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, |
3a71aa26 | 3 | 2004, 2005, 2006, 2007, 2008, 2009 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 | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 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 | 22 | |
cd123cb7 | 23 | |
252b5132 RH |
24 | /* This file is based on a preliminary PowerPC ELF ABI. The |
25 | information may not match the final PowerPC ELF ABI. It includes | |
26 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
27 | information may also not match. */ | |
28 | ||
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
252b5132 | 31 | #include "bfd.h" |
252b5132 RH |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
35 | #include "elf/ppc.h" | |
7619e7c7 | 36 | #include "elf32-ppc.h" |
9d8504b1 | 37 | #include "elf-vxworks.h" |
252b5132 | 38 | |
f0fe0e16 | 39 | /* RELA relocations are used here. */ |
252b5132 | 40 | |
252b5132 | 41 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 43 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 45 | |
70bccea4 AM |
46 | /* Branch prediction bit for branch taken relocs. */ |
47 | #define BRANCH_PREDICT_BIT 0x200000 | |
48 | /* Mask to set RA in memory instructions. */ | |
49 | #define RA_REGISTER_MASK 0x001f0000 | |
50 | /* Value to shift register by to insert RA. */ | |
51 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
52 | |
53 | /* The name of the dynamic interpreter. This is put in the .interp | |
54 | section. */ | |
252b5132 RH |
55 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
56 | ||
d7128ce4 | 57 | /* For old-style PLT. */ |
252b5132 RH |
58 | /* The number of single-slot PLT entries (the rest use two slots). */ |
59 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
60 | ||
d7128ce4 | 61 | /* For new-style .glink and .plt. */ |
a6aa5195 | 62 | #define GLINK_PLTRESOLVE 16*4 |
d7128ce4 | 63 | #define GLINK_ENTRY_SIZE 4*4 |
a7f2871e | 64 | #define TLS_GET_ADDR_GLINK_SIZE 12*4 |
d7128ce4 | 65 | |
9d8504b1 PB |
66 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
67 | ||
68 | /* The standard VxWorks PLT entry. */ | |
69 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
70 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
71 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
72 | { | |
73 | 0x3d800000, /* lis r12,0 */ | |
74 | 0x818c0000, /* lwz r12,0(r12) */ | |
75 | 0x7d8903a6, /* mtctr r12 */ | |
76 | 0x4e800420, /* bctr */ | |
77 | 0x39600000, /* li r11,0 */ | |
78 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
79 | 0x60000000, /* nop */ | |
80 | 0x60000000, /* nop */ | |
81 | }; | |
82 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
83 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
84 | { | |
85 | 0x3d9e0000, /* addis r12,r30,0 */ | |
86 | 0x818c0000, /* lwz r12,0(r12) */ | |
87 | 0x7d8903a6, /* mtctr r12 */ | |
88 | 0x4e800420, /* bctr */ | |
89 | 0x39600000, /* li r11,0 */ | |
90 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
91 | 0x60000000, /* nop */ | |
92 | 0x60000000, /* nop */ | |
93 | }; | |
94 | ||
95 | /* The initial VxWorks PLT entry. */ | |
96 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
97 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
98 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
99 | { | |
100 | 0x3d800000, /* lis r12,0 */ | |
101 | 0x398c0000, /* addi r12,r12,0 */ | |
102 | 0x800c0008, /* lwz r0,8(r12) */ | |
103 | 0x7c0903a6, /* mtctr r0 */ | |
104 | 0x818c0004, /* lwz r12,4(r12) */ | |
105 | 0x4e800420, /* bctr */ | |
106 | 0x60000000, /* nop */ | |
107 | 0x60000000, /* nop */ | |
108 | }; | |
109 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
110 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
111 | { | |
112 | 0x819e0008, /* lwz r12,8(r30) */ | |
113 | 0x7d8903a6, /* mtctr r12 */ | |
114 | 0x819e0004, /* lwz r12,4(r30) */ | |
115 | 0x4e800420, /* bctr */ | |
116 | 0x60000000, /* nop */ | |
117 | 0x60000000, /* nop */ | |
118 | 0x60000000, /* nop */ | |
119 | 0x60000000, /* nop */ | |
120 | }; | |
121 | ||
122 | /* For executables, we have some additional relocations in | |
123 | .rela.plt.unloaded, for the kernel loader. */ | |
124 | ||
125 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
126 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
127 | /* The number of relocations in the PLTResolve slot. */ | |
128 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
129 | /* The number of relocations in the PLTResolve slot when when creating | |
130 | a shared library. */ | |
131 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
132 | ||
d7128ce4 | 133 | /* Some instructions. */ |
d7128ce4 | 134 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
135 | #define ADDIS_11_30 0x3d7e0000 |
136 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 137 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 138 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 139 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 140 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 AM |
141 | #define B 0x48000000 |
142 | #define BCL_20_31 0x429f0005 | |
d7128ce4 | 143 | #define BCTR 0x4e800420 |
a7f2871e AM |
144 | #define BEQLR 0x4d820020 |
145 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
146 | #define LIS_11 0x3d600000 |
147 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
148 | #define LWZU_0_12 0x840c0000 |
149 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 150 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
151 | #define LWZ_11_11 0x816b0000 |
152 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 153 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 154 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
155 | #define MR_0_3 0x7c601b78 |
156 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
157 | #define MFLR_0 0x7c0802a6 |
158 | #define MFLR_12 0x7d8802a6 | |
159 | #define MTCTR_0 0x7c0903a6 | |
160 | #define MTCTR_11 0x7d6903a6 | |
161 | #define MTLR_0 0x7c0803a6 | |
162 | #define NOP 0x60000000 | |
163 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
164 | |
165 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
166 | #define TP_OFFSET 0x7000 | |
167 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
168 | |
169 | /* The value of a defined global symbol. */ | |
170 | #define SYM_VAL(SYM) \ | |
171 | ((SYM)->root.u.def.section->output_section->vma \ | |
172 | + (SYM)->root.u.def.section->output_offset \ | |
173 | + (SYM)->root.u.def.value) | |
7fce784e | 174 | \f |
e47cd125 | 175 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 176 | |
8da6118f | 177 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
178 | /* This reloc does nothing. */ |
179 | HOWTO (R_PPC_NONE, /* 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_NONE", /* name */ | |
b34976b6 | 188 | FALSE, /* partial_inplace */ |
252b5132 RH |
189 | 0, /* src_mask */ |
190 | 0, /* dst_mask */ | |
b34976b6 | 191 | FALSE), /* pcrel_offset */ |
252b5132 RH |
192 | |
193 | /* A standard 32 bit relocation. */ | |
194 | HOWTO (R_PPC_ADDR32, /* type */ | |
195 | 0, /* rightshift */ | |
196 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
197 | 32, /* bitsize */ | |
b34976b6 | 198 | FALSE, /* pc_relative */ |
252b5132 RH |
199 | 0, /* bitpos */ |
200 | complain_overflow_bitfield, /* complain_on_overflow */ | |
201 | bfd_elf_generic_reloc, /* special_function */ | |
202 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 203 | FALSE, /* partial_inplace */ |
252b5132 RH |
204 | 0, /* src_mask */ |
205 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 206 | FALSE), /* pcrel_offset */ |
252b5132 RH |
207 | |
208 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
209 | FIXME: we don't check that, we just clear them. */ | |
210 | HOWTO (R_PPC_ADDR24, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 26, /* 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_ADDR24", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
252b5132 RH |
220 | 0, /* src_mask */ |
221 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
252b5132 RH |
223 | |
224 | /* A standard 16 bit relocation. */ | |
225 | HOWTO (R_PPC_ADDR16, /* 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_bitfield, /* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_PPC_ADDR16", /* 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 | /* A 16 bit relocation without overflow. */ | |
240 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
241 | 0, /* 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_LO", /* 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. */ | |
255 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
256 | 16, /* rightshift */ | |
257 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 16, /* bitsize */ | |
b34976b6 | 259 | FALSE, /* pc_relative */ |
252b5132 RH |
260 | 0, /* bitpos */ |
261 | complain_overflow_dont, /* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* special_function */ | |
263 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 264 | FALSE, /* partial_inplace */ |
252b5132 RH |
265 | 0, /* src_mask */ |
266 | 0xffff, /* dst_mask */ | |
b34976b6 | 267 | FALSE), /* pcrel_offset */ |
252b5132 RH |
268 | |
269 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 270 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
271 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
272 | 16, /* rightshift */ | |
273 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
274 | 16, /* bitsize */ | |
b34976b6 | 275 | FALSE, /* pc_relative */ |
252b5132 RH |
276 | 0, /* bitpos */ |
277 | complain_overflow_dont, /* complain_on_overflow */ | |
278 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
279 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 280 | FALSE, /* partial_inplace */ |
252b5132 RH |
281 | 0, /* src_mask */ |
282 | 0xffff, /* dst_mask */ | |
b34976b6 | 283 | FALSE), /* pcrel_offset */ |
252b5132 RH |
284 | |
285 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
286 | FIXME: we don't check that, we just clear them. */ | |
287 | HOWTO (R_PPC_ADDR14, /* type */ | |
288 | 0, /* rightshift */ | |
289 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
290 | 16, /* bitsize */ | |
b34976b6 | 291 | FALSE, /* pc_relative */ |
252b5132 RH |
292 | 0, /* bitpos */ |
293 | complain_overflow_bitfield, /* complain_on_overflow */ | |
294 | bfd_elf_generic_reloc, /* special_function */ | |
295 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 296 | FALSE, /* partial_inplace */ |
252b5132 RH |
297 | 0, /* src_mask */ |
298 | 0xfffc, /* dst_mask */ | |
b34976b6 | 299 | FALSE), /* pcrel_offset */ |
252b5132 RH |
300 | |
301 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
302 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 303 | bits must be zero. */ |
252b5132 RH |
304 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
305 | 0, /* rightshift */ | |
306 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
307 | 16, /* bitsize */ | |
b34976b6 | 308 | FALSE, /* pc_relative */ |
252b5132 RH |
309 | 0, /* bitpos */ |
310 | complain_overflow_bitfield, /* complain_on_overflow */ | |
311 | bfd_elf_generic_reloc, /* special_function */ | |
312 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 313 | FALSE, /* partial_inplace */ |
252b5132 RH |
314 | 0, /* src_mask */ |
315 | 0xfffc, /* dst_mask */ | |
b34976b6 | 316 | FALSE), /* pcrel_offset */ |
252b5132 RH |
317 | |
318 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
319 | indicate that the branch is not expected to be taken. The lower | |
320 | two bits must be zero. */ | |
321 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
322 | 0, /* rightshift */ | |
323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
324 | 16, /* bitsize */ | |
b34976b6 | 325 | FALSE, /* pc_relative */ |
252b5132 RH |
326 | 0, /* bitpos */ |
327 | complain_overflow_bitfield, /* complain_on_overflow */ | |
328 | bfd_elf_generic_reloc, /* special_function */ | |
329 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 330 | FALSE, /* partial_inplace */ |
252b5132 RH |
331 | 0, /* src_mask */ |
332 | 0xfffc, /* dst_mask */ | |
b34976b6 | 333 | FALSE), /* pcrel_offset */ |
252b5132 | 334 | |
8da6118f | 335 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
336 | HOWTO (R_PPC_REL24, /* type */ |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 26, /* 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_REL24", /* name */ | |
b34976b6 | 345 | FALSE, /* partial_inplace */ |
252b5132 RH |
346 | 0, /* src_mask */ |
347 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 348 | TRUE), /* pcrel_offset */ |
252b5132 | 349 | |
8da6118f | 350 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
351 | HOWTO (R_PPC_REL14, /* type */ |
352 | 0, /* rightshift */ | |
353 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
354 | 16, /* bitsize */ | |
b34976b6 | 355 | TRUE, /* pc_relative */ |
252b5132 RH |
356 | 0, /* bitpos */ |
357 | complain_overflow_signed, /* complain_on_overflow */ | |
358 | bfd_elf_generic_reloc, /* special_function */ | |
359 | "R_PPC_REL14", /* name */ | |
b34976b6 | 360 | FALSE, /* partial_inplace */ |
252b5132 RH |
361 | 0, /* src_mask */ |
362 | 0xfffc, /* dst_mask */ | |
b34976b6 | 363 | TRUE), /* pcrel_offset */ |
252b5132 | 364 | |
8da6118f | 365 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
366 | the branch is expected to be taken. The lower two bits must be |
367 | zero. */ | |
368 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 16, /* bitsize */ | |
b34976b6 | 372 | TRUE, /* pc_relative */ |
252b5132 RH |
373 | 0, /* bitpos */ |
374 | complain_overflow_signed, /* complain_on_overflow */ | |
375 | bfd_elf_generic_reloc, /* special_function */ | |
376 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 377 | FALSE, /* partial_inplace */ |
252b5132 RH |
378 | 0, /* src_mask */ |
379 | 0xfffc, /* dst_mask */ | |
b34976b6 | 380 | TRUE), /* pcrel_offset */ |
252b5132 | 381 | |
8da6118f | 382 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
383 | the branch is not expected to be taken. The lower two bits must |
384 | be zero. */ | |
385 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
386 | 0, /* rightshift */ | |
387 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 16, /* bitsize */ | |
b34976b6 | 389 | TRUE, /* pc_relative */ |
252b5132 RH |
390 | 0, /* bitpos */ |
391 | complain_overflow_signed, /* complain_on_overflow */ | |
392 | bfd_elf_generic_reloc, /* special_function */ | |
393 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 394 | FALSE, /* partial_inplace */ |
252b5132 RH |
395 | 0, /* src_mask */ |
396 | 0xfffc, /* dst_mask */ | |
b34976b6 | 397 | TRUE), /* pcrel_offset */ |
252b5132 RH |
398 | |
399 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
400 | symbol. */ | |
401 | HOWTO (R_PPC_GOT16, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
252b5132 RH |
406 | 0, /* bitpos */ |
407 | complain_overflow_signed, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
252b5132 RH |
411 | 0, /* src_mask */ |
412 | 0xffff, /* dst_mask */ | |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
252b5132 RH |
414 | |
415 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
416 | the symbol. */ | |
417 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
418 | 0, /* rightshift */ | |
419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 16, /* bitsize */ | |
b34976b6 | 421 | FALSE, /* pc_relative */ |
252b5132 RH |
422 | 0, /* bitpos */ |
423 | complain_overflow_dont, /* complain_on_overflow */ | |
424 | bfd_elf_generic_reloc, /* special_function */ | |
425 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 426 | FALSE, /* partial_inplace */ |
252b5132 RH |
427 | 0, /* src_mask */ |
428 | 0xffff, /* dst_mask */ | |
b34976b6 | 429 | FALSE), /* pcrel_offset */ |
252b5132 RH |
430 | |
431 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
432 | the symbol. */ | |
433 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
434 | 16, /* rightshift */ | |
435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 16, /* bitsize */ | |
b34976b6 | 437 | FALSE, /* pc_relative */ |
252b5132 RH |
438 | 0, /* bitpos */ |
439 | complain_overflow_bitfield, /* complain_on_overflow */ | |
440 | bfd_elf_generic_reloc, /* special_function */ | |
441 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
252b5132 RH |
443 | 0, /* src_mask */ |
444 | 0xffff, /* dst_mask */ | |
b34976b6 | 445 | FALSE), /* pcrel_offset */ |
252b5132 RH |
446 | |
447 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
448 | the symbol. */ | |
449 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
450 | 16, /* rightshift */ | |
451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 16, /* bitsize */ | |
b34976b6 | 453 | FALSE, /* pc_relative */ |
252b5132 RH |
454 | 0, /* bitpos */ |
455 | complain_overflow_bitfield, /* complain_on_overflow */ | |
456 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
457 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 458 | FALSE, /* partial_inplace */ |
252b5132 RH |
459 | 0, /* src_mask */ |
460 | 0xffff, /* dst_mask */ | |
b34976b6 | 461 | FALSE), /* pcrel_offset */ |
252b5132 RH |
462 | |
463 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
464 | entry for the symbol. */ | |
465 | HOWTO (R_PPC_PLTREL24, /* type */ | |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 26, /* bitsize */ | |
b34976b6 | 469 | TRUE, /* pc_relative */ |
252b5132 RH |
470 | 0, /* bitpos */ |
471 | complain_overflow_signed, /* complain_on_overflow */ | |
472 | bfd_elf_generic_reloc, /* special_function */ | |
473 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
252b5132 RH |
475 | 0, /* src_mask */ |
476 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 477 | TRUE), /* pcrel_offset */ |
252b5132 RH |
478 | |
479 | /* This is used only by the dynamic linker. The symbol should exist | |
480 | both in the object being run and in some shared library. The | |
481 | dynamic linker copies the data addressed by the symbol from the | |
482 | shared library into the object, because the object being | |
483 | run has to have the data at some particular address. */ | |
484 | HOWTO (R_PPC_COPY, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 32, /* bitsize */ | |
b34976b6 | 488 | FALSE, /* pc_relative */ |
252b5132 RH |
489 | 0, /* bitpos */ |
490 | complain_overflow_bitfield, /* complain_on_overflow */ | |
491 | bfd_elf_generic_reloc, /* special_function */ | |
492 | "R_PPC_COPY", /* name */ | |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
252b5132 RH |
494 | 0, /* src_mask */ |
495 | 0, /* dst_mask */ | |
b34976b6 | 496 | FALSE), /* pcrel_offset */ |
252b5132 RH |
497 | |
498 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
499 | entries. */ | |
500 | HOWTO (R_PPC_GLOB_DAT, /* 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_GLOB_DAT", /* name */ | |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
252b5132 RH |
510 | 0, /* src_mask */ |
511 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
252b5132 RH |
513 | |
514 | /* Marks a procedure linkage table entry for a symbol. */ | |
515 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
516 | 0, /* rightshift */ | |
517 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
518 | 32, /* bitsize */ | |
b34976b6 | 519 | FALSE, /* pc_relative */ |
252b5132 RH |
520 | 0, /* bitpos */ |
521 | complain_overflow_bitfield, /* complain_on_overflow */ | |
522 | bfd_elf_generic_reloc, /* special_function */ | |
523 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 524 | FALSE, /* partial_inplace */ |
252b5132 RH |
525 | 0, /* src_mask */ |
526 | 0, /* dst_mask */ | |
b34976b6 | 527 | FALSE), /* pcrel_offset */ |
252b5132 RH |
528 | |
529 | /* Used only by the dynamic linker. When the object is run, this | |
530 | longword is set to the load address of the object, plus the | |
531 | addend. */ | |
532 | HOWTO (R_PPC_RELATIVE, /* type */ | |
533 | 0, /* rightshift */ | |
534 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 32, /* bitsize */ | |
b34976b6 | 536 | FALSE, /* pc_relative */ |
252b5132 RH |
537 | 0, /* bitpos */ |
538 | complain_overflow_bitfield, /* complain_on_overflow */ | |
539 | bfd_elf_generic_reloc, /* special_function */ | |
540 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 541 | FALSE, /* partial_inplace */ |
252b5132 RH |
542 | 0, /* src_mask */ |
543 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 544 | FALSE), /* pcrel_offset */ |
252b5132 RH |
545 | |
546 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
547 | object rather than the final value. Normally used for | |
548 | _GLOBAL_OFFSET_TABLE_. */ | |
549 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 26, /* bitsize */ | |
b34976b6 | 553 | TRUE, /* pc_relative */ |
252b5132 RH |
554 | 0, /* bitpos */ |
555 | complain_overflow_signed, /* complain_on_overflow */ | |
556 | bfd_elf_generic_reloc, /* special_function */ | |
557 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 558 | FALSE, /* partial_inplace */ |
252b5132 RH |
559 | 0, /* src_mask */ |
560 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 561 | TRUE), /* pcrel_offset */ |
252b5132 RH |
562 | |
563 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
564 | HOWTO (R_PPC_UADDR32, /* type */ | |
565 | 0, /* rightshift */ | |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 32, /* 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_UADDR32", /* name */ | |
b34976b6 | 573 | FALSE, /* partial_inplace */ |
252b5132 RH |
574 | 0, /* src_mask */ |
575 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 576 | FALSE), /* pcrel_offset */ |
252b5132 RH |
577 | |
578 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
579 | HOWTO (R_PPC_UADDR16, /* type */ | |
580 | 0, /* rightshift */ | |
581 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 16, /* bitsize */ | |
b34976b6 | 583 | FALSE, /* pc_relative */ |
252b5132 RH |
584 | 0, /* bitpos */ |
585 | complain_overflow_bitfield, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
587 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 588 | FALSE, /* partial_inplace */ |
252b5132 RH |
589 | 0, /* src_mask */ |
590 | 0xffff, /* dst_mask */ | |
b34976b6 | 591 | FALSE), /* pcrel_offset */ |
252b5132 RH |
592 | |
593 | /* 32-bit PC relative */ | |
594 | HOWTO (R_PPC_REL32, /* type */ | |
595 | 0, /* rightshift */ | |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 32, /* bitsize */ | |
b34976b6 | 598 | TRUE, /* pc_relative */ |
252b5132 RH |
599 | 0, /* bitpos */ |
600 | complain_overflow_bitfield, /* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
602 | "R_PPC_REL32", /* name */ | |
b34976b6 | 603 | FALSE, /* partial_inplace */ |
252b5132 RH |
604 | 0, /* src_mask */ |
605 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 606 | TRUE), /* pcrel_offset */ |
252b5132 RH |
607 | |
608 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 609 | FIXME: not supported. */ |
252b5132 RH |
610 | HOWTO (R_PPC_PLT32, /* type */ |
611 | 0, /* rightshift */ | |
612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
613 | 32, /* bitsize */ | |
b34976b6 | 614 | FALSE, /* pc_relative */ |
252b5132 RH |
615 | 0, /* bitpos */ |
616 | complain_overflow_bitfield, /* complain_on_overflow */ | |
617 | bfd_elf_generic_reloc, /* special_function */ | |
618 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 619 | FALSE, /* partial_inplace */ |
252b5132 RH |
620 | 0, /* src_mask */ |
621 | 0, /* dst_mask */ | |
b34976b6 | 622 | FALSE), /* pcrel_offset */ |
252b5132 RH |
623 | |
624 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 625 | FIXME: not supported. */ |
252b5132 RH |
626 | HOWTO (R_PPC_PLTREL32, /* type */ |
627 | 0, /* rightshift */ | |
628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
629 | 32, /* bitsize */ | |
b34976b6 | 630 | TRUE, /* pc_relative */ |
252b5132 RH |
631 | 0, /* bitpos */ |
632 | complain_overflow_bitfield, /* complain_on_overflow */ | |
633 | bfd_elf_generic_reloc, /* special_function */ | |
634 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 635 | FALSE, /* partial_inplace */ |
252b5132 RH |
636 | 0, /* src_mask */ |
637 | 0, /* dst_mask */ | |
b34976b6 | 638 | TRUE), /* pcrel_offset */ |
252b5132 RH |
639 | |
640 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
641 | the symbol. */ | |
642 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
643 | 0, /* rightshift */ | |
644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 16, /* bitsize */ | |
b34976b6 | 646 | FALSE, /* pc_relative */ |
252b5132 RH |
647 | 0, /* bitpos */ |
648 | complain_overflow_dont, /* complain_on_overflow */ | |
649 | bfd_elf_generic_reloc, /* special_function */ | |
650 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
252b5132 RH |
652 | 0, /* src_mask */ |
653 | 0xffff, /* dst_mask */ | |
b34976b6 | 654 | FALSE), /* pcrel_offset */ |
252b5132 RH |
655 | |
656 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
657 | the symbol. */ | |
658 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
659 | 16, /* rightshift */ | |
660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
661 | 16, /* bitsize */ | |
b34976b6 | 662 | FALSE, /* pc_relative */ |
252b5132 RH |
663 | 0, /* bitpos */ |
664 | complain_overflow_bitfield, /* complain_on_overflow */ | |
665 | bfd_elf_generic_reloc, /* special_function */ | |
666 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 667 | FALSE, /* partial_inplace */ |
252b5132 RH |
668 | 0, /* src_mask */ |
669 | 0xffff, /* dst_mask */ | |
b34976b6 | 670 | FALSE), /* pcrel_offset */ |
252b5132 RH |
671 | |
672 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
673 | the symbol. */ | |
674 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
675 | 16, /* rightshift */ | |
676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 16, /* bitsize */ | |
b34976b6 | 678 | FALSE, /* pc_relative */ |
252b5132 RH |
679 | 0, /* bitpos */ |
680 | complain_overflow_bitfield, /* complain_on_overflow */ | |
681 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
682 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 683 | FALSE, /* partial_inplace */ |
252b5132 RH |
684 | 0, /* src_mask */ |
685 | 0xffff, /* dst_mask */ | |
b34976b6 | 686 | FALSE), /* pcrel_offset */ |
252b5132 RH |
687 | |
688 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
689 | small data items. */ | |
690 | HOWTO (R_PPC_SDAREL16, /* type */ | |
691 | 0, /* rightshift */ | |
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_signed, /* complain_on_overflow */ | |
697 | bfd_elf_generic_reloc, /* special_function */ | |
698 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
252b5132 RH |
700 | 0, /* src_mask */ |
701 | 0xffff, /* dst_mask */ | |
b34976b6 | 702 | FALSE), /* pcrel_offset */ |
252b5132 | 703 | |
c061c2d8 | 704 | /* 16-bit section relative relocation. */ |
252b5132 RH |
705 | HOWTO (R_PPC_SECTOFF, /* type */ |
706 | 0, /* rightshift */ | |
c061c2d8 AM |
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_bitfield, /* complain_on_overflow */ | |
712 | bfd_elf_generic_reloc, /* special_function */ | |
713 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
252b5132 | 715 | 0, /* src_mask */ |
c061c2d8 | 716 | 0xffff, /* dst_mask */ |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
252b5132 | 718 | |
c3668558 | 719 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
720 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
721 | 0, /* 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_dont, /* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | "R_PPC_SECTOFF_LO", /* 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 section relative relocation. */ |
252b5132 RH |
735 | HOWTO (R_PPC_SECTOFF_HI, /* 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 | bfd_elf_generic_reloc, /* special_function */ | |
743 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 744 | FALSE, /* partial_inplace */ |
252b5132 RH |
745 | 0, /* src_mask */ |
746 | 0xffff, /* dst_mask */ | |
b34976b6 | 747 | FALSE), /* pcrel_offset */ |
252b5132 | 748 | |
c3668558 | 749 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
750 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
751 | 16, /* rightshift */ | |
752 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 16, /* bitsize */ | |
b34976b6 | 754 | FALSE, /* pc_relative */ |
252b5132 RH |
755 | 0, /* bitpos */ |
756 | complain_overflow_bitfield, /* complain_on_overflow */ | |
757 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
758 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 759 | FALSE, /* partial_inplace */ |
252b5132 RH |
760 | 0, /* src_mask */ |
761 | 0xffff, /* dst_mask */ | |
b34976b6 | 762 | FALSE), /* pcrel_offset */ |
252b5132 | 763 | |
727fc41e | 764 | /* Marker relocs for TLS. */ |
7619e7c7 | 765 | HOWTO (R_PPC_TLS, |
252b5132 RH |
766 | 0, /* rightshift */ |
767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 32, /* bitsize */ | |
b34976b6 | 769 | FALSE, /* pc_relative */ |
252b5132 | 770 | 0, /* bitpos */ |
7619e7c7 | 771 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 772 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
773 | "R_PPC_TLS", /* name */ |
774 | FALSE, /* partial_inplace */ | |
775 | 0, /* src_mask */ | |
776 | 0, /* dst_mask */ | |
777 | FALSE), /* pcrel_offset */ | |
778 | ||
727fc41e AM |
779 | HOWTO (R_PPC_TLSGD, |
780 | 0, /* rightshift */ | |
781 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
782 | 32, /* bitsize */ | |
783 | FALSE, /* pc_relative */ | |
784 | 0, /* bitpos */ | |
785 | complain_overflow_dont, /* complain_on_overflow */ | |
786 | bfd_elf_generic_reloc, /* special_function */ | |
787 | "R_PPC_TLSGD", /* name */ | |
788 | FALSE, /* partial_inplace */ | |
789 | 0, /* src_mask */ | |
790 | 0, /* dst_mask */ | |
791 | FALSE), /* pcrel_offset */ | |
792 | ||
793 | HOWTO (R_PPC_TLSLD, | |
794 | 0, /* rightshift */ | |
795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 32, /* bitsize */ | |
797 | FALSE, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_dont, /* complain_on_overflow */ | |
800 | bfd_elf_generic_reloc, /* special_function */ | |
801 | "R_PPC_TLSLD", /* name */ | |
802 | FALSE, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0, /* dst_mask */ | |
805 | FALSE), /* pcrel_offset */ | |
806 | ||
7619e7c7 AM |
807 | /* Computes the load module index of the load module that contains the |
808 | definition of its TLS sym. */ | |
809 | HOWTO (R_PPC_DTPMOD32, | |
810 | 0, /* rightshift */ | |
811 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
812 | 32, /* bitsize */ | |
813 | FALSE, /* pc_relative */ | |
814 | 0, /* bitpos */ | |
815 | complain_overflow_dont, /* complain_on_overflow */ | |
816 | ppc_elf_unhandled_reloc, /* special_function */ | |
817 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 818 | FALSE, /* partial_inplace */ |
252b5132 RH |
819 | 0, /* src_mask */ |
820 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 821 | FALSE), /* pcrel_offset */ |
252b5132 | 822 | |
7619e7c7 AM |
823 | /* Computes a dtv-relative displacement, the difference between the value |
824 | of sym+add and the base address of the thread-local storage block that | |
825 | contains the definition of sym, minus 0x8000. */ | |
826 | HOWTO (R_PPC_DTPREL32, | |
827 | 0, /* rightshift */ | |
828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
829 | 32, /* bitsize */ | |
830 | FALSE, /* pc_relative */ | |
831 | 0, /* bitpos */ | |
832 | complain_overflow_dont, /* complain_on_overflow */ | |
833 | ppc_elf_unhandled_reloc, /* special_function */ | |
834 | "R_PPC_DTPREL32", /* name */ | |
835 | FALSE, /* partial_inplace */ | |
836 | 0, /* src_mask */ | |
837 | 0xffffffff, /* dst_mask */ | |
838 | FALSE), /* pcrel_offset */ | |
839 | ||
840 | /* A 16 bit dtprel reloc. */ | |
841 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
842 | 0, /* rightshift */ |
843 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
844 | 16, /* bitsize */ | |
b34976b6 | 845 | FALSE, /* pc_relative */ |
252b5132 | 846 | 0, /* bitpos */ |
7619e7c7 AM |
847 | complain_overflow_signed, /* complain_on_overflow */ |
848 | ppc_elf_unhandled_reloc, /* special_function */ | |
849 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 850 | FALSE, /* partial_inplace */ |
252b5132 RH |
851 | 0, /* src_mask */ |
852 | 0xffff, /* dst_mask */ | |
b34976b6 | 853 | FALSE), /* pcrel_offset */ |
252b5132 | 854 | |
7619e7c7 AM |
855 | /* Like DTPREL16, but no overflow. */ |
856 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
857 | 0, /* rightshift */ |
858 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
859 | 16, /* bitsize */ | |
b34976b6 | 860 | FALSE, /* pc_relative */ |
252b5132 | 861 | 0, /* bitpos */ |
7619e7c7 AM |
862 | complain_overflow_dont, /* complain_on_overflow */ |
863 | ppc_elf_unhandled_reloc, /* special_function */ | |
864 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 865 | FALSE, /* partial_inplace */ |
252b5132 RH |
866 | 0, /* src_mask */ |
867 | 0xffff, /* dst_mask */ | |
b34976b6 | 868 | FALSE), /* pcrel_offset */ |
252b5132 | 869 | |
7619e7c7 AM |
870 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
871 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
872 | 16, /* rightshift */ |
873 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
874 | 16, /* bitsize */ | |
b34976b6 | 875 | FALSE, /* pc_relative */ |
252b5132 RH |
876 | 0, /* bitpos */ |
877 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
878 | ppc_elf_unhandled_reloc, /* special_function */ |
879 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 880 | FALSE, /* partial_inplace */ |
252b5132 RH |
881 | 0, /* src_mask */ |
882 | 0xffff, /* dst_mask */ | |
b34976b6 | 883 | FALSE), /* pcrel_offset */ |
252b5132 | 884 | |
7619e7c7 AM |
885 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
886 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
887 | 16, /* rightshift */ |
888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
889 | 16, /* bitsize */ | |
b34976b6 | 890 | FALSE, /* pc_relative */ |
252b5132 RH |
891 | 0, /* bitpos */ |
892 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
893 | ppc_elf_unhandled_reloc, /* special_function */ |
894 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 895 | FALSE, /* partial_inplace */ |
252b5132 RH |
896 | 0, /* src_mask */ |
897 | 0xffff, /* dst_mask */ | |
b34976b6 | 898 | FALSE), /* pcrel_offset */ |
252b5132 | 899 | |
7619e7c7 AM |
900 | /* Computes a tp-relative displacement, the difference between the value of |
901 | sym+add and the value of the thread pointer (r13). */ | |
902 | HOWTO (R_PPC_TPREL32, | |
903 | 0, /* rightshift */ | |
904 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 32, /* bitsize */ | |
906 | FALSE, /* pc_relative */ | |
907 | 0, /* bitpos */ | |
908 | complain_overflow_dont, /* complain_on_overflow */ | |
909 | ppc_elf_unhandled_reloc, /* special_function */ | |
910 | "R_PPC_TPREL32", /* name */ | |
911 | FALSE, /* partial_inplace */ | |
912 | 0, /* src_mask */ | |
913 | 0xffffffff, /* dst_mask */ | |
914 | FALSE), /* pcrel_offset */ | |
915 | ||
916 | /* A 16 bit tprel reloc. */ | |
917 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
918 | 0, /* rightshift */ |
919 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
920 | 16, /* bitsize */ | |
b34976b6 | 921 | FALSE, /* pc_relative */ |
252b5132 | 922 | 0, /* bitpos */ |
7619e7c7 AM |
923 | complain_overflow_signed, /* complain_on_overflow */ |
924 | ppc_elf_unhandled_reloc, /* special_function */ | |
925 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 926 | FALSE, /* partial_inplace */ |
252b5132 RH |
927 | 0, /* src_mask */ |
928 | 0xffff, /* dst_mask */ | |
b34976b6 | 929 | FALSE), /* pcrel_offset */ |
252b5132 | 930 | |
7619e7c7 AM |
931 | /* Like TPREL16, but no overflow. */ |
932 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
933 | 0, /* rightshift */ |
934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
935 | 16, /* bitsize */ | |
b34976b6 | 936 | FALSE, /* pc_relative */ |
252b5132 | 937 | 0, /* bitpos */ |
7619e7c7 AM |
938 | complain_overflow_dont, /* complain_on_overflow */ |
939 | ppc_elf_unhandled_reloc, /* special_function */ | |
940 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 941 | FALSE, /* partial_inplace */ |
252b5132 RH |
942 | 0, /* src_mask */ |
943 | 0xffff, /* dst_mask */ | |
b34976b6 | 944 | FALSE), /* pcrel_offset */ |
252b5132 | 945 | |
7619e7c7 AM |
946 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
947 | HOWTO (R_PPC_TPREL16_HI, | |
948 | 16, /* rightshift */ | |
949 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
950 | 16, /* bitsize */ | |
951 | FALSE, /* pc_relative */ | |
952 | 0, /* bitpos */ | |
953 | complain_overflow_dont, /* complain_on_overflow */ | |
954 | ppc_elf_unhandled_reloc, /* special_function */ | |
955 | "R_PPC_TPREL16_HI", /* name */ | |
956 | FALSE, /* partial_inplace */ | |
957 | 0, /* src_mask */ | |
958 | 0xffff, /* dst_mask */ | |
959 | FALSE), /* pcrel_offset */ | |
960 | ||
961 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
962 | HOWTO (R_PPC_TPREL16_HA, | |
963 | 16, /* rightshift */ | |
964 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
965 | 16, /* bitsize */ | |
966 | FALSE, /* pc_relative */ | |
967 | 0, /* bitpos */ | |
968 | complain_overflow_dont, /* complain_on_overflow */ | |
969 | ppc_elf_unhandled_reloc, /* special_function */ | |
970 | "R_PPC_TPREL16_HA", /* name */ | |
971 | FALSE, /* partial_inplace */ | |
972 | 0, /* src_mask */ | |
973 | 0xffff, /* dst_mask */ | |
974 | FALSE), /* pcrel_offset */ | |
975 | ||
976 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
977 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
978 | to the first entry. */ | |
979 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
980 | 0, /* rightshift */ |
981 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 16, /* bitsize */ | |
b34976b6 | 983 | FALSE, /* pc_relative */ |
252b5132 RH |
984 | 0, /* bitpos */ |
985 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
986 | ppc_elf_unhandled_reloc, /* special_function */ |
987 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 988 | FALSE, /* partial_inplace */ |
252b5132 RH |
989 | 0, /* src_mask */ |
990 | 0xffff, /* dst_mask */ | |
b34976b6 | 991 | FALSE), /* pcrel_offset */ |
252b5132 | 992 | |
7619e7c7 AM |
993 | /* Like GOT_TLSGD16, but no overflow. */ |
994 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 995 | 0, /* rightshift */ |
7619e7c7 | 996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 997 | 16, /* bitsize */ |
b34976b6 | 998 | FALSE, /* pc_relative */ |
252b5132 | 999 | 0, /* bitpos */ |
7619e7c7 AM |
1000 | complain_overflow_dont, /* complain_on_overflow */ |
1001 | ppc_elf_unhandled_reloc, /* special_function */ | |
1002 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1003 | FALSE, /* partial_inplace */ |
252b5132 RH |
1004 | 0, /* src_mask */ |
1005 | 0xffff, /* dst_mask */ | |
b34976b6 | 1006 | FALSE), /* pcrel_offset */ |
252b5132 | 1007 | |
7619e7c7 AM |
1008 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1009 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1010 | 16, /* rightshift */ | |
1011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1012 | 16, /* bitsize */ | |
1013 | FALSE, /* pc_relative */ | |
1014 | 0, /* bitpos */ | |
1015 | complain_overflow_dont, /* complain_on_overflow */ | |
1016 | ppc_elf_unhandled_reloc, /* special_function */ | |
1017 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1018 | FALSE, /* partial_inplace */ | |
1019 | 0, /* src_mask */ | |
1020 | 0xffff, /* dst_mask */ | |
1021 | FALSE), /* pcrel_offset */ | |
252b5132 | 1022 | |
7619e7c7 AM |
1023 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1024 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1025 | 16, /* rightshift */ | |
1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 16, /* bitsize */ | |
1028 | FALSE, /* pc_relative */ | |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_dont, /* complain_on_overflow */ | |
1031 | ppc_elf_unhandled_reloc, /* special_function */ | |
1032 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1033 | FALSE, /* partial_inplace */ | |
1034 | 0, /* src_mask */ | |
1035 | 0xffff, /* dst_mask */ | |
1036 | FALSE), /* pcrel_offset */ | |
1037 | ||
1038 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1039 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1040 | first entry. */ | |
1041 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1042 | 0, /* rightshift */ |
1043 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1044 | 16, /* bitsize */ | |
7619e7c7 | 1045 | FALSE, /* pc_relative */ |
252b5132 RH |
1046 | 0, /* bitpos */ |
1047 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1048 | ppc_elf_unhandled_reloc, /* special_function */ |
1049 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1050 | FALSE, /* partial_inplace */ |
252b5132 RH |
1051 | 0, /* src_mask */ |
1052 | 0xffff, /* dst_mask */ | |
b34976b6 | 1053 | FALSE), /* pcrel_offset */ |
252b5132 | 1054 | |
7619e7c7 AM |
1055 | /* Like GOT_TLSLD16, but no overflow. */ |
1056 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1057 | 0, /* rightshift */ |
7619e7c7 AM |
1058 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1059 | 16, /* bitsize */ | |
b34976b6 | 1060 | FALSE, /* pc_relative */ |
252b5132 RH |
1061 | 0, /* bitpos */ |
1062 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1063 | ppc_elf_unhandled_reloc, /* special_function */ |
1064 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1065 | FALSE, /* partial_inplace */ |
252b5132 | 1066 | 0, /* src_mask */ |
7619e7c7 | 1067 | 0xffff, /* dst_mask */ |
b34976b6 | 1068 | FALSE), /* pcrel_offset */ |
252b5132 | 1069 | |
7619e7c7 AM |
1070 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1071 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1072 | 16, /* rightshift */ | |
1073 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1074 | 16, /* bitsize */ | |
b34976b6 | 1075 | FALSE, /* pc_relative */ |
252b5132 RH |
1076 | 0, /* bitpos */ |
1077 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1078 | ppc_elf_unhandled_reloc, /* special_function */ |
1079 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1080 | FALSE, /* partial_inplace */ |
252b5132 | 1081 | 0, /* src_mask */ |
7619e7c7 | 1082 | 0xffff, /* dst_mask */ |
b34976b6 | 1083 | FALSE), /* pcrel_offset */ |
252b5132 | 1084 | |
7619e7c7 AM |
1085 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1086 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1087 | 16, /* rightshift */ | |
1088 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1089 | 16, /* bitsize */ | |
1090 | FALSE, /* pc_relative */ | |
1091 | 0, /* bitpos */ | |
1092 | complain_overflow_dont, /* complain_on_overflow */ | |
1093 | ppc_elf_unhandled_reloc, /* special_function */ | |
1094 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1095 | FALSE, /* partial_inplace */ | |
1096 | 0, /* src_mask */ | |
1097 | 0xffff, /* dst_mask */ | |
1098 | FALSE), /* pcrel_offset */ | |
1099 | ||
1100 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1101 | the offset to the entry. */ | |
1102 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1103 | 0, /* rightshift */ |
1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
b34976b6 | 1106 | FALSE, /* pc_relative */ |
252b5132 RH |
1107 | 0, /* bitpos */ |
1108 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1109 | ppc_elf_unhandled_reloc, /* special_function */ |
1110 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1111 | FALSE, /* partial_inplace */ |
252b5132 RH |
1112 | 0, /* src_mask */ |
1113 | 0xffff, /* dst_mask */ | |
b34976b6 | 1114 | FALSE), /* pcrel_offset */ |
252b5132 | 1115 | |
7619e7c7 AM |
1116 | /* Like GOT_DTPREL16, but no overflow. */ |
1117 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1118 | 0, /* rightshift */ | |
1119 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 16, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont, /* complain_on_overflow */ | |
1124 | ppc_elf_unhandled_reloc, /* special_function */ | |
1125 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0, /* src_mask */ | |
1128 | 0xffff, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
252b5132 | 1130 | |
7619e7c7 AM |
1131 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1132 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1133 | 16, /* rightshift */ | |
1134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 16, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_dont, /* complain_on_overflow */ | |
1139 | ppc_elf_unhandled_reloc, /* special_function */ | |
1140 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0, /* src_mask */ | |
1143 | 0xffff, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
252b5132 | 1145 | |
7619e7c7 AM |
1146 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1147 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1148 | 16, /* rightshift */ | |
1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 16, /* bitsize */ | |
1151 | FALSE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_dont, /* complain_on_overflow */ | |
1154 | ppc_elf_unhandled_reloc, /* special_function */ | |
1155 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0, /* src_mask */ | |
1158 | 0xffff, /* dst_mask */ | |
1159 | FALSE), /* pcrel_offset */ | |
c3668558 | 1160 | |
7619e7c7 AM |
1161 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1162 | offset to the entry. */ | |
1163 | HOWTO (R_PPC_GOT_TPREL16, | |
1164 | 0, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_signed, /* complain_on_overflow */ | |
1170 | ppc_elf_unhandled_reloc, /* special_function */ | |
1171 | "R_PPC_GOT_TPREL16", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xffff, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like GOT_TPREL16, but no overflow. */ | |
1178 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1179 | 0, /* rightshift */ | |
1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 16, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_dont, /* complain_on_overflow */ | |
1185 | ppc_elf_unhandled_reloc, /* special_function */ | |
1186 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0, /* src_mask */ | |
1189 | 0xffff, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1193 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1194 | 16, /* rightshift */ | |
1195 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 16, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
1199 | complain_overflow_dont, /* complain_on_overflow */ | |
1200 | ppc_elf_unhandled_reloc, /* special_function */ | |
1201 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1202 | FALSE, /* partial_inplace */ | |
1203 | 0, /* src_mask */ | |
1204 | 0xffff, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
1207 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1208 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1209 | 16, /* rightshift */ | |
1210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 16, /* bitsize */ | |
1212 | FALSE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_dont, /* complain_on_overflow */ | |
1215 | ppc_elf_unhandled_reloc, /* special_function */ | |
1216 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0, /* src_mask */ | |
1219 | 0xffff, /* dst_mask */ | |
1220 | FALSE), /* pcrel_offset */ | |
1221 | ||
1222 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1223 | in the SVR4 ELF ABI. */ | |
1224 | ||
1225 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1226 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1227 | 0, /* rightshift */ | |
1228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 32, /* bitsize */ | |
1230 | FALSE, /* pc_relative */ | |
1231 | 0, /* bitpos */ | |
1232 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1233 | bfd_elf_generic_reloc, /* special_function */ | |
1234 | "R_PPC_EMB_NADDR32", /* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0, /* src_mask */ | |
1237 | 0xffffffff, /* dst_mask */ | |
1238 | FALSE), /* pcrel_offset */ | |
1239 | ||
1240 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1241 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1242 | 0, /* rightshift */ | |
1243 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1244 | 16, /* bitsize */ | |
1245 | FALSE, /* pc_relative */ | |
1246 | 0, /* bitpos */ | |
1247 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1248 | bfd_elf_generic_reloc, /* special_function */ | |
1249 | "R_PPC_EMB_NADDR16", /* name */ | |
1250 | FALSE, /* partial_inplace */ | |
1251 | 0, /* src_mask */ | |
1252 | 0xffff, /* dst_mask */ | |
1253 | FALSE), /* pcrel_offset */ | |
1254 | ||
1255 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1256 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1257 | 0, /* rightshift */ | |
1258 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1259 | 16, /* bitsize */ | |
1260 | FALSE, /* pc_relative */ | |
1261 | 0, /* bitpos */ | |
1262 | complain_overflow_dont,/* complain_on_overflow */ | |
1263 | bfd_elf_generic_reloc, /* special_function */ | |
1264 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1265 | FALSE, /* partial_inplace */ | |
1266 | 0, /* src_mask */ | |
1267 | 0xffff, /* dst_mask */ | |
1268 | FALSE), /* pcrel_offset */ | |
1269 | ||
1270 | /* The high order 16 bits of the addend minus the symbol. */ | |
1271 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1272 | 16, /* rightshift */ | |
1273 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1274 | 16, /* bitsize */ | |
1275 | FALSE, /* pc_relative */ | |
1276 | 0, /* bitpos */ | |
1277 | complain_overflow_dont, /* complain_on_overflow */ | |
1278 | bfd_elf_generic_reloc, /* special_function */ | |
1279 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1280 | FALSE, /* partial_inplace */ | |
1281 | 0, /* src_mask */ | |
1282 | 0xffff, /* dst_mask */ | |
1283 | FALSE), /* pcrel_offset */ | |
1284 | ||
1285 | /* The high order 16 bits of the result of the addend minus the address, | |
1286 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1287 | is negative. */ | |
1288 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1289 | 16, /* rightshift */ | |
1290 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1291 | 16, /* bitsize */ | |
1292 | FALSE, /* pc_relative */ | |
1293 | 0, /* bitpos */ | |
1294 | complain_overflow_dont, /* complain_on_overflow */ | |
25dbc73a AM |
1295 | ppc_elf_addr16_ha_reloc, /* special_function */ |
1296 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1297 | FALSE, /* partial_inplace */ | |
1298 | 0, /* src_mask */ | |
1299 | 0xffff, /* dst_mask */ | |
1300 | FALSE), /* pcrel_offset */ | |
1301 | ||
1302 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1303 | address in the .sdata section, and returning the offset from | |
1304 | _SDA_BASE_ for that relocation. */ | |
1305 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1306 | 0, /* rightshift */ | |
1307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1308 | 16, /* bitsize */ | |
1309 | FALSE, /* pc_relative */ | |
1310 | 0, /* bitpos */ | |
bd6c6e2b | 1311 | complain_overflow_signed, /* complain_on_overflow */ |
25dbc73a AM |
1312 | bfd_elf_generic_reloc, /* special_function */ |
1313 | "R_PPC_EMB_SDAI16", /* name */ | |
1314 | FALSE, /* partial_inplace */ | |
1315 | 0, /* src_mask */ | |
1316 | 0xffff, /* dst_mask */ | |
1317 | FALSE), /* pcrel_offset */ | |
1318 | ||
1319 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1320 | address in the .sdata2 section, and returning the offset from | |
1321 | _SDA2_BASE_ for that relocation. */ | |
1322 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1323 | 0, /* rightshift */ | |
1324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1325 | 16, /* bitsize */ | |
1326 | FALSE, /* pc_relative */ | |
1327 | 0, /* bitpos */ | |
bd6c6e2b | 1328 | complain_overflow_signed, /* complain_on_overflow */ |
25dbc73a AM |
1329 | bfd_elf_generic_reloc, /* special_function */ |
1330 | "R_PPC_EMB_SDA2I16", /* name */ | |
1331 | FALSE, /* partial_inplace */ | |
1332 | 0, /* src_mask */ | |
1333 | 0xffff, /* dst_mask */ | |
1334 | FALSE), /* pcrel_offset */ | |
1335 | ||
1336 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1337 | small data items. */ | |
1338 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1339 | 0, /* rightshift */ | |
1340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1341 | 16, /* bitsize */ | |
1342 | FALSE, /* pc_relative */ | |
1343 | 0, /* bitpos */ | |
1344 | complain_overflow_signed, /* complain_on_overflow */ | |
1345 | bfd_elf_generic_reloc, /* special_function */ | |
1346 | "R_PPC_EMB_SDA2REL", /* name */ | |
1347 | FALSE, /* partial_inplace */ | |
1348 | 0, /* src_mask */ | |
1349 | 0xffff, /* dst_mask */ | |
1350 | FALSE), /* pcrel_offset */ | |
1351 | ||
1352 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1353 | signed offset from the appropriate base, and filling in the register | |
1354 | field with the appropriate register (0, 2, or 13). */ | |
1355 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1356 | 0, /* rightshift */ | |
1357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1358 | 16, /* bitsize */ | |
1359 | FALSE, /* pc_relative */ | |
1360 | 0, /* bitpos */ | |
1361 | complain_overflow_signed, /* complain_on_overflow */ | |
1362 | bfd_elf_generic_reloc, /* special_function */ | |
1363 | "R_PPC_EMB_SDA21", /* name */ | |
1364 | FALSE, /* partial_inplace */ | |
1365 | 0, /* src_mask */ | |
1366 | 0xffff, /* dst_mask */ | |
1367 | FALSE), /* pcrel_offset */ | |
1368 | ||
1369 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1370 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1371 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1372 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1373 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1374 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1375 | ||
1376 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1377 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1378 | register field with the appropriate register (0, 2, or 13). */ | |
1379 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1380 | 0, /* rightshift */ | |
1381 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1382 | 16, /* bitsize */ | |
1383 | TRUE, /* pc_relative */ | |
1384 | 0, /* bitpos */ | |
1385 | complain_overflow_signed, /* complain_on_overflow */ | |
1386 | bfd_elf_generic_reloc, /* special_function */ | |
1387 | "R_PPC_EMB_RELSDA", /* name */ | |
1388 | FALSE, /* partial_inplace */ | |
1389 | 0, /* src_mask */ | |
1390 | 0xffff, /* dst_mask */ | |
1391 | FALSE), /* pcrel_offset */ | |
1392 | ||
e054468f AM |
1393 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1394 | 0, /* rightshift */ | |
1395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1396 | 32, /* bitsize */ | |
1397 | FALSE, /* pc_relative */ | |
1398 | 0, /* bitpos */ | |
1399 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1400 | bfd_elf_generic_reloc, /* special_function */ | |
1401 | "R_PPC_IRELATIVE", /* name */ | |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | 0xffffffff, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
d7128ce4 AM |
1407 | /* A 16 bit relative relocation. */ |
1408 | HOWTO (R_PPC_REL16, /* type */ | |
1409 | 0, /* rightshift */ | |
1410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 16, /* bitsize */ | |
1412 | TRUE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1415 | bfd_elf_generic_reloc, /* special_function */ | |
1416 | "R_PPC_REL16", /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | 0xffff, /* dst_mask */ | |
1420 | TRUE), /* pcrel_offset */ | |
1421 | ||
1422 | /* A 16 bit relative relocation without overflow. */ | |
1423 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1424 | 0, /* rightshift */ | |
1425 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1426 | 16, /* bitsize */ | |
1427 | TRUE, /* pc_relative */ | |
1428 | 0, /* bitpos */ | |
1429 | complain_overflow_dont,/* complain_on_overflow */ | |
1430 | bfd_elf_generic_reloc, /* special_function */ | |
1431 | "R_PPC_REL16_LO", /* name */ | |
1432 | FALSE, /* partial_inplace */ | |
1433 | 0, /* src_mask */ | |
1434 | 0xffff, /* dst_mask */ | |
1435 | TRUE), /* pcrel_offset */ | |
1436 | ||
1437 | /* The high order 16 bits of a relative address. */ | |
1438 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1439 | 16, /* rightshift */ | |
1440 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1441 | 16, /* bitsize */ | |
1442 | TRUE, /* pc_relative */ | |
1443 | 0, /* bitpos */ | |
1444 | complain_overflow_dont, /* complain_on_overflow */ | |
1445 | bfd_elf_generic_reloc, /* special_function */ | |
1446 | "R_PPC_REL16_HI", /* name */ | |
1447 | FALSE, /* partial_inplace */ | |
1448 | 0, /* src_mask */ | |
1449 | 0xffff, /* dst_mask */ | |
1450 | TRUE), /* pcrel_offset */ | |
1451 | ||
1452 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1453 | the low 16 bits, treated as a signed number, is negative. */ | |
1454 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1455 | 16, /* rightshift */ | |
1456 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1457 | 16, /* bitsize */ | |
1458 | TRUE, /* pc_relative */ | |
1459 | 0, /* bitpos */ | |
1460 | complain_overflow_dont, /* complain_on_overflow */ | |
1461 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1462 | "R_PPC_REL16_HA", /* name */ | |
1463 | FALSE, /* partial_inplace */ | |
1464 | 0, /* src_mask */ | |
1465 | 0xffff, /* dst_mask */ | |
1466 | TRUE), /* pcrel_offset */ | |
1467 | ||
25dbc73a AM |
1468 | /* GNU extension to record C++ vtable hierarchy. */ |
1469 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1470 | 0, /* rightshift */ | |
1471 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1472 | 0, /* bitsize */ | |
1473 | FALSE, /* pc_relative */ | |
1474 | 0, /* bitpos */ | |
1475 | complain_overflow_dont, /* complain_on_overflow */ | |
1476 | NULL, /* special_function */ | |
1477 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1478 | FALSE, /* partial_inplace */ | |
1479 | 0, /* src_mask */ | |
1480 | 0, /* dst_mask */ | |
1481 | FALSE), /* pcrel_offset */ | |
1482 | ||
1483 | /* GNU extension to record C++ vtable member usage. */ | |
1484 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1485 | 0, /* rightshift */ | |
1486 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1487 | 0, /* bitsize */ | |
1488 | FALSE, /* pc_relative */ | |
1489 | 0, /* bitpos */ | |
1490 | complain_overflow_dont, /* complain_on_overflow */ | |
1491 | NULL, /* special_function */ | |
1492 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1493 | FALSE, /* partial_inplace */ |
1494 | 0, /* src_mask */ | |
25dbc73a | 1495 | 0, /* dst_mask */ |
7619e7c7 AM |
1496 | FALSE), /* pcrel_offset */ |
1497 | ||
25dbc73a AM |
1498 | /* Phony reloc to handle AIX style TOC entries. */ |
1499 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1500 | 0, /* rightshift */ |
1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 16, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
25dbc73a | 1505 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1506 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1507 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1508 | FALSE, /* partial_inplace */ |
1509 | 0, /* src_mask */ | |
1510 | 0xffff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1512 | }; |
1513 | \f | |
1514 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1515 | ||
1516 | static void | |
1517 | ppc_elf_howto_init (void) | |
1518 | { | |
1519 | unsigned int i, type; | |
1520 | ||
1521 | for (i = 0; | |
1522 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1523 | i++) | |
1524 | { | |
1525 | type = ppc_elf_howto_raw[i].type; | |
1526 | if (type >= (sizeof (ppc_elf_howto_table) | |
1527 | / sizeof (ppc_elf_howto_table[0]))) | |
1528 | abort (); | |
1529 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | static reloc_howto_type * | |
1534 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1535 | bfd_reloc_code_real_type code) | |
1536 | { | |
1537 | enum elf_ppc_reloc_type r; | |
1538 | ||
1539 | /* Initialize howto table if not already done. */ | |
1540 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1541 | ppc_elf_howto_init (); | |
1542 | ||
1543 | switch (code) | |
1544 | { | |
1545 | default: | |
1546 | return NULL; | |
1547 | ||
1548 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1549 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1550 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1551 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
1552 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
1553 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1554 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1555 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1556 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1557 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1558 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1559 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1560 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1561 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1562 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
1563 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
1564 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1565 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1566 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1567 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1568 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1569 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1570 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1571 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1572 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1573 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
1574 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1575 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1576 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1577 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
1578 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
1579 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1580 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1581 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1582 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
1583 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1584 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1585 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a AM |
1586 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1587 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
1588 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
1589 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1590 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1591 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1592 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
1593 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
1594 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1595 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1596 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1597 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1598 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1599 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1600 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1601 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1602 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1603 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1604 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1605 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1606 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1607 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1608 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1609 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1610 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1611 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1612 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1613 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1614 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1615 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1616 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1617 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1618 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1619 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1620 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1621 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1622 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1623 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1624 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1625 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1626 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1627 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1628 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
d7128ce4 AM |
1629 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1630 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1631 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1632 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
25dbc73a AM |
1633 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1634 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1635 | } | |
1636 | ||
1637 | return ppc_elf_howto_table[r]; | |
1638 | }; | |
1639 | ||
157090f7 AM |
1640 | static reloc_howto_type * |
1641 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1642 | const char *r_name) | |
1643 | { | |
1644 | unsigned int i; | |
1645 | ||
1646 | for (i = 0; | |
1647 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1648 | i++) | |
1649 | if (ppc_elf_howto_raw[i].name != NULL | |
1650 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
1651 | return &ppc_elf_howto_raw[i]; | |
1652 | ||
1653 | return NULL; | |
1654 | } | |
1655 | ||
25dbc73a AM |
1656 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1657 | ||
1658 | static void | |
1659 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1660 | arelent *cache_ptr, | |
1661 | Elf_Internal_Rela *dst) | |
1662 | { | |
1663 | /* Initialize howto table if not already done. */ | |
1664 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1665 | ppc_elf_howto_init (); | |
1666 | ||
1667 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1668 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
375de94a AM |
1669 | |
1670 | /* Just because the above assert didn't trigger doesn't mean that | |
1671 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
1672 | if (!cache_ptr->howto) | |
1673 | { | |
1674 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
1675 | abfd, ELF32_R_TYPE (dst->r_info)); | |
1676 | bfd_set_error (bfd_error_bad_value); | |
1677 | ||
1678 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
1679 | } | |
25dbc73a AM |
1680 | } |
1681 | ||
d7128ce4 | 1682 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
1683 | |
1684 | static bfd_reloc_status_type | |
1685 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
1686 | arelent *reloc_entry, | |
1687 | asymbol *symbol, | |
1688 | void *data ATTRIBUTE_UNUSED, | |
1689 | asection *input_section, | |
1690 | bfd *output_bfd, | |
1691 | char **error_message ATTRIBUTE_UNUSED) | |
1692 | { | |
1693 | bfd_vma relocation; | |
1694 | ||
1695 | if (output_bfd != NULL) | |
1696 | { | |
1697 | reloc_entry->address += input_section->output_offset; | |
1698 | return bfd_reloc_ok; | |
1699 | } | |
1700 | ||
1701 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
1702 | return bfd_reloc_outofrange; | |
1703 | ||
1704 | if (bfd_is_com_section (symbol->section)) | |
1705 | relocation = 0; | |
1706 | else | |
1707 | relocation = symbol->value; | |
1708 | ||
1709 | relocation += symbol->section->output_section->vma; | |
1710 | relocation += symbol->section->output_offset; | |
1711 | relocation += reloc_entry->addend; | |
d7128ce4 AM |
1712 | if (reloc_entry->howto->pc_relative) |
1713 | relocation -= reloc_entry->address; | |
25dbc73a AM |
1714 | |
1715 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1716 | ||
1717 | return bfd_reloc_continue; | |
1718 | } | |
1719 | ||
1720 | static bfd_reloc_status_type | |
1721 | ppc_elf_unhandled_reloc (bfd *abfd, | |
1722 | arelent *reloc_entry, | |
1723 | asymbol *symbol, | |
1724 | void *data, | |
1725 | asection *input_section, | |
1726 | bfd *output_bfd, | |
1727 | char **error_message) | |
1728 | { | |
1729 | /* If this is a relocatable link (output_bfd test tells us), just | |
1730 | call the generic function. Any adjustment will be done at final | |
1731 | link time. */ | |
1732 | if (output_bfd != NULL) | |
1733 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1734 | input_section, output_bfd, error_message); | |
1735 | ||
1736 | if (error_message != NULL) | |
1737 | { | |
1738 | static char buf[60]; | |
1739 | sprintf (buf, _("generic linker can't handle %s"), | |
1740 | reloc_entry->howto->name); | |
1741 | *error_message = buf; | |
1742 | } | |
1743 | return bfd_reloc_dangerous; | |
1744 | } | |
1745 | \f | |
1746 | /* Sections created by the linker. */ | |
1747 | ||
1748 | typedef struct elf_linker_section | |
1749 | { | |
c9a2f333 | 1750 | /* Pointer to the bfd section. */ |
25dbc73a | 1751 | asection *section; |
c9a2f333 AM |
1752 | /* Section name. */ |
1753 | const char *name; | |
1754 | /* Associated bss section name. */ | |
1755 | const char *bss_name; | |
1756 | /* Associated symbol name. */ | |
1757 | const char *sym_name; | |
046183de AM |
1758 | /* Associated symbol. */ |
1759 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1760 | } elf_linker_section_t; |
1761 | ||
1762 | /* Linked list of allocated pointer entries. This hangs off of the | |
1763 | symbol lists, and provides allows us to return different pointers, | |
1764 | based on different addend's. */ | |
1765 | ||
1766 | typedef struct elf_linker_section_pointers | |
1767 | { | |
1768 | /* next allocated pointer for this symbol */ | |
1769 | struct elf_linker_section_pointers *next; | |
1770 | /* offset of pointer from beginning of section */ | |
1771 | bfd_vma offset; | |
1772 | /* addend used */ | |
1773 | bfd_vma addend; | |
1774 | /* which linker section this is */ | |
1775 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1776 | } elf_linker_section_pointers_t; |
1777 | ||
1778 | struct ppc_elf_obj_tdata | |
1779 | { | |
1780 | struct elf_obj_tdata elf; | |
1781 | ||
1782 | /* A mapping from local symbols to offsets into the various linker | |
1783 | sections added. This is index by the symbol index. */ | |
1784 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
1785 | |
1786 | /* Flags used to auto-detect plt type. */ | |
1787 | unsigned int makes_plt_call : 1; | |
1788 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
1789 | }; |
1790 | ||
1791 | #define ppc_elf_tdata(bfd) \ | |
1792 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1793 | |
25dbc73a AM |
1794 | #define elf_local_ptr_offsets(bfd) \ |
1795 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1796 | |
0c8d6e5c AM |
1797 | #define is_ppc_elf(bfd) \ |
1798 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
1799 | && elf_object_id (bfd) == PPC32_ELF_TDATA) | |
1800 | ||
25dbc73a | 1801 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1802 | |
25dbc73a AM |
1803 | static bfd_boolean |
1804 | ppc_elf_mkobject (bfd *abfd) | |
1805 | { | |
0ffa91dd NC |
1806 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
1807 | PPC32_ELF_TDATA); | |
25dbc73a | 1808 | } |
7619e7c7 | 1809 | |
25dbc73a AM |
1810 | /* Fix bad default arch selected for a 32 bit input bfd when the |
1811 | default is 64 bit. */ | |
7619e7c7 | 1812 | |
25dbc73a AM |
1813 | static bfd_boolean |
1814 | ppc_elf_object_p (bfd *abfd) | |
1815 | { | |
1816 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
1817 | { | |
1818 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1819 | |
25dbc73a AM |
1820 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1821 | { | |
1822 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1823 | abfd->arch_info = abfd->arch_info->next; | |
1824 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1825 | } | |
1826 | } | |
1827 | return TRUE; | |
1828 | } | |
7619e7c7 | 1829 | |
25dbc73a | 1830 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1831 | |
25dbc73a AM |
1832 | static bfd_boolean |
1833 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1834 | { | |
1835 | BFD_ASSERT (!elf_flags_init (abfd) | |
1836 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1837 | |
25dbc73a AM |
1838 | elf_elfheader (abfd)->e_flags = flags; |
1839 | elf_flags_init (abfd) = TRUE; | |
1840 | return TRUE; | |
1841 | } | |
1842 | ||
25dbc73a | 1843 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1844 | |
b34976b6 | 1845 | static bfd_boolean |
25dbc73a | 1846 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1847 | { |
25dbc73a AM |
1848 | int offset; |
1849 | unsigned int size; | |
252b5132 | 1850 | |
25dbc73a AM |
1851 | switch (note->descsz) |
1852 | { | |
1853 | default: | |
1854 | return FALSE; | |
252b5132 | 1855 | |
25dbc73a AM |
1856 | case 268: /* Linux/PPC. */ |
1857 | /* pr_cursig */ | |
1858 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
deaaf2f3 | 1859 | |
25dbc73a AM |
1860 | /* pr_pid */ |
1861 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9abc968f | 1862 | |
25dbc73a AM |
1863 | /* pr_reg */ |
1864 | offset = 72; | |
1865 | size = 192; | |
deaaf2f3 | 1866 | |
25dbc73a AM |
1867 | break; |
1868 | } | |
deaaf2f3 | 1869 | |
25dbc73a AM |
1870 | /* Make a ".reg/999" section. */ |
1871 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1872 | size, note->descpos + offset); | |
1873 | } | |
252b5132 | 1874 | |
25dbc73a AM |
1875 | static bfd_boolean |
1876 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1877 | { | |
1878 | switch (note->descsz) | |
deaaf2f3 | 1879 | { |
25dbc73a AM |
1880 | default: |
1881 | return FALSE; | |
deaaf2f3 | 1882 | |
25dbc73a AM |
1883 | case 128: /* Linux/PPC elf_prpsinfo. */ |
1884 | elf_tdata (abfd)->core_program | |
1885 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1886 | elf_tdata (abfd)->core_command | |
1887 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1888 | } | |
9abc968f | 1889 | |
25dbc73a AM |
1890 | /* Note that for some reason, a spurious space is tacked |
1891 | onto the end of the args in some (at least one anyway) | |
1892 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1893 | |
25dbc73a AM |
1894 | { |
1895 | char *command = elf_tdata (abfd)->core_command; | |
1896 | int n = strlen (command); | |
70bccea4 | 1897 | |
25dbc73a AM |
1898 | if (0 < n && command[n - 1] == ' ') |
1899 | command[n - 1] = '\0'; | |
1900 | } | |
deaaf2f3 | 1901 | |
25dbc73a AM |
1902 | return TRUE; |
1903 | } | |
deaaf2f3 | 1904 | |
183e98be AM |
1905 | static char * |
1906 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
1907 | { | |
1908 | switch (note_type) | |
1909 | { | |
1910 | default: | |
1911 | return NULL; | |
1912 | ||
1913 | case NT_PRPSINFO: | |
1914 | { | |
1915 | char data[128]; | |
1916 | va_list ap; | |
1917 | ||
1918 | va_start (ap, note_type); | |
1919 | memset (data, 0, 32); | |
1920 | strncpy (data + 32, va_arg (ap, const char *), 16); | |
1921 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
1922 | va_end (ap); | |
1923 | return elfcore_write_note (abfd, buf, bufsiz, | |
1924 | "CORE", note_type, data, sizeof (data)); | |
1925 | } | |
1926 | ||
1927 | case NT_PRSTATUS: | |
1928 | { | |
1929 | char data[268]; | |
1930 | va_list ap; | |
1931 | long pid; | |
1932 | int cursig; | |
1933 | const void *greg; | |
1934 | ||
1935 | va_start (ap, note_type); | |
1936 | memset (data, 0, 72); | |
1937 | pid = va_arg (ap, long); | |
1938 | bfd_put_32 (abfd, pid, data + 24); | |
1939 | cursig = va_arg (ap, int); | |
1940 | bfd_put_16 (abfd, cursig, data + 12); | |
1941 | greg = va_arg (ap, const void *); | |
1942 | memcpy (data + 72, greg, 192); | |
1943 | memset (data + 264, 0, 4); | |
1944 | va_end (ap); | |
1945 | return elfcore_write_note (abfd, buf, bufsiz, | |
1946 | "CORE", note_type, data, sizeof (data)); | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | ||
25dbc73a AM |
1951 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1952 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1953 | |
25dbc73a AM |
1954 | static bfd_vma |
1955 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1956 | const asection *plt ATTRIBUTE_UNUSED, | |
1957 | const arelent *rel) | |
1958 | { | |
1959 | return rel->address; | |
1960 | } | |
deaaf2f3 | 1961 | |
25dbc73a | 1962 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1963 | is called when bfd_section_from_shdr finds a section with an unknown |
1964 | type. */ | |
deaaf2f3 | 1965 | |
25dbc73a | 1966 | static bfd_boolean |
6dc132d9 L |
1967 | ppc_elf_section_from_shdr (bfd *abfd, |
1968 | Elf_Internal_Shdr *hdr, | |
1969 | const char *name, | |
1970 | int shindex) | |
25dbc73a AM |
1971 | { |
1972 | asection *newsect; | |
1973 | flagword flags; | |
d1c6de6f | 1974 | |
6dc132d9 | 1975 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1976 | return FALSE; |
deaaf2f3 | 1977 | |
25dbc73a AM |
1978 | newsect = hdr->bfd_section; |
1979 | flags = bfd_get_section_flags (abfd, newsect); | |
1980 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1981 | flags |= SEC_EXCLUDE; | |
9abc968f | 1982 | |
25dbc73a AM |
1983 | if (hdr->sh_type == SHT_ORDERED) |
1984 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1985 | |
25dbc73a AM |
1986 | bfd_set_section_flags (abfd, newsect, flags); |
1987 | return TRUE; | |
1988 | } | |
1989 | ||
1990 | /* Set up any other section flags and such that may be necessary. */ | |
1991 | ||
1992 | static bfd_boolean | |
1993 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1994 | Elf_Internal_Shdr *shdr, | |
1995 | asection *asect) | |
1996 | { | |
d30e8e7c | 1997 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
25dbc73a AM |
1998 | shdr->sh_flags |= SHF_EXCLUDE; |
1999 | ||
2000 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
2001 | shdr->sh_type = SHT_ORDERED; | |
2002 | ||
2003 | return TRUE; | |
2004 | } | |
2005 | ||
2006 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2007 | need to bump up the number of section headers. */ | |
2008 | ||
2009 | static int | |
a6b96beb AM |
2010 | ppc_elf_additional_program_headers (bfd *abfd, |
2011 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2012 | { |
2013 | asection *s; | |
2014 | int ret = 0; | |
d1c6de6f | 2015 | |
25dbc73a AM |
2016 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2017 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2018 | ++ret; | |
d1c6de6f | 2019 | |
25dbc73a AM |
2020 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2021 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2022 | ++ret; | |
deaaf2f3 | 2023 | |
25dbc73a AM |
2024 | return ret; |
2025 | } | |
deaaf2f3 | 2026 | |
25dbc73a AM |
2027 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2028 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2029 | that the linker doesn't crater when trying to make more than | |
2030 | 2 sections. */ | |
e656e369 | 2031 | |
b35d266b | 2032 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2033 | { |
0112cd26 NC |
2034 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2035 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2036 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2037 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2038 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2039 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2040 | { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 }, | |
2041 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2042 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2043 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2044 | }; |
2045 | ||
551b43fd AM |
2046 | /* This is what we want for new plt/got. */ |
2047 | static struct bfd_elf_special_section ppc_alt_plt = | |
0112cd26 | 2048 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2049 | |
2050 | static const struct bfd_elf_special_section * | |
2051 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 2052 | { |
b35d266b | 2053 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2054 | |
2055 | /* See if this is one of the special sections. */ | |
2056 | if (sec->name == NULL) | |
2057 | return NULL; | |
2058 | ||
2059 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2060 | sec->use_rela_p); | |
2061 | if (ssect != NULL) | |
2062 | { | |
2063 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2064 | ssect = &ppc_alt_plt; | |
2065 | return ssect; | |
2066 | } | |
2067 | ||
2068 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2069 | } | |
25dbc73a AM |
2070 | \f |
2071 | /* Very simple linked list structure for recording apuinfo values. */ | |
2072 | typedef struct apuinfo_list | |
2073 | { | |
2074 | struct apuinfo_list *next; | |
2075 | unsigned long value; | |
2076 | } | |
2077 | apuinfo_list; | |
e656e369 | 2078 | |
25dbc73a | 2079 | static apuinfo_list *head; |
deaaf2f3 | 2080 | |
deaaf2f3 | 2081 | |
25dbc73a AM |
2082 | static void |
2083 | apuinfo_list_init (void) | |
2084 | { | |
2085 | head = NULL; | |
2086 | } | |
9abc968f | 2087 | |
25dbc73a AM |
2088 | static void |
2089 | apuinfo_list_add (unsigned long value) | |
2090 | { | |
2091 | apuinfo_list *entry = head; | |
deaaf2f3 | 2092 | |
25dbc73a AM |
2093 | while (entry != NULL) |
2094 | { | |
2095 | if (entry->value == value) | |
2096 | return; | |
2097 | entry = entry->next; | |
2098 | } | |
b4a38de6 | 2099 | |
25dbc73a AM |
2100 | entry = bfd_malloc (sizeof (* entry)); |
2101 | if (entry == NULL) | |
2102 | return; | |
e656e369 | 2103 | |
25dbc73a AM |
2104 | entry->value = value; |
2105 | entry->next = head; | |
2106 | head = entry; | |
2107 | } | |
9abc968f | 2108 | |
25dbc73a AM |
2109 | static unsigned |
2110 | apuinfo_list_length (void) | |
2111 | { | |
2112 | apuinfo_list *entry; | |
2113 | unsigned long count; | |
9abc968f | 2114 | |
25dbc73a AM |
2115 | for (entry = head, count = 0; |
2116 | entry; | |
2117 | entry = entry->next) | |
2118 | ++ count; | |
e656e369 | 2119 | |
25dbc73a AM |
2120 | return count; |
2121 | } | |
eea6121a | 2122 | |
25dbc73a AM |
2123 | static inline unsigned long |
2124 | apuinfo_list_element (unsigned long number) | |
2125 | { | |
2126 | apuinfo_list * entry; | |
e656e369 | 2127 | |
25dbc73a AM |
2128 | for (entry = head; |
2129 | entry && number --; | |
2130 | entry = entry->next) | |
2131 | ; | |
252b5132 | 2132 | |
25dbc73a AM |
2133 | return entry ? entry->value : 0; |
2134 | } | |
2135 | ||
2136 | static void | |
2137 | apuinfo_list_finish (void) | |
2138 | { | |
2139 | apuinfo_list *entry; | |
2140 | ||
2141 | for (entry = head; entry;) | |
252b5132 | 2142 | { |
25dbc73a AM |
2143 | apuinfo_list *next = entry->next; |
2144 | free (entry); | |
2145 | entry = next; | |
2146 | } | |
9abc968f | 2147 | |
25dbc73a AM |
2148 | head = NULL; |
2149 | } | |
9abc968f | 2150 | |
25dbc73a AM |
2151 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2152 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2153 | |
25dbc73a AM |
2154 | /* Scan the input BFDs and create a linked list of |
2155 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2156 | |
25dbc73a AM |
2157 | static void |
2158 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2159 | { | |
2160 | bfd *ibfd; | |
2161 | asection *asec; | |
2162 | char *buffer; | |
2163 | unsigned num_input_sections; | |
2164 | bfd_size_type output_section_size; | |
2165 | unsigned i; | |
2166 | unsigned num_entries; | |
2167 | unsigned long offset; | |
2168 | unsigned long length; | |
2169 | const char *error_message = NULL; | |
9abc968f | 2170 | |
25dbc73a AM |
2171 | if (link_info == NULL) |
2172 | return; | |
9abc968f | 2173 | |
25dbc73a AM |
2174 | /* Scan the input bfds, looking for apuinfo sections. */ |
2175 | num_input_sections = 0; | |
2176 | output_section_size = 0; | |
252b5132 | 2177 | |
25dbc73a | 2178 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) |
252b5132 | 2179 | { |
25dbc73a AM |
2180 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2181 | if (asec) | |
252b5132 | 2182 | { |
25dbc73a AM |
2183 | ++ num_input_sections; |
2184 | output_section_size += asec->size; | |
252b5132 | 2185 | } |
252b5132 RH |
2186 | } |
2187 | ||
25dbc73a AM |
2188 | /* We need at least one input sections |
2189 | in order to make merging worthwhile. */ | |
2190 | if (num_input_sections < 1) | |
2191 | return; | |
deaaf2f3 | 2192 | |
25dbc73a AM |
2193 | /* Just make sure that the output section exists as well. */ |
2194 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2195 | if (asec == NULL) | |
2196 | return; | |
252b5132 | 2197 | |
25dbc73a AM |
2198 | /* Allocate a buffer for the contents of the input sections. */ |
2199 | buffer = bfd_malloc (output_section_size); | |
2200 | if (buffer == NULL) | |
2201 | return; | |
252b5132 | 2202 | |
25dbc73a AM |
2203 | offset = 0; |
2204 | apuinfo_list_init (); | |
252b5132 | 2205 | |
25dbc73a AM |
2206 | /* Read in the input sections contents. */ |
2207 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
252b5132 | 2208 | { |
25dbc73a AM |
2209 | unsigned long datum; |
2210 | char *ptr; | |
252b5132 | 2211 | |
25dbc73a AM |
2212 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2213 | if (asec == NULL) | |
2214 | continue; | |
252b5132 | 2215 | |
25dbc73a AM |
2216 | length = asec->size; |
2217 | if (length < 24) | |
2218 | { | |
2219 | error_message = _("corrupt or empty %s section in %B"); | |
2220 | goto fail; | |
2221 | } | |
252b5132 | 2222 | |
25dbc73a AM |
2223 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
2224 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
2225 | { | |
2226 | error_message = _("unable to read in %s section from %B"); | |
2227 | goto fail; | |
2228 | } | |
252b5132 | 2229 | |
25dbc73a AM |
2230 | /* Process the contents of the section. */ |
2231 | ptr = buffer + offset; | |
2232 | error_message = _("corrupt %s section in %B"); | |
252b5132 | 2233 | |
25dbc73a AM |
2234 | /* Verify the contents of the header. Note - we have to |
2235 | extract the values this way in order to allow for a | |
2236 | host whose endian-ness is different from the target. */ | |
2237 | datum = bfd_get_32 (ibfd, ptr); | |
2238 | if (datum != sizeof APUINFO_LABEL) | |
2239 | goto fail; | |
252b5132 | 2240 | |
25dbc73a AM |
2241 | datum = bfd_get_32 (ibfd, ptr + 8); |
2242 | if (datum != 0x2) | |
2243 | goto fail; | |
252b5132 | 2244 | |
25dbc73a AM |
2245 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) |
2246 | goto fail; | |
252b5132 | 2247 | |
25dbc73a AM |
2248 | /* Get the number of bytes used for apuinfo entries. */ |
2249 | datum = bfd_get_32 (ibfd, ptr + 4); | |
2250 | if (datum + 20 != length) | |
2251 | goto fail; | |
2252 | ||
2253 | /* Make sure that we do not run off the end of the section. */ | |
2254 | if (offset + length > output_section_size) | |
2255 | goto fail; | |
2256 | ||
2257 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
2258 | for (i = 0; i < datum; i += 4) | |
2259 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
2260 | ||
2261 | /* Update the offset. */ | |
2262 | offset += length; | |
252b5132 RH |
2263 | } |
2264 | ||
25dbc73a | 2265 | error_message = NULL; |
252b5132 | 2266 | |
25dbc73a AM |
2267 | /* Compute the size of the output section. */ |
2268 | num_entries = apuinfo_list_length (); | |
2269 | output_section_size = 20 + num_entries * 4; | |
252b5132 | 2270 | |
25dbc73a AM |
2271 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2272 | ||
2273 | if (! bfd_set_section_size (abfd, asec, output_section_size)) | |
2274 | ibfd = abfd, | |
2275 | error_message = _("warning: unable to set size of %s section in %B"); | |
2276 | ||
2277 | fail: | |
2278 | free (buffer); | |
2279 | ||
2280 | if (error_message) | |
2281 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2282 | } | |
252b5132 | 2283 | |
25dbc73a AM |
2284 | /* Prevent the output section from accumulating the input sections' |
2285 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2286 | |
25dbc73a AM |
2287 | static bfd_boolean |
2288 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2289 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2290 | asection *asec, |
2291 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2292 | { | |
2293 | return (apuinfo_list_length () | |
2294 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
252b5132 RH |
2295 | } |
2296 | ||
25dbc73a AM |
2297 | /* Finally we can generate the output section. */ |
2298 | ||
2299 | static void | |
2300 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2301 | { |
25dbc73a AM |
2302 | bfd_byte *buffer; |
2303 | asection *asec; | |
2304 | unsigned i; | |
2305 | unsigned num_entries; | |
2306 | bfd_size_type length; | |
7619e7c7 | 2307 | |
25dbc73a AM |
2308 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2309 | if (asec == NULL) | |
2310 | return; | |
2311 | ||
2312 | if (apuinfo_list_length () == 0) | |
2313 | return; | |
2314 | ||
2315 | length = asec->size; | |
2316 | if (length < 20) | |
2317 | return; | |
2318 | ||
2319 | buffer = bfd_malloc (length); | |
2320 | if (buffer == NULL) | |
7619e7c7 | 2321 | { |
25dbc73a AM |
2322 | (*_bfd_error_handler) |
2323 | (_("failed to allocate space for new APUinfo section.")); | |
2324 | return; | |
7619e7c7 | 2325 | } |
7619e7c7 | 2326 | |
25dbc73a AM |
2327 | /* Create the apuinfo header. */ |
2328 | num_entries = apuinfo_list_length (); | |
2329 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2330 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2331 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2332 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2333 | |
25dbc73a AM |
2334 | length = 20; |
2335 | for (i = 0; i < num_entries; i++) | |
feee612b | 2336 | { |
25dbc73a AM |
2337 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2338 | length += 4; | |
feee612b | 2339 | } |
feee612b | 2340 | |
25dbc73a AM |
2341 | if (length != asec->size) |
2342 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2343 | |
25dbc73a AM |
2344 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2345 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2346 | |
25dbc73a AM |
2347 | free (buffer); |
2348 | ||
2349 | apuinfo_list_finish (); | |
252b5132 | 2350 | } |
25dbc73a | 2351 | \f |
7382d32a | 2352 | static bfd_boolean |
c6dd29ce | 2353 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2354 | { |
c6dd29ce | 2355 | bfd_byte buf[GLINK_ENTRY_SIZE]; |
7382d32a | 2356 | |
c6dd29ce | 2357 | if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE)) |
7382d32a AM |
2358 | return FALSE; |
2359 | ||
c6dd29ce AM |
2360 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2361 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
2362 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 | |
2363 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2364 | } |
2365 | ||
468392fb AM |
2366 | static bfd_boolean |
2367 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2368 | { | |
2369 | bfd_vma vma = *(bfd_vma *) ptr; | |
2370 | return ((section->flags & SEC_ALLOC) != 0 | |
2371 | && section->vma <= vma | |
2372 | && vma < section->vma + section->size); | |
2373 | } | |
2374 | ||
2375 | static long | |
2376 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2377 | long dynsymcount, asymbol **dynsyms, | |
2378 | asymbol **ret) | |
2379 | { | |
2380 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2381 | asection *plt, *relplt, *dynamic, *glink; | |
2382 | bfd_vma glink_vma = 0; | |
2383 | bfd_vma resolv_vma = 0; | |
2384 | bfd_vma stub_vma; | |
2385 | asymbol *s; | |
2386 | arelent *p; | |
2387 | long count, i; | |
2388 | size_t size; | |
2389 | char *names; | |
2390 | bfd_byte buf[4]; | |
2391 | ||
2392 | *ret = NULL; | |
2393 | ||
2394 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2395 | return 0; | |
2396 | ||
2397 | if (dynsymcount <= 0) | |
2398 | return 0; | |
2399 | ||
2400 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2401 | if (relplt == NULL) | |
2402 | return 0; | |
2403 | ||
2404 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2405 | if (plt == NULL) | |
2406 | return 0; | |
2407 | ||
2408 | /* Call common code to handle old-style executable PLTs. */ | |
2409 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2410 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2411 | dynsymcount, dynsyms, ret); | |
2412 | ||
2413 | /* If this object was prelinked, the prelinker stored the address | |
2414 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2415 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2416 | if (dynamic != NULL) | |
2417 | { | |
2418 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2419 | size_t extdynsize; | |
2420 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2421 | ||
2422 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2423 | return -1; | |
2424 | ||
2425 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2426 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2427 | ||
2428 | extdyn = dynbuf; | |
2429 | extdynend = extdyn + dynamic->size; | |
2430 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2431 | { | |
2432 | Elf_Internal_Dyn dyn; | |
2433 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2434 | ||
2435 | if (dyn.d_tag == DT_NULL) | |
2436 | break; | |
2437 | ||
2438 | if (dyn.d_tag == DT_PPC_GOT) | |
2439 | { | |
2440 | unsigned int g_o_t = dyn.d_un.d_val; | |
2441 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2442 | if (got != NULL | |
2443 | && bfd_get_section_contents (abfd, got, buf, | |
2444 | g_o_t - got->vma + 4, 4)) | |
2445 | glink_vma = bfd_get_32 (abfd, buf); | |
2446 | break; | |
2447 | } | |
2448 | } | |
2449 | free (dynbuf); | |
2450 | } | |
2451 | ||
2452 | /* Otherwise we read the first plt entry. */ | |
2453 | if (glink_vma == 0) | |
2454 | { | |
2455 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2456 | glink_vma = bfd_get_32 (abfd, buf); | |
2457 | } | |
2458 | ||
2459 | if (glink_vma == 0) | |
2460 | return 0; | |
2461 | ||
2462 | /* The .glink section usually does not survive the final | |
2463 | link; search for the section (usually .text) where the | |
2464 | glink stubs now reside. */ | |
2465 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2466 | if (glink == NULL) | |
2467 | return 0; | |
2468 | ||
2469 | /* Determine glink PLT resolver by reading the relative branch | |
2470 | from the first glink stub. */ | |
2471 | if (bfd_get_section_contents (abfd, glink, buf, | |
2472 | glink_vma - glink->vma, 4)) | |
2473 | { | |
2474 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2475 | ||
2476 | /* The first glink stub may either branch to the resolver ... */ | |
2477 | insn ^= B; | |
2478 | if ((insn & ~0x3fffffc) == 0) | |
2479 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
2480 | ||
2481 | /* ... or fall through a bunch of NOPs. */ | |
2482 | else if ((insn ^ B ^ NOP) == 0) | |
2483 | for (i = 4; | |
2484 | bfd_get_section_contents (abfd, glink, buf, | |
2485 | glink_vma - glink->vma + i, 4); | |
2486 | i += 4) | |
2487 | if (bfd_get_32 (abfd, buf) != NOP) | |
2488 | { | |
2489 | resolv_vma = glink_vma + i; | |
2490 | break; | |
2491 | } | |
2492 | } | |
2493 | ||
7382d32a AM |
2494 | count = relplt->size / sizeof (Elf32_External_Rela); |
2495 | stub_vma = glink_vma - (bfd_vma) count * 16; | |
2496 | /* If the stubs are those for -shared/-pie then we might have | |
2497 | multiple stubs for each plt entry. If that is the case then | |
2498 | there is no way to associate stubs with their plt entries short | |
2499 | of figuring out the GOT pointer value used in the stub. */ | |
c6dd29ce AM |
2500 | if (!is_nonpic_glink_stub (abfd, glink, |
2501 | glink_vma - GLINK_ENTRY_SIZE - glink->vma)) | |
7382d32a AM |
2502 | return 0; |
2503 | ||
468392fb AM |
2504 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
2505 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
2506 | return -1; | |
2507 | ||
468392fb AM |
2508 | size = count * sizeof (asymbol); |
2509 | p = relplt->relocation; | |
2510 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
2511 | { |
2512 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2513 | if (p->addend != 0) | |
2514 | size += sizeof ("+0x") - 1 + 8; | |
2515 | } | |
468392fb AM |
2516 | |
2517 | size += sizeof (asymbol) + sizeof ("__glink"); | |
2518 | ||
2519 | if (resolv_vma) | |
2520 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
2521 | ||
2522 | s = *ret = bfd_malloc (size); | |
2523 | if (s == NULL) | |
2524 | return -1; | |
2525 | ||
2526 | names = (char *) (s + count + 1 + (resolv_vma != 0)); | |
2527 | p = relplt->relocation; | |
2528 | for (i = 0; i < count; i++, p++) | |
2529 | { | |
2530 | size_t len; | |
2531 | ||
2532 | *s = **p->sym_ptr_ptr; | |
2533 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2534 | we are defining a symbol, ensure one of them is set. */ | |
2535 | if ((s->flags & BSF_LOCAL) == 0) | |
2536 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2537 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2538 | s->section = glink; |
2539 | s->value = stub_vma - glink->vma; | |
2540 | s->name = names; | |
2541 | s->udata.p = NULL; | |
2542 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2543 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2544 | names += len; | |
e054468f AM |
2545 | if (p->addend != 0) |
2546 | { | |
2547 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2548 | names += sizeof ("+0x") - 1; | |
2549 | bfd_sprintf_vma (abfd, names, p->addend); | |
2550 | names += strlen (names); | |
2551 | } | |
468392fb AM |
2552 | memcpy (names, "@plt", sizeof ("@plt")); |
2553 | names += sizeof ("@plt"); | |
2554 | ++s; | |
2555 | stub_vma += 16; | |
2556 | } | |
2557 | ||
2558 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 2559 | memset (s, 0, sizeof *s); |
468392fb | 2560 | s->the_bfd = abfd; |
6ba2a415 | 2561 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2562 | s->section = glink; |
2563 | s->value = glink_vma - glink->vma; | |
2564 | s->name = names; | |
2565 | memcpy (names, "__glink", sizeof ("__glink")); | |
2566 | names += sizeof ("__glink"); | |
2567 | s++; | |
2568 | count++; | |
2569 | ||
2570 | if (resolv_vma) | |
2571 | { | |
2572 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 2573 | memset (s, 0, sizeof *s); |
468392fb | 2574 | s->the_bfd = abfd; |
6ba2a415 | 2575 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2576 | s->section = glink; |
2577 | s->value = resolv_vma - glink->vma; | |
2578 | s->name = names; | |
2579 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
2580 | names += sizeof ("__glink_PLTresolve"); | |
2581 | s++; | |
2582 | count++; | |
2583 | } | |
2584 | ||
2585 | return count; | |
2586 | } | |
2587 | \f | |
25dbc73a AM |
2588 | /* The following functions are specific to the ELF linker, while |
2589 | functions above are used generally. They appear in this file more | |
2590 | or less in the order in which they are called. eg. | |
2591 | ppc_elf_check_relocs is called early in the link process, | |
2592 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2593 | called. */ | |
252b5132 | 2594 | |
25dbc73a AM |
2595 | /* The PPC linker needs to keep track of the number of relocs that it |
2596 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2597 | This is so that it can later discard them if they are found to be | |
2598 | unnecessary. We store the information in a field extending the | |
2599 | regular ELF linker hash table. */ | |
ae9a127f | 2600 | |
25dbc73a | 2601 | struct ppc_elf_dyn_relocs |
252b5132 | 2602 | { |
25dbc73a | 2603 | struct ppc_elf_dyn_relocs *next; |
252b5132 | 2604 | |
25dbc73a AM |
2605 | /* The input section of the reloc. */ |
2606 | asection *sec; | |
252b5132 | 2607 | |
25dbc73a AM |
2608 | /* Total number of relocs copied for the input section. */ |
2609 | bfd_size_type count; | |
252b5132 | 2610 | |
25dbc73a AM |
2611 | /* Number of pc-relative relocs copied for the input section. */ |
2612 | bfd_size_type pc_count; | |
2613 | }; | |
252b5132 | 2614 | |
a6aa5195 | 2615 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 2616 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
2617 | struct plt_entry |
2618 | { | |
2619 | struct plt_entry *next; | |
2620 | ||
2621 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2622 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
2623 | GOT pointer reg. It will always be at least 32768. (Current |
2624 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
2625 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
2626 | bfd_vma addend; |
2627 | ||
2628 | /* The .got2 section. */ | |
2629 | asection *sec; | |
2630 | ||
2631 | /* PLT refcount or offset. */ | |
2632 | union | |
2633 | { | |
2634 | bfd_signed_vma refcount; | |
2635 | bfd_vma offset; | |
2636 | } plt; | |
2637 | ||
2638 | /* .glink stub offset. */ | |
2639 | bfd_vma glink_offset; | |
2640 | }; | |
2641 | ||
1d483afe | 2642 | /* Of those relocs that might be copied as dynamic relocs, this function |
25dbc73a AM |
2643 | selects those that must be copied when linking a shared library, |
2644 | even when the symbol is local. */ | |
252b5132 | 2645 | |
1d483afe AM |
2646 | static int |
2647 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2648 | enum elf_ppc_reloc_type r_type) | |
2649 | { | |
2650 | switch (r_type) | |
2651 | { | |
2652 | default: | |
2653 | return 1; | |
2654 | ||
2655 | case R_PPC_REL24: | |
2656 | case R_PPC_REL14: | |
2657 | case R_PPC_REL14_BRTAKEN: | |
2658 | case R_PPC_REL14_BRNTAKEN: | |
2659 | case R_PPC_REL32: | |
2660 | return 0; | |
2661 | ||
2662 | case R_PPC_TPREL32: | |
2663 | case R_PPC_TPREL16: | |
2664 | case R_PPC_TPREL16_LO: | |
2665 | case R_PPC_TPREL16_HI: | |
2666 | case R_PPC_TPREL16_HA: | |
2667 | return !info->executable; | |
2668 | } | |
2669 | } | |
252b5132 | 2670 | |
25dbc73a AM |
2671 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2672 | copying dynamic variables from a shared lib into an app's dynbss | |
2673 | section, and instead use a dynamic relocation to point into the | |
2674 | shared lib. */ | |
2675 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2676 | |
25dbc73a | 2677 | /* PPC ELF linker hash entry. */ |
252b5132 | 2678 | |
25dbc73a AM |
2679 | struct ppc_elf_link_hash_entry |
2680 | { | |
2681 | struct elf_link_hash_entry elf; | |
252b5132 | 2682 | |
25dbc73a AM |
2683 | /* If this symbol is used in the linker created sections, the processor |
2684 | specific backend uses this field to map the field into the offset | |
2685 | from the beginning of the section. */ | |
2686 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2687 | |
25dbc73a AM |
2688 | /* Track dynamic relocs copied for this symbol. */ |
2689 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
252b5132 | 2690 | |
25dbc73a AM |
2691 | /* Contexts in which symbol is used in the GOT (or TOC). |
2692 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
2693 | corresponding relocs are encountered during check_relocs. | |
2694 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2695 | indicate the corresponding GOT entry type is not needed. */ | |
2696 | #define TLS_GD 1 /* GD reloc. */ | |
2697 | #define TLS_LD 2 /* LD reloc. */ | |
2698 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2699 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2700 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2701 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 2702 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 2703 | char tls_mask; |
4dc4a9a5 DJ |
2704 | |
2705 | /* Nonzero if we have seen a small data relocation referring to this | |
2706 | symbol. */ | |
2707 | unsigned char has_sda_refs; | |
25dbc73a | 2708 | }; |
252b5132 | 2709 | |
25dbc73a AM |
2710 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2711 | ||
2712 | /* PPC ELF linker hash table. */ | |
2713 | ||
2714 | struct ppc_elf_link_hash_table | |
2715 | { | |
2716 | struct elf_link_hash_table elf; | |
2717 | ||
2718 | /* Short-cuts to get to dynamic linker sections. */ | |
2719 | asection *got; | |
2720 | asection *relgot; | |
d7128ce4 | 2721 | asection *glink; |
25dbc73a AM |
2722 | asection *plt; |
2723 | asection *relplt; | |
e054468f AM |
2724 | asection *iplt; |
2725 | asection *reliplt; | |
25dbc73a AM |
2726 | asection *dynbss; |
2727 | asection *relbss; | |
2728 | asection *dynsbss; | |
2729 | asection *relsbss; | |
c9a2f333 | 2730 | elf_linker_section_t sdata[2]; |
25dbc73a AM |
2731 | asection *sbss; |
2732 | ||
016687f8 AM |
2733 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
2734 | asection *srelplt2; | |
2735 | ||
2736 | /* The .got.plt section (VxWorks only)*/ | |
2737 | asection *sgotplt; | |
2738 | ||
1d483afe | 2739 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 2740 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 2741 | |
016687f8 AM |
2742 | /* The bfd that forced an old-style PLT. */ |
2743 | bfd *old_bfd; | |
2744 | ||
25dbc73a AM |
2745 | /* TLS local dynamic got entry handling. */ |
2746 | union { | |
2747 | bfd_signed_vma refcount; | |
2748 | bfd_vma offset; | |
2749 | } tlsld_got; | |
252b5132 | 2750 | |
c6dd29ce | 2751 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
2752 | bfd_vma glink_pltresolve; |
2753 | ||
3b36f7e6 AM |
2754 | /* Size of reserved GOT entries. */ |
2755 | unsigned int got_header_size; | |
2756 | /* Non-zero if allocating the header left a gap. */ | |
2757 | unsigned int got_gap; | |
2758 | ||
4a3dc543 RS |
2759 | /* The type of PLT we have chosen to use. */ |
2760 | enum ppc_elf_plt_type plt_type; | |
2761 | ||
0ba07910 AM |
2762 | /* Set if we should emit symbols for stubs. */ |
2763 | unsigned int emit_stub_syms:1; | |
2764 | ||
a7f2871e AM |
2765 | /* Set if __tls_get_addr optimization should not be done. */ |
2766 | unsigned int no_tls_get_addr_opt:1; | |
2767 | ||
9d8504b1 | 2768 | /* True if the target system is VxWorks. */ |
016687f8 | 2769 | unsigned int is_vxworks:1; |
9d8504b1 PB |
2770 | |
2771 | /* The size of PLT entries. */ | |
2772 | int plt_entry_size; | |
2773 | /* The distance between adjacent PLT slots. */ | |
2774 | int plt_slot_size; | |
2775 | /* The size of the first PLT entry. */ | |
2776 | int plt_initial_entry_size; | |
016687f8 | 2777 | |
87d72d41 AM |
2778 | /* Small local sym cache. */ |
2779 | struct sym_cache sym_cache; | |
25dbc73a | 2780 | }; |
252b5132 | 2781 | |
25dbc73a | 2782 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2783 | |
25dbc73a AM |
2784 | #define ppc_elf_hash_table(p) \ |
2785 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
252b5132 | 2786 | |
25dbc73a | 2787 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2788 | |
25dbc73a AM |
2789 | static struct bfd_hash_entry * |
2790 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2791 | struct bfd_hash_table *table, | |
2792 | const char *string) | |
252b5132 | 2793 | { |
25dbc73a AM |
2794 | /* Allocate the structure if it has not already been allocated by a |
2795 | subclass. */ | |
2796 | if (entry == NULL) | |
2797 | { | |
2798 | entry = bfd_hash_allocate (table, | |
2799 | sizeof (struct ppc_elf_link_hash_entry)); | |
2800 | if (entry == NULL) | |
2801 | return entry; | |
2802 | } | |
252b5132 | 2803 | |
25dbc73a AM |
2804 | /* Call the allocation method of the superclass. */ |
2805 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2806 | if (entry != NULL) | |
2807 | { | |
2808 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2809 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2810 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
2811 | } | |
252b5132 | 2812 | |
25dbc73a | 2813 | return entry; |
252b5132 | 2814 | } |
3dab13f6 | 2815 | |
25dbc73a | 2816 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2817 | |
25dbc73a AM |
2818 | static struct bfd_link_hash_table * |
2819 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2820 | { |
25dbc73a | 2821 | struct ppc_elf_link_hash_table *ret; |
3dab13f6 | 2822 | |
25dbc73a AM |
2823 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2824 | if (ret == NULL) | |
2825 | return NULL; | |
3dab13f6 | 2826 | |
66eb6687 AM |
2827 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2828 | ppc_elf_link_hash_newfunc, | |
2829 | sizeof (struct ppc_elf_link_hash_entry))) | |
3dab13f6 | 2830 | { |
25dbc73a AM |
2831 | free (ret); |
2832 | return NULL; | |
2833 | } | |
58111eb7 | 2834 | |
a6aa5195 AM |
2835 | ret->elf.init_plt_refcount.refcount = 0; |
2836 | ret->elf.init_plt_refcount.glist = NULL; | |
2837 | ret->elf.init_plt_offset.offset = 0; | |
2838 | ret->elf.init_plt_offset.glist = NULL; | |
2839 | ||
c9a2f333 AM |
2840 | ret->sdata[0].name = ".sdata"; |
2841 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2842 | ret->sdata[0].bss_name = ".sbss"; | |
2843 | ||
2844 | ret->sdata[1].name = ".sdata2"; | |
2845 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2846 | ret->sdata[1].bss_name = ".sbss2"; | |
2847 | ||
9d8504b1 PB |
2848 | ret->plt_entry_size = 12; |
2849 | ret->plt_slot_size = 8; | |
2850 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 2851 | |
25dbc73a AM |
2852 | return &ret->elf.root; |
2853 | } | |
3dab13f6 | 2854 | |
9d8504b1 | 2855 | /* Create .got and the related sections. */ |
3dab13f6 | 2856 | |
25dbc73a AM |
2857 | static bfd_boolean |
2858 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2859 | { | |
2860 | struct ppc_elf_link_hash_table *htab; | |
2861 | asection *s; | |
2862 | flagword flags; | |
3dab13f6 | 2863 | |
25dbc73a AM |
2864 | if (!_bfd_elf_create_got_section (abfd, info)) |
2865 | return FALSE; | |
3dab13f6 | 2866 | |
25dbc73a AM |
2867 | htab = ppc_elf_hash_table (info); |
2868 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
2869 | if (s == NULL) | |
2870 | abort (); | |
3dab13f6 | 2871 | |
9d8504b1 PB |
2872 | if (htab->is_vxworks) |
2873 | { | |
2874 | htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt"); | |
2875 | if (!htab->sgotplt) | |
2876 | abort (); | |
2877 | } | |
2878 | else | |
2879 | { | |
2880 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2881 | executable. */ | |
2882 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
2883 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2884 | if (!bfd_set_section_flags (abfd, s, flags)) | |
2885 | return FALSE; | |
2886 | } | |
3dab13f6 | 2887 | |
64e77c6d L |
2888 | htab->relgot = bfd_get_section_by_name (abfd, ".rela.got"); |
2889 | if (!htab->relgot) | |
2890 | abort (); | |
3dab13f6 | 2891 | |
25dbc73a AM |
2892 | return TRUE; |
2893 | } | |
3dab13f6 | 2894 | |
e054468f AM |
2895 | static bfd_boolean |
2896 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
2897 | { | |
2898 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
2899 | asection *s; | |
2900 | flagword flags; | |
2901 | ||
2902 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
2903 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2904 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
2905 | htab->glink = s; | |
2906 | if (s == NULL | |
2907 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2908 | return FALSE; | |
2909 | ||
2910 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
2911 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
2912 | htab->iplt = s; | |
2913 | if (s == NULL | |
2914 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2915 | return FALSE; | |
2916 | ||
2917 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
2918 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2919 | s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags); | |
2920 | htab->reliplt = s; | |
2921 | if (s == NULL | |
2922 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
2923 | return FALSE; | |
2924 | return TRUE; | |
2925 | } | |
2926 | ||
25dbc73a AM |
2927 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2928 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2929 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2930 | |
25dbc73a AM |
2931 | static bfd_boolean |
2932 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2933 | { | |
2934 | struct ppc_elf_link_hash_table *htab; | |
2935 | asection *s; | |
2936 | flagword flags; | |
3dab13f6 | 2937 | |
25dbc73a | 2938 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2939 | |
25dbc73a AM |
2940 | if (htab->got == NULL |
2941 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
2942 | return FALSE; |
2943 | ||
25dbc73a AM |
2944 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2945 | return FALSE; | |
3dab13f6 | 2946 | |
e054468f AM |
2947 | if (htab->glink == NULL |
2948 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 2949 | return FALSE; |
3dab13f6 | 2950 | |
25dbc73a | 2951 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
3b36f7e6 AM |
2952 | s = bfd_make_section_with_flags (abfd, ".dynsbss", |
2953 | SEC_ALLOC | SEC_LINKER_CREATED); | |
2954 | htab->dynsbss = s; | |
3496cb2a | 2955 | if (s == NULL) |
25dbc73a | 2956 | return FALSE; |
3dab13f6 | 2957 | |
25dbc73a AM |
2958 | if (! info->shared) |
2959 | { | |
2960 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
e054468f AM |
2961 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2962 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
d7128ce4 | 2963 | s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2964 | htab->relsbss = s; |
25dbc73a | 2965 | if (s == NULL |
25dbc73a AM |
2966 | || ! bfd_set_section_alignment (abfd, s, 2)) |
2967 | return FALSE; | |
2968 | } | |
3dab13f6 | 2969 | |
711de32c RS |
2970 | if (htab->is_vxworks |
2971 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
2972 | return FALSE; | |
9d8504b1 | 2973 | |
25dbc73a AM |
2974 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2975 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
2976 | if (s == NULL) | |
2977 | abort (); | |
3dab13f6 | 2978 | |
3b36f7e6 | 2979 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
2980 | if (htab->plt_type == PLT_VXWORKS) |
2981 | /* The VxWorks PLT is a loaded section with contents. */ | |
2982 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
2983 | return bfd_set_section_flags (abfd, s, flags); |
2984 | } | |
3dab13f6 | 2985 | |
25dbc73a | 2986 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2987 | |
25dbc73a | 2988 | static void |
fcfa13d2 | 2989 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2990 | struct elf_link_hash_entry *dir, |
2991 | struct elf_link_hash_entry *ind) | |
2992 | { | |
2993 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2994 | |
25dbc73a AM |
2995 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2996 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2997 | |
25dbc73a AM |
2998 | if (eind->dyn_relocs != NULL) |
2999 | { | |
3000 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3001 | { |
25dbc73a AM |
3002 | struct ppc_elf_dyn_relocs **pp; |
3003 | struct ppc_elf_dyn_relocs *p; | |
3dab13f6 | 3004 | |
fcfa13d2 | 3005 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3006 | list. Merge any entries against the same section. */ |
3007 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3008 | { |
25dbc73a AM |
3009 | struct ppc_elf_dyn_relocs *q; |
3010 | ||
3011 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3012 | if (q->sec == p->sec) | |
3013 | { | |
3014 | q->pc_count += p->pc_count; | |
3015 | q->count += p->count; | |
3016 | *pp = p->next; | |
3017 | break; | |
3018 | } | |
3019 | if (q == NULL) | |
3020 | pp = &p->next; | |
3dab13f6 | 3021 | } |
25dbc73a | 3022 | *pp = edir->dyn_relocs; |
3dab13f6 | 3023 | } |
25dbc73a AM |
3024 | |
3025 | edir->dyn_relocs = eind->dyn_relocs; | |
3026 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3027 | } |
3dab13f6 | 3028 | |
25dbc73a | 3029 | edir->tls_mask |= eind->tls_mask; |
4dc4a9a5 | 3030 | edir->has_sda_refs |= eind->has_sda_refs; |
3dab13f6 | 3031 | |
a6aa5195 AM |
3032 | /* If called to transfer flags for a weakdef during processing |
3033 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
3034 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3035 | if (!(ELIMINATE_COPY_RELOCS | |
3036 | && eind->elf.root.type != bfd_link_hash_indirect | |
3037 | && edir->elf.dynamic_adjusted)) | |
3038 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
3039 | ||
3040 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
3041 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3042 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3043 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
0eb4a168 | 3044 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
a6aa5195 AM |
3045 | |
3046 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3047 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3048 | return; | |
3049 | ||
3050 | /* Copy over the GOT refcount entries that we may have already seen to | |
3051 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3052 | edir->elf.got.refcount += eind->elf.got.refcount; |
3053 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3054 | |
3055 | /* And plt entries. */ | |
3056 | if (eind->elf.plt.plist != NULL) | |
3057 | { | |
3058 | if (edir->elf.plt.plist != NULL) | |
3059 | { | |
3060 | struct plt_entry **entp; | |
3061 | struct plt_entry *ent; | |
3062 | ||
3063 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3064 | { | |
3065 | struct plt_entry *dent; | |
3066 | ||
3067 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3068 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3069 | { | |
3070 | dent->plt.refcount += ent->plt.refcount; | |
3071 | *entp = ent->next; | |
3072 | break; | |
3073 | } | |
3074 | if (dent == NULL) | |
3075 | entp = &ent->next; | |
3076 | } | |
3077 | *entp = edir->elf.plt.plist; | |
3078 | } | |
3079 | ||
3080 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3081 | eind->elf.plt.plist = NULL; | |
3082 | } | |
3083 | ||
fcfa13d2 | 3084 | if (eind->elf.dynindx != -1) |
25dbc73a | 3085 | { |
fcfa13d2 AM |
3086 | if (edir->elf.dynindx != -1) |
3087 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3088 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3089 | edir->elf.dynindx = eind->elf.dynindx; |
3090 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3091 | eind->elf.dynindx = -1; | |
3092 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3093 | } |
25dbc73a | 3094 | } |
3dab13f6 | 3095 | |
25dbc73a AM |
3096 | /* Hook called by the linker routine which adds symbols from an object |
3097 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3098 | |
25dbc73a AM |
3099 | static bfd_boolean |
3100 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3101 | struct bfd_link_info *info, | |
3102 | Elf_Internal_Sym *sym, | |
3103 | const char **namep ATTRIBUTE_UNUSED, | |
3104 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3105 | asection **secp, | |
3106 | bfd_vma *valp) | |
3107 | { | |
3108 | if (sym->st_shndx == SHN_COMMON | |
3109 | && !info->relocatable | |
0c8d6e5c AM |
3110 | && is_ppc_elf (info->output_bfd) |
3111 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3112 | { |
3113 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3114 | put into .sbss. */ | |
3115 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3116 | |
25dbc73a AM |
3117 | htab = ppc_elf_hash_table (info); |
3118 | if (htab->sbss == NULL) | |
3119 | { | |
644285ef | 3120 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3121 | |
644285ef AM |
3122 | if (!htab->elf.dynobj) |
3123 | htab->elf.dynobj = abfd; | |
3124 | ||
3496cb2a L |
3125 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3126 | ".sbss", | |
3127 | flags); | |
3128 | if (htab->sbss == NULL) | |
25dbc73a | 3129 | return FALSE; |
3dab13f6 | 3130 | } |
3dab13f6 | 3131 | |
25dbc73a AM |
3132 | *secp = htab->sbss; |
3133 | *valp = sym->st_size; | |
3134 | } | |
3dab13f6 | 3135 | |
e054468f AM |
3136 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
3137 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
3138 | ||
25dbc73a | 3139 | return TRUE; |
3dab13f6 AM |
3140 | } |
3141 | \f | |
046183de | 3142 | static bfd_boolean |
bd6c6e2b | 3143 | create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect) |
046183de | 3144 | { |
bd6c6e2b AM |
3145 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
3146 | ||
046183de AM |
3147 | lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name, |
3148 | TRUE, FALSE, TRUE); | |
3149 | if (lsect->sym == NULL) | |
3150 | return FALSE; | |
3151 | if (lsect->sym->root.type == bfd_link_hash_new) | |
3152 | lsect->sym->non_elf = 0; | |
3153 | lsect->sym->ref_regular = 1; | |
bd6c6e2b | 3154 | _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE); |
046183de AM |
3155 | return TRUE; |
3156 | } | |
3157 | ||
c9a2f333 | 3158 | /* Create a special linker section. */ |
25dbc73a | 3159 | |
c9a2f333 | 3160 | static bfd_boolean |
55fd94b0 AM |
3161 | ppc_elf_create_linker_section (bfd *abfd, |
3162 | struct bfd_link_info *info, | |
c9a2f333 AM |
3163 | flagword flags, |
3164 | elf_linker_section_t *lsect) | |
252b5132 | 3165 | { |
58111eb7 | 3166 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
c9a2f333 | 3167 | asection *s; |
58111eb7 | 3168 | |
c9a2f333 AM |
3169 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3170 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
3171 | |
3172 | /* Record the first bfd that needs the special sections. */ | |
3173 | if (!htab->elf.dynobj) | |
3174 | htab->elf.dynobj = abfd; | |
3175 | ||
3496cb2a L |
3176 | s = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3177 | lsect->name, | |
3178 | flags); | |
76750a2f | 3179 | if (s == NULL |
76750a2f | 3180 | || !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) |
c9a2f333 | 3181 | return FALSE; |
76750a2f | 3182 | lsect->section = s; |
58111eb7 | 3183 | |
bd6c6e2b | 3184 | return create_sdata_sym (info, lsect); |
252b5132 | 3185 | } |
252b5132 | 3186 | |
25dbc73a AM |
3187 | /* Find a linker generated pointer with a given addend and type. */ |
3188 | ||
3189 | static elf_linker_section_pointers_t * | |
3190 | elf_find_pointer_linker_section | |
3191 | (elf_linker_section_pointers_t *linker_pointers, | |
3192 | bfd_vma addend, | |
3193 | elf_linker_section_t *lsect) | |
252b5132 | 3194 | { |
25dbc73a AM |
3195 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3196 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3197 | return linker_pointers; | |
252b5132 | 3198 | |
25dbc73a AM |
3199 | return NULL; |
3200 | } | |
3201 | ||
3202 | /* Allocate a pointer to live in a linker created section. */ | |
3203 | ||
3204 | static bfd_boolean | |
3205 | elf_create_pointer_linker_section (bfd *abfd, | |
25dbc73a AM |
3206 | elf_linker_section_t *lsect, |
3207 | struct elf_link_hash_entry *h, | |
3208 | const Elf_Internal_Rela *rel) | |
3209 | { | |
3210 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3211 | elf_linker_section_pointers_t *linker_section_ptr; | |
3212 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3213 | bfd_size_type amt; | |
3214 | ||
3215 | BFD_ASSERT (lsect != NULL); | |
3216 | ||
3217 | /* Is this a global symbol? */ | |
3218 | if (h != NULL) | |
3219 | { | |
3220 | struct ppc_elf_link_hash_entry *eh; | |
3221 | ||
3222 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3223 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3224 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3225 | rel->r_addend, | |
3226 | lsect)) | |
3227 | return TRUE; | |
3228 | ||
3229 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3230 | } |
3231 | else | |
3232 | { | |
0c8d6e5c | 3233 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3234 | |
25dbc73a AM |
3235 | /* Allocation of a pointer to a local symbol. */ |
3236 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3237 | ||
3238 | /* Allocate a table to hold the local symbols if first time. */ | |
3239 | if (!ptr) | |
3240 | { | |
0ffa91dd | 3241 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3242 | |
3243 | amt = num_symbols; | |
3244 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3245 | ptr = bfd_zalloc (abfd, amt); | |
3246 | ||
3247 | if (!ptr) | |
3248 | return FALSE; | |
3249 | ||
3250 | elf_local_ptr_offsets (abfd) = ptr; | |
3251 | } | |
3252 | ||
3253 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3254 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3255 | rel->r_addend, | |
3256 | lsect)) | |
3257 | return TRUE; | |
252b5132 | 3258 | |
25dbc73a | 3259 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3260 | } |
41fcb14e | 3261 | |
25dbc73a AM |
3262 | /* Allocate space for a pointer in the linker section, and allocate |
3263 | a new pointer record from internal memory. */ | |
3264 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3265 | amt = sizeof (elf_linker_section_pointers_t); | |
3266 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3267 | |
25dbc73a | 3268 | if (!linker_section_ptr) |
7619e7c7 | 3269 | return FALSE; |
41fcb14e | 3270 | |
25dbc73a AM |
3271 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3272 | linker_section_ptr->addend = rel->r_addend; | |
3273 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3274 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3275 | |
25dbc73a AM |
3276 | linker_section_ptr->offset = lsect->section->size; |
3277 | lsect->section->size += 4; | |
7619e7c7 | 3278 | |
25dbc73a AM |
3279 | #ifdef DEBUG |
3280 | fprintf (stderr, | |
3281 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3282 | lsect->name, (long) linker_section_ptr->offset, | |
3283 | (long) lsect->section->size); | |
3284 | #endif | |
7619e7c7 AM |
3285 | |
3286 | return TRUE; | |
41fcb14e AM |
3287 | } |
3288 | ||
e054468f | 3289 | static struct plt_entry ** |
25dbc73a AM |
3290 | update_local_sym_info (bfd *abfd, |
3291 | Elf_Internal_Shdr *symtab_hdr, | |
3292 | unsigned long r_symndx, | |
3293 | int tls_type) | |
252b5132 | 3294 | { |
25dbc73a | 3295 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3296 | struct plt_entry **local_plt; |
25dbc73a | 3297 | char *local_got_tls_masks; |
252b5132 | 3298 | |
25dbc73a | 3299 | if (local_got_refcounts == NULL) |
252b5132 | 3300 | { |
25dbc73a AM |
3301 | bfd_size_type size = symtab_hdr->sh_info; |
3302 | ||
e054468f AM |
3303 | size *= (sizeof (*local_got_refcounts) |
3304 | + sizeof (*local_plt) | |
3305 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3306 | local_got_refcounts = bfd_zalloc (abfd, size); |
3307 | if (local_got_refcounts == NULL) | |
e054468f | 3308 | return NULL; |
25dbc73a | 3309 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3310 | } |
41fcb14e | 3311 | |
e054468f AM |
3312 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3313 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3314 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3315 | if (tls_type != PLT_IFUNC) |
3316 | local_got_refcounts[r_symndx] += 1; | |
3317 | return local_plt + r_symndx; | |
25dbc73a | 3318 | } |
41fcb14e | 3319 | |
a6aa5195 | 3320 | static bfd_boolean |
3ec01793 | 3321 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3322 | asection *sec, bfd_vma addend) |
3323 | { | |
3324 | struct plt_entry *ent; | |
3325 | ||
3ec01793 | 3326 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3327 | if (ent->sec == sec && ent->addend == addend) |
3328 | break; | |
3329 | if (ent == NULL) | |
3330 | { | |
3331 | bfd_size_type amt = sizeof (*ent); | |
3332 | ent = bfd_alloc (abfd, amt); | |
3333 | if (ent == NULL) | |
3334 | return FALSE; | |
3ec01793 | 3335 | ent->next = *plist; |
a6aa5195 AM |
3336 | ent->sec = sec; |
3337 | ent->addend = addend; | |
3338 | ent->plt.refcount = 0; | |
3ec01793 | 3339 | *plist = ent; |
a6aa5195 AM |
3340 | } |
3341 | ent->plt.refcount += 1; | |
3342 | return TRUE; | |
3343 | } | |
3344 | ||
3345 | static struct plt_entry * | |
3ec01793 | 3346 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3347 | { |
3348 | struct plt_entry *ent; | |
3349 | ||
3350 | if (addend < 32768) | |
3351 | sec = NULL; | |
3ec01793 | 3352 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3353 | if (ent->sec == sec && ent->addend == addend) |
3354 | break; | |
3355 | return ent; | |
3356 | } | |
3357 | ||
e054468f AM |
3358 | static bfd_boolean |
3359 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3360 | { | |
3361 | return (r_type == R_PPC_PLTREL24 | |
3362 | || r_type == R_PPC_LOCAL24PC | |
3363 | || r_type == R_PPC_REL24 | |
3364 | || r_type == R_PPC_REL14 | |
3365 | || r_type == R_PPC_REL14_BRTAKEN | |
3366 | || r_type == R_PPC_REL14_BRNTAKEN | |
3367 | || r_type == R_PPC_ADDR24 | |
3368 | || r_type == R_PPC_ADDR14 | |
3369 | || r_type == R_PPC_ADDR14_BRTAKEN | |
3370 | || r_type == R_PPC_ADDR14_BRNTAKEN); | |
3371 | } | |
3372 | ||
25dbc73a AM |
3373 | static void |
3374 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3375 | { | |
3376 | (*_bfd_error_handler) | |
3377 | (_("%B: relocation %s cannot be used when making a shared object"), | |
3378 | abfd, | |
3379 | ppc_elf_howto_table[r_type]->name); | |
3380 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3381 | } |
3382 | ||
25dbc73a AM |
3383 | /* Look through the relocs for a section during the first phase, and |
3384 | allocate space in the global offset table or procedure linkage | |
3385 | table. */ | |
252b5132 | 3386 | |
b34976b6 | 3387 | static bfd_boolean |
25dbc73a AM |
3388 | ppc_elf_check_relocs (bfd *abfd, |
3389 | struct bfd_link_info *info, | |
3390 | asection *sec, | |
3391 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3392 | { |
7619e7c7 | 3393 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3394 | Elf_Internal_Shdr *symtab_hdr; |
3395 | struct elf_link_hash_entry **sym_hashes; | |
3396 | const Elf_Internal_Rela *rel; | |
3397 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3398 | asection *got2, *sreloc; |
727fc41e | 3399 | struct elf_link_hash_entry *tga; |
25dbc73a AM |
3400 | |
3401 | if (info->relocatable) | |
3402 | return TRUE; | |
252b5132 | 3403 | |
c87b5a93 AM |
3404 | /* Don't do anything special with non-loaded, non-alloced sections. |
3405 | In particular, any relocs in such sections should not affect GOT | |
3406 | and PLT reference counting (ie. we don't allow them to create GOT | |
3407 | or PLT entries), there's no possibility or desire to optimize TLS | |
3408 | relocs, and there's not much point in propagating relocs to shared | |
3409 | libs that the dynamic linker won't relocate. */ | |
3410 | if ((sec->flags & SEC_ALLOC) == 0) | |
3411 | return TRUE; | |
3412 | ||
252b5132 | 3413 | #ifdef DEBUG |
25dbc73a AM |
3414 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3415 | sec, abfd); | |
252b5132 RH |
3416 | #endif |
3417 | ||
0c8d6e5c | 3418 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3419 | |
25dbc73a AM |
3420 | /* Initialize howto table if not already done. */ |
3421 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3422 | ppc_elf_howto_init (); | |
3423 | ||
7619e7c7 | 3424 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3425 | if (htab->glink == NULL) |
3426 | { | |
3427 | if (htab->elf.dynobj == NULL) | |
3428 | htab->elf.dynobj = abfd; | |
3429 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3430 | return FALSE; | |
3431 | } | |
727fc41e AM |
3432 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3433 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3434 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3435 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3436 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3437 | sreloc = NULL; |
3438 | ||
3439 | rel_end = relocs + sec->reloc_count; | |
3440 | for (rel = relocs; rel < rel_end; rel++) | |
3441 | { | |
3442 | unsigned long r_symndx; | |
3443 | enum elf_ppc_reloc_type r_type; | |
3444 | struct elf_link_hash_entry *h; | |
727fc41e | 3445 | int tls_type; |
e054468f | 3446 | struct plt_entry **ifunc; |
25dbc73a AM |
3447 | |
3448 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3449 | if (r_symndx < symtab_hdr->sh_info) | |
3450 | h = NULL; | |
3451 | else | |
973a3492 L |
3452 | { |
3453 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3454 | while (h->root.type == bfd_link_hash_indirect | |
3455 | || h->root.type == bfd_link_hash_warning) | |
3456 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3457 | } | |
25dbc73a AM |
3458 | |
3459 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3460 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3461 | startup code. */ | |
3b36f7e6 AM |
3462 | if (h != NULL |
3463 | && htab->got == NULL | |
3464 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3465 | { |
3b36f7e6 AM |
3466 | if (htab->elf.dynobj == NULL) |
3467 | htab->elf.dynobj = abfd; | |
3468 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3469 | return FALSE; | |
3470 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3471 | } |
252b5132 | 3472 | |
727fc41e | 3473 | tls_type = 0; |
e054468f | 3474 | ifunc = NULL; |
de972ffa | 3475 | r_type = ELF32_R_TYPE (rel->r_info); |
25f23106 | 3476 | if (!htab->is_vxworks) |
e054468f | 3477 | { |
e054468f AM |
3478 | if (h != NULL) |
3479 | { | |
3480 | if (h->type == STT_GNU_IFUNC) | |
de972ffa | 3481 | ifunc = &h->plt.plist; |
e054468f AM |
3482 | } |
3483 | else | |
3484 | { | |
3485 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
3486 | abfd, r_symndx); | |
3487 | if (isym == NULL) | |
3488 | return FALSE; | |
3489 | ||
de972ffa AM |
3490 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
3491 | && (!info->shared | |
3492 | || is_branch_reloc (r_type))) | |
e054468f | 3493 | { |
de972ffa AM |
3494 | bfd_vma addend; |
3495 | ||
e054468f AM |
3496 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
3497 | PLT_IFUNC); | |
3498 | if (ifunc == NULL) | |
3499 | return FALSE; | |
de972ffa AM |
3500 | |
3501 | /* STT_GNU_IFUNC symbols must have a PLT entry; | |
3502 | In a non-pie executable even when there are | |
3503 | no plt calls. */ | |
3504 | addend = 0; | |
3505 | if (r_type == R_PPC_PLTREL24) | |
3506 | { | |
3507 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
a877a2b6 AM |
3508 | if (info->shared) |
3509 | addend = rel->r_addend; | |
de972ffa AM |
3510 | } |
3511 | if (!update_plt_info (abfd, ifunc, | |
3512 | addend < 32768 ? NULL : got2, addend)) | |
3513 | return FALSE; | |
e054468f AM |
3514 | } |
3515 | } | |
25f23106 AM |
3516 | } |
3517 | ||
de972ffa AM |
3518 | if (!htab->is_vxworks |
3519 | && is_branch_reloc (r_type) | |
3520 | && h != NULL | |
3521 | && h == tga) | |
25f23106 | 3522 | { |
de972ffa AM |
3523 | if (rel != relocs |
3524 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
3525 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
3526 | /* We have a new-style __tls_get_addr call with a marker | |
3527 | reloc. */ | |
3528 | ; | |
3529 | else | |
3530 | /* Mark this section as having an old-style call. */ | |
3531 | sec->has_tls_get_addr_call = 1; | |
e054468f | 3532 | } |
727fc41e | 3533 | |
25dbc73a AM |
3534 | switch (r_type) |
3535 | { | |
727fc41e AM |
3536 | case R_PPC_TLSGD: |
3537 | case R_PPC_TLSLD: | |
3538 | /* These special tls relocs tie a call to __tls_get_addr with | |
3539 | its parameter symbol. */ | |
3540 | break; | |
3541 | ||
25dbc73a AM |
3542 | case R_PPC_GOT_TLSLD16: |
3543 | case R_PPC_GOT_TLSLD16_LO: | |
3544 | case R_PPC_GOT_TLSLD16_HI: | |
3545 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
3546 | tls_type = TLS_TLS | TLS_LD; |
3547 | goto dogottls; | |
252b5132 | 3548 | |
25dbc73a AM |
3549 | case R_PPC_GOT_TLSGD16: |
3550 | case R_PPC_GOT_TLSGD16_LO: | |
3551 | case R_PPC_GOT_TLSGD16_HI: | |
3552 | case R_PPC_GOT_TLSGD16_HA: | |
3553 | tls_type = TLS_TLS | TLS_GD; | |
3554 | goto dogottls; | |
3555 | ||
3556 | case R_PPC_GOT_TPREL16: | |
3557 | case R_PPC_GOT_TPREL16_LO: | |
3558 | case R_PPC_GOT_TPREL16_HI: | |
3559 | case R_PPC_GOT_TPREL16_HA: | |
1d483afe | 3560 | if (!info->executable) |
25dbc73a AM |
3561 | info->flags |= DF_STATIC_TLS; |
3562 | tls_type = TLS_TLS | TLS_TPREL; | |
3563 | goto dogottls; | |
3564 | ||
3565 | case R_PPC_GOT_DTPREL16: | |
3566 | case R_PPC_GOT_DTPREL16_LO: | |
3567 | case R_PPC_GOT_DTPREL16_HI: | |
3568 | case R_PPC_GOT_DTPREL16_HA: | |
3569 | tls_type = TLS_TLS | TLS_DTPREL; | |
3570 | dogottls: | |
3571 | sec->has_tls_reloc = 1; | |
3572 | /* Fall thru */ | |
252b5132 | 3573 | |
25dbc73a AM |
3574 | /* GOT16 relocations */ |
3575 | case R_PPC_GOT16: | |
3576 | case R_PPC_GOT16_LO: | |
3577 | case R_PPC_GOT16_HI: | |
3578 | case R_PPC_GOT16_HA: | |
3579 | /* This symbol requires a global offset table entry. */ | |
3580 | if (htab->got == NULL) | |
3581 | { | |
3582 | if (htab->elf.dynobj == NULL) | |
3583 | htab->elf.dynobj = abfd; | |
3584 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3585 | return FALSE; | |
3586 | } | |
3587 | if (h != NULL) | |
3588 | { | |
3589 | h->got.refcount += 1; | |
3590 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3591 | } | |
3592 | else | |
3593 | /* This is a global offset table entry for a local symbol. */ | |
3594 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3595 | return FALSE; | |
91e21fb7 AM |
3596 | |
3597 | /* We may also need a plt entry if the symbol turns out to be | |
3598 | an ifunc. */ | |
3599 | if (h != NULL && !info->shared) | |
3600 | { | |
3601 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
3602 | return FALSE; | |
3603 | } | |
25dbc73a | 3604 | break; |
252b5132 | 3605 | |
25dbc73a AM |
3606 | /* Indirect .sdata relocation. */ |
3607 | case R_PPC_EMB_SDAI16: | |
3608 | if (info->shared) | |
3609 | { | |
3610 | bad_shared_reloc (abfd, r_type); | |
3611 | return FALSE; | |
3612 | } | |
c9a2f333 AM |
3613 | if (htab->sdata[0].section == NULL |
3614 | && !ppc_elf_create_linker_section (abfd, info, 0, | |
3615 | &htab->sdata[0])) | |
3616 | return FALSE; | |
76750a2f AM |
3617 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0], |
3618 | h, rel)) | |
25dbc73a | 3619 | return FALSE; |
046183de AM |
3620 | if (h != NULL) |
3621 | { | |
3622 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3623 | h->non_got_ref = TRUE; | |
3624 | } | |
25dbc73a | 3625 | break; |
252b5132 | 3626 | |
25dbc73a AM |
3627 | /* Indirect .sdata2 relocation. */ |
3628 | case R_PPC_EMB_SDA2I16: | |
3629 | if (info->shared) | |
3630 | { | |
3631 | bad_shared_reloc (abfd, r_type); | |
3632 | return FALSE; | |
3633 | } | |
c9a2f333 AM |
3634 | if (htab->sdata[1].section == NULL |
3635 | && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3636 | &htab->sdata[1])) | |
3637 | return FALSE; | |
76750a2f AM |
3638 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1], |
3639 | h, rel)) | |
25dbc73a | 3640 | return FALSE; |
046183de AM |
3641 | if (h != NULL) |
3642 | { | |
3643 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3644 | h->non_got_ref = TRUE; | |
3645 | } | |
25dbc73a | 3646 | break; |
252b5132 | 3647 | |
25dbc73a | 3648 | case R_PPC_SDAREL16: |
046183de | 3649 | if (htab->sdata[0].sym == NULL |
bd6c6e2b | 3650 | && !create_sdata_sym (info, &htab->sdata[0])) |
046183de AM |
3651 | return FALSE; |
3652 | if (h != NULL) | |
3653 | { | |
3654 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3655 | h->non_got_ref = TRUE; | |
3656 | } | |
3657 | break; | |
3658 | ||
25dbc73a | 3659 | case R_PPC_EMB_SDA2REL: |
046183de AM |
3660 | if (info->shared) |
3661 | { | |
3662 | bad_shared_reloc (abfd, r_type); | |
3663 | return FALSE; | |
3664 | } | |
3665 | if (htab->sdata[1].sym == NULL | |
bd6c6e2b | 3666 | && !create_sdata_sym (info, &htab->sdata[1])) |
046183de AM |
3667 | return FALSE; |
3668 | if (h != NULL) | |
3669 | { | |
3670 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3671 | h->non_got_ref = TRUE; | |
3672 | } | |
3673 | break; | |
3674 | ||
25dbc73a AM |
3675 | case R_PPC_EMB_SDA21: |
3676 | case R_PPC_EMB_RELSDA: | |
046183de AM |
3677 | if (info->shared) |
3678 | { | |
3679 | bad_shared_reloc (abfd, r_type); | |
3680 | return FALSE; | |
3681 | } | |
3682 | if (htab->sdata[0].sym == NULL | |
bd6c6e2b | 3683 | && !create_sdata_sym (info, &htab->sdata[0])) |
046183de AM |
3684 | return FALSE; |
3685 | if (htab->sdata[1].sym == NULL | |
bd6c6e2b | 3686 | && !create_sdata_sym (info, &htab->sdata[1])) |
046183de AM |
3687 | return FALSE; |
3688 | if (h != NULL) | |
3689 | { | |
3690 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3691 | h->non_got_ref = TRUE; | |
3692 | } | |
3693 | break; | |
3694 | ||
25dbc73a AM |
3695 | case R_PPC_EMB_NADDR32: |
3696 | case R_PPC_EMB_NADDR16: | |
3697 | case R_PPC_EMB_NADDR16_LO: | |
3698 | case R_PPC_EMB_NADDR16_HI: | |
3699 | case R_PPC_EMB_NADDR16_HA: | |
3700 | if (info->shared) | |
3701 | { | |
3702 | bad_shared_reloc (abfd, r_type); | |
3703 | return FALSE; | |
3704 | } | |
4dc4a9a5 | 3705 | if (h != NULL) |
046183de | 3706 | h->non_got_ref = TRUE; |
25dbc73a | 3707 | break; |
252b5132 | 3708 | |
25dbc73a | 3709 | case R_PPC_PLTREL24: |
de972ffa | 3710 | if (h == NULL) |
6d78d0b9 AM |
3711 | break; |
3712 | /* Fall through */ | |
3713 | case R_PPC_PLT32: | |
25dbc73a AM |
3714 | case R_PPC_PLTREL32: |
3715 | case R_PPC_PLT16_LO: | |
3716 | case R_PPC_PLT16_HI: | |
3717 | case R_PPC_PLT16_HA: | |
3718 | #ifdef DEBUG | |
3719 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3720 | #endif | |
3721 | /* This symbol requires a procedure linkage table entry. We | |
3722 | actually build the entry in finish_dynamic_symbol, | |
3723 | because this might be a case of linking PIC code without | |
3724 | linking in any dynamic objects, in which case we don't | |
3725 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 3726 | |
25dbc73a AM |
3727 | if (h == NULL) |
3728 | { | |
3729 | /* It does not make sense to have a procedure linkage | |
3730 | table entry for a local symbol. */ | |
3731 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " | |
3732 | "local symbol"), | |
3733 | abfd, | |
3734 | sec, | |
3735 | (long) rel->r_offset, | |
3736 | ppc_elf_howto_table[r_type]->name); | |
3737 | bfd_set_error (bfd_error_bad_value); | |
3738 | return FALSE; | |
3739 | } | |
a6aa5195 AM |
3740 | else |
3741 | { | |
016687f8 | 3742 | bfd_vma addend = 0; |
ee05f2fe | 3743 | |
016687f8 AM |
3744 | if (r_type == R_PPC_PLTREL24) |
3745 | { | |
3746 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
a877a2b6 AM |
3747 | if (info->shared) |
3748 | addend = rel->r_addend; | |
016687f8 | 3749 | } |
a6aa5195 | 3750 | h->needs_plt = 1; |
3ec01793 AM |
3751 | if (!update_plt_info (abfd, &h->plt.plist, |
3752 | addend < 32768 ? NULL : got2, addend)) | |
a6aa5195 AM |
3753 | return FALSE; |
3754 | } | |
25dbc73a | 3755 | break; |
ee05f2fe | 3756 | |
25dbc73a AM |
3757 | /* The following relocations don't need to propagate the |
3758 | relocation if linking a shared object since they are | |
3759 | section relative. */ | |
3760 | case R_PPC_SECTOFF: | |
3761 | case R_PPC_SECTOFF_LO: | |
3762 | case R_PPC_SECTOFF_HI: | |
3763 | case R_PPC_SECTOFF_HA: | |
3764 | case R_PPC_DTPREL16: | |
3765 | case R_PPC_DTPREL16_LO: | |
3766 | case R_PPC_DTPREL16_HI: | |
3767 | case R_PPC_DTPREL16_HA: | |
3768 | case R_PPC_TOC16: | |
3769 | break; | |
252b5132 | 3770 | |
d7128ce4 AM |
3771 | case R_PPC_REL16: |
3772 | case R_PPC_REL16_LO: | |
3773 | case R_PPC_REL16_HI: | |
3774 | case R_PPC_REL16_HA: | |
016687f8 | 3775 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
3776 | break; |
3777 | ||
a6aa5195 | 3778 | /* These are just markers. */ |
25dbc73a AM |
3779 | case R_PPC_TLS: |
3780 | case R_PPC_EMB_MRKREF: | |
3781 | case R_PPC_NONE: | |
3782 | case R_PPC_max: | |
ceaf50a2 AM |
3783 | case R_PPC_RELAX32: |
3784 | case R_PPC_RELAX32PC: | |
3785 | case R_PPC_RELAX32_PLT: | |
3786 | case R_PPC_RELAX32PC_PLT: | |
25dbc73a | 3787 | break; |
252b5132 | 3788 | |
25dbc73a AM |
3789 | /* These should only appear in dynamic objects. */ |
3790 | case R_PPC_COPY: | |
3791 | case R_PPC_GLOB_DAT: | |
3792 | case R_PPC_JMP_SLOT: | |
3793 | case R_PPC_RELATIVE: | |
e054468f | 3794 | case R_PPC_IRELATIVE: |
25dbc73a | 3795 | break; |
252b5132 | 3796 | |
25dbc73a AM |
3797 | /* These aren't handled yet. We'll report an error later. */ |
3798 | case R_PPC_ADDR30: | |
3799 | case R_PPC_EMB_RELSEC16: | |
3800 | case R_PPC_EMB_RELST_LO: | |
3801 | case R_PPC_EMB_RELST_HI: | |
3802 | case R_PPC_EMB_RELST_HA: | |
3803 | case R_PPC_EMB_BIT_FLD: | |
3804 | break; | |
252b5132 | 3805 | |
25dbc73a AM |
3806 | /* This refers only to functions defined in the shared library. */ |
3807 | case R_PPC_LOCAL24PC: | |
727fc41e | 3808 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
3809 | { |
3810 | htab->plt_type = PLT_OLD; | |
3811 | htab->old_bfd = abfd; | |
3812 | } | |
25dbc73a | 3813 | break; |
252b5132 | 3814 | |
25dbc73a AM |
3815 | /* This relocation describes the C++ object vtable hierarchy. |
3816 | Reconstruct it for later use during GC. */ | |
3817 | case R_PPC_GNU_VTINHERIT: | |
3818 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3819 | return FALSE; | |
3820 | break; | |
252b5132 | 3821 | |
25dbc73a AM |
3822 | /* This relocation describes which C++ vtable entries are actually |
3823 | used. Record for later use during GC. */ | |
3824 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
3825 | BFD_ASSERT (h != NULL); |
3826 | if (h != NULL | |
3827 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
3828 | return FALSE; |
3829 | break; | |
252b5132 | 3830 | |
25dbc73a AM |
3831 | /* We shouldn't really be seeing these. */ |
3832 | case R_PPC_TPREL32: | |
1d483afe AM |
3833 | case R_PPC_TPREL16: |
3834 | case R_PPC_TPREL16_LO: | |
3835 | case R_PPC_TPREL16_HI: | |
3836 | case R_PPC_TPREL16_HA: | |
3837 | if (!info->executable) | |
25dbc73a AM |
3838 | info->flags |= DF_STATIC_TLS; |
3839 | goto dodyn; | |
252b5132 | 3840 | |
25dbc73a AM |
3841 | /* Nor these. */ |
3842 | case R_PPC_DTPMOD32: | |
3843 | case R_PPC_DTPREL32: | |
3844 | goto dodyn; | |
252b5132 | 3845 | |
9edfd1af AM |
3846 | case R_PPC_REL32: |
3847 | if (h == NULL | |
3848 | && got2 != NULL | |
3849 | && (sec->flags & SEC_CODE) != 0 | |
a877a2b6 | 3850 | && info->shared |
4a3dc543 | 3851 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
3852 | { |
3853 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3854 | the start of a function, which assembles to a REL32 | |
3855 | reference to .got2. If we detect one of these, then | |
3856 | force the old PLT layout because the linker cannot | |
3857 | reliably deduce the GOT pointer value needed for | |
3858 | PLT call stubs. */ | |
3859 | asection *s; | |
87d72d41 | 3860 | Elf_Internal_Sym *isym; |
9edfd1af | 3861 | |
87d72d41 AM |
3862 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3863 | abfd, r_symndx); | |
3864 | if (isym == NULL) | |
3865 | return FALSE; | |
3866 | ||
3867 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 3868 | if (s == got2) |
016687f8 AM |
3869 | { |
3870 | htab->plt_type = PLT_OLD; | |
3871 | htab->old_bfd = abfd; | |
3872 | } | |
9edfd1af | 3873 | } |
7123df0e | 3874 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 3875 | break; |
625af618 AM |
3876 | /* fall through */ |
3877 | ||
3878 | case R_PPC_ADDR32: | |
3879 | case R_PPC_ADDR16: | |
3880 | case R_PPC_ADDR16_LO: | |
3881 | case R_PPC_ADDR16_HI: | |
3882 | case R_PPC_ADDR16_HA: | |
3883 | case R_PPC_UADDR32: | |
3884 | case R_PPC_UADDR16: | |
3885 | if (h != NULL && !info->shared) | |
3886 | { | |
3887 | /* We may need a plt entry if the symbol turns out to be | |
3888 | a function defined in a dynamic object. */ | |
3ec01793 | 3889 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
3890 | return FALSE; |
3891 | ||
3892 | /* We may need a copy reloc too. */ | |
3893 | h->non_got_ref = 1; | |
3894 | h->pointer_equality_needed = 1; | |
3895 | } | |
3896 | goto dodyn; | |
9edfd1af | 3897 | |
25dbc73a AM |
3898 | case R_PPC_REL24: |
3899 | case R_PPC_REL14: | |
3900 | case R_PPC_REL14_BRTAKEN: | |
3901 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3902 | if (h == NULL) |
25dbc73a | 3903 | break; |
7123df0e | 3904 | if (h == htab->elf.hgot) |
d7128ce4 | 3905 | { |
7123df0e | 3906 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
3907 | { |
3908 | htab->plt_type = PLT_OLD; | |
3909 | htab->old_bfd = abfd; | |
3910 | } | |
d7128ce4 AM |
3911 | break; |
3912 | } | |
25dbc73a | 3913 | /* fall through */ |
ee05f2fe | 3914 | |
25dbc73a | 3915 | case R_PPC_ADDR24: |
25dbc73a AM |
3916 | case R_PPC_ADDR14: |
3917 | case R_PPC_ADDR14_BRTAKEN: | |
3918 | case R_PPC_ADDR14_BRNTAKEN: | |
25dbc73a AM |
3919 | if (h != NULL && !info->shared) |
3920 | { | |
3921 | /* We may need a plt entry if the symbol turns out to be | |
3922 | a function defined in a dynamic object. */ | |
e054468f | 3923 | h->needs_plt = 1; |
de972ffa | 3924 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 3925 | return FALSE; |
625af618 | 3926 | break; |
25dbc73a | 3927 | } |
7619e7c7 | 3928 | |
25dbc73a AM |
3929 | dodyn: |
3930 | /* If we are creating a shared library, and this is a reloc | |
3931 | against a global symbol, or a non PC relative reloc | |
3932 | against a local symbol, then we need to copy the reloc | |
3933 | into the shared library. However, if we are linking with | |
3934 | -Bsymbolic, we do not need to copy a reloc against a | |
3935 | global symbol which is defined in an object we are | |
3936 | including in the link (i.e., DEF_REGULAR is set). At | |
3937 | this point we have not seen all the input files, so it is | |
3938 | possible that DEF_REGULAR is not set now but will be set | |
3939 | later (it is never cleared). In case of a weak definition, | |
3940 | DEF_REGULAR may be cleared later by a strong definition in | |
3941 | a shared library. We account for that possibility below by | |
3942 | storing information in the dyn_relocs field of the hash | |
3943 | table entry. A similar situation occurs when creating | |
3944 | shared libraries and symbol visibility changes render the | |
3945 | symbol local. | |
7619e7c7 | 3946 | |
25dbc73a AM |
3947 | If on the other hand, we are creating an executable, we |
3948 | may need to keep relocations for symbols satisfied by a | |
3949 | dynamic library if we manage to avoid copy relocs for the | |
3950 | symbol. */ | |
3951 | if ((info->shared | |
1d483afe | 3952 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a AM |
3953 | || (h != NULL |
3954 | && (! info->symbolic | |
3955 | || h->root.type == bfd_link_hash_defweak | |
3956 | || !h->def_regular)))) | |
3957 | || (ELIMINATE_COPY_RELOCS | |
3958 | && !info->shared | |
25dbc73a AM |
3959 | && h != NULL |
3960 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 3961 | || !h->def_regular))) |
25dbc73a AM |
3962 | { |
3963 | struct ppc_elf_dyn_relocs *p; | |
3964 | struct ppc_elf_dyn_relocs **head; | |
7619e7c7 | 3965 | |
25dbc73a AM |
3966 | #ifdef DEBUG |
3967 | fprintf (stderr, | |
3968 | "ppc_elf_check_relocs needs to " | |
3969 | "create relocation for %s\n", | |
3970 | (h && h->root.root.string | |
3971 | ? h->root.root.string : "<unknown>")); | |
3972 | #endif | |
3973 | if (sreloc == NULL) | |
3974 | { | |
c9a2f333 AM |
3975 | if (htab->elf.dynobj == NULL) |
3976 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
3977 | |
3978 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3979 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
3980 | ||
25dbc73a | 3981 | if (sreloc == NULL) |
83bac4b0 | 3982 | return FALSE; |
25dbc73a | 3983 | } |
7619e7c7 | 3984 | |
25dbc73a AM |
3985 | /* If this is a global symbol, we count the number of |
3986 | relocations we need for this symbol. */ | |
3987 | if (h != NULL) | |
3988 | { | |
3989 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
3990 | } | |
3991 | else | |
3992 | { | |
3993 | /* Track dynamic relocs needed for local syms too. | |
3994 | We really need local syms available to do this | |
3995 | easily. Oh well. */ | |
25dbc73a | 3996 | asection *s; |
6edfbbad | 3997 | void *vpp; |
87d72d41 | 3998 | Elf_Internal_Sym *isym; |
6edfbbad | 3999 | |
87d72d41 AM |
4000 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4001 | abfd, r_symndx); | |
4002 | if (isym == NULL) | |
25dbc73a | 4003 | return FALSE; |
7fce784e | 4004 | |
87d72d41 AM |
4005 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4006 | if (s == NULL) | |
4007 | s = sec; | |
4008 | ||
6edfbbad DJ |
4009 | vpp = &elf_section_data (s)->local_dynrel; |
4010 | head = (struct ppc_elf_dyn_relocs **) vpp; | |
25dbc73a | 4011 | } |
7fce784e | 4012 | |
25dbc73a AM |
4013 | p = *head; |
4014 | if (p == NULL || p->sec != sec) | |
4015 | { | |
4016 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4017 | if (p == NULL) | |
4018 | return FALSE; | |
4019 | p->next = *head; | |
4020 | *head = p; | |
4021 | p->sec = sec; | |
4022 | p->count = 0; | |
4023 | p->pc_count = 0; | |
4024 | } | |
4025 | ||
4026 | p->count += 1; | |
1d483afe | 4027 | if (!must_be_dyn_reloc (info, r_type)) |
25dbc73a | 4028 | p->pc_count += 1; |
7619e7c7 | 4029 | } |
25dbc73a AM |
4030 | |
4031 | break; | |
7619e7c7 AM |
4032 | } |
4033 | } | |
ee05f2fe | 4034 | |
25dbc73a AM |
4035 | return TRUE; |
4036 | } | |
4037 | \f | |
34c8bcba JM |
4038 | |
4039 | /* Merge object attributes from IBFD into OBFD. Raise an error if | |
4040 | there are conflicting attributes. */ | |
4041 | static bfd_boolean | |
4042 | ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
4043 | { | |
c6e65352 DJ |
4044 | obj_attribute *in_attr, *in_attrs; |
4045 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba JM |
4046 | |
4047 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
4048 | { | |
4049 | /* This is the first object. Copy the attributes. */ | |
4050 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
4051 | ||
4052 | /* Use the Tag_null value to indicate the attributes have been | |
4053 | initialized. */ | |
4054 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
4055 | ||
4056 | return TRUE; | |
4057 | } | |
4058 | ||
c6e65352 DJ |
4059 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4060 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4061 | ||
34c8bcba JM |
4062 | /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge |
4063 | non-conflicting ones. */ | |
c6e65352 DJ |
4064 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4065 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
4066 | if (in_attr->i != out_attr->i) | |
34c8bcba | 4067 | { |
c6e65352 DJ |
4068 | out_attr->type = 1; |
4069 | if (out_attr->i == 0) | |
4070 | out_attr->i = in_attr->i; | |
4071 | else if (in_attr->i == 0) | |
34c8bcba | 4072 | ; |
c6e65352 | 4073 | else if (out_attr->i == 1 && in_attr->i == 2) |
34c8bcba JM |
4074 | _bfd_error_handler |
4075 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); | |
3c7b9897 AM |
4076 | else if (out_attr->i == 1 && in_attr->i == 3) |
4077 | _bfd_error_handler | |
4078 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), | |
4079 | obfd, ibfd); | |
4080 | else if (out_attr->i == 3 && in_attr->i == 1) | |
4081 | _bfd_error_handler | |
4082 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), | |
4083 | ibfd, obfd); | |
4084 | else if (out_attr->i == 3 && in_attr->i == 2) | |
4085 | _bfd_error_handler | |
4086 | (_("Warning: %B uses soft float, %B uses single-precision hard float"), | |
4087 | ibfd, obfd); | |
4088 | else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3)) | |
34c8bcba JM |
4089 | _bfd_error_handler |
4090 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); | |
3c7b9897 | 4091 | else if (in_attr->i > 3) |
34c8bcba JM |
4092 | _bfd_error_handler |
4093 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
c6e65352 | 4094 | in_attr->i); |
34c8bcba JM |
4095 | else |
4096 | _bfd_error_handler | |
4097 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
c6e65352 DJ |
4098 | out_attr->i); |
4099 | } | |
4100 | ||
4101 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4102 | merge non-conflicting ones. */ | |
4103 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4104 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4105 | if (in_attr->i != out_attr->i) | |
4106 | { | |
4107 | const char *in_abi = NULL, *out_abi = NULL; | |
4108 | ||
4109 | switch (in_attr->i) | |
4110 | { | |
4111 | case 1: in_abi = "generic"; break; | |
4112 | case 2: in_abi = "AltiVec"; break; | |
4113 | case 3: in_abi = "SPE"; break; | |
4114 | } | |
4115 | ||
4116 | switch (out_attr->i) | |
4117 | { | |
4118 | case 1: out_abi = "generic"; break; | |
4119 | case 2: out_abi = "AltiVec"; break; | |
4120 | case 3: out_abi = "SPE"; break; | |
4121 | } | |
4122 | ||
4123 | out_attr->type = 1; | |
4124 | if (out_attr->i == 0) | |
4125 | out_attr->i = in_attr->i; | |
4126 | else if (in_attr->i == 0) | |
4127 | ; | |
4128 | /* For now, allow generic to transition to AltiVec or SPE | |
4129 | without a warning. If GCC marked files with their stack | |
4130 | alignment and used don't-care markings for files which are | |
4131 | not affected by the vector ABI, we could warn about this | |
4132 | case too. */ | |
4133 | else if (out_attr->i == 1) | |
4134 | out_attr->i = in_attr->i; | |
4135 | else if (in_attr->i == 1) | |
4136 | ; | |
4137 | else if (in_abi == NULL) | |
4138 | _bfd_error_handler | |
4139 | (_("Warning: %B uses unknown vector ABI %d"), ibfd, | |
4140 | in_attr->i); | |
4141 | else if (out_abi == NULL) | |
4142 | _bfd_error_handler | |
4143 | (_("Warning: %B uses unknown vector ABI %d"), obfd, | |
4144 | in_attr->i); | |
4145 | else | |
4146 | _bfd_error_handler | |
4147 | (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""), | |
4148 | ibfd, obfd, in_abi, out_abi); | |
34c8bcba JM |
4149 | } |
4150 | ||
f82e0623 NF |
4151 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4152 | and merge non-conflicting ones. */ | |
4153 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4154 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4155 | if (in_attr->i != out_attr->i) | |
4156 | { | |
4157 | out_attr->type = 1; | |
4158 | if (out_attr->i == 0) | |
4159 | out_attr->i = in_attr->i; | |
4160 | else if (in_attr->i == 0) | |
4161 | ; | |
4162 | else if (out_attr->i == 1 && in_attr->i == 2) | |
4163 | _bfd_error_handler | |
4164 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd); | |
4165 | else if (out_attr->i == 2 && in_attr->i == 1) | |
4166 | _bfd_error_handler | |
4167 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd); | |
4168 | else if (in_attr->i > 2) | |
4169 | _bfd_error_handler | |
4170 | (_("Warning: %B uses unknown small structure return convention %d"), ibfd, | |
4171 | in_attr->i); | |
4172 | else | |
4173 | _bfd_error_handler | |
4174 | (_("Warning: %B uses unknown small structure return convention %d"), obfd, | |
4175 | out_attr->i); | |
4176 | } | |
4177 | ||
34c8bcba JM |
4178 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
4179 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
4180 | ||
4181 | return TRUE; | |
4182 | } | |
4183 | ||
8853c3d3 AM |
4184 | /* Merge backend specific data from an object file to the output |
4185 | object file when linking. */ | |
4186 | ||
4187 | static bfd_boolean | |
4188 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4189 | { | |
4190 | flagword old_flags; | |
4191 | flagword new_flags; | |
4192 | bfd_boolean error; | |
4193 | ||
0c8d6e5c | 4194 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4195 | return TRUE; |
4196 | ||
4197 | /* Check if we have the same endianess. */ | |
4198 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
4199 | return FALSE; | |
4200 | ||
34c8bcba JM |
4201 | if (!ppc_elf_merge_obj_attributes (ibfd, obfd)) |
4202 | return FALSE; | |
4203 | ||
8853c3d3 AM |
4204 | new_flags = elf_elfheader (ibfd)->e_flags; |
4205 | old_flags = elf_elfheader (obfd)->e_flags; | |
4206 | if (!elf_flags_init (obfd)) | |
4207 | { | |
4208 | /* First call, no flags set. */ | |
4209 | elf_flags_init (obfd) = TRUE; | |
4210 | elf_elfheader (obfd)->e_flags = new_flags; | |
4211 | } | |
4212 | ||
4213 | /* Compatible flags are ok. */ | |
4214 | else if (new_flags == old_flags) | |
4215 | ; | |
4216 | ||
4217 | /* Incompatible flags. */ | |
4218 | else | |
4219 | { | |
4220 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4221 | to be linked with either. */ | |
4222 | error = FALSE; | |
4223 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4224 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4225 | { | |
4226 | error = TRUE; | |
4227 | (*_bfd_error_handler) | |
4228 | (_("%B: compiled with -mrelocatable and linked with " | |
4229 | "modules compiled normally"), ibfd); | |
4230 | } | |
4231 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4232 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4233 | { | |
4234 | error = TRUE; | |
4235 | (*_bfd_error_handler) | |
4236 | (_("%B: compiled normally and linked with " | |
4237 | "modules compiled with -mrelocatable"), ibfd); | |
4238 | } | |
4239 | ||
4240 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4241 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4242 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4243 | ||
4244 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4245 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4246 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4247 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4248 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4249 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4250 | ||
4251 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4252 | any module uses it. */ | |
4253 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4254 | ||
4255 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4256 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4257 | ||
4258 | /* Warn about any other mismatches. */ | |
4259 | if (new_flags != old_flags) | |
4260 | { | |
4261 | error = TRUE; | |
4262 | (*_bfd_error_handler) | |
4263 | (_("%B: uses different e_flags (0x%lx) fields " | |
4264 | "than previous modules (0x%lx)"), | |
4265 | ibfd, (long) new_flags, (long) old_flags); | |
4266 | } | |
4267 | ||
4268 | if (error) | |
4269 | { | |
4270 | bfd_set_error (bfd_error_bad_value); | |
4271 | return FALSE; | |
4272 | } | |
4273 | } | |
4274 | ||
4275 | return TRUE; | |
4276 | } | |
4277 | \f | |
d7128ce4 AM |
4278 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4279 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4280 | int | |
4281 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4282 | struct bfd_link_info *info, | |
016687f8 | 4283 | enum ppc_elf_plt_type plt_style, |
0ba07910 | 4284 | int emit_stub_syms) |
d7128ce4 AM |
4285 | { |
4286 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4287 | flagword flags; |
d7128ce4 AM |
4288 | |
4289 | htab = ppc_elf_hash_table (info); | |
4a3dc543 | 4290 | |
a7f2871e AM |
4291 | htab->emit_stub_syms = emit_stub_syms; |
4292 | ||
4a3dc543 | 4293 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4294 | { |
4295 | if (plt_style == PLT_OLD) | |
4296 | htab->plt_type = PLT_OLD; | |
4297 | else | |
4298 | { | |
4299 | bfd *ibfd; | |
4300 | enum ppc_elf_plt_type plt_type = plt_style; | |
4301 | ||
4302 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4303 | Use the old style bss plt if a file makes plt calls | |
4304 | without using the new relocs, and if ld isn't given | |
4305 | --secure-plt and we never see REL16 relocs. */ | |
4306 | if (plt_type == PLT_UNSET) | |
4307 | plt_type = PLT_OLD; | |
60b31e8d | 4308 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next) |
0c8d6e5c | 4309 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4310 | { |
4311 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4312 | plt_type = PLT_NEW; | |
4313 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4314 | { | |
4315 | plt_type = PLT_OLD; | |
4316 | htab->old_bfd = ibfd; | |
4317 | break; | |
4318 | } | |
4319 | } | |
4320 | htab->plt_type = plt_type; | |
4321 | } | |
4322 | } | |
4323 | if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW) | |
4324 | info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd); | |
d7128ce4 | 4325 | |
4a3dc543 | 4326 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 4327 | |
4a3dc543 | 4328 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
4329 | { |
4330 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4331 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
4332 | |
4333 | /* The new PLT is a loaded section. */ | |
4334 | if (htab->plt != NULL | |
4335 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
4336 | return -1; | |
4337 | ||
4338 | /* The new GOT is not executable. */ | |
4339 | if (htab->got != NULL | |
4340 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
4341 | return -1; | |
d7128ce4 AM |
4342 | } |
4343 | else | |
4344 | { | |
4345 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
4346 | if (htab->glink != NULL |
4347 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
4348 | return -1; | |
d7128ce4 | 4349 | } |
4a3dc543 | 4350 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
4351 | } |
4352 | \f | |
25dbc73a AM |
4353 | /* Return the section that should be marked against GC for a given |
4354 | relocation. */ | |
586119b3 | 4355 | |
25dbc73a AM |
4356 | static asection * |
4357 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 4358 | struct bfd_link_info *info, |
25dbc73a AM |
4359 | Elf_Internal_Rela *rel, |
4360 | struct elf_link_hash_entry *h, | |
4361 | Elf_Internal_Sym *sym) | |
4362 | { | |
4363 | if (h != NULL) | |
07adf181 AM |
4364 | switch (ELF32_R_TYPE (rel->r_info)) |
4365 | { | |
4366 | case R_PPC_GNU_VTINHERIT: | |
4367 | case R_PPC_GNU_VTENTRY: | |
4368 | return NULL; | |
4369 | } | |
4370 | ||
4371 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 4372 | } |
a876ecf9 | 4373 | |
25dbc73a AM |
4374 | /* Update the got, plt and dynamic reloc reference counts for the |
4375 | section being removed. */ | |
4376 | ||
4377 | static bfd_boolean | |
4378 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
4379 | struct bfd_link_info *info, | |
4380 | asection *sec, | |
4381 | const Elf_Internal_Rela *relocs) | |
4382 | { | |
4383 | struct ppc_elf_link_hash_table *htab; | |
4384 | Elf_Internal_Shdr *symtab_hdr; | |
4385 | struct elf_link_hash_entry **sym_hashes; | |
4386 | bfd_signed_vma *local_got_refcounts; | |
4387 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 4388 | asection *got2; |
25dbc73a | 4389 | |
7dda2462 TG |
4390 | if (info->relocatable) |
4391 | return TRUE; | |
4392 | ||
c87b5a93 AM |
4393 | if ((sec->flags & SEC_ALLOC) == 0) |
4394 | return TRUE; | |
4395 | ||
25dbc73a AM |
4396 | elf_section_data (sec)->local_dynrel = NULL; |
4397 | ||
4398 | htab = ppc_elf_hash_table (info); | |
0ffa91dd | 4399 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a AM |
4400 | sym_hashes = elf_sym_hashes (abfd); |
4401 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 4402 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
4403 | |
4404 | relend = relocs + sec->reloc_count; | |
4405 | for (rel = relocs; rel < relend; rel++) | |
4406 | { | |
4407 | unsigned long r_symndx; | |
4408 | enum elf_ppc_reloc_type r_type; | |
4409 | struct elf_link_hash_entry *h = NULL; | |
4410 | ||
4411 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4412 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 4413 | { |
25dbc73a AM |
4414 | struct ppc_elf_dyn_relocs **pp, *p; |
4415 | struct ppc_elf_link_hash_entry *eh; | |
4416 | ||
4417 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4418 | while (h->root.type == bfd_link_hash_indirect | |
4419 | || h->root.type == bfd_link_hash_warning) | |
4420 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4421 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4422 | ||
4423 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4424 | if (p->sec == sec) | |
4425 | { | |
4426 | /* Everything must go for SEC. */ | |
4427 | *pp = p->next; | |
4428 | break; | |
4429 | } | |
a876ecf9 | 4430 | } |
ee05f2fe | 4431 | |
25dbc73a | 4432 | r_type = ELF32_R_TYPE (rel->r_info); |
de972ffa AM |
4433 | if (!htab->is_vxworks |
4434 | && h == NULL | |
4435 | && local_got_refcounts != NULL | |
4436 | && (!info->shared | |
4437 | || is_branch_reloc (r_type))) | |
e054468f | 4438 | { |
de972ffa AM |
4439 | struct plt_entry **local_plt = (struct plt_entry **) |
4440 | (local_got_refcounts + symtab_hdr->sh_info); | |
4441 | char *local_got_tls_masks = (char *) | |
4442 | (local_plt + symtab_hdr->sh_info); | |
4443 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
e054468f | 4444 | { |
de972ffa | 4445 | struct plt_entry **ifunc = local_plt + r_symndx; |
a877a2b6 AM |
4446 | bfd_vma addend = 0; |
4447 | struct plt_entry *ent; | |
4448 | ||
4449 | if (r_type == R_PPC_PLTREL24 && info->shared) | |
4450 | addend = rel->r_addend; | |
4451 | ent = find_plt_ent (ifunc, got2, addend); | |
e054468f AM |
4452 | if (ent->plt.refcount > 0) |
4453 | ent->plt.refcount -= 1; | |
4454 | continue; | |
4455 | } | |
4456 | } | |
4457 | ||
25dbc73a | 4458 | switch (r_type) |
ee05f2fe | 4459 | { |
25dbc73a AM |
4460 | case R_PPC_GOT_TLSLD16: |
4461 | case R_PPC_GOT_TLSLD16_LO: | |
4462 | case R_PPC_GOT_TLSLD16_HI: | |
4463 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4464 | case R_PPC_GOT_TLSGD16: |
4465 | case R_PPC_GOT_TLSGD16_LO: | |
4466 | case R_PPC_GOT_TLSGD16_HI: | |
4467 | case R_PPC_GOT_TLSGD16_HA: | |
4468 | case R_PPC_GOT_TPREL16: | |
4469 | case R_PPC_GOT_TPREL16_LO: | |
4470 | case R_PPC_GOT_TPREL16_HI: | |
4471 | case R_PPC_GOT_TPREL16_HA: | |
4472 | case R_PPC_GOT_DTPREL16: | |
4473 | case R_PPC_GOT_DTPREL16_LO: | |
4474 | case R_PPC_GOT_DTPREL16_HI: | |
4475 | case R_PPC_GOT_DTPREL16_HA: | |
4476 | case R_PPC_GOT16: | |
4477 | case R_PPC_GOT16_LO: | |
4478 | case R_PPC_GOT16_HI: | |
4479 | case R_PPC_GOT16_HA: | |
4480 | if (h != NULL) | |
ee05f2fe | 4481 | { |
25dbc73a AM |
4482 | if (h->got.refcount > 0) |
4483 | h->got.refcount--; | |
91e21fb7 AM |
4484 | if (!info->shared) |
4485 | { | |
4486 | struct plt_entry *ent; | |
4487 | ||
4488 | ent = find_plt_ent (&h->plt.plist, NULL, 0); | |
4489 | if (ent->plt.refcount > 0) | |
4490 | ent->plt.refcount -= 1; | |
4491 | } | |
ee05f2fe | 4492 | } |
25dbc73a AM |
4493 | else if (local_got_refcounts != NULL) |
4494 | { | |
4495 | if (local_got_refcounts[r_symndx] > 0) | |
4496 | local_got_refcounts[r_symndx]--; | |
4497 | } | |
4498 | break; | |
ee05f2fe | 4499 | |
25dbc73a AM |
4500 | case R_PPC_REL24: |
4501 | case R_PPC_REL14: | |
4502 | case R_PPC_REL14_BRTAKEN: | |
4503 | case R_PPC_REL14_BRNTAKEN: | |
4504 | case R_PPC_REL32: | |
3b36f7e6 | 4505 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
4506 | break; |
4507 | /* Fall thru */ | |
ee05f2fe | 4508 | |
25dbc73a AM |
4509 | case R_PPC_ADDR32: |
4510 | case R_PPC_ADDR24: | |
4511 | case R_PPC_ADDR16: | |
4512 | case R_PPC_ADDR16_LO: | |
4513 | case R_PPC_ADDR16_HI: | |
4514 | case R_PPC_ADDR16_HA: | |
4515 | case R_PPC_ADDR14: | |
4516 | case R_PPC_ADDR14_BRTAKEN: | |
4517 | case R_PPC_ADDR14_BRNTAKEN: | |
4518 | case R_PPC_UADDR32: | |
4519 | case R_PPC_UADDR16: | |
87538722 AM |
4520 | if (info->shared) |
4521 | break; | |
4522 | ||
25dbc73a AM |
4523 | case R_PPC_PLT32: |
4524 | case R_PPC_PLTREL24: | |
87538722 | 4525 | case R_PPC_PLTREL32: |
25dbc73a AM |
4526 | case R_PPC_PLT16_LO: |
4527 | case R_PPC_PLT16_HI: | |
4528 | case R_PPC_PLT16_HA: | |
4529 | if (h != NULL) | |
4530 | { | |
a877a2b6 AM |
4531 | bfd_vma addend = 0; |
4532 | struct plt_entry *ent; | |
4533 | ||
4534 | if (r_type == R_PPC_PLTREL24 && info->shared) | |
4535 | addend = rel->r_addend; | |
4536 | ent = find_plt_ent (&h->plt.plist, got2, addend); | |
a6aa5195 AM |
4537 | if (ent->plt.refcount > 0) |
4538 | ent->plt.refcount -= 1; | |
25dbc73a AM |
4539 | } |
4540 | break; | |
ee05f2fe | 4541 | |
25dbc73a AM |
4542 | default: |
4543 | break; | |
4544 | } | |
7fce784e | 4545 | } |
7fce784e AS |
4546 | return TRUE; |
4547 | } | |
25dbc73a | 4548 | \f |
3a71aa26 AM |
4549 | /* Set plt output section type, htab->tls_get_addr, and call the |
4550 | generic ELF tls_setup function. */ | |
7fce784e | 4551 | |
25dbc73a | 4552 | asection * |
a7f2871e AM |
4553 | ppc_elf_tls_setup (bfd *obfd, |
4554 | struct bfd_link_info *info, | |
4555 | int no_tls_get_addr_opt) | |
7fce784e | 4556 | { |
25dbc73a | 4557 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 4558 | |
25dbc73a | 4559 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
4560 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4561 | FALSE, FALSE, TRUE); | |
4562 | if (!no_tls_get_addr_opt) | |
4563 | { | |
4564 | struct elf_link_hash_entry *opt, *tga; | |
4565 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
4566 | FALSE, FALSE, TRUE); | |
4567 | if (opt != NULL | |
4568 | && (opt->root.type == bfd_link_hash_defined | |
4569 | || opt->root.type == bfd_link_hash_defweak)) | |
4570 | { | |
4571 | /* If glibc supports an optimized __tls_get_addr call stub, | |
4572 | signalled by the presence of __tls_get_addr_opt, and we'll | |
4573 | be calling __tls_get_addr via a plt call stub, then | |
4574 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
4575 | tga = htab->tls_get_addr; | |
4576 | if (htab->elf.dynamic_sections_created | |
4577 | && tga != NULL | |
4578 | && (tga->type == STT_FUNC | |
4579 | || tga->needs_plt) | |
4580 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
4581 | || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT | |
4582 | && tga->root.type == bfd_link_hash_undefweak))) | |
4583 | { | |
4584 | struct plt_entry *ent; | |
4585 | ent = find_plt_ent (&tga->plt.plist, NULL, 0); | |
4586 | if (ent != NULL | |
4587 | && ent->plt.refcount > 0) | |
4588 | { | |
4589 | tga->root.type = bfd_link_hash_indirect; | |
4590 | tga->root.u.i.link = &opt->root; | |
4591 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
4592 | if (opt->dynindx != -1) | |
4593 | { | |
4594 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
4595 | opt->dynindx = -1; | |
4596 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4597 | opt->dynstr_index); | |
4598 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
4599 | return FALSE; | |
4600 | } | |
4601 | htab->tls_get_addr = opt; | |
4602 | } | |
4603 | } | |
4604 | } | |
4605 | else | |
4606 | no_tls_get_addr_opt = TRUE; | |
4607 | } | |
4608 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
4a3dc543 | 4609 | if (htab->plt_type == PLT_NEW |
d7128ce4 AM |
4610 | && htab->plt != NULL |
4611 | && htab->plt->output_section != NULL) | |
4612 | { | |
4613 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
4614 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
4615 | } | |
4616 | ||
25dbc73a | 4617 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
4618 | } |
4619 | ||
3a71aa26 AM |
4620 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
4621 | HASH. */ | |
4622 | ||
4623 | static bfd_boolean | |
4624 | branch_reloc_hash_match (const bfd *ibfd, | |
4625 | const Elf_Internal_Rela *rel, | |
4626 | const struct elf_link_hash_entry *hash) | |
4627 | { | |
4628 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
4629 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
4630 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
4631 | ||
e054468f | 4632 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
4633 | { |
4634 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4635 | struct elf_link_hash_entry *h; | |
4636 | ||
4637 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4638 | while (h->root.type == bfd_link_hash_indirect | |
4639 | || h->root.type == bfd_link_hash_warning) | |
4640 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4641 | if (h == hash) | |
4642 | return TRUE; | |
4643 | } | |
4644 | return FALSE; | |
4645 | } | |
4646 | ||
25dbc73a AM |
4647 | /* Run through all the TLS relocs looking for optimization |
4648 | opportunities. */ | |
252b5132 | 4649 | |
25dbc73a AM |
4650 | bfd_boolean |
4651 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
4652 | struct bfd_link_info *info) | |
252b5132 | 4653 | { |
7fce784e | 4654 | bfd *ibfd; |
25dbc73a AM |
4655 | asection *sec; |
4656 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 4657 | int pass; |
252b5132 | 4658 | |
1d483afe | 4659 | if (info->relocatable || !info->executable) |
25dbc73a | 4660 | return TRUE; |
252b5132 | 4661 | |
7619e7c7 | 4662 | htab = ppc_elf_hash_table (info); |
b7fcf6f6 AM |
4663 | /* Make two passes through the relocs. First time check that tls |
4664 | relocs involved in setting up a tls_get_addr call are indeed | |
4665 | followed by such a call. If they are not, exclude them from | |
4666 | the optimizations done on the second pass. */ | |
4667 | for (pass = 0; pass < 2; ++pass) | |
4668 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4669 | { | |
4670 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 4671 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
7619e7c7 | 4672 | |
b7fcf6f6 AM |
4673 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
4674 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
4675 | { | |
4676 | Elf_Internal_Rela *relstart, *rel, *relend; | |
252b5132 | 4677 | |
b7fcf6f6 AM |
4678 | /* Read the relocations. */ |
4679 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4680 | info->keep_memory); | |
4681 | if (relstart == NULL) | |
4682 | return FALSE; | |
7619e7c7 | 4683 | |
b7fcf6f6 AM |
4684 | relend = relstart + sec->reloc_count; |
4685 | for (rel = relstart; rel < relend; rel++) | |
4686 | { | |
4687 | enum elf_ppc_reloc_type r_type; | |
4688 | unsigned long r_symndx; | |
4689 | struct elf_link_hash_entry *h = NULL; | |
4690 | char *tls_mask; | |
4691 | char tls_set, tls_clear; | |
4692 | bfd_boolean is_local; | |
4693 | int expecting_tls_get_addr; | |
4694 | bfd_signed_vma *got_count; | |
4695 | ||
4696 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4697 | if (r_symndx >= symtab_hdr->sh_info) | |
4698 | { | |
4699 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4700 | |
b7fcf6f6 AM |
4701 | sym_hashes = elf_sym_hashes (ibfd); |
4702 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4703 | while (h->root.type == bfd_link_hash_indirect | |
4704 | || h->root.type == bfd_link_hash_warning) | |
4705 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4706 | } | |
7619e7c7 | 4707 | |
b7fcf6f6 AM |
4708 | expecting_tls_get_addr = 0; |
4709 | is_local = FALSE; | |
4710 | if (h == NULL | |
4711 | || !h->def_dynamic) | |
4712 | is_local = TRUE; | |
7619e7c7 | 4713 | |
b7fcf6f6 AM |
4714 | r_type = ELF32_R_TYPE (rel->r_info); |
4715 | switch (r_type) | |
4716 | { | |
4717 | case R_PPC_GOT_TLSLD16: | |
4718 | case R_PPC_GOT_TLSLD16_LO: | |
4719 | expecting_tls_get_addr = 1; | |
4720 | /* Fall thru */ | |
4721 | ||
4722 | case R_PPC_GOT_TLSLD16_HI: | |
4723 | case R_PPC_GOT_TLSLD16_HA: | |
4724 | /* These relocs should never be against a symbol | |
4725 | defined in a shared lib. Leave them alone if | |
4726 | that turns out to be the case. */ | |
4727 | if (!is_local) | |
4728 | continue; | |
4729 | ||
4730 | /* LD -> LE */ | |
4731 | tls_set = 0; | |
4732 | tls_clear = TLS_LD; | |
4733 | break; | |
4734 | ||
4735 | case R_PPC_GOT_TLSGD16: | |
4736 | case R_PPC_GOT_TLSGD16_LO: | |
4737 | expecting_tls_get_addr = 1; | |
4738 | /* Fall thru */ | |
4739 | ||
4740 | case R_PPC_GOT_TLSGD16_HI: | |
4741 | case R_PPC_GOT_TLSGD16_HA: | |
4742 | if (is_local) | |
4743 | /* GD -> LE */ | |
4744 | tls_set = 0; | |
4745 | else | |
4746 | /* GD -> IE */ | |
4747 | tls_set = TLS_TLS | TLS_TPRELGD; | |
4748 | tls_clear = TLS_GD; | |
4749 | break; | |
4750 | ||
4751 | case R_PPC_GOT_TPREL16: | |
4752 | case R_PPC_GOT_TPREL16_LO: | |
4753 | case R_PPC_GOT_TPREL16_HI: | |
4754 | case R_PPC_GOT_TPREL16_HA: | |
4755 | if (is_local) | |
4756 | { | |
4757 | /* IE -> LE */ | |
4758 | tls_set = 0; | |
4759 | tls_clear = TLS_TPREL; | |
4760 | break; | |
4761 | } | |
4762 | else | |
4763 | continue; | |
4764 | ||
4765 | default: | |
25dbc73a | 4766 | continue; |
b7fcf6f6 | 4767 | } |
25dbc73a | 4768 | |
b7fcf6f6 AM |
4769 | if (pass == 0) |
4770 | { | |
727fc41e AM |
4771 | if (!expecting_tls_get_addr |
4772 | || !sec->has_tls_get_addr_call) | |
b7fcf6f6 | 4773 | continue; |
25dbc73a | 4774 | |
3a71aa26 AM |
4775 | if (rel + 1 < relend |
4776 | && branch_reloc_hash_match (ibfd, rel + 1, | |
4777 | htab->tls_get_addr)) | |
4778 | continue; | |
25dbc73a | 4779 | |
b7fcf6f6 AM |
4780 | /* Uh oh, we didn't find the expected call. We |
4781 | could just mark this symbol to exclude it | |
4782 | from tls optimization but it's safer to skip | |
4783 | the entire section. */ | |
4784 | sec->has_tls_reloc = 0; | |
4785 | break; | |
4786 | } | |
25dbc73a | 4787 | |
b7fcf6f6 AM |
4788 | if (h != NULL) |
4789 | { | |
4790 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4791 | got_count = &h->got.refcount; | |
4792 | } | |
4793 | else | |
4794 | { | |
4795 | Elf_Internal_Sym *sym; | |
4796 | bfd_signed_vma *lgot_refs; | |
e054468f | 4797 | struct plt_entry **local_plt; |
b7fcf6f6 | 4798 | char *lgot_masks; |
25dbc73a | 4799 | |
b7fcf6f6 AM |
4800 | if (locsyms == NULL) |
4801 | { | |
4802 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4803 | if (locsyms == NULL) | |
4804 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4805 | symtab_hdr->sh_info, | |
4806 | 0, NULL, NULL, NULL); | |
4807 | if (locsyms == NULL) | |
4808 | { | |
4809 | if (elf_section_data (sec)->relocs != relstart) | |
4810 | free (relstart); | |
4811 | return FALSE; | |
4812 | } | |
4813 | } | |
4814 | sym = locsyms + r_symndx; | |
4815 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4816 | if (lgot_refs == NULL) | |
4817 | abort (); | |
e054468f AM |
4818 | local_plt = (struct plt_entry **) |
4819 | (lgot_refs + symtab_hdr->sh_info); | |
4820 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
4821 | tls_mask = &lgot_masks[r_symndx]; |
4822 | got_count = &lgot_refs[r_symndx]; | |
4823 | } | |
25dbc73a | 4824 | |
b7fcf6f6 AM |
4825 | if (tls_set == 0) |
4826 | { | |
4827 | /* We managed to get rid of a got entry. */ | |
4828 | if (*got_count > 0) | |
4829 | *got_count -= 1; | |
4830 | } | |
25dbc73a | 4831 | |
b7fcf6f6 AM |
4832 | if (expecting_tls_get_addr) |
4833 | { | |
4834 | struct plt_entry *ent; | |
25dbc73a | 4835 | |
3ec01793 AM |
4836 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, |
4837 | NULL, 0); | |
b7fcf6f6 AM |
4838 | if (ent != NULL && ent->plt.refcount > 0) |
4839 | ent->plt.refcount -= 1; | |
4840 | } | |
25dbc73a | 4841 | |
b7fcf6f6 AM |
4842 | *tls_mask |= tls_set; |
4843 | *tls_mask &= ~tls_clear; | |
4844 | } | |
25dbc73a | 4845 | |
b7fcf6f6 AM |
4846 | if (elf_section_data (sec)->relocs != relstart) |
4847 | free (relstart); | |
4848 | } | |
4849 | ||
4850 | if (locsyms != NULL | |
4851 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4852 | { | |
4853 | if (!info->keep_memory) | |
4854 | free (locsyms); | |
4855 | else | |
4856 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4857 | } | |
4858 | } | |
25dbc73a AM |
4859 | return TRUE; |
4860 | } | |
4861 | \f | |
625af618 AM |
4862 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
4863 | ||
4864 | static bfd_boolean | |
4865 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
4866 | { | |
4867 | struct ppc_elf_dyn_relocs *p; | |
4868 | ||
4869 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
4870 | { | |
4871 | asection *s = p->sec->output_section; | |
4872 | ||
4873 | if (s != NULL | |
4874 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
4875 | == (SEC_READONLY | SEC_ALLOC))) | |
4876 | return TRUE; | |
4877 | } | |
4878 | return FALSE; | |
4879 | } | |
4880 | ||
25dbc73a AM |
4881 | /* Adjust a symbol defined by a dynamic object and referenced by a |
4882 | regular object. The current definition is in some section of the | |
4883 | dynamic object, but we're not including those sections. We have to | |
4884 | change the definition to something the rest of the link can | |
4885 | understand. */ | |
7fce784e | 4886 | |
25dbc73a AM |
4887 | static bfd_boolean |
4888 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4889 | struct elf_link_hash_entry *h) | |
4890 | { | |
4891 | struct ppc_elf_link_hash_table *htab; | |
4892 | asection *s; | |
7fce784e | 4893 | |
25dbc73a AM |
4894 | #ifdef DEBUG |
4895 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4896 | h->root.root.string); | |
4897 | #endif | |
252b5132 | 4898 | |
25dbc73a AM |
4899 | /* Make sure we know what is going on here. */ |
4900 | htab = ppc_elf_hash_table (info); | |
4901 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4902 | && (h->needs_plt | |
91e21fb7 | 4903 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
4904 | || h->u.weakdef != NULL |
4905 | || (h->def_dynamic | |
4906 | && h->ref_regular | |
4907 | && !h->def_regular))); | |
252b5132 | 4908 | |
25dbc73a AM |
4909 | /* Deal with function syms. */ |
4910 | if (h->type == STT_FUNC | |
e054468f | 4911 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
4912 | || h->needs_plt) |
4913 | { | |
4914 | /* Clear procedure linkage table information for any symbol that | |
4915 | won't need a .plt entry. */ | |
a6aa5195 AM |
4916 | struct plt_entry *ent; |
4917 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4918 | if (ent->plt.refcount > 0) | |
4919 | break; | |
4920 | if (ent == NULL | |
e054468f AM |
4921 | || (h->type != STT_GNU_IFUNC |
4922 | && (SYMBOL_CALLS_LOCAL (info, h) | |
4923 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4924 | && h->root.type == bfd_link_hash_undefweak)))) | |
252b5132 | 4925 | { |
25dbc73a | 4926 | /* A PLT entry is not required/allowed when: |
252b5132 | 4927 | |
25dbc73a AM |
4928 | 1. We are not using ld.so; because then the PLT entry |
4929 | can't be set up, so we can't use one. In this case, | |
4930 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4931 | |
25dbc73a AM |
4932 | 2. GC has rendered the entry unused. |
4933 | ||
4934 | 3. We know for certain that a call to this symbol | |
4935 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4936 | h->plt.plist = NULL; |
25dbc73a AM |
4937 | h->needs_plt = 0; |
4938 | } | |
625af618 AM |
4939 | else |
4940 | { | |
25f23106 AM |
4941 | /* After adjust_dynamic_symbol, non_got_ref set in the |
4942 | non-shared case means that we have allocated space in | |
4943 | .dynbss for the symbol and thus dyn_relocs for this | |
4944 | symbol should be discarded. | |
625af618 AM |
4945 | If we get here we know we are making a PLT entry for this |
4946 | symbol, and in an executable we'd normally resolve | |
4947 | relocations against this symbol to the PLT entry. Allow | |
4948 | dynamic relocs if the reference is weak, and the dynamic | |
4949 | relocs will not cause text relocation. */ | |
4950 | if (!h->ref_regular_nonweak | |
4951 | && h->non_got_ref | |
25f23106 | 4952 | && h->type != STT_GNU_IFUNC |
625af618 AM |
4953 | && !htab->is_vxworks |
4954 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
4955 | && !readonly_dynrelocs (h)) | |
4956 | h->non_got_ref = 0; | |
4957 | } | |
25dbc73a | 4958 | return TRUE; |
252b5132 | 4959 | } |
25dbc73a | 4960 | else |
a6aa5195 | 4961 | h->plt.plist = NULL; |
252b5132 | 4962 | |
25dbc73a AM |
4963 | /* If this is a weak symbol, and there is a real definition, the |
4964 | processor independent code will have arranged for us to see the | |
4965 | real definition first, and we can just use the same value. */ | |
4966 | if (h->u.weakdef != NULL) | |
252b5132 | 4967 | { |
25dbc73a AM |
4968 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4969 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4970 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4971 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4972 | if (ELIMINATE_COPY_RELOCS) | |
4973 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
4974 | return TRUE; | |
4975 | } | |
dc810e39 | 4976 | |
25dbc73a AM |
4977 | /* This is a reference to a symbol defined by a dynamic object which |
4978 | is not a function. */ | |
252b5132 | 4979 | |
25dbc73a AM |
4980 | /* If we are creating a shared library, we must presume that the |
4981 | only references to the symbol are via the global offset table. | |
4982 | For such cases we need not do anything here; the relocations will | |
4983 | be handled correctly by relocate_section. */ | |
4984 | if (info->shared) | |
4985 | return TRUE; | |
252b5132 | 4986 | |
25dbc73a AM |
4987 | /* If there are no references to this symbol that do not use the |
4988 | GOT, we don't need to generate a copy reloc. */ | |
4989 | if (!h->non_got_ref) | |
4990 | return TRUE; | |
4991 | ||
cfd2c773 NS |
4992 | /* If we didn't find any dynamic relocs in read-only sections, then |
4993 | we'll be keeping the dynamic relocs and avoiding the copy reloc. | |
4994 | We can't do this if there are any small data relocations. This | |
4995 | doesn't work on VxWorks, where we can not have dynamic | |
4996 | relocations (other than copy and jump slot relocations) in an | |
4997 | executable. */ | |
4dc4a9a5 | 4998 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 4999 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5000 | && !htab->is_vxworks |
5001 | && !h->def_regular | |
5002 | && !readonly_dynrelocs (h)) | |
25dbc73a | 5003 | { |
625af618 AM |
5004 | h->non_got_ref = 0; |
5005 | return TRUE; | |
252b5132 RH |
5006 | } |
5007 | ||
909272ee AM |
5008 | if (h->size == 0) |
5009 | { | |
5010 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5011 | h->root.root.string); | |
5012 | return TRUE; | |
5013 | } | |
5014 | ||
25dbc73a AM |
5015 | /* We must allocate the symbol in our .dynbss section, which will |
5016 | become part of the .bss section of the executable. There will be | |
5017 | an entry for this symbol in the .dynsym section. The dynamic | |
5018 | object will contain position independent code, so all references | |
5019 | from the dynamic object to this symbol will go through the global | |
5020 | offset table. The dynamic linker will use the .dynsym entry to | |
5021 | determine the address it must put in the global offset table, so | |
5022 | both the dynamic object and the regular object will refer to the | |
5023 | same memory location for the variable. | |
5024 | ||
4dc4a9a5 DJ |
5025 | Of course, if the symbol is referenced using SDAREL relocs, we |
5026 | must instead allocate it in .sbss. */ | |
25dbc73a | 5027 | |
4dc4a9a5 | 5028 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5029 | s = htab->dynsbss; |
5030 | else | |
5031 | s = htab->dynbss; | |
5032 | BFD_ASSERT (s != NULL); | |
5033 | ||
5034 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
5035 | copy the initial value out of the dynamic object and into the | |
5036 | runtime process image. We need to remember the offset into the | |
5037 | .rela.bss section we are going to use. */ | |
5038 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5039 | { | |
5040 | asection *srel; | |
5041 | ||
4dc4a9a5 | 5042 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5043 | srel = htab->relsbss; |
5044 | else | |
5045 | srel = htab->relbss; | |
5046 | BFD_ASSERT (srel != NULL); | |
5047 | srel->size += sizeof (Elf32_External_Rela); | |
5048 | h->needs_copy = 1; | |
5049 | } | |
7619e7c7 | 5050 | |
027297b7 | 5051 | return _bfd_elf_adjust_dynamic_copy (h, s); |
25dbc73a AM |
5052 | } |
5053 | \f | |
ac39eb42 AM |
5054 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5055 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5056 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5057 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5058 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5059 | |
5060 | static bfd_boolean | |
5061 | add_stub_sym (struct plt_entry *ent, | |
5062 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5063 | struct bfd_link_info *info) |
0ba07910 AM |
5064 | { |
5065 | struct elf_link_hash_entry *sh; | |
5066 | size_t len1, len2, len3; | |
5067 | char *name; | |
ac39eb42 AM |
5068 | const char *stub; |
5069 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5070 | ||
a877a2b6 | 5071 | if (info->shared) |
ac39eb42 AM |
5072 | stub = ".plt_pic32."; |
5073 | else | |
5074 | stub = ".plt_call32."; | |
0ba07910 AM |
5075 | |
5076 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5077 | len2 = strlen (stub); |
0ba07910 AM |
5078 | len3 = 0; |
5079 | if (ent->sec) | |
5080 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5081 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5082 | if (name == NULL) |
5083 | return FALSE; | |
5084 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5085 | if (ent->sec) | |
5086 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5087 | memcpy (name + 8 + len3, stub, len2); |
5088 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5089 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5090 | if (sh == NULL) | |
5091 | return FALSE; | |
5092 | if (sh->root.type == bfd_link_hash_new) | |
5093 | { | |
5094 | sh->root.type = bfd_link_hash_defined; | |
5095 | sh->root.u.def.section = htab->glink; | |
5096 | sh->root.u.def.value = ent->glink_offset; | |
5097 | sh->ref_regular = 1; | |
5098 | sh->def_regular = 1; | |
5099 | sh->ref_regular_nonweak = 1; | |
5100 | sh->forced_local = 1; | |
5101 | sh->non_elf = 0; | |
5102 | } | |
5103 | return TRUE; | |
5104 | } | |
5105 | ||
3b36f7e6 AM |
5106 | /* Allocate NEED contiguous space in .got, and return the offset. |
5107 | Handles allocation of the got header when crossing 32k. */ | |
5108 | ||
5109 | static bfd_vma | |
5110 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5111 | { | |
5112 | bfd_vma where; | |
4a3dc543 | 5113 | unsigned int max_before_header; |
3b36f7e6 | 5114 | |
4a3dc543 | 5115 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
5116 | { |
5117 | where = htab->got->size; | |
5118 | htab->got->size += need; | |
5119 | } | |
3b36f7e6 AM |
5120 | else |
5121 | { | |
4a3dc543 RS |
5122 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5123 | if (need <= htab->got_gap) | |
3b36f7e6 | 5124 | { |
4a3dc543 RS |
5125 | where = max_before_header - htab->got_gap; |
5126 | htab->got_gap -= need; | |
5127 | } | |
5128 | else | |
5129 | { | |
5130 | if (htab->got->size + need > max_before_header | |
5131 | && htab->got->size <= max_before_header) | |
5132 | { | |
5133 | htab->got_gap = max_before_header - htab->got->size; | |
5134 | htab->got->size = max_before_header + htab->got_header_size; | |
5135 | } | |
5136 | where = htab->got->size; | |
5137 | htab->got->size += need; | |
3b36f7e6 | 5138 | } |
3b36f7e6 AM |
5139 | } |
5140 | return where; | |
5141 | } | |
5142 | ||
25dbc73a | 5143 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5144 | |
b34976b6 | 5145 | static bfd_boolean |
25dbc73a | 5146 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5147 | { |
25dbc73a AM |
5148 | struct bfd_link_info *info = inf; |
5149 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5150 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 5151 | struct ppc_elf_dyn_relocs *p; |
252b5132 | 5152 | |
25dbc73a | 5153 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5154 | return TRUE; |
252b5132 | 5155 | |
25dbc73a AM |
5156 | if (h->root.type == bfd_link_hash_warning) |
5157 | /* When warning symbols are created, they **replace** the "real" | |
5158 | entry in the hash table, thus we never get to see the real | |
5159 | symbol in a hash traversal. So look at it now. */ | |
5160 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e47cd125 | 5161 | |
7619e7c7 | 5162 | htab = ppc_elf_hash_table (info); |
e054468f AM |
5163 | if (htab->elf.dynamic_sections_created |
5164 | || h->type == STT_GNU_IFUNC) | |
252b5132 | 5165 | { |
a6aa5195 AM |
5166 | struct plt_entry *ent; |
5167 | bfd_boolean doneone = FALSE; | |
28e99bb6 | 5168 | bfd_vma plt_offset = 0, glink_offset = 0; |
e054468f | 5169 | bfd_boolean dyn; |
28e99bb6 | 5170 | |
a6aa5195 AM |
5171 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5172 | if (ent->plt.refcount > 0) | |
5173 | { | |
5174 | /* Make sure this symbol is output as a dynamic symbol. */ | |
5175 | if (h->dynindx == -1 | |
e054468f AM |
5176 | && !h->forced_local |
5177 | && !h->def_regular | |
5178 | && htab->elf.dynamic_sections_created) | |
a6aa5195 AM |
5179 | { |
5180 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5181 | return FALSE; | |
5182 | } | |
252b5132 | 5183 | |
e054468f | 5184 | dyn = htab->elf.dynamic_sections_created; |
a6aa5195 | 5185 | if (info->shared |
e054468f AM |
5186 | || h->type == STT_GNU_IFUNC |
5187 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
a6aa5195 AM |
5188 | { |
5189 | asection *s = htab->plt; | |
25f23106 | 5190 | if (!dyn || h->dynindx == -1) |
e054468f | 5191 | s = htab->iplt; |
7619e7c7 | 5192 | |
25f23106 | 5193 | if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1) |
a6aa5195 | 5194 | { |
a6aa5195 | 5195 | if (!doneone) |
28e99bb6 AM |
5196 | { |
5197 | plt_offset = s->size; | |
5198 | s->size += 4; | |
5199 | } | |
5200 | ent->plt.offset = plt_offset; | |
d7128ce4 | 5201 | |
a6aa5195 | 5202 | s = htab->glink; |
a877a2b6 | 5203 | if (!doneone || info->shared) |
28e99bb6 AM |
5204 | { |
5205 | glink_offset = s->size; | |
5206 | s->size += GLINK_ENTRY_SIZE; | |
a7f2871e AM |
5207 | if (h == htab->tls_get_addr |
5208 | && !htab->no_tls_get_addr_opt) | |
5209 | s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE; | |
28e99bb6 AM |
5210 | } |
5211 | if (!doneone | |
5212 | && !info->shared | |
625af618 | 5213 | && h->def_dynamic |
a6aa5195 AM |
5214 | && !h->def_regular) |
5215 | { | |
5216 | h->root.u.def.section = s; | |
28e99bb6 | 5217 | h->root.u.def.value = glink_offset; |
a6aa5195 | 5218 | } |
28e99bb6 | 5219 | ent->glink_offset = glink_offset; |
0ba07910 AM |
5220 | |
5221 | if (htab->emit_stub_syms | |
ac39eb42 | 5222 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 5223 | return FALSE; |
a6aa5195 AM |
5224 | } |
5225 | else | |
5226 | { | |
a6aa5195 AM |
5227 | if (!doneone) |
5228 | { | |
28e99bb6 AM |
5229 | /* If this is the first .plt entry, make room |
5230 | for the special first entry. */ | |
5231 | if (s->size == 0) | |
9d8504b1 | 5232 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
5233 | |
5234 | /* The PowerPC PLT is actually composed of two | |
5235 | parts, the first part is 2 words (for a load | |
5236 | and a jump), and then there is a remaining | |
5237 | word available at the end. */ | |
9d8504b1 PB |
5238 | plt_offset = (htab->plt_initial_entry_size |
5239 | + (htab->plt_slot_size | |
5240 | * ((s->size | |
5241 | - htab->plt_initial_entry_size) | |
5242 | / htab->plt_entry_size))); | |
28e99bb6 AM |
5243 | |
5244 | /* If this symbol is not defined in a regular | |
5245 | file, and we are not generating a shared | |
de972ffa AM |
5246 | library, then set the symbol to this location |
5247 | in the .plt. This is to avoid text | |
5248 | relocations, and is required to make | |
28e99bb6 AM |
5249 | function pointers compare as equal between |
5250 | the normal executable and the shared library. */ | |
5251 | if (! info->shared | |
625af618 | 5252 | && h->def_dynamic |
28e99bb6 AM |
5253 | && !h->def_regular) |
5254 | { | |
5255 | h->root.u.def.section = s; | |
5256 | h->root.u.def.value = plt_offset; | |
5257 | } | |
5258 | ||
9d8504b1 PB |
5259 | /* Make room for this entry. */ |
5260 | s->size += htab->plt_entry_size; | |
5261 | /* After the 8192nd entry, room for two entries | |
5262 | is allocated. */ | |
4a3dc543 | 5263 | if (htab->plt_type == PLT_OLD |
9d8504b1 PB |
5264 | && (s->size - htab->plt_initial_entry_size) |
5265 | / htab->plt_entry_size | |
5266 | > PLT_NUM_SINGLE_ENTRIES) | |
5267 | s->size += htab->plt_entry_size; | |
a6aa5195 | 5268 | } |
28e99bb6 | 5269 | ent->plt.offset = plt_offset; |
a6aa5195 | 5270 | } |
25dbc73a | 5271 | |
a6aa5195 AM |
5272 | /* We also need to make an entry in the .rela.plt section. */ |
5273 | if (!doneone) | |
5274 | { | |
25f23106 AM |
5275 | if (!htab->elf.dynamic_sections_created |
5276 | || h->dynindx == -1) | |
e054468f AM |
5277 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
5278 | else | |
9d8504b1 | 5279 | { |
e054468f AM |
5280 | htab->relplt->size += sizeof (Elf32_External_Rela); |
5281 | ||
5282 | if (htab->plt_type == PLT_VXWORKS) | |
9d8504b1 | 5283 | { |
e054468f AM |
5284 | /* Allocate space for the unloaded relocations. */ |
5285 | if (!info->shared | |
5286 | && htab->elf.dynamic_sections_created) | |
9d8504b1 | 5287 | { |
e054468f AM |
5288 | if (ent->plt.offset |
5289 | == (bfd_vma) htab->plt_initial_entry_size) | |
5290 | { | |
5291 | htab->srelplt2->size | |
5292 | += (sizeof (Elf32_External_Rela) | |
5293 | * VXWORKS_PLTRESOLVE_RELOCS); | |
5294 | } | |
5295 | ||
9d8504b1 | 5296 | htab->srelplt2->size |
e054468f AM |
5297 | += (sizeof (Elf32_External_Rela) |
5298 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
9d8504b1 PB |
5299 | } |
5300 | ||
e054468f AM |
5301 | /* Every PLT entry has an associated GOT entry in |
5302 | .got.plt. */ | |
5303 | htab->sgotplt->size += 4; | |
9d8504b1 | 5304 | } |
9d8504b1 | 5305 | } |
a6aa5195 AM |
5306 | doneone = TRUE; |
5307 | } | |
5308 | } | |
5309 | else | |
5310 | ent->plt.offset = (bfd_vma) -1; | |
a6aa5195 | 5311 | } |
2ce859a1 AM |
5312 | else |
5313 | ent->plt.offset = (bfd_vma) -1; | |
5314 | ||
5315 | if (!doneone) | |
5316 | { | |
5317 | h->plt.plist = NULL; | |
5318 | h->needs_plt = 0; | |
5319 | } | |
25dbc73a AM |
5320 | } |
5321 | else | |
5322 | { | |
a6aa5195 | 5323 | h->plt.plist = NULL; |
25dbc73a AM |
5324 | h->needs_plt = 0; |
5325 | } | |
5326 | ||
5327 | eh = (struct ppc_elf_link_hash_entry *) h; | |
5328 | if (eh->elf.got.refcount > 0) | |
5329 | { | |
d6e14abc AM |
5330 | bfd_boolean dyn; |
5331 | unsigned int need; | |
5332 | ||
25dbc73a AM |
5333 | /* Make sure this symbol is output as a dynamic symbol. */ |
5334 | if (eh->elf.dynindx == -1 | |
b099ab9f | 5335 | && !eh->elf.forced_local |
25f23106 | 5336 | && eh->elf.type != STT_GNU_IFUNC |
b099ab9f | 5337 | && htab->elf.dynamic_sections_created) |
25dbc73a AM |
5338 | { |
5339 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 5340 | return FALSE; |
25dbc73a | 5341 | } |
252b5132 | 5342 | |
d6e14abc AM |
5343 | need = 0; |
5344 | if ((eh->tls_mask & TLS_TLS) != 0) | |
25dbc73a | 5345 | { |
d6e14abc | 5346 | if ((eh->tls_mask & TLS_LD) != 0) |
252b5132 | 5347 | { |
d6e14abc AM |
5348 | if (!eh->elf.def_dynamic) |
5349 | /* We'll just use htab->tlsld_got.offset. This should | |
5350 | always be the case. It's a little odd if we have | |
5351 | a local dynamic reloc against a non-local symbol. */ | |
5352 | htab->tlsld_got.refcount += 1; | |
5353 | else | |
3b36f7e6 | 5354 | need += 8; |
252b5132 | 5355 | } |
d6e14abc AM |
5356 | if ((eh->tls_mask & TLS_GD) != 0) |
5357 | need += 8; | |
5358 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5359 | need += 4; | |
5360 | if ((eh->tls_mask & TLS_DTPREL) != 0) | |
3b36f7e6 | 5361 | need += 4; |
d6e14abc AM |
5362 | } |
5363 | else | |
5364 | need += 4; | |
5365 | if (need == 0) | |
5366 | eh->elf.got.offset = (bfd_vma) -1; | |
5367 | else | |
5368 | { | |
3b36f7e6 | 5369 | eh->elf.got.offset = allocate_got (htab, need); |
25dbc73a AM |
5370 | dyn = htab->elf.dynamic_sections_created; |
5371 | if ((info->shared | |
5372 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
5373 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
5374 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 5375 | { |
91e21fb7 | 5376 | asection *rsec = htab->relgot; |
3b36f7e6 AM |
5377 | /* All the entries we allocated need relocs. |
5378 | Except LD only needs one. */ | |
d6e14abc AM |
5379 | if ((eh->tls_mask & TLS_LD) != 0 |
5380 | && eh->elf.def_dynamic) | |
3b36f7e6 | 5381 | need -= 4; |
25f23106 | 5382 | rsec->size += need * (sizeof (Elf32_External_Rela) / 4); |
252b5132 | 5383 | } |
25dbc73a AM |
5384 | } |
5385 | } | |
5386 | else | |
5387 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5388 | |
b099ab9f | 5389 | if (eh->dyn_relocs == NULL |
de972ffa | 5390 | || !htab->elf.dynamic_sections_created) |
25dbc73a | 5391 | return TRUE; |
252b5132 | 5392 | |
25dbc73a AM |
5393 | /* In the shared -Bsymbolic case, discard space allocated for |
5394 | dynamic pc-relative relocs against symbols which turn out to be | |
5395 | defined in regular objects. For the normal shared case, discard | |
5396 | space for relocs that have become local due to symbol visibility | |
5397 | changes. */ | |
5398 | ||
5399 | if (info->shared) | |
5400 | { | |
5401 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5402 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5403 | generated via assembly. We want calls to protected symbols to |
5404 | resolve directly to the function rather than going via the plt. | |
5405 | If people want function pointer comparisons to work as expected | |
5406 | then they should avoid writing weird assembly. */ | |
5407 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5408 | { | |
5409 | struct ppc_elf_dyn_relocs **pp; | |
5410 | ||
5411 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5412 | { |
25dbc73a AM |
5413 | p->count -= p->pc_count; |
5414 | p->pc_count = 0; | |
5415 | if (p->count == 0) | |
5416 | *pp = p->next; | |
5417 | else | |
5418 | pp = &p->next; | |
252b5132 | 5419 | } |
25dbc73a | 5420 | } |
252b5132 | 5421 | |
3348747a NS |
5422 | if (htab->is_vxworks) |
5423 | { | |
5424 | struct ppc_elf_dyn_relocs **pp; | |
5425 | ||
5426 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5427 | { | |
5428 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5429 | *pp = p->next; | |
5430 | else | |
5431 | pp = &p->next; | |
5432 | } | |
5433 | } | |
5434 | ||
89200bf8 AM |
5435 | /* Discard relocs on undefined symbols that must be local. */ |
5436 | if (eh->dyn_relocs != NULL | |
5437 | && h->root.type == bfd_link_hash_undefined | |
5438 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
5439 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
5440 | eh->dyn_relocs = NULL; | |
5441 | ||
25dbc73a AM |
5442 | /* Also discard relocs on undefined weak syms with non-default |
5443 | visibility. */ | |
cab87ef9 AM |
5444 | if (eh->dyn_relocs != NULL |
5445 | && h->root.type == bfd_link_hash_undefweak) | |
25dbc73a | 5446 | { |
dfbb6ac9 AM |
5447 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
5448 | eh->dyn_relocs = NULL; | |
5449 | ||
5450 | /* Make sure undefined weak symbols are output as a dynamic | |
5451 | symbol in PIEs. */ | |
5452 | else if (h->dynindx == -1 | |
e054468f AM |
5453 | && !h->forced_local |
5454 | && !h->def_regular) | |
dfbb6ac9 AM |
5455 | { |
5456 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5457 | return FALSE; | |
5458 | } | |
25dbc73a AM |
5459 | } |
5460 | } | |
5461 | else if (ELIMINATE_COPY_RELOCS) | |
5462 | { | |
5463 | /* For the non-shared case, discard space for relocs against | |
5464 | symbols which turn out to need copy relocs or are not | |
5465 | dynamic. */ | |
7619e7c7 | 5466 | |
25dbc73a | 5467 | if (!h->non_got_ref |
25dbc73a AM |
5468 | && !h->def_regular) |
5469 | { | |
5470 | /* Make sure this symbol is output as a dynamic symbol. | |
5471 | Undefined weak syms won't yet be marked as dynamic. */ | |
5472 | if (h->dynindx == -1 | |
25f23106 | 5473 | && !h->forced_local) |
25dbc73a AM |
5474 | { |
5475 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5476 | return FALSE; | |
5477 | } | |
7619e7c7 | 5478 | |
25dbc73a AM |
5479 | /* If that succeeded, we know we'll be keeping all the |
5480 | relocs. */ | |
5481 | if (h->dynindx != -1) | |
5482 | goto keep; | |
5483 | } | |
252b5132 | 5484 | |
25dbc73a | 5485 | eh->dyn_relocs = NULL; |
252b5132 | 5486 | |
25dbc73a AM |
5487 | keep: ; |
5488 | } | |
252b5132 | 5489 | |
25dbc73a AM |
5490 | /* Finally, allocate space. */ |
5491 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5492 | { | |
5493 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
5494 | if (!htab->elf.dynamic_sections_created) |
5495 | sreloc = htab->reliplt; | |
25dbc73a AM |
5496 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
5497 | } | |
252b5132 | 5498 | |
25dbc73a AM |
5499 | return TRUE; |
5500 | } | |
7619e7c7 | 5501 | |
625af618 AM |
5502 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
5503 | read-only sections. */ | |
7619e7c7 | 5504 | |
25dbc73a | 5505 | static bfd_boolean |
625af618 | 5506 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) |
25dbc73a | 5507 | { |
25dbc73a AM |
5508 | if (h->root.type == bfd_link_hash_indirect) |
5509 | return TRUE; | |
252b5132 | 5510 | |
25dbc73a AM |
5511 | if (h->root.type == bfd_link_hash_warning) |
5512 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 5513 | |
625af618 | 5514 | if (readonly_dynrelocs (h)) |
25dbc73a | 5515 | { |
625af618 | 5516 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; |
ee05f2fe | 5517 | |
625af618 AM |
5518 | /* Not an error, just cut short the traversal. */ |
5519 | return FALSE; | |
25dbc73a AM |
5520 | } |
5521 | return TRUE; | |
5522 | } | |
5523 | ||
5524 | /* Set the sizes of the dynamic sections. */ | |
5525 | ||
5526 | static bfd_boolean | |
5527 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5528 | struct bfd_link_info *info) | |
5529 | { | |
5530 | struct ppc_elf_link_hash_table *htab; | |
5531 | asection *s; | |
5532 | bfd_boolean relocs; | |
5533 | bfd *ibfd; | |
7fce784e | 5534 | |
252b5132 | 5535 | #ifdef DEBUG |
25dbc73a | 5536 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 5537 | #endif |
252b5132 | 5538 | |
25dbc73a AM |
5539 | htab = ppc_elf_hash_table (info); |
5540 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 5541 | |
25dbc73a AM |
5542 | if (elf_hash_table (info)->dynamic_sections_created) |
5543 | { | |
5544 | /* Set the contents of the .interp section to the interpreter. */ | |
5545 | if (info->executable) | |
5546 | { | |
5547 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); | |
5548 | BFD_ASSERT (s != NULL); | |
5549 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5550 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5551 | } | |
5552 | } | |
252b5132 | 5553 | |
4a3dc543 | 5554 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 5555 | htab->got_header_size = 16; |
4a3dc543 | 5556 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 5557 | htab->got_header_size = 12; |
252b5132 | 5558 | |
25dbc73a AM |
5559 | /* Set up .got offsets for local syms, and space for local dynamic |
5560 | relocs. */ | |
5561 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
5562 | { | |
5563 | bfd_signed_vma *local_got; | |
5564 | bfd_signed_vma *end_local_got; | |
e054468f AM |
5565 | struct plt_entry **local_plt; |
5566 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
5567 | char *lgot_masks; |
5568 | bfd_size_type locsymcount; | |
5569 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 5570 | |
0c8d6e5c | 5571 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 5572 | continue; |
7fce784e | 5573 | |
25dbc73a AM |
5574 | for (s = ibfd->sections; s != NULL; s = s->next) |
5575 | { | |
5576 | struct ppc_elf_dyn_relocs *p; | |
252b5132 | 5577 | |
25dbc73a AM |
5578 | for (p = ((struct ppc_elf_dyn_relocs *) |
5579 | elf_section_data (s)->local_dynrel); | |
5580 | p != NULL; | |
5581 | p = p->next) | |
5582 | { | |
5583 | if (!bfd_is_abs_section (p->sec) | |
5584 | && bfd_is_abs_section (p->sec->output_section)) | |
5585 | { | |
5586 | /* Input section has been discarded, either because | |
5587 | it is a copy of a linkonce section or due to | |
5588 | linker script /DISCARD/, so we'll be discarding | |
5589 | the relocs too. */ | |
7fce784e | 5590 | } |
3348747a NS |
5591 | else if (htab->is_vxworks |
5592 | && strcmp (p->sec->output_section->name, | |
5593 | ".tls_vars") == 0) | |
5594 | { | |
5595 | /* Relocations in vxworks .tls_vars sections are | |
5596 | handled specially by the loader. */ | |
5597 | } | |
25dbc73a | 5598 | else if (p->count != 0) |
7fce784e | 5599 | { |
25f23106 AM |
5600 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
5601 | if (!htab->elf.dynamic_sections_created) | |
5602 | sreloc = htab->reliplt; | |
5603 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
25dbc73a AM |
5604 | if ((p->sec->output_section->flags |
5605 | & (SEC_READONLY | SEC_ALLOC)) | |
5606 | == (SEC_READONLY | SEC_ALLOC)) | |
5607 | info->flags |= DF_TEXTREL; | |
7fce784e | 5608 | } |
252b5132 | 5609 | } |
252b5132 | 5610 | } |
252b5132 | 5611 | |
25dbc73a AM |
5612 | local_got = elf_local_got_refcounts (ibfd); |
5613 | if (!local_got) | |
5614 | continue; | |
252b5132 | 5615 | |
0ffa91dd | 5616 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
5617 | locsymcount = symtab_hdr->sh_info; |
5618 | end_local_got = local_got + locsymcount; | |
e054468f AM |
5619 | local_plt = (struct plt_entry **) end_local_got; |
5620 | end_local_plt = local_plt + locsymcount; | |
5621 | lgot_masks = (char *) end_local_plt; | |
25dbc73a AM |
5622 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
5623 | if (*local_got > 0) | |
5624 | { | |
d6e14abc AM |
5625 | unsigned int need = 0; |
5626 | if ((*lgot_masks & TLS_TLS) != 0) | |
25dbc73a | 5627 | { |
d6e14abc AM |
5628 | if ((*lgot_masks & TLS_GD) != 0) |
5629 | need += 8; | |
5630 | if ((*lgot_masks & TLS_LD) != 0) | |
5631 | htab->tlsld_got.refcount += 1; | |
5632 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5633 | need += 4; | |
5634 | if ((*lgot_masks & TLS_DTPREL) != 0) | |
5635 | need += 4; | |
25dbc73a | 5636 | } |
d6e14abc AM |
5637 | else |
5638 | need += 4; | |
5639 | if (need == 0) | |
5640 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
5641 | else |
5642 | { | |
3b36f7e6 | 5643 | *local_got = allocate_got (htab, need); |
25dbc73a | 5644 | if (info->shared) |
3b36f7e6 AM |
5645 | htab->relgot->size += (need |
5646 | * (sizeof (Elf32_External_Rela) / 4)); | |
25dbc73a AM |
5647 | } |
5648 | } | |
5649 | else | |
5650 | *local_got = (bfd_vma) -1; | |
e054468f AM |
5651 | |
5652 | if (htab->is_vxworks) | |
5653 | continue; | |
5654 | ||
5655 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
5656 | for (; local_plt < end_local_plt; ++local_plt) | |
5657 | { | |
5658 | struct plt_entry *ent; | |
5659 | bfd_boolean doneone = FALSE; | |
5660 | bfd_vma plt_offset = 0, glink_offset = 0; | |
5661 | ||
5662 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
5663 | if (ent->plt.refcount > 0) | |
5664 | { | |
5665 | asection *s = htab->iplt; | |
5666 | ||
5667 | if (!doneone) | |
5668 | { | |
5669 | plt_offset = s->size; | |
5670 | s->size += 4; | |
5671 | } | |
5672 | ent->plt.offset = plt_offset; | |
5673 | ||
5674 | s = htab->glink; | |
a877a2b6 | 5675 | if (!doneone || info->shared) |
e054468f AM |
5676 | { |
5677 | glink_offset = s->size; | |
5678 | s->size += GLINK_ENTRY_SIZE; | |
5679 | } | |
5680 | ent->glink_offset = glink_offset; | |
5681 | ||
5682 | if (!doneone) | |
5683 | { | |
25f23106 | 5684 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
5685 | doneone = TRUE; |
5686 | } | |
5687 | } | |
5688 | else | |
5689 | ent->plt.offset = (bfd_vma) -1; | |
5690 | } | |
25dbc73a | 5691 | } |
252b5132 | 5692 | |
b7fcf6f6 AM |
5693 | /* Allocate space for global sym dynamic relocs. */ |
5694 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
5695 | ||
3b36f7e6 AM |
5696 | if (htab->tlsld_got.refcount > 0) |
5697 | { | |
5698 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
5699 | if (info->shared) | |
5700 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
5701 | } | |
5702 | else | |
5703 | htab->tlsld_got.offset = (bfd_vma) -1; | |
5704 | ||
4a3dc543 | 5705 | if (htab->got != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
5706 | { |
5707 | unsigned int g_o_t = 32768; | |
5708 | ||
4d962050 AM |
5709 | /* If we haven't allocated the header, do so now. When we get here, |
5710 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
5711 | or 32780 to 65536 (header allocated). For new plt/got, the | |
5712 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
5713 | if (htab->got->size <= 32768) |
5714 | { | |
5715 | g_o_t = htab->got->size; | |
4a3dc543 | 5716 | if (htab->plt_type == PLT_OLD) |
4d962050 | 5717 | g_o_t += 4; |
3b36f7e6 AM |
5718 | htab->got->size += htab->got_header_size; |
5719 | } | |
3b36f7e6 AM |
5720 | |
5721 | htab->elf.hgot->root.u.def.value = g_o_t; | |
5722 | } | |
bd6c6e2b AM |
5723 | if (info->shared) |
5724 | { | |
5725 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
5726 | if (sda != NULL | |
5727 | && !(sda->root.type == bfd_link_hash_defined | |
5728 | || sda->root.type == bfd_link_hash_defweak)) | |
5729 | { | |
5730 | sda->root.type = bfd_link_hash_defined; | |
5731 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
5732 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
5733 | } | |
5734 | } | |
3b36f7e6 | 5735 | |
e054468f AM |
5736 | if (htab->glink != NULL |
5737 | && htab->glink->size != 0 | |
5738 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
5739 | { |
5740 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
5741 | /* Space for the branch table. */ |
5742 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
5743 | /* Pad out to align the start of PLTresolve. */ | |
5744 | htab->glink->size += -htab->glink->size & 15; | |
d7128ce4 | 5745 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 AM |
5746 | |
5747 | if (htab->emit_stub_syms) | |
5748 | { | |
5749 | struct elf_link_hash_entry *sh; | |
5750 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
5751 | TRUE, FALSE, FALSE); | |
5752 | if (sh == NULL) | |
5753 | return FALSE; | |
5754 | if (sh->root.type == bfd_link_hash_new) | |
5755 | { | |
5756 | sh->root.type = bfd_link_hash_defined; | |
5757 | sh->root.u.def.section = htab->glink; | |
5758 | sh->root.u.def.value = htab->glink_pltresolve; | |
5759 | sh->ref_regular = 1; | |
5760 | sh->def_regular = 1; | |
5761 | sh->ref_regular_nonweak = 1; | |
5762 | sh->forced_local = 1; | |
5763 | sh->non_elf = 0; | |
5764 | } | |
5765 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
5766 | TRUE, FALSE, FALSE); | |
5767 | if (sh == NULL) | |
5768 | return FALSE; | |
5769 | if (sh->root.type == bfd_link_hash_new) | |
5770 | { | |
5771 | sh->root.type = bfd_link_hash_defined; | |
5772 | sh->root.u.def.section = htab->glink; | |
5773 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
5774 | sh->ref_regular = 1; | |
5775 | sh->def_regular = 1; | |
5776 | sh->ref_regular_nonweak = 1; | |
5777 | sh->forced_local = 1; | |
5778 | sh->non_elf = 0; | |
5779 | } | |
5780 | } | |
d7128ce4 AM |
5781 | } |
5782 | ||
25dbc73a AM |
5783 | /* We've now determined the sizes of the various dynamic sections. |
5784 | Allocate memory for them. */ | |
5785 | relocs = FALSE; | |
5786 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 5787 | { |
9d8504b1 PB |
5788 | bfd_boolean strip_section = TRUE; |
5789 | ||
25dbc73a AM |
5790 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
5791 | continue; | |
252b5132 | 5792 | |
25dbc73a | 5793 | if (s == htab->plt |
e054468f | 5794 | || s == htab->got) |
25dbc73a | 5795 | { |
9d8504b1 PB |
5796 | /* We'd like to strip these sections if they aren't needed, but if |
5797 | we've exported dynamic symbols from them we must leave them. | |
5798 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 5799 | if (htab->elf.hplt != NULL) |
9d8504b1 | 5800 | strip_section = FALSE; |
25dbc73a AM |
5801 | /* Strip this section if we don't need it; see the |
5802 | comment below. */ | |
5803 | } | |
e054468f AM |
5804 | else if (s == htab->iplt |
5805 | || s == htab->glink | |
5806 | || s == htab->sgotplt | |
5807 | || s == htab->sbss | |
5808 | || s == htab->dynbss | |
5809 | || s == htab->dynsbss | |
5810 | || s == htab->sdata[0].section | |
c9a2f333 | 5811 | || s == htab->sdata[1].section) |
25dbc73a | 5812 | { |
c9a2f333 | 5813 | /* Strip these too. */ |
25dbc73a | 5814 | } |
0112cd26 | 5815 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
25dbc73a | 5816 | { |
c456f082 | 5817 | if (s->size != 0) |
25dbc73a AM |
5818 | { |
5819 | /* Remember whether there are any relocation sections. */ | |
5820 | relocs = TRUE; | |
252b5132 | 5821 | |
25dbc73a AM |
5822 | /* We use the reloc_count field as a counter if we need |
5823 | to copy relocs into the output file. */ | |
5824 | s->reloc_count = 0; | |
252b5132 RH |
5825 | } |
5826 | } | |
25dbc73a AM |
5827 | else |
5828 | { | |
5829 | /* It's not one of our sections, so don't allocate space. */ | |
5830 | continue; | |
5831 | } | |
252b5132 | 5832 | |
9d8504b1 | 5833 | if (s->size == 0 && strip_section) |
25dbc73a | 5834 | { |
c456f082 AM |
5835 | /* If we don't need this section, strip it from the |
5836 | output file. This is mostly to handle .rela.bss and | |
5837 | .rela.plt. We must create both sections in | |
5838 | create_dynamic_sections, because they must be created | |
5839 | before the linker maps input sections to output | |
5840 | sections. The linker does that before | |
5841 | adjust_dynamic_symbol is called, and it is that | |
5842 | function which decides whether anything needs to go | |
5843 | into these sections. */ | |
8423293d | 5844 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
5845 | continue; |
5846 | } | |
7fce784e | 5847 | |
d7128ce4 | 5848 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
5849 | continue; |
5850 | ||
25dbc73a AM |
5851 | /* Allocate memory for the section contents. */ |
5852 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
5853 | if (s->contents == NULL) | |
5854 | return FALSE; | |
5855 | } | |
252b5132 | 5856 | |
25dbc73a | 5857 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 5858 | { |
25dbc73a AM |
5859 | /* Add some entries to the .dynamic section. We fill in the |
5860 | values later, in ppc_elf_finish_dynamic_sections, but we | |
5861 | must add the entries now so that we get the correct size for | |
5862 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5863 | dynamic linker and used by the debugger. */ | |
5864 | #define add_dynamic_entry(TAG, VAL) \ | |
5865 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 5866 | |
25dbc73a | 5867 | if (info->executable) |
7619e7c7 | 5868 | { |
25dbc73a AM |
5869 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5870 | return FALSE; | |
7619e7c7 AM |
5871 | } |
5872 | ||
25dbc73a | 5873 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 5874 | { |
25dbc73a AM |
5875 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
5876 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
5877 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5878 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
5879 | return FALSE; | |
5880 | } | |
7619e7c7 | 5881 | |
d7128ce4 AM |
5882 | if (htab->glink != NULL && htab->glink->size != 0) |
5883 | { | |
1fe44d79 | 5884 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 5885 | return FALSE; |
a7f2871e AM |
5886 | if (!htab->no_tls_get_addr_opt |
5887 | && htab->tls_get_addr != NULL | |
5888 | && htab->tls_get_addr->plt.plist != NULL | |
5889 | && !add_dynamic_entry (DT_PPC_TLSOPT, 0)) | |
5890 | return FALSE; | |
d7128ce4 AM |
5891 | } |
5892 | ||
25dbc73a AM |
5893 | if (relocs) |
5894 | { | |
5895 | if (!add_dynamic_entry (DT_RELA, 0) | |
5896 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5897 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
5898 | return FALSE; | |
5899 | } | |
7619e7c7 | 5900 | |
25dbc73a AM |
5901 | /* If any dynamic relocs apply to a read-only section, then we |
5902 | need a DT_TEXTREL entry. */ | |
5903 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 5904 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 5905 | info); |
7619e7c7 | 5906 | |
25dbc73a AM |
5907 | if ((info->flags & DF_TEXTREL) != 0) |
5908 | { | |
5909 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5910 | return FALSE; | |
7619e7c7 | 5911 | } |
7a2b07ff NS |
5912 | if (htab->is_vxworks |
5913 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
5914 | return FALSE; | |
5915 | } | |
25dbc73a AM |
5916 | #undef add_dynamic_entry |
5917 | ||
7619e7c7 AM |
5918 | return TRUE; |
5919 | } | |
0eb4a168 AM |
5920 | |
5921 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ | |
5922 | ||
5923 | static bfd_boolean | |
5924 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
5925 | { | |
5926 | if (h->plt.plist != NULL | |
5927 | && !h->def_regular | |
5928 | && (!h->pointer_equality_needed | |
5929 | || !h->ref_regular_nonweak)) | |
5930 | return FALSE; | |
5931 | ||
5932 | return _bfd_elf_hash_symbol (h); | |
5933 | } | |
25dbc73a AM |
5934 | \f |
5935 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
5936 | ||
01017ef8 NS |
5937 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
5938 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
5939 | static const int shared_stub_entry[] = |
5940 | { | |
5941 | 0x7c0802a6, /* mflr 0 */ | |
5942 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
5943 | 0x7d8802a6, /* mflr 12 */ |
5944 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
5945 | 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */ | |
25dbc73a | 5946 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 5947 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
5948 | 0x4e800420, /* bctr */ |
5949 | }; | |
5950 | ||
5951 | static const int stub_entry[] = | |
5952 | { | |
01017ef8 NS |
5953 | 0x3d800000, /* lis 12,xxx@ha */ |
5954 | 0x398c0000, /* addi 12,12,xxx@l */ | |
5955 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
5956 | 0x4e800420, /* bctr */ |
5957 | }; | |
5958 | ||
5959 | static bfd_boolean | |
5960 | ppc_elf_relax_section (bfd *abfd, | |
5961 | asection *isec, | |
5962 | struct bfd_link_info *link_info, | |
5963 | bfd_boolean *again) | |
5964 | { | |
5965 | struct one_fixup | |
5966 | { | |
5967 | struct one_fixup *next; | |
5968 | asection *tsec; | |
01017ef8 NS |
5969 | /* Final link, can use the symbol offset. For a |
5970 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
5971 | bfd_vma toff; |
5972 | bfd_vma trampoff; | |
5973 | }; | |
7619e7c7 | 5974 | |
25dbc73a AM |
5975 | Elf_Internal_Shdr *symtab_hdr; |
5976 | bfd_byte *contents = NULL; | |
5977 | Elf_Internal_Sym *isymbuf = NULL; | |
5978 | Elf_Internal_Rela *internal_relocs = NULL; | |
5979 | Elf_Internal_Rela *irel, *irelend; | |
5980 | struct one_fixup *fixups = NULL; | |
9bc4e62b | 5981 | unsigned changes = 0; |
d7128ce4 | 5982 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 5983 | bfd_size_type trampoff; |
a6aa5195 | 5984 | asection *got2; |
7619e7c7 | 5985 | |
25dbc73a | 5986 | *again = FALSE; |
7619e7c7 | 5987 | |
c87b5a93 | 5988 | /* Nothing to do if there are no relocations, and no need to do |
a8ad78a7 | 5989 | anything with non-alloc or non-code sections. */ |
c87b5a93 | 5990 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 5991 | || (isec->flags & SEC_CODE) == 0 |
c87b5a93 AM |
5992 | || (isec->flags & SEC_RELOC) == 0 |
5993 | || isec->reloc_count == 0) | |
25dbc73a | 5994 | return TRUE; |
7619e7c7 | 5995 | |
c8a1f254 NS |
5996 | /* We cannot represent the required PIC relocs in the output, so don't |
5997 | do anything. The linker doesn't support mixing -shared and -r | |
5998 | anyway. */ | |
5999 | if (link_info->relocatable && link_info->shared) | |
6000 | return TRUE; | |
6001 | ||
25dbc73a AM |
6002 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
6003 | /* Space for a branch around any trampolines. */ | |
6004 | trampoff += 4; | |
7619e7c7 | 6005 | |
0ffa91dd | 6006 | symtab_hdr = &elf_symtab_hdr (abfd); |
7619e7c7 | 6007 | |
25dbc73a AM |
6008 | /* Get a copy of the native relocations. */ |
6009 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, | |
6010 | link_info->keep_memory); | |
6011 | if (internal_relocs == NULL) | |
6012 | goto error_return; | |
7619e7c7 | 6013 | |
d7128ce4 | 6014 | htab = ppc_elf_hash_table (link_info); |
a6aa5195 | 6015 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
7619e7c7 | 6016 | |
a6aa5195 | 6017 | irelend = internal_relocs + isec->reloc_count; |
25dbc73a | 6018 | for (irel = internal_relocs; irel < irelend; irel++) |
7619e7c7 | 6019 | { |
25dbc73a | 6020 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
01017ef8 | 6021 | bfd_vma reladdr, toff, roff; |
25dbc73a AM |
6022 | asection *tsec; |
6023 | struct one_fixup *f; | |
6024 | size_t insn_offset = 0; | |
6025 | bfd_vma max_branch_offset, val; | |
6026 | bfd_byte *hit_addr; | |
6027 | unsigned long t0; | |
de972ffa | 6028 | struct elf_link_hash_entry *h; |
a9585d22 | 6029 | struct plt_entry **plist; |
25dbc73a | 6030 | unsigned char sym_type; |
7619e7c7 | 6031 | |
25dbc73a AM |
6032 | switch (r_type) |
6033 | { | |
6034 | case R_PPC_REL24: | |
6035 | case R_PPC_LOCAL24PC: | |
6036 | case R_PPC_PLTREL24: | |
6037 | max_branch_offset = 1 << 25; | |
6038 | break; | |
7619e7c7 | 6039 | |
25dbc73a AM |
6040 | case R_PPC_REL14: |
6041 | case R_PPC_REL14_BRTAKEN: | |
6042 | case R_PPC_REL14_BRNTAKEN: | |
6043 | max_branch_offset = 1 << 15; | |
6044 | break; | |
7619e7c7 | 6045 | |
25dbc73a AM |
6046 | default: |
6047 | continue; | |
6048 | } | |
7619e7c7 | 6049 | |
25dbc73a | 6050 | /* Get the value of the symbol referred to by the reloc. */ |
de972ffa | 6051 | h = NULL; |
25dbc73a AM |
6052 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
6053 | { | |
6054 | /* A local symbol. */ | |
6055 | Elf_Internal_Sym *isym; | |
7fce784e | 6056 | |
25dbc73a AM |
6057 | /* Read this BFD's local symbols. */ |
6058 | if (isymbuf == NULL) | |
6059 | { | |
6060 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6061 | if (isymbuf == NULL) | |
6062 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6063 | symtab_hdr->sh_info, 0, | |
6064 | NULL, NULL, NULL); | |
6065 | if (isymbuf == 0) | |
6066 | goto error_return; | |
6067 | } | |
6068 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6069 | if (isym->st_shndx == SHN_UNDEF) | |
c8a1f254 | 6070 | tsec = bfd_und_section_ptr; |
25dbc73a AM |
6071 | else if (isym->st_shndx == SHN_ABS) |
6072 | tsec = bfd_abs_section_ptr; | |
6073 | else if (isym->st_shndx == SHN_COMMON) | |
6074 | tsec = bfd_com_section_ptr; | |
6075 | else | |
6076 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7fce784e | 6077 | |
25dbc73a AM |
6078 | toff = isym->st_value; |
6079 | sym_type = ELF_ST_TYPE (isym->st_info); | |
6080 | } | |
6081 | else | |
6082 | { | |
6083 | /* Global symbol handling. */ | |
6084 | unsigned long indx; | |
7619e7c7 | 6085 | |
25dbc73a AM |
6086 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6087 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6088 | |
25dbc73a AM |
6089 | while (h->root.type == bfd_link_hash_indirect |
6090 | || h->root.type == bfd_link_hash_warning) | |
6091 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6092 | |
a9585d22 AM |
6093 | if (h->root.type == bfd_link_hash_defined |
6094 | || h->root.type == bfd_link_hash_defweak) | |
25dbc73a AM |
6095 | { |
6096 | tsec = h->root.u.def.section; | |
6097 | toff = h->root.u.def.value; | |
6098 | } | |
c8a1f254 NS |
6099 | else if (h->root.type == bfd_link_hash_undefined |
6100 | || h->root.type == bfd_link_hash_undefweak) | |
6101 | { | |
6102 | tsec = bfd_und_section_ptr; | |
01017ef8 | 6103 | toff = link_info->relocatable ? indx : 0; |
c8a1f254 | 6104 | } |
25dbc73a AM |
6105 | else |
6106 | continue; | |
7619e7c7 | 6107 | |
25dbc73a AM |
6108 | sym_type = h->type; |
6109 | } | |
7619e7c7 | 6110 | |
a9585d22 AM |
6111 | /* The condition here under which we call find_plt_ent must |
6112 | match that in relocate_section. If we call find_plt_ent here | |
6113 | but not in relocate_section, or vice versa, then the branch | |
6114 | destination used here may be incorrect. */ | |
6115 | plist = NULL; | |
6116 | if (h != NULL) | |
de972ffa | 6117 | { |
a9585d22 AM |
6118 | /* We know is_branch_reloc (r_type) is true. */ |
6119 | if (h->type == STT_GNU_IFUNC | |
6120 | || r_type == R_PPC_PLTREL24) | |
de972ffa | 6121 | plist = &h->plt.plist; |
a9585d22 AM |
6122 | } |
6123 | else if (sym_type == STT_GNU_IFUNC | |
6124 | && elf_local_got_offsets (abfd) != NULL) | |
6125 | { | |
6126 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6127 | struct plt_entry **local_plt = (struct plt_entry **) | |
6128 | (local_got_offsets + symtab_hdr->sh_info); | |
6129 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
6130 | } | |
6131 | if (plist != NULL) | |
6132 | { | |
6133 | bfd_vma addend = 0; | |
6134 | struct plt_entry *ent; | |
de972ffa | 6135 | |
a9585d22 AM |
6136 | if (r_type == R_PPC_PLTREL24 && link_info->shared) |
6137 | addend = irel->r_addend; | |
6138 | ent = find_plt_ent (plist, got2, addend); | |
6139 | if (ent != NULL) | |
6140 | { | |
6141 | if (htab->plt_type == PLT_NEW | |
6142 | || h == NULL | |
6143 | || !htab->elf.dynamic_sections_created | |
6144 | || h->dynindx == -1) | |
de972ffa | 6145 | { |
a9585d22 AM |
6146 | tsec = htab->glink; |
6147 | toff = ent->glink_offset; | |
6148 | } | |
6149 | else | |
6150 | { | |
6151 | tsec = htab->plt; | |
6152 | toff = ent->plt.offset; | |
de972ffa AM |
6153 | } |
6154 | } | |
6155 | } | |
6156 | ||
25dbc73a AM |
6157 | /* If the branch and target are in the same section, you have |
6158 | no hope of adding stubs. We'll error out later should the | |
6159 | branch overflow. */ | |
6160 | if (tsec == isec) | |
6161 | continue; | |
6162 | ||
6163 | /* There probably isn't any reason to handle symbols in | |
6164 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
6165 | attribute for a code section, and we are only looking at | |
6166 | branches. However, implement it correctly here as a | |
6167 | reference for other target relax_section functions. */ | |
6168 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
6169 | { | |
6170 | /* At this stage in linking, no SEC_MERGE symbol has been | |
6171 | adjusted, so all references to such symbols need to be | |
6172 | passed through _bfd_merged_section_offset. (Later, in | |
6173 | relocate_section, all SEC_MERGE symbols *except* for | |
6174 | section symbols have been adjusted.) | |
6175 | ||
6176 | gas may reduce relocations against symbols in SEC_MERGE | |
6177 | sections to a relocation against the section symbol when | |
6178 | the original addend was zero. When the reloc is against | |
6179 | a section symbol we should include the addend in the | |
6180 | offset passed to _bfd_merged_section_offset, since the | |
6181 | location of interest is the original symbol. On the | |
6182 | other hand, an access to "sym+addend" where "sym" is not | |
6183 | a section symbol should not include the addend; Such an | |
6184 | access is presumed to be an offset from "sym"; The | |
6185 | location of interest is just "sym". */ | |
6186 | if (sym_type == STT_SECTION) | |
6187 | toff += irel->r_addend; | |
7619e7c7 | 6188 | |
25dbc73a AM |
6189 | toff = _bfd_merged_section_offset (abfd, &tsec, |
6190 | elf_section_data (tsec)->sec_info, | |
6191 | toff); | |
7619e7c7 | 6192 | |
25dbc73a AM |
6193 | if (sym_type != STT_SECTION) |
6194 | toff += irel->r_addend; | |
6195 | } | |
a6aa5195 AM |
6196 | /* PLTREL24 addends are special. */ |
6197 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 6198 | toff += irel->r_addend; |
7619e7c7 | 6199 | |
7de713b9 AM |
6200 | /* Attempted -shared link of non-pic code loses. */ |
6201 | if (tsec->output_section == NULL) | |
6202 | continue; | |
6203 | ||
25dbc73a AM |
6204 | roff = irel->r_offset; |
6205 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7619e7c7 | 6206 | |
25dbc73a | 6207 | /* If the branch is in range, no need to do anything. */ |
c8a1f254 NS |
6208 | if (tsec != bfd_und_section_ptr |
6209 | && (!link_info->relocatable | |
6210 | /* A relocatable link may have sections moved during | |
6211 | final link, so do not presume they remain in range. */ | |
01017ef8 NS |
6212 | || tsec->output_section == isec->output_section)) |
6213 | { | |
6214 | bfd_vma symaddr, reladdr; | |
6215 | ||
6216 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
6217 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
6218 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) | |
6219 | continue; | |
6220 | } | |
252b5132 | 6221 | |
25dbc73a AM |
6222 | /* Look for an existing fixup to this address. */ |
6223 | for (f = fixups; f ; f = f->next) | |
6224 | if (f->tsec == tsec && f->toff == toff) | |
6225 | break; | |
6226 | ||
6227 | if (f == NULL) | |
7619e7c7 | 6228 | { |
25dbc73a AM |
6229 | size_t size; |
6230 | unsigned long stub_rtype; | |
252b5132 | 6231 | |
25dbc73a AM |
6232 | val = trampoff - roff; |
6233 | if (val >= max_branch_offset) | |
6234 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
6235 | one. We'll report an error later. */ | |
6236 | continue; | |
252b5132 | 6237 | |
25dbc73a AM |
6238 | if (link_info->shared) |
6239 | { | |
6240 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
6241 | insn_offset = 12; | |
6242 | stub_rtype = R_PPC_RELAX32PC; | |
6243 | } | |
6244 | else | |
6245 | { | |
6246 | size = 4 * ARRAY_SIZE (stub_entry); | |
6247 | insn_offset = 0; | |
6248 | stub_rtype = R_PPC_RELAX32; | |
6249 | } | |
dc810e39 | 6250 | |
25dbc73a AM |
6251 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
6252 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
6253 | abort (); | |
d7128ce4 AM |
6254 | if (tsec == htab->plt |
6255 | || tsec == htab->glink) | |
25dbc73a | 6256 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; |
252b5132 | 6257 | |
25dbc73a AM |
6258 | /* Hijack the old relocation. Since we need two |
6259 | relocations for this use a "composite" reloc. */ | |
6260 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
6261 | stub_rtype); | |
6262 | irel->r_offset = trampoff + insn_offset; | |
e7d92e2e AM |
6263 | if (r_type == R_PPC_PLTREL24) |
6264 | irel->r_addend = 0; | |
252b5132 | 6265 | |
25dbc73a AM |
6266 | /* Record the fixup so we don't do it again this section. */ |
6267 | f = bfd_malloc (sizeof (*f)); | |
6268 | f->next = fixups; | |
6269 | f->tsec = tsec; | |
6270 | f->toff = toff; | |
6271 | f->trampoff = trampoff; | |
6272 | fixups = f; | |
252b5132 | 6273 | |
25dbc73a | 6274 | trampoff += size; |
9bc4e62b | 6275 | changes++; |
25dbc73a AM |
6276 | } |
6277 | else | |
6278 | { | |
6279 | val = f->trampoff - roff; | |
6280 | if (val >= max_branch_offset) | |
6281 | continue; | |
252b5132 | 6282 | |
25dbc73a AM |
6283 | /* Nop out the reloc, since we're finalizing things here. */ |
6284 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6285 | } | |
252b5132 | 6286 | |
25dbc73a AM |
6287 | /* Get the section contents. */ |
6288 | if (contents == NULL) | |
6289 | { | |
6290 | /* Get cached copy if it exists. */ | |
6291 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
6292 | contents = elf_section_data (isec)->this_hdr.contents; | |
6293 | else | |
6294 | { | |
6295 | /* Go get them off disk. */ | |
6296 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
6297 | goto error_return; | |
6298 | } | |
6299 | } | |
252b5132 | 6300 | |
25dbc73a AM |
6301 | /* Fix up the existing branch to hit the trampoline. */ |
6302 | hit_addr = contents + roff; | |
6303 | switch (r_type) | |
6304 | { | |
6305 | case R_PPC_REL24: | |
6306 | case R_PPC_LOCAL24PC: | |
6307 | case R_PPC_PLTREL24: | |
6308 | t0 = bfd_get_32 (abfd, hit_addr); | |
6309 | t0 &= ~0x3fffffc; | |
6310 | t0 |= val & 0x3fffffc; | |
6311 | bfd_put_32 (abfd, t0, hit_addr); | |
6312 | break; | |
252b5132 | 6313 | |
25dbc73a AM |
6314 | case R_PPC_REL14: |
6315 | case R_PPC_REL14_BRTAKEN: | |
6316 | case R_PPC_REL14_BRNTAKEN: | |
6317 | t0 = bfd_get_32 (abfd, hit_addr); | |
6318 | t0 &= ~0xfffc; | |
6319 | t0 |= val & 0xfffc; | |
6320 | bfd_put_32 (abfd, t0, hit_addr); | |
6321 | break; | |
6322 | } | |
6323 | } | |
252b5132 | 6324 | |
25dbc73a | 6325 | /* Write out the trampolines. */ |
25dbc73a AM |
6326 | if (fixups != NULL) |
6327 | { | |
6328 | const int *stub; | |
6329 | bfd_byte *dest; | |
6330 | bfd_vma val; | |
6331 | int i, size; | |
252b5132 | 6332 | |
25dbc73a AM |
6333 | do |
6334 | { | |
6335 | struct one_fixup *f = fixups; | |
6336 | fixups = fixups->next; | |
6337 | free (f); | |
6338 | } | |
6339 | while (fixups); | |
252b5132 | 6340 | |
515ef31d | 6341 | contents = bfd_realloc_or_free (contents, trampoff); |
25dbc73a AM |
6342 | if (contents == NULL) |
6343 | goto error_return; | |
252b5132 | 6344 | |
25dbc73a AM |
6345 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
6346 | /* Branch around the trampolines. */ | |
e7d92e2e | 6347 | val = B + trampoff - isec->size; |
25dbc73a AM |
6348 | dest = contents + isec->size; |
6349 | isec->size = trampoff; | |
6350 | bfd_put_32 (abfd, val, dest); | |
6351 | dest += 4; | |
252b5132 | 6352 | |
25dbc73a AM |
6353 | if (link_info->shared) |
6354 | { | |
6355 | stub = shared_stub_entry; | |
6356 | size = ARRAY_SIZE (shared_stub_entry); | |
6357 | } | |
6358 | else | |
6359 | { | |
6360 | stub = stub_entry; | |
6361 | size = ARRAY_SIZE (stub_entry); | |
6362 | } | |
252b5132 | 6363 | |
25dbc73a AM |
6364 | i = 0; |
6365 | while (dest < contents + trampoff) | |
252b5132 | 6366 | { |
25dbc73a AM |
6367 | bfd_put_32 (abfd, stub[i], dest); |
6368 | i++; | |
6369 | if (i == size) | |
6370 | i = 0; | |
6371 | dest += 4; | |
252b5132 | 6372 | } |
25dbc73a | 6373 | BFD_ASSERT (i == 0); |
252b5132 RH |
6374 | } |
6375 | ||
25dbc73a AM |
6376 | if (isymbuf != NULL |
6377 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 6378 | { |
25dbc73a AM |
6379 | if (! link_info->keep_memory) |
6380 | free (isymbuf); | |
252b5132 | 6381 | else |
25dbc73a AM |
6382 | { |
6383 | /* Cache the symbols for elf_link_input_bfd. */ | |
6384 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
6385 | } | |
252b5132 RH |
6386 | } |
6387 | ||
25dbc73a AM |
6388 | if (contents != NULL |
6389 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6390 | { | |
9bc4e62b | 6391 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
6392 | free (contents); |
6393 | else | |
6394 | { | |
6395 | /* Cache the section contents for elf_link_input_bfd. */ | |
6396 | elf_section_data (isec)->this_hdr.contents = contents; | |
6397 | } | |
6398 | } | |
252b5132 | 6399 | |
9bc4e62b | 6400 | if (changes != 0) |
25dbc73a | 6401 | { |
9bc4e62b NS |
6402 | /* Append sufficient NOP relocs so we can write out relocation |
6403 | information for the trampolines. */ | |
6404 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) | |
6405 | * sizeof (*new_relocs)); | |
6406 | unsigned ix; | |
6407 | ||
6408 | if (!new_relocs) | |
6409 | goto error_return; | |
6410 | memcpy (new_relocs, internal_relocs, | |
6411 | isec->reloc_count * sizeof (*new_relocs)); | |
6412 | for (ix = changes; ix--;) | |
6413 | { | |
6414 | irel = new_relocs + ix + isec->reloc_count; | |
6415 | ||
6416 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6417 | } | |
6418 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 6419 | free (internal_relocs); |
9bc4e62b NS |
6420 | elf_section_data (isec)->relocs = new_relocs; |
6421 | isec->reloc_count += changes; | |
6422 | elf_section_data (isec)->rel_hdr.sh_size | |
6423 | += changes * elf_section_data (isec)->rel_hdr.sh_entsize; | |
25dbc73a | 6424 | } |
9bc4e62b NS |
6425 | else if (elf_section_data (isec)->relocs != internal_relocs) |
6426 | free (internal_relocs); | |
252b5132 | 6427 | |
9bc4e62b | 6428 | *again = changes != 0; |
c8a1f254 NS |
6429 | if (!*again && link_info->relocatable) |
6430 | { | |
6431 | /* Convert the internal relax relocs to external form. */ | |
6432 | for (irel = internal_relocs; irel < irelend; irel++) | |
6433 | if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32) | |
6434 | { | |
6435 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
6436 | ||
6437 | /* Rewrite the reloc and convert one of the trailing nop | |
6438 | relocs to describe this relocation. */ | |
6439 | BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE); | |
6440 | /* The relocs are at the bottom 2 bytes */ | |
6441 | irel[0].r_offset += 2; | |
6442 | memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel)); | |
6443 | irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
6444 | irel[1].r_offset += 4; | |
6445 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
6446 | irel++; | |
6447 | } | |
6448 | } | |
6449 | ||
b34976b6 | 6450 | return TRUE; |
25dbc73a AM |
6451 | |
6452 | error_return: | |
6453 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
6454 | free (isymbuf); | |
6455 | if (contents != NULL | |
6456 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6457 | free (contents); | |
6458 | if (internal_relocs != NULL | |
6459 | && elf_section_data (isec)->relocs != internal_relocs) | |
6460 | free (internal_relocs); | |
6461 | return FALSE; | |
252b5132 | 6462 | } |
252b5132 | 6463 | \f |
8a696751 AM |
6464 | /* What to do when ld finds relocations against symbols defined in |
6465 | discarded sections. */ | |
6466 | ||
6467 | static unsigned int | |
6468 | ppc_elf_action_discarded (asection *sec) | |
6469 | { | |
6470 | if (strcmp (".fixup", sec->name) == 0) | |
6471 | return 0; | |
6472 | ||
6473 | if (strcmp (".got2", sec->name) == 0) | |
6474 | return 0; | |
6475 | ||
6476 | return _bfd_elf_default_action_discarded (sec); | |
6477 | } | |
c9a2f333 | 6478 | \f |
25dbc73a | 6479 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 6480 | |
25dbc73a | 6481 | static bfd_vma |
76750a2f | 6482 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
6483 | elf_linker_section_t *lsect, |
6484 | struct elf_link_hash_entry *h, | |
6485 | bfd_vma relocation, | |
2bb04cf2 | 6486 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
6487 | { |
6488 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 6489 | |
25dbc73a | 6490 | BFD_ASSERT (lsect != NULL); |
252b5132 | 6491 | |
25dbc73a | 6492 | if (h != NULL) |
252b5132 | 6493 | { |
25dbc73a AM |
6494 | /* Handle global symbol. */ |
6495 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 6496 | |
25dbc73a | 6497 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
6498 | BFD_ASSERT (eh->elf.def_regular); |
6499 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
6500 | } |
6501 | else | |
6502 | { | |
6503 | /* Handle local symbol. */ | |
6504 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 6505 | |
0c8d6e5c | 6506 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 6507 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
6508 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
6509 | } | |
252b5132 | 6510 | |
76750a2f AM |
6511 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
6512 | rel->r_addend, | |
6513 | lsect); | |
6514 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 6515 | |
76750a2f AM |
6516 | /* Offset will always be a multiple of four, so use the bottom bit |
6517 | as a "written" flag. */ | |
6518 | if ((linker_section_ptr->offset & 1) == 0) | |
6519 | { | |
6520 | bfd_put_32 (lsect->section->owner, | |
6521 | relocation + linker_section_ptr->addend, | |
6522 | lsect->section->contents + linker_section_ptr->offset); | |
6523 | linker_section_ptr->offset += 1; | |
252b5132 RH |
6524 | } |
6525 | ||
bd6c6e2b AM |
6526 | relocation = (lsect->section->output_section->vma |
6527 | + lsect->section->output_offset | |
76750a2f | 6528 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 6529 | - SYM_VAL (lsect->sym)); |
252b5132 | 6530 | |
25dbc73a AM |
6531 | #ifdef DEBUG |
6532 | fprintf (stderr, | |
6533 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
6534 | lsect->name, (long) relocation, (long) relocation); | |
6535 | #endif | |
252b5132 | 6536 | |
bd6c6e2b | 6537 | return relocation; |
252b5132 | 6538 | } |
25dbc73a | 6539 | |
e054468f AM |
6540 | #define PPC_LO(v) ((v) & 0xffff) |
6541 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6542 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6543 | ||
6544 | static void | |
a7f2871e | 6545 | write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p, |
e054468f AM |
6546 | struct bfd_link_info *info) |
6547 | { | |
6548 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6549 | bfd *output_bfd = info->output_bfd; | |
6550 | bfd_vma plt; | |
e054468f AM |
6551 | |
6552 | plt = ((ent->plt.offset & ~1) | |
6553 | + plt_sec->output_section->vma | |
6554 | + plt_sec->output_offset); | |
e054468f | 6555 | |
a877a2b6 | 6556 | if (info->shared) |
e054468f AM |
6557 | { |
6558 | bfd_vma got = 0; | |
6559 | ||
6560 | if (ent->addend >= 32768) | |
6561 | got = (ent->addend | |
6562 | + ent->sec->output_section->vma | |
6563 | + ent->sec->output_offset); | |
6564 | else if (htab->elf.hgot != NULL) | |
6565 | got = SYM_VAL (htab->elf.hgot); | |
6566 | ||
6567 | plt -= got; | |
6568 | ||
6569 | if (plt + 0x8000 < 0x10000) | |
6570 | { | |
6571 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
6572 | p += 4; | |
6573 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6574 | p += 4; | |
6575 | bfd_put_32 (output_bfd, BCTR, p); | |
6576 | p += 4; | |
6577 | bfd_put_32 (output_bfd, NOP, p); | |
6578 | p += 4; | |
6579 | } | |
6580 | else | |
6581 | { | |
6582 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
6583 | p += 4; | |
6584 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
6585 | p += 4; | |
6586 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6587 | p += 4; | |
6588 | bfd_put_32 (output_bfd, BCTR, p); | |
6589 | p += 4; | |
6590 | } | |
6591 | } | |
6592 | else | |
6593 | { | |
6594 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
6595 | p += 4; | |
6596 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
6597 | p += 4; | |
6598 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6599 | p += 4; | |
6600 | bfd_put_32 (output_bfd, BCTR, p); | |
6601 | p += 4; | |
6602 | } | |
6603 | } | |
6604 | ||
bd6c6e2b AM |
6605 | /* Return true if symbol is defined statically. */ |
6606 | ||
6607 | static bfd_boolean | |
6608 | is_static_defined (struct elf_link_hash_entry *h) | |
6609 | { | |
6610 | return ((h->root.type == bfd_link_hash_defined | |
6611 | || h->root.type == bfd_link_hash_defweak) | |
6612 | && h->root.u.def.section != NULL | |
6613 | && h->root.u.def.section->output_section != NULL); | |
6614 | } | |
6615 | ||
252b5132 RH |
6616 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
6617 | to handle the relocations for a section. | |
6618 | ||
6619 | The relocs are always passed as Rela structures; if the section | |
6620 | actually uses Rel structures, the r_addend field will always be | |
6621 | zero. | |
6622 | ||
6623 | This function is responsible for adjust the section contents as | |
6624 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 6625 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
6626 | necessary. |
6627 | ||
6628 | This function does not have to worry about setting the reloc | |
6629 | address or the reloc symbol index. | |
6630 | ||
6631 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
6632 | ||
6633 | LOCAL_SECTIONS is an array giving the section in the input file | |
6634 | corresponding to the st_shndx field of each local symbol. | |
6635 | ||
6636 | The global hash table entry for the global symbols can be found | |
6637 | via elf_sym_hashes (input_bfd). | |
6638 | ||
1049f94e | 6639 | When generating relocatable output, this function must handle |
252b5132 RH |
6640 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
6641 | going to be the section symbol corresponding to the output | |
6642 | section, which means that the addend must be adjusted | |
6643 | accordingly. */ | |
6644 | ||
b34976b6 | 6645 | static bfd_boolean |
55fd94b0 AM |
6646 | ppc_elf_relocate_section (bfd *output_bfd, |
6647 | struct bfd_link_info *info, | |
6648 | bfd *input_bfd, | |
6649 | asection *input_section, | |
6650 | bfd_byte *contents, | |
6651 | Elf_Internal_Rela *relocs, | |
6652 | Elf_Internal_Sym *local_syms, | |
6653 | asection **local_sections) | |
252b5132 | 6654 | { |
7619e7c7 AM |
6655 | Elf_Internal_Shdr *symtab_hdr; |
6656 | struct elf_link_hash_entry **sym_hashes; | |
6657 | struct ppc_elf_link_hash_table *htab; | |
6658 | Elf_Internal_Rela *rel; | |
6659 | Elf_Internal_Rela *relend; | |
6660 | Elf_Internal_Rela outrel; | |
6661 | bfd_byte *loc; | |
a6aa5195 | 6662 | asection *got2, *sreloc = NULL; |
252b5132 | 6663 | bfd_vma *local_got_offsets; |
b34976b6 | 6664 | bfd_boolean ret = TRUE; |
4fe5ca5b | 6665 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
3348747a | 6666 | bfd_boolean is_vxworks_tls; |
b34976b6 | 6667 | |
252b5132 | 6668 | #ifdef DEBUG |
d003868e AM |
6669 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
6670 | "%ld relocations%s", | |
6671 | input_bfd, input_section, | |
6672 | (long) input_section->reloc_count, | |
6673 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
6674 | #endif |
6675 | ||
a6aa5195 AM |
6676 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
6677 | ||
e47cd125 | 6678 | /* Initialize howto table if not already done. */ |
8da6118f | 6679 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
6680 | ppc_elf_howto_init (); |
6681 | ||
7619e7c7 | 6682 | htab = ppc_elf_hash_table (info); |
252b5132 | 6683 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 6684 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 6685 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
6686 | /* We have to handle relocations in vxworks .tls_vars sections |
6687 | specially, because the dynamic loader is 'weird'. */ | |
6688 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
6689 | && !strcmp (input_section->output_section->name, | |
6690 | ".tls_vars")); | |
7619e7c7 AM |
6691 | rel = relocs; |
6692 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
6693 | for (; rel < relend; rel++) |
6694 | { | |
7619e7c7 AM |
6695 | enum elf_ppc_reloc_type r_type; |
6696 | bfd_vma addend; | |
6697 | bfd_reloc_status_type r; | |
6698 | Elf_Internal_Sym *sym; | |
6699 | asection *sec; | |
6700 | struct elf_link_hash_entry *h; | |
6701 | const char *sym_name; | |
252b5132 RH |
6702 | reloc_howto_type *howto; |
6703 | unsigned long r_symndx; | |
6704 | bfd_vma relocation; | |
7619e7c7 | 6705 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
6706 | bfd_boolean unresolved_reloc; |
6707 | bfd_boolean warned; | |
6708 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 6709 | struct plt_entry **ifunc; |
7619e7c7 | 6710 | |
55fd94b0 AM |
6711 | r_type = ELF32_R_TYPE (rel->r_info); |
6712 | sym = NULL; | |
6713 | sec = NULL; | |
6714 | h = NULL; | |
7619e7c7 AM |
6715 | unresolved_reloc = FALSE; |
6716 | warned = FALSE; | |
252b5132 | 6717 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 6718 | |
252b5132 RH |
6719 | if (r_symndx < symtab_hdr->sh_info) |
6720 | { | |
6721 | sym = local_syms + r_symndx; | |
6722 | sec = local_sections[r_symndx]; | |
26c61ae5 | 6723 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 6724 | |
8517fae7 | 6725 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
6726 | } |
6727 | else | |
6728 | { | |
b2a8e766 AM |
6729 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
6730 | r_symndx, symtab_hdr, sym_hashes, | |
6731 | h, sec, relocation, | |
6732 | unresolved_reloc, warned); | |
9abc968f | 6733 | |
252b5132 | 6734 | sym_name = h->root.root.string; |
7619e7c7 AM |
6735 | } |
6736 | ||
ab96bf03 AM |
6737 | if (sec != NULL && elf_discarded_section (sec)) |
6738 | { | |
6739 | /* For relocs against symbols from removed linkonce sections, | |
6740 | or sections discarded by a linker script, we just want the | |
6741 | section contents zeroed. Avoid any special processing. */ | |
6742 | howto = NULL; | |
6743 | if (r_type < R_PPC_max) | |
6744 | howto = ppc_elf_howto_table[r_type]; | |
6745 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
6746 | rel->r_info = 0; | |
6747 | rel->r_addend = 0; | |
6748 | continue; | |
6749 | } | |
6750 | ||
6751 | if (info->relocatable) | |
6752 | { | |
6753 | if (got2 != NULL | |
6754 | && r_type == R_PPC_PLTREL24 | |
6755 | && rel->r_addend >= 32768) | |
6756 | { | |
6757 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
6758 | addend specifies the GOT pointer offset within .got2. */ | |
6759 | rel->r_addend += got2->output_offset; | |
6760 | } | |
6761 | continue; | |
6762 | } | |
6763 | ||
7619e7c7 AM |
6764 | /* TLS optimizations. Replace instruction sequences and relocs |
6765 | based on information we collected in tls_optimize. We edit | |
6766 | RELOCS so that --emit-relocs will output something sensible | |
6767 | for the final instruction stream. */ | |
6768 | tls_mask = 0; | |
6769 | tls_gd = 0; | |
727fc41e AM |
6770 | if (h != NULL) |
6771 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
6772 | else if (local_got_offsets != NULL) | |
7619e7c7 | 6773 | { |
e054468f | 6774 | struct plt_entry **local_plt; |
727fc41e | 6775 | char *lgot_masks; |
e054468f AM |
6776 | local_plt |
6777 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
6778 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 6779 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
6780 | } |
6781 | ||
6782 | /* Ensure reloc mapping code below stays sane. */ | |
6783 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
6784 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
6785 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
6786 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
6787 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
6788 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
6789 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
6790 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
6791 | abort (); | |
6792 | switch (r_type) | |
6793 | { | |
6794 | default: | |
6795 | break; | |
6796 | ||
6797 | case R_PPC_GOT_TPREL16: | |
6798 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 6799 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
6800 | && (tls_mask & TLS_TPREL) == 0) |
6801 | { | |
6802 | bfd_vma insn; | |
4fe5ca5b | 6803 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
6804 | insn &= 31 << 21; |
6805 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4fe5ca5b | 6806 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
6807 | r_type = R_PPC_TPREL16_HA; |
6808 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
6809 | } | |
6810 | break; | |
6811 | ||
6812 | case R_PPC_TLS: | |
e054468f | 6813 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
6814 | && (tls_mask & TLS_TPREL) == 0) |
6815 | { | |
6816 | bfd_vma insn, rtra; | |
6817 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
6818 | if ((insn & ((31 << 26) | (31 << 11))) | |
6819 | == ((31 << 26) | (2 << 11))) | |
6820 | rtra = insn & ((1 << 26) - (1 << 16)); | |
6821 | else if ((insn & ((31 << 26) | (31 << 16))) | |
6822 | == ((31 << 26) | (2 << 16))) | |
6823 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
6824 | else | |
6825 | abort (); | |
6826 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
6827 | /* add -> addi. */ | |
6828 | insn = 14 << 26; | |
6829 | else if ((insn & (31 << 1)) == 23 << 1 | |
6830 | && ((insn & (31 << 6)) < 14 << 6 | |
6831 | || ((insn & (31 << 6)) >= 16 << 6 | |
6832 | && (insn & (31 << 6)) < 24 << 6))) | |
6833 | /* load and store indexed -> dform. */ | |
6834 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
6835 | else if ((insn & (31 << 1)) == 21 << 1 | |
6836 | && (insn & (0x1a << 6)) == 0) | |
6837 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
6838 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
6839 | | ((insn >> 6) & 1)); | |
6840 | else if ((insn & (31 << 1)) == 21 << 1 | |
6841 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
6842 | /* lwax -> lwa. */ | |
6843 | insn = (58 << 26) | 2; | |
6844 | else | |
6845 | abort (); | |
6846 | insn |= rtra; | |
6847 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
6848 | r_type = R_PPC_TPREL16_LO; | |
6849 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 6850 | |
7619e7c7 | 6851 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
6852 | PPC_TPREL16_LO which is at low-order half-word. */ |
6853 | rel->r_offset += d_offset; | |
7619e7c7 AM |
6854 | } |
6855 | break; | |
6856 | ||
6857 | case R_PPC_GOT_TLSGD16_HI: | |
6858 | case R_PPC_GOT_TLSGD16_HA: | |
6859 | tls_gd = TLS_TPRELGD; | |
e054468f | 6860 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
6861 | goto tls_gdld_hi; |
6862 | break; | |
6863 | ||
6864 | case R_PPC_GOT_TLSLD16_HI: | |
6865 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 6866 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
6867 | { |
6868 | tls_gdld_hi: | |
6869 | if ((tls_mask & tls_gd) != 0) | |
6870 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
6871 | + R_PPC_GOT_TPREL16); | |
6872 | else | |
6873 | { | |
6874 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4fe5ca5b | 6875 | rel->r_offset -= d_offset; |
7619e7c7 AM |
6876 | r_type = R_PPC_NONE; |
6877 | } | |
6878 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
6879 | } | |
6880 | break; | |
6881 | ||
6882 | case R_PPC_GOT_TLSGD16: | |
6883 | case R_PPC_GOT_TLSGD16_LO: | |
6884 | tls_gd = TLS_TPRELGD; | |
e054468f | 6885 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 6886 | goto tls_ldgd_opt; |
7619e7c7 AM |
6887 | break; |
6888 | ||
6889 | case R_PPC_GOT_TLSLD16: | |
6890 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 6891 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 6892 | { |
3a71aa26 | 6893 | unsigned int insn1, insn2; |
b7fcf6f6 | 6894 | bfd_vma offset; |
7619e7c7 | 6895 | |
b7fcf6f6 | 6896 | tls_ldgd_opt: |
727fc41e AM |
6897 | offset = (bfd_vma) -1; |
6898 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
6899 | __tls_get_addr calls, we must trust that the call | |
6900 | stays with its arg setup insns, ie. that the next | |
6901 | reloc is the __tls_get_addr call associated with | |
6902 | the current reloc. Edit both insns. */ | |
6903 | if (input_section->has_tls_get_addr_call | |
6904 | && rel + 1 < relend | |
6905 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
6906 | htab->tls_get_addr)) | |
6907 | offset = rel[1].r_offset; | |
b7fcf6f6 AM |
6908 | if ((tls_mask & tls_gd) != 0) |
6909 | { | |
6910 | /* IE */ | |
3a71aa26 AM |
6911 | insn1 = bfd_get_32 (output_bfd, |
6912 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
6913 | insn1 &= (1 << 26) - 1; |
6914 | insn1 |= 32 << 26; /* lwz */ | |
727fc41e AM |
6915 | if (offset != (bfd_vma) -1) |
6916 | { | |
6917 | rel[1].r_info | |
6918 | = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), | |
6919 | R_PPC_NONE); | |
6920 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
6921 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
6922 | } | |
b7fcf6f6 AM |
6923 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
6924 | + R_PPC_GOT_TPREL16); | |
6925 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
6926 | } | |
6927 | else | |
6928 | { | |
6929 | /* LE */ | |
6930 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
7619e7c7 AM |
6931 | if (tls_gd == 0) |
6932 | { | |
b7fcf6f6 | 6933 | /* Was an LD reloc. */ |
1d483afe AM |
6934 | for (r_symndx = 0; |
6935 | r_symndx < symtab_hdr->sh_info; | |
6936 | r_symndx++) | |
6937 | if (local_sections[r_symndx] == sec) | |
6938 | break; | |
6939 | if (r_symndx >= symtab_hdr->sh_info) | |
6940 | r_symndx = 0; | |
b7fcf6f6 | 6941 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
6942 | if (r_symndx != 0) |
6943 | rel->r_addend -= (local_syms[r_symndx].st_value | |
6944 | + sec->output_offset | |
6945 | + sec->output_section->vma); | |
7619e7c7 | 6946 | } |
b7fcf6f6 AM |
6947 | r_type = R_PPC_TPREL16_HA; |
6948 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
6949 | if (offset != (bfd_vma) -1) |
6950 | { | |
6951 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
6952 | rel[1].r_offset = offset + d_offset; | |
6953 | rel[1].r_addend = rel->r_addend; | |
6954 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
6955 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
6956 | } | |
b7fcf6f6 AM |
6957 | } |
6958 | bfd_put_32 (output_bfd, insn1, | |
6959 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
6960 | if (tls_gd == 0) |
6961 | { | |
6962 | /* We changed the symbol on an LD reloc. Start over | |
6963 | in order to get h, sym, sec etc. right. */ | |
6964 | rel--; | |
6965 | continue; | |
7619e7c7 | 6966 | } |
252b5132 | 6967 | } |
7619e7c7 | 6968 | break; |
727fc41e AM |
6969 | |
6970 | case R_PPC_TLSGD: | |
e054468f | 6971 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
6972 | { |
6973 | unsigned int insn2; | |
6974 | bfd_vma offset = rel->r_offset; | |
6975 | ||
6976 | if ((tls_mask & TLS_TPRELGD) != 0) | |
6977 | { | |
6978 | /* IE */ | |
6979 | r_type = R_PPC_NONE; | |
6980 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
6981 | } | |
6982 | else | |
6983 | { | |
6984 | /* LE */ | |
6985 | r_type = R_PPC_TPREL16_LO; | |
6986 | rel->r_offset += d_offset; | |
6987 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
6988 | } | |
6989 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
6990 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
6991 | /* Zap the reloc on the _tls_get_addr call too. */ | |
6992 | BFD_ASSERT (offset == rel[1].r_offset); | |
6993 | rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), | |
6994 | R_PPC_NONE); | |
6995 | } | |
6996 | break; | |
6997 | ||
6998 | case R_PPC_TLSLD: | |
e054468f | 6999 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
7000 | { |
7001 | unsigned int insn2; | |
7002 | ||
7003 | for (r_symndx = 0; | |
7004 | r_symndx < symtab_hdr->sh_info; | |
7005 | r_symndx++) | |
7006 | if (local_sections[r_symndx] == sec) | |
7007 | break; | |
7008 | if (r_symndx >= symtab_hdr->sh_info) | |
7009 | r_symndx = 0; | |
7010 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
7011 | if (r_symndx != 0) | |
7012 | rel->r_addend -= (local_syms[r_symndx].st_value | |
7013 | + sec->output_offset | |
7014 | + sec->output_section->vma); | |
7015 | ||
7016 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7017 | rel->r_offset += d_offset; | |
7018 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7019 | bfd_put_32 (output_bfd, insn2, | |
7020 | contents + rel->r_offset - d_offset); | |
7021 | /* Zap the reloc on the _tls_get_addr call too. */ | |
7022 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
7023 | rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), | |
7024 | R_PPC_NONE); | |
7025 | rel--; | |
7026 | continue; | |
7027 | } | |
7028 | break; | |
7619e7c7 AM |
7029 | } |
7030 | ||
7031 | /* Handle other relocations that tweak non-addend part of insn. */ | |
7032 | branch_bit = 0; | |
7033 | switch (r_type) | |
7034 | { | |
7035 | default: | |
7036 | break; | |
7037 | ||
7038 | /* Branch taken prediction relocations. */ | |
7039 | case R_PPC_ADDR14_BRTAKEN: | |
7040 | case R_PPC_REL14_BRTAKEN: | |
7041 | branch_bit = BRANCH_PREDICT_BIT; | |
7042 | /* Fall thru */ | |
7043 | ||
4cc11e76 | 7044 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
7045 | case R_PPC_ADDR14_BRNTAKEN: |
7046 | case R_PPC_REL14_BRNTAKEN: | |
7047 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
7048 | insn &= ~BRANCH_PREDICT_BIT; | |
7049 | insn |= branch_bit; | |
7050 | ||
7051 | from = (rel->r_offset | |
7052 | + input_section->output_offset | |
7053 | + input_section->output_section->vma); | |
7054 | ||
7055 | /* Invert 'y' bit if not the default. */ | |
7056 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
7057 | insn ^= BRANCH_PREDICT_BIT; | |
7058 | ||
7059 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
7060 | break; | |
252b5132 RH |
7061 | } |
7062 | ||
e054468f | 7063 | ifunc = NULL; |
25f23106 | 7064 | if (!htab->is_vxworks) |
e054468f | 7065 | { |
de972ffa AM |
7066 | struct plt_entry *ent; |
7067 | ||
e054468f AM |
7068 | if (h != NULL) |
7069 | { | |
7070 | if (h->type == STT_GNU_IFUNC) | |
7071 | ifunc = &h->plt.plist; | |
7072 | } | |
de972ffa AM |
7073 | else if (local_got_offsets != NULL |
7074 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 7075 | { |
de972ffa | 7076 | struct plt_entry **local_plt; |
e054468f | 7077 | |
de972ffa AM |
7078 | local_plt = (struct plt_entry **) (local_got_offsets |
7079 | + symtab_hdr->sh_info); | |
7080 | ifunc = local_plt + r_symndx; | |
e054468f | 7081 | } |
e054468f | 7082 | |
de972ffa AM |
7083 | ent = NULL; |
7084 | if (ifunc != NULL | |
7085 | && (!info->shared | |
7086 | || is_branch_reloc (r_type))) | |
7087 | { | |
7088 | addend = 0; | |
a877a2b6 | 7089 | if (r_type == R_PPC_PLTREL24 && info->shared) |
de972ffa AM |
7090 | addend = rel->r_addend; |
7091 | ent = find_plt_ent (ifunc, got2, addend); | |
7092 | } | |
7093 | if (ent != NULL) | |
7094 | { | |
e054468f AM |
7095 | if (h == NULL && (ent->plt.offset & 1) == 0) |
7096 | { | |
7097 | Elf_Internal_Rela rela; | |
7098 | bfd_byte *loc; | |
7099 | ||
7100 | rela.r_offset = (htab->iplt->output_section->vma | |
7101 | + htab->iplt->output_offset | |
7102 | + ent->plt.offset); | |
7103 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
7104 | rela.r_addend = relocation; | |
25f23106 AM |
7105 | loc = htab->reliplt->contents; |
7106 | loc += (htab->reliplt->reloc_count++ | |
7107 | * sizeof (Elf32_External_Rela)); | |
e054468f AM |
7108 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
7109 | ||
7110 | ent->plt.offset |= 1; | |
7111 | } | |
7112 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
7113 | { | |
a7f2871e AM |
7114 | unsigned char *p = ((unsigned char *) htab->glink->contents |
7115 | + ent->glink_offset); | |
7116 | write_glink_stub (ent, htab->iplt, p, info); | |
e054468f AM |
7117 | ent->glink_offset |= 1; |
7118 | } | |
7119 | ||
7120 | unresolved_reloc = FALSE; | |
7121 | if (htab->plt_type == PLT_NEW | |
7122 | || !htab->elf.dynamic_sections_created | |
7123 | || h == NULL) | |
7124 | relocation = (htab->glink->output_section->vma | |
7125 | + htab->glink->output_offset | |
7126 | + (ent->glink_offset & ~1)); | |
7127 | else | |
7128 | relocation = (htab->plt->output_section->vma | |
7129 | + htab->plt->output_offset | |
7130 | + ent->plt.offset); | |
7131 | } | |
7132 | } | |
7133 | ||
7619e7c7 AM |
7134 | addend = rel->r_addend; |
7135 | tls_type = 0; | |
7136 | howto = NULL; | |
55fd94b0 AM |
7137 | if (r_type < R_PPC_max) |
7138 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 7139 | switch (r_type) |
252b5132 RH |
7140 | { |
7141 | default: | |
7619e7c7 | 7142 | (*_bfd_error_handler) |
d003868e AM |
7143 | (_("%B: unknown relocation type %d for symbol %s"), |
7144 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
7145 | |
7146 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 7147 | ret = FALSE; |
252b5132 RH |
7148 | continue; |
7149 | ||
7619e7c7 AM |
7150 | case R_PPC_NONE: |
7151 | case R_PPC_TLS: | |
727fc41e AM |
7152 | case R_PPC_TLSGD: |
7153 | case R_PPC_TLSLD: | |
7619e7c7 AM |
7154 | case R_PPC_EMB_MRKREF: |
7155 | case R_PPC_GNU_VTINHERIT: | |
7156 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
7157 | continue; |
7158 | ||
7619e7c7 AM |
7159 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
7160 | address in the GOT as relocation value instead of the | |
7161 | symbol's value itself. Also, create a GOT entry for the | |
7162 | symbol and put the symbol value there. */ | |
7163 | case R_PPC_GOT_TLSGD16: | |
7164 | case R_PPC_GOT_TLSGD16_LO: | |
7165 | case R_PPC_GOT_TLSGD16_HI: | |
7166 | case R_PPC_GOT_TLSGD16_HA: | |
7167 | tls_type = TLS_TLS | TLS_GD; | |
7168 | goto dogot; | |
7169 | ||
7170 | case R_PPC_GOT_TLSLD16: | |
7171 | case R_PPC_GOT_TLSLD16_LO: | |
7172 | case R_PPC_GOT_TLSLD16_HI: | |
7173 | case R_PPC_GOT_TLSLD16_HA: | |
7174 | tls_type = TLS_TLS | TLS_LD; | |
7175 | goto dogot; | |
7176 | ||
7177 | case R_PPC_GOT_TPREL16: | |
7178 | case R_PPC_GOT_TPREL16_LO: | |
7179 | case R_PPC_GOT_TPREL16_HI: | |
7180 | case R_PPC_GOT_TPREL16_HA: | |
7181 | tls_type = TLS_TLS | TLS_TPREL; | |
7182 | goto dogot; | |
7183 | ||
7184 | case R_PPC_GOT_DTPREL16: | |
7185 | case R_PPC_GOT_DTPREL16_LO: | |
7186 | case R_PPC_GOT_DTPREL16_HI: | |
7187 | case R_PPC_GOT_DTPREL16_HA: | |
7188 | tls_type = TLS_TLS | TLS_DTPREL; | |
7189 | goto dogot; | |
7190 | ||
7191 | case R_PPC_GOT16: | |
7192 | case R_PPC_GOT16_LO: | |
7193 | case R_PPC_GOT16_HI: | |
7194 | case R_PPC_GOT16_HA: | |
727fc41e | 7195 | tls_mask = 0; |
7619e7c7 AM |
7196 | dogot: |
7197 | { | |
7198 | /* Relocation is to the entry for this symbol in the global | |
7199 | offset table. */ | |
7200 | bfd_vma off; | |
7201 | bfd_vma *offp; | |
7202 | unsigned long indx; | |
7203 | ||
7204 | if (htab->got == NULL) | |
7205 | abort (); | |
7206 | ||
7207 | indx = 0; | |
7208 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 7209 | && (h == NULL |
f5385ebf | 7210 | || !h->def_dynamic)) |
7619e7c7 AM |
7211 | offp = &htab->tlsld_got.offset; |
7212 | else if (h != NULL) | |
7213 | { | |
7214 | bfd_boolean dyn; | |
7215 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 7216 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
7217 | || (info->shared |
7218 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
7219 | /* This is actually a static link, or it is a | |
7220 | -Bsymbolic link and the symbol is defined | |
7221 | locally, or the symbol was forced to be local | |
7222 | because of a version file. */ | |
7223 | ; | |
7224 | else | |
7225 | { | |
7226 | indx = h->dynindx; | |
7227 | unresolved_reloc = FALSE; | |
7228 | } | |
7229 | offp = &h->got.offset; | |
7230 | } | |
7231 | else | |
7232 | { | |
7233 | if (local_got_offsets == NULL) | |
7234 | abort (); | |
7235 | offp = &local_got_offsets[r_symndx]; | |
7236 | } | |
7237 | ||
7238 | /* The offset must always be a multiple of 4. We use the | |
7239 | least significant bit to record whether we have already | |
7240 | processed this entry. */ | |
7241 | off = *offp; | |
7242 | if ((off & 1) != 0) | |
7243 | off &= ~1; | |
7244 | else | |
7245 | { | |
70bccea4 AM |
7246 | unsigned int tls_m = (tls_mask |
7247 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
7248 | | TLS_TPREL | TLS_TPRELGD)); | |
7249 | ||
7250 | if (offp == &htab->tlsld_got.offset) | |
7251 | tls_m = TLS_LD; | |
7252 | else if (h == NULL | |
f5385ebf | 7253 | || !h->def_dynamic) |
70bccea4 AM |
7254 | tls_m &= ~TLS_LD; |
7255 | ||
7256 | /* We might have multiple got entries for this sym. | |
7257 | Initialize them all. */ | |
7258 | do | |
7619e7c7 | 7259 | { |
70bccea4 AM |
7260 | int tls_ty = 0; |
7261 | ||
7262 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 7263 | { |
70bccea4 AM |
7264 | tls_ty = TLS_TLS | TLS_LD; |
7265 | tls_m &= ~TLS_LD; | |
7266 | } | |
7267 | else if ((tls_m & TLS_GD) != 0) | |
7268 | { | |
7269 | tls_ty = TLS_TLS | TLS_GD; | |
7270 | tls_m &= ~TLS_GD; | |
7271 | } | |
7272 | else if ((tls_m & TLS_DTPREL) != 0) | |
7273 | { | |
7274 | tls_ty = TLS_TLS | TLS_DTPREL; | |
7275 | tls_m &= ~TLS_DTPREL; | |
7276 | } | |
7277 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
7278 | { | |
7279 | tls_ty = TLS_TLS | TLS_TPREL; | |
7280 | tls_m = 0; | |
7619e7c7 | 7281 | } |
7619e7c7 | 7282 | |
70bccea4 | 7283 | /* Generate relocs for the dynamic linker. */ |
4e795f50 | 7284 | if ((info->shared || indx != 0) |
d6e14abc AM |
7285 | && (offp == &htab->tlsld_got.offset |
7286 | || h == NULL | |
4e795f50 AM |
7287 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
7288 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 7289 | { |
91e21fb7 AM |
7290 | asection *rsec = htab->relgot; |
7291 | ||
70bccea4 AM |
7292 | outrel.r_offset = (htab->got->output_section->vma |
7293 | + htab->got->output_offset | |
7294 | + off); | |
e515b051 | 7295 | outrel.r_addend = 0; |
70bccea4 AM |
7296 | if (tls_ty & (TLS_LD | TLS_GD)) |
7297 | { | |
7298 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
7299 | if (tls_ty == (TLS_TLS | TLS_GD)) |
7300 | { | |
25f23106 AM |
7301 | loc = rsec->contents; |
7302 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7303 | * sizeof (Elf32_External_Rela)); |
7304 | bfd_elf32_swap_reloca_out (output_bfd, | |
7305 | &outrel, loc); | |
e515b051 | 7306 | outrel.r_offset += 4; |
70bccea4 AM |
7307 | outrel.r_info |
7308 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
7309 | } |
7310 | } | |
7311 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
7312 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
7313 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
7314 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 7315 | else if (indx != 0) |
70bccea4 | 7316 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
7317 | else if (ifunc != NULL) |
7318 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
7319 | else | |
7320 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 7321 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
7322 | { |
7323 | outrel.r_addend += relocation; | |
7324 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 7325 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 7326 | } |
25f23106 AM |
7327 | loc = rsec->contents; |
7328 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7329 | * sizeof (Elf32_External_Rela)); |
7330 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
7331 | } |
7332 | ||
70bccea4 AM |
7333 | /* Init the .got section contents if we're not |
7334 | emitting a reloc. */ | |
7335 | else | |
7619e7c7 | 7336 | { |
70bccea4 AM |
7337 | bfd_vma value = relocation; |
7338 | ||
7b609f53 AM |
7339 | if (tls_ty == (TLS_TLS | TLS_LD)) |
7340 | value = 1; | |
7341 | else if (tls_ty != 0) | |
70bccea4 | 7342 | { |
e1918d23 | 7343 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 7344 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 7345 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 7346 | |
7b609f53 AM |
7347 | if (tls_ty == (TLS_TLS | TLS_GD)) |
7348 | { | |
7349 | bfd_put_32 (output_bfd, value, | |
7350 | htab->got->contents + off + 4); | |
7351 | value = 1; | |
7352 | } | |
70bccea4 | 7353 | } |
70bccea4 AM |
7354 | bfd_put_32 (output_bfd, value, |
7355 | htab->got->contents + off); | |
7619e7c7 | 7356 | } |
70bccea4 AM |
7357 | |
7358 | off += 4; | |
7359 | if (tls_ty & (TLS_LD | TLS_GD)) | |
7360 | off += 4; | |
7619e7c7 | 7361 | } |
70bccea4 AM |
7362 | while (tls_m != 0); |
7363 | ||
7364 | off = *offp; | |
7365 | *offp = off | 1; | |
7619e7c7 AM |
7366 | } |
7367 | ||
7368 | if (off >= (bfd_vma) -2) | |
7369 | abort (); | |
7370 | ||
70bccea4 AM |
7371 | if ((tls_type & TLS_TLS) != 0) |
7372 | { | |
7373 | if (tls_type != (TLS_TLS | TLS_LD)) | |
7374 | { | |
7375 | if ((tls_mask & TLS_LD) != 0 | |
7376 | && !(h == NULL | |
f5385ebf | 7377 | || !h->def_dynamic)) |
70bccea4 AM |
7378 | off += 8; |
7379 | if (tls_type != (TLS_TLS | TLS_GD)) | |
7380 | { | |
7381 | if ((tls_mask & TLS_GD) != 0) | |
7382 | off += 8; | |
7383 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
7384 | { | |
7385 | if ((tls_mask & TLS_DTPREL) != 0) | |
7386 | off += 4; | |
7387 | } | |
7388 | } | |
7389 | } | |
7390 | } | |
7391 | ||
e87d4038 AM |
7392 | relocation = (htab->got->output_section->vma |
7393 | + htab->got->output_offset | |
7394 | + off | |
7395 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
7396 | |
7397 | /* Addends on got relocations don't make much sense. | |
7398 | x+off@got is actually x@got+off, and since the got is | |
7399 | generated by a hash table traversal, the value in the | |
7400 | got at entry m+n bears little relation to the entry m. */ | |
7401 | if (addend != 0) | |
7402 | (*_bfd_error_handler) | |
d003868e AM |
7403 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
7404 | input_bfd, | |
7405 | input_section, | |
7619e7c7 | 7406 | (long) rel->r_offset, |
7b609f53 | 7407 | howto->name, |
7619e7c7 AM |
7408 | sym_name); |
7409 | } | |
70bccea4 | 7410 | break; |
7619e7c7 | 7411 | |
252b5132 | 7412 | /* Relocations that need no special processing. */ |
7619e7c7 | 7413 | case R_PPC_LOCAL24PC: |
252b5132 RH |
7414 | /* It makes no sense to point a local relocation |
7415 | at a symbol not in this object. */ | |
7b609f53 | 7416 | if (unresolved_reloc) |
252b5132 | 7417 | { |
464e1740 ILT |
7418 | if (! (*info->callbacks->undefined_symbol) (info, |
7419 | h->root.root.string, | |
7420 | input_bfd, | |
7421 | input_section, | |
5cc7c785 | 7422 | rel->r_offset, |
b34976b6 AM |
7423 | TRUE)) |
7424 | return FALSE; | |
252b5132 RH |
7425 | continue; |
7426 | } | |
7427 | break; | |
7428 | ||
7619e7c7 AM |
7429 | case R_PPC_DTPREL16: |
7430 | case R_PPC_DTPREL16_LO: | |
7431 | case R_PPC_DTPREL16_HI: | |
7432 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 7433 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
7434 | break; |
7435 | ||
70bccea4 AM |
7436 | /* Relocations that may need to be propagated if this is a shared |
7437 | object. */ | |
7619e7c7 AM |
7438 | case R_PPC_TPREL16: |
7439 | case R_PPC_TPREL16_LO: | |
7440 | case R_PPC_TPREL16_HI: | |
7441 | case R_PPC_TPREL16_HA: | |
e1918d23 | 7442 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
7443 | /* The TPREL16 relocs shouldn't really be used in shared |
7444 | libs as they will result in DT_TEXTREL being set, but | |
7445 | support them anyway. */ | |
7446 | goto dodyn; | |
7447 | ||
7448 | case R_PPC_TPREL32: | |
e1918d23 | 7449 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
7450 | goto dodyn; |
7451 | ||
7452 | case R_PPC_DTPREL32: | |
e1918d23 | 7453 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
7454 | goto dodyn; |
7455 | ||
e515b051 AM |
7456 | case R_PPC_DTPMOD32: |
7457 | relocation = 1; | |
7458 | addend = 0; | |
7459 | goto dodyn; | |
7460 | ||
d7128ce4 AM |
7461 | case R_PPC_REL16: |
7462 | case R_PPC_REL16_LO: | |
7463 | case R_PPC_REL16_HI: | |
7464 | case R_PPC_REL16_HA: | |
7465 | break; | |
7466 | ||
7619e7c7 | 7467 | case R_PPC_REL32: |
625af618 AM |
7468 | if (h == NULL || h == htab->elf.hgot) |
7469 | break; | |
7470 | /* fall through */ | |
7471 | ||
7472 | case R_PPC_ADDR32: | |
7473 | case R_PPC_ADDR16: | |
7474 | case R_PPC_ADDR16_LO: | |
7475 | case R_PPC_ADDR16_HI: | |
7476 | case R_PPC_ADDR16_HA: | |
7477 | case R_PPC_UADDR32: | |
7478 | case R_PPC_UADDR16: | |
7479 | goto dodyn; | |
7480 | ||
7481 | case R_PPC_REL24: | |
7619e7c7 AM |
7482 | case R_PPC_REL14: |
7483 | case R_PPC_REL14_BRTAKEN: | |
7484 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
7485 | /* If these relocations are not to a named symbol, they can be |
7486 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 7487 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 7488 | || h == htab->elf.hgot) |
252b5132 | 7489 | break; |
70bccea4 | 7490 | /* fall through */ |
252b5132 | 7491 | |
7619e7c7 | 7492 | case R_PPC_ADDR24: |
7619e7c7 AM |
7493 | case R_PPC_ADDR14: |
7494 | case R_PPC_ADDR14_BRTAKEN: | |
7495 | case R_PPC_ADDR14_BRNTAKEN: | |
625af618 AM |
7496 | if (h != NULL && !info->shared) |
7497 | break; | |
7498 | /* fall through */ | |
7499 | ||
7619e7c7 | 7500 | dodyn: |
3348747a NS |
7501 | if ((input_section->flags & SEC_ALLOC) == 0 |
7502 | || is_vxworks_tls) | |
c87b5a93 | 7503 | break; |
c87b5a93 | 7504 | |
ee05f2fe | 7505 | if ((info->shared |
89200bf8 AM |
7506 | && !(h != NULL |
7507 | && ((h->root.type == bfd_link_hash_undefined | |
7508 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
7509 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
7510 | || (h->root.type == bfd_link_hash_undefweak | |
7511 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))) | |
1d483afe | 7512 | && (must_be_dyn_reloc (info, r_type) |
f6c52c13 | 7513 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
7514 | || (ELIMINATE_COPY_RELOCS |
7515 | && !info->shared | |
ee05f2fe AM |
7516 | && h != NULL |
7517 | && h->dynindx != -1 | |
f5385ebf | 7518 | && !h->non_got_ref |
de972ffa | 7519 | && !h->def_regular)) |
252b5132 | 7520 | { |
0bb2d96a | 7521 | int skip; |
252b5132 RH |
7522 | |
7523 | #ifdef DEBUG | |
55fd94b0 AM |
7524 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
7525 | "create relocation for %s\n", | |
70bccea4 AM |
7526 | (h && h->root.root.string |
7527 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
7528 | #endif |
7529 | ||
7530 | /* When generating a shared object, these relocations | |
70bccea4 AM |
7531 | are copied into the output file to be resolved at run |
7532 | time. */ | |
252b5132 RH |
7533 | if (sreloc == NULL) |
7534 | { | |
25f23106 AM |
7535 | sreloc = elf_section_data (input_section)->sreloc; |
7536 | if (!htab->elf.dynamic_sections_created) | |
7537 | sreloc = htab->reliplt; | |
83bac4b0 | 7538 | if (sreloc == NULL) |
b34976b6 | 7539 | return FALSE; |
252b5132 RH |
7540 | } |
7541 | ||
0bb2d96a | 7542 | skip = 0; |
c629eae0 JJ |
7543 | outrel.r_offset = |
7544 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
7545 | rel->r_offset); | |
0bb2d96a JJ |
7546 | if (outrel.r_offset == (bfd_vma) -1 |
7547 | || outrel.r_offset == (bfd_vma) -2) | |
7548 | skip = (int) outrel.r_offset; | |
252b5132 RH |
7549 | outrel.r_offset += (input_section->output_section->vma |
7550 | + input_section->output_offset); | |
7551 | ||
7552 | if (skip) | |
7553 | memset (&outrel, 0, sizeof outrel); | |
89200bf8 AM |
7554 | else if ((h != NULL |
7555 | && (h->root.type == bfd_link_hash_undefined | |
7556 | || h->root.type == bfd_link_hash_undefweak)) | |
7557 | || !SYMBOL_REFERENCES_LOCAL (info, h)) | |
252b5132 | 7558 | { |
7619e7c7 | 7559 | unresolved_reloc = FALSE; |
252b5132 RH |
7560 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
7561 | outrel.r_addend = rel->r_addend; | |
7562 | } | |
7563 | else | |
7564 | { | |
47388f4c AM |
7565 | outrel.r_addend = relocation + rel->r_addend; |
7566 | ||
25f23106 | 7567 | if (r_type != R_PPC_ADDR32) |
252b5132 | 7568 | { |
89200bf8 | 7569 | long indx = 0; |
252b5132 | 7570 | |
25f23106 AM |
7571 | if (ifunc != NULL) |
7572 | { | |
7573 | /* If we get here when building a static | |
7574 | executable, then the libc startup function | |
7575 | responsible for applying indirect function | |
7576 | relocations is going to complain about | |
7577 | the reloc type. | |
7578 | If we get here when building a dynamic | |
7579 | executable, it will be because we have | |
7580 | a text relocation. The dynamic loader | |
7581 | will set the text segment writable and | |
7582 | non-executable to apply text relocations. | |
7583 | So we'll segfault when trying to run the | |
7584 | indirection function to resolve the reloc. */ | |
7585 | (*_bfd_error_handler) | |
7586 | (_("%B(%A+0x%lx): relocation %s for indirect " | |
7587 | "function %s unsupported"), | |
7588 | input_bfd, | |
7589 | input_section, | |
7590 | (long) rel->r_offset, | |
7591 | howto->name, | |
7592 | sym_name); | |
7593 | ret = FALSE; | |
7594 | } | |
7595 | else if (r_symndx == 0 || bfd_is_abs_section (sec)) | |
89200bf8 | 7596 | ; |
252b5132 RH |
7597 | else if (sec == NULL || sec->owner == NULL) |
7598 | { | |
7599 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 7600 | ret = FALSE; |
252b5132 RH |
7601 | } |
7602 | else | |
7603 | { | |
7604 | asection *osec; | |
7605 | ||
47388f4c AM |
7606 | /* We are turning this relocation into one |
7607 | against a section symbol. It would be | |
7608 | proper to subtract the symbol's value, | |
7609 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
7610 | but ld.so expects buggy relocs. |
7611 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
7612 | osec = sec->output_section; |
7613 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
7614 | if (indx == 0) |
7615 | { | |
7616 | osec = htab->elf.text_index_section; | |
7617 | indx = elf_section_data (osec)->dynindx; | |
7618 | } | |
7619 | BFD_ASSERT (indx != 0); | |
252b5132 | 7620 | #ifdef DEBUG |
74541ad4 | 7621 | if (indx == 0) |
e460dd0d | 7622 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
7623 | indx, osec->name, osec->flags, |
7624 | h->root.root.string); | |
252b5132 RH |
7625 | #endif |
7626 | } | |
7627 | ||
7628 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 7629 | } |
25f23106 AM |
7630 | else if (ifunc != NULL) |
7631 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
7632 | else | |
7633 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
7634 | } |
7635 | ||
947216bf AM |
7636 | loc = sreloc->contents; |
7637 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
7638 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 7639 | |
2243deae | 7640 | if (skip == -1) |
252b5132 | 7641 | continue; |
2243deae L |
7642 | |
7643 | /* This reloc will be computed at runtime. We clear the memory | |
7644 | so that it contains predictable value. */ | |
7645 | if (! skip | |
7646 | && ((input_section->flags & SEC_ALLOC) != 0 | |
7647 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
7648 | { | |
7649 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
7650 | addend = 0; | |
7651 | break; | |
7652 | } | |
252b5132 | 7653 | } |
252b5132 RH |
7654 | break; |
7655 | ||
b4a38de6 AM |
7656 | case R_PPC_RELAX32PC_PLT: |
7657 | case R_PPC_RELAX32_PLT: | |
de972ffa AM |
7658 | if (h != NULL) |
7659 | { | |
7660 | struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, | |
a877a2b6 | 7661 | info->shared ? addend : 0); |
de972ffa AM |
7662 | if (htab->plt_type == PLT_NEW) |
7663 | relocation = (htab->glink->output_section->vma | |
7664 | + htab->glink->output_offset | |
7665 | + ent->glink_offset); | |
7666 | else | |
7667 | relocation = (htab->plt->output_section->vma | |
7668 | + htab->plt->output_offset | |
7669 | + ent->plt.offset); | |
7670 | } | |
b4a38de6 AM |
7671 | if (r_type == R_PPC_RELAX32_PLT) |
7672 | goto relax32; | |
7673 | /* Fall thru */ | |
7674 | ||
f31a141e AM |
7675 | case R_PPC_RELAX32PC: |
7676 | relocation -= (input_section->output_section->vma | |
7677 | + input_section->output_offset | |
7678 | + rel->r_offset - 4); | |
7679 | /* Fall thru */ | |
b4a38de6 | 7680 | |
deaaf2f3 | 7681 | case R_PPC_RELAX32: |
b4a38de6 | 7682 | relax32: |
9abc968f AM |
7683 | { |
7684 | unsigned long t0; | |
7685 | unsigned long t1; | |
7686 | ||
7687 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
7688 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
7689 | ||
7690 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
7691 | and R_PPC_ADDR16_LO here. */ | |
7692 | t0 &= ~0xffff; | |
7693 | t1 &= ~0xffff; | |
7694 | ||
7695 | /* t0 is HA, t1 is LO */ | |
7696 | relocation += addend; | |
7697 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
7698 | t1 |= relocation & 0xffff; | |
7699 | ||
7700 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
7701 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
9bc4e62b NS |
7702 | |
7703 | /* Rewrite the reloc and convert one of the trailing nop | |
7704 | relocs to describe this relocation. */ | |
7705 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
7706 | /* The relocs are at the bottom 2 bytes */ | |
7707 | rel[0].r_offset += 2; | |
7708 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
7709 | rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
7710 | rel[1].r_offset += 4; | |
7711 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
7712 | rel++; | |
9abc968f | 7713 | } |
8517fae7 | 7714 | continue; |
deaaf2f3 | 7715 | |
70bccea4 | 7716 | /* Indirect .sdata relocation. */ |
7619e7c7 | 7717 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 7718 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
7719 | if (!is_static_defined (htab->sdata[0].sym)) |
7720 | { | |
7721 | unresolved_reloc = TRUE; | |
7722 | break; | |
7723 | } | |
7619e7c7 | 7724 | relocation |
76750a2f AM |
7725 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
7726 | h, relocation, rel); | |
bd6c6e2b | 7727 | addend = 0; |
252b5132 RH |
7728 | break; |
7729 | ||
70bccea4 | 7730 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 7731 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 7732 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
7733 | if (!is_static_defined (htab->sdata[1].sym)) |
7734 | { | |
7735 | unresolved_reloc = TRUE; | |
7736 | break; | |
7737 | } | |
7619e7c7 | 7738 | relocation |
76750a2f AM |
7739 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
7740 | h, relocation, rel); | |
bd6c6e2b | 7741 | addend = 0; |
252b5132 RH |
7742 | break; |
7743 | ||
70bccea4 AM |
7744 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
7745 | section, not the actual VMA. This is appropriate when generating | |
7746 | an embedded ELF object, for which the .got section acts like the | |
7747 | AIX .toc section. */ | |
7619e7c7 | 7748 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
7749 | if (sec == NULL || sec->output_section == NULL) |
7750 | { | |
7751 | unresolved_reloc = TRUE; | |
7752 | break; | |
7753 | } | |
7754 | BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 7755 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 7756 | |
3b4f3a11 | 7757 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
7758 | break; |
7759 | ||
7619e7c7 | 7760 | case R_PPC_PLTREL24: |
e054468f | 7761 | if (h == NULL || ifunc != NULL) |
6d78d0b9 | 7762 | break; |
252b5132 | 7763 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 7764 | procedure linkage table. */ |
a6aa5195 | 7765 | { |
a877a2b6 AM |
7766 | struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, |
7767 | info->shared ? addend : 0); | |
a6aa5195 AM |
7768 | addend = 0; |
7769 | if (ent == NULL | |
7770 | || htab->plt == NULL) | |
7771 | { | |
7772 | /* We didn't make a PLT entry for this symbol. This | |
7773 | happens when statically linking PIC code, or when | |
7774 | using -Bsymbolic. */ | |
7775 | break; | |
7776 | } | |
252b5132 | 7777 | |
a6aa5195 | 7778 | unresolved_reloc = FALSE; |
4a3dc543 | 7779 | if (htab->plt_type == PLT_NEW) |
a6aa5195 AM |
7780 | relocation = (htab->glink->output_section->vma |
7781 | + htab->glink->output_offset | |
7782 | + ent->glink_offset); | |
7783 | else | |
7784 | relocation = (htab->plt->output_section->vma | |
7785 | + htab->plt->output_offset | |
7786 | + ent->plt.offset); | |
7787 | } | |
8da6118f | 7788 | break; |
252b5132 | 7789 | |
70bccea4 | 7790 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 7791 | case R_PPC_SDAREL16: |
252b5132 RH |
7792 | { |
7793 | const char *name; | |
bd6c6e2b | 7794 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 7795 | |
bd6c6e2b AM |
7796 | if (sec == NULL |
7797 | || sec->output_section == NULL | |
7798 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
7799 | { |
7800 | unresolved_reloc = TRUE; | |
7801 | break; | |
7802 | } | |
bd6c6e2b | 7803 | addend -= SYM_VAL (sda); |
3b4f3a11 | 7804 | |
252b5132 | 7805 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 7806 | if (! ((CONST_STRNEQ (name, ".sdata") |
5f819128 | 7807 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 7808 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 7809 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 | 7810 | { |
55fd94b0 | 7811 | (*_bfd_error_handler) |
d003868e | 7812 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 7813 | "in the wrong output section (%s)"), |
d003868e | 7814 | input_bfd, |
55fd94b0 AM |
7815 | sym_name, |
7816 | howto->name, | |
7817 | name); | |
252b5132 | 7818 | } |
252b5132 RH |
7819 | } |
7820 | break; | |
7821 | ||
70bccea4 | 7822 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 7823 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
7824 | { |
7825 | const char *name; | |
bd6c6e2b | 7826 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 7827 | |
bd6c6e2b AM |
7828 | if (sec == NULL |
7829 | || sec->output_section == NULL | |
7830 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
7831 | { |
7832 | unresolved_reloc = TRUE; | |
7833 | break; | |
7834 | } | |
bd6c6e2b | 7835 | addend -= SYM_VAL (sda); |
3b4f3a11 | 7836 | |
252b5132 | 7837 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 NC |
7838 | if (! (CONST_STRNEQ (name, ".sdata2") |
7839 | || CONST_STRNEQ (name, ".sbss2"))) | |
252b5132 | 7840 | { |
55fd94b0 | 7841 | (*_bfd_error_handler) |
d003868e | 7842 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 7843 | "in the wrong output section (%s)"), |
d003868e | 7844 | input_bfd, |
55fd94b0 AM |
7845 | sym_name, |
7846 | howto->name, | |
7847 | name); | |
252b5132 | 7848 | } |
252b5132 RH |
7849 | } |
7850 | break; | |
7851 | ||
70bccea4 | 7852 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
7853 | case R_PPC_EMB_SDA21: |
7854 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
7855 | { |
7856 | const char *name; | |
7857 | int reg; | |
bd6c6e2b | 7858 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 7859 | |
3b4f3a11 AM |
7860 | if (sec == NULL || sec->output_section == NULL) |
7861 | { | |
7862 | unresolved_reloc = TRUE; | |
7863 | break; | |
7864 | } | |
7865 | ||
252b5132 | 7866 | name = bfd_get_section_name (abfd, sec->output_section); |
0112cd26 | 7867 | if (((CONST_STRNEQ (name, ".sdata") |
5f819128 | 7868 | && (name[6] == 0 || name[6] == '.')) |
0112cd26 | 7869 | || (CONST_STRNEQ (name, ".sbss") |
5f819128 | 7870 | && (name[5] == 0 || name[5] == '.')))) |
252b5132 RH |
7871 | { |
7872 | reg = 13; | |
bd6c6e2b | 7873 | sda = htab->sdata[0].sym; |
252b5132 | 7874 | } |
0112cd26 NC |
7875 | else if (CONST_STRNEQ (name, ".sdata2") |
7876 | || CONST_STRNEQ (name, ".sbss2")) | |
252b5132 RH |
7877 | { |
7878 | reg = 2; | |
bd6c6e2b | 7879 | sda = htab->sdata[1].sym; |
252b5132 | 7880 | } |
8da6118f KH |
7881 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
7882 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
7883 | { |
7884 | reg = 0; | |
7885 | } | |
252b5132 RH |
7886 | else |
7887 | { | |
55fd94b0 | 7888 | (*_bfd_error_handler) |
d003868e | 7889 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 7890 | "in the wrong output section (%s)"), |
d003868e | 7891 | input_bfd, |
55fd94b0 AM |
7892 | sym_name, |
7893 | howto->name, | |
7894 | name); | |
252b5132 RH |
7895 | |
7896 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 7897 | ret = FALSE; |
252b5132 RH |
7898 | continue; |
7899 | } | |
7900 | ||
bd6c6e2b AM |
7901 | if (sda != NULL) |
7902 | { | |
7903 | if (!is_static_defined (sda)) | |
7904 | { | |
7905 | unresolved_reloc = TRUE; | |
7906 | break; | |
7907 | } | |
7908 | addend -= SYM_VAL (sda); | |
7909 | } | |
7910 | ||
252b5132 RH |
7911 | if (r_type == R_PPC_EMB_SDA21) |
7912 | { /* fill in register field */ | |
7619e7c7 | 7913 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 7914 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 7915 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
7916 | } |
7917 | } | |
7918 | break; | |
7919 | ||
70bccea4 | 7920 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
7921 | case R_PPC_SECTOFF: |
7922 | case R_PPC_SECTOFF_LO: | |
7923 | case R_PPC_SECTOFF_HI: | |
7924 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
7925 | if (sec == NULL || sec->output_section == NULL) |
7926 | { | |
7927 | unresolved_reloc = TRUE; | |
7928 | break; | |
7929 | } | |
252b5132 | 7930 | addend -= sec->output_section->vma; |
252b5132 RH |
7931 | break; |
7932 | ||
70bccea4 | 7933 | /* Negative relocations. */ |
7619e7c7 AM |
7934 | case R_PPC_EMB_NADDR32: |
7935 | case R_PPC_EMB_NADDR16: | |
7936 | case R_PPC_EMB_NADDR16_LO: | |
7937 | case R_PPC_EMB_NADDR16_HI: | |
7938 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 7939 | addend -= 2 * relocation; |
252b5132 RH |
7940 | break; |
7941 | ||
7619e7c7 AM |
7942 | case R_PPC_COPY: |
7943 | case R_PPC_GLOB_DAT: | |
7944 | case R_PPC_JMP_SLOT: | |
7945 | case R_PPC_RELATIVE: | |
e054468f | 7946 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
7947 | case R_PPC_PLT32: |
7948 | case R_PPC_PLTREL32: | |
7949 | case R_PPC_PLT16_LO: | |
7950 | case R_PPC_PLT16_HI: | |
7951 | case R_PPC_PLT16_HA: | |
7952 | case R_PPC_ADDR30: | |
7953 | case R_PPC_EMB_RELSEC16: | |
7954 | case R_PPC_EMB_RELST_LO: | |
7955 | case R_PPC_EMB_RELST_HI: | |
7956 | case R_PPC_EMB_RELST_HA: | |
7957 | case R_PPC_EMB_BIT_FLD: | |
7958 | (*_bfd_error_handler) | |
d003868e AM |
7959 | (_("%B: relocation %s is not yet supported for symbol %s."), |
7960 | input_bfd, | |
7619e7c7 AM |
7961 | howto->name, |
7962 | sym_name); | |
252b5132 RH |
7963 | |
7964 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 7965 | ret = FALSE; |
252b5132 | 7966 | continue; |
7619e7c7 | 7967 | } |
252b5132 | 7968 | |
7619e7c7 AM |
7969 | /* Do any further special processing. */ |
7970 | switch (r_type) | |
7971 | { | |
7972 | default: | |
7973 | break; | |
7974 | ||
7975 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 7976 | case R_PPC_REL16_HA: |
7619e7c7 AM |
7977 | case R_PPC_SECTOFF_HA: |
7978 | case R_PPC_TPREL16_HA: | |
7979 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
7980 | case R_PPC_EMB_NADDR16_HA: |
7981 | case R_PPC_EMB_RELST_HA: | |
7982 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 7983 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
7984 | 'sec' would be NULL, and we should leave the symbol |
7985 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
7986 | if (sec == NULL) |
7987 | break; | |
7988 | /* Fall thru */ | |
7989 | ||
7990 | case R_PPC_PLT16_HA: | |
7991 | case R_PPC_GOT16_HA: | |
7992 | case R_PPC_GOT_TLSGD16_HA: | |
7993 | case R_PPC_GOT_TLSLD16_HA: | |
7994 | case R_PPC_GOT_TPREL16_HA: | |
7995 | case R_PPC_GOT_DTPREL16_HA: | |
7996 | /* Add 0x10000 if sign bit in 0:15 is set. | |
7997 | Bits 0:15 are not used. */ | |
7998 | addend += 0x8000; | |
7619e7c7 | 7999 | break; |
252b5132 RH |
8000 | } |
8001 | ||
252b5132 | 8002 | #ifdef DEBUG |
55fd94b0 AM |
8003 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
8004 | "offset = %ld, addend = %ld\n", | |
252b5132 | 8005 | howto->name, |
8da6118f | 8006 | (int) r_type, |
252b5132 RH |
8007 | sym_name, |
8008 | r_symndx, | |
7619e7c7 | 8009 | (long) rel->r_offset, |
8da6118f | 8010 | (long) addend); |
252b5132 RH |
8011 | #endif |
8012 | ||
7619e7c7 AM |
8013 | if (unresolved_reloc |
8014 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 8015 | && h->def_dynamic)) |
7619e7c7 AM |
8016 | { |
8017 | (*_bfd_error_handler) | |
d003868e AM |
8018 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
8019 | input_bfd, | |
8020 | input_section, | |
7619e7c7 | 8021 | (long) rel->r_offset, |
7b609f53 | 8022 | howto->name, |
7619e7c7 AM |
8023 | sym_name); |
8024 | ret = FALSE; | |
8025 | } | |
8026 | ||
252b5132 RH |
8027 | r = _bfd_final_link_relocate (howto, |
8028 | input_bfd, | |
8029 | input_section, | |
8030 | contents, | |
7619e7c7 | 8031 | rel->r_offset, |
252b5132 RH |
8032 | relocation, |
8033 | addend); | |
8034 | ||
7619e7c7 | 8035 | if (r != bfd_reloc_ok) |
252b5132 | 8036 | { |
7619e7c7 | 8037 | if (r == bfd_reloc_overflow) |
252b5132 | 8038 | { |
7619e7c7 AM |
8039 | if (warned) |
8040 | continue; | |
8041 | if (h != NULL | |
8042 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
8043 | && howto->pc_relative) |
8044 | { | |
8045 | /* Assume this is a call protected by other code that | |
8046 | detect the symbol is undefined. If this is the case, | |
8047 | we can safely ignore the overflow. If not, the | |
8048 | program is hosed anyway, and a little warning isn't | |
8049 | going to help. */ | |
252b5132 | 8050 | |
dc1bc0c9 RH |
8051 | continue; |
8052 | } | |
252b5132 | 8053 | |
7619e7c7 | 8054 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 8055 | (h ? &h->root : NULL), |
7619e7c7 AM |
8056 | sym_name, |
8057 | howto->name, | |
8058 | rel->r_addend, | |
8059 | input_bfd, | |
8060 | input_section, | |
8061 | rel->r_offset)) | |
8062 | return FALSE; | |
dc1bc0c9 RH |
8063 | } |
8064 | else | |
8065 | { | |
7619e7c7 | 8066 | (*_bfd_error_handler) |
d003868e AM |
8067 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
8068 | input_bfd, input_section, | |
7b609f53 | 8069 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 8070 | ret = FALSE; |
252b5132 RH |
8071 | } |
8072 | } | |
8073 | } | |
8074 | ||
252b5132 RH |
8075 | #ifdef DEBUG |
8076 | fprintf (stderr, "\n"); | |
8077 | #endif | |
8078 | ||
8079 | return ret; | |
8080 | } | |
252b5132 | 8081 | \f |
25dbc73a AM |
8082 | /* Finish up dynamic symbol handling. We set the contents of various |
8083 | dynamic sections here. */ | |
c5fccbec | 8084 | |
b34976b6 | 8085 | static bfd_boolean |
25dbc73a AM |
8086 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
8087 | struct bfd_link_info *info, | |
8088 | struct elf_link_hash_entry *h, | |
8089 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 8090 | { |
25dbc73a | 8091 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
8092 | struct plt_entry *ent; |
8093 | bfd_boolean doneone; | |
e1a9cb8e | 8094 | |
25dbc73a AM |
8095 | #ifdef DEBUG |
8096 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
8097 | h->root.root.string); | |
8098 | #endif | |
e1a9cb8e | 8099 | |
25dbc73a AM |
8100 | htab = ppc_elf_hash_table (info); |
8101 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 8102 | |
a6aa5195 AM |
8103 | doneone = FALSE; |
8104 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
8105 | if (ent->plt.offset != (bfd_vma) -1) | |
8106 | { | |
8107 | if (!doneone) | |
8108 | { | |
8109 | Elf_Internal_Rela rela; | |
8110 | bfd_byte *loc; | |
8111 | bfd_vma reloc_index; | |
e1a9cb8e | 8112 | |
e054468f | 8113 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
8114 | || !htab->elf.dynamic_sections_created |
8115 | || h->dynindx == -1) | |
9d8504b1 PB |
8116 | reloc_index = ent->plt.offset / 4; |
8117 | else | |
8118 | { | |
8119 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
8120 | / htab->plt_slot_size); | |
8121 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 8122 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
8123 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
8124 | } | |
8125 | ||
a6aa5195 AM |
8126 | /* This symbol has an entry in the procedure linkage table. |
8127 | Set it up. */ | |
e054468f | 8128 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
8129 | && htab->elf.dynamic_sections_created |
8130 | && h->dynindx != -1) | |
a6aa5195 | 8131 | { |
9d8504b1 PB |
8132 | bfd_vma got_offset; |
8133 | const bfd_vma *plt_entry; | |
8134 | ||
8135 | /* The first three entries in .got.plt are reserved. */ | |
8136 | got_offset = (reloc_index + 3) * 4; | |
8137 | ||
8138 | /* Use the right PLT. */ | |
8139 | plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry | |
8140 | : ppc_elf_vxworks_plt_entry; | |
8141 | ||
8142 | /* Fill in the .plt on VxWorks. */ | |
8143 | if (info->shared) | |
8144 | { | |
9d8504b1 | 8145 | bfd_put_32 (output_bfd, |
e87d4038 | 8146 | plt_entry[0] | PPC_HA (got_offset), |
9d8504b1 PB |
8147 | htab->plt->contents + ent->plt.offset + 0); |
8148 | bfd_put_32 (output_bfd, | |
e87d4038 | 8149 | plt_entry[1] | PPC_LO (got_offset), |
9d8504b1 PB |
8150 | htab->plt->contents + ent->plt.offset + 4); |
8151 | } | |
8152 | else | |
8153 | { | |
e87d4038 | 8154 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
8155 | |
8156 | bfd_put_32 (output_bfd, | |
e87d4038 | 8157 | plt_entry[0] | PPC_HA (got_loc), |
9d8504b1 PB |
8158 | htab->plt->contents + ent->plt.offset + 0); |
8159 | bfd_put_32 (output_bfd, | |
e87d4038 | 8160 | plt_entry[1] | PPC_LO (got_loc), |
9d8504b1 PB |
8161 | htab->plt->contents + ent->plt.offset + 4); |
8162 | } | |
8163 | ||
8164 | bfd_put_32 (output_bfd, plt_entry[2], | |
8165 | htab->plt->contents + ent->plt.offset + 8); | |
8166 | bfd_put_32 (output_bfd, plt_entry[3], | |
8167 | htab->plt->contents + ent->plt.offset + 12); | |
8168 | ||
8169 | /* This instruction is an immediate load. The value loaded is | |
8170 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
8171 | start of the .rela.plt section. The value is stored in the | |
8172 | low-order 16 bits of the load instruction. */ | |
8173 | /* NOTE: It appears that this is now an index rather than a | |
8174 | prescaled offset. */ | |
8175 | bfd_put_32 (output_bfd, | |
8176 | plt_entry[4] | reloc_index, | |
8177 | htab->plt->contents + ent->plt.offset + 16); | |
8178 | /* This instruction is a PC-relative branch whose target is | |
8179 | the start of the PLT section. The address of this branch | |
8180 | instruction is 20 bytes beyond the start of this PLT entry. | |
8181 | The address is encoded in bits 6-29, inclusive. The value | |
8182 | stored is right-shifted by two bits, permitting a 26-bit | |
8183 | offset. */ | |
8184 | bfd_put_32 (output_bfd, | |
8185 | (plt_entry[5] | |
8186 | | (-(ent->plt.offset + 20) & 0x03fffffc)), | |
8187 | htab->plt->contents + ent->plt.offset + 20); | |
8188 | bfd_put_32 (output_bfd, plt_entry[6], | |
8189 | htab->plt->contents + ent->plt.offset + 24); | |
8190 | bfd_put_32 (output_bfd, plt_entry[7], | |
8191 | htab->plt->contents + ent->plt.offset + 28); | |
8192 | ||
8193 | /* Fill in the GOT entry corresponding to this PLT slot with | |
8194 | the address immediately after the the "bctr" instruction | |
8195 | in this PLT entry. */ | |
8196 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
8197 | + htab->plt->output_offset | |
8198 | + ent->plt.offset + 16), | |
8199 | htab->sgotplt->contents + got_offset); | |
8200 | ||
8201 | if (!info->shared) | |
8202 | { | |
8203 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
8204 | loc = htab->srelplt2->contents | |
8205 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
8206 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
8207 | * sizeof (Elf32_External_Rela)); | |
8208 | ||
8209 | /* Provide the @ha relocation for the first instruction. */ | |
8210 | rela.r_offset = (htab->plt->output_section->vma | |
8211 | + htab->plt->output_offset | |
8212 | + ent->plt.offset + 2); | |
636ce3f5 | 8213 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
8214 | R_PPC_ADDR16_HA); |
8215 | rela.r_addend = got_offset; | |
8216 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8217 | loc += sizeof (Elf32_External_Rela); | |
8218 | ||
8219 | /* Provide the @l relocation for the second instruction. */ | |
8220 | rela.r_offset = (htab->plt->output_section->vma | |
8221 | + htab->plt->output_offset | |
8222 | + ent->plt.offset + 6); | |
636ce3f5 | 8223 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
8224 | R_PPC_ADDR16_LO); |
8225 | rela.r_addend = got_offset; | |
8226 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8227 | loc += sizeof (Elf32_External_Rela); | |
8228 | ||
8229 | /* Provide a relocation for the GOT entry corresponding to this | |
8230 | PLT slot. Point it at the middle of the .plt entry. */ | |
8231 | rela.r_offset = (htab->sgotplt->output_section->vma | |
8232 | + htab->sgotplt->output_offset | |
8233 | + got_offset); | |
7325306f | 8234 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
8235 | R_PPC_ADDR32); |
8236 | rela.r_addend = ent->plt.offset + 16; | |
8237 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8238 | } | |
8239 | ||
8240 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
8241 | In particular, the offset for the relocation is not the | |
8242 | address of the PLT entry for this function, as specified | |
8243 | by the ABI. Instead, the offset is set to the address of | |
8244 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
8245 | rela.r_offset = (htab->sgotplt->output_section->vma | |
8246 | + htab->sgotplt->output_offset | |
8247 | + got_offset); | |
8248 | ||
a6aa5195 AM |
8249 | } |
8250 | else | |
8251 | { | |
e054468f | 8252 | asection *splt = htab->plt; |
25f23106 AM |
8253 | if (!htab->elf.dynamic_sections_created |
8254 | || h->dynindx == -1) | |
e054468f AM |
8255 | splt = htab->iplt; |
8256 | ||
8257 | rela.r_offset = (splt->output_section->vma | |
8258 | + splt->output_offset | |
9d8504b1 | 8259 | + ent->plt.offset); |
e054468f | 8260 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
8261 | || !htab->elf.dynamic_sections_created |
8262 | || h->dynindx == -1) | |
9d8504b1 PB |
8263 | { |
8264 | /* We don't need to fill in the .plt. The ppc dynamic | |
8265 | linker will fill it in. */ | |
8266 | } | |
8267 | else | |
8268 | { | |
8269 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
8270 | + htab->glink->output_section->vma | |
8271 | + htab->glink->output_offset); | |
8272 | bfd_put_32 (output_bfd, val, | |
e054468f | 8273 | splt->contents + ent->plt.offset); |
9d8504b1 | 8274 | } |
a6aa5195 | 8275 | } |
e1a9cb8e | 8276 | |
a6aa5195 | 8277 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 8278 | rela.r_addend = 0; |
e054468f AM |
8279 | if (!htab->elf.dynamic_sections_created |
8280 | || h->dynindx == -1) | |
8281 | { | |
8282 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
8283 | && h->def_regular | |
8284 | && (h->root.type == bfd_link_hash_defined | |
8285 | || h->root.type == bfd_link_hash_defweak)); | |
8286 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8287 | rela.r_addend = SYM_VAL (h); | |
8288 | } | |
8289 | else | |
8290 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 8291 | |
25f23106 AM |
8292 | if (!htab->elf.dynamic_sections_created |
8293 | || h->dynindx == -1) | |
8294 | loc = (htab->reliplt->contents | |
8295 | + (htab->reliplt->reloc_count++ | |
8296 | * sizeof (Elf32_External_Rela))); | |
e054468f | 8297 | else |
25f23106 AM |
8298 | loc = (htab->relplt->contents |
8299 | + reloc_index * sizeof (Elf32_External_Rela)); | |
a6aa5195 | 8300 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 8301 | |
a6aa5195 AM |
8302 | if (!h->def_regular) |
8303 | { | |
0eb4a168 AM |
8304 | /* Mark the symbol as undefined, rather than as |
8305 | defined in the .plt section. Leave the value if | |
8306 | there were any relocations where pointer equality | |
8307 | matters (this is a clue for the dynamic linker, to | |
8308 | make function pointer comparisons work between an | |
8309 | application and shared library), otherwise set it | |
8310 | to zero. */ | |
a6aa5195 | 8311 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 8312 | if (!h->pointer_equality_needed) |
a6aa5195 | 8313 | sym->st_value = 0; |
0eb4a168 AM |
8314 | else if (!h->ref_regular_nonweak) |
8315 | { | |
625af618 AM |
8316 | /* This breaks function pointer comparisons, but |
8317 | that is better than breaking tests for a NULL | |
0eb4a168 | 8318 | function pointer. */ |
0eb4a168 AM |
8319 | sym->st_value = 0; |
8320 | } | |
a6aa5195 | 8321 | } |
de972ffa AM |
8322 | else if (h->type == STT_GNU_IFUNC |
8323 | && !info->shared) | |
8324 | { | |
8325 | /* Set the value of ifunc symbols in a non-pie | |
8326 | executable to the glink entry. This is to avoid | |
8327 | text relocations. We can't do this for ifunc in | |
8328 | allocate_dynrelocs, as we do for normal dynamic | |
8329 | function symbols with plt entries, because we need | |
8330 | to keep the original value around for the ifunc | |
8331 | relocation. */ | |
8332 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
8333 | (output_bfd, htab->glink->output_section)); | |
8334 | sym->st_value = (ent->glink_offset + | |
8335 | htab->glink->output_offset | |
8336 | + htab->glink->output_section->vma); | |
8337 | } | |
a6aa5195 AM |
8338 | doneone = TRUE; |
8339 | } | |
e1a9cb8e | 8340 | |
e054468f | 8341 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
8342 | || !htab->elf.dynamic_sections_created |
8343 | || h->dynindx == -1) | |
a6aa5195 | 8344 | { |
a7f2871e | 8345 | unsigned char *p; |
e054468f | 8346 | asection *splt = htab->plt; |
25f23106 AM |
8347 | if (!htab->elf.dynamic_sections_created |
8348 | || h->dynindx == -1) | |
e054468f | 8349 | splt = htab->iplt; |
e1a9cb8e | 8350 | |
a7f2871e AM |
8351 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
8352 | ||
8353 | if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt) | |
8354 | { | |
8355 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
8356 | p += 4; | |
8357 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
8358 | p += 4; | |
8359 | bfd_put_32 (output_bfd, MR_0_3, p); | |
8360 | p += 4; | |
8361 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
8362 | p += 4; | |
8363 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
8364 | p += 4; | |
8365 | bfd_put_32 (output_bfd, BEQLR, p); | |
8366 | p += 4; | |
8367 | bfd_put_32 (output_bfd, MR_3_0, p); | |
8368 | p += 4; | |
8369 | bfd_put_32 (output_bfd, NOP, p); | |
8370 | p += 4; | |
8371 | } | |
8372 | ||
8373 | write_glink_stub (ent, splt, p, info); | |
e1a9cb8e | 8374 | |
a877a2b6 | 8375 | if (!info->shared) |
e054468f AM |
8376 | /* We only need one non-PIC glink stub. */ |
8377 | break; | |
a6aa5195 AM |
8378 | } |
8379 | else | |
8380 | break; | |
8381 | } | |
e1a9cb8e | 8382 | |
25dbc73a AM |
8383 | if (h->needs_copy) |
8384 | { | |
8385 | asection *s; | |
8386 | Elf_Internal_Rela rela; | |
8387 | bfd_byte *loc; | |
e1a9cb8e | 8388 | |
25dbc73a | 8389 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 8390 | |
25dbc73a AM |
8391 | #ifdef DEBUG |
8392 | fprintf (stderr, ", copy"); | |
8393 | #endif | |
e1a9cb8e | 8394 | |
25dbc73a | 8395 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 8396 | |
4dc4a9a5 | 8397 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
8398 | s = htab->relsbss; |
8399 | else | |
8400 | s = htab->relbss; | |
8401 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 8402 | |
e87d4038 | 8403 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
8404 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
8405 | rela.r_addend = 0; | |
8406 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
8407 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8408 | } | |
e1a9cb8e | 8409 | |
25dbc73a AM |
8410 | #ifdef DEBUG |
8411 | fprintf (stderr, "\n"); | |
8412 | #endif | |
e1a9cb8e | 8413 | |
25dbc73a | 8414 | /* Mark some specially defined symbols as absolute. */ |
9d8504b1 PB |
8415 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
8416 | || (!htab->is_vxworks | |
8417 | && (h == htab->elf.hgot | |
8418 | || strcmp (h->root.root.string, | |
8419 | "_PROCEDURE_LINKAGE_TABLE_") == 0))) | |
25dbc73a | 8420 | sym->st_shndx = SHN_ABS; |
e1a9cb8e | 8421 | |
25dbc73a AM |
8422 | return TRUE; |
8423 | } | |
8424 | \f | |
8425 | static enum elf_reloc_type_class | |
8426 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
e1a9cb8e | 8427 | { |
25dbc73a AM |
8428 | switch (ELF32_R_TYPE (rela->r_info)) |
8429 | { | |
8430 | case R_PPC_RELATIVE: | |
8431 | return reloc_class_relative; | |
8432 | case R_PPC_REL24: | |
8433 | case R_PPC_ADDR24: | |
8434 | case R_PPC_JMP_SLOT: | |
8435 | return reloc_class_plt; | |
8436 | case R_PPC_COPY: | |
8437 | return reloc_class_copy; | |
8438 | default: | |
8439 | return reloc_class_normal; | |
8440 | } | |
e1a9cb8e | 8441 | } |
25dbc73a AM |
8442 | \f |
8443 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 8444 | |
25dbc73a AM |
8445 | static bfd_boolean |
8446 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
8447 | struct bfd_link_info *info) | |
e1a9cb8e | 8448 | { |
25dbc73a | 8449 | asection *sdyn; |
9d8504b1 | 8450 | asection *splt; |
25dbc73a | 8451 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 8452 | bfd_vma got; |
e87d4038 AM |
8453 | bfd *dynobj; |
8454 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 8455 | |
25dbc73a AM |
8456 | #ifdef DEBUG |
8457 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
8458 | #endif | |
6b0817e5 | 8459 | |
25dbc73a | 8460 | htab = ppc_elf_hash_table (info); |
9d8504b1 PB |
8461 | dynobj = elf_hash_table (info)->dynobj; |
8462 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
8463 | if (htab->is_vxworks) | |
8464 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
8465 | else | |
8466 | splt = NULL; | |
e1a9cb8e | 8467 | |
1fe44d79 AM |
8468 | got = 0; |
8469 | if (htab->elf.hgot != NULL) | |
e87d4038 | 8470 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 8471 | |
25dbc73a | 8472 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 8473 | { |
25dbc73a | 8474 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 8475 | |
25dbc73a | 8476 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 8477 | |
25dbc73a AM |
8478 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
8479 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
8480 | for (; dyncon < dynconend; dyncon++) | |
8481 | { | |
8482 | Elf_Internal_Dyn dyn; | |
8483 | asection *s; | |
e1a9cb8e | 8484 | |
9d8504b1 | 8485 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 8486 | |
25dbc73a AM |
8487 | switch (dyn.d_tag) |
8488 | { | |
8489 | case DT_PLTGOT: | |
9d8504b1 PB |
8490 | if (htab->is_vxworks) |
8491 | s = htab->sgotplt; | |
8492 | else | |
8493 | s = htab->plt; | |
25dbc73a AM |
8494 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
8495 | break; | |
86bbe32f | 8496 | |
25dbc73a AM |
8497 | case DT_PLTRELSZ: |
8498 | dyn.d_un.d_val = htab->relplt->size; | |
8499 | break; | |
e1a9cb8e | 8500 | |
25dbc73a AM |
8501 | case DT_JMPREL: |
8502 | s = htab->relplt; | |
8503 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8504 | break; | |
2f89ff8d | 8505 | |
1fe44d79 AM |
8506 | case DT_PPC_GOT: |
8507 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
8508 | break; |
8509 | ||
9d8504b1 PB |
8510 | case DT_RELASZ: |
8511 | if (htab->is_vxworks) | |
8512 | { | |
8513 | if (htab->relplt) | |
8514 | dyn.d_un.d_ptr -= htab->relplt->size; | |
8515 | break; | |
8516 | } | |
8517 | continue; | |
8518 | ||
25dbc73a | 8519 | default: |
7a2b07ff NS |
8520 | if (htab->is_vxworks |
8521 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
8522 | break; | |
25dbc73a AM |
8523 | continue; |
8524 | } | |
4c45e5c9 | 8525 | |
25dbc73a AM |
8526 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
8527 | } | |
8528 | } | |
4c45e5c9 | 8529 | |
3b36f7e6 | 8530 | if (htab->got != NULL) |
25dbc73a | 8531 | { |
e79f5955 AM |
8532 | if (htab->elf.hgot->root.u.def.section == htab->got |
8533 | || htab->elf.hgot->root.u.def.section == htab->sgotplt) | |
e87d4038 | 8534 | { |
e79f5955 | 8535 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 8536 | |
e87d4038 AM |
8537 | p += htab->elf.hgot->root.u.def.value; |
8538 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
8539 | { |
8540 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
8541 | so that a function can easily find the address of | |
8542 | _GLOBAL_OFFSET_TABLE_. */ | |
8543 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
8544 | < htab->elf.hgot->root.u.def.section->size); | |
8545 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
8546 | } | |
3b36f7e6 | 8547 | |
e87d4038 | 8548 | if (sdyn != NULL) |
e79f5955 AM |
8549 | { |
8550 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
8551 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
8552 | < htab->elf.hgot->root.u.def.section->size); | |
8553 | bfd_put_32 (output_bfd, val, p); | |
8554 | } | |
e87d4038 AM |
8555 | } |
8556 | else | |
8557 | { | |
8558 | (*_bfd_error_handler) (_("%s not defined in linker created %s"), | |
8559 | htab->elf.hgot->root.root.string, | |
e79f5955 AM |
8560 | (htab->sgotplt != NULL |
8561 | ? htab->sgotplt->name : htab->got->name)); | |
e87d4038 AM |
8562 | bfd_set_error (bfd_error_bad_value); |
8563 | ret = FALSE; | |
8564 | } | |
25dbc73a AM |
8565 | |
8566 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
8567 | } | |
8568 | ||
9d8504b1 PB |
8569 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
8570 | if (splt && splt->size > 0) | |
8571 | { | |
8572 | /* Use the right PLT. */ | |
8573 | static const bfd_vma *plt_entry = NULL; | |
8574 | plt_entry = info->shared ? | |
8575 | ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry; | |
8576 | ||
8577 | if (!info->shared) | |
8578 | { | |
e87d4038 | 8579 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 8580 | |
e87d4038 | 8581 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 8582 | splt->contents + 0); |
e87d4038 | 8583 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
8584 | splt->contents + 4); |
8585 | } | |
8586 | else | |
8587 | { | |
8588 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
8589 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
8590 | } | |
8591 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
8592 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
8593 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
8594 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
8595 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
8596 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
8597 | ||
8598 | if (! info->shared) | |
8599 | { | |
8600 | Elf_Internal_Rela rela; | |
8601 | bfd_byte *loc; | |
8602 | ||
8603 | loc = htab->srelplt2->contents; | |
8604 | ||
8605 | /* Output the @ha relocation for the first instruction. */ | |
8606 | rela.r_offset = (htab->plt->output_section->vma | |
8607 | + htab->plt->output_offset | |
8608 | + 2); | |
636ce3f5 | 8609 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
8610 | rela.r_addend = 0; |
8611 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8612 | loc += sizeof (Elf32_External_Rela); | |
8613 | ||
8614 | /* Output the @l relocation for the second instruction. */ | |
8615 | rela.r_offset = (htab->plt->output_section->vma | |
8616 | + htab->plt->output_offset | |
8617 | + 6); | |
636ce3f5 | 8618 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
8619 | rela.r_addend = 0; |
8620 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
8621 | loc += sizeof (Elf32_External_Rela); | |
8622 | ||
8623 | /* Fix up the remaining relocations. They may have the wrong | |
8624 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
8625 | in which symbols were output. */ | |
8626 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
8627 | { | |
8628 | Elf_Internal_Rela rel; | |
8629 | ||
8630 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 8631 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
8632 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
8633 | loc += sizeof (Elf32_External_Rela); | |
8634 | ||
8635 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 8636 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
8637 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
8638 | loc += sizeof (Elf32_External_Rela); | |
8639 | ||
8640 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 8641 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
8642 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
8643 | loc += sizeof (Elf32_External_Rela); | |
8644 | } | |
8645 | } | |
8646 | } | |
8647 | ||
e054468f AM |
8648 | if (htab->glink != NULL |
8649 | && htab->glink->contents != NULL | |
8650 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
8651 | { |
8652 | unsigned char *p; | |
8653 | unsigned char *endp; | |
a6aa5195 | 8654 | bfd_vma res0; |
d7128ce4 | 8655 | unsigned int i; |
a6aa5195 AM |
8656 | |
8657 | /* | |
8658 | * PIC glink code is the following: | |
8659 | * | |
8660 | * # ith PLT code stub. | |
8661 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
8662 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
8663 | * mtctr 11 | |
8664 | * bctr | |
8665 | * | |
8666 | * # A table of branches, one for each plt entry. | |
176a0d42 | 8667 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
8668 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
8669 | * res_0: b PLTresolve | |
8670 | * res_1: b PLTresolve | |
8671 | * . | |
8672 | * # Some number of entries towards the end can be nops | |
8673 | * res_n_m3: nop | |
8674 | * res_n_m2: nop | |
8675 | * res_n_m1: | |
8676 | * | |
8677 | * PLTresolve: | |
8678 | * addis 11,11,(1f-res_0)@ha | |
8679 | * mflr 0 | |
8680 | * bcl 20,31,1f | |
8681 | * 1: addi 11,11,(1b-res_0)@l | |
8682 | * mflr 12 | |
8683 | * mtlr 0 | |
8684 | * sub 11,11,12 # r11 = index * 4 | |
8685 | * addis 12,12,(got+4-1b)@ha | |
8686 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
8687 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
8688 | * mtctr 0 | |
8689 | * add 0,11,11 | |
8690 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
8691 | * bctr | |
8692 | */ | |
8693 | static const unsigned int pic_plt_resolve[] = | |
8694 | { | |
8695 | ADDIS_11_11, | |
8696 | MFLR_0, | |
8697 | BCL_20_31, | |
8698 | ADDI_11_11, | |
8699 | MFLR_12, | |
8700 | MTLR_0, | |
8701 | SUB_11_11_12, | |
8702 | ADDIS_12_12, | |
8703 | LWZ_0_12, | |
8704 | LWZ_12_12, | |
8705 | MTCTR_0, | |
8706 | ADD_0_11_11, | |
8707 | ADD_11_0_11, | |
8708 | BCTR, | |
8709 | NOP, | |
8710 | NOP | |
8711 | }; | |
8712 | ||
176a0d42 AM |
8713 | /* |
8714 | * Non-PIC glink code is a little simpler. | |
8715 | * | |
8716 | * # ith PLT code stub. | |
8717 | * lis 11,(plt+(i-1)*4)@ha | |
8718 | * lwz 11,(plt+(i-1)*4)@l(11) | |
8719 | * mtctr 11 | |
8720 | * bctr | |
8721 | * | |
8722 | * The branch table is the same, then comes | |
8723 | * | |
8724 | * PLTresolve: | |
8725 | * lis 12,(got+4)@ha | |
8726 | * addis 11,11,(-res_0)@ha | |
8727 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve | |
8728 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
8729 | * mtctr 0 | |
8730 | * add 0,11,11 | |
8731 | * lwz 12,(got+8)@l(12) # got[2] contains the map address | |
8732 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
8733 | * bctr | |
8734 | */ | |
d7128ce4 AM |
8735 | static const unsigned int plt_resolve[] = |
8736 | { | |
a6aa5195 AM |
8737 | LIS_12, |
8738 | ADDIS_11_11, | |
8739 | LWZ_0_12, | |
8740 | ADDI_11_11, | |
d7128ce4 | 8741 | MTCTR_0, |
7e8aeb9a | 8742 | ADD_0_11_11, |
a6aa5195 | 8743 | LWZ_12_12, |
7e8aeb9a | 8744 | ADD_11_0_11, |
d7128ce4 AM |
8745 | BCTR, |
8746 | NOP, | |
8747 | NOP, | |
a6aa5195 AM |
8748 | NOP, |
8749 | NOP, | |
8750 | NOP, | |
8751 | NOP, | |
d7128ce4 AM |
8752 | NOP |
8753 | }; | |
8754 | ||
a6aa5195 AM |
8755 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
8756 | abort (); | |
8757 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
8758 | abort (); |
8759 | ||
a6aa5195 | 8760 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 8761 | and perhaps some padding. */ |
a6aa5195 AM |
8762 | p = htab->glink->contents; |
8763 | p += htab->glink_pltresolve; | |
86b9da88 AM |
8764 | endp = htab->glink->contents; |
8765 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
8766 | while (p < endp - 8 * 4) | |
8767 | { | |
8768 | bfd_put_32 (output_bfd, B + endp - p, p); | |
8769 | p += 4; | |
8770 | } | |
8771 | while (p < endp) | |
8772 | { | |
8773 | bfd_put_32 (output_bfd, NOP, p); | |
8774 | p += 4; | |
8775 | } | |
8776 | ||
7e8aeb9a | 8777 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
8778 | + htab->glink->output_section->vma |
8779 | + htab->glink->output_offset); | |
8780 | ||
8781 | /* Last comes the PLTresolve stub. */ | |
a877a2b6 | 8782 | if (info->shared) |
7e8aeb9a | 8783 | { |
a6aa5195 | 8784 | bfd_vma bcl; |
d7128ce4 | 8785 | |
a6aa5195 | 8786 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 8787 | { |
a6aa5195 | 8788 | bfd_put_32 (output_bfd, pic_plt_resolve[i], p); |
7e8aeb9a AM |
8789 | p += 4; |
8790 | } | |
a6aa5195 AM |
8791 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
8792 | ||
8793 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
8794 | + htab->glink->output_section->vma | |
8795 | + htab->glink->output_offset); | |
8796 | ||
8797 | bfd_put_32 (output_bfd, | |
8798 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
8799 | bfd_put_32 (output_bfd, | |
8800 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
8801 | bfd_put_32 (output_bfd, | |
8802 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
8803 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
8804 | { | |
8805 | bfd_put_32 (output_bfd, | |
8806 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
8807 | bfd_put_32 (output_bfd, | |
8808 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
8809 | } | |
8810 | else | |
8811 | { | |
8812 | bfd_put_32 (output_bfd, | |
8813 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
8814 | bfd_put_32 (output_bfd, | |
8815 | LWZ_12_12 + 4, p + 9*4); | |
8816 | } | |
7e8aeb9a AM |
8817 | } |
8818 | else | |
d7128ce4 | 8819 | { |
a6aa5195 | 8820 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a AM |
8821 | { |
8822 | bfd_put_32 (output_bfd, plt_resolve[i], p); | |
8823 | p += 4; | |
8824 | } | |
a6aa5195 AM |
8825 | p -= 4 * ARRAY_SIZE (plt_resolve); |
8826 | ||
8827 | bfd_put_32 (output_bfd, | |
8828 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
8829 | bfd_put_32 (output_bfd, | |
8830 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
8831 | bfd_put_32 (output_bfd, | |
8832 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
8833 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
8834 | { | |
8835 | bfd_put_32 (output_bfd, | |
8836 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
8837 | bfd_put_32 (output_bfd, | |
8838 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
8839 | } | |
8840 | else | |
8841 | { | |
8842 | bfd_put_32 (output_bfd, | |
8843 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
8844 | bfd_put_32 (output_bfd, | |
8845 | LWZ_12_12 + 4, p + 6*4); | |
8846 | } | |
d7128ce4 | 8847 | } |
d7128ce4 AM |
8848 | } |
8849 | ||
e87d4038 | 8850 | return ret; |
25dbc73a | 8851 | } |
e1a9cb8e | 8852 | \f |
252b5132 RH |
8853 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
8854 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
8855 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
8856 | #define TARGET_BIG_NAME "elf32-powerpc" | |
8857 | #define ELF_ARCH bfd_arch_powerpc | |
8858 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
8859 | #ifdef __QNXTARGET__ |
8860 | #define ELF_MAXPAGESIZE 0x1000 | |
8861 | #else | |
252b5132 | 8862 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 8863 | #endif |
b1342370 | 8864 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 8865 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 RH |
8866 | #define elf_info_to_howto ppc_elf_info_to_howto |
8867 | ||
8868 | #ifdef EM_CYGNUS_POWERPC | |
8869 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
8870 | #endif | |
8871 | ||
8872 | #ifdef EM_PPC_OLD | |
8873 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
8874 | #endif | |
8875 | ||
8876 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 8877 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 8878 | #define elf_backend_can_refcount 1 |
b491616a | 8879 | #define elf_backend_rela_normal 1 |
252b5132 | 8880 | |
43c40ab2 | 8881 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 8882 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 8883 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 8884 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
157090f7 | 8885 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 8886 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 8887 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 8888 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 8889 | |
feee612b | 8890 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
8891 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
8892 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
8893 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
8894 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
8895 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
8896 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 8897 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
8898 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
8899 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
8900 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 8901 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
8902 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
8903 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
8904 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
8905 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
8906 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
8907 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 8908 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 8909 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
8910 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
8911 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
8912 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 8913 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 8914 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 8915 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 8916 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
e054468f | 8917 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
252b5132 RH |
8918 | |
8919 | #include "elf32-target.h" | |
9d8504b1 PB |
8920 | |
8921 | /* VxWorks Target */ | |
8922 | ||
8923 | #undef TARGET_LITTLE_SYM | |
8924 | #undef TARGET_LITTLE_NAME | |
8925 | ||
8926 | #undef TARGET_BIG_SYM | |
8927 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec | |
8928 | #undef TARGET_BIG_NAME | |
8929 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
8930 | ||
d5e3d971 PB |
8931 | /* VxWorks uses the elf default section flags for .plt. */ |
8932 | static const struct bfd_elf_special_section * | |
8933 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 8934 | { |
d5e3d971 PB |
8935 | if (sec->name == NULL) |
8936 | return NULL; | |
8937 | ||
8938 | if (strcmp (sec->name, ".plt") == 0) | |
8939 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
8940 | ||
8941 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
8942 | } | |
9d8504b1 PB |
8943 | |
8944 | /* Like ppc_elf_link_hash_table_create, but overrides | |
8945 | appropriately for VxWorks. */ | |
8946 | static struct bfd_link_hash_table * | |
8947 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
8948 | { | |
8949 | struct bfd_link_hash_table *ret; | |
8950 | ||
8951 | ret = ppc_elf_link_hash_table_create (abfd); | |
8952 | if (ret) | |
8953 | { | |
8954 | struct ppc_elf_link_hash_table *htab | |
8955 | = (struct ppc_elf_link_hash_table *)ret; | |
8956 | htab->is_vxworks = 1; | |
4a3dc543 | 8957 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
8958 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
8959 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
8960 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
8961 | } | |
8962 | return ret; | |
8963 | } | |
8964 | ||
8965 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
8966 | static bfd_boolean | |
8967 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
8968 | struct bfd_link_info *info, | |
8969 | Elf_Internal_Sym *sym, | |
8970 | const char **namep ATTRIBUTE_UNUSED, | |
8971 | flagword *flagsp ATTRIBUTE_UNUSED, | |
8972 | asection **secp, | |
8973 | bfd_vma *valp) | |
8974 | { | |
8975 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
8976 | valp)) | |
8977 | return FALSE; | |
8978 | ||
8979 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
8980 | } | |
8981 | ||
9d8504b1 PB |
8982 | static void |
8983 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
8984 | { | |
8985 | ppc_elf_final_write_processing(abfd, linker); | |
8986 | elf_vxworks_final_write_processing(abfd, linker); | |
8987 | } | |
8988 | ||
8989 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
8990 | define it. */ | |
8991 | #undef elf_backend_want_plt_sym | |
8992 | #define elf_backend_want_plt_sym 1 | |
8993 | #undef elf_backend_want_got_plt | |
8994 | #define elf_backend_want_got_plt 1 | |
8995 | #undef elf_backend_got_symbol_offset | |
8996 | #define elf_backend_got_symbol_offset 0 | |
8997 | #undef elf_backend_plt_not_loaded | |
8998 | #define elf_backend_plt_not_loaded 0 | |
8999 | #undef elf_backend_plt_readonly | |
9000 | #define elf_backend_plt_readonly 1 | |
9001 | #undef elf_backend_got_header_size | |
9002 | #define elf_backend_got_header_size 12 | |
9003 | ||
468392fb AM |
9004 | #undef bfd_elf32_get_synthetic_symtab |
9005 | ||
9d8504b1 PB |
9006 | #undef bfd_elf32_bfd_link_hash_table_create |
9007 | #define bfd_elf32_bfd_link_hash_table_create \ | |
9008 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
9009 | #undef elf_backend_add_symbol_hook |
9010 | #define elf_backend_add_symbol_hook \ | |
9011 | ppc_elf_vxworks_add_symbol_hook | |
9012 | #undef elf_backend_link_output_symbol_hook | |
9013 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 9014 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
9015 | #undef elf_backend_final_write_processing |
9016 | #define elf_backend_final_write_processing \ | |
9017 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
9018 | #undef elf_backend_get_sec_type_attr |
9019 | #define elf_backend_get_sec_type_attr \ | |
9020 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
9021 | #undef elf_backend_emit_relocs |
9022 | #define elf_backend_emit_relocs \ | |
9023 | elf_vxworks_emit_relocs | |
9024 | ||
9025 | #undef elf32_bed | |
9026 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 9027 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
9028 | |
9029 | #include "elf32-target.h" |