |
6655 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6656 | } |
6657 | ||
0112cd26 NC |
6658 | else if (CONST_STRNEQ (name, ".sdata2") |
6659 | || CONST_STRNEQ (name, ".sbss2")) | |
252b5132 RH |
6660 | { |
6661 | reg = 2; | |
046183de AM |
6662 | sh = htab->sdata[1].sym; |
6663 | addend -= (sh->root.u.def.value | |
6664 | + sh->root.u.def.section->output_offset | |
6665 | + sh->root.u.def.section->output_section->vma); | |
252b5132 RH |
6666 | } |
6667 | ||
8da6118f KH |
6668 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
6669 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
6670 | { |
6671 | reg = 0; | |
6672 | } | |
6673 | ||
6674 | else | |
6675 | { | |
55fd94b0 | 6676 | (*_bfd_error_handler) |
d003868e | 6677 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 6678 | "in the wrong output section (%s)"), |
d003868e | 6679 | input_bfd, |
55fd94b0 AM |
6680 | sym_name, |
6681 | howto->name, | |
6682 | name); | |
252b5132 RH |
6683 | |
6684 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 6685 | ret = FALSE; |
252b5132 RH |
6686 | continue; |
6687 | } | |
6688 | ||
6689 | if (r_type == R_PPC_EMB_SDA21) | |
6690 | { /* fill in register field */ | |
7619e7c7 | 6691 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 6692 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 6693 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
6694 | } |
6695 | } | |
6696 | break; | |
6697 | ||
70bccea4 | 6698 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
6699 | case R_PPC_SECTOFF: |
6700 | case R_PPC_SECTOFF_LO: | |
6701 | case R_PPC_SECTOFF_HI: | |
6702 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 6703 | BFD_ASSERT (sec != NULL); |
252b5132 | 6704 | addend -= sec->output_section->vma; |
252b5132 RH |
6705 | break; |
6706 | ||
70bccea4 | 6707 | /* Negative relocations. */ |
7619e7c7 AM |
6708 | case R_PPC_EMB_NADDR32: |
6709 | case R_PPC_EMB_NADDR16: | |
6710 | case R_PPC_EMB_NADDR16_LO: | |
6711 | case R_PPC_EMB_NADDR16_HI: | |
6712 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 6713 | addend -= 2 * relocation; |
252b5132 RH |
6714 | break; |
6715 | ||
7619e7c7 AM |
6716 | case R_PPC_COPY: |
6717 | case R_PPC_GLOB_DAT: | |
6718 | case R_PPC_JMP_SLOT: | |
6719 | case R_PPC_RELATIVE: | |
6720 | case R_PPC_PLT32: | |
6721 | case R_PPC_PLTREL32: | |
6722 | case R_PPC_PLT16_LO: | |
6723 | case R_PPC_PLT16_HI: | |
6724 | case R_PPC_PLT16_HA: | |
6725 | case R_PPC_ADDR30: | |
6726 | case R_PPC_EMB_RELSEC16: | |
6727 | case R_PPC_EMB_RELST_LO: | |
6728 | case R_PPC_EMB_RELST_HI: | |
6729 | case R_PPC_EMB_RELST_HA: | |
6730 | case R_PPC_EMB_BIT_FLD: | |
6731 | (*_bfd_error_handler) | |
d003868e AM |
6732 | (_("%B: relocation %s is not yet supported for symbol %s."), |
6733 | input_bfd, | |
7619e7c7 AM |
6734 | howto->name, |
6735 | sym_name); | |
252b5132 RH |
6736 | |
6737 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 6738 | ret = FALSE; |
252b5132 | 6739 | continue; |
7619e7c7 | 6740 | } |
252b5132 | 6741 | |
7619e7c7 AM |
6742 | /* Do any further special processing. */ |
6743 | switch (r_type) | |
6744 | { | |
6745 | default: | |
6746 | break; | |
6747 | ||
6748 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 6749 | case R_PPC_REL16_HA: |
7619e7c7 AM |
6750 | case R_PPC_SECTOFF_HA: |
6751 | case R_PPC_TPREL16_HA: | |
6752 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
6753 | case R_PPC_EMB_NADDR16_HA: |
6754 | case R_PPC_EMB_RELST_HA: | |
6755 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 6756 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
6757 | 'sec' would be NULL, and we should leave the symbol |
6758 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
6759 | if (sec == NULL) |
6760 | break; | |
6761 | /* Fall thru */ | |
6762 | ||
6763 | case R_PPC_PLT16_HA: | |
6764 | case R_PPC_GOT16_HA: | |
6765 | case R_PPC_GOT_TLSGD16_HA: | |
6766 | case R_PPC_GOT_TLSLD16_HA: | |
6767 | case R_PPC_GOT_TPREL16_HA: | |
6768 | case R_PPC_GOT_DTPREL16_HA: | |
6769 | /* Add 0x10000 if sign bit in 0:15 is set. | |
6770 | Bits 0:15 are not used. */ | |
6771 | addend += 0x8000; | |
7619e7c7 | 6772 | break; |
252b5132 RH |
6773 | } |
6774 | ||
252b5132 | 6775 | #ifdef DEBUG |
55fd94b0 AM |
6776 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
6777 | "offset = %ld, addend = %ld\n", | |
252b5132 | 6778 | howto->name, |
8da6118f | 6779 | (int) r_type, |
252b5132 RH |
6780 | sym_name, |
6781 | r_symndx, | |
7619e7c7 | 6782 | (long) rel->r_offset, |
8da6118f | 6783 | (long) addend); |
252b5132 RH |
6784 | #endif |
6785 | ||
7619e7c7 AM |
6786 | if (unresolved_reloc |
6787 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 6788 | && h->def_dynamic)) |
7619e7c7 AM |
6789 | { |
6790 | (*_bfd_error_handler) | |
d003868e AM |
6791 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
6792 | input_bfd, | |
6793 | input_section, | |
7619e7c7 | 6794 | (long) rel->r_offset, |
7b609f53 | 6795 | howto->name, |
7619e7c7 AM |
6796 | sym_name); |
6797 | ret = FALSE; | |
6798 | } | |
6799 | ||
252b5132 RH |
6800 | r = _bfd_final_link_relocate (howto, |
6801 | input_bfd, | |
6802 | input_section, | |
6803 | contents, | |
7619e7c7 | 6804 | rel->r_offset, |
252b5132 RH |
6805 | relocation, |
6806 | addend); | |
6807 | ||
7619e7c7 | 6808 | if (r != bfd_reloc_ok) |
252b5132 | 6809 | { |
7619e7c7 | 6810 | if (r == bfd_reloc_overflow) |
252b5132 | 6811 | { |
7619e7c7 AM |
6812 | if (warned) |
6813 | continue; | |
6814 | if (h != NULL | |
6815 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
6816 | && howto->pc_relative) |
6817 | { | |
6818 | /* Assume this is a call protected by other code that | |
6819 | detect the symbol is undefined. If this is the case, | |
6820 | we can safely ignore the overflow. If not, the | |
6821 | program is hosed anyway, and a little warning isn't | |
6822 | going to help. */ | |
252b5132 | 6823 | |
dc1bc0c9 RH |
6824 | continue; |
6825 | } | |
252b5132 | 6826 | |
7619e7c7 | 6827 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 6828 | (h ? &h->root : NULL), |
7619e7c7 AM |
6829 | sym_name, |
6830 | howto->name, | |
6831 | rel->r_addend, | |
6832 | input_bfd, | |
6833 | input_section, | |
6834 | rel->r_offset)) | |
6835 | return FALSE; | |
dc1bc0c9 RH |
6836 | } |
6837 | else | |
6838 | { | |
7619e7c7 | 6839 | (*_bfd_error_handler) |
d003868e AM |
6840 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
6841 | input_bfd, input_section, | |
7b609f53 | 6842 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 6843 | ret = FALSE; |
252b5132 RH |
6844 | } |
6845 | } | |
6846 | } | |
6847 | ||
252b5132 RH |
6848 | #ifdef DEBUG |
6849 | fprintf (stderr, "\n"); | |
6850 | #endif | |
6851 | ||
6852 | return ret; | |
6853 | } | |
252b5132 | 6854 | \f |
a6aa5195 AM |
6855 | #define PPC_LO(v) ((v) & 0xffff) |
6856 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6857 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6858 | ||
25dbc73a AM |
6859 | /* Finish up dynamic symbol handling. We set the contents of various |
6860 | dynamic sections here. */ | |
c5fccbec | 6861 | |
b34976b6 | 6862 | static bfd_boolean |
25dbc73a AM |
6863 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
6864 | struct bfd_link_info *info, | |
6865 | struct elf_link_hash_entry *h, | |
6866 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 6867 | { |
25dbc73a | 6868 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
6869 | struct plt_entry *ent; |
6870 | bfd_boolean doneone; | |
e1a9cb8e | 6871 | |
25dbc73a AM |
6872 | #ifdef DEBUG |
6873 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
6874 | h->root.root.string); | |
6875 | #endif | |
e1a9cb8e | 6876 | |
25dbc73a AM |
6877 | htab = ppc_elf_hash_table (info); |
6878 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 6879 | |
a6aa5195 AM |
6880 | doneone = FALSE; |
6881 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6882 | if (ent->plt.offset != (bfd_vma) -1) | |
6883 | { | |
6884 | if (!doneone) | |
6885 | { | |
6886 | Elf_Internal_Rela rela; | |
6887 | bfd_byte *loc; | |
6888 | bfd_vma reloc_index; | |
e1a9cb8e | 6889 | |
4a3dc543 | 6890 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
6891 | reloc_index = ent->plt.offset / 4; |
6892 | else | |
6893 | { | |
6894 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
6895 | / htab->plt_slot_size); | |
6896 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 6897 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
6898 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
6899 | } | |
6900 | ||
a6aa5195 AM |
6901 | /* This symbol has an entry in the procedure linkage table. |
6902 | Set it up. */ | |
4a3dc543 | 6903 | if (htab->plt_type == PLT_VXWORKS) |
a6aa5195 | 6904 | { |
9d8504b1 PB |
6905 | bfd_vma got_offset; |
6906 | const bfd_vma *plt_entry; | |
6907 | ||
6908 | /* The first three entries in .got.plt are reserved. */ | |
6909 | got_offset = (reloc_index + 3) * 4; | |
6910 | ||
6911 | /* Use the right PLT. */ | |
6912 | plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry | |
6913 | : ppc_elf_vxworks_plt_entry; | |
6914 | ||
6915 | /* Fill in the .plt on VxWorks. */ | |
6916 | if (info->shared) | |
6917 | { | |
6918 | bfd_vma got_offset_hi = (got_offset >> 16) | |
6919 | + ((got_offset & 0x8000) >> 15); | |
6920 | ||
6921 | bfd_put_32 (output_bfd, | |
6922 | plt_entry[0] | (got_offset_hi & 0xffff), | |
6923 | htab->plt->contents + ent->plt.offset + 0); | |
6924 | bfd_put_32 (output_bfd, | |
6925 | plt_entry[1] | (got_offset & 0xffff), | |
6926 | htab->plt->contents + ent->plt.offset + 4); | |
6927 | } | |
6928 | else | |
6929 | { | |
636ce3f5 AM |
6930 | bfd_vma got_loc |
6931 | = (got_offset | |
6932 | + htab->elf.hgot->root.u.def.value | |
6933 | + htab->elf.hgot->root.u.def.section->output_offset | |
6934 | + htab->elf.hgot->root.u.def.section->output_section->vma); | |
9d8504b1 PB |
6935 | bfd_vma got_loc_hi = (got_loc >> 16) |
6936 | + ((got_loc & 0x8000) >> 15); | |
6937 | ||
6938 | bfd_put_32 (output_bfd, | |
6939 | plt_entry[0] | (got_loc_hi & 0xffff), | |
6940 | htab->plt->contents + ent->plt.offset + 0); | |
6941 | bfd_put_32 (output_bfd, | |
6942 | plt_entry[1] | (got_loc & 0xffff), | |
6943 | htab->plt->contents + ent->plt.offset + 4); | |
6944 | } | |
6945 | ||
6946 | bfd_put_32 (output_bfd, plt_entry[2], | |
6947 | htab->plt->contents + ent->plt.offset + 8); | |
6948 | bfd_put_32 (output_bfd, plt_entry[3], | |
6949 | htab->plt->contents + ent->plt.offset + 12); | |
6950 | ||
6951 | /* This instruction is an immediate load. The value loaded is | |
6952 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
6953 | start of the .rela.plt section. The value is stored in the | |
6954 | low-order 16 bits of the load instruction. */ | |
6955 | /* NOTE: It appears that this is now an index rather than a | |
6956 | prescaled offset. */ | |
6957 | bfd_put_32 (output_bfd, | |
6958 | plt_entry[4] | reloc_index, | |
6959 | htab->plt->contents + ent->plt.offset + 16); | |
6960 | /* This instruction is a PC-relative branch whose target is | |
6961 | the start of the PLT section. The address of this branch | |
6962 | instruction is 20 bytes beyond the start of this PLT entry. | |
6963 | The address is encoded in bits 6-29, inclusive. The value | |
6964 | stored is right-shifted by two bits, permitting a 26-bit | |
6965 | offset. */ | |
6966 | bfd_put_32 (output_bfd, | |
6967 | (plt_entry[5] | |
6968 | | (-(ent->plt.offset + 20) & 0x03fffffc)), | |
6969 | htab->plt->contents + ent->plt.offset + 20); | |
6970 | bfd_put_32 (output_bfd, plt_entry[6], | |
6971 | htab->plt->contents + ent->plt.offset + 24); | |
6972 | bfd_put_32 (output_bfd, plt_entry[7], | |
6973 | htab->plt->contents + ent->plt.offset + 28); | |
6974 | ||
6975 | /* Fill in the GOT entry corresponding to this PLT slot with | |
6976 | the address immediately after the the "bctr" instruction | |
6977 | in this PLT entry. */ | |
6978 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
6979 | + htab->plt->output_offset | |
6980 | + ent->plt.offset + 16), | |
6981 | htab->sgotplt->contents + got_offset); | |
6982 | ||
6983 | if (!info->shared) | |
6984 | { | |
6985 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
6986 | loc = htab->srelplt2->contents | |
6987 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
6988 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
6989 | * sizeof (Elf32_External_Rela)); | |
6990 | ||
6991 | /* Provide the @ha relocation for the first instruction. */ | |
6992 | rela.r_offset = (htab->plt->output_section->vma | |
6993 | + htab->plt->output_offset | |
6994 | + ent->plt.offset + 2); | |
636ce3f5 | 6995 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
6996 | R_PPC_ADDR16_HA); |
6997 | rela.r_addend = got_offset; | |
6998 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
6999 | loc += sizeof (Elf32_External_Rela); | |
7000 | ||
7001 | /* Provide the @l relocation for the second instruction. */ | |
7002 | rela.r_offset = (htab->plt->output_section->vma | |
7003 | + htab->plt->output_offset | |
7004 | + ent->plt.offset + 6); | |
636ce3f5 | 7005 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
7006 | R_PPC_ADDR16_LO); |
7007 | rela.r_addend = got_offset; | |
7008 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7009 | loc += sizeof (Elf32_External_Rela); | |
7010 | ||
7011 | /* Provide a relocation for the GOT entry corresponding to this | |
7012 | PLT slot. Point it at the middle of the .plt entry. */ | |
7013 | rela.r_offset = (htab->sgotplt->output_section->vma | |
7014 | + htab->sgotplt->output_offset | |
7015 | + got_offset); | |
7325306f | 7016 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
7017 | R_PPC_ADDR32); |
7018 | rela.r_addend = ent->plt.offset + 16; | |
7019 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7020 | } | |
7021 | ||
7022 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
7023 | In particular, the offset for the relocation is not the | |
7024 | address of the PLT entry for this function, as specified | |
7025 | by the ABI. Instead, the offset is set to the address of | |
7026 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
7027 | rela.r_offset = (htab->sgotplt->output_section->vma | |
7028 | + htab->sgotplt->output_offset | |
7029 | + got_offset); | |
7030 | ||
a6aa5195 AM |
7031 | } |
7032 | else | |
7033 | { | |
9d8504b1 PB |
7034 | rela.r_offset = (htab->plt->output_section->vma |
7035 | + htab->plt->output_offset | |
7036 | + ent->plt.offset); | |
4a3dc543 | 7037 | if (htab->plt_type == PLT_OLD) |
9d8504b1 PB |
7038 | { |
7039 | /* We don't need to fill in the .plt. The ppc dynamic | |
7040 | linker will fill it in. */ | |
7041 | } | |
7042 | else | |
7043 | { | |
7044 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
7045 | + htab->glink->output_section->vma | |
7046 | + htab->glink->output_offset); | |
7047 | bfd_put_32 (output_bfd, val, | |
7048 | htab->plt->contents + ent->plt.offset); | |
7049 | } | |
a6aa5195 | 7050 | } |
e1a9cb8e | 7051 | |
a6aa5195 | 7052 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 AM |
7053 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); |
7054 | rela.r_addend = 0; | |
e1a9cb8e | 7055 | |
a6aa5195 AM |
7056 | loc = (htab->relplt->contents |
7057 | + reloc_index * sizeof (Elf32_External_Rela)); | |
7058 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
e1a9cb8e | 7059 | |
a6aa5195 AM |
7060 | if (!h->def_regular) |
7061 | { | |
7062 | /* Mark the symbol as undefined, rather than as defined in | |
7063 | the .plt section. Leave the value alone. */ | |
7064 | sym->st_shndx = SHN_UNDEF; | |
7065 | /* If the symbol is weak, we do need to clear the value. | |
7066 | Otherwise, the PLT entry would provide a definition for | |
7067 | the symbol even if the symbol wasn't defined anywhere, | |
7068 | and so the symbol would never be NULL. */ | |
7069 | if (!h->ref_regular_nonweak) | |
7070 | sym->st_value = 0; | |
7071 | } | |
7072 | doneone = TRUE; | |
7073 | } | |
e1a9cb8e | 7074 | |
4a3dc543 | 7075 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
7076 | { |
7077 | bfd_vma plt; | |
7078 | unsigned char *p; | |
e1a9cb8e | 7079 | |
a6aa5195 AM |
7080 | plt = (ent->plt.offset |
7081 | + htab->plt->output_section->vma | |
7082 | + htab->plt->output_offset); | |
7083 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; | |
e1a9cb8e | 7084 | |
a6aa5195 AM |
7085 | if (info->shared || info->pie) |
7086 | { | |
7087 | bfd_vma got = 0; | |
7088 | ||
7089 | if (ent->addend >= 32768) | |
7090 | got = (ent->addend | |
7091 | + ent->sec->output_section->vma | |
7092 | + ent->sec->output_offset); | |
7093 | else if (htab->elf.hgot != NULL) | |
7094 | got = (htab->elf.hgot->root.u.def.value | |
7095 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
7096 | + htab->elf.hgot->root.u.def.section->output_offset); | |
7097 | ||
7098 | plt -= got; | |
7099 | ||
7100 | if (plt + 0x8000 < 0x10000) | |
7101 | { | |
7102 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
7103 | p += 4; | |
7104 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7105 | p += 4; | |
7106 | bfd_put_32 (output_bfd, BCTR, p); | |
7107 | p += 4; | |
7108 | bfd_put_32 (output_bfd, NOP, p); | |
7109 | p += 4; | |
7110 | } | |
7111 | else | |
7112 | { | |
7113 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7114 | p += 4; | |
7115 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7116 | p += 4; | |
7117 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7118 | p += 4; | |
7119 | bfd_put_32 (output_bfd, BCTR, p); | |
7120 | p += 4; | |
7121 | } | |
7122 | } | |
7123 | else | |
7124 | { | |
7125 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7126 | p += 4; | |
7127 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7128 | p += 4; | |
7129 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7130 | p += 4; | |
7131 | bfd_put_32 (output_bfd, BCTR, p); | |
7132 | p += 4; | |
28e99bb6 AM |
7133 | |
7134 | /* We only need one non-PIC glink stub. */ | |
7135 | break; | |
a6aa5195 AM |
7136 | } |
7137 | } | |
7138 | else | |
7139 | break; | |
7140 | } | |
e1a9cb8e | 7141 | |
25dbc73a AM |
7142 | if (h->needs_copy) |
7143 | { | |
7144 | asection *s; | |
7145 | Elf_Internal_Rela rela; | |
7146 | bfd_byte *loc; | |
e1a9cb8e | 7147 | |
25dbc73a | 7148 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 7149 | |
25dbc73a AM |
7150 | #ifdef DEBUG |
7151 | fprintf (stderr, ", copy"); | |
7152 | #endif | |
e1a9cb8e | 7153 | |
25dbc73a | 7154 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 7155 | |
4dc4a9a5 | 7156 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
7157 | s = htab->relsbss; |
7158 | else | |
7159 | s = htab->relbss; | |
7160 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 7161 | |
25dbc73a AM |
7162 | rela.r_offset = (h->root.u.def.value |
7163 | + h->root.u.def.section->output_section->vma | |
7164 | + h->root.u.def.section->output_offset); | |
7165 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
7166 | rela.r_addend = 0; | |
7167 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
7168 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7169 | } | |
e1a9cb8e | 7170 | |
25dbc73a AM |
7171 | #ifdef DEBUG |
7172 | fprintf (stderr, "\n"); | |
7173 | #endif | |
e1a9cb8e | 7174 | |
25dbc73a | 7175 | /* Mark some specially defined symbols as absolute. */ |
9d8504b1 PB |
7176 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
7177 | || (!htab->is_vxworks | |
7178 | && (h == htab->elf.hgot | |
7179 | || strcmp (h->root.root.string, | |
7180 | "_PROCEDURE_LINKAGE_TABLE_") == 0))) | |
25dbc73a | 7181 | sym->st_shndx = SHN_ABS; |
e1a9cb8e | 7182 | |
25dbc73a AM |
7183 | return TRUE; |
7184 | } | |
7185 | \f | |
7186 | static enum elf_reloc_type_class | |
7187 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
e1a9cb8e | 7188 | { |
25dbc73a AM |
7189 | switch (ELF32_R_TYPE (rela->r_info)) |
7190 | { | |
7191 | case R_PPC_RELATIVE: | |
7192 | return reloc_class_relative; | |
7193 | case R_PPC_REL24: | |
7194 | case R_PPC_ADDR24: | |
7195 | case R_PPC_JMP_SLOT: | |
7196 | return reloc_class_plt; | |
7197 | case R_PPC_COPY: | |
7198 | return reloc_class_copy; | |
7199 | default: | |
7200 | return reloc_class_normal; | |
7201 | } | |
e1a9cb8e | 7202 | } |
25dbc73a AM |
7203 | \f |
7204 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 7205 | |
25dbc73a AM |
7206 | static bfd_boolean |
7207 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
7208 | struct bfd_link_info *info) | |
e1a9cb8e | 7209 | { |
25dbc73a | 7210 | asection *sdyn; |
9d8504b1 | 7211 | asection *splt; |
25dbc73a | 7212 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 7213 | bfd_vma got; |
9d8504b1 | 7214 | bfd * dynobj; |
e1a9cb8e | 7215 | |
25dbc73a AM |
7216 | #ifdef DEBUG |
7217 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
7218 | #endif | |
6b0817e5 | 7219 | |
25dbc73a | 7220 | htab = ppc_elf_hash_table (info); |
9d8504b1 PB |
7221 | dynobj = elf_hash_table (info)->dynobj; |
7222 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
7223 | if (htab->is_vxworks) | |
7224 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
7225 | else | |
7226 | splt = NULL; | |
e1a9cb8e | 7227 | |
1fe44d79 AM |
7228 | got = 0; |
7229 | if (htab->elf.hgot != NULL) | |
7230 | got = (htab->elf.hgot->root.u.def.value | |
7231 | + htab->elf.hgot->root.u.def.section->output_section->vma | |
7232 | + htab->elf.hgot->root.u.def.section->output_offset); | |
7233 | ||
25dbc73a | 7234 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 7235 | { |
25dbc73a | 7236 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 7237 | |
25dbc73a | 7238 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 7239 | |
25dbc73a AM |
7240 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
7241 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
7242 | for (; dyncon < dynconend; dyncon++) | |
7243 | { | |
7244 | Elf_Internal_Dyn dyn; | |
7245 | asection *s; | |
e1a9cb8e | 7246 | |
9d8504b1 | 7247 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 7248 | |
25dbc73a AM |
7249 | switch (dyn.d_tag) |
7250 | { | |
7251 | case DT_PLTGOT: | |
9d8504b1 PB |
7252 | if (htab->is_vxworks) |
7253 | s = htab->sgotplt; | |
7254 | else | |
7255 | s = htab->plt; | |
25dbc73a AM |
7256 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
7257 | break; | |
86bbe32f | 7258 | |
25dbc73a AM |
7259 | case DT_PLTRELSZ: |
7260 | dyn.d_un.d_val = htab->relplt->size; | |
7261 | break; | |
e1a9cb8e | 7262 | |
25dbc73a AM |
7263 | case DT_JMPREL: |
7264 | s = htab->relplt; | |
7265 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
7266 | break; | |
2f89ff8d | 7267 | |
1fe44d79 AM |
7268 | case DT_PPC_GOT: |
7269 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
7270 | break; |
7271 | ||
9d8504b1 PB |
7272 | case DT_RELASZ: |
7273 | if (htab->is_vxworks) | |
7274 | { | |
7275 | if (htab->relplt) | |
7276 | dyn.d_un.d_ptr -= htab->relplt->size; | |
7277 | break; | |
7278 | } | |
7279 | continue; | |
7280 | ||
25dbc73a AM |
7281 | default: |
7282 | continue; | |
7283 | } | |
4c45e5c9 | 7284 | |
25dbc73a AM |
7285 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7286 | } | |
7287 | } | |
4c45e5c9 | 7288 | |
25dbc73a AM |
7289 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
7290 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
3b36f7e6 | 7291 | if (htab->got != NULL) |
25dbc73a | 7292 | { |
3b36f7e6 AM |
7293 | unsigned char *p = htab->got->contents; |
7294 | bfd_vma val; | |
2f89ff8d | 7295 | |
636ce3f5 | 7296 | p += htab->elf.hgot->root.u.def.value; |
4a3dc543 | 7297 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 7298 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4); |
3b36f7e6 AM |
7299 | |
7300 | val = 0; | |
7301 | if (sdyn != NULL) | |
7302 | val = sdyn->output_section->vma + sdyn->output_offset; | |
7303 | bfd_put_32 (output_bfd, val, p); | |
25dbc73a AM |
7304 | |
7305 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
7306 | } | |
7307 | ||
9d8504b1 PB |
7308 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
7309 | if (splt && splt->size > 0) | |
7310 | { | |
7311 | /* Use the right PLT. */ | |
7312 | static const bfd_vma *plt_entry = NULL; | |
7313 | plt_entry = info->shared ? | |
7314 | ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry; | |
7315 | ||
7316 | if (!info->shared) | |
7317 | { | |
7318 | bfd_vma got_value = | |
636ce3f5 AM |
7319 | (htab->elf.hgot->root.u.def.section->output_section->vma |
7320 | + htab->elf.hgot->root.u.def.section->output_offset | |
7321 | + htab->elf.hgot->root.u.def.value); | |
9d8504b1 PB |
7322 | bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15); |
7323 | ||
7324 | bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff), | |
7325 | splt->contents + 0); | |
7326 | bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff), | |
7327 | splt->contents + 4); | |
7328 | } | |
7329 | else | |
7330 | { | |
7331 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
7332 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
7333 | } | |
7334 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
7335 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
7336 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
7337 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
7338 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
7339 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
7340 | ||
7341 | if (! info->shared) | |
7342 | { | |
7343 | Elf_Internal_Rela rela; | |
7344 | bfd_byte *loc; | |
7345 | ||
7346 | loc = htab->srelplt2->contents; | |
7347 | ||
7348 | /* Output the @ha relocation for the first instruction. */ | |
7349 | rela.r_offset = (htab->plt->output_section->vma | |
7350 | + htab->plt->output_offset | |
7351 | + 2); | |
636ce3f5 | 7352 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7353 | rela.r_addend = 0; |
7354 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7355 | loc += sizeof (Elf32_External_Rela); | |
7356 | ||
7357 | /* Output the @l relocation for the second instruction. */ | |
7358 | rela.r_offset = (htab->plt->output_section->vma | |
7359 | + htab->plt->output_offset | |
7360 | + 6); | |
636ce3f5 | 7361 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7362 | rela.r_addend = 0; |
7363 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
7364 | loc += sizeof (Elf32_External_Rela); | |
7365 | ||
7366 | /* Fix up the remaining relocations. They may have the wrong | |
7367 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
7368 | in which symbols were output. */ | |
7369 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
7370 | { | |
7371 | Elf_Internal_Rela rel; | |
7372 | ||
7373 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7374 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
7375 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7376 | loc += sizeof (Elf32_External_Rela); | |
7377 | ||
7378 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 7379 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
7380 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7381 | loc += sizeof (Elf32_External_Rela); | |
7382 | ||
7383 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 7384 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
7385 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
7386 | loc += sizeof (Elf32_External_Rela); | |
7387 | } | |
7388 | } | |
7389 | } | |
7390 | ||
d7128ce4 AM |
7391 | if (htab->glink != NULL && htab->glink->contents != NULL) |
7392 | { | |
7393 | unsigned char *p; | |
7394 | unsigned char *endp; | |
a6aa5195 | 7395 | bfd_vma res0; |
d7128ce4 | 7396 | unsigned int i; |
a6aa5195 AM |
7397 | |
7398 | /* | |
7399 | * PIC glink code is the following: | |
7400 | * | |
7401 | * # ith PLT code stub. | |
7402 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
7403 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
7404 | * mtctr 11 | |
7405 | * bctr | |
7406 | * | |
7407 | * # A table of branches, one for each plt entry. | |
7408 | * # The idea is that the plt call stub loads ctr (and r11) with these | |
7409 | * # addresses, so (r11 - res_0) gives the plt index * 4. | |
7410 | * res_0: b PLTresolve | |
7411 | * res_1: b PLTresolve | |
7412 | * . | |
7413 | * # Some number of entries towards the end can be nops | |
7414 | * res_n_m3: nop | |
7415 | * res_n_m2: nop | |
7416 | * res_n_m1: | |
7417 | * | |
7418 | * PLTresolve: | |
7419 | * addis 11,11,(1f-res_0)@ha | |
7420 | * mflr 0 | |
7421 | * bcl 20,31,1f | |
7422 | * 1: addi 11,11,(1b-res_0)@l | |
7423 | * mflr 12 | |
7424 | * mtlr 0 | |
7425 | * sub 11,11,12 # r11 = index * 4 | |
7426 | * addis 12,12,(got+4-1b)@ha | |
7427 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
7428 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
7429 | * mtctr 0 | |
7430 | * add 0,11,11 | |
7431 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
7432 | * bctr | |
7433 | */ | |
7434 | static const unsigned int pic_plt_resolve[] = | |
7435 | { | |
7436 | ADDIS_11_11, | |
7437 | MFLR_0, | |
7438 | BCL_20_31, | |
7439 | ADDI_11_11, | |
7440 | MFLR_12, | |
7441 | MTLR_0, | |
7442 | SUB_11_11_12, | |
7443 | ADDIS_12_12, | |
7444 | LWZ_0_12, | |
7445 | LWZ_12_12, | |
7446 | MTCTR_0, | |
7447 | ADD_0_11_11, | |
7448 | ADD_11_0_11, | |
7449 | BCTR, | |
7450 | NOP, | |
7451 | NOP | |
7452 | }; | |
7453 | ||
d7128ce4 AM |
7454 | static const unsigned int plt_resolve[] = |
7455 | { | |
a6aa5195 AM |
7456 | LIS_12, |
7457 | ADDIS_11_11, | |
7458 | LWZ_0_12, | |
7459 | ADDI_11_11, | |
d7128ce4 | 7460 | MTCTR_0, |
7e8aeb9a | 7461 | ADD_0_11_11, |
a6aa5195 | 7462 | LWZ_12_12, |
7e8aeb9a | 7463 | ADD_11_0_11, |
d7128ce4 AM |
7464 | BCTR, |
7465 | NOP, | |
7466 | NOP, | |
a6aa5195 AM |
7467 | NOP, |
7468 | NOP, | |
7469 | NOP, | |
7470 | NOP, | |
d7128ce4 AM |
7471 | NOP |
7472 | }; | |
7473 | ||
a6aa5195 AM |
7474 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
7475 | abort (); | |
7476 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
7477 | abort (); |
7478 | ||
a6aa5195 | 7479 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 7480 | and perhaps some padding. */ |
a6aa5195 AM |
7481 | p = htab->glink->contents; |
7482 | p += htab->glink_pltresolve; | |
86b9da88 AM |
7483 | endp = htab->glink->contents; |
7484 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
7485 | while (p < endp - 8 * 4) | |
7486 | { | |
7487 | bfd_put_32 (output_bfd, B + endp - p, p); | |
7488 | p += 4; | |
7489 | } | |
7490 | while (p < endp) | |
7491 | { | |
7492 | bfd_put_32 (output_bfd, NOP, p); | |
7493 | p += 4; | |
7494 | } | |
7495 | ||
7e8aeb9a | 7496 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
7497 | + htab->glink->output_section->vma |
7498 | + htab->glink->output_offset); | |
7499 | ||
7500 | /* Last comes the PLTresolve stub. */ | |
7e8aeb9a AM |
7501 | if (info->shared || info->pie) |
7502 | { | |
a6aa5195 | 7503 | bfd_vma bcl; |
d7128ce4 | 7504 | |
a6aa5195 | 7505 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 7506 | { |
a6aa5195 | 7507 | bfd_put_32 (output_bfd, pic_plt_resolve[i], p); |
7e8aeb9a AM |
7508 | p += 4; |
7509 | } | |
a6aa5195 AM |
7510 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
7511 | ||
7512 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
7513 | + htab->glink->output_section->vma | |
7514 | + htab->glink->output_offset); | |
7515 | ||
7516 | bfd_put_32 (output_bfd, | |
7517 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
7518 | bfd_put_32 (output_bfd, | |
7519 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
7520 | bfd_put_32 (output_bfd, | |
7521 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
7522 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
7523 | { | |
7524 | bfd_put_32 (output_bfd, | |
7525 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7526 | bfd_put_32 (output_bfd, | |
7527 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
7528 | } | |
7529 | else | |
7530 | { | |
7531 | bfd_put_32 (output_bfd, | |
7532 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
7533 | bfd_put_32 (output_bfd, | |
7534 | LWZ_12_12 + 4, p + 9*4); | |
7535 | } | |
7e8aeb9a AM |
7536 | } |
7537 | else | |
d7128ce4 | 7538 | { |
a6aa5195 | 7539 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a AM |
7540 | { |
7541 | bfd_put_32 (output_bfd, plt_resolve[i], p); | |
7542 | p += 4; | |
7543 | } | |
a6aa5195 AM |
7544 | p -= 4 * ARRAY_SIZE (plt_resolve); |
7545 | ||
7546 | bfd_put_32 (output_bfd, | |
7547 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
7548 | bfd_put_32 (output_bfd, | |
7549 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
7550 | bfd_put_32 (output_bfd, | |
7551 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
7552 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
7553 | { | |
7554 | bfd_put_32 (output_bfd, | |
7555 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
7556 | bfd_put_32 (output_bfd, | |
7557 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
7558 | } | |
7559 | else | |
7560 | { | |
7561 | bfd_put_32 (output_bfd, | |
7562 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
7563 | bfd_put_32 (output_bfd, | |
7564 | LWZ_12_12 + 4, p + 6*4); | |
7565 | } | |
d7128ce4 | 7566 | } |
d7128ce4 AM |
7567 | } |
7568 | ||
25dbc73a AM |
7569 | return TRUE; |
7570 | } | |
e1a9cb8e | 7571 | \f |
252b5132 RH |
7572 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
7573 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
7574 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
7575 | #define TARGET_BIG_NAME "elf32-powerpc" | |
7576 | #define ELF_ARCH bfd_arch_powerpc | |
7577 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
7578 | #ifdef __QNXTARGET__ |
7579 | #define ELF_MAXPAGESIZE 0x1000 | |
7580 | #else | |
252b5132 | 7581 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 7582 | #endif |
b1342370 | 7583 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 7584 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 RH |
7585 | #define elf_info_to_howto ppc_elf_info_to_howto |
7586 | ||
7587 | #ifdef EM_CYGNUS_POWERPC | |
7588 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
7589 | #endif | |
7590 | ||
7591 | #ifdef EM_PPC_OLD | |
7592 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
7593 | #endif | |
7594 | ||
7595 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 7596 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 7597 | #define elf_backend_can_refcount 1 |
b491616a | 7598 | #define elf_backend_rela_normal 1 |
252b5132 | 7599 | |
43c40ab2 | 7600 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 7601 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 7602 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 7603 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
157090f7 | 7604 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 7605 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 7606 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 7607 | |
feee612b | 7608 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
7609 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
7610 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
7611 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
7612 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
7613 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
7614 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 7615 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
7616 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
7617 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
7618 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
7619 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
7620 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
7621 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
7622 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
7623 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
7624 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 7625 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 7626 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
7627 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
7628 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
7629 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 7630 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 7631 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 7632 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 7633 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
7634 | |
7635 | #include "elf32-target.h" | |
9d8504b1 PB |
7636 | |
7637 | /* VxWorks Target */ | |
7638 | ||
7639 | #undef TARGET_LITTLE_SYM | |
7640 | #undef TARGET_LITTLE_NAME | |
7641 | ||
7642 | #undef TARGET_BIG_SYM | |
7643 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec | |
7644 | #undef TARGET_BIG_NAME | |
7645 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
7646 | ||
d5e3d971 PB |
7647 | /* VxWorks uses the elf default section flags for .plt. */ |
7648 | static const struct bfd_elf_special_section * | |
7649 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 7650 | { |
d5e3d971 PB |
7651 | if (sec->name == NULL) |
7652 | return NULL; | |
7653 | ||
7654 | if (strcmp (sec->name, ".plt") == 0) | |
7655 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
7656 | ||
7657 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
7658 | } | |
9d8504b1 PB |
7659 | |
7660 | /* Like ppc_elf_link_hash_table_create, but overrides | |
7661 | appropriately for VxWorks. */ | |
7662 | static struct bfd_link_hash_table * | |
7663 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
7664 | { | |
7665 | struct bfd_link_hash_table *ret; | |
7666 | ||
7667 | ret = ppc_elf_link_hash_table_create (abfd); | |
7668 | if (ret) | |
7669 | { | |
7670 | struct ppc_elf_link_hash_table *htab | |
7671 | = (struct ppc_elf_link_hash_table *)ret; | |
7672 | htab->is_vxworks = 1; | |
4a3dc543 | 7673 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
7674 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
7675 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
7676 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
7677 | } | |
7678 | return ret; | |
7679 | } | |
7680 | ||
7681 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
7682 | static bfd_boolean | |
7683 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
7684 | struct bfd_link_info *info, | |
7685 | Elf_Internal_Sym *sym, | |
7686 | const char **namep ATTRIBUTE_UNUSED, | |
7687 | flagword *flagsp ATTRIBUTE_UNUSED, | |
7688 | asection **secp, | |
7689 | bfd_vma *valp) | |
7690 | { | |
7691 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
7692 | valp)) | |
7693 | return FALSE; | |
7694 | ||
7695 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
7696 | } | |
7697 | ||
9d8504b1 PB |
7698 | static void |
7699 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
7700 | { | |
7701 | ppc_elf_final_write_processing(abfd, linker); | |
7702 | elf_vxworks_final_write_processing(abfd, linker); | |
7703 | } | |
7704 | ||
7705 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
7706 | define it. */ | |
7707 | #undef elf_backend_want_plt_sym | |
7708 | #define elf_backend_want_plt_sym 1 | |
7709 | #undef elf_backend_want_got_plt | |
7710 | #define elf_backend_want_got_plt 1 | |
7711 | #undef elf_backend_got_symbol_offset | |
7712 | #define elf_backend_got_symbol_offset 0 | |
7713 | #undef elf_backend_plt_not_loaded | |
7714 | #define elf_backend_plt_not_loaded 0 | |
7715 | #undef elf_backend_plt_readonly | |
7716 | #define elf_backend_plt_readonly 1 | |
7717 | #undef elf_backend_got_header_size | |
7718 | #define elf_backend_got_header_size 12 | |
7719 | ||
7720 | #undef bfd_elf32_bfd_link_hash_table_create | |
7721 | #define bfd_elf32_bfd_link_hash_table_create \ | |
7722 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
7723 | #undef elf_backend_add_symbol_hook |
7724 | #define elf_backend_add_symbol_hook \ | |
7725 | ppc_elf_vxworks_add_symbol_hook | |
7726 | #undef elf_backend_link_output_symbol_hook | |
7727 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 7728 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
7729 | #undef elf_backend_final_write_processing |
7730 | #define elf_backend_final_write_processing \ | |
7731 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
7732 | #undef elf_backend_get_sec_type_attr |
7733 | #define elf_backend_get_sec_type_attr \ | |
7734 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
7735 | #undef elf_backend_emit_relocs |
7736 | #define elf_backend_emit_relocs \ | |
7737 | elf_vxworks_emit_relocs | |
7738 | ||
7739 | #undef elf32_bed | |
7740 | #define elf32_bed ppc_elf_vxworks_bed | |
7741 | ||
7742 | #include "elf32-target.h" |